DIVISION 1

Section

1A IB 1C ID IE IF 1G 1H II 1J IK 1L 1M IN 10 IP 1Q 1R IS IT 1U

DIVISION 2

Section

2A 2B 2C 2D 2E 2F 2G 2H 21 2J 2K 2L 2M 2N '

( &2, C? -06C<i(J

Wo HAZARDOUS WASTE CLEANUP EPA SUFERFUND SITE

I CELTOR CHEMICAL WORKS HOOPA, CALIFORNIA

. TABLE OF CONTENTS

GENERAL REQUIREMENTS i

Title

SFUND RECORDS CENTER 88113223

Special Clauses Warranty of Construction Environmental Protection Summary of Work Measurement and Payment Pre-Construction and Pre-Work Conference Progress Meetings and Reports Project Schedule Project Photographs Safety , Health and Emergency Response Requirements Chemical Data Quality Management Temporary Utilities and Controls Spill Control Dust Control Security Field Offices and Sheds Project Record Documents Definitions Not Used Air Monitoring Submittals

SITE WORK

Title

Site Preparation Survey Data Contaminated Soil Removal Contaminated Liquids Collection and Disposal Sampling and Analysis Off-Site Transportation Off-Site Disposal Backfill and Final Grading Revegetation Chain Link Security Fence Site Maintenance Demobilization Concrete Sampling, Demolition and Removal of Concrete Structures

1 SFUND RECORDS CTR 1 1835-00040_

SECTION 1A SPECIAL CLAUSES

• *' I ' ; • i "f i 1 •

INDEX

1. Commencement, Prosecution and Completion of Work 2. Liquidated Damages 3. Approval of Contractor Personnel 4. Physical Data 5. Local Labor Preference 6. Availability of Utility Services 7. Utility Service Interruptions 8. Contract Drawings and Specifications 9. Layout of Work , 10. Quantity Surveys 11. Variations in Estimated Quantities — 12. Time Extensions 13. Insurance Required ' 14. Identification of Employees 15. Contractor Quality Control (CQC) 16. Performance of Work by Contractor 17. Equipment Ownership and Operating Expense Schedule (1985 June OCE) 18. As-Built Drawings __ 19. Reviews and Submittals 20. Project Signs 21. Public Notification

1. COMMENCEMENT. PROSECUTION, AND COMPLETION OF WORK

After contract award, the Contractor will be issued a Notice to Proceed (NTP) after receipt of the Contractor's bonding and insurance. This Notice to Proceed will authorize the Contractor to provide required submittals in accordance with Section 1U and other parts of these specifications. The Contractor will not be! allowed to work onsite until his submittals have been reviewed and approved by the Contracting Officer's Representative (COR). After approval of all Contractor submittals, the Contractor will be authorized to commence work on the site under the terms of this contract.

It is desirable to complete the project during one construction season. Should this not be possible, the project will have to be shut down for the winter rainy season, and started up the following spring. Completion would then take place in the second construction seasons.

Should a second construction season be required, the elapsed days stated below would have to be adjusted by the COR to include time Required for shut down operations, the closure period and start up operations;

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\

Project Milestones

1. Submit project procedures

2. Finalize project procedures and plans and incorporate comments

3. Begin site work

4. Complete all site work 160 days after NTP $ 1,600.00 activities including initial revegetation, demobilization and exit

The time indicated for completion shall include final cleanup of the premises. Field work shall be performed only during the time period May-September, unless otherwise approved by the COR.

2. LIQUIDATED DAMAGES

In case of failure on the part of the Contractor to complete the work within the time fixed in the contract or any extensions thereof, the Contractor shall pay to the Government, as liquidated damages, the sum of $ 1,600.00 for each calendar day of delay. The warranty period on the revegetation is excluded from this Liquidated Damages clause.

3. APPROVAL OF CONTRACTOR PERSONNEL

The individuals selected by the Contractor to serve as his on-site Project Superintendent and Quality Control Supervisory Engineer, shall have had a minimum of five (5) and two (2) years experience respectively in these positions directly related to the handling and removal of hazardous materials and substances. The experience requirements for the Health and Safety personnel are listed in Section 1J. These individuals shall also be subject to Government approval. Resumes and references shall be submitted to the Contracting Officer for approval with the bid.

4. PHYSICAL DATA

The information and data furnished or referred to are for general information only, and the Government shall not be held responsible for any interpretation or conclusions drawn therefrom by the Contractor. The Contractor is encouraged to visit the site to satisfy himself of all general and local conditions.

Completion Date

21 days after NTP , l

42 days after NTP

43 days after NTP

Liquidated Damages per Calendar Day of Delay

0

0

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4.1 Source of Data. The physical conditions indicated on the drawings and in the specifications are the result of limited site investigations, surveys, geotechnical investigations and soil contamination sampling and analyses performed during the feasibility study of the site, remedial investigation and conceptual (10%) design.

4.2 Weather. Weather conditions shall be investigated by the Contractor to satisfy himself as to the hazards likely to arise therefrom. Weather records and reports may ,be obtained from the local U.S. Weather Bureau and the U.S. Forest Service.

4.3 Access Routes. Transportation facilities shall be investigated by the Contractor to satisfy himself as to the existence of sufficient road access and any load restrictions which may impact upon the bid performance.

5. LOCAL LABOR PREFERENCE ' ;

5.1 The Contractor and his subcontractor shall take notice of and shall comply to the maximum extent possible, with Tribal Employment Right Ordinance enacted by Hoopa Valley Business Council, which requires maximum utilization of local Tribal labor and business services, except:

5.1.1 To the extent that qualified persons are not available.

5.1.2 For the reasonable needs of the Contractor or his subcontractor to employ supervisory or specially experienced individuals necessary to assure execution of the contract.

5.1.3 For the obligation of the Contractor or his subcontractor to offer employment to present or former employees as the result of a lawful collective bargaining contract.

5.2 The Contractor and his subcontractor shall furnish the Hoopa Valley Business Council and the United States Employment Service Office in the area in which the project is located a list of all positions for which they may, from time to time, require laborers, mechanics, and other employees.

6. AVAILABILITY OF UTILITY SERVICES

The Contractor shall arrange with the local utility companies for electricity and telephone service required by him during the site work and shall pay all costs in connection therewith. Additional Contractor requirements are specified in Section 1L, Temporary Utilities and Controls." The Contractor shall, at his own expense, make all temporary connections and install distribution lines. All temporary lines shall be maintained by the Contractor in a workmanlike manner satisfactory to the Contracting Officer, and shall be removed by the Contractor in like manner prior to final acceptance of the construction.

Water service to the site, and sanitary waste removal from the site must be arranged for by the Contractor.

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7. UTILITY SERVICE INTERRUPTIONS

The Contractor shall submit a written notice to the COR not less than five (5) days in advance of each interruption of each utility (and communication) service to or within existing buildings and facilities being used by others. No single outage shall exceed four (4)hours unless approved in writing by COR. The time and duration of all outages shall be coordinated with the COR.

8. CONTRACT DRAWINGS AND SPECIFICATIONS

8.1 Sets Furnished. Ten (10) sets of contract specifications (except applicable publications incorporated into the Technical Provisions by reference) with drawings attached shall be furnished to the Contractor without charge. Additional sets will be furnished on request at the cost of

/' reproduction. The work shall conform to these specifications and to the contract drawings, set out in the drawings index, all of which form a part of these specifications. The work shall also conform to the standard details bound or referenced herein.

8.2 Notification of Discrepancies. The Contractor shall check all drawings and specifications furnished to him and shall promptly notify the COR.of any discrepancies. Dimensions marked on drawings shall be followed in lieu of scale measurements. Enlarged plans and details shall govern where the same work is shown at smaller scales. The Contractor shall compare all drawings and verify the figures before laying out the work, and shall be responsible for any errors which might have been avoided thereby.

9. LAYOUT OF WORK

The Contractor shall layout his work from the established control points, baseline and benchmark, shown in Drawings, and shall make all required measurements in connection therewith. The Contractor shall furnish all stakes, templates, platforms, equipment, tools, and materials and labor as may be required in laying out any part of the work from the established baseline and benchmark. The Contractor shall execute the work to the lines and grades established or indicated, and shall maintain and preserve all stakes and other control points established by the COR until authorized to remove them. If such marks are destroyed by the Contractor, or through his negligence, prior to their authorized removal, they may be replaced by the COR at his discretion, and the expense of replacement shall be deducted from any amount due or to become due the Contractor.

10. QUANTITY SURVEYS :

10.1 The Contractor shall make surveys to establish grid points, subgrade elevations following removal of contaminated soil to the depths shown on the Drawings and final grade elevations at the intersections of the grid system shown on Sheets 3, 4, 5 and 6 to the nearest 0.05 foot. If the surveys indicate that overexcavation has extended more than 0.05 feet beyond that required by analyses of soil samples, unless authorized by the COR, the

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quantity of soil excavated and disposed of under Bid Item 3 shall be reduced in proportion to the amount of overexcavation above that specified. Intermediate survey points within the grid system may be added by the COR following excavation. Additional Contractor requirements are specified in Section 2B, "Survey Data" and IE "Measurement and Payment". The Government shall make such computations as are necessary to verify the quantities of work performed or finally in place. Unless waived by the Contracting Officer in each specific case, quantity surveys made by the Contractor shall be made in the presence of a representative of the Contracting Officer. The Contractor's survey plan, describing his approach to implementing Section 2B, shall be submitted to the COR and be approved before excavation begins.

10.2 All original field notes, computations, and other records of the Contractor for the purpose of layout, progress and final surveys shall be recorded in duplicating field books, the original pages of which shall be furnished promptly in ring binders to the COR at the site of the work and shall be used by the Contracting Officer to the extent necessary in determining the proper amounts of progress and final payments.

11. VARIATIONS IN ESTIMATED QUANTITIES

11.1 This clause is applicable only to Item #3 of the Bidding Schedule. All Contractor's indirect cost for Item #3 shall be included in his bid price for Bid Item #2. Lower quantities of actual work under Item #3 or elimination of this work completely from the contract will not be the basis for an adjustment in the contract unit price or for any adjustment in compensation. Where the actual quantity of work for Item #3 exceeds 110% of the total estimated quantity for that item, an equitable adjustment in contract price shall be made upon demand of the Contractor.

Contractor shall be paid at the contract unit price for Item #3 for the number of cubic yards of soil excavated transported and disposed of as approved of by the COR.

11.2 This clause is applicable only to Item # 5 and Item #9 - subsoil

only.

a) All Contractor's indirect costs for each item will be included in the bid price for the first subitem listed under the respective item. Variation from the estimated quantity in the actual work performed under any second subitem or elimination of all work under such a second subitem will not be the basis for an adjustment in contract unit price.

(b) Where the actual quantity of work performed for Item No. 5 or 9 is less than 90 percent of the quantity of the first subitem listed under-such item, the Contractor will be paid at the contractor unit price for that subitem for the actual quantity of work performed and, in addition, an equitable adjustment in contract price shall be made upon demand of Contractor. The equitable adjustment in price for the underrun shall be made on the basis that the Contractor has assumed the risk and is entitl to no adjustment for the first 10 percent underrun.

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,c> If the quantity of work

105 percent of the total estimated q in the time required for «- will adiusted

as follows:

<i* Tf the auantity variation is such that it will cause an increase in the time necessary for completion, the ( ntractir Officer sa upOe

• +• o T i+tpn reauest for an extension within 10 days irom une beginning of such delay or within such further period of time which the Contracting Officer grants but prior to date of final settlement ofth COTtreust ascertain the facte and make such adjustment to the completion date as, in his judgment, the findings justify.

(d) If the parties fail to agree upon the adjustment to be made, the dispute shall be determined as provided in Clause, Disputes, of e

Contract Clauses.

12. TTME EXTENSIONS

Notwithstanding any other provisions of this contract.thetrme extensions for changes in the work will depend upon the extent, if any, by which the changes causes delay in the completion of the various elements o

construction. Any ch ge order granting *„*?£££

elements delayed and that the remaining contract completion datesfor all oST rSons of the work will not be altered and may further provide for an equitable readjustment of liquidated damages pursuant to the

completion schedule.

13. INSURANCE REQUIRED

13.1 The Contractor shall procure, pay for, and maintain during the entire period of his performance under this contract the following min

insurance: ,

Amount Type i : — Workmen's Compensation and Employer $100,000

Liability Insurance

General Liability Insurance $1,000,000 per occurrence, but a limit of $2,000,000 total

Automobile Liability Insurance $100,000 per person and

Bodily Injury $500,000 per occurrence

Property Damage $50,000 per occurrence

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13.2 With his bid, the Contractor shall furnish to the Contracting Officer a certificate or written statement of the above-required insurance. The policies evidencing required insurance shall contain an endorsement to the effect that cancellation or any material change in the policies adversely affecting the interests of the Government in such instances will not be effective for such period as may be prescribed by the laws of the State of California is to be performed and in no event less than thirty (JU) calendar days after written notice thereof to the Contracting Officer.

13.3 The Contractor shall insert the substance of this clauses in all

subcontracts hereunder.

14. IDENTIFICATION OF EMPLOYEES

The Contractor shall furnish to each employee and require each employee engaged on the work to display his identification as may be approved and directed by the Contracting Officer. All prescribed identification shall immediately be delivered to the Contracting Officer for cancellation upon

release of any employees.

15. CONTRACTOR QUALITY CONTROL (OQC)

The Contractor shall provide and maintain both an effective Quality Control and Chemical Quality Control program for construction.

15.1 General. Except for isolated tests of other items-of work specified to be performed by the Government, the quality of all work shal bethe responsibility of the Contractor. Sufficient inspections and tests of all items of work, including that of subcontractors, to ensure conformance to applicable specifications and drawings with respect to the quality of materials, workmanship, construction, finish, functional performance, and identification shall be performed on a continuing basis. The Contractor shall furnish qualified personnel, appropriate facilities, instruments, and testing devices necessary for the performance of the quality control function. The controls shall be adequate to cover all construction operations, shall be keyed to the proposed construction sequence, and shall be implemented, by the Contractor's quality control

personnel.

15.2 Pre-Construction Planning. Within 21 calendar days after the date of receipt by him of Notice of Award, and prior to starting on-site construction, the Contractor shall meet with the Contracting Officer and discuss the quality control requirements. During this meeting the Contractor shall submit for approval his proposed written QC plan which shall include all features outlined below. The proposed plan will be reviewed and the meeting shall develop mutual understanding relative to details of the system, including the personnel, facilities, forms, etc., to be used for the inspections, tests and the administration of the system. No change in the approved plan shall be,implemented without written concurrence by the Contracting Officer.

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15.3 Contractor's Proposed QC Plan. The Contractor's proposed written Contractor Quality Control Plan shall include as a minimum:

15.3.1 The quality control organization.

15.3.2 Names, number, and qualification of personnel to be used

for this purpose.

15.3.3 Authority and responsibilities of all quality control

personnel.

15.3.4 Schedule of use of inspection personnel by types and phase

of work.

15.3.5 Proposed test methods, including names of technicians or qualified testing laboratory to be used, and model, type, and number of any field instrumentation or analytical equipment to be used.

15.3.6 Method of performing, documenting and enforcing quality control operations of both prime and subcontract work including inspection

and testing.

15.3.7 A copy of a letter of direction to the Contractor's representative responsible for quality control, outlining his duties and responsibilities, and signed by a responsible officer of the firm.

15.4 Control of On-Site Construction. The Contractor's quality control program shall include inspection and tests. (See also Section IK.)

15.4.1 Preparatory Inspections shall be performed prior to beginning each feature any construction work. Preparatory inspections for the applicable feature of work shall include: review of submittal requirements and all other contract requirements with the foremen or supervisors directly responsible for the performance of the work; check to assure that provisions have been made to provide required field work control testing; examine the work area to ascertain that all preliminary work has been completed; verify all field dimensions and advise the Contracting Officer of any discrepancies and perform a physical examination of materials and equipment to assure that they conform to approved shop drawings or submittal data and that all materials and/or equipment are on hand.

15.4.2 Initial Inspection shall be performed as soon as work begins on a representative portion of the particular feature of work, and shall include examination of the quality of workmanship as well as a review of control testing for compliance with contract requirements.

15.4.3 Follow-up Inspections shall be performed continuously as any particular feature of work progresses to ensure compliance with contract requirements, including control testing, until completion of that feature of work.

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15.5 Qi.nl "itv Control Staff. In addition to the Contractor's job-supervisory staff, a separate quality control group shall be provided. This group shall report to the Contractor's management at a level no lower than a Vice-President of the company. As a minimum, the overall strength of the quality control group for this contract shall be as follows:

15.5.1 The Qua!it.v Control Supervisory Engineer shall be an approved, qualified hazardous material removal engineer whose sole responsibility is to j ensure compliance with the contract drawings and specifications. This person shall demonstrate his ability to perform correctly the duties required of him/her to the satisfaction of the Contracting Officer and shall be physically at the project site whenever work is in progress and shall be in charge of the Contractor s Quality Control Program for this project. All the Contractor's submittals for approval shall be reviewed and modified and approved correct by him prior o forwarding of such submittals to the Contracting Officer. The Quality Control Supervisory Engineer or designated representative must have an adequate background with a bachelors' degree in civil or chemical engineering and a minimum of two (2) years experience in removal of hazardous wastes to supervise the chemical quality control and prepare the

QC reports.

15.6 Testing Laboratory and Equipment. The Contractor shall provide a laboratory certified by the State of California with testing apparatus and qualified laboratory technicians to perform sampling and testing as specified in Section IK. All measuring and testing devices, laboratory equipment, instruments, and supplies, and transportation of these items and the samples necessary to accomplish the required shall be provided. All measuring and testing devices will be calibrated esteblished intervals against certified standards. The testing laboratory organization shall be experienced in the type of testing work to <ione. representative of the testing laboratory shall be at the work site as necessary for sampling, inspecting and testing required to control the necessary tor sanqp rig, certain measuring and testing devices

to beginning work on the si • submitted to the Government for qualifications and references n Qf Notice to Proceed, review, verification, and approva pr ° ri_°ection prior to authorization to

ZTZing the period of cleanup at the site.

15.7 MO* Nine copies all spection st

All sports signed by the <*iality Control Supervisory

Engineer.

15.7.1 nailv Submittals. The

Daily Report" form oi VSst uorh

irfolLi thl etverby e S t. Original and 3 copies of this

report shall be submitted. ! :

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1^79. Results of Tests. Original and three copies of complete

Officer.

15.7.3 Contractor Quality Control (CQC) Project Summary. At the

end of the construction effort 1shall Contracting Officer, a summary of CQC during the project.. in be a consolidation summary of the CQC Daily Reports.

15.8 Enforcement. The Contractor shall stop work on any item or feature, pending satisfactory correction of any deficiency noted by his quality control staff or by the COR. Construction shall not proceed upon any feature of work containing uncorrected work. Notations on qua y control reports shall not be acceptable as substitution for other written reports by the Contractor required under General Provisions "Changes," "Differing Site Conditions," or Termination for Default

Damages for Delay - Time Extensions.

15.9 Payment. At the election of the Contracting Officer, no PM™** estimate shall be processed under this contract until the entire Quality Control Plan has been approved or until all QC reports are properly execu

and furnished.

16. PERFORMANCE OF WORK BY CONTRACTOR

The Contractor shall perform on the site, and with Jjis ?wn organization, work equivalent to at least forty (40%) percent of the total amount of work to be performed under the contract. If e g h of the work hereunder, the Contractor requests a reduction percentage, and the Contracting Officer determines that it would be to th Shipment's advantage, the percentage of the work by the Contractor may be reduced, provided written approval of such reduction is obtained by the Contractor from the Contracting Offic .

17. EQUIPMENT OWNERSHIP AND OPERATING EXPENSE SCHEDULE (1985 JUNE OCE)

17.1 Whenever actual ownership and operating costs, for each piece of equipment or equipment groups of similar serial and series cannot be determined by the Contracting Officer from a Contractor s accounting records, allowable costs for construction equipment in sound workable condition owned or controlled and furnished by the Contractor or subcontractor at any tier for work requiring adjustments in contract price shall be determined in accordance with the applicable provisions of the "Construction Equipment Ownership and Operating Schedule," Region VII. For forward pricing, the schedule in effect at the time of negotiations shall apply. For the purpose of determination of the hourly rates to be applied under this contract, work conditions shall be considered to be the average unless otherwise determined by the Contracting Officer. Rates for equipment not in the schedule shall be computed by the Government using the formulas

1A-10

in the schedule. Where applicable, rates in the schedule may be used for unlisted equipment of comparable horsepower and auxiliary features.

17.2 Equipment rental costs are allowable, subject to the provisions of DAR 15-205.34 and 15-402.2, substantiated by certified reproduced copies of invoices or bills. Rates for equipment rented from an organization under common control, lease-purchase, or sale-leaseback arrangements shall be determined in accordance with the schedule. A copy of the schedule shall be provided to the successful bidder upon request.

18. AS-BUILT DRAWINGS

18.1 A survey shall be conducted to permanently locate construction activities which have occurred at the site.

18.2 Information obtained in Item 18.1 above shall be drawn on a USCE standard size mylar and shall be included in the project documents to represent a permanent record.

18.3 The marked-up drawings shall be used in the final preparation of as-built drawings in accordance with Section 2B "Survey Data" and furnished to the Contracting Officer not later than ten (10) days after the work is completed. '

19. REVIEWS AND SUBMITTALS —

Except as otherwise specified the Contractor shall submit 12 copies of all documents for review within the time frame established in these specifications. The Contracting Officer requires a minimum period of 21 days, after receipt, to accomplish the review and provide comments or approval. If a submittal is returned for correction or is not satisfactory and is disapproved by the Contracting Officer, the Contractor shall resubmit the corrected material in the same quantity, as specified for the original submittal, for approval within 7 calendar days after receipt by him of the disapproved material. Each time a Contractor resubmittal is required, the' 21 days minimum review period is in force. The Contracting Officer is not responsible for time loss by the Contractor from the issuance of the Notice to Proceed to the commencement of work on the site, due to the Contractor's failure to submit approvable project documents within the established time frame.

19.1 Contractor-Certified Submittals. Six (6) sets of all Contractor-certified shop drawings, materials lists, catalog cuts, and equipment lists shall be submitted by the Contractor to the Contracting Officer not less than four (4) weeks prior to Contractor's procurement of fabricated and/or manufactured items. Such submittals shall be accepted for information purposes only. All samples of materials submittal as required by these specifications shall be properly identified and labeled for ready identification, and upon being certified, stored at the site of the work for job site use until all work has been completed and accepted by the Contracting Officer. Each copy of the submittals reviewed and approved by

1A-11

the Contractor and not designated to be reviewed and approved by the Government shall be identified as having received such review and certification, being so stamped, signed, and dated by the Contractor. Certification by the Contractor shall be accomplished using ENG Form 4025 in a manner similar to that used for approval by the Government except action Code A or B only will be used by the Contractor for his certifications and column g (Action Code) , may be used by the Contractor as well as the Corps of Engineers. ENG Form 4025 will be furnished by the Government upon request by the Contractor. Contractor-certified drawings will be subject to quality assurance review by the Government at any time during the duration of the contract. No adjustment for time or money will be allowed for corrections required as a result of noncompliance with plans and specifications. The stamp for certification action by the Contractor will be similar to the following: (DF NABCO-E 6 February 1976).

CONTRACTOR ' (Firm Name)

A - Certified to comply with contract drawings and specifications.

B - Certified to comply with contract drawings and specifications as noted

on shop drawings and/or attached sheet(s). (Resubmission not required

provided installation conforms as noted).

Signature: Title: Date: _

19.2 Certificates of Compliance. Any certificates required for demonstrating proof of compliance of materials with sp>ecifications requirements shall be executed in four (4) copies. Each certificate shall be signed by an official authorized to certify on behalf of the manufacturing company and shall contain the name and address of the Contractor, the project name and location, and the quantity and date or dates of shipment and delivery to which the certificates apply. Copies of laboratory test reports submitted with certificate shall contain the name and address of the testing laboratory and the date or dates of the tests to which the reports apply. Certification shall not be construed as relieving the Contractor from furnishing satisfactory material if, after tests are performed on selected samples, the material is found not to meet the specific requirements (ECI-7-670.3).

The Contractor shall complete and forward daily to the Contracting Officer the following report:

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CONSTRUCTION QUALITY CONTROL DAILY REPORT

(Contractor) 1

REPORT NO. CONTRACT NO. DATE LOCATION OF WORK: . WEATHER , RAINFALL INCHES, TEMP: MIN_ MAX WIND DIRECTION

1. WORK PERFORMED TODAY BY PRIME CONTRACTOR (INCLUDE PLANT AND LABOR BREAKDOWN):

2. WORK PERFORMED TODAY BY SUBCONTRACTORS (INCLUDE PLANT AND LABOR BREAKDOWN): ; '

3. LIST SPECIFIC INSPECTION PERFORMED AND RESULTS OF THESE INSPECTIONS. (INCLUDE CORRECTIVE ACTIONS):

4. LIST TYPE AND LOCATION OF TESTS PERFORMED AND RESULTS OF THESE TESTS (ATTACH SEPARATE SHEETS FOR EACH SEPARATE CATEGORY OF TESTS): ;

5. VERBAL INSTRUCTIONS RECEIVED FROM GOVERNMENT CONSTRUCTION DEFICIENCIES OR RETESTING REQUIRED:

PERSONNEL ON

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6. REMARKS.

7. CERTIFICATION: I certify! that the above report is complete and correct and that I, or my authorized representative, have inspected all work performed this day by the prime contractor and each subcontractor and have determined that all materials, equipment, and workmanship are in strict compliance with the plans and specifications except as may be noted above.

Contractor's Designated Quality Control Representative

The daily report should reflect the Corps of Engineers Three Phase Inspection System.

20. PROJECT SIGNS

On commencement of work on this project, the Contractor shall furnish and erect the temporary sign in the location selected by the Contracting Officer near the project site entrance. The Contractor shall maintain the sign in good condition through the project construction period and on completion of the project shall remove the sign from the premises. The project sign shall conform to standard drawing OD15-9A12 and 0D15—9A24 bound herein pages as 1A-15 and 1A—16. A decal of the "Engineer Castle and EPA and CDHS logos will be furnished to the Contractor upon request. Other signs to be prepared, erected and maintained are described in Section 1J.

21. PUBLIC NOTIFICATION

All public notification, press releases, radio, TV announcements, or interviews concerning this project will be the sole responsibility of the EPA Region IX public information officer. No release of information will be made by the Contractor without prior coordination with and approval of Contracting Officer/EPA Region IX and California Division of Health Services. All queries received by the Contractor will be referred to Contracting Officer for response. The Contractor will not be required to address members of the press or any other organization as a result of his being awarded this work. EPA Region IX and/or California Division of Health Services may utilize the Contractor to provide technical input for release of items to the general public.

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STANDARD

ALPHABET & NUMERALS

• OFFICE OF THE DISTRICT ENGINEER 1A-16

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SECTION IB

WARRANTY OF CONSTRUCTION

1. In addition to any other warranties set out elsewhere in this contract, the Contractor warrants that the work performed under this contract conforms to the contract requirements and is free of any defect of equipment, materials or design furnished, or workmanship performed by the Contractor or any of his subcontractors or suppliers at any tier. Such warranty shall continue for a period of one year from the date of final acceptance, of the work but with respect to any part of the work which the Government takes possession of prior to final acceptance, such warranty will continue for a period of one year from the date the Government takes possession. Under this warranty, the Contractor shall remedy, at his own expanse any such failure to conform to contract requirements or any such defect. In addition, the Contractor shall remedy, at his own expense, any damage to the Government-owned or controlled real or p>ersonal property when that damage is the result of the Contractor's failure to conform to contract requirements or any such defect of equipment, materials, workmanship, or design. The Contractor shall also restore any work damaged in fulfilling the terms of this clause. The Contractor's warranty with respect to work repaired or replaced hereunder shall run for one year from the date of such repair or replacement. k

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2. The Government shall notify the Contractor in writing within a reasonable time after the discovery of any failure, defect, or damage.

i 3. Should the Contractor fail to remedy any failure, defect, or damage described in 1 above within reasonable time after receipt of notice thereof, the Government shall have the right to replace, rep>air, or otherwise remedy such failure, defect, or damage at the Contractor's expense.

4. In addition to other rights and remedies provided by this clause, all subcontractor's, manufacturer's and supplier's warranties expressed or implied, respecting any work and materials shall, at the direction of the Government, be enforced by the Contractor for the benefit of the Government. In such case, if the Contractor's warranty under 1 above has expired, any suit directed by the Government to enforce a subcontractor's, manufacturer's or supplier's warranty shall be at the expense of the Government. The Contractor shall obtain any warranties which the subcontractors, manufacturers, or suppliers would give in normal commercial practice.

5. If directed by the Contracting Officer, the Contractor shall require any such warranties to be executed in writing to the Government.

6. Notwithstanding any other provision of this clause, unless such defect is caused by the negligence of the Contractor or his subcontractors or supplier at any tier, the Contractor shall not be liable for the repair of any damage which results from any such defect in Government furnished material or design.

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7. The warranty specified herein shall not limit the Government's rights under the Inspection of Work clause of this contract with respect to latent defects, gross mistake, or fraud.

8. Defects in design or manufacture of equipment, specified by the Government on a "brand name and mode" basis, shall not be included in this warranty. The Contractor shall require any subcontractors, manufacturers, or suppliers thereof to execute their warranties in writing directly to the Government.

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SECTION 1C

ENVIRONMENTAL PROTECTION

INDEX

1 . General 6. Disposal of Debris 2. Notification 7. Burning 3. Implementation 8. Dust Control 4. Protection of Land Resources 9. Maintenance of Pollution 5. Protection of Water Resources Control Facilities During

Construction 10. Payment

1. GENERAL

For the purpose of this specification, environmental protection is defined as the retention of the environment in its natural state to the greatest possible extent during project construction and to enhance the natural appearance in its final condition. Environmental protection requires consideration of air, water and land, and, within reasonable limits to, control noise as well as other pollutants. In order to minimize any environmental pollution arising from the construction activities, the Contractor and his subcontractors shall comply with all applicable control and abatement regulations.

2. NOTIFICATION

The Contracting Officer will notify the Contractor in writing of any noncompliance with the aforementioned Federal, State, or local laws or regulations. Such notice, when delivered to the. Contractor or his authorized representative at the site of the work, shall be deemed sufficient for the purpose. The Contractor shall, after receipt of such notice, immediately inform the Contracting Officer of proposed corrective action and take such action as may be approved. If the Contractor fails or refuses to comply promptly, the Contracting Officer may issue an order stopping all or part of the work until satisfactory corrective action has been taken. No part of the time lost due to any such stop orders shall be made the subject of a claim for extension of time or for. excess costs or damages by the Contractor. !

3. IMPLEMENTATION

Prior to commencement of the work, the Contractor shall:

3.1 Submit in writing his proposals for implementing the requirements for environmental protection specified herein. •:

3.2 Meet with representatives of the Contracting Officer to develop

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mutual understanding relative to compliance with this provision and adminstration of the environmental protection program.

Approval of the Contractor's plan for environmental protection shall not relieve the Contractor of his responsibility for adequate and con­tinuing control of pollutants.

4. PROTECTION OF LAND RESOURCES

4.1 General. The land resources within the project boundaries and outside the limits of permanent work performed under this contract shall be preserved in their present condition or be restored to a condition after completion of construction that will appear to be natural and not detract from the appearance of the project. The Contractor shall confine his construction activities to areas defined by the drawings or specifications. The following additional requirements are intended to supplement the requirements of General Provisions paragraphs entitled "Protection of Existing Vegetation, Structures, Utilities, and Improvements," "Operations and Storage Areas," and "Cleaning Up."

4.2 Prevention of Landscape Defacement. Except in areas indicated on the drawings or specified to be cleared, the Contractor shall not deface, injure, or destroy shrubs or cactus, nor remove or cut them without the authorization of the Contracting Officer. Where the possibility exists that vegetation may be defaced, bruised, indured or otherwise damaged by the Contractor's equipment or operations, the Contractor shall adequately protect such vegetation. Stone, earth or other material that is displaced into uncleared areas shall be removed. Monuments and markers shall be protected before construction operations commence. A preconstruction survey including photographs shall be conducted by the Contractor and a report of the survey furnished when required by the Contracting Officer. Photography requirements are defined in Section II.

4.3 Restoration of Landscape Damage. Any vegetation or other landscape feature scarred or damaged by the Contractor's equipment or operations shall be restored to a condition satisfactory to the Contracting Officer. Restoration of scarred and damaged vegetation shall be performed in an approved manner by experienced workmen. Vegetation damaged beyond restoration shall be removed and disposed of as directed. Vegetation that is to be removed because of damage shall be replaced at the Contractor's expense by nursery-grown vegetation of the same species or a species approved by the Contracting Officer. The size and quality of nursery-grown vegetation shall also be approved by the Contracting Officer.

4.4 Location of Office, Sites, Storage, and Testing Facilities. Contractor's offices, storage, and other construction buildings located on Hoopa Valley Indian Tribe property which are required in the performance of the work, shall be located upon cleared portions of the Support Zone, and shall require written approval of the Contracting Officer. The preservation of the landscape shall be an imperative consideration in the selection of all sites and in the construction of buildings.

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4-5 Temporary Excavation and Embankments. If the Contractor proposes to construct temporary roads or embankments and excavations for plant and/or work areas, he shall submit the following for approval at least fifteen (15) calendar days prior to scheduled start of such temporary work.

4.5.1 A layout of all temporary roads, staging/storage areas, work areas, excavations, and embankments to be constructed within the work area.

4.5.2 A landscaping drawing showing the proposed restoration of the area. The drawing shall provide for the obliteration of construction scars as such and shall provide for a reasonably natural appearing final condition of the area. No unauthorized road construction, excavation, or embankment construction (including borrow and disposal areas) shall be permitted.

4-6 Post-Construction Clean-up or Obliteration. The Contractor will obliterate all signs of temporary construction facilities such as haul roads, work areas, structures, foundations of temporary structures, stockpiles of excess or waste materials, or any other vestiges of construction activities ad directed by the Contracting Officer. No separate or direct payment will be made for post-construction cleanup or obliteration.

5. PROTECTION OF WATER RESOURCES

5.1 General. The Contractor shall not pollute surface or ground waters with waste materials or other harmful materials. The Contractor shall investigate and comply with all applicable Federal, state, county, tribe and municipal laws concerning pollution of surface waters.

5-2 Erosion Control. Prior to any major construction, the Contractor shall submit a drawing for approval of the Contracting Officer showing his scheme for controlling erosion and disposing of eroded material.

5.3 Spillages. Special measures shall be taken to prevent waste materials from leaving the designated construction area.

5.4 Disposal. Disposal of any materials, wastes, effluents, trash, garbage, oil, grease, or chemicals in adjacent areas shall not be permitted. If any waste material is dumped in unauthorized areas, the Contractor shall immediately remove the material and restore the area to the original undisturbed condition. If necessary, contaminated soil shall be excavated, disposed of as directed by the Contracting Officer, and replaced with suitable fill material, compacted and finished with topsoil and planted as required to reestablish vegetation, all at the expense of the Contractor.

6. DISPOSAL OF DEBRIS

All disposal sites for debris shall be approved by the Contracting Officer and any other regulatory authority required.

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7. BURNING

No on-site burning shall be permitted.

8. DUST CONTROL

The Contractor shall be required to maintain all excavations, embankments, stockpiles, haul roads, permanent and temporary access roads, plant sites, waste staging/storage areas, stabilization materials handling areas, borrow areas, and all other work areas within or outside the project boundaries free from dust which would cause a hazard or nuisance to others. Approved temporary methods of stabilization consisting of sprinkling, chemical treatment or similar methods, shall be permitted to control dust. Sprinkling, to be approved, must be repeated at such intervals as to keep all parts of the disturbed area at least damp at all times. The Contractor must have sufficient appropriate equipment on the job to accomplish this if sprinkling is used. Dust control shall be performed as the work proceeds and whenever a dust nuisance or hazard occurs. No separate or direct payment shall be made for dust control, and the cost thereof shall be considered a subsidiary obligation of the Contractor to be included in the contract price. Additional dust control measures shall be taken when the Industrial Hygienist considers dust control is needed for safety reasons or when the concentration exceeds lmg/m3 total particulates. Additional dust control requirements are defined in Section IN, "Dust Control."

9. MAINTENANCE OF POLLUTION CONTROL FACILITIES DURING CONSTRUCTION.

During the life of this contract, the Contractor shall maintain all facilities constructed for pollution control under this contract as long as the operations creating the particular pollutant are being carried out or until the material concerned has become stabilized to the extent that pollution is not longer being created. During the construction period, the Contractor shall conduct frequent training periods on environment protection. The curricula should include: methods of detecting and avoid pollution; familiarity with pollution standards, both statutory and contractual; and installation and care of vegetative covers, plants, and other facilities to prevent and correct environmental pollution. The Contractor shall keep a record of such training periods, documenting data and attendance.

10. PAYMENT. 1

No separate measurement or pmyment shall be made for work referred to in this section, and all costs of operations therefore shall be considered a subsidiary obligation of the Contractor to be included in Payment Item No. 1 .

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SECTION ID

SUMMARY OF WORK

INDEX

1. Site Location 2. Background 3. Description of Remedial Action 4. Work to be Done 5. Special Project Procedures 6. Plan of Operation 7. Contractor's Use of Site

1. SITE LOCATION. The Celtor Chemical Works Site is located in Humboldt County, California, in the northern end of the Hoopa Valley. The site is

shown on Sheet 1.

2. BACKGROUND

The project site is on reservation land of the Hoopa Valley Indian Tribe, about 2 miles north of the town of Hoopa. Approximately 2.5 acres of lan are included in the site. It is situated near the base of a westward facing hillside, with a relatively flat 7.5. acre pasture area to the west. The Trinity River is located about 800 feet west and 1,000 feet north of t central part of the site. The main portions of the site are the plantsite, the pasture below the plantsite, and a shallow gully that runs northward from the plantsite to the Trinity River. The site is accessed by travelling Highway 96 north from Hoopa and then taking a gravel road about one-quarter mile into the site as shown on Sheet 1.

The Celtor Chemical Works Plant was established in 1957 to process ore from the nearby Cooper Bluff mine. Ore brought to the plant was processed for copper, zinc and precious metals. Ore was hauled into the plant and unloaded at the upper (eastern) : side. It then moved through several processes down to the lower side.

Tailings were stored in piles situated at the lower south corner of the plantsite. Wastewater containing some tailings was reportedly sluiced down

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the gully northward to a settling pond on the gravel bar adjacent to the Trinity River.

Hie site was abandoned in 1962 for unknown reasons. During that same period, the California Department of Fish and Game issued citations to the operators for pollution and fish-kills.

The plantsite area contains a number of reinforced concrete retaining walls and slab floors left from a former ore processing facility. Surrounding these are bare to partially vegetated areas that consist of native soil contaminated by ore and tailings. Unimproved dirt roads are within the site, and the gravel access road mentioned above passes through the lower (western) part of the plantsite area. The road is presently used for fishing access to the Trinity River. The pasture, which is located below and west of the gravel road and the site, is grass-covered and used for grazing. The gully, which is located in the northern part of the site, is heavily wooded and contains thick brush in places.

The nearest residence to the site is located approximately 500 feet to the southeast. Subdivision's with several dozen residences are located approximately one-quarter mile south of the site. Electric power lines owned and maintained by Pacific Gas & Electric Co. run along the fishing access road to supply power to the nearby residences. Telephone lines are also available from the same poles.

Soil sampling and laboratory analyses were performed in 1981 and 1982 by the California Department of Health Services and by EPA in 1982. In December, 1983, EPA removed approximately 1,400 cubic yards of contaminated tailings and other material from the site. This was all of the visibly contaminated material present at the site.

In 1984, other areas of the site contaminated by heavy metals (arsenic, cadmium, copper, lead and zinc) were identified through random site sampling and analyses. Many of the soil samples were found to have pH values in the range 2 to 4. Complete data are available in the Remedial Investigation report prepared for EPA.

3. DESCRIPTION OF REMEDIAL ACTION

3.1 General. For the purpose of facilitating the removal of the contaminated soils, the site has been divided into six areas, identified as A through F on Sheets 3, 4, 5 and 6. The remedial action required in each area is described in the following sections.

3.2 Area A Soil will be excavated by the contractor to a depth of 1 foot in Area A and stock-piled in Areas D, E and/or F in a manner approved by the COR. Subsequently soil at the base of the excavation will be sampled at the grid locations shown on Sheets 3 and 6 and tested in accordance with the provisions of Section 2E of these specifications. If the laboratory analyses indicate contamination levels in excess of permissible, additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specification are met. The additional material

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excavated will also be stockpiled in Areas D, E and/or F in a manner approved by the COR. Area A will then be developed as part of the Contamination Reduction Zone as described in Section 2A of these specifications. Following removal of all contaminated material and demolished concrete structures from all Areas of the site, the decontamination slab and other project construction facilities will be removed from Area A. Five surface soil samples will be collected at locations selected by the COR and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specifications are met. Area A will then be backfilled and revegetated as shown on Sheets 8 and 11 and according to Section 2H and 21 of these specifications.

3.3 Area B Soil will be excavated to a depth of 2 feet in Area B and disposed of at an off-site hazardous waste disposal facility approved by the COR. Soil at the base of the excavation will be sampled at the grid locations shown on Sheet 3 and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation and disposal at an off-site hazardous waste disposal facility, will be required until acceptable contaminant levels as described in Section 2C of these specification are met'. Following removal of all contaminated material from all Areas of the site, Area B will be backfilled and revegetated as shown on Sheet 8 and according to Sections 2H and 21 of these specifications.

3.4 Area C Soil will be excavated to a depth of 2 feet in Area C and disposed of at an off-site hazardous waste disposal facility approved by the COR. Soil at the base of the excavation will be sampled at the grid locations shown on Sheets 3, 4 and 5 and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specification are met. All additional excavated material will also be disposed of at an off-site hazardous waste disposal facility approved by the 00R. Following removal of all contaminated material from all Areas of the site, Area C will be backfilled and revegetated as shown on Sheets 8, 9 and 10 and according to Sections 2H and 21 of these specifications.

3.5 Area D Soil stockpiled from Area A will be disposed of at an off-site hazardous waste disposal facility approved by the COR. In addition, soil will be excavated to a depth of 2.5 feet in Area D and disposed of at an off-site hazardous waste disposal facility approved by the COR. Soil at the base of the excavation will be sampled at the grid locations shown on Sheet 3 of the plans and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specification are met. All additional excavated material will also be disposed of at an off-site hazardous waste disposal facility approved by the COR. Following removal of all contaminated material from all Areas of the site, Area D will be backfilled and revegetated as shown on Sheet 8 and according to Sections 2H and 21 of these specifications.

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3.6 Area E Soil stockpiled from Area A will be disposed of at an off-site hazardous waste disposal facility approved by the COR. Concrete core samples will be taken in accordance with the provisions of Section 2E of these specifications. If the concrete is within acceptable contaminant levels, it will be disposed of at a Class III disposal site approved by the COR. If the concrete exceeds acceptable contaminant levels as described in Section 2N, it will be disposed of at an off-site hazardous waste disposal facility approved by the COR.

In addition, soil will be excavated to a depth of 1 foot in Area E and disposed of at an off-site hazardous waste disposal facility approved by the COR. Soil at the base of the excavation will be sampled at the grid locations shown on Sheet 3 and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specifications are met. All additional excavated material will also be disposed of at an off-site hazardous waste disposal facility approved by the COR. Following removal of all contaminated material from all Areas of the site, Area E will be backfilled and revegetated as shown on Sheet 8 and according to Section 2H and 21 of these specifications.

3.7 Area F Soil stockpiled from Area A will be disposed of at an off-site hazardous waste disposal facility approved by the COR. In addition, soil will be excavated to a depth of 1 foot in Area F and disposed of at an off-site hazardous waste disposal facility approved by the COR. Soil at the base of the excavation will be sampled at the grid locations shown on Sheet 3 and tested in accordance with the provisions of Section 2E of these specifications. Additional excavation will be required until acceptable contaminant levels as described in Section 2C of these specification are met. All additional excavated material will also be disposed of at an off-site hazardous waste disposal facility approved by the COR. Following removal of all contaminated material from all Areas of the site, Area F will be backfilled and revegetated as shown on Sheet 8 and according to Sections 2H and 21 of the specifications.

4. WORK TO BE DONE 1

4.1 Site Development. This includes designation of the site into the Support Zone, Contamination Reduction Zone and Exclusion Zone and establishing their boundaries; construction of approved fencing and health and safety protection measures; setup of site service trailers; relocation of existing fishing access road; establishing decontamination areas for equipment and personnel; relocation of power and/or telephone poles; the construction of a staging area for equipment storage, and truck weighing; background air quality monitoring and providing secure access and approach ways to the waste site.

4.2 Waste Excavation and Testing. This px>rtion of the project includes the excavation of contaminated soil and testing of the remaining soil for contamination which may exceed the established criteria. Note that all excavated material from Area A must be stockpiled in Areas D, E and/or F prior to loading for disposal.

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4.3 Concrete Testing and Demolition. This includes sampling and testing for concrete contamination, and demolition of all concrete structures. •

4.4 Loading, Manifesting, Transporting and Disposing of Contaminated Material. This material includes the contaminated excavated material, contaminated concrete and other contaminated site materials. Work includes preparing manifests describing the contaminants, volumes and other pertinent information as required by the State of California and EPA, covering and decontaminating loaded trucks transporting the waste to an approved hazardous waste disposal site and disposed at that site. An off-site hazardous waste disposal facility is one which is currently approved by EPA and which complies with the EPA Off-Site Disposal Policy, May 6, 1985. It is the Contractor's responsibility to conduct these operations adhering to the rules and regulations of all authorities having jurisdiction over this operation.

4.5 Loading and Disposal of Uncontaminated Concrete. This includes loading of tested, uncontaminated concrete from the concrete structures in Area E and disposal of that material in an approved Class III landfill. Trucks carrying this material must be decontaminated prior to leaving the site.

4.6 Backfilling and Grading. This item includes backfilling the excavation with tested and approved imported material and compacting it in accordance with the specifications. The material will be placed to the final grades shown. Tested and approved topsoil will be placed over the compacted backfill to the depths and grades shown. Tested and approved gravel will be placed in Area C as shown. The fishing access road through the site area will be reconstructed to pre project conditions as approved by the COR. The relocated fishing access road will be removed.

4.7 Safety, Health and Emergency Response Plan. The Contractor shall be responsible for preparing, implementing and enforcing a Safety, Health and Emergency Response Plan (SHERP). This plan will establish, in detail, the protocols and procedures to be followed for the continued protection of personnel on-site and nearby off-site receptors (i.e. humans, cattle, wildlife) against operational and chemical hazards associated with the remedial activities at the Celtor Chemical Works site.

4.8 Site Maintenance and Security. . The Contractor and his subcontractors shall be responsible for site maintenance and security. The Contractor will be required to provide security personnel on-site 24 hours a day from the first day material or equipment are stored on-site until demobilization is complete and approved by the COR.

4.9 Contractor Quality Control Plan. The Contractor and his subcontractors shall be responsible for preparation of a Contractor Quality Control Plan (CQCP).

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4.10 Water Treatment. The Contractor shall collect ponded water and all wastewater from personnel, equipment and vehicle decontamination, and treat it to levels specified. If treatment does not produce water of the required quality, the water must be transported to and disposed of at an off-site disposal site approved by the COR.

4*11 Demobilization and Project Closeout. This item includes the decontamination of the Contractor's equipment, removal of all temporary construction facilities and Contractor equipment from the site, transfer of all documents to the Contracting Officer and completion of any work deemed necessary for execution before closeout, as ' instructed by the Contracting Officer. i

5. SPECIAL PROJECT PROCEDURES

Should the Contractor .be unable to complete'the work prior to the onset of fall rains, the project will have to be shut down, and restarted the following spring. If a shut down is required, the Contractor shall develop a plant for shut down which must be submitted to the COR for review and approval. The shut down plan must shown:

o methods to be used to protect the public and the environment from site hazards

o methods to be used to protect the areas already excavated to acceptable levels, whether or not they have been backfilled, from contamination from runoff or sediment from contaminated areas

o grading plans to control stormwater runoff and erosion from the site

o plan for removal of equipment and offices

o plan for site security during the period the job is shut down

o site grading to eliminate all standing water on the site

o site grading to assure that runoff from still contaminated areas does not cross already cleaned areas

o the temporary winter storm drainage system

o uses of impermeable membranes to protect already cleaned areas

o uses of mulch to reduce and control erosion

o support of any unbraced slopes higher than 5 feet and steeper than 3H: IV.

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If site work is not to begin by June 22, 1987, the demolition and disposal of the concrete structures on-site shall not be started in the 1987 construction season without the written approval of the COR.

On or before March 15 of the following year, the Contractor will meet with the COR at the site to assess its current condition. Within 15 days of that meeting, the Contractor shall develop a plan for restarting and completing the project which must be submitted to the COR for review and approval prior to the commencement of any work at the site. <;

6. PLAN OF OPERATION

The Contractor shall develop a workable Materials Handling Plan for the Celtor Chemical Works Superfund Site Clean-up. Prior to any field operation, this plan shall be forwarded to the Contracting Officer for his approval. This phase of the project shall be done so that operations shall not interfere with each other, shall avoid cross-contamination and shall meet the time completion schedule.

7. CONTRACTOR'S USE OF SITE ' !

The Contractor shall have complete and exclusive use of the Celtor Chemical Works Superfund Site for the execution of the work as shown on the drawings and in the specifications. : However, the site will be inspected by representatives of the USEPA, the Corps of Engineers, CDHS and their designated representatives. ; |

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SECTION IE MEASUREMENT AND PAYMENT

INDEX

1. The Lump Sum 2. Contaminated Soil Excavation, Transportation, Disposal and Related Work 3. Concrete Removal 4. Laboratory Testing 5. Backfill Transportation, Placement and Compaction 6. Scale for Weighing Trucks and Weighhouse

1. THE LUMP SIM

1*1 The Lump Sum. Item 1 on the Bidding Schedule represents work that is not unit priced. The lump sum bid item includes, but is not limited to: performance and payment bonds; site preparation; site management controls; collection, storage (including refrigeration) and transportation of all site samples including Contractor QC and Government QA samples; construction of chain link security fence and gates; equipment decontamination; mobilization; demobilization; preparation, implementation, and updating of all special procedures; dust control; medical surveillance program including all required physical examinations; project records and documents; project as-built drawings; construction scheduling; site maintenance and cleanup; water treatment and disposal; shop drawings and certifications; onsite or offsite scales; laundering; weather station; all recordkeeping; site surveying; security guards and facilities; site stabilization; development of permanent fishing access road; development and removal of temporary fishing access road; control inspections and all management, supervisory and other items. Progress payments shall be based on the percentage of work completed.

I*2 Site Preparation. Site preparation shall include all materials, equipment, labor and permits for providing, installing, and maintaining erosion and drainage controls; for all required surveying; for clearing and grubbing outside the Exclusion Zone; for removal of soil from Area A to stockpiles in other areas; for gravel, rubble and miscellaneous debris staging; for upgrading, establishing and maintaining all site access roads including temporary relocation of the fishing access road for establishing site security; for maintaining area delineation fences and gates; for construction of the vehicle and equipment decontamination pad; for the collection and handling system for vehicle and equipment decontamination liquids including construction of the water treatment plant; for construction of materials and equipment staging and storage areas; for all temporary utilities; for providing, installing, and maintaining all field offices, sheds and personnel decontamination facilities.

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2. CONTAMINATED SOIL EXCAVATION. TRANSPORTATION AND DISPOSAL.

This work comprises Bid Items 2 and 3, and shall include safety equipment and clothing, air monitoring cost (excluding cost of laboratory analyses), all materials, equipment, labor and permits required for clearing, excavation, transportation, handling and off-site disposal of contaminated soil, roots, trees, bushes etc. (excluding concrete) at an approved hazardous waste disposal site.

2.1 Measurement for Item 2 of the Bidding Schedule.

This item is a lump sum bid item and Contractor is responsible for establishing, for his bid, the quantity of soil to be removed to the depth shown based on the Drawings, site visit(s) and other information. All Contractors' indirect costs for Item 3 shall also be included in the bid price for Item 2. Progress payments based on the percentage of work completed and computed by surveys for volume, shall be made up to 70% of the lump sum. The final 30% will be paid after verifying by Contractor survey that soil is excavated to the depth as shown on Drawings and after all manifests from the disposal site are returned and accepted by COR.

2.2 Measurement for Item 3 of the Bidding Schedule.

The unit price for this item shall not include indirect cost. Item 3 of the Bidding Schedule includes all soil excavation, transportation and disposal required after the analysis of soil samples at the base of the excavation cited on the Drawings. Payment shall be made based on the number of cubic yard of soil actually excavated from the Exclusion Zone multiplied by the bid unit price. 30% from each payment < shall be retained and paid to the Contractor after verifying by Contractor survey the final quantities of removed soil and after all manifests from the disposal site are returned and accepted by COR. To determine quantities for Item 3, the Contractor shall survey the grids for elevation and area. Survey shall be done after removal of soil to the depths shown on drawings (after completion of Item 2)and again after completion of excavation when the site is determinated to be clean by soil sampling and testing.; Using survey data, Contractor shall calculate the cubic yards of soil excavated below the depth shown on drawings.

3. CONCRETE DEMOLITION AND REMOVAL

The unit price for Bid Item 4 is based on tons (2,000 lb) and includes demolition, removal, transportation and disposal of reinforced concrete. There shall not be any adjustment in the contract unit price for smaller quantities than in the bidding schedule for either or both items. Contractor shall be paid based on the actual quantities disposed of at each disposal site multiplied by contract unit price for such disposal. In the bidding schedule, Contractor shall include unit prices for both alternatives:

1) transporting and disposing of the concrete at an approved hazardous waste disposal facility

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2) transporting and disposing of the concrete at Class III landfill

4. LABORATORY TESTING.

Contractor is required to develop unit prices per sample for the testing of site soil (Bid Items 5a and 5b), concrete (Bid Item 6) and groundwater (Bid Item 7). A sample shall be considered to be the material taken at a given place in the soil, concrete or groundwater that is subjected to the complete set of laboratory analyses required by these specifications. (Note: Sample collection is covered in bid Item 1)

Contractor is required to develop the cost associated with the required laboratory testing of backfill material and topsoil for the entire project and show that as a lump sum amount (Bid Item 8).

Contractor is required to develop the cost associated with the required laboratory testing of all required air samples for the entire project and show that as a lump sum amount (Bid Item 10).

5. BACKFILL TRANSPORTATION. PLACEMENT AND COMPACTION.

The unit of measure for Bid Item 9a, 9b and 9c is the cubic yard. Payment will constitute full compensation for all labor, equipment, tools, supplies, and expenses necessary to complete the work. The number of cubic yards of backfill material - both subsoil and topsoil - shall be measured in the original position and computed by the average end-area method. For subsoil, the measurement will not include the yardage of overburden material removed from above the backfill subsoil. Cost of restoration of pasture shall be included in this bid item. Removal of the temporary fishing access road is included in bid item 1.

6. SCALE FOR WEIGHING TRUCKS AND WEIGHHOUSE

6.1 Scale for Weighing Trucks shall be equipped with a weight-recording device. Scale shall be of sufficient size and capacity to accommodate all trucks used in hauling contaminated soil and concrete. Scale shall be tested as directed; weights for testing scales shall be on hand at all times. ;

6.2 Weighhouse shall be waterproof and constructed to afford protection for recording devices of the scale. Weighhouse shall have one sliding window facing the scale platform, one end window, and a shelf desk at least two feet wide by six feet long.

6.3 All trucks leaving site will be weighted. Copies of the Scale Sheets shall be furnished to the COR daily.

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SECTION IF

PRE-CONSTRUCTION AND PRE-WORK CONFERENCE

INDEX

1. Pre-Construction Conference ! 2. Pre-Work Conference

1. PRE-CONSTRUCTION CONFERENCE

Prior to or within 21 calendar days after Contractor has been issued, the Notice to Proceed, the Contractor shall meet with the Contracting Officer or his representative for a Pre-Construction Conference. The purpose of this conference is to review submittal requirements, safety, payrolls, labor relations, environmental protection, progress schedules, and payment and procurement of materials. The principal features of work shall also be reviewed and any questions regarding the contract and work site will be addressed. During or prior to this meeting, the Contractor shall submit his proposed Quality Control Plan, including Chemical Quality Control Plan and his Safety, Health and Emergency Response Plan. The Contractor Quality Control Program and proposed QC Plan shall be briefly reviewed to provide the Contracting Officer with a general understanding of the QC system. The Chemical Quality Control Plan must be approved by the Contracting Officer after contract award, but prior to working in the Exclusion Zone. A more detailed discussion and review of the QC system is covered during the Pre-Work Conference.

2. FRE-WORK CONFERENCE

At least 21 days prior to starting on-site construction, a Pre-Work Conference shall be held between the Contractor and Contracting Officer or his representative. Attendance by the Contractor's superintendent, quality control personnel, safety personnel, and any major subcontractor's job superintendents shall be required. The purpose of this conference is to further redefine the Quality Control System, to thoroughly review the QC Plan, and to develop a mutual understanding of the specific requirements established by the contract. The specifics of the Contractor's Safety, Health and Emergency Response Plan shall also be discussed so that the emergency procedures and safety requirements are understood by all of those directly related to the site work. The Contractor's schedule, particularly for the start-up period, shall be discussed. Questions concerning the administrative requirements outline during the Pre-Construction Conference or any other aspect of the project may also be addressed.

If the project continues into a second construction season, a Pre-Work Conference as described above shall be held at least 14 days prior to starting on-site construction in the second season.

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SECTION 1G

PROGRESS MEETINGS AND REPORTS

INDEX

1. Progress Meetings 3, Progress Reports 2. Progress Charts

1. PROGRESS MKKTTNna

The Contractor shall schedule and administer progress meetings at a minimum of once per week and such additional meetings as required by the Contracting Officer.

1.1 General Meeting Requirements. The Contractor shall follow these general requirements for the progress meetings:

1.1.1 Prepare agenda for meetings. 1.1.2 Make physical arrangements for meetings. 1.1.3 Preside at meetings. 1.1.4 Record the minutes; include significant proceedings and

decisions. 1.1.5 Reproduce and distribute copies of minutes within three

(3) days after each meeting to participants in the meeting and to parties affected by decisions made at the meeting. Furnish three (3) copies of the minutes to the COR. . ' ,

1.2 Attendance 1.2.1 Contracting Officer or Contracting Officer's

representative. 1.2.2 Contractor's Superintendent. 1.2.3 Contractor's Quality Control Supervisory Engineer. 1.2.4 Contractor's Industrial Hygienist or Industrial Hygiene

Technician. 1.2.5 Subcontractors as appropriate to the agenda. 1.2.6 Suppliers as appropriate to the agenda. 1.2.7 Others.

1.3 Suggested Agenda 1.3.1 Review and approval of minutes of previous meeting. 1.3.2 Review of work progress since previous meeting. 1.3.3 Field observations, problems, conflicts. 1.3.4 Problems which impede construction schedule. 1.3.5 Review of off-site delivery schedules. 1.3.6 Corrective measures and procedures to regain projected

schedule. 1.3.7 Revisions to construction schedule. 1.3.8 Progress during succeeding work period. 1.3.9 Coordination of schedules. 1.3.10 Review submittal schedules; expedite as required. 1.3.11 Maintenance of quality and safety standards. 1.3.12 Pending changes and substitutions.

lGr-1

Review proposed changes for effect on construction schedule, on completion date and on other contracts of the projects. Other business.

2. PROGRESS CHARTS The Contractor shall submit progress charts to indicate the scheduled

completion dates of the principal features of the work. See Section 1 H-Project Schedule for requirements.

3. PROGRESS REPORTS The Contractor shall submit the following reports at the weekly

meeting:

o Test Reports (Section 1A). o Revised Weekly Progress Schedule (Section 1H). o Weekly Report (Section 1J). o Reports of Significant QC or Analytical Problems (Section IK) .

' . • v ' • • !

1.3.13

1.3.14

1G-2

SECTION 1H

PROJECT SCHEDULE

INDEX

1. Form of Schedule 3. Progress Revisions 2. Construction Progress Schedule 4. Submittals

1. FORM OF SCHEDULE

1.1 Prepare schedule in the form of a bar chart. 1.1.1 Provide separate horizontal bar for each work activity

or operation. 1.1.2 Horizontal time scale: Identify the first work day of

each week. 1.1.3 Scale and spacing: To allow space for notations and

future revisions.

2. CONSTRUCTION PROGRESS SCHEDULE

2.1 Show the complete sequence of work by activity. 2.2 Show the dates for the beginning and completion of each major

element of work. This list shall include, but is not limited to: 2.2.1 Project Start-up 2.2.2 Security 2.2.3 Site Surveys 2.2.4 Air Monitoring Sampling 2.2.5 Laboratory Services 2.2.6 Site Preparation ! 2.2.7 Site Utilities and Temporary Facilities 2.2.8 Staging/Storage Areas 2.2.9 Decontamination Areas 2.2.10 Location and Chemical Analysis of Borrow Material 2.2.11 Final Grading 2.2.12 Revegetation 2.2.13 Project Close-out and Closures of Decontamination,

Staging and Storage Area 2.2.14 Site Policing 2.2.15 Fence Removal

3. PROGRESS REVISIONS

3.1 Indicate progress of each activity to date of submission. 3.2 Show changes occurring since previous submission of schedule:

3.2.1 Major changes in scope 3.2.2 Activities modified since previous submission 3.2.3 Revised projections of progress and completion 3.2.4 Other identifiable changes

3.3 Provide a narrative report as needed to define: 3.3.1 Problem areas, anticipated delays, and the impact on the

schedule.

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Corrective action recommended, and its effect. The effect of changes on schedules or subcontractors.

4. SUBMISSIONS

4.1 Submit initial schedules within fifteen (15) days after Notice to Proceed is made.

4.2 Submit revised schedules within seven (7) days after receipt of notice of review comments from the COR. 4.2.1 The Contracting Officer shall review schedules and

return a review copy within twenty-one (21) days after receipt.

4.2.2 If required, the Contractor shall resubmit within seven (7) days after return of review copy.

4.2.3 Submit revised progress schedules for each regular weekly progress meeting.

4.2.4 Submit six (6) copies.

3.3.2 3.3.3

1H-2

SECTION II

PROJECT PHOTOGRAPHS

INDEX

1. Photographs Required 3. Prints 2. Delivery of Prints 4. Views Required

1. PHOTOGRAPHS REQUIRED

1*1 Before Work Begins. The Contractor shall use a wide angle lens to take four (4) views of the general site showing the location of each facility, entrance/exit road, etc., and use a standard lens to take four (4) views of the contaminated site. These photographs shall be 8 in. x 10 in. color prints.

1.2 Progress Photographs. After construction operations have been started at the site, the Contractor shall photographically record the cleanup of the waste site.

1.2.1 The progress photographs can be 3 in. x 5 in. color prints and shall include coverage of:

1.2.1.1 Relocated fishing access road _

1.2.1.2 Soil excavation, handling and sampling.

1.2.1.3 Concrete sampling and demolition.

1.2.1.4 Concrete removal

1.2.1.5 Unanticipated events such as spillage of soil in uncontaminated zones or related accidents.

1.2.1.6 Truck loading and decontamination.

1.2.1.7 i Borrow pit area.

1.2.1.8 Personnel decontamination.

! •

1.2.1.9 Site and task-specific : employee respiratory and personnel protection.

1.2.1.10 Fill placement, compaction, density tests, and grading.

1.2.1.11 Site features at start of preparation for winter

shutdown (if required).;

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1 . 2 . 1 . 1 2 Site features as required).

left for winter shutdown (if

Site features at end ' of winter season (if required). .

Site features at completion of project restart activities (if required). ;

Seeding and cover establishment.

Disposal of contaminated material at the disposal facility.

Unusual site conditions such as safety, health, security, or contract violations.

1.2.2 At two weeks interval or as directed by CO? take at least four (4) views of the contaminated site as previously required in paragraph 1.1 above .

1.3 Post Construction Photographs. After completion of work the Contractor shall take four (4) views of the completed site using a wide angle lens (minimum 4 photographs, 8 in. x 10 in.).

1.3.1 The actual number and location of views to be taken shall be as directed by the Contracting Officer; however, it is anticipated that a maximum of 250 project photographs shall be required.

2. DELIVERY OF PRINTS The Contractor shall submit to the Contracting Officer three (3) color

prints of each photograph along with the negatives within ten (10) calendar days after taking the photographs or as approved by OCR. All photographs are U.S. Government property and shall not be released by the Contractor to the public or news media. The photographs shall be mounted and enclosed back-to-back in a double-face plastic sleeve punched to fit standard three-ring binders.

3. PRINTS

3.1 Prints shall be color prints, of standard commercial quality, sized as previously described, on single weight glossy paper. Each print shall have an information box, 1-1/2 in. x 3-1/2 in. in the lower right hand corner. The information box for the 3 in. x 5 in. photographs shall be scaled down accordingly, or taped to the bottom of the photo. The box shall be typewritten and arranged as follows: • j

Project No. ; Contract No. Contractor: 1 . Photograph No. ' ' j Date ' | Description Direction of View

1.2.1.13

1.2.1.14

1.2.1.15

1.2.1.16

1.2.1.17

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4. VIEWS REQUIRED

4.1 Prints shall illustrate condition and location of work and the state of progress.

4.2 Consult with Contracting Officer representative at each period of photography for directions concerning views required.

, 11-3

SECTION 1J

SAFETY, HEALTH AND EMERGENCY RESPONSE REQUIREMENTS

INDEX

1. General 2. Site Conditions and Activities 3. Medical Surveillance 4. Industrial Hygiene Support 5. Respiratory Protection Program 6. Employee Training 7. Work Zones 8. Personnel Protection Requirements and Methods 9. Personnel and Equipment Decontamination 10. Support Facilities 11. Emergency Provisions and Portable Support Facilities 12. Emergency Response Plan 13. Monitoring Requirements 14. Logs and Reports 15. Identification and Control 16. Signs 17. Natural Hazards 18. Submittals

Attachments: #1 Pre-Employment Medical Evaluation #2 Certification of Medical Examination Return to Work After Illness or Injury #3 Post-Emploment Medical Evaluation

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1. GENERAL

1.i Background. This section describes the minimum safety, health, and emergency response requirements for the remedial activities at the Celtor Chemical Works Superfund Site. The remedial action is intended to remove soil and tailings materials on the site that are contaminated to levels above the site-specific action levels:

SITE-SPECIFIC ACTION LEVELS

Trinity River Soil Surface Water and at site

Total Soluble Groundwater Onsite Discharge Point

Metal (mg/kg) (mg/1) (ug/1) (ug/1)

Arsenic 100 5 50 50

Cadmium 25 1 10 2.8

Copper 2,500 25 1,000 13.5

Lead 500 5 50 50

Zinc 5,000 250 5,000 47

Mercury 20 0.2 Selenium 100 1 Cyanide 200 2

Note: Analysis for Total Concentration shall be by EPA SW-846 and Analysis for Soluble Concentration shall be in accordance with the State of California, California Administrative Code, Title 22, Division 4.

Vegetation and concrete structures are also to be removed.

The excavation and offsite disposal remedy selected for this site involves demolition and offsite disposal of the concrete structures, and excavation, hauling and disposal of all soil contaminated above the site-specific action levels at an approved hazardous waste disposal site. The demolished concrete structures will be disposed of at an approved hazardous wast® disposal site if hazardous, and at an approved Class III landfill if not hazardous. The excavation will be backfilled with imported clean soil, and drainage features will be installed. Sheets 3, 4,5 and 6 show the approximate area of removal.

1.2 Safety, Health and Emergency Response Plan (SHERP) The Contractor shall develop a detailed Safety, Health and Emergency Response Plan (SHERP), which shall address health and safety measures to be followed to provide adequate protection against potential exposure to hazardous chemicals identified at the site. The Contractor shall establish and maintain a complete Hazardous Environment Protection Program (as part of the SHERP) for all personnel working or visiting at the site. The program shall include support for up to two (2) full-time Government Inspectors and up to six (6) intermittent Government visitors at any one time as may be required to monitor the Contractor's progress and supervision of the work. The Contractor shall not be required to provide medical support for Government employees, but shall provide first aid as needed,

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all protective clothing, respirators, and equipment and use of change-house and

showers.

The Safety, Health and Emergency Response Plan shall address the following elements as a minimum, and must be submitted to and approved by the Contracting Officer prior to commencement of work in any contaminated areas.

1. Regulatory Requirements - Federal, State and local.

2. Staff Organization, Qualifications and Responsibilities - Chain-of-command including the individuals responsible for the development, implementation, oversight and enforcement of site-specific safety and health requirements delineated in the SHERP for all phases of work. Professional Industrial Hygiene support to be provided by the Contractor for the project shall be delineated. The names, qualifications and work experience of all safety and health personnel to be used by the Contractor ; throughout the performance of this contract shall be submitted for approval with the SHERP.

3. Accident Prevention - An Accident Prevention Plan and description of work phase safety plans shall be' presented as discussed in paragraph 01.A.03, 01.A.04, 01.A.05, and 01.A.06 and Appendix Y of COE EM 385-1-1. Each phase safety plan shall include a description of the work activity, and positive precautionary measures to be taken to safeguard against, and to reduce or eliminate, each particular hazard.

4. Site description - Site Access Controls and Work Zones - As referenced in EPA Standard Operating Safety Guides, November 1984.

5. Personnel Protective Equipment Protective clothing, head and foot protection, eye/face protection, respirator requirements for each work phase and work zone. A written Respiratory Protection Program is required.

6. Personnel and Equipment Decontamination - Procedures and facilities.

7. Health and Safety Work Precautions - Buddy system, controlled access, eating and drinking precautions, and smoking and ignition sources.

8. Medical Surveillance - Pre- and post-physical examinations, lost work day injuries.

9. Training and Education of Workers - Initial training prior to commencement of work to be conducted in basic construction safety emphasizing site-specific hazards; acute and chronic effects of chemicals expected on site; personal protective equipment requirements including proper use, limitations and fitting; and emergency/fire response procedures. Follow-up• training is to be performed prior to each change in phases of work where applicable. In addition, worker training shall meet the requirements of 29 CFR 1910.120.

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10. Personnel and Environmental Monitoring - Personnel exposures to toxic air contaminants, specifying appropriate action levels for donning personal protective equipment and emergency response.

11. Emergency Response Plan, Equipment and Procedures - Emergency spill control; first aid provisions and emergency equipment; communications and notification protocols; site evacuation procedures and contingency

plans; phone numbers.

12. Logs, Reports, and Recordkeeping - Safety inspection reports; medical certifications; training logs; monitoring results.

1.3 Regulatory Requirements The requirements of the Corps of Engineers (COE) Safety and Health Requirements Manual EM 385-1-1 and FAR Clause52.236, Accident Prevention, and OSHA Standards for General Industry, 29 CFR 1910, including 29 CFR 1910.120, Hazardous Waste Operations and Emergency I ponse, Interim Final Rule, December 1986, and the Construction Industry, ' EPA Standard Operating Safety Guides, November 1984; and the Occupational Safey and Health Guidance Manual for Hazardous Waste Site Activities, NIOSH, OSHA, USCG, and EPA, October, 1985, whichever provides the greatest degree protection, shall provide the basis for this project.

Exposure of personnel to airborne concentration of arsenic or lead above their CAL/OSHA action levels requires complete conformance with t e re^^em^ ®1 applicable CAL/OSHA Regulations, Title 8, California Administrative Code, General

Industry Safety Orders.

During a work day, no employee shall be exposed to airborne arsenic, cadmium, lead or selenium concentrations in excess to their respective Permissible

Exposure Limits (PEL). In addition, no employee shall be exposed to airbo™r SSSTcadSun, or hydrogen sulfide concentrations exceeding their recommended Threshold Limit Values as proposed by the American Conference of Governmental Industrial Hygienists (ACGIH); or to arsenic concentrations in excess of ceiling level recommended by NIOSH averaged over a 15-mmute period.

1.4 Responsibilities. The responsibility for the development, implementation and enforcement of the SHERP lies with Contractor's Certified Industrial Hygienist and the Contractor s Industri Hygiene Technician or Safety and Health Specialist who shall be present on site dSSS the remedial activities. The Contractor shall take all necessary precautions for the safety, of, and provide the necessary protection to prevent

damage, injury or loss to:

o All employees on the work site and other persons who maybe

affected thereby,

o All the work and all materials or equipment to be incorporated in the work whether on or off the site, and

o Other property at or adjacent to the Project site.

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The Contractor shall notify the Contracting Officer when the work may affect adjacent properties. All damage, injury or loss to any property caused by the work shall be remedied by the Contractor at no additional cost to the Government.

1.5 Accident Prevention Plan. As part of the SHERP, the Contractor shall submit a proposed Accident Prevention Plan that shall be followed by the Contractor and subcontractor personnel, including supervisory staff, during performance of the work. The plan shall be developed only after a careful analysis of the work involved has been completed and shall be tailored specifically to the conditions of the project.

As supplements to the basic Accident Prevention Plan, the Contractor shall prepare a safety plan for each phase of the work. A phase is defined as an operation involving work that represents hazards not experienced in previous operations or work to be performed by a new subcontractor. Each phase safety plan shall include, but not be limited to, a description of the work, probable hazards related to that work, and precautionary measures to be taken to reduce or eliminate each particular hazard. The actual work on each phase shall not be permitted to proceed until the phase safety plan is found to be acceptable by the Contracting Officer.

The Contractor's Accident Prevention Plan shall address, as a minimum, the following items:

o Responsibility o Accountability o Subcontractor Supervision — o Employee Orientation and Accident Prevention Training o Safety Meetings o Fire Prevention, Suppression and Protection o Explosive and Toxic Atmospheres o Accident Investigation and Reporting o Mechanical Equipment Inspection o Housekeeping and Sanitation o First Aid and Mechanical Facilities o Phase Safety Planning

1.6 Safety Inspections The Contractor shall perform; daily safety inspections of the job site and the work in progress to ensure compliance with the Corps of Engineers Manual EM 385-1-1 and other occupational health and safety requirements of the contract. Daily quality control reports shall be used to document the inspection and shall include a notation of the safety deficiencies observed and the corrective actions taken. The Contractor shall use his designated quality control staff and Certified Industrial Hygienist/Industrial Hygiene Technician to perform the required inspections and shall supply the staff with additional personnel as required. Additional personnel shall be provided at no additional cost to the Government.

2. SITE CONDITIONS AND ACTIVITIES

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2 l Site Description. The Celtor Chemical Works Superfund Site is located in Humboldt County of northern California, in the northern end of the Hoopa Valley (see Sheetl). The main portions of the site frequently referred to in these documents are the plantsite, the pasture below the plantsite, and a shallow gully that runs northward from the plantsite to the Trinity River. The plantsite and gully portions of the site are located on reservation land of the Hoopa Valley Indian Tribe, while that portion of the site located in the pasture (ab°u 1 acre) is private land owned by Mr. Bob Marshall, a Hoopa Valley resident. Both the gully below the site and a 1-acre portion of the pasture adjacent to the site are not a portion of the plant site but for the purposes of these specifications,

are included in the "site."

2.2 Chemicals Identified at the Site: The Remedial Investigation Report (EPA-WA 121.9L280, W69628.00, April 1986) presents the results of an extensive sampling program to characterize the soil, surface water and groundwater at the site. The results are summarized in Table J-l for the five meta s o concern defined in the Record of Decision (ROD), September 1985. The areas mentioned in

Table J—1 correspond to those defined in the RI report.

1. Pasture—west of the fishing access road including a surface drainage

ditch. (Area B of the Drawings)

2. Fishing Access Road—unnamed gravel road from State Highway 96 to the Trinity River passing through the site. (West part of areas A and F,

including the Fishing Access Road)

3. Former Tailings Pile-southwest of the process plant the fishing access road. (East part of areas A and F, excluding the

Fishing Access Road)

4. Process Plsnt-concrete slabs, walls and foundations and adjacent

unimproved roads. (Area E)

5. Gully—the drainage channel that extends from the process plant area to

the Trinity River. (Areas C and D)

All soils contaminated above the Site Specific Action 'soS

aome sampling locations, analyses indicated PA^inig£rative Code (CAC)

SS!aS eX°These hi£ contaminated areas and —entire

locations of higher health concern 0n® bS e°C®o yielded lead and zinc

depth) from the pasture, 50 fe , respectively. No other surface

TSSr soil's s rthi sL® JLES. drsinage ditch exceed the

Title 22 criteria.

Surface soils in e Pr S21f1 t12r000f gAg a zSfconcentrations from 995 concentrations ranging from 213 to It , J"® ... detected at one location to 17,200 mg/kg. Surface lead over Tit the fishing acCess road in the process plant area. ooHmium cooper, and zinc above Title adjacent to the site was contamina wi ' h plarvtsite was detected 22 criteria. Subsurface hazardous soil materials on tne pianu

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down to 2.5 feet under the former tailings pile, in the upper drainage gully northwest of the plantsite, and in the northeast corner of the site, and to 5.5 feet near the concrete structures.

Surface soils in the lower (north) region of the drainage creek gully showed the presence of hazardous soil materials for all six metals when compared to Title 22 criteria. In addition, many of the soil samples were found to have pH values in the ranges of 2 to 4.

Surface water metals concentrations in the drainage creek and springs were compared with background levels upstream of the site, and with Federal Drinking Water Regulations (DWR). Although these waters are not used for human consumption, comparison with the DWR provides a conservative estimate of water quality.

Surface waters in the drainage ditch upstream of the site comply with DWR for all metals except iron, which is four times the standard. Surface waters in the drainage ditch between the plant site and the road exceed background values for cadmium, copper, iron, and zinc by one to 20 times. Waters which surfaced from springs on the plantsite exceed the background values at one site for copper and

zinc.

Surface waters in the drainage ditch prior to mixing with the river exceed background values for cadmium, copper, iron, and zinc. Immediately downstream of the confluence of the drainage ditch with the Trinity River, all concentrations are below the DWR. Background iron concentrations in the Trinity River upstream of the confluence exceed the DWR. Surface water contamination appears limited to the drainage ditch east of the access road and downstream to the Trinity River.

Groundwater samples collected from three monitoring wells established onsite and downgradient show no contamination when compared to the DWR, except for iron.

Health hazards other than arsenic, cadmium, copper, lead and zinc may be present at the site. These include, but are not limited to, hydrogen sulfide, selenium and selenium compounds. No sampling data is available to confirm the presence or

absence of these other hazards.

Hydrogen sulfide "rotten egg odors" are a periodic nuisance at the site, as reported by the neighbors. Hydrogen sulfide is detected by odor at concentrations as low as ; 0.02 ppm. Odor is similar to rotten eggs at concentrations below 30 ppm; from 30 to 100 ppm it is sickeningly sweet. Hydrogen sulfide is heavier than air; vapors generally sink. Odors may become stronger when the soil is disturbed. ; Hydrogen sulfide is flammable and its explosive limits are upper -45.5%, lower — 4.5%. Extreme caution should be excercised if the demolition of existing structures uncovers closely enclosed spaces. There is no information available that indicates the existence of such spaces.

Selenium may also be present at the Celtor site since selenium occurs in nature usually in sulfide ores of heavy metals.

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Mercury and cyanide were detected at the site. Maximum concentrations found are 4.4 and 3.8 mg/kg respectively. It is not likely that they represent a serious health risk at the levels encountered at the site.

Other hazardous chemicals may also be present at the site, and the concentrations of the chemicals identified at the site may exceed the values given in Table 1-J.

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Table J-l

Area Arsenic (mg/kg)

Concentration Cadmium (rag/kg)

Copper (mg/kg)

Lead (mg/kg)

Zinc (mg/kg)

Pasture

Maximum Average

270 50

50 9

975 430

2650 250

11200 1440

Fishing Access Road

Maximum Average

165 35

104 13

3990 630

679 105

23300 3970

Tailings Pile

Maximum Average

270 35

69 6

5600 485

530 40

17200 1600

Process Plant

Maximum Average

295 55

30 7

124000 3080

1040 185

13900 1210

Gully Maximum Average

CAM TTLC(l)

600 105

500

310 36

100

25500 2830

2500

1680 300

1000

62100 6700

5000

(1) California Administrative Code, Title 22, Article 11, Total Threshold Limit Concentration.

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3. MEDICAL SURVEILLANCE

The Contractor shall utilize the services of a Board-certified or Board-elegible occupational health physician, licensed in the State of California, with knowledge and/or experience in the hazards associated with the project and at least thre years experience in occupational medicine to provide medical examinations and surveillance. The name of this physician shall be provided to the Contracting Officer along with a certified letter stating that he has been briefed on the site conditions and is aware of the hazards involved. A list ol physicians Board-certified in Occupational Health may be obtained from.

American Board of Preventive Medicine Wright State University School of Medicine P.O. Box 927 Dayton, OH 45401 Phone: (513) 278-6915

The Contractor's occupational health physician shall oversee all medical surveillance associated with work activities at the site. The physician shall be familiar with and follow the medical surveillance guidelines described m CAL/OSHA Section 5216, Lead Regulations and Section 5214, Arsenic Regulations. The laboratory selected to analyze blood lead levels must be approved y for Disease Control, U.S. Dept. of Health and Human Services.

3.1 snd Exit Medical Examination. Personnel involved in this operation shall be provided with medical surveillance V or to g icipation on-site ooerations, and at the conclusion of said operation. Written physical certification shall be furnished to the COR prior to any on-site operations. The initial medical examination shall include a work and comprehensive medical history, including smoking history; a physical examination with specm! attention to skiA, nose, respiratory tract, lymph nodes, nervous sy em. and liver, -Dosterior-anterior chest X-ray (14-inch x 17-inch); complete bloody count (CBC), urinalysis, and any other laboratory tests which the physician determines are indicated; sputum cytology examination; hemoglobin and hematocrit red cell indices, and examinations of peripheral smear morphoiogy.bioodur nitrogen and serum creatinine. Blood will also be measured for lead and ZPP (Zinc Protoporphyrin). The urinalysis shall also include analysis senic and low molecular weight proteins (to indicate cadmium exposure). A pul y function test shall be performed by trained personnel to record F ced Vital Capacity (FVC) and Forced Expiratory Volume in 1 second (FEV 1.0). An audiogram an visual acuity measurement, including color perception, shall be provided.

If -a chest x-ray has been completed within the last two years, details shall be provided A medical certification as to the fitness or unfitness for employment on this job, or any restrictions on his/her utilization of personal protective equipment that may be indicated, shall be provided by the Contractor s physi to tte Contracting Officer for each employee prior to permitting such person on-

site.

A final or exit medical evaluation is required when employment is terminated for

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any individual prior to completion of the contract, for any individual who takes at leave of absence of 10 days or more and at the end of the contract.

Entrance physicals, 4 hours of Site Specific Training and medical monitoring requirements shall be waived for all EPA officials, CDHS Officials, and EPA contractors for this and CDHS personnel, provided such person(s) have documented proof of having obtained equivalent requirements within the past 3b5 days.

3.2 Emergency Medical Care. Acting through the physician consultant, the Contractor shall prearrange for emergency medical care services at a convenient medical facility. The staff at the facility shall be advised of the potential medical emergencies that might result and that the patient's clothing and s in might be contaminated with specific chemicals.

3.3 Time Loss Illness. Any employee who develops a time loss illness or injuries during the period of the contract (whether job or non-job connected) shall be evaluated by the Contractor's physician. The Contractor shall be provided with a written statement signed by the physician prior to allowing the employee to re-enter the work site. (A written statement shall be submitted to the Contracting Officer as part of the safety report.)

4. INDUSTRIAL HYGIENE SUPPORT

The Certified Industrial Hygienist and Industrial Hygiene Technician or Safety and Health Specialist shall be the Contractor's employees or Subcontractors so designated and shall be primarily responsible for development, implementation an enforcement of the Safety, Health and Emergency Response Plan- The Industrial Hygienist and Industrial Hygiene Technician or Safety and Health Specialist sha have authority to act on all health, safety and emergency response matters and to establish new controls as needed. Additional or backup personnel shall be provided by the Contractor as needed to assure adequate full time health and safety control at all times when work is being performed at no extra cost to the

Government.

The names and qualifications of the Contractor's Certified Industrial Hygienist and Industrial Hygiene Technician or Safety and Health Specia is s a submitted and approved by the Contracting Officer prior to the submittal of the SHERP. If the Contracting Officer determines that personnel assigned are not adequately qualified in health and safety control matters, the Contractor shall obtain the services of other health and safety personnel having acceptable qualifications that meet the Contracting Officer's approval.

4.1 Certified Industrial Hygienist. The Contractor shall obtain the services of a Certified Industrial Hygienist to develop the SHERP, conduct initial hazard and personal protective equipment training of employees, and provide onsite support. The Certified Industrial Hygienist should be available near the site for supervision of the air monitoring program and the work of the Industrial Hygiene Technician or Safety and Health Specialist.

The Certified Industrial Hygienist shall have a minimum of three (3) years working experience in the chemical industry and/or chemical waste disposal industry. The Certified Industrial Hygienist shall have a sound working

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knowledge of State and Federal occupational health and safety regulations and formal training in occupational health and safety.

A list of personnel certified as Industrial Hygienists may be obtained from:

American Board of Industrial Hygiene (ABIH) 4600 W Saginaw, Suite 101 I Lansing, MI 48917 ; Phone: (517) 321-2638 i

4.2 Industrial Hygiene Technician/Safety and Health Specialist. When an acceptable SHERP has been developed and the initial hazard and personal protective equipment training of employees has been completed, and Industrial Hygiene Technician or Safety and Health Specialist, working under the direction of the Certified Industrial Hygienist, shall be utilized for the continued on-site health and safety surveillance. The Industrial Hygiene Technician or Safety and Health Specialist shall be a full-time position and shall be on site at all times during the performance of work.

The Industrial Hygiene Technician or Safety and Health Specialist shall have a minimum of two (2) years working experience in the chemical industry and/or chemical waste disposal industry. The Industrial Hygiene Technician or Safety and Health Specialist shall have a sound working knowledge of State and Federa occupational health and safety regulations and formal training in occupational

health and safety.

a. a HPR First Aid. The Industrial Hygiene Technician or Safety and Health Specialist shall be trained in CPR and i?lrst Ai £ techmques, ° h«CFR and First Aid qualified individuals shall be available at all tunes during

performance of work on-site.

5. RESPIRATORY PROTECTION PROGRAM

oSrSSi°in accordance11

National Standard ANSI £ 88.2-1980, Practices for Respiratory Protection. Respiratory Protection Program shall address as a minimum.

o Respirator Selection and Approval o Instructions for Use and Limitations (Training) o Respirator Assignment to Individuals for Use o Regular Cleaning and Disinfection of Respirators (Maintenance) o Routine Inspection During Cleaning o Work Area Surveillance for Exposure and Stress o Regular Inspection and Evaluation of Effectiveness of Program o Fitness of Wearers to Perform Tasks Using Respirators o Program Administration by Qualified Personnel o Respirator Fit (Qualitative for Half Mask; Quantitative for Full Mas ) o Facial Hair, Contact Lenses, and Eye and Face Protective Devices

o Issue of Respirators o Monitoring Respirator Use o Medical Surveillance

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6. FMPTiOYEE TRAINING

1 POT. 9q CFR 1910 120, Hazardous Waste Operations and Emergency 6.1 General Per 29 CFR lyiu.iz , , eauipment operators and

Response; Interim Final Rule, all emp oye health hazards, or safety general laborers! exposed to dous defined in 29 CFB hazards shall be thoroughly trained m the specmc suoje

1920.120.

ssssjs&s. st lrt oxnerience under the direct supervision of a trained, experienceu

supervisor Workers who may be exposed to unique or special hazards shall be pSSri diSonS training. The level of training provided shall be oonsrstent with the employee's job function and responsibilities.

On-site management and supervisors directly responsible for or who supervise employees engaged in hazardous waste operations shall receive training as provided in 29 CFR 1920.120 and at least eight additional hours of specialized training on managing such operations at the time of job assignment.

Trainers shall have received a level of training higher than and including the subject matter of the level of instruction that they are providing.

Employees shall not participate in field activities until they have been trained to a level required by their job function and responsibili y.

6.2 Initial Training. The Certified Industrial Hygienist shall be responsible for providing site-specific occupational health/safety hazard and personal protective equipment training to all employees, including Governm employees assigned to the site, prior to the commencement of work. The graining program shall be submitted , to the Contracting Officer for review as part of the SHERP and shall meet the requirements of the California Administrative Code, Title B, Sections 5216 and 5214. This training will be for a minimum of tour (4)

hours and shall include as a minimum:

o Basic operational safety emphasizing the hazards expected on this site, o Acute and chronic effects of the toxic chemicals at_the site, o Need for personal protection (effectiveness and limitations) o Proper use and fitting of respirator, o Personnel and equipment decontamination facilities and procedures, o Prohibited site activities, o Buddy system, o Medical examinations, o Emergency response and fire fighting, and o CAL/OSHA lead and arsenic training requirements.

6.3 Visitor Training. The Certified Industrial Hygienist and/or the Industrial Hygiene Technician or Safety and Health Specialist shall be responsible for training visitors to safely visit the site, make them aware of the hazards associated with the site and explain emergency procedures and the use of protective gear required during the visit.

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6.4 Follow-Up Training. Follow-up training shall be provided by the Industrial Hygiene Technician or Safety and Health Specialist at least weekly and prior to each significant change in operations. This training shall include basic training and special training. Basic training shall be conducted if problems have been observed during the previous week (i.e., improper use of respirators, protective clothing, etc.). Special training may be required if unanticipated problems occur on-site or a change in cleanup operations occurs. The Certified Industrial Hygienist or Industrial Hygiene Technician/Safety and Health Specialist shall also provide initial hazard and personal protective equipment training to replacement employees using the training outlines developed by the Certified Industrial Hygienist.

7. WORK ZONES

Work zones have been established on the plans (see Sheets 3,4)5 and 6). Any variations required by the Contractor shall be coordinated with and approved by the COR so that the contaminated materials are contained within the smallest area possible. The Contractor shall ensure that each employee has the proper personal protective equipment for the zone in which he is to perform work. Movement of personnel and equipment between zones and on and off the site shall be controlled by means of designated access points.

7.1 Exclusion Zone. The Exclusion Zone encompasses areas where contaminated soils are present.

7.2 Contamination Reduction Zone. The Contamination Reduction Zone shall be established by the Contractor as a buffer zone between the Exclusion Zone and the Support Zones. All personnel and equipment exiting the Exclusion Zone shall do so through the Contamination Reduction Zone. This zone shall contain the personnel and equipment decontamination stations described in this section. Because space limitations on this project, the Contamination Reduction Zone will be established partly in an area that currently contains contaminated soil. The method of developing the Contamination Reduction Zone is described in Section ID, Summary of Work.

7.4 Support Zone. The remaining areas of the job site shall constitute the Support Zone. No special clothing or protective equipment, except that required by EM 385-1-1, is required in these areas. Change and shower rooms, lunch and break areas, operational direction and support facilities (to include supplies, equipment storage and maintenance areas) shall be located in this area. No equipment or personnel shall be permitted to enter the Suppx>rt Zone from the Exclusion Zone without passing through the decontamination stations in the Contamination Reduction Zone. Eating, smoking and drinking shall be allowed only in indoor facilities in the Support Zone or off-site.

8. PERSONNEL PROTECTION REQUIREMENTS AND METHODS

All personnel protective equipment must be compatible with and provide protection against the chemicals identified on-site. The minimum required equipment is described in the following paragraphs. •

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8.1 Exclusion Zone Activities. The minimum initial required protection level for personnel entering or working in the Exclusion Zone is Level C. Level C equipment consists of:

° Full Face, Air Purifying Respirator equipment with high-efficiency particulate filters (99.97 percent efficient against 0.3 micron size mono disperse di (2-ethylhexyl) phthalate (DOP) particles),

o Hard Hat o Coveralls over Street Clothes. Disposable woven regular Tyvek

coveralls over street clothes shall be worn. As an option, disposable Tyvek overalls may be worn over disposable underwear,

o Steel Toed and Shanked Boots. Rubber safety boots may be worn, or rubber overboots may be worn over leather safety work boots.

o Eye Protection (Goggles or Face Shield) will be worn when operations present potential eye hazard,

o Nitrile Impregnated Gloves.

The respirator selected will be approved by NIOSH for protection against dust, fumes and mist. If air monitoring (see Section IT) indicates that airborne lead or arsenic concentrations exceeding 2.5 mg/m 3 or 0.5 mg/m3 respectively, are present on-site, respiratory equipment shall be upgraded in conformance with the requirements of CAL/OSHA Regulation CS-8, Section 5216, Lead Regulations and Section 5214 Arsenic Regulations, Title 8, California Administrative Code. Respiratory equipment shall also be upgraded if air monitoring indicates that airborne concentrations of cadmium exceeds 1 mg/m 3 or if airborne concentrations of copper exceed 5 mg/m 3.

Personnel operating heavy equipment during excavation of contaminated soils, structure demolition, and personnel engaged in soil sampling activities in the Exclusion Zone shall be required to wear respirators at all times during these activities.

The use of full time respirators by personnel in the Exclusion Zone may be relaxed, at the direction of the Certified Industrial Hygienist and Industrial Hygiene Technician or Safety and Health ; Specialist and with advance written approval from the COR. Respirators shall be carried at all times in a protective cover or case by all personnel in the Exclusion Zone and shall be worn as directed by the Industrial Hygiene Technician or Safety and Health Specialist.

8.2 Contamination Reduction Zone. The minimum required protection level for personnel entering or working in the Contamination Reduction Zone is Level D. Level D consists of the following:

o Hard Hat o Coveralls Over Street Clothes. Rubber aprons shall be worn over

disposable woven regular Tyuek coveralls for splash protection as required.

o Rubber Steel Toed and Shanked Boots. Rubber safety boots may be worn. Rubber overboots may be worn over leather safety work boots.

o Nitrile Impregnated Gloves o Eye Protection (goggles or face shield will be worn for splash

protection as required). 1

1J-15

Respirators shall be carried at all times. Respirators shall be worn at the direction of the Certified Industrial Hygienist or Industrial Hygiene Technician, based on the air monitoring results for this area. Workers shall not take street clothes worn at the site home after their work shift; instead, they will change to a second set of clothes.

9. PERSONNEL AND EQUIPMENT DECONTAMINATION.

9.1 Personnel. A decontamination station for personnel shall be set up in the Contamination Reduction Zone. All personnel exiting the Exclusion Zone must do so through this station. Personnel shall wash boots, gloves and respirators and safely dispose of outer coverall to assure that they are free of soils or mud from the Exclusion Zone prior to entering the Support Zone.

Contractor shall provide and maintain clean change rooms, lockers and shower facilities for all personnel in the Support Zone.; Personnel working in the Exclusion Zone or in the Contamination Reduction Zone shall remove their work clothes (coveralls, boots and gloves) and wash their hands and face before eating. Personnel shall use shower facilities before leaving the site area and at the end of their work shift. Work clothes shall be left in the change facility. No work clothing will be worn off or carried out of the project area.

Contractor shall provide all required work clothes. Clean clothing changes will be provided as needed if clothes become contaminated, but not less than one complete change shall be provided for each full work day. If non-disposable coveralls are worn in the Support Zone, work clothes shall be laundered daily. Non-disposable coveralls, if used, must be collected in closed receptacles labelled according to OSHA regulations and laundered by the Contractor or sent to a laundry. The laundry must be notified of exposure potentials of contaminated clothing per OSHA regulations.

Contractor shall provide nonperfumed soap and shampoos for washing and showers. Contractor shall provide towels, wash clothes and hairdryers. Personnel showering shall include washing hair. Water used for personnel decontamination shall meet Federal and State drinking water standards.

If the water treatment plant uses caustic solutions, an emergency eyewash and shower shall be provided next to the facility.

9.2 Respirators. Respirators shall be provided and maintained by the Contractor and will be cleaned daily. The Contractor shall provide in the Respiratory Protection Program details explaining how the daily maintenance shall be accomplished in accordance with the OSHA Standard CFR 1910.134. Each individual shall be assigned a respirator. No interchanging of respirators shall be permitted; therefore, they must be appropriately labelled. Filters shall be changed at least daily or more frequently upon direction of the Industrial Hygienist if sampling data indicates potential saturation concentrations exist. A procedure for assuring periodic cleaning, maintenance and changeout of filters shall be provided by the Contractor in accordance with the Respiratory Protection Program. '

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9.3 Equipment. The Contractor shall provide an equipment decontamination station within the Contamination Reduction Zone for removing soil from all equipment leaving the Exclusion Zone and Contamination Reduction Zone. All equipment exiting the Exclusion Zone and Contamination Reduction Zone must do so through this station. The station shall include a high pressure (50 psi minimum pressure) water wash for equipment and vehicles. The wash water shall be contained in a sump and pumped to a contaminated water storage tank. Vehicles and heavy equipment leaving the Exclusion Zone and Contamination Reduction Zone shall be thoroughly washed and visually inspected for signs of residual contamination prior to leaving the site. Water used for equipment decontamination shall meet Federal and State drinking water standards.

Trucks leaving the site which have not entered the Exclusion Zone shall be visually inspected and cleaned by removal of encrusted material from the sides

and undercarriage.

Trucks shall be lined and covered with secured plastic sheeting to prevent dispersion of loaded materials during transportation to the disposal facility and of residual materials during the return trip. Used plastic sheeting shall be

disposed of at the facility.

Any item taken into the Exclusion Zone must be assumed to be contaminated. Therefore, in general, vehicles, equipment and materials brought into the Exclusion Zone shall remain on-site until no longer necessary to the project except for trucks hauling contaminated soils and all concrete offsite. All contaminated vehicles, equipment and materials shall be carefully inspected and decontaminated to the satisfaction of the TOR before being taken off site. 'Hie Contractor shall set up controls, certified in writing by the on-site Industrial Hygiene Technician or Safety and Health Specialist, to assure that contaminated

items do not enter the Support Zone.

9.4 Equipment Maintenance. A designated area shall be established in the Support Zone for performing equipment maintenance. This area should be used when personnel are required by normal practices to expose themselves to contact with ground soil (i.e., crawling under a vehicle to change engine oil). The equipment shall be decontaminated by washdown in the Contamination Reduction Zone prior to maintenance work in the Support Zone. Maintenance such as greasing a crane or bulldozer need not require removal to the Support Zone unless the job requires body contact with the ground soil. No equipment maintenance shall be conducted

during unsupervised work periods. ;

Seats on equipment and vehicles used in the Exclusion Zone shall not be cloth covered. They shall be free from cracks or holes that would allow dust to enter seat padding or shall be covered with a temporary sheet vinyl covering.

9.5 Disposal of Remedial Activities Generated Wastes. Waste solids generated by the remedial activities (including used respirator filters and disposable protective clothing) shall be bagged, labeled and disposed of at a approved off-site hazardous waste disposal facility. Waste liquids shall be contained in contaminated water storage tanks. The liquids shall be treated in the water treatment plant and tested for arsenic, cadmium, lead, copper, and zinc to provide the basis for proper disposal.

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10. SUPPORT FACILITIES

Change, shower, lunch and break facilities shall be provided by the Contractor and all personnel must leave the work site through the facility. Contractor must provide one portable toilet in the facility and one outside in the Contamination Reduction Zone.

10.1 General Location shown on plans.

10.2 Layout. The Contractor shall submit a drawing for Contracting Officer review showing the layout of the actual facility.

10.3 Features shall include: o Smooth, watertight floors graded to drain to facilitate daily

cleaning.

o Provisions for Exclusion Zone and Contamination Reduction Zone employees to remove work clothing and wash up before eating lunch.

o Provisions for Exclusion Zone and Contamination Reduction Zone employees to remove all clothing and undergarments and "shower out" before leaving the work site.

o Air conditioning and lighting system.

o Hot and cold water system to provide warm water for showers, laundry (if on-site) and lavatories.

o Benches, tables, lockers, boot racks, etc.

o Wastewater from laundry (if on-site), showers, and floor drains to be piped to a contaminated water storage tank. Contractor shall provide chemical toilets.

o Sufficient shower heads.

o Towels.

o Pure (nonperfumed) soap and shampoo shall be used.

10.4 Changeroom. All Exclusion Zone clothing and clothing from Contamination Reduction Zone employees shall be put on and removed in this area. Provide benches plus tables or lockers for clothing and equipment. Provide floor drain.

10.5 Shower Room. Sufficient shower heads, desk or mats for walkways and a floor drain shall be provided.

10.6 Utility Area shall include floor drain, boot rack for washed boots to drain, hot water heater, sink and table for cleaning respirators, etc., as appropriate.

1J-18

10.7 Lunch Room. Floor drain optional. Daily scrubbing of floor with detergent and chlorine bleach or other suitable solution required.

10.8 Clean Room shall include lockers for employee street clothes; benches; showers; security area for valuables (as appropriate); floor drain optional, daily scrubbing of floor with detergent and chlorine bleach or other suitable solution required.

11. EMERGENCY PROVISIONS AND PORTABLE SUPPORT FACILITIES

When work is being performed in the Exclusion Zone or Contamination Reduction Zone, the following portable equipment and facilities shall be located in the Contamination Reduction Zone:

o Portable emergency shower/eye lavage with a capacity for providing clean water for at least 2 gpm for a 20-minute period (eye lavage) or a 35 gpm flow rate (shower).

o Two 20-lb. ABC-type fire extinguishers.

An adequately stocked first aid kit approved by the consulting physician shall be available on-site.

12. EMERGENCY RESPONSE PLAN

12.1 Emergency Response

The Emergency Response plan shall be posted at the changehouse and equipment decontamination station. The Emergency Response plain shall include the following minimum points:

o Contractor's physician's name, address and telephone number,

o Ambulance service name and telephone number, and

o Procedure for prompt notification of local health facilities and Fire Departments for emergency assistance.

o Procedures for prompt notification of COR and EPA.

o Specific procedure for treating personnel with excessive exposure to contaminants, and

o Special procedure(s) for trauma treatment during the period of time required for emergency unit response.

The names and telephone numbers of doctors, the Certified Industrial Hygienist, ambulance, fire and police shall be posted near the telephone. All employees shall be trained in a prearranged warning signal system for use in an emergency situation requiring team effort or evacuation. The training shall be provided as part of the Accident Prevention Plan's Employee Orientation and Accident Prevention Training. The training shall include the following:

1J-19

o Emergency equipment, locations and use,

o First aid and emergency medical treatment facilities, procedures, contacts and routes of egress,

o On-site communications and alarms.

Each work zone shall contain the following posting:

o Location of emergency showers/eye lavages; if the water treatment plant employs caustic : chemicals, one additional emergency shower/eye wash shall be located next to the facility.

12.2 Fire Protection: The fire protection section of the SHEEP shall include as a minimum:

| ;

o Fire emergency procedures, contacts and equipment.

o On-site communications and alarms.

o Procedures for prompt notification of COR and EPA.

12.3 Equipment. In addition to the fire:protection required by the Accident Prevention and Safety and Health Requirements Manual EM 385-1-1, the following protection is required.

o Two (2) 20-lb. ABC-type extinguishers in the Support Zone.

o A minimum size 10-lb. BC with each vehicle and item of motorized equipment used in the Exclusion Zone or the Contamination Reduction Zone. i

13. MONITORING REQUIREMENTS !,

13.1 Personnel Air Monitoring. Personnel air monitoring shall be performed to assess the degree of exposure to identified site contaminants during remedial activities and confirm the adequacy of the level of personnel protection. Personnel monitoring shall be performed at the start of the excavation operations and throughout the duration of the work. Monitoring shall be accomplished under supervision of the Contractor's Certified Industrial Hygienist, and shall be performed in accordance with the requirements of Section IT, Air Monitoring.

13.2 Area Air Monitoring. Area | air monitoring shall be performed in accordance with Section IT, Air Monitoring, to assess that contaminants above acceptable limits are not migrating into the Support Zone and are not migrating into off-site areas. Dust control measures shall be upgraded as required, based on the area monitoring results

13.3 Heat Stress Monitoring. Ambient temperatures at the site combined with the requirements for personal protective equipment may create heat stress.

I 1J-20

0

For monitoring the body's recuperative ability to excess heat, one or more of the following techniques shall be used as a screening mechanism. Monitoring of personnel wearing protective clothing shall commence when the ambient temperature is 70 degrees Fahrenheit or above. Workers shall be monitored for heat stress after each work period. Frequency of monitoring should increase as the ambient temperature increases or if slow recovery rates are indicated.

Heart rate (HR) shall be measured by the radial pulse for 30 seconds as early as possible in the resting period. The HR at the beginning of the rest period shall not exceed 110 beats per minute. If the HR is higher, the next work period shall be shortened by 10 minutes (or 33%), while the length of the rest period stays the same. If the pulse rate is 100 beats per minute at the beginning of the next rest period, the following work cycle shall be shortened by 33%.

— Body temperature should be measured orally with a clinical thermometer as early as possible in the resting period. Oral temperature (OT) at the beginning of the rest period shall not exceed 99 degrees Fahrenheit. If it does, the next work period shall be shortened by 10 minutes (or 33%), while the length of the rest period stays the same. However, if the OT exceeds 99.7 degrees Fahrenheit at the beginning of the next period, the following work cycle shall be further shortened by 33%. OT shall be measured again at the end of the rest period to make sure that it has dropped below 99 degrees

Fahrenheit.

Body water loss (BWL) due to sweating shall be measured by weighing the worker in the morning and in the evening. The clothing worn shall be similar at both weighings; preferably the worker shall be nude. The scale shall be accurate to plus or minus 1/4 lb. BWL shall not exceed 1.5% of the total body weight. If it does, workers shall be instructed to increase their daily intake of fluids by the weight lost.

Ideally, body fluids shall be maintained at a constant level during the work day. This requires replacement of salt lost in sweat as well.

Good hygienic standards must be maintained by frequent change of clothing and daily showering. Clothing should be permitted to dry during rest periods. Persons who notice skin problems shall immediately consult medical personnel.

The Certified Industrial Hygienist shall be responsible for developing procedures for heat stress monitoring of employees working in protective clothing or respiratory protection when ambient temperatures reach or exceed 70 ° F. Work-rest schedules shall be adjusted accordingly. The proposed work-rest schedules and heat stress monitoring program shall be submitted to the Contracting Officer for approval as part of the SHERP.

14. LOGS. REPORTS AND RECORD KEEPING

14.1 The Contractor shall maintain logs and reports covering the implementation of the SHERP. The format shall be developed by the Contractor to include training logs, daily logs, weekly reports and a phase-out report.

1J-21

14.2 The training log(s) shall include the following information for Site-Specific Training, follow-up and visitor training sessions.

Date and place Employee or visitor's name (attendance checked and signature) Time allocation in training session o Topics covered o Materials used o Equipment demonstration o Equipment practice for each employee o Prohibitions covered o Beards o Contact Lenses o Other o Buddy-System Explanation o Training performed to comply with 29 CFR 1910.120

requirements

14.3 Daily Logs of Safety Inspections

Date Area (specific zone) checked Employees in a particular area Equipment being utilized by employees named Protective clothing being worn by employees named Protective devices being used by: o Employee (named) o Area assignment of the employee Variations from SHERP Contractor Industrial Hygiene Technician's or Safety and Health Specialist's signature and date.

14.4 Weekly Reports

o Summary sheet covering the range of work being done. o Any incidents of:

o Nonuse of protective devices in an area where required, o Nonuse of protective clothing, o Disregard of buddy system : o Violation of eating, smoking, and chewing in prohibited

areas. o Misuse of any of the above. o Instances of job-related injuries and illness (an accident

repxxrt will be required). o Variations from SHERP

o Signed and dated copies of daily logs, o Personnel monitoring results.

o Copies of Medical Certificates for employees and visitors.

o o o

o o o o o o

o o

1J-22

o Certified Industrial Hygienist or Contractor's Industrial Hygiene Technician's signature and date. The Certified Industrial Hygienist or Industrial Hygiene Technician may be both the writer and reviewer.

o Date specified for the Weekly Report to be in the Office of the Contracting Officer.

14.5 Phase-Out Report. At the completion of the work, the Contractor shall submit a phase-out report. The report shall include:

o Final medical examination certification.

o Any accidents or illnesses and outcome of such occurrences.

o Complete summary of monitoring accomplished on the job to include personnel, air, decontamination verification and so forth.

o Variations from SHERP

o Final decontamination certification including procedures used to decontaminate:

o Equipment and vehicles o Support Zone facilities o Personnel decontamination facilities, etc

The report shall be signed and dated by the Project Superintendent and the Certified Industrial Hygienist. It shall be submitted to the Contracting Officer thirty (30) days prior to final acceptance.

14.6 Employer Obligation. The Contractor should be aware that Federal laws such as OSHA (29 CFR) may require chemical exposure records and/or medical records be maintained by employer for a specified length of time after the termination of the exposure.

15. IDENTIFICATION AND CONTROL

15.1 General. A check-in and check-out system shall be used so that there is control and a record of each employee and piece of equipment in each specific work area. The format for the system to be used shall be submitted as part of the SHERP. The system shall be established to provide the identity of all personnel working in the Exclusion Zone.

15.2 Exclusion Zone Marking. The outer limits of the Exclusion Zone shall be marked by fenceline marked with colored tape. Triangular-shaped red warning flags and signs shall be posted.

15.3 Equipment. Equipment and vehicles entering the Exclusion Zone shall fly an identifying red flag which shall remain in place until decontamination is accomplished and the item has been cleared to leave the site. Equipment and

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vehicles cleared to operate in the Support Zone and offsite shall fly a green fiag. :

15.4 Buddy System. The work in the Exclusion Zone shall be scheduled so as to assure that no employee works alone. Visual contact shall be maintained.

16 SIGNS

The Contractor shall post the following signs:

Signs shall be posted at the site and at entrance roads indicating that it is a hazardous area and that unauthorized entry is prohibited. EPA will describe the sign content, quantity and quality.

Signs shall be posted directing all visitors to the authorized entrance.

No smoking signs shall be posted in the area.

Project signs, warning signs, detour signs, and hazard signs will be posted as required.

17. NATURAL HAZARDS !

Natural hazards present in the site include, but are not limited to, poisonous snakes, spiders, poisonous plants, etc.

18. SUBMITTALS

The Contractor shall, in accordance with Section 1A - Special Clauses, submit the following items for approval:

o Safety, Health and Emergency Response Plan o Quality Control and Chemical Quality Control Plan.

o

o

o

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ATTACHMENT #1

(SAMPLE OUTLINE)

Pre-Employment Medical Evaluation

I (Title of Project) ,

Employee's Name: '

This is to certify that I have personally conducted a complete medical and work history, a physical examination, and evaluation of the employee identified above. The examination and tests were performed by myself or by a medical laboratory certified by the State of California. The evaluation included the items shown on the list which I have attached to this form.

In my opinion, on the basis of these examinations and evaluations, I feet the employee is physically and medically qualified for the proposed employment.

Date:

Signed: M.D.

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ATTACHMENT #2 (SAMPLE OUTLINE) (Title of Project)

Certificate of Medical Examination Return to Work After Illness or Injury

I certify that I have examined and declare him/her fit to return to work. Accident/illness description: ' Current status of symptoms: •

Date: Signed: ' M.D.

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ATTACHMENT #3 (SAMPLE OUTLINE)

Post-Employment Medical Evaluation (Title of Project)

I certify that I have reexamined __on this date following of employment on the

project, and certify that he/she is free of symptomatology and signs of impairment of health related to such employment. Date: Signed: " M.D.

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SECTION IK

CHEMICAL DATA QUALITY MANAGEMENT

INDEX

1. Project Description

2. Project Organization arid Responsibilities

3. Contractor Quality Control Plan

4. Sampling and Sample Custody Procedures

5. Reports

6. Calibration Procedures and Frequency

7. Analytical Procedures

8. Data Analysis and Reporting

9. Internal Quality Control Checks

10. Performance of System Audits

11. Preventive Maintenance

12. Procedure for Assessing Data Precision, Accuracy and

Completeness !

13. Corrective Action ,

Attachment #1: Sample Handling Protocol for Low, Medium and High Concentration

Samples of Hazardous Waste, October 1986

1K-1

1. PROJECT DESCRIPTION

1.1 General Background. The project involves the removal of soils and tailings materials, contaminated above the EPA site specific action levels shown in Table 1.1 below, to an approved off-site hazardous waste disposal facility. It also involves sampling, demolishing and disposing of existing concrete structures. If the concrete is contaminated above the California Administrative Code, Title 22, Division 4 criteria, it also will be removed to an.approved off-site hazardous waste disposal facility. If not contaminated above these levels, the concrete will be removed to an off--site Class III site.

Table 1.1 SITE-SPECIFIC ACTION LEVELS

Trinity River Soil Surface Water and at site

Total Soluble Groundwater Onsite Discharge Point Contaminant (mg/kg) (mg/1) (ug/L) (ug/L)

Arsenic 100 5 50 50 Cadmium 25 1 10 2.8 Copper 2,500 25 1,000 13.5 Lead 500 5 50 50 Zinc 5,000 250 5,000 47 Mercury 20 0.2 None Specified None Specified Selenium 100 1 tt M tl If

Cyanide 200 2 tl If tt tt

Analysis for Total Concentration shall be by EPA SW-846 and Analysis for Soluble Concentration shall be in accordance with the State of California, California Administrative Code, Title 22, Division 4. Analysis for sulfide is also required for all soil and water samples, but action levels are not specified. (For information only)

Soil testing performed during construction will document that the soils remaining onsite contain concentrations below the above levels. Soil will first be removed to the depths identified on Sheet 2 of the Plans. Subsequently, the final limits of excavation will be determined by soil sampling and analysis to demonstrate that the remaining soil is below the site-specific action levels referenced above. Imported clean soil will be brought to the site and used as backfill for the excavation. Backfill soil testing will document that the borrow matrials are free of contamination.

1K-2

Work areas on the site will be separated into three zones: an Exclusion Zone in the known or suspected contaminated area; a Contamination Reduction Zone, which serves as a buffer to reduce the spread of contamination and houses the : decontamination facilities; and a Support Zone which is outside of the area of significant contamination and serves as an entry point to the site, and houses site services and s.torage yard.

1.2 General Requirements

1.2.1 The Contractor's quality control procedures shall include all of the normal Corps of Engineers (COE) required quality assurance (QA) activities and shall be in accordance with the provisions of Attachment #1 and other applicable EPA regulations.

1.2.2 The Contractor shall provide a properly equipped laboratory and experienced staff to provide specified services and analyses. The laboratory facilities, instrumentation and the analytical and technical personnel assigned to this project must be approved by the COR prior to authorization for the Contractor to work in the contaminated area. In addition, the ; laboratory must be inspected and approved by the COR prior to authorization for the Contractor to work in the contaminated area.

1.2.3 The Contractor is advised of the necessity for a prompt turnaround of analytical results so as not to endanger conformance with the project schedule. A maximum two-day turnaround is required for all analysis with the exception of metals soluble concentrations when five-day turnaround is allowed.

1.2.4 Within 21 days of Notice of Award, the Contractor must submit within 21 days of Notice for review and approval, a detailed laboratory practices protocol as part of the Contractor Quality Control Plan (CQCP) as described in this section. The CQCP must be approved by the COR prior to authorization for the Contractor to work in the contaminated area. ;

1.2.5 The methods of analyses of soils shall be as described in "Test Methods for Evaluating Solid Waste Physical/Chemical Methods" by the USEPA Office of Solid Waste and available from the U.S. Government Printing Office (SW-846), and in the California Assessment Manual. See Section 1K-7, Table 7.1.

1.2.6 The Contractor shall collect duplicate soil and water samples, of 10 percent of each type (duplicate or split and appropriate blanks) in most cases or 1 per set per matrix of the total water and soil samples to be made available to COE for QA purposes. (Refer to Sect 4.1 and Table 4.1 for details.) The COE sample handling protocols (Attachment #1) based on EPA guidelines will be used for the external QA samples. The Contractor shall ship these samples to the QA laboratory for analyses and serve as liaison between the analytical laboratory and the QA laboratory.

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1.2.7 Letters of commitment shall be obtained by the Contractor from his laboratory (ies) agreeing to analyze the soil, water, and air samples collected. The following information shall be submitted with the letters of commitment:

o Name of Laboratory(ies) o Address of Laboratory(ies) o Name and Telephone Number of Responsible Contact

for the Laboratory(ies)

1.2.8 The labortory shall meet the "Recommended Requirements for Independent Laboratory Qualification," published by the American Council of Independent Laboratories and shall be inspected and approved by the Contracting Officer for the tests to be performed.

1.2.9 The laboratory which analyzes air monitor samples shall be accredited under the Laboatory Accreditation Program of the American Industrial Hygiene Association.

1.2.10 The Contractor shall submit to the Contracting Officer descriptions of the laboratory(ies). The descriptions shall include a — layout diagram of the laboratory and the project related equipment to be used.

1*3 Air Samples. Air monitoring shall be conducted for the duration of the work at the Celtor site using NIOSH and/or EPA standard methods as defined in Section 1-T.

1.4 Soil and Concrete Samples. Soil samples shall be collected to verify removal of the icontaminated soil to specified pollutant concentration levels. Soil samples shall be properly obtained, transferred, preserved, packaged and stored in the field and in the laboratory, in accordance with these specifications, Attachment #1, and EPA SW 846 procedures. Sampling procedures and sample preservation must be consistent with the requirements for arsenic, cadmium, copper, lead, zinc, mercury, sulfide, cyanide and selenium. The Contractor shall collect backround samples and the Quality Control (QC) samples needed by his laboratory. At least one QC sample shall be collected by the Contractor for every 10 samples. The Contractor shall also collect and send QA samples to the Corps of Engineers, Missouri River Division Laboratory (MRDED-L) for analysis. QA samples shall include blanks and splits. Blanks shall consist of rinsates and soil backround samples. The total number of blanks shall not be less than 10 percent of the total number of samples. In addition, the Contractor's laboratory shall provide split samples, as requested by the Contracting Officer, of approximately 10 percent of the total samples to be available to COE for QA purposes.

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Borrow materials shall be sampled and tested to verify that they are free of contamination. QC/QA requirements for borrow material samples shall be as specified for the site soil samples.

Refer to Section 1K-4.1 and Table 4.1 for required number of samples including QA and QC samples. Refer to Section 1K-4.3 and Tables 4.2 and 4.3 for Sample Size, Containers, Preservatives, Methods, Equipment, Equipment Decontamination and Nature of Blanks.

Soil sampling and analysis shall follow EPA-approved methods for solid waste (see Table 7.1, Section 1K-7). Modifications require prior approval by the Contracting Officer.

Borrow materials shall be tested for all Inorganic Persistent and Bioaccumulative Toxic Substances for soluble and total concentrations. (California Administrative Code, Title 22, Division 4, Article 11), for Organochloride Pesticides and PCB's by EPA Method 8080, for Volatile Organics by EPA Method 8240 and for Semivolatile Organics by EPA Method 8270.

1.5 Chemicals Present at the Site. The Remedial Investigation Report (WA 121.9L280, W69628.00, April 1986) presents the results of an extensive sampling program to characterize the soil, surface water and groundwater at the site. The results are summarized in Table 1.2 for the five metals of concern defined in the Record of Decision (ROD), September 1985. The areas mentioned in Table 1.2 correspond to those defined in the RI report:

1. Pasture—west of the fishing access road including a surface drainage ditch (Area B of the Plans)

2. Fishing Access Road—unnamed gravel road from State Highway 96 to the Trinity River passing through the site (West p)art of areas A and F, including the Fishing Access Road)

3. Former Tailings Pile—southwest of the process plant area and east of the fishing access road (Area A and east jsart of area F, excluding the Fishing Access Road)

4. Process Plant—concrete foundations'and adjacent unimproved roads (Area E)

5. Gully—the drainage channel that extends from the process plant area to the Trinity River (Areas C and D).

In addition, many of the soil samples were found to have pH values in the range of 2 to 4.

Surface soils on the plantsite and tailings area yielded copper concentrations ranging from 213 to 124,000 mg/kg, and zinc concentrations from 995 to 17,200 mg/kg. Surface lead contamination was detected at one location on the plantsite at 1040 mg/kg. One surface sample from the access road adjacent to the site was contaminated with cadmium (104 mg/kg), copper (3990 mg/kg), and zinc (23,300 mg/kg). Subsurface zinc contamination on the plantsite was detected down to 2.5 feet under the former tailings pile (17,200

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mg/kg), in the upper drainage gully northwest of the plantsite, and in the northeast corner of the site (6240 mg/kg).One subsurface soil sample (1- to 2.5-foot depth) from the pasture, 50 feet from the road, yielded lead and zinc concentrations of 2,650 mg/kg and 11,200 mg/kg, respectively.

Surface water metals concentrations in the drainage channel and springs were compared with background levels upstream of the site, and with Federal Drinking Water Regulations (DWR). Although these waters are not used for human consumption, comparison with the DWR provides a conservative estimate of water quality.

Surface waters in the drainage channel upstream of the site comply with DWR for all metals except iron, which is four times the standard.

Surface waters in the drainage ditch • between the plant site and the road exceed background values for cadmium, copper, iron, and zinc by one to 20 times. Waters which surface from springs on the plantsite exceed the background values for copper and zinc at one site.

Surface waters in the drainage channel prior to mixing with the river exceed background values for cadmium, copper, iron, and zinc. Immediately downstream of the confluence of the drainage ditch with the Trinity River, concentrations of these elements, except for iron, are below the DWR. Background iron concentrations in the Trinity River upstream of the confluence exceed the DWR. Surface water contamination appears limited to the drainage ditch east of the access road and downstream to the Trinity River.

Downgradient Trinity river and groundwater samples collected from three monitoring wells established onsite and downgradient show no contaminants above background levels.

Other hazardous chemicals may be present at the site, and the concentrations of the chemicals identified at the site may exceed the

values given in Table 1.2.

1K-6

Table 1.2

Area Arsenic (nig/kg)

Pasture

Maximum Average

270 50

Concentration Cadmium (mg/kg)

50 9

Copper Lead (mg/kg) (mg/kg)

(mg/kg)

975 430

2650 250

Zinc

11200 1440

Fishing Access Road

Maximum Average

165 35

104 13

3990 630

679 105

23300 3970

Tailings Pile

Maximum Average

270 35

69 6

5600 485

530 40

17200 1600

Process Plant

Maximum 295

Average 55

30

7

124000

3080

1040

185

13900

1210

Gully Maximum Average

TTLC(l)

(1) California Administrative Code, Title 22, Division 4 , Article 11 Total Threshold Limit Concentration.

600 310 25500 1680 62100

105 36 2830 300 6700

500 100 2500 1000 5000

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2. PROJECT ORGANIZATION AND RESPONSIBILITIES

The Contractor Quality Control Plan (CQCP ) shall define project management responsibilities. Key personnel shall be identified and their functions and qualifications described. Project-related qualifications and certification of the Contractor's laboratory facilities and the analytical instrumentation shall be described in detail. The laboratory's Standard Operating Procedures (SOPs) shall be included and shall conform to Good Laboratory Practices (GLPs). Personnel responsible for performing the laboratory analyses (supervisory, chemists and technicians) shall be identified and resumes of project-related experience and education shall be included in the CQCP. The Contractor shall be responsible for obtaining all analysis data required for disposal of hazardous waste by the selected qualified hazardous waste disposal facility.

2.1 Contractor Responsibilities. The Contractor shall:

2.1.1 Provide all laboratory facilities and qualified personnel, and provide access to the work, as required.

2.1.2 Furnish labor, equipment and facilities to obtain and handle samples at the project site, to facilitate inspection and analyses, and to provide storage, preservation (including refrigeration) and cooling of the samples as necessary.

2.1.3 Ensure that transportation, chain-of-custody, and ultimate disposition of samples takes place in accordance with EPA procedures as defined in EPA SW-846 and EPA 600/4-84-076.

2.1.4 Perform the required analyses.

2.1.5 Provide for documentation and data management of the analysis results.

2.1.6 Collect and ship duplicate/split samples of 10 percent of the total number of samples collected to the Corps of Engineers Quality Assurance Lab (MRDED-L). Duplicate/split samples shall be containerized in a manner suitable for shipment and maintenance of sample integrity. The COR will provide instructions for QA Samples. COE/EPA protocols for sampling, chain of custody, sample handling, preservation, storage and shipping shall be followed.

Refer to Section 1K-4.5, Table 4.3 for exact requirements regarding the number of duplicates/splitsi

2.1.7 Perform the specified inspections, sampling and analysis of materials:

2.1.7.1 Comply with specified standards. '

1K-8

2.1.7.2 Ascertain compliance of materials with requirements of the Contract Documents.

2.1.8 Provide for calibration of equipment.

2.1.9 Provide for internal laboratory quality control.

The nature of QC duplicates or splits is summarized in Table 4.2, Section 1K-4.3.

Refer to Section 1K-4.5, Table 4.3 for exact requirements regarding the number of QC blanks and duplicates.

2.1.9.1 Blank samples.

The nature of QC blanks is summarized in Table 4.2, Section 1K-4.3.

2.1.9.2 Duplicate samples or split samples.

The nature of QC duplicates or splits is summarized in Table 4.2, Section 1K-4.3.

2.1.10 Promptly submit two copies of a written report of each analysis to the Contracting Officer. Each report will include but is not limited to the following:

. Date issued.

. Project title and number.

. Laboratory name, address and telephone number.

. Name and address of laboratory inspector.

. Date of analysis.

. Sample number, identification, and location.

. Results of analysis.

3. CONTRACTOR QUALITY- CONTROL PLAN The Contractor . shall be responsible for submitting a Contractor Quality Control Plan (CQCP) in accordance with the provisions of the specifications which shall include laboratory and analytical protocol and sufficient inspections and tests of all items of work, including that of subcontractors, to ensure conformance to applicable specifications and drawings.

The Contractor is responsible for furnishing qualified personnel, appropriate facilities, instruments, and testing devices necessary for the performance of the quality control.

The Contractor is responsible for all analysis needed in fulfilling the contract, and for the quality of all data produced by his laboratory.

The CQCP shall clearly define the project management responsibility for ensuring compliance with Quality Assurance/Quality Control (QA/QC) protocols. The Contractor QA/QC pfficer shall report to a responsible

1K-9

senior officer of the contracting company, and : shall function independently of the Project Manager.

The CQCP shall be site-specific and shall include, as a minimum, the following items:

o project description. o project organization and quality management requirements, o sampling and sample custody procedures, o analytical/statistical/control parameters, o calibration procedures and frequency, o preventive maintenance, o data analysis and reporting, o contractor reports, o performance audits.

The following elements shall be addressed in the applicable sections of the CQCP

o The role of the subcontractor(s) ;

o A copy of the letter . notifying the Contractor personnel responsible for quality control about exact duties and responsibilities. The letter should be signed by a responsible executive manager of the company.

o Authorities and responsibilities of all quality control personnel

o Schedule of field or laboratory inspections.

o Proposed analytical methods for use by designated technicians performing assigned method(s).

o Proposed sample collection, handling, storage, transfer, and recording protocols, including chain-of-custody procedures; names of personnel collecting samples; monitoring equipment used (brand, model, serial number); calibration of monitoring equipment; names of work personnel wearing monitoring equipment; description of work site and any unusual conditions.

o Selection and testing of replicate and split samples, blanks and standard (known) samples.

o Provision of performance audit samples to the Contractor's laboratory, if appropriate, and provision of split/replicate samples and field blanks to the Contracting Officer for QA purposes.

o Method of performing, documenting, and monitoring quality

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control operations of the Contractor and subcontractors, including frequency of inspection/checks.

4. SAMPLING AND SAMPLE CUSTODY PROCEDURES

4.1 Sampling Plan: A summary of the Sampling Plan is presented

in Table 4.1, which specifies the minimum number of field samples, QC

and QA samples for each matrix to be sampled. The number of field QC

samples (blanks and splits or duplicates) shall be 1 of each type per

10 with a minimum of 1 sample per shipment. An equal number of QA

samples will be collected and shipped to the MRDED-L. The specific

locations for soil, groundwater and surface water samples shall be as

follows: 1

4.1.1 Groundwater from the three existing wells shall be tested before the beginning of excavation. After the approval of the results of testing by Contracting Officer, Contractor shall seal well G-l as shown on Sheet 7. The two other wells shall be tested again after the completion of excavation.

4.1.2 Soil sampling and analysis shall be performed by the . Contractor upon completion of excavation shown on Sheets 3 through 6 — and after removal of each additional 6" of soil as specified in Section 2C. Location of soil samples shall be based on the grid 40 ft x 40 ft or 20 ft x 20 ft as shown on Sheets 3 through 6 except for the gully area where the Contractor shall collect a sample each 40 ft along the centerline of the gully. Soil samples shall be taken at the base of the excavation to determine that the remaining soil is below site specific action levels. Samples should not be taken in areas of standing (ponded) water. Samples shall be collected from the bottom surface of the excavation with a clean sampling instrument. A new, clean sampling instrument is required for each sample.

4.1.3 The existing concrete structures on site shall be sampled using a concrete coring machine in accordance with ASTM C42-84a, Section 4, Vol. 4.02. Concrete samples shall be prepared in accordance with ASTM C85-66, Section 4, Vol. 4.02 in the laboratory and a representative aliquot taken for analysis. Concrete samples shall be core samples taken across i the full thickness of the wall or slab. At least one sample shall be collected from each wall and slab. If surface disclorations are evident, sampling shall be at the discoloration spot. If no discoloration is present, samples shall be located shall be approximately in the slab geometrical center or on the wall vertical centerline at six inches vertical distance measured from the ground or lower surface. Exact sample location shall be approved by the COR.

4.2 Sampling Procedures. Sampling procedures shall be addressed as part of the CQCP and shall require prior approval by the COR. Sampling and sample custody procedures shall be consistent with the guidelines described in Sample Handling Protocol for Low, Medium and High Concentration Samples of Hazardous Waste (Attachment #1), EPA SW-

III-11

846, and other EPA-approved documents related to sampling (NIOSH for Air Monitoring). The Contractor shall notify the COR each day of his proposed sampling activities.

Table 4.2 specifies' sample , container size and type, method of preservation and turn around times. : Table 4.3 specifies suggested sampling methods, sampling! devices, etc. The Contractor may select from a variety of sampling devices/methods, and shall modify the table car. /^P£r°£^ane but sha11 stay within the methods set forth in EPA bUU/4-84-076 Characterization of Hazardous Waste Sites - A Methods Manual: Volume II. Available Sampling Methods, Second Edition", December 1984. The Contractor shall inform the COR of Contractor's selected sampling methods and shall obtain its approval in advance. Sampling personnel shall be trained in the procedures to be used for this project. The Contractor shall provide evidence of the experience and training of the designated sampling team. A description of the individual responsibilities of the sampling team shall be provided with professional resumes describing their education and experience.

4,3 Sample Containers: The Contractor shall supply all required sample containers and shipping materials and containers for field samples, his laboratory's QC samples and COE QA samples. New sample containers, plastic or glass as specified in EPA-600/4-79-020 are required. Samples shall be preserved and shipped according to EPA and DOT guidelines and COE Sample Handling Protocol for Low, Medium and High Concentration Samples of Hazardous Waste (Attachment #1). Sample preservation shall be performed immediately upon sample collection. Only new (not reused) sample containers shall be used in this project.

Tables 4.2 and 4.3 : summarize sample size, containers, preservatives, contract required turn around times, sampling methods, devices, and equipment decontamination procedures.

Groundwater samples shall be collected after suitable purging as set forth in Section 3.4 of EPA 600/4-84-076 "Characterization of Hazardous Waste Sites - A Methods Manual: Vol. II. Available Sampling Methods , Second Edition.

. 4,4 Sample Identification. A field log notebook shall be kept indicating:

The time/date of sample collection Location of samples collected (written description and map references). Description of the sample. Sample container type. , Provisions for sample preservation. Sample container number.

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Table 4- 1 -Sampling Plan Summary

Soil, Concrete and Water Estimated Number of Samples to be Taken (1)

Matrix

Soil

Groundwater

Concrete

(3) Surface Water

Analysis

2n, Cu, Cd, Pb Hg, Sulfide, Cyanide, As, Se Zn, Cu, Cd, Pb Hg, sulfide, Cyanide, As, Se Zn, Cu, Cd, Pb Hg, Sulfide, Cyanide, As, Se Zn, Cu, Cd, Pb Hg, sulfide, cyanide, As, Se

Minimum Number of

Field Samples (41

181

20 wall samples 10 slab samples

ND

QC Samples (Contractor Lab)

Splits/ Blanks(2) Duplicates

20 18

10% Field Samples

10% Field Samples

QA Samples (Government)

Splits/ Total Numbed Blanks(2) Duplicates of Samples

20 18

10% Field Samples

10% Field Samples

257

10

42

ND

Backfill soil CAC Title 22 Total and Soluble Inorganic Toxic Substances; Organochloride Pesti­cides and PCB's (EPA 8080); Semi-Volatile Organics (EPA 8270) and Volatile Organics (EPA 8240)

15 23

( 1 ) ( 2 ) (3) (4)

( 5 )

( 6 )

Corps Sample Handling Protocol 3/86 should be followed. (Attachment #1) Blanks shall include background soil samples (2) and sampling equipment rinsates (18) Sampling and analysis required prior to disposal of any stored volume of treated water. Number of soil samples does not include resampling to determine the final limits of excavation, if necessary (see paragraphs 1.1 and 4.1.2) ND: Not determined Includes Contractor and Government samples.

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- Table 4.2

Sample Size, Containers. Preservation Methods

• and Turn Around Times ;

Matrix

Soil

Backfill

Analysis

Zn, Cd, Cu, Pb Hg, Sulfide, Cyanide, As, Se the 5 analyses

Sample Size & Container

One 16 oz glass wide mouth jar at least 3/4 full with Teflon-lined lid for

Inorganic Per- One 16 oz glass and sistent wide mouth jar bioaccumulative at least 3/4 full Toxic Substances with Teflon

Groundwater and Surface Water

Organochlorine Pesticides and PCB's (EPA Method 8080) Semi-volatile Organics (EPA Method 8270)

Volatile Organics (EPA Method 8240)

Zn.Cd, Cu, Pb Hg, As and Se (Total Metals)

Sulfide

Cyanide

One 11 glass bottle - Teflon lined cap

40-ml glass vial with Teflon-lined septum

One 1 L high-density polyethylene bottle. Do not filter. Teflon-lined cap

One 1 L high-density polyethylene bottle. Teflon-lined cap.

One 1 L high-density polyethylene bottle. Teflon-lined cap.

Preservation

4 °C

4 °C

Contract Req'd Turn Around Time

2 days (total cone.) 5 days

(soluble conc.

2 days (total conc.)

5 days (soluble conc.

4°C Refrig-2 days erate sample container before sampl­ing at 4°C, store in the dark

4°C; store in 2 days the dark

4°C; HNO 2 days (50%) until pH 2 (about 3mL)

4 °C; Add 4mL2 days of 2N zinc acetate and

NaOH to pH 9

4°C; Add 4 NaOH 2 days pellets to (See Note pH 12 below.)

NOTE: Maximum holding time for cyanide is 24 hours when sulfide is present. Optionally, all cyanide samples may be tested with lead acetate paper before pH adjustments in order to determine if sulfide is present. If so, it can be removed by adding Cd (NO )2 powder until a negative spot test is obtained. Sample is filtered and NaOH added.

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Table 4.3

Suggested Sampling Methods, Sampling Devices, QC/QA Blanks, arid Equipment Decontamination Procedure

Matrix Sampling Method Sampling Device Nature of Blanks

Equipnent Decontamination

Soil-surface

Concrete

Water-surface

Water-groundwater

EPA-600/4-84-076 ; Sect 2.2.1 Method

II-l "Soil Sampling •with a Spade and Scoop"

ASTM C42-84a Section 4, Volume 4.02 ("Standard Method of Obtain and Testing Drilling Cores")

EPA-600/4-84-076 Sect 3.2.1 Method III-l "Sampling Surface Waters Using a Dipper or Other Transfer Device:

EPA-600/4-84-076 Sect 3.4.3 Method III-9 "Sampling Monitoring Wells with a Bucket" and Section III-7 or III-8 "Purging..." the well prior to sampling

Teflon coated or stainless

steel 316 scoop

Concrete coring machine, dedicated

Background soil :

sampler rinsates

N/A

Tap water rinse. Alconox soap rinse. Deionized water rinse.

Same as above.

Teflon or stain­less steel 316 dipper; dedicated.

Sampler rinsate

Same as above.

Stainless steel 316 or Teflon double check valve bailer; dedica­ted.

Sampler rinsate

Same as above.

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b

Samples shall be labeled with waterproof tags. These log notebooks and tags shall form the basis of a chain-of-custody, when accompanied by properly completed chain-of-custody forms.

5. REPORTS

In addition to the CQCP, which is subject to approval and/or modification by the Contracting Officer with the concurrence of other COE elements prior to Notice to Proceed, other reports are required. The formats for these reports shall be listed in the CQCP. These reports are as follows;

5.1 Contractor Quality Control (CQC) Daily Report. A daily report shall be submitted to the COR during cleanup activities. The daily report shall contain, at a minimum, the following:

Location of work. Weather information. Work performed. , • Specific inspections performed and results. Problems identified and corrective actions taken. Verbal or written instructions from government personnel involved. Types of tests performed,, samples collected, personnel involved, and results of tests. General remarks. Contractor's certification. Copy of daily field log notebook pages

5.2 "Contractor Quality Control (CQC) Project Summary. At the end of the construction effort, the Contractor shall prepare, for the Contracting Officer, a summary of CQC during the project. The report shall be a consolidation and summary of the CQC Daily Reports.

6. CALIBRATION PROCEDURES AND FREQUENCY

A list of field and laboratory instrumentation (include details on manufacturer, models, accessories, etc.), procedures used for calibration and frequency, of checks shall be required. The instrumentation and calibrations shall be consistent with the requirements of the contract, and the EPA-approved (NIOSH for Air Monitoring) analytical method requirements.

7. ANALYTICAL PROCEDURES

The analytical procedures to be used shall be EPA-approved (NIOSH for air monitoring) standard methods. The exact methods to be used for soils, concrete and water samples are specified in Table 7.1. Digested concrete samples shall be adapted for metal/chemical analysis by EPA SW-846. Analytical procedures for air samples are presented in Section IT. ,

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Proposed deviations from these methods by the Contractor or Contractors laboratory must first be approved by. COR. Additional sample characterization requirements may be imposed by the off-site hazardous waste disposal facility selected to receive these wastes.

Alternate methods or modifications shall require the prior approval of the COR. • . !

8. DATA ANALYSIS AND REPORTING

For each analytical method and major measurement parameter, the following information shall be provided:

' ; , I

8.1 The data analysis scheme including units and equations required to calculate concentrations or the value of the measured parameter.

Each data sheet shall contain the following information: Data Extracted/Prepared: Data Analyzed: . , Concentration/Dilution Factor: Units: ug/L or mg/kg V Lab Name: ' l Lab Sample ID No.: Sample No. : QC Report No.:

Appropriate analytical and instrument information must be kept in appropriate, separate bound notebooks in indelible ink-(not on separate sheets). This includes sample calculations.

8.2 -The principal criteria that will be used to assure data integrity during collection and reporting.

8.3 Plans for treating outliers.

8.4 Description of the data management systems, including but not limited to the collection of raw data, data storage and data quality control and assurance documentation.

8.5 Identification of raw data, data storage and data quality control and assurance documentation.

8.6 Identification of individuals to be involved in the report

sequence.

9. INTERNAL QUALITY CONTROL CHECKS

Internal quality control checks shall be made to evaluate periodically the terms of performance reliability for each measurement parameter. Internal QC checks shall include analyses of blank samples, duplicate and spiked samples (and reference standards as appropriate) followed by appropriate corrective measures to be taken if values are outside

./• M ' 1K-17 ;

i

Table 7.1

Methods for Waste and Backfill Soils Characterization

Analysis

Zn, Cu, Cd, Pb Hg Sulfide Cyanide As Se

Matrix/Method (3) Soil & Concrete (1, 4, 5)

6010 7470 or 7471

9030 9010

_ 7060 or 7061 ... . 7740 or 7741

Surface Water (2)

200.7 245 376 335 206 270.2

Backfill Soils(1,5)

Inorganic Persistent and Bioaccumulative Toxic Substances, Total and Soluble Concentrations Organochloride Pesticides and PCB's Serai-Volatile Organics Volatile Organics

N/A

N/A N/A N/A

N/A

N/A N/A N/A

CAC Title.22, Division 4, Article 11

8080 8270 8240

1. EPA SW-846

2. EPA 600/4-79-020 Revised 1983

3. Additional requirements may be imposed by RCRA-approved hazardous waste disposal facility selected to receive these wastes.

4. ASH1 C42-84a for concrete coring, AS™ C85-66 for digestion (Section 4, Volume 4.02) and adaptation to metal analysis.

5. Methods of analysis for determining soluble concentrations shall be in accordance with the State of California, California Administrative Code, Title 22, Division 4.

6. N/A: Not applicable

1K-18

established control limits where the nature of the samples is such that use of control limits is applicable. If not, additional replicates or other corrective action will be required. The CQCP shall include a discussion of the corrective actions to be pursued.

Quality control samples shall be at least 10 percent of the samples and maybe substantially higher ifj required by method specific procedures, (eg, analysis of blank air sample filters) Should the Contractor wish to seek an adjustment of the types and frequency of QC sample analyses to other than that specified for a particular method, supporting evidence of justification must : be presented to and approval obtained from the Contracting Officer. ,

Refer to Table 4.1, for the exact number of QC blanks and duplicates. The nature of the QC blanks is summarized in Table 4.3.,

10. PERFORMANCE OF SYSTEM AUDITS: ' I

The Contractor's laboratory must be validated by the Contracting Officer prior to the start of work. This process requires review of a generic Laboratory Quality Management Plan and also will include one or more on-site inspections of the laboratory by QA laboratory personnel. Further, the proposed laboratory will be sent performance audit samples for chemical analyses. If the laboratory does not pass Corps requirements, smother laboratory must be selected by the Contractor.

11. PREVENTIVE MAINTENANCE 'I

Plans for preventive maintenance of equipment shall be reviewed and approved as part of the CQCP. A system for preventive maintenance for facilities" and instrumentation shall be described. Preventive maintenance shall be performed by qualified personnel, records shall be maintained and shall be available for inspection by the COE on request and subsequent repairs, adjustments and calibrations shall be recorded.

12. PROCEDURES FOR ASSESSING DATA PRECISION, ACCURACY AND COMPLETENESS

The Contractor shall furnish, as \ part of his CQCP, procedures for determining data precision, accuracy and completeness along with how he will assess the quality of , : chemical data produced as part of the contract. These procedures shall be in accordance with the provisions of ER 1110-1-263. The Contractor shall report accuracy based on given standards for the analysis performed. In addition, other statistical procedures which may be specified are:

12.1 Arithmetic mean, range, standard deviation used to assess the dispersion of data.

12.2 Accuracy, bias and precision methods of variability.

12.3 U-test, significance.

T-test, chi square test used for determining

i ' ' '

:j IK-19

12.4 Confidence limits, testing for outliers.

13. CORRECTIVE ACTION

The CQCP shall include a protocol describing corrective actions to be taken by the Contractor with specifically defined feedback systems. Limits, of data acceptability as defined shall be included with the corrective actions to be taken when these limits are exceeded. When limits are exceeded, information justifying the poor recovery or precision shall be documented.; The COR will then decide what further corrective action, if any, need be taken. Personnel responsible for initiating and carrying out corrective action shall be indicated in the protocol.

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SECTION 1L

TEMPORARY UTILITIES AND CONTROLS

INDEX

1. Scope 6.

2. Related Requirements 7. 3. Requirements of Regulatory Agencies 8.

4. Materials, General 9» 5. Temporary Electricity and Lighting

1. SCOPE

Temporary Telephone Service Temporary Water Temporary Sanitary Facilities Traffic Regulation

1.1 Provide all on-site facilities (field offices, personnel decontamination facility, employees shelters, etc.) with appropriate utilities such as electricity, telephone service, water, and sanitary service. The Contractor will submit Temporary Utility Plan to the COR and receive approval of the plan prior to installing any temporary utilities. Installation, maintenance, and removal of utility services are the responsibility of the Contractor. Payment for temporary utilities and controls will be Bid I for 1. No other payments will be made for these items.

2. RELATED REQUIREMENTS

2.1 Section 1A: Special Clauses 2.2 Section 10: Security 2.3 Section IP: Field Offices and Sheds

3. REQUIREMENTS OF REGUTATORY AGENCIES

3.1 Comply with current National Electric Code. 3.2 Comply with Federal, State and local codes and regulations, and

comply with utility company requirements.

4. MATERIALS, GENERAL

4.1 Materials may be new or used, but shall be adequate in capacity for the required usage, must not create unsafe conditions, and shall not violate requirements of applicable codes and standards.

5. TEMPORARY ELECTRICITY AND LIGHTING

5.1 Arrange with utility company to have them provide service required for power and lighting, and pay all costs for service and for power used. Arrange for sufficient transformer capacity.

5.2 The Contractor is responsible for determining actual power requirements and arranging with the local utilities for installation and

1L-1

service of a new transformer and associated wiring and electrical equipment as necessary to perform site work activities.

5.3 Install circuit and branch wiring with area distribution boxes located so that power and lighting are available throughout the construction site.

5.4 All circuits throughout the construction site shall be protected either by a ground fault interrupter or an approved grounding system in accordance with paragraph 15.C.09 of EM 385-1-1 of ACOE regulations.

5.5 Work shall cease if natural light is not adequate for work except emergency work as determined by the Contracting Officer.

5.6 All electrical work shall be in accordance with latest issue of the National Electric Code.

5.7 The Contractor shall be responsible for disconnecting and removing the temporary electrical and lighting systems at the completion of the site work.

5.8 If, in the opinion of the Contractor, portable generators of sufficient capacity are more economical than utility electrical service, they may be used. Contractor is responsible for securing all necessary permits required to operate portable generators. .....

6. TEMPORARY TELEPHONE SERVICE ;

6.1 The Contractor shall arrange with the local telephone service company to provide separate direct line telephone service at the construction site. The service required includes:

6.1.1 Two-direct line instruments in Contracting Officer's field office.

6.1.2 Two-direct line instruments in Contractor's field office.

6.1.3 Other instruments at the option of the Contractor, or as required by the regulations.

6.1.4 Contractor shall be responsible for arranging for removal of all telephone service at the completion of the site work.

6.1.5 Contractor will pay all costs for installation, maintenance, and removal, and service charges for local calls. Hie Contractor shall be reimbursed for any toll charges incurred by the Government and Contracting Officer.

7 . TEMPORARY WATER

7.1 The Contractor shall arrange for water to be brought in to the site. Water shall be required for dust control, for decontamination

1L-2

facilities, and for personnel use. There are no city water lines in the vicinity of the site. [

7.2 If the Contractor elects to utilize Trinity River water for non-potable uses, he shall be responsible for obtaining all necessary permits; pay all costs for installation, maintenance, and removal of required equipment and service charges for water used.

7.3 The quantity of water required for equipment and facility decontamination is not known.

7.4 Water shall be available for the health, safety and emergency response activities and potable water needs. The Contractor must determine these requirements and obtain service.

8. TEMPORARY SANITARY FACILITIES

8.1 All sanitary facilities shall be of the chemical toilet type. The Contractor shall provide the sanitary facilities in compliance with state and local regulations. The Contracting Officer's trailer shall be provided with a chemical toilet and wash facilities that can be integrated inside as a part of the office. All sanitary wastes shall be collected and removed from the site in an appropriate manner.

9. TRAFFIC REGULATIONS

9.1 Provide for a smooth flow of vehicular traffic, particularly at the site entrance and in the parking areas. The Contractor shall identify in his security plan the roads required to be used during his operation, and provide passes for equipment and personnel as required.

I

1L-3

SECTION 1M SPILL CONTROL

INDEX

1. Work Included 3. Spill and Discharge Control Plan

2. Equipment Required 4. Submittals

1. WORK INCLUDED

1.1 The Contractor shall develop, implement, maintain, supervise, and be responsible for a comprehensive Spill and Discharge Control Plan. This plan shall provide contingency measures for potential spills and discharges from trucks handling off-site transportation (See Section 2F) and from other potentially hazardous materials on-site. This plan shall be submitted to the COR for review and approval prior to any on-site work.

1.2 The Contractor shall provide methods, means, and facilities required to prevent contamination of soil, water, atmosphere, uncontaminated structures, equipment, or material by the discharge of waste from spills due to Contractor's operations.

1.3 The Contractor shall provide equipment and personnel to perform emergency measures required to contain any spillage and to remove spilled materials and soils or liquids that become contaminated due to spillage. This collected spill material shall be properly disposed of at the Contractor's expense.

1.4 The Contractor shall provide equipment and personnel to perform decontamination measures that may be required to remove spillage from previously uncontaminated structures, equipment, or material. Decontamination residues must be properly disposed of at the Contractor's expense. For any hazardous substance this will require disposal in compliance with Section 2G at a disposal unit which is in compliance with the EPA Off-Site Disposal Policy and approved by the COR.

2. EQUIPMENT REQUIRED

The Contractor shall provide for any unexpected spills or discharge and the following minimum equipment shall be kept on site at all times during site work activities:

2.1 Noncombustible absorbent. ; 2.2 Front-end loader. 2.3 Drums (55 gallon, U.S. DOT 17-E or 17-H). 2.4 Shovels. 2.5 Pumps. 1

2.6 Material for constructing temporary berms.

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3. SPILL AND DISCHARGE CONTROL PLAN

3.1 Spills. If a spill occurs, the following actions shall be taken by the Contractor.

, i

3.1.1 Notify the Contracting Officer immediately.

3.1.2 Take immediate measures to control and contain the spill within the site boundaries. This shall include the following actions:

3.1.2.1 Keep unnecessary people away, isolate hazardous areas, and deny entry.

3.1.2.2 Do not allow anyone to touch spilled material.

3.1.2.3 Stay upwind; keep out of low areas.

3.1.2.4 Keep combustibles away from the spilled material.

3.1.2.5 Use water spray to reduce vapors and dust, as

3.1.2.6 Implement spill clean-up procedures. needed.

3.1.2.7 Take samples for analysis to determine that cleanup is adequate (see Section IK).

3.1.2.8 Other actions, as needed.

3.1.3 General spill control actions the Contractor will implement are as follows:

3.1.3.1 Solid Spills. Remove and place contaminated materials into dry containers and cover; label the container as to contents; dispose of the container properly as , soon as possible. (See Section 2F, "Off-Site Transportation," and Section 2G, "Off-Site Disposal."

3.1.3.2 Liquid Spills. Absorb with sand, clean fill, or noncombustible absorbent material. Dispose of the absorbent/spill mixture in the manner specified in the previous subsection, 3.1.3.1, "Solid Spills."

3.2 Discharges. If a discharge of material stored in tanks or drums

occur, the following actions shall be taken by the Contractor to reduce

potential migration to adjacent properties: 1

3.2.1 Notify the Contracting Officer immediately. I

3.2.2 Take immediate measure to control the discharge within the site boundaries or beyond the site boundaries, if necessary. This Shall include the following actions:

3.2.2.1 Contain and eliminate the discharge, if possible.

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a

3.2.2.2 Remove i or retrieve any discharged liquids or sludges, if possible.

3.2.2.3 Keep unnecessary people away; isolate the hazardous area and deny entry.

3.2.2.4 Do not allow anyone to touch the discharged

materials.

3.2.2.5 Other actions, as needed.

3.2.3 General discharge control actions the Contractor shall implement are as follows: ;

3.2.3.1 Liquid Discharge to Soil. Immediately identify the point of discharge, and take measures to eliminate further spills. Absorb discharge material with sand, clean fill, or noncombustible absorbent material. Place the absorbent/discharge mixture into dry containers. Dispose of as soon as possible (see Section 2F and 2G).

3.3 Notification of Spills and Discharges. If the spill or discharge is reportable, and/or human or the environment is threatened, the Contractor shall immediately implement the Spill and Discharge Control Plan as outlined in these specifications. All spills and discharge shall be documented in a written Spill Report to the COR within 24 hours of the incident.

After the release of a hazardous substance in a quantity equal to or exceeding the reportable quantity determined by 40 CFR 302 in any 24-hour period, the Contractor shall immediately notify the National Response Center ((800) 424-8802). If direct reporting to the NRC is not possible, a report shall be made to the EPA Region IX ((415) 974-8131).

Reportable quantities are:

Arsenic 1 lb

Cadmium 1 lb

Copper 5000 lb I

Lead (sis PbS) 5000 lb

Zinc 1000 lb

Selenium 100 lb

Cyanide 1 lb

Mercury 1 lb

Release of mixtures and solutions shall comply with 40 CFR 302.7 (b).

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In addition, the Contractor shall comply with the State of California notification requirements as stated in CAC Title 22, Article 20.

3.4 Decontamination Procedures. Decontamination procedures may be required after cleanup to eliminate traces of the substance spilled or reduce it to an acceptable level as determined by the Contracting Officer. Complete cleanup may require removal of contaminated soils. Personnel decontamination shall include showers and cleansing or disposing of clothing and equipment. All contaminated materials including cloth, soil, concrete, and wood that cannot be decontaminated must be properly containerized, labeled, and properly disposed of as soon as possible.

4. : SUBMITTALS ' i ' ; i

4.1 Spill and Discharge Control Plan

4.2 Spill Report(s) shall be submitted to the 00R within 24 hours of

the incident. 1

4.3 Incident Report(s) shall be submitted to CDHS within 15 days after the incident, with copies to the COR.

The report shall include:

1) Name, address and telephone number of the Contractor. ~ 2) Name, address and telephone number of the facility. 3) Date, time and type of incident (e.g., fire, explosion). 4) Name and quantity of material(s) involved. 5) The extent of injuries, if any. 6) An assessment of actual or potential hazards to human health or

the environment, where this is applicable. 7) Estimated quantity and disposition of recovered material that

resulted from the incident.

1M-4

1. , General 2. Related Work

1. GENERAL

1.1 The Contractor shall conduct operations and maintain the project site so as to minimize the creation and dispersion of dust. Observation of visible dust, measurement of total suspended particulate (TSP) in excess of lmg/m3, measurement of respirable particulates (FM10) in excess of 0.5 mg/m3 or Industrial Hygienist directives shall cause the Contractor to initiate dust control measures. Air monitoring shall be as specified in Section IT.

2. RELATED WORK j

2.1 Section 1C: Environmental Protection 2.2 Section 1M: Spill Control i I 2.3 Section IT: Air Monitoring !

2.4 Section 2A: Site Preparation

3. > PRODUCTS ' J : 1

i 3.1 Water. The Contractor shall provide clean water, free from oil and other deleterious materials. Treated vehicle and personnel decontamination waters shall be used for dust control purposes only if they meet site specific action levels : for surface water. As stated in 2D, paragraph 6.4, a representative sample of the treated water shall be collected and analyzed by the Contractor prior to its disposition as a dust control agent. I '

4. EXECUTION I : • !

4.1 Water Application j

4.1.1 Apply water with equipment consisting of a tank, spray bar, and pump with discharge pressure gauge. Any other method proposed for controlling the application of water shall require advance approval by the Contracting Officer. . !

4.1.2 Arrange spray bar height above grade; arrange nozzle sp>acing and spray pattern to provide complete coverage of ground with water.

4.1.3 Conform to Sections 1C and 1M.

4.1.4 Water runoff shall be avoided by limiting water flows to the minimum required for dust control. ; '

. 1N-1 , • '. ! •

SECTION IN DUST CONTROL

INDEX •'

3. Products 4. Execution

4.2 Dust Suppressant

4.2.1 All disturbed areas, upon completion of work, shall be sprayed with a dust suppressant. Provide details of manufacturer's recommendations for rate of application (sample submittal, manufacturer technical literature) for approval of the Contracting Officer.

4.2.2 All disturbed areas shall be sprayed with a dust suppressant wherever work is to be suspended for a period of 24 consecutive hours or longer, or when directed by the COR.

SECTION 10 , > SECURITY

INDEX

1. Site Control

1. SITE CONTROL

1.1 Control of all personnel and vehicles entering and leaving the project site shall be provided by the Contractor. The Contractor shall exclude from the site personnel not properly identified. The Contractor shall:

1.1.1 Maintain a current list of accredited persons and submit a copy of the list to the Contracting Officer on request. ;;

1.1.2 Require a display of proper identification by each person.

1.1.3 Require personnel to sign in upon entering the site and to sign out when leaving.

1.1.4 Maintain a log of all vehicles entering and leaving the site.

1.1.5 Allow no visitors without the approval of the Contracting Officer. Visitors shall not be permitted to enter contaminated work areas without the express written permission of the Contracting Officer.

1.1.6 Maintain log of visitors.

1.1.7 Require signature of visitors on a form relieving the U.S. Government, State of California, its officers, employees, and agents of any liability for consequences related to potential hazards associated with site entry.

1.1.8 Provide his own site security as required. Twenty-four hours manned site security shall be provided beginning with the first day the Contractor leaves any materials on-site and shall continue until the Contractor removes all temporary facilities after completion of the construction project. Security personnel shall not perform other job site functions.

1.1.9 Immediately contact the Contracting Officer if unauthorized personnel are attempting to gain access to the site.

1.1.10 Maintain an entry and exit checkpoint at the periphery of the fenced Exclusion Zone to regulate flow of personnel and equipnent and to verify that entry and exit procedures are followed.

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1.2 Site Security Protocols. (See Section 1U)

1.2.1 A security plan or protocols must be submitted to the Contracting Officer for approval within 10 days after the Notice to Proceed. This plan shall address but is not limited to:

site. a. Personnel responsible for security of the construction

b. Duties. c. Names. d. Description of proposed daily security operation (i.e.

walking patrols, gate control). e. Provisions for conducting security checks; method and

frequency of checks. f. Description of how the following breaches of security

shall be handled: 1) unauthorized personnel on the site, i.e. vandals; 2) site boundary security is penetratable, i.e. broken fence, doors opened in building onto site from outside site, etc.; 3) unauthorized personnel attempting to gain access to' the site; i.e. television or newspaper people, public interest groups.

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SECTION IP FIELD OFFICES AND SHEDS

INDEX

1. General 2. Requirements 3. Personnel Decontamination Facility

4. Employee Shelters

1• GENERAL

5. 6 . 7.

Products Execution Government Office

Field

1.1 The Contractor shall provide the necessary field offices and sheds for the staff necessary to carry out the project as specified.

1.2 Related Work

1.2.1 Section 1A: 1.2.2 Section 1J

Requirement 1.2.3 Section 1L: 1.2.4 Section 2A: 1.2.5 Section 2D:

Special Clauses Safety, Health

Temporary Utilities Site Preparation Contaminated Liquid

and Emergency Response

and Controls

Collection and Disposal

2. REQUIREMENTS

2.1 Prior to installation of offices and sheds, the Contractor shall consult with the Contracting Officer in regard to location, access, and related facilities.

2.2 The Contractor shall provide sanitary facilities at the work site. (See Section 1L).

2.3 The Contractor shall supply janitorial services on a daily basis.

2.4 Requirements for Facilities

2.4.1 The Contractor shall construct or establish structurally sound and weather-tight facilities, with floors raised above ground and open to allow free circulation of air under the facility.

2.4.2 At the Contractor's option, portable or mobile buildings may be used as on-site project facilities. Mobile homes, when used, shall be modified for office use.

2.4.3 Living quarters shall not be established at the site.

2.4.4 All facilities shall be maintained at a positive air pressure above outdoor conditions.

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3. PERSONNEL DECONTAMINATION FACILITY

3.1 This facility shall be Contractor supplied and shall provide a shelter divided into two sections, one area being a contaminated dressing room and the other a clean dressing room. This facility shall be located in the Contamination Reduction Zone as shown on the drawings. Further specifications are outlined in Section 1J, "Safety, Health and Emergency Response Requirements."

3.2 The size of the shelter and facilities shall accommodate the largest number of employees expected on the site at the same time.

3.3 Benches and lockers shall be provided to accommodate the largest number of employees expected on the site at the same time.

3.4 Light, heat, and ventilation shall be provided according to local codes. Air conditioning shall also be provided. The facility shall be maintained at a positive pressure compared to outdoor conditions.

3.5 Shower and handwashing facilities shall be between the contaminated and clean sides of the Personnel Decontamination Facility.

3.6 An emergency shower/eye wash shall be provided within the contamination reduction zone.

3.7 All wash waters shall be collected, stored and managed as appropriate, and disposed of as outlined in Section 2D, Contaminated Liquid Collection and Disposal.

4. EMPLOYEE SHELTERS

4.1 The Contractor shall provide a shelter in the Support Zone where personnel can eat, drink and smoke.

4.2 Personnel shall be required to remove their contaminated clothing and to wash their hands and faces (as a minimum) before entering lunch or break areas (see Section 1J, Safety, Health and Emergency Response Requirements).

5. PRODUCTS

,5.1 Materials, Equipment, Furnishings. These may be new or used, but shall be serviceable in the judgement of the Contracting Officer, adequate for the required purpose, and meet applicable codes and regulations.

6. EXECUTION

6.1 Preparation. The Contractor shall fill and grade the designated areas, as needed, for temporary structures and facilities in accordance with Section 2A, Site Preparation.

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6.2 Installation. The Contractor shall install the temporary Personnel Decontamination Facility, employee shelters, and storage sheds on proper foundations and shall provide connections for utilities.

6.2.1 Temporary structures shall be securely anchored to protect against overturning in the event of excessive wind.

6.2.2 Provide steps landings and appropriate handrails at all doors.

6.3 Maintenance and Cleaning. The Contractor shall provide daily maintenance and cleaning for temporary structures, furnishings, equipnent, and services.

6.4 Removal

6.4.1 The Contractor shall decontaminate and remove temporary field offices and contents, and remove services when no longer needed. Decontamination shall involve cleaning dust from all exposed surfaces.

6.4.2 Remove decontaminated storage sheds when no longer needed.

6.4.3 Analyze, remove, and dispose of foundations and debris as required by appropriate state and Federal solid and hazardous waste regulations, clean the areas, and restore the areas to the grades shown on the drawings.

7. GOVERNMENT FIELD OFFICE

7.1 The Contractor shall provide and maintain an approved office meeting the following requirements as the space and facilities for the exclusive use of the Corps of Engineers and CDHS/EPA. The unit shall provide approximately 400 square feet of floor area. Tie downs shall be installed as recommended by the manufacturer if the office is a mobile facility.

7.1.1 General. The Contractor shall provide a suitable office for the Corps of Engineer.

7.1.2 The office shall be adequately heated, well lighted, suitably ventilated, cooled with a refrigerated-type air conditioning unit and complete with all piping and electrical connections. A adequate supply of cold drinking water shall be furnished and maintained. Open parking space for three vehicles and water and sanitary facilities shall be located inside the field office building.

7.1.3 The combined parking and building area shall be enclosed inside the secure area in the Support Zone. Materials for the facilities need not be new provided they are adequate for the intended use. Parking and drive areas and walk areas shall have rock or gravel surface.

1P-3

7.1 .4 The Contractor shall furnish the office with the items: •

1- fire extinguisher 1- plan lack 3- desks with chairs 1- telephone answering 3- waste baskets machine/cordless telephone 3- conference table 3- telephones

(3'x 5' minimum) 2- Direct Telephone Lines 2- Portable Hand Radios, 1- Copier, Monroe RL-614 or

W/Recharger, Uniden equal Model Number APU44K 1- Xerox Telecopier, Model or equal Number 710 (Automatic)

1- Lockable File Cabinet, 1- Refrigerator w/separate Four Drawer Metal Full freezer, 9 cu. ft. minimum Suspension with two keys 6- Stackable Chairs

7.1.5 All utility bills shall be paid by the Contractor for the duration of the contract. Contractor shall be reimbursed for Government long distance calls.

7.1.6 The Contractor shall provide .janitorial services on a daily basis and all labor necessary to maintain and clean all surfaces of the office. Entrance doors shall be equipped with substantial locks. The entire facility, including furniture, shall remain the property of the Contractor and shall be removed from the site after completion of the work.

7.1.7 Availability, Location and Occupancy. The Contractor shall submit a preliminary plan and description of the office facilities which he proposes to furnish prior to proceeding with procurement thereof. Fuel, electricity, lighting, telephone and water shall be furnished by the Contractor. The entire cost of the building, heating, air conditioning, lighting, water supply, and maintenance shall be borne by the Contractor as a subsidiary obligation without separate payment. The office, building facilities, and services shall be furnished for the duration of this contract and upon completion thereof, the office and building, shall be removed from the site. Location of office is to be submitted to the Contracting Officer for approval. The Government Office shall be set up onsite prior to any onsite operations.

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SECTION 1Q PROJECT RECORD DOCUMENTS

INDEX

1. General Requirements 2. Maintenance of Documents

1. GENERAL REQUIREMENTS

1.1 The Contractor shall Officer one record copy of:

3. Submittals

maintain at the site for the Contracting

1.1.1 Drawings 1.1.2 Specifications 1.1.3 Addenda 1.1.4 Modifications to the Contract 1.1.5 Contracting Officer's Field Orders

Instructions 1.1.6 Written reports of any significant QA problems 1.1.7 Daily work activity summary reports, including

or Written

1.7.1 1.7.2 1.7.3 1.7.4 1.7.5 1.7.6 1.7.7 1.7.8 1.7.9 1.7.10 1.7.11 1.7.12 1.7.13 1.7.14 1.7.15

1.1.7.16

Field test records Photographs Reports on any emergency response actions Manifest documents and variance reports Records of all site work Chain-of-custody documents Truck-load tickets and shipping papers (manifests) All laboratory analytical results Meterological records Daily inspection records for staging/storage areas All safety and accident incident reports Reports on all spill incidents Air monitoring reports and data Construction quality control daily reports Other items as may be required by the Contracting Off icer Results of chemical analyses by Contractor

2 .

1.2 All project record documents shall be suitable for microfilming.

MAINTENANCE OF DOCUMENTS

2.1 The Contractor shall store documents in the Contractor's field office apart from documents used for work.

2.1.1 Provide files and racks for storage of documents.

2.1.2 Provide locked cabinet or secure storage space.

1Q-1

2.2 File documents and samples to facilitate retrieval.

2.3 Maintain documents in a clean, dry, legible condition and in good order. Do not use record documents for work purposes.

2.4 Legibly mark each section of the specification and addenda to record changes made by Field Order or by Change Order.

2.5 Make documents available at all times for inspection by Contracting Officer.

3. SUBMITTALS

3.1 At the completion of field operations, the Contractor shall deliver record documents to the Contracting Officer including a consolidation and summary of the analytical and chemical QC result.s in final report format.

3.2 Accompany submittal with transmittal letter in duplicate, containing:

- Date Project title and number Contractor's name and address Title and number of each record document Signature of Contractor or his authorized representative

1Q-2

SECTION 1R DEFINITIONS

INDEX

1. Definitions 2. Abbreviations

1. DEFINITIONS

The following definitions, in addition to those contained in Section 1A Special Clauses, shall apply to the work of his contract:

1.1 Off-Site Hazardous Waste Disposal Facility: A hazardous waste disposal facility which has been approved by the COR and meets the requirements of Procedures for Planning and Implementing Off-Site Response Actions Memorandum, U.S.E.P.A, Office of Solid Waste and Emergency Response, May 6, 1985.

1.2 Contamination Reduction Zone. Buffer zone between the exclusion zone and the support zones.

1.3 Contracting Officer Representative (COR). Any person assigned such responsibility and authority by the Corps of Engineers and who has responsibility for day-to-day field surveillance duties.

1.4 Exclusion Zone. Site areas that are contaminated above acceptable levels and require special health and safety protective gear be worn. Identified on the plans.

1.5 Monitoring. The use of direct and indirect reading field instrumentation to provide information regarding the levels of solids, gases or vapors that are being generated during remedial action. Monitoring shall be conducted to evaluate employee exposures to heavy metals, particulates and toxic materials as well as off-site migration of airborne contaminants.

1.6 On-Site Personnel. On-site porsonnel include the Contracting Officer and his representatives, Contractor, and state and Federal representatives.

1.7 Rinsate. Wash water generated from cleaning contaminated equipment.

1.8 Clean Fill. Uncontaminated silty sand or clayey sand.

1.9 Support Zone. An area outside the zone of significant contamination.

2. ABBREVIATIONS \<

The following abbreviations are used:

1R-1

2.1 ABIH. American Board of Industrial Hygiene. 2.2 ACGIH. American Conference of Governmental Industrial Hygienists. 2.3 AIHA. American Industrial Hygiene Association. 2.4 ASTM. American Society for Testing and Materials. 2.5 Not Used 2.6 CDHS. California Department of Health Services. 2.7 CALTRANS. California Department of Transportation. 2.8 CAM. California Assessment Manual. 2.9 CLP. Contractor Laboratory Program. 2.10 COD. Chemical oxygen demand. 2.11 COR. Contracting Officer's Representative. 2.12 CPR. Cardio-Pulmonary Resuscitation. 2.13 OQCP. Contractor Quality Control Program. 2.14 BCD. Electron Capture Detector. 2.15 EP. Extraction Procedure. 2.16 GC. Gas Chromatography. 2.17 GC/MS. Gas Chromatograph/Mass Spectrometry. 2.18 GLP. Good Laboratory Practices 2.19 IC. Ion Chromatography. 2.20 Not Used 2.21 MBAS. Methyl Blue Active Substance. 2.22 NEIC. National Enforcement Investigation Center. 2.23 NIOSH. National Institute for Occupational Safety and Health. 2.24 OSHA. Occupational Safety and Health Administration. 2.25 CAL/OSHA.State of California/Department of Industrial Relations. 2.26 PAT. Proficiency Analytical Testing. 2.27 Not Used 2.28 PEL. Permissible Exposure Limit. 2.29 PPE. Personnel Protective Equipment. 2.30 ppm. Concentration measure in parts per million (means ug/mL

(microgram per milliliter) or mg/L (milligram per liter); however may mean ug/g (migrogram per gram)).

2.31 QA. Quality Assurance. 2.32 QC. Quality Control. 2.33 QMP. Quality Management Plan. 2.34 RCRA. Resource Conservation and Recovery Act. 2.35 SOP. Standard Operation Procedures. 2.36 SPCC. Spill Prevention Control and Countermeasure Plan. 2.37 SSQMP. Site Specific Quality Management Plan. 2.38 TOC. Total Organic Carbon. 2.39 TS. Total Solids. 2.40 Not Used 2.41 US DOT. United States Department of Transforation. 2.42 US EPA. United States Environmental Protection Agency.

1R-2

SECTION IS NOT USED

SECTION IT AIR MONITORING

INDEX

1• General 2. Monitoring Parameters 3. Work Environment Criteria

4. Ambient Environment Criteria 5. Monitoring Locations and

Frequency

6. Monitoring Procedures 7. QA/QC Requirements 8. Documentation and

Reporting 9. Submittals Attachment 1: Interim Standard Air Monitoring Guide

Attachment 2: Field Standard Operating Procedures for Air Surveillance, F.S.O.P #8, EPA

1. GENERAL

«r,n The re),ned al action at Celtor Chemical Works Site is intended to remove soil and tailing materials that are contaminated to levels above si?e! specific action levels from the site. The excavation and off-sitHLp remedy involves demolition and off-site disposal of concrete structJSes, excavation of all soil materials contaminated above the site-specific action

d • haulmg and disposal of these soils at an approved hazardous waste disposal facility. The excavation will be backfilled with imported clean soil, and drainage features will be installed.

The Contractor must develop a written Air Monitoring Plan which will be approved by the Contracting Officer prior to the commencement of work. This

M COf°m XthG £uidelines in this section, the Interim Standard Air Monitoring Guide for Hazardous Waste Sites, June 1984, U.S. Army Corps of Engineers, MRD (Attachment 1) and the Field Standard Procedures for Air Surveillance, F.S.O.P #8, EPA (Attachment 2). The Air Monitoring Plan shall include as a minimum:

o o o o o o o o

Air monitoring locations and frequencies, Air monitoring parameters, Criteria for work respiratory protection levels, Criteria for implementation of engineering controls, Detailed procedures for collection and analysis of air samples, Calibration procedures for monitoring instruments, Quality assurance/quality control procedures and audits, Documentation and reporting.

fn-r C°ntraCt0f'S Certified Industrial Hygienist shall be responsible for developing, implementing and overseeing the Air Monitoring Plan.

nrote ?onbSCtiVeSi°f thS Air Monitoring Plan must include the protection of on-site personnel, and minimization of exposure of neighboring populations during the work activities. Monitoring of air qualify in wo

1T-1

zones and other on-site areas, and at the site boundaries and if necessary, in off-site areas, shall be performed in order to satisfy these objectives. The Contractor's Certified Industrial Hygienist shall evaluate on-site monitoring results according to criteria appropriate for the work environment, and site boundary and off-site monitoring results according to criteria appropriate jfor the ambient environment, as described in the following paragraphs.

2. MONITORING PARAMETERS

The Air Monitoring Plan shall include sampling and analysis for the contaminants of concern identified in the soils to be excavated at the site. Contaminants are arsenic, cadmium, copper, lead and selenium. The program shall also include monitoring for levels of total and respirable particulates and hydrogen sulfide.

There have been intermittent "rotten eggs" odors reported at the site. EPA conducted extensive onsite air sampling over a 2-day period and nothing was detected during this period. The hydrogen sulfide odors may reappear during the remedial activities, so the Air, Monitoring Plan shall include monitoring for hydrogen sulfide.

3. WORK ENVIRONMENT CRITERIA

The Air Monitoring Plan shall include sufficient monitoring of air quality in work zones and other on-site areas to assess levels of employee exposure, determine that work zone designations are valid, and that the respiratory protective equipment being worn by personnel is adequate.

Respiratory equipment specified in Section 1J will not protect workers against hydrogen sulfide. If the NIOSH-TLV level (10 ppra) of hydrogen sulfide is exceeded, work shall cease, and the site shall be evacuated. The Contractor shall contact the COR immediately for instructions.

A variety of guidance is available for evaluating air quality with respect to worker health and safety. This guidance includes legal limits of exposure promulgated by the Federal government and recommended criteria for exposure developed by other agencies.

The Occupational Safety and Health Administration (OSHA) has established Permissible Exposure Limits (PEL) for air contaminants in the workplace. The PEL's are legal standards which must be met. In addition, the California Division of Occupational Safety and Health Administration (CAL/OSHA) has established action limits for arsenic (0.005 mg/m3) and lead (0.03 mg/m3) which also must be met. An employee's exposure to any material on a time-weighted-average basis over any 8-hour work shift of a 40-hour work week shall not exceed the PEL concentration.

The American Conference of Governmental Industrial Hygienists (ACGIH) has recommended criteria relating to the exposure of workers to air contaminants. The ACGIH criteria are in the form of Threshold Limit Values (TLV's). The ACGIH Time-Weighted-Average Threshold Limit Value (TLV-TWA) is

1T-2

\

defined as the time-weighted average for a normal 8-hour workday or 40-hour work week, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect.

The National Institute for Occupational Safety and Health (NIOSH), Recommended Threshold Limit Values are for 15 minute ceiling exposure.

The available CAL/OSHA action limits, OSHA PEL's, ACGIH TLV-TWA's and NIOSH-TLV's are shown on Table 1T-1. The most stringent criteria shall apply for each contaminant.

4. AMBIENT ENVIRONMENT CRITERIA

Hie Contractor's Air Monitoring Plan shall include sufficient monitoring at the site boundaries and, if necessary, in adjacent off-site areas to assess the impact of site operations on ambient air quality in off-site areas, to evaluate the effectiveness of dust control measures, and to indicate whether implementation of further measures are required to ensure that neighboring populations are not being adversely impacted by the site activities.

National Primary Ambient Air Quality Standards have been promulgated under the Clean Air Act for lead and for particulates. The Primary Ambient Air Quality Standards define levels of air quality which are judged to be necessary, with an adequate margin of safety, to protect the public health.

The Contractor's Air Monitoring Plan shall include continual air monitoring at the boundaries of the site and specify action levels for particulate and contaminant concentrations for implementing on-site engineering controls (i.e. dust control) based on the results of this monitoring. Criteria for enforcing dust control measures will be based on exceeding the Primary Ambient Air Quality Standards for lead and/or particulates, or exceeding PEL/42 values for arsenic, cadmium, copper and/or lead, if normal ambient conditions are found to be below these levels. Background air monitoring shall be performed at all three monitoring stations for a continuous 24-hour period prior to any site activities in order to determine normal ambient conditions. Samples will be analyzed for total and respirable particulates, arsenic, cadmium, copper, lead, zinc and selenium. If normal ambient conditions are determined to exceed these levels, the criteria for site controls shall be adjusted accordingly to prevent significant deterioration of I the normal ambient conditions. Work shall stop if any applicable criteria is exceeded.

Three ambient air monitoring stations with high volume ambient air samplers shall be provided. Samples shall be placed at the site boundaries upwind and downwind of the site operations and at a third location designated by the COR. Ambient air sampling shall be performed for continuous 23-hour periods. . Analysis and sampling frequency shall be as specified in paragraphs 5.1.4 and 5.2.2.

Real time monitoring for hydrogen sulfide shall be performed at the site boundaries. If monitoring results exceed 0.24 ppm, work shall cease

1T-3

imt.il corrective actions are implemented. The Contractor shall consult with the COR for appropriate corrective action to be taken.

5- MONITORING LOCATIONS AND FREQUENCY

Real-time air monitoring and collection of air samples shall be performed at representative locations at a frequency adequate to assess levels of employee exposure, and the impact of site operations on air quality in adjacent off-site areas. Selection of monitoring locations and frequency shall be made in accordance with the guidelines given in Attachments 1 and 2. A summary of the Air Monitoring Program meeting the minimum requirements of this specification is shown in Table 1T-2.

- n 5'.1 Air Sampling for Hazardous Constituents: At a minimum the lollowing sampling shall be performed.

5.1.1 Collection of air samples for laboratory testing for arsenic, cadmium, copper, lead and selenium from the breathing zone of equipment operators in the Exclusion Zone. Samples shall be collected in the breathing zone of workers engaged in activities where the highest potential for exposure exists. Personal samples, wherein the employee wears the sampling apparatus, are required. Several samples shall be collected at the start of excavation operations to confirm the appropriateness of the personnel protection equipment available on-site. (see Table 1T-3). Samples of the breathing zone of Exclusion Zone workers shall be collected not less than twice per week.

5.1.2 Collection of air samples for laboratory testing for arsenic, cadmium, copper, lead and selenium from the breathing zone of workers in the Contamination Reduction Zone. Personal or area sampling may be utilized. Several samples shall be collected at the start of excavation and decontamination operations and periodically thereafter to assess the required level of personnel protection in this zone. The frequency of sample collection in the Contamination Reduction Zone shall be not less than once a week. Air sampling of the Contamination Reduction Zone should be performed on days when this zone is downwind ox the excavation and truck loading operations.

5.1.3 Collection of air samples for laboratory testing for arsenic, cadmium, copper, lead and selenium from the breathing zone of workers m the Support Zone. Personal or area sampling may be performed. Air samples shall be collected mainly from outdoor support areas and occasionally for the indoor facilities, on days when the Support Zone is downwind of the excavation and truck loading operations. Sampling frequency shall be not less than every two weeks.

5.1.4 Collection of air samples for laboratory testing for arsenic, cadmium, copper, lead and selenium at the site boundaries. Samples shall be collected simultaneously at upwind and downwind locations near the site boundaries and at a third monitoring station designated by the COR. Sampling frequency at the site boundaries shall be based on

1T-4

review of the Exclusion Zone air quality results and shall be every four weeks as a minimum. Sampling shall last at least 24-hours.

The position of area air sampling equipment shall be located based on wind conditions and planned daily activities. The basis for the selection of the sample location and the sampling purpose shall be recorded in the field log. The sample location shall be noted on a site map and the approximate distance from site activities shall be recorded. Wind conditions shall be checked periodically throughout the day and significant changes in wind directions shall be noted. Upwind and downwind samples locations shall be moved if significant wind shifts occur. New locations shall be approved by the COR. If the sample location is moved, the new location shall be noted as well as the time of move. During periods of low winds speed and variable wind direction, the samples shall remain in a fixed location which is judged to be most representative.

5.2 Air Surveillance for Particulates:

5.2.1 Direct reading real-time monitors shall be used to survey concentrations of total airborne particulate matter during the remedial activities. Surveillance of airborne particulate concentrations shall be performed hourly at the Exclusion Zone during daylight hours and daily at the Contamination Reduction Zone, Support Zone and along the site boundaries. GCA MINIRAM's (Miniature Real-Time Aerosol Monitor) Model PDM-3 or equivalent equipment shall be used. —

5.2.2 Three high volume ambient air samplers shall be used daily to determine total and respirable particulate concentrations at the site boundaries. Sampling shall last 24-hours.

5.3 Air Surveillance for Hydrogen Sulfide

Real-time monitoring shall be used to survey concentrations of hydrogen sulfide during remedial activities. An hydrogen sulfide detector, NIOSH certified, shall be used. Surveillance shall be performed hourly at the Exclusion Zone during daylight hours and daily at the Contamination Reduction Zone, Support Zone and along the site boundaries.

5•4 Meterologic Conditions: The Contractor shall set up a meterological station to measure wind speed and direction, temperature and barometric pressure. The location of this station, equipment, and monitoring frequency shall be indicated in the Air Monitoring Plan.

6. MONITORING PROCEDURES

Detailed procedures shall be included in the Air Monitoring Plan for the collection of air samples and use of real-time monitoring equipment. Air quality sampling and monitoring procedures shall conform to state-of-the-art accepted practices. References for air monitoring methods are included in Attachment 1 and 2. Acceptable methods for collecting and analyzing air samples for various parameters are contained in the Manual of

1T-5

Analytical Methods, 3rd edition, February 1984, National Institute for Occupational Safety and Health (NIOSH), Volumes 1 and 2.

Work environment air samples shall be collected over as much of the work day as possible in order to adequately determine the 8-hour time-weighted average daily air concentration. Ambient environment air samples will be collected on a 24-hour basis. The air sample filter cassettes (or other sampling media) shall be stored in a dry, cool place until used. The filter cassettes shall be replaced and removed in and out of the sampling device in a manner which ensures proper connection and seating of all fittings. After sampling, the filter cassettes shall be sealed and shipped to the laboratory the same day as collected.

7- QUALITY ASSURANCE/QUALITY CONTROL

The Contractor shall implement appropriate control to ensure the representativeness and effectiveness of the air monitoring program, and the accuracy of the air monitoring results. For real-time monitoring equipment, written procedures and requirements for equipment maintenance and calibration shall be developed and adhered to as part of the Air Monitoring Plan. Air samples shall be collected in accordance with written procedures specified in the Air Monitoring Plan. These shall include detailed procedures for pump calibrations, sample setup, and proper labeling, preservation, packaging' and shipping of samples. A degree of drift in the air flow rate during the sampling intervals is expected. The pre and post flow rates from the calibrations shall be recorded for each sample period and reported with the laboratory results. Concentrations for the"period shall be calculated using the average of the two flow rates. If flow rates are found to change by more than 25 percent, data shall be identified as suspect due to possible significant instability of flow rate through the sample medium. If during the sampling period a pump stops, the sample shall be invalidated.

Field blank and duplicate samples shall be collected as part of the QA/QC program. At least one , field blank shall be submitted to the laboratory for every ten samples tested for each parameter. Field blanks shall be handled on-site and prepared for shipment to the laboratory in the same manner as exposed samples. At least one field duplicate shall be obtained and tested for every ten samples collected.

The laboratory performing the air quality analysis shall be accredited by the American Industrial Hygiene Association; (AIHA) and/or successfully participate in the NIOSH Proficiency Analytical Testing (PAT) program for lead and cadmium. Laboratory NIOSH procedures including analyses of laboratory blanks and equipment calibration and checks shall be described along with the sample results. Any problems which may have affected the accuracy of the data shall be noted. Detection limits shall be appropriate for the exposure level standards and criteria for each parameter.

The Air Monitoring Plan shall' be supervised by the Contractor's Industrial Hygiene Technician/Safety and Health Specialist, at the direction of the Contractor's Certified Industrial Hygienist. The Industrial Hygiene

1T-6

Technician or Safety and Health Specialist shall be responsible for the implementation of the Air Monitoring Program in accordance with the plan. He/she shall operate air monitoring equipment, collect air samples or supervise the performance of these activities by other personnel, and keep the complete and accurate documentation of the Air Monitoring Program.

The Industrial Hygiene Technician or Safety and Health Specialist shall coordinate with the analytical laboratory to expedite fast turn-around (within 2 days) of air sample analyses. He/she shall remain in contact with the Certified Industrial Hygienist for exchange of information regarding air sample test results. The Industrial Hygiene Technician or Safety and Health Specialist shall review real-time monitoring results on-site as received. He/she shall inform the Certified Industrial Hygienist immediately if unanticipated on-site conditions should occur.

The Industrial Hygiene Technician or Safety and Health Specialist shall continuously assess the adequacy of the personnel protective equipment being worn in the work zones and direct the implementation of engineering controls as required, based on the monitoring results.

8. DOCUMENTATION AND REPORTING

8.1 Collection of Air Samples

8.1.1 Chain of custody records shall ' be maintained for each sample. A complete chronological history shall be developed and recorded for each sample from the time identification numbers are assigned through shipment to the laboratory and final analysis work. The chain of custody records shall document:

o Sample Identification Number, o Sample Location or Wearer, o Date and Time, o Sample Typ>e, and o Signatures of personnel who have handled the sample.

8.1.2 A Calibration Record Form shall be filled out for each sample. The Calibration Record ; Form shall contain the following information: .

o Air Pump Brand, Model and Identification Number, o Date and Time of Calibration, o Targeted Calibration Point, o Pre-and Post-Sample Calibration Results, and o Signature of Calibrator. i . *

8.1.3 A Sample Data Collection Sheet shall be kept for each sample. The Sample Collection Sheet shall contain at a minimum the following items:

o Sample Identification Number, o Sample Location or Wearer (and wearer's activities),

IT-7

o Air Pump Identification Number, : , : o Pre-and Post-Sample Calibration Results,; o Type of Sample, i o Sample Date, Start and Finish Times, • o Calculated Total Air Volume Sampled, o Temperature, Barometric Pressure, Relative Humidity, o Wind Conditions During Sampling Interval, and o Sampling Personnel. !

8.2 Air Surveillance Field Log: A field log shall be maintained documenting all air surveillance performed at the site. The field log shall contain at a minimum the following items:

o Instrument Brand, Model and Identification Number, o Dates and Times of Surveillance, o Location of Surveillance, o Site Activities Being Performed, o Equipment in Use, o Engineering/Administrative Controls in Effect, o Personnel Protective Equipment in Use, o Wind (speed and direction), ' o Weather (temperature, pressure, humidity), o Related Observations, o Equipment Operator or Recorder, o Background Readings and Results, o Instrument Maintenance Records, and o Instrument Calibration Records

8.3 Air Quality Data Reporting: All air monitoring results shall be transmitted to the Contracting Officer in a timely fashion, not to exceed two (2) working days following completion of any specific monitoring. The Contractor shall verbally notify the COR immediately of: 1) any air monitoring problems 2) results indicating that significant modifications to site protocols are required, 3) results indicating excessive exposure to employees, and 4) results indicating excessive contaminant concentrations may have occurred in off-site areas, i

The air monitoring results shall be reported on specific forms developed by the Contractor for this purpose. These forms shall contain the documentation required in the Air Surveillance Field Log the Sample Data Collection Sheets and Calibration Record Forms. The Air Monitoring Forms shall be attached to the Construction Quality Control Daily Report.

9. SUBMITTALS

The Contractor shall submit the Air Monitoring Plan for approval.

1T-8

TABLE 1T-1 APPLICABLE AIR QUALITY STANDARDS AND CRITERIA (MG/M 3) Work Environment Ambient Environment

CAL-OSHA(1)

Contaminant AL

Arsenic 0.005

Cadmium

Copper

Lead

Selenium

Hydrogen Sulfide

Total Particulates

Respirable Particulates

0.03

OSHA(2)

PEL

0.01

0.20

1

0.05

0.2

20 ppm (ceiling)

15

ACGIH(3)

TLV-TWA

0.2

0.05

1

0.15

10 ppm

10

NIOSH(4)

TLV

0.002

0.20

<0 .1

10 ppm

NPAAQS(5)

0.0015

PEL/42 (6)

0.0002

0.005

0.02

0.001

0.24

0.075(a) 0.260(b)

0.060(a) 0.150(b)

Notes:

9flifornia/OSHA, Title 8 California Administrative Code, Sections 5214 and 5216, Action Levels (8-hour time-weighted average)

(2) Occupational Safety and Health Administration, 29 CFR 1910 General Industry Standards, Permissible Exposure Limit (8-hour time weighted average).

(3) American Conference of Governmental Industrial Hygienists, Threshold Limit Values for Chemical Substances and Physical Agents in the Work Environment and Biological Exposure Indices with Intended Changes for 1986-1987.

Recommended Threshold Limit Value - Time Weight Average (8-hour).

4) National Institute for Occupational Safety and Health,Recommended Threshold Limit Value <15 minute ceiling for As; lowest feasible limit for Cd; 10-hour TWA for Pb) 1.0 min ceiling for H2S).

5) S fte! E"vir0nmental Protection Agency, 40 CFR 50, National Primary Ambient Air Quality Standards, and Proposed Standards, Respirable Particulates.

(a) annual geometric mean (b) maximum 24-hour concentration not to be exceeded more than once per year

6) Air Quality Management Districts use PEL/42 as one of the factors under consideration when granting a permit. These values should not be exceeded.

TABLE 1T-2 AIR MONITORING PRO®AM - SUMMARY

Contaminant

As, Cd, Cu, Pb, Se

Sampling Procedure

Personal Monitoring Sampler, NIOSH certified

Analysis Method (1)

NIOSH 7300

Minimum Sampling Frequency & Duration

Twice a Week 8-hours

Sampling Location

EZ

Total Particulates

Respirable Particulates

Hydrogen Sulfide

Note:

Personal Monitoring Sampler or Portable Air Sampler, NIOSH cert.

High Volume Ambient Air Sampler, meeting 40 CFR part 50 app.B ( 2 )

Real-Time Monitor GCA MINIRAM PEW-3 or equal, NIOSH cert.

High Volume Ambient Air Sampler meeting 40 CFR part 50 app.B (2) High Volume Air Sampler meeting 40 CFR part 50 app. B (2)

Portable Hydrogen Sulfide Detector NIOSH cert.

NIOSH 7300

NIOSH 7300

N/A

NIOSH 500

NIOSH 500

N/A

Once a Week 8-hours Every 2 weeks 8-hours

Every 4 weeks 24-hours 3 locations

CRZ

SZ

SB

Hourly-Daylight Hours EZ Daily " Daily " Daily "

Daily (24-hours) 3 locations

Daily (24-hours) 3 locations

CRZ SZ SB

SB

SB

(1) Manual of Analytical Methods, 3rd edition, February 1984, Occupational Safety and Health (NIOSH), Volumes 1 and 2.

(2) United States Environmental Protection Agency. "Appendix Determination of Suspended Particulates in the Atmosphere 40 CFR Part 50. November 25, 1971.

(3) EZ: Exclusion Zone CRZ: Contamination Reduction Zone SZ: Support Zone SB: Site Boundaries

Hourly-Daylight Hours EZ Daily " " CRZ

SZ " SB

National Institute for

B—Reference Method for (High Volume Method)".

TABLE 1T-3 ESTIMATED NUMBER OF ANALYSIS

Contamination(1)

Initial Sampling

Backround Sampling

Rem. Activities Sampling

As, Cd, Cu, Pb, Se(2)

8 - EZ 4 - CRZ 2 - SZ 3 - SB

3 - SB

26 - EZ 13 - CRZ 7 - SZ 10 - SB

8 8

28

Total Particulates

3 - SB

3 - SB

273 - SB

120

28 28

NA

335

Respirable Particulates

3 - SB

3 - SB

273 - SB

28 28

N/A

335

Sampling Blanks (10%) Duplicates (10%)

Analysis Blanks (2) (1/shipment)

Total No. of Analysis

Notes:

(1) In addition to laboratory samples, total particulates and hydrogen sulfide will be monitored by using a real time monitor. For monitoring frequency refer to Table 1T-2.

(2) Trace metal analyses will be accomplished by extracting all or part of the filter and analyzing the extract. Blank filters from each lot will be submitted to determine backround concentrations in sampling media.

(3) EZ: Exclusion Zone CRZ: Contamination Reduction Zone SZ: Support Zone SB: Site Boundaries

(4) Based on 13 weeks scheduled duration of contaminated soil removal activities.

(5) N/A: Not Applicable

SECTION 1U SUBMITTALS

INDEX

3. List of Submittals 1. General 2. Related Requirements

1. RELATED REQUIREMENTS i

The Contractor shall provide the submittals identified herein for approval by the Contracting Officer. In addition, the Contractor shal provide the submittals identified herein to EPA and the Department of Health

Services, State of California. .-V •

2. RELATED REQUIREMENTS ! .

Section 1A - Special Clauses Section 1C - Environmental Protection Section ID - Summary of Work Section 1G - Progress Meetings and Reports Section 1H - Project Schedules Section 1J - Safety, Health and Emergency Response Requirements Section IK - Chemical Data Quality Management Section 1L - Project Photographs Section 1M - Spill Control Section 10 - Security . Section 1Q — Project Record Documents

, Section IT - Air Monitoring Section 2B - Survey Data Section 2E - Sampling and Analyses Section 2F - Off-Site Transportation Section 2G - Off-Site Disposal

3. LIST OF SUBMITTALS

3.1 Contractor Quality Control Plan (includes Chemical Quality Control

Plan) (Section IK). . 3.2 Quality Control Daily Report (includes chemical analytical

results) (Section 1A and IK).

3.3 Test Reports (Section 2M),' and SPK Form 437 - Materials Test Summary published by U.S. Army Engineer District - Sacramento, CA.

3.4 Contractor Certified Shop Drawing, Material Lists, Catalog Cuts,

and Equipment Lists (Section 1A). 3.5 As-Built Drawings (Section 1A and 2B). 3.6 Environmental Protection Plan (Section 1C). 3.7 Shut Down Plan (Section ID). 3.8 Initial Project Schedules (Section 1H). 3.9 Revised Weekly Progress Schedules (Section 1H). 3.10 Safety Health and Emergency Response Plan (Section 1J).

1U-1

3.11 Qualifications of' Industrial Hygienist, Industrial Hygiene

Technician, and Safety and Health Specialist (Section 1 )-

3.12 Certification Letter for California. Licensed Physician (Secti

3.13 Medical Certification for Contractor Employees (Section 1J).

3.14 Time Loss Illness (Section 1J). 3.15 Personnel Training Program (Section 1J) 3.16 Layout Drawing for Change, Shower, Lunch and Break Facilities

(Section 1J). 3.17 Weekly Reports (Section 1J). 3.18 Phase Out Report (Section 1J). . 3.19 Reports of Significant QC or Analytical Problems (Section IK). 3.20 Final Summary Chemical QC Report (Section IK). 3.21 Comprehensive Spill and Discharge Control Plan (Section 1M). 3.22 Spill Report (Section 1M) :

3.23 List of Accredited Persons (Section 10). 3.24 Site Security Protocols (Section 10).; 3.25 Project Record Documents and Transmittal Letter (Section w)• 3.26 Materials Handling Plan (Sections ID and 2G). 3.27 Revised Material Handling Plan (Section 2G) 3.28 Surveyor's Field Notes (Section 2B). 3.29 Calibration Certificate (Section 2B). 3.30 Pre-Cover Topographic Survey (Section 2B). 3.31 List of Disposal Sites (Section 2G) 3.32 Manifest Documents (Section 2G). 3.33 Project Photographs (Section II). , , 3.34 Survey Plan (Section 1A) 3.35 Drainage Plan (Sheet 7) 3.36 Temporary Utility Plan (Section 1L and IP) 3.37 Air Monitoring Plan (Section IT) 3.38 Air Quality Data Reports (Section IT)

1U-2

SECTION 2A

SITE PREPARATION

INDEX

1.: General Contractor Requirements

2. Related Requirements

3. Materials and Equipment

4. Site Construction

5. Access Road

6. Con'lamination Reduction Zone

1. GENERAL CON'l'RACTOR REQUIREMENTS

1.1 The Contractor shall protect and maintain or replace survey and grid stakes, fences, and roads against damage from equipment and vehicular

traffic.

1.2 The Contractor shall protect utility lines or appurtenances that are to be retained. It is the Contractor's responsibility to locate any existing utilities on site. Any damage to utilities shall be repaired by the Contractor at his expense.

1.3 Any on-site staging and storage areas that are necessary during site work activities shall be designated by the Contractor in his Materials Handling Plan, and approved by the Contracting Officer jjrior to the Notice to Proceed.

2A-1

2 . RELATED REQUIREMENTS

Section 1J: Section IK: Section 1L: Section IN: Section 10 Section IP: Section IT': Section 2C: Section 2E: Section 2J: Section 2K: Section 2M: Section 2N:

3. MATERIALS AND EQUIPMENT

3.1 Materials and equipment may be new or used but shall be adequate in capacity for the required usage, must not create unsafe conditions, and shall meet requirements of applicable codes and standards and the: approval of the Contracting Officer.

4. SITE CONSTRUCTION

4.1 The Contractor shall plan and construct any erosion control measure as required for completion of the site work or as specified by the Contracting Officer.

4.2 The Contractor shall perform contaminated soil and concrete removal activities at the site as required for the designated site areas, and as specified in Section 2C, "Contaminated Soil Removal," and Section 2N "Sampling demolition and removal of concrete structures."

4.3 Clearing and Grubbing Outside Exclusion Zone.

4.3.1 Clearing shall consist of the felling, trimming, and cutting of trees into sections, and the satisfactory disposal of the trees and other vegetation designated for removal, including down timber, snags, brush, and rubbish occurring within the areas to be cleared. Trees, stumps, roots, brush and other vegetation in areas to be cleared shall be cut off flush with or below the original ground surface, except such trees and vegetation as may be indicated or directed to be left standing. Trees designated to be left standing within the cleared areas shall be trimmed of all branches to such heights and in such a manner as are indicated or directed. Limbs and branches to be trimmed shall be neatly cut close to the bole of the tree or main branches. Cuts more than 1-1/2 inches in diameter thus made shall be painted with an approved tree-wound paint. Trees and vegetation to be left standing shall be protected from damage incident to clearing, grubbing, and construction operations by the

Safety, Health and Emergency Response Requirements Chemical Data Quality Management Temporary Utilities and Controls Dust Control Security Field Offices and Sheds Air Monitoring Contaminated Soil Removal Sampling and Analysis Chain Link Security Fence Site Maintenance Concrete Sampling, Demolition and Removal of Concrete Structures

2 A-2

erection of barriers or by such other means as the circumstances required. Clearing shall also include the removal and disposal of structures that obtrude, encroach upon, or otherwise obstruct the work.

4.3.2. Grubbing shall consist of the removal and disposal of stumps, roots larger than 3 inches in diameter, and matted roots from the designated grubbing areas. This material, together with logs arid other organic or metallic debris shall be excavated and removed to a depth of not less than 12 inches below the original surface. Depressions made by grubbing shall be filled with suitable material and compacted to make the surface conform with the original adjacent surface of the ground. j

i

4.3.3. Tree Removal: Where indicated or directed, trees and stumps that are designated as trees! shall be removed from areas outside those areas designated for jclearing and grubbing. This work shall include the felling of such trees and the removal of their stumps and roots as specified hereinbefore in paragraph GRUBBING. Trees shall be disposed of as specified! hereinafter in paragraph DISPOSAL, OF CLEARED AND GRUBBED MATERIALS.

4.3.4 Disposal of Cleared and Grubbed Materials:

4.3.4.1 Salable Timber: j All felled timber from which saw logs, pulpwood, posts, ties, mine props, or cordwood can be producted. shall be considered as salable timber, and shall be trimmed of limbs and tops, sawed into salable lengths of 2 feet, and stockpiled by the Contractor at locations as directed. The disposal of the stockpiled timber will not form a part of the contract.

i 4.3.4.2 Burning or Removing jFrom Site: With the exception of such timber as may be ordered salvaged as provided for above, all logs, stumps, roots, brush, rotten wood, and other refuse from the clearing and grubbing operations shall be disposed of at Class III landfill.

| 4.3.4.3 All the topsoil collected during grubbing and meeting the requirements of Section 2H shall be stockpiled in the area designated by the COR and used to reestablish the preconstruction conditions.

i

5. ACCESS ROADS. |

5.1 Temporary Fishing Access Road: The Contractor shall provide a new temporary fishing access road as shown on the drawings. Construction of the temporary fishing access road shall be the first item of work after mobilization. A continuous fence shall be constructed on the west side of the road that ties in to the existing pasture boundary fence.

5.2 Contractor's Temporary Access Roads and/or Turn-Around Areas. The Contractor shall provide temporary access roads and/or turn-around

2 A-3

areas as

required for his equipment. Temporary on-site access roads and/or turn­around areas shall be adequately graded, compacted and prepared for the specified working areas, and to accommodate the equipment to be used on the roads or turn-around areas. Where required by the Contractor, coarse aggregate may be used to improve temporary access roads. ,

5.3 Maintenance. The Contractor shall maintain all access and temporary roads and turn-around areas , to provide positive drainage, dust control, mud control, and vehicle access. Any damage (e.g., washouts, excessive rutting) shall be promptly repaired by the Contractor.

6. CONTAMINATION REDUCTION ZONE.

6.1 General. The Contamination Reduction Zone is designated for personnel and vehicle decontamination facilities. The specifications for the personnel decontamination facility are presented in Section 1J - Safety, Health and Emergency Response Requirements, and Section IP - Field Offices and Sheds.

6.2 Contaminated soil from that part of Area A that lies in the Contamination Reduction Zone shall be excavated first and temporarily stock­piled in the other areas of the Exclusion Zone. The Contamination Reduction Zone shall be backfilled only after all contaminated materials have been removed from the Exclusion Zone.

6.3 The vehicle rinse decontamination facility shall consist of a concrete slab with curb and a gentle slope toward a concrete-lined sump. A water wash or steam cleaning system shall be included. The rinsate shall be removed from the sump with a water level-actuated pump and placed in approved tanks and stored in the Contamination Reduction Zone as described in Section 2D until treated, tested and disposed of as dust control water or as required in Section 2G. Water washing of equipment shall be sufficient for fulfilling cleaning requirements.

6.4 The personnel and vehicle decontamination facilities shall be removed as part of the site closure work. During that process Contractor will not cross contaminate the site and will be responsible for all testing and removal of contaminated material from CRZ at no increase in cost to Government.

2A-4

SECTION 2B

SURVEY DATA

INDEX

1. General Contractor Requirements

2. Related Requirements

3. Surveying

4. Contractor Measurements

1. GENERAL CONTRACTOR REQUIREMENTS

1.1 The Contractor shall establish and maintain survey monuments, benchmarks and other control points as required to define property and area boundaries and soil sample locations, and determine depth of excavation and elevations for final grade.

1.2 The survey monuments and grid established for the project shall be tied to the California State Coordinate System. Coordinates for area boundary corners are shown on Drawings 3 through 6.

2. RELATED REQUIREMENTS

Section 1A Section 1Q Section 2A Section 2C Section 2H

3. SURVEYING

Special Clauses Project Record Documents Site Preparation Contaminated Soil Removal Backfill and Final Grading

3.1 Contractor shall provide all measurements, reference marks, lines, and grades necessary to maintain and, if necessary, re-establish the existing grid system.

3.2 References shall be set and measurements taken using standard accepted surveying methods and equipment.

3.3 The survey party Chief shall be a California Licensed Surveyor. All surveying field notes shall be turned over to the Contracting Officer and added to the project record documents.

2B-1

3.4 Surveying instruments shall be calibrated prior to the start of the work. The Contractor shall submit certificates attesting this calibration to the Contracting Officer prior to performing survey.

4. CONTRACTOR MEASUREMENTS

4.1 Prior to any excavation of contaminated material from each Area of the Exclusion Zone, the Contractor, shall prepare a second order topographic map - Scale 1" = 20 feet with a contour interval of 0.5 feet - of that Area of the Exclusion Zone. The map shall be prepared after clearing is completed. This map shall be the reference for determining that the required depth of excavation shown on Drawing 3 through 6 has been achieved.

4.2 The Contractor shall make all measurements and check all dimen­sions necessary for the proper execution of the work called for by the drawings and specifications.

4.3 Where the dimensions and locations of existing structures, wells or utilities are of critical importance to the work, the Contractor shall verify such dimensions and locations in the field before the construction that is dependent on the correctness of such information.

4.4 After completion of excavation to the depth shown on drawings, Contractor shall complete a topographic survey of the site.

4.5 Contractor shall complete another topographic survey after comple­tion of all excavation and prior to finish grading and placement of the ground cover system and prepare a topographic map with 1-foot contours.

4.6 The Contractor shall use the results of these surveys to calculate the quantity of soil removed from the site below the dejjth shown on drawings.

4.7 A record survey shall be conducted to permanently locate construction activities which have occurred at the site relative to the benchmark and property corners. As a minimum, all fence corners and property lines shall be located and referenced.

4.8 Information obtained in Item 4.7 above shall be drawn on a UCCE standard-size mylar (1 inch equals 20 feet) and shall be included in the Project Record Documents.

2B-2

SECTION 2C

CONTAMINATED SOIL REMOVAL

INDEX

1. General Contractor Requirements 2. Related Requirements 3. Existing Conditions 4. Construction Activities

1. GENERAL CONTRACTOR REQUIREMENTS

1.1 The Contractor shall prepare as ! part of the Materials Handling Plan, a program for the removal of contaminated soils.

1.2 The Materials Handling Plan shall present in detail the equipment, sequence, procedures, plans, and areas to be utilized by the Contractor for materials handling, staging/storage, and off-site disposal activities for designated contaminated soils.

1.3 Prior to initiating contaminated soil excavation, the area shall be cleared of debris and miscellaneous metallic materials as described in paragraph 4.3 below. j.

i

2. RET-ATET) REQUIREMENTS j

Summary of Work ' Safety, Health and Emergency Response Requirements Air Monitoring Site Preparation I-Off-Site Transportation jj

Off-Site Disposal j!

Sampling, Demolition and Removal of Concrete

3. EXISTING CONDITIONS '

3.1 A description of soils at the site and in the vicinity of the site may be found in Chapter 3 and Appendix A of the Remedial Investi­gation Report, Celtor Chemical Works Site, Hoopa, California WA 121.9L280, W69628.00 April 1985, by CH2M Hill under contract No. 68-01-6692 for the United States Environmental Protection Agency.

4. CONSTRUCTION ACTIVITIES j

4.1 The Contractor shall remove and dispose of all contaminated soil as described in paragraphs 4.4, 4.5 and 4.6 below.

4.2 Once the contaminated soils have been excavated and removed, the area shall be filled, graded and prepared for cover as specified and shown on Sheets 8,9,10, and 11.

:i j;

2C-1 !

Section ID: Section 1J: Section IT: Section 2A: Section 2F: Section 2G: Section 2N:

4.3 The Contractor shall designate temporary staging/storage areas that he may require for the excavated material as part of the Materials Handling Plan. The design and location of these areas must be approved by the Contracting Officer and must be incorporated into the erosion and runoff control measures.

4.4 Clearing Inside Exclusion Zone

4.4.1 The Contractor shall cut down trees and vegetation within the Exclusion Zone as required and dispose of same at an off-site hazardous waste disposal facility.

4.4.2 Removal of stumps, roots, embedded cobbles and boulders and miscellaneous metallic materials shall be a part of excavation. Stumps, roots, embedded cobbles and boulders shall be disposed of at an off-site hazardous waste disposal facility.

4.4.3 On-site burning of debris is not permitted.

4.4.4 Cleared and excavated material for that portion of Area A that is required for the Contamination Reduction Zone shall be stockpiled in the Exclusion Zone until all decontamination facilities are constructed and operational.

4.5 Contaminated Soil Excavation

4.5.1 The Contractor shall provide equipment and personnel to excavate, handle and dispose of contaminated soil by methods to prevent contamination of the non-contaminated surrounding environment (soil, water, air, etc.).

4.5.2 The Contractor shall perform work in accordance with federal, state and local laws and requirements.

4.5.3 The Contract shall remove the final layer of soil above the depths indicated on Sheets 3, 4, 5 and 6 with clean excavation equipment. Equipment used for this excavation shall be cleaned at least two times each work day.

4.5.4 Following excavation of contaminated soils to the depth indicated in Sheets 3, 4, 5, and 6, samples of the remaining soil shall be taken to verify the completeness of contaminated soil removal to the following site specific action levels:

2C-2

Contaminant Total (a) Concentration Soluble (a) Concentration (mg/kg) (mg/1)

Arsenic 100 5 Copper 2,500 25 Cadmium - 25 1 Zinc 5,000 250 Lead 500 5 Mercury 20 0.2 Selenium 100 1 Sulfide Ion (b) (b) Cyanide Ion 200 2

(a) Analysis for Total Concentration shall be by EPA SW-846 and Analysis for Soluble Concentration shall be in accordance with the State of California, California Administrative Code, Title 22, Division 4.

(b) Analysis required, but action levels are not specified. (For information only)

4.5.5 If results of analyses at any points are above site specific action levels, an additional 6" depth of soil over a rectangular or square area extending one-half the distance from the sample point to the grid lines surrounding the point shall be excavated. Excavation shall be performed with clean equipment as described in 4.5.3.

At the base of these subsequent excavations, Contractor shall sample at 6 inch increments to a depth of 2 feet as described in Section 2E. Following laboratory analyses, Contractor shall excavate additional material in the same pattern as described previously in this paragraph to the depth of the highest sample showing all constituents below site specific action levels. If all samples to the depth of 2 feet at any location show soil contaminated to unacceptable levels, the Contractor shall excavate the full twp feet in that area, resample in 6 inch increments to an additional 2 feet Bind analyze those samples. Following laboratory Emalyses, Contractor shall excavate additional material in the same pattern as described previously in this paragraph to the depth of the highest sample showing all constituents below site specific action levels. If the full two feet must be excavated, Contractor shall continue the cycle of excavate, sample, test and excavate until the uppermost exposed soil surface at each location tests below site specific action levels.

4.5.5 Rocks, roots or other subsurface debris encountered during excavation shall be considered contaminated and disposed of at an off-site hazardous waiste disposal feicility.

2C-3

4.5.6 Excavation adjacent to fences shall require a 1-foot minimum zone be left intact so that the structural integrity will not be disturbed.

4.5.7 Surface and groundwater shall be handled as described in Section 2D and as shown on Drawings.

4.5.8 Excavations deeper than 5 feet shall be done in a safe manner in accordance with federal, state and local laws. Excava­tion support systems may include sheeting and bracing or cutting back the side slopes to the natural angle of repose of the soil. Soil sloughing into the bottom of the excavation shall be considered contaminated and disposed of at an off-site hazardous waste disposal facility.

4.6 Soil Disposal Requirements

4.6.1 Contaminated soil shall be disposed of at an off-site hazardous waste disposal facility as specified in Section 2G.

4.6.2 Soil sampling shall be performed as specified in Section 2E.

4.6.3 On-property backfilling shall be performed as specified in Section 2H.

2C-4

SECTION 2D

CONTAMINATED LIQUIDS COLLECTION AND DISPOSAL

INDEX

1. General Contractor Requirements 2. Related Requirements 3. Ground and Surface Waters Collected

in Active Excavations 4. Vehicle Decontamination Water 5. Personnel Decontamination Water 6. On-Site Waste Water Storage and Handling

1. GENERAL CONTRACTOR REQUIREMENTS

1.1 Water due to precipitation, seeps, springs shall be taken under control and routed out of or around the Exclusion Zone into the temporary drainage system.

Water from vehicle, personnel and equipment decontamination activities shall be collected and treated onsite. Treated water may require offsite disposal or may be used for dust control onsite depending upon the results of laboratory testing. Use of treated water for onsite dust control is discussed in Section IN.

1.2 The Contractor shall install chemical toilets and dispose of contents in accordance with State and local requirements.

1.3 The Contractor shall prepare, as part of the Materials Handling Plan for collection, storage, handling and disposition of all collected and potentially contaminated liquids. This plan shall include a listing of the types and capacity of storage tanks to be used.

1.4 The Contractor shall be responsible for the sampling, analysis, and characterization of all potentially contaminated liquids in order to meet regulatory requirements and requirements of these specifications for their proper handling, storage and disposal. The Contracting Officer may require split samples as a means of quality control.

1.5 Full responsibility for the care of surface water shall be borne by the Contractor until completion of work under this contract. The Contractor shall provide the materials and equipment and perform all work necessary, including investigations and determination of conditions, both existing and anticipated, to facilitate control of surface water and to protect the work from damage by water. The Contractor shall be responsible for preventing surface water from running onto the Exclusion Zone and contaminated liquid from running

2D-1

off site. Plans for control of surface water are subject to approval by the Contracting Officer prior to construction.

2. RELATED REQUIREMENTS

Section ID: Summary of Work Section 2E Sampling and Analysis Section 2F: Off-Site Transportation Section 2G: Off-Site Disposal

3- GROUND AND SURFACE WATERS COLLECTED IN ACTIVE EXCAVATIONS

3•1 Surface Water. Precipitation and surface runoff which collects within the Exclusion Zone, particularly in active excavation area, may pond and adversely impact continued effective excavation. In the event that ponding occurs which results in suspension of effective excavation, this water shall be pumped out to a storage tank for testing. A sufficient quantity of water must be pumped out to allow excavation to resume. A drainage system will be constructed as shown on Sheet 7 of the Drawings.

3•3 Ground Water. There are several springs in the vicinity of the concrete structures, the upper gully and the access road. Sampling during the remedial investigation showed that ground water beneath, and in the vicinity of the site is not contaminated. Sampling requirements of the groundwater from the three existing wells are specified in Section 2E. Well G-l shall be destroyed after all excavation is complete and after sampling and analyzing the results and the approval by the Contracting Officer. The method of destroying the well is shora on Sheet 7.

4. VEHICLE DECONTAMINATION WATER

The vehicle and equipment decontamination pad shall be provided with a sump. Water collected in the sump shall be pumped to a contami­nated water storage tank, and subsequently to a water treatment plant and a treated water storage tank. Sampling and testing of the treated water shall determine its disposal. Sediments collected in the sump shall be removed daily and disposed of together with the contaminated soils.

5. PERSONNEL DECONTAMINATION WATER

The shower, wash and laundry waters, (if any laundry is done on-site) shall be collected in a second contaminated water storage tank adjacent to the trailer facility. Handling, storage, treatment and disposal shall follow the same procedures described in paragraph 6 below.

2D-2

6. ON-SITE WASTE WATER STORAGE AND HANDLING

6.1 Water Treatment Plant. The contractor shall provide treat­ment and storage facilities for the ponded water described in 3 above, and the decontamination water described in 4 and 5 above. The treatment plant shall be designed to meet the site specific action levels for water:

Arsenic 50 ug/1 Cadmium 10 ug/1 Copper 1000 ug/1 Lead 50 ug/1 Zinc 5000 ug/1

Minimum plant design flow shall be 5 gpm. The storage facilities shall consist, as a minimum, of two contaminated water storage tanks and two treated water storage tanks, each with a minimum capacity of 6500 gal. The contaminated water storage tanks shall meet secondary containment requirements. Additional storage requirements shall apply for ponded water as specified in paragraph 3.1 above.

6.2 The Contractor shall provide and maintain on-site tankage for the temporary storage of water as described in this Section.

6.3 All wastewater collection/storage tanks shall be clearly labeled as to their contents. Written logs of water levels in each collection/storage tank shall be maintained by the Contractor in order to minimize the potential for overfilling.

6.4 Prior to disposition of any collected water from a storage tank, a representative sample shall be collected and analyzed by the Contractor. The results of the analysis shall be delivered to the Contracting Officer.

6.5 The Contracting Officer must approve in advance any shipments of water for off-site treatment or disposal.

6.6 All transfer of liquids to the storage tanks and between storage tanks and tank trucks shall be performed by the Contractor to minimize spillage. The Contractor shall be responsible for collecting and propierly disposing of any contaminated liquids which may be spilled and any soils which may become contaminated "Thorn spillage at no cost to the Government.

6.7 Written records of liquid quantities which are transported off-site shall be kept by the Contractor with copies submitted to the COR. The Contractor is also required to manifest these materials.

6.8 The Contractor is responsible for the decontamination of staging/storage tanks to alleviate the possibility of cross-contamina­tion of clean liquids placed in the tank. Decontamination sediments

2D-3

shall be considered as contaminated and transported for disposal at an off-site hazardous waste disposal facility.

6.9 The Contractor is responsible for placarding all liquid shipments in accordance with applicable rules and regulations of the U.S. Department of Transportation (DOT).

6.10 Only water meeting site-specific action levels may be used for dust control purposes. The Contractor is responsible for obtaining necessary permits to discharge treated water which does not meet site-specific action levels into a city sewer system from the local and city officials. If the treated water does not meet local discharge requirements, it shall be transported to an off-site hazardous waste disposal facility.

2D-4

SECTION 2E

SAMPLING AND ANALYSIS

INDEX

1. General Requirements 2. Related Specifications 3. Sampling Requirements | 4. Sampling Procedures 5. Analyses

1. GENERAL REQUIREMENTS

1.1 The Contractor shall perform soil sampling and analysis in excavated areas in order to verify that the contaminated soils and other materials have been removed to the required levels. Concrete, groundwater, contaminated liquids and air sampling and analysis are also required.

1.2 Groundwater from the three existing wells shall be tested before the beginning of excavation. After the approval of the results of testing by Contracting Officer, the Contractor shall seal well G-l as shown on the Sheet 7 of the Plans. Groundwater from two other wells shall be sampled and tested again after the completion of excavation.

1.3 Laboratory services shall be provided by a laboratory certified by the State of California selected by the Contractor and approved by the Contracting Officer.

1.4 The Contractor shall submit a detailed sampling and analysis protocol as part of the Laboratory Protocol for approval by the Contracting Officer.

1.5 Sampling and analysis of the excavated soils, other than required in paragraphs 3 and 4 in order to quantify contamination level and meet requirements of the disposal facility, shall be done at the Contractor's option at no additional cost to the Government.

1.6 Air sampling and analysis is described in Section lT-Air Monitoring.

2. RELATED SPECIFICATIONS

Section 1J: Section IK: Section IT: Section 2C: Section 2D: Section 2G:

Safety, Health and Emergency Response Requirements Chemical Data Quality Management Air Monitoring Contaminated Soil Removal Contaminated Liquids Collection and Disposal Off-Site Disposal

2E-1

3. SAMPLING REQUIREMENTS

3.1 Soil sampling 1 shall be performed by the Contractor upon completion of the excavation shown on Sheets 3 through 6 of the Plans as specified in Section 2C. The Contractor shall collect samples for his laboratory to analyze and QA samples.

3.2 Location of soil samples shall be on a grid 40 ft x 40 ft or 20 ft x 20 ft as shown on the Sheets 3 through 6 except for the gulley area where Contractor shall collect a sample each 40 ft along the centerline of the gully.

3.3 Soil Samples shall be taken at the base of the excavation to determine that the remaining soil is below site specific action levels. Samples should not be taken in areas of standing (ponded) water.

3.4 For sample locations where constituents exceed site specification levels, Contractor will excavate an additional six inches of soil as specified in Section 2C. At the base of this additional excavation, and at the grid described in 3.2 above, the Contractor will collect 4 additional soil samples at the depths 0-6 inches, 6-12 inches, 12-18 inches and 18-24 inches.

This sequence of collecting 4 soil samples at the base of excavations where constituents exceed site specification levels will be continued until samples from all sampling locations meet site specification levels.

3.5 The existing concrete structures on site shall be sampled as described in Section 2N.

3.6 A minimum of one groundwater sample shall be taken from each well before and after excavation of contaminated materials.

4. SAMPLING PROCEDURES

4.1 Soil Samples. Soil samples shall be taken from each location as descried in paragraph 3.2. Initial samples shall be collected from the bottom of the excavation at a depth of 0 to 6 inches with a new sampling instrument. Each additional sample described in paragraph 3.4 above shall also be collected with a new sampling instrument.

4.1.1 Sample Containers. Soil samples shall be placed in new glass bottles with new caps and new teflon liners. Each individual soil sample shall be of approximately equal size so that the sample fills a sixteen (16) ounce bottle to the three-fourth (3/4) volume. Each bottle shall be labeled as to location, depth of sample and sampling time and date.

4.1.2 Sample Storage. It is the Contractor's responsibility to preserve and retain the unused portions of all soil samples in their containers. These samples shall be stored until project closeout, at

2E-2

which time they shall be properly packaged and disposed of as indicated in Section 2G. The Contracting Officer may require further analyses to be run on these samples during the duration of the project.

4.2 Groundwater Samples. All three groundwater wells shall be sampled in compliance with Water Well Standards: State of California. Bulletin 74-81, December 1981, Department of Water Resources. Samples collection and analysis shall be as defined in Section IK of the Specifications.

5. ANALYSES

5.1 Analyses of Soil Samples. A representative sample shall be obtained by the Contractor's laboratory from each sample container for analysis. Each soil sample shall be analyzed as described in Section IK.

5.2 Analyses of Groundwater Samples. Each groundwater sample shall be analyzed as described in Section IK.

5.3 Analyses of Concrete Samples. Each concrete sample shall be analyzed as described in Sections IK and 2N.

2E-3

SECTION 2F OFF-SITE TRANSPORTATION

INDEX

1. General Contractor Requirements 2. Related Requirements 3. Loading 4. Hauling

!• GENERAL CONTRACTOR REQUIREMENTS .•

„ 1,1 Tlie Contractor shall provide to the Contracting Officer, as part of the Materials Handling Plan, a program for the proposed transportation of wastes generated by the execution of Sections 2C and 2N. This plan shall be submitted as part of the overall site work requirements specified in Section ID, 'Summary of Work." The Contractor shall submit with his bid a certifi­cation that the transporters of hazardous wastes who will be used on this project are properly licensed. Any proposed deviations from the approved list of transporters shall be summitted by the Contractor for approval by the Contracting Officer with no additional costs incurred by the Government. Such deviation shall be submitted for approval at least 10 working days prior to scheduled shipment.

1.2 The Contractor shall utilize appropriate vehicles and operating practices to prevent spillage or contamination from occurring enroute.

1.3 The Contractor shall originate, use, and maintain the waste shipment records/manifests required by the Federal Resource Conservation and Recovery Act (Public Law 94-580), the State of California and other involved states as applicable.

1.4 The Contractor shall perform vehicle cleaning and inspection before leaving the site.

1.5 The Contractor is responsible for coordinating hauling with site work schedules.

I

1.6 All actions noted in this section must be approved by the Contracting Officer.

1.7 Contractor shall follow all appropriate federal, state and local regulations regarding the transportation of hazardous waste.

2. RELATED REQUIREMENTS

ID: 1M:

Section Section Section 2C: Section 2D: Section 2G: Section 2N:

Summary of Work Spill Control Contaminated Soil Removal Contaminated Liquids Collection and Disposal Off-Site Disposal Sampling, Demolition and Removal of Concrete Structures

2F-1

3. LOADING

„ P1? Contractor shall furnish, install, and maintain any temporary loading facilities as required for completion of waste removal activities. Ihe location and design of any facilities must be included in the Materials Handling Plan and be approved by the Contracting Officer.

~ ? The Contractor shall provide the equipment, personnel and acilities necessary to handle and load waste materials designated for off-site transport.

3.3 The Contractor shall ensure that all operations in the loading and auling of contaminated wastes are in compliance with the appropriate local, state and Federal DOT regulations. F '

3.4 All vehicles hauling wastes shall be lined with plastic sheeting and securely covered. All vehicles hauling bulk wastes from the site shall be inspected by the Contractor prior to leaving the site. No vehicle that can drop or drip any quantity of material shall be allowed to leave the site i

3.5 All vehicles leaving the site shall be inspected by the.Contractor o ensure that no excess soil adheres to its wheels or undercarriage. All excess soil and any waste material that is detected shall be removed at the decontamination facility.

3.6 The Contractor shall keep all paved surface streets clean of dirt and debris.

4. HAULING

4.1 The Contractor shall implement a hauling or transport schedule, as part of the Materials Handling Plan, which allows for removal of the waste irom the site at a rate commensurate with the work schedule. The hauling and transport schedule shall be updated weekly and furnished to the COR.

4.2 The Contractor shall obtain manifest forms, obtain waste code numbers, and complete the waste shipment manifest records as required by the a lfornia Department of Health Services for verifying the waste type (Code No.) and quantity of each load transported offsite. The manifest form shall be yerified and signed by the COR. Copies of each manifest shall be retained by the COR following shipment. Any manifest discrepancies shall be reported immediately to the COR and be resolved by the Contractor.

•P -1 ?' c°ntractor shall transport waste from the site to only those facilities listed on the manifest.

r 4'f.c°ntractor shall coordinate vehicle inspection and recording vL?fal5 iw "5 thS SitG With the °°R' These q tities shall be verified with recorded quantities at the disposal facilities. Vehicles

2F-2

shall be unloading

weighed before and after loading at the site and before and after at the disposal facility and recorded on the manifest.

4.5 The Contractor shall be responsible for any and all actions necessary to remedy situations involving waste spilled in transit or mud and dust tracked offsite. These actions shall be accomplished solely at the Contractor's expense (see Section 1M: Spill Control).

4.6 The Contractor shall be responsible for establishing the route that shall be followed for all truck vehicles going to or from the site. Routes and timing must meet with the concurrence of appropriate local, County and State regulatory agencies and be approved by the COR.

4.7 Trucks shall be either properly lined with compatible material and covered to protect against contamination, or shall be decontaminated prior to use other than for hauling hazardous waste.

4.8 Any unresolved discrepancies noted on the manifest shall be reported by the Contractor in writing to the California Department of Health Services and Contracting Officer within 10 days.

2F-3

SECTION 2G OFF-SITE DISPOSAL

INDEX

1. General Contractor Requirements 2. Related Requirements > 3. Off-Site Disposal 4. Recordkeeping

1. GENERAL CONTRACTOR REQUIREMENTS

1.1 The work shall involve off-site disposal of the contaminated soil and other contaminated materials, as well as non-hazardous wastes according to the type of material and degree of contamination. Detailed transpor­tation requirements are provided in Section 2F. No disposal sites outside continental United States shall be considered for disposing of contaminated soil or materials from this project.

1.2 The Material Handling Plan prepared by the Contractor shall describe the disposal of contaminated materials as part of the overall site work requirements specified in Section ID "Summary of Work".

1.3 The Contractor shall coordinate the schedule for truck, and waste deliveries to the disposal site to meet the approved project schedule, for compatibility with temporary storage/staging space limitations on-site and the availability of equipment or personnel for materials handling operations.

1.4 The Contractor shall obtain letter of agreement from the disposal facilities to accept the waste shipments. A copy of each such letter shall be maintained in the Contractor's files. The letters shall indicate:

1.4.1 The agreement to accept the specified estimated quantities of waste and waste types as described during the time period specified in the project schedule.

1.4.2 The intended method of disposal by the disposal facility for each shipment (e.g., incineration, specific physical/chemical treatment, neutralization, encapsulation, burial).

1.5 The Contractor shall submit, with his bid, the proposed list of disposal sites (with letters of agreement) to be used, and written assurances that, to their best knowledge, they will be open for business during the contract duration, they are licensed and will accept the waste indicated in this project, and they are in compliance with the EPA 6 May 1985 Off-Site Disposal Policy as printed in the November 5, 1985 Federal Register. The letter must contain a firm priced commitment to accept the waste as specified herein.

2G-1

2 . RELATED REQUIREMENTS

Section 2C: Contaminated Soil Removal Section 2D: Contaminated Liquid Collection and Disposal Section 2F: Off-Site Transportation

3. OFF-SITE DISPOSAL

3.1 The Contractor shall use only the disposal facilities, previously approved, for the performance of the work. This contract will not be awarded to a contractor who intends to utilize an off-site disposal facility that is not in compliance with the EPA 6 May 1985 Off-Site Disposal Policy. The approved disposal facilities can provide disposal quotes on the assumption this contaminated soil will be delivered to their site in the June, July, August, and September 1987 time frame. It is recognized that a disposal facility's EPA status is subject to change; however, the disposal facility should provide the necessary pricing information to the prospective bidders based on the EPA status of the facility at date of bid opening.

3.2 The Contracting Officer reserves the right to contact and to visit disposal facilities and regulatory agencies to verify the agreement to accept the stated waste material and to verify any other information provided.

3.3 In the event the approved disposal facility status is changed after contract award, the Contractor must obtain the Contracting Officer's approval of alternate disposal facilities he selects to receive the contami­nated soil. Each selected disposal site must be in compliance with the 6 May 1985 EPA policy.

4. RECORDKEEPING :

4.1 The Contractor shall provide to the Contracting Officer the written manifest verifying the quantity received (volumes and weights, as necessary) from each load at the disposal facility, and verification of proper disposal.

4.2 If notification of receipt of any waste shipment is not received by the Contractor within two (2) weeks of departure of the waste from the site, the Contractor shall immediately notify the Contracting Officer and contact the disposal facility to determine the status of the shipment and resolve the discrepancy.

4.3 If the manifest discrepancy is not resolved then an exception report must be filed with the California Department of Health Services and the Contracting Officer within ten (10) days of discovery of the discrepancy by the Contractor.

< 2G-2

SECTION 2H

BACKFILL AND FINAL GRADING

INDEX

1. General Contractor Requirements 1 4. Preparation for Rough

_ _ ! , Grading 2. Related Specifications

ui m. T_ 1 • . . 5* Borrow Materials o. Applicable Publications

6. Placement of Backfill

!• GENERAL CONTRACTOR REQUIREMENTS

at thMuIh:„COnt t0r responsible for backfilling and/or cutting at the Bite to achieve the final grade as shown on Plans. If some adjustments in the fill surface are required based on actual field

te sutoittednbvUthrS construction, the proposed adjustments shall sutmitted by the Contractor to the OQR for review and approval.

. .1'2 The1 Contractor shall be responsible for locating, procuring.

required&to SEE 101,8011 U11 io pities

2- RELATED REQUIREMENTS

Section ID: Summary of Work

Section 1J: Safety, Health and Emergency Response Requirements

Section IK: Chemical Data Quality Management

Section 2A: Site Preparation

Section 2C: Contaminated Soil Removal

Section 21: Revegetation '

3* APPLICABLE PUBLICATIONS

American Society for Testing and Materials (ASTM1

Standards ' ; L

D-1S57 Moisture-Density Relations of Soils and Soil Aggregate Mixtures, using 10-lb Rammer and 18-inch drop

Relative Density of Cohesionless Soils TY~™ Laboratory Determination of Moisture Content of Soil

Density of Soil in Place by the Sand-Cone Method

2H-1

D-2167 Density of Soil in Place by the Rubber-Balloon Method

4. PREPARATION FOR ROUGH GRADING

4.1 Establish and identify required lines and grades.

4.2 Maintain or re-establish benchmarks, monuments, grid and survey stakes, and other reference points as required to establish the final grade.

5. BORROW MATERIALS

5.1 Subsoil Fill.

5.1.1. Gravel or rocks present in fill shall have a maximum particle size of 5 inches. In addition, the subsoil fill shall have less than 25 Percent retained on the 3/4-inch sieve, less than 50 percent retained on the No. 200 sieve, and a plasticity index of less than 12. The soil shall be free from plants, roots, debris, and waste material.

5.1.2 Borrow materials shall be tested for soluble and total concentrations of all Inorganic Persistent and Bioaccumulative Toxic Substances as defined in the California Administrative Code, Title 22, Division 4, Article 11. Borrow materials will also be tested for Organochloride Pesticides and PCB's using EPA Method 8080, for Volatile Organics using EPA Method 8240, and for Semi volatile Qrganics using EPA Method 8270, all EPA Methods as published in SW846, July 1982. Laboratory results shall be delivered to the COR within 5 days of sampling. If the soluble or total concentrations of arsenic, cadmium, copper, lead, zinc, mercury, selenium or cyanide exceed their respective SSAL's, the backfill material is not acceptable for use.

If the concentrations of other inorganic persistent and bioaccumulative toxic substances or organic substances exceed their EPA Method detection limits, the lab results shall be submitted to the COR for review. Depending on the lab results, the COR may accept or reject the backfill material for use on the site.

Refer to Section IK for sample number, size, QA sample requirements, containers, preservations, methods, equipment, equipment decontamination and nature of blanks.

5.1.3 Backfill for the CMP trench shall conform to the chemical and physical subsoil fill requirements as for the other areas, except the maximum particle size shall not exceed 2 inches.

5.2 Topsoil.

5.2.1 The upper 8 inches of fill shall consist of topsoil. This includes selectively excavated material that is representative of soils in the vicinity that produce heavy growths of crops, grass, or other vegetation, and is reasonably free from underlying subsoil, clay lumps, objectionable weeds, litter, brush, matted roots, toxic substances, or any

2H-2

material that might be harmful to plant growth or be a hindrance to grading, planting, or maintenance operations. Topsoil shall not contain more than five percent by volume of stones, stumps, or other objects larger than 3/4 inch in any dimension. No particle shall exceed 2 inches in any dimension. Topsoil shall be dark in color due to organic matter and humus which shall be present in amounts not less than 5 percent.

5.2.2 Topsoil shall be tested for chemicals as specified in paragraph 5.1.2 and Section IK.

5.3 River Run Gravel. i

5.3.1 River run gravel shall be durable, crushed rock, "river run" rock or gravel with 100 percent passing the 2 inch sieve and less than 10 percent passing the 3/4 inch sieve.

6. PLACEMENT OF BACKFTT.T.

*,'• u6'1 )ackfi11 is Placed on an existing cut or fill slope which exceed 4(H): 1(V) the slope shall be benched a minimum of 6 feet or as ut?fn?;nef by the COR' material that is removed in the benching process shall be incorporated into the fill, if suitable.

. . Placement of—Subsoil. Subsoil backfill shall be adjusted to DW j J Percent of the optimum moisture content and compacted to between

.ana 9 % of the maximum dry density. Optimum moisture content and maximum dry density shall be determined by ASTM D1557 or AS1M D2049 whichever is applicable. The maximum compacted thickness per layer shall be 8-inches. The Contractor shall adequately control his compaction-operations by tests made in accordance with ASTM D1556, ASTM D2167 or ASTM D2216. A minimum of 50 density tests are ; required at locations approved by COR. Compaction testing shall be performed by an independed soil testing company.

. 6-l-2 Placement of Topsoil. The final layer of backfill (8-inch topsoil) shall be placed and graded to the density and moisture content of the existing native soils in the area. Topsoil shall be "firmed" by light rolling or culti-packing with agricultural equipment. The Contractor shall be responsible for investigating and establishing the moisture-density relationship of these native soils for the placement of the new topsoil to the satisfaction of the COR.

i Backfill for CMP pipe drain shall be placed as shown on Sheet 11. Backfill (subbase) for restoring the fishing access road and for the decontamination pad shall be adjusted within + 2 percent of the optimum moisture content and compacted to 92% percent of the maximum dry density as determined by ASTM D-1557 or D-2049 whichever is applicable.

2H-3

SECTION 21 EE-VEGETATION

INDEX

1. General Requirements 1 . 2. Vegetation : ; 3. Planting Procedures 4. Maintenance 1

5. Final Acceptance

1. GENERAL CONTRACTOR REQUIREMENTS

1.1 The Contractor shall be responsible for seeding the site with grasses. Additionally, the channel area will be re—vegetated with shrubs and vines. Areas used for temporary relocation of fishing road shall be reestablish to the original conditions.

1.2 New vegetation shall be maintained and re-seeding carried out as required.

1.3 The specifications shall apply only to those areas of soil removal and replacement as required for: the cleanup of the Celtor Chemical Site, and any adjacent areas which are disturbed in the cleanup process.

2. VEGETATION

2•1 Naturally Vegetated Areas. All areas except the agricultural field (Area B on Sheet 3) shall be seeded to grasses using the follow­ing seed mix:

lbs./acre* Blando Brome (Bromus mollis) ann. 6 California Oatgrass (Danthonia californica) per. 6 Idaho Fescue (Festuca idahoensis) per. 6 Annual Ryegrass (Lolium multiflorum) 3 Perennial Ariki Ryegrass (Lolium perenne) 3

Total lbs. per acre 24 * 95 percent or more pure live seed.

In addition to the above grasses, the area along the drainage ditch (Area C on Sheets 3,4,& 5) shall have scattered vegetative plantings of wild grape (Vitis California) and willow (Salix lasiandra) added after t e grass is seeded. These plantings are for the purpose of increasing resistance to erosion during periods of high run-off.

21-1

2-2 Agricultural Field. The agricultural field currently being used for irrigated pasture (Area B on Sheet 3) shall be seeded with the following pasture mixture:

lbs./acre* Salina Strawberry Clover (Trifolium fragiferum) 8 Perennial Ryegrass (Lolium perenne) 6 Tall Fescue (Festuca arondinacea) 6 Orchardgrass (Dactylis glomerata) . 12

Total lbs per acre 32 *95 percent or more pure live seed.

3. PLANTING PROCEDURE

2•1 Planting Time. All planting, both seeding and placement of vegetative material shall be done in period May thru October, prior to the winter rains. The risk of losing such plantings to heavy showers is high, however, and several replantings may be required before the desired vegetative cover can be established.

3*2 Seedbed Preparation. Areas to be seeded shall be cleared of any debris accumulated during backfilling and shall be uniformly graded to provide positive drainage. Within one day prior to seeding, the area shall be disced or otherwise tilled to breakdown clods into a granular condition and loosen the soil to a depth of at least three inches. Seeding shall be done while the soil is in this loosened condition, before subsequent rains or traffic have a chance to re-compact it. A straw mulch shall be applied over the seeds to provide erosion protection until the new vegetation is established.

A complete fertilizer shall be applied and incorporated into the soil simultaneously with the tillage, to provide the following amounts of available plant nutrients:

Nitrogen 60 lbs/acre i Phosphate 60 lbs/acre Potash 30 lbs/acre

If the backfill topsoil has been borrowed from areas not currently supporting healthy vegetation, samples shall be submitted to a soils laboratory and the laboratory's recommendation for fertilizer used instead.

3•3 Method of Planting. The indicated amount and mixture of seed shall be uniformly distributed over all ground areas excavated, back­filled and otherwise disturbed in the clean-up process in such manner that will produce an even stand of plants over the • entire seeded area. Seed may be broadcast or drilled.

3•3.1 Broadcast Seeding. Broadcast seeding shall be done with hand carried and operated, or tractor mounted and power driven, centri­fugal seeders. Broadcast seedings shall be covered with soil to an average depth of one fourth inch by harrowing with a spike-tooth harrow or similar equipment. Following distribution, seeds shall be pressed

21-2

into the soil by means of an agricultural type cultipacker providing 60-90 pounds weight per linear foot or by equivalent rolling methods. Broadcast seeding shall not be permitted when wind velocity prevents uniform seed distribution.

3.3.2 Drill seeding may be used only in the pasture area.

3.3.3 Hydroseeding shall not be used.

3.4 Vegetative Planting. Willow cutting and wild grape plants shall be planted in Area C only according to the pattern illustrated on Sheet 9.

Willow cuttings shall be 24 inches long, at least one inch in diameter at the butt end and 3/4 inch in diameter at the tip end. The butt end shall be cut diagonally at a 45 degree angle and the tip end cut straight across. Cuttings shall not be stored more than 3 days and will be kept moist until planted. When planting, the butt end will be placed in the soil to a depth of 18 inches leaving six inches protruding above ground. If the soil is moist and sufficiently soft, the cuttings may be simply pressed into the soil to the required depth. If not, a shovel, auger, or crowbar shall be used to open a hole to receive the cutting followed by backfilling and firming of the soil around the cutting to insure adequate contact between cutting and soil.

Wild grape, shall be uprooted and transported to the new planting site in "bare root" condition. Replanting shall be done in three days or less. During this time the plants will be kept moist and the roots in the dark. When planting, the above ground parts shall be pruned back to approximately the same volume as the roots.

4. MAINTENANCE

The Contractor shall be responsible for the establishment and maintenance of the re-vegetated areas for a period of one year following project completion and acceptance by the COR.

4.1 Irrigation. In the event fall planting fails and replanting is done the following spring, irrigation shall be provided from the date of planting until October 15 or until the grasses have reached a height of 6 inches whichever occurs later. Water shall be applied using a sprinkler system in a manner which will provide uniform cover­age at a rate which shall not cause ponding, run-off, erosion or disturbance of the seeded, bare soil surface. An amount of water equal to one fourth inch in depth over the entire planted area shall be applied within 2 days of planting and every other day thereafter until the seeds have germinated and the grasses grown to a height of six inches. Subsequently, one inch of water shall be applied weekly until irrigation is terminated as specified above.

4.2 Clipping. When the fastest growing grasses have reached a height of 12 inches, they shall be clipped (mowed) at a height of 6-8

21-3

inches. Tops shall be allowed to remain where they fall without windrowing or bunching in any way.

4.3 Repair and Reseeding. During the maintenance period, any areas eroded or otherwise damaged shall be promptly repaired. These and any other areas where the expected stand fails to develop, shall be promptly reseeded with the same seed mixture and rate as specified for the original seeding. In addition, the contractor shall perform any other acts necessary to insure close-growing vegetative cover over 100 percent of the area disturbed in this clean-up operation.

5. FINAL ACCEPTANCE

Final inspection and acceptance (or rejection) of planting shall be one year following completion and acceptance of the project by the COR. Acceptance shall be contingent upon the reseeded vegetation being of a sufficiently dense stand and healthy, vigorous growth to maintain itself and soil stability under normal natural conditions without further attention.

21-4

SECTION 2J

CHAIN LINK SECURITY FENCE

INDEX

1. Applicable Publications 2'. Materials 3. Installation 4. Grounding

1. APPLICABLE PUBLICATIONS

1•1 Federal Specifications. ER-F-19J/GEN

ER-F-191/1C

RR-F-191/2C

RR-F-191/3C

RR-F-191/4C

Fencing, Wire and Post, Metal and Gates, Chain link Fence Fabric, and Accessories

Fencing, Wire and Post Metal Chain Link Fence Fabric

Fencing,Wire and Post, Metal Chain Link Fence Gates

Fencing, Wire and Post, Metal Chain Link Fence Posts, Top Rails and Braces

Fencing, Wire and Post, Metal Chain Link Fence Accessories

1,2 American Society for Testing and Materials (ASTM) Standards.

A 569-72 (R1979)

A 570-79

Steel, Carbon (0.15 Maximum, Percent) Hot-Rolled Sheet and Strip, Conanercial Quality

Hot-Rolled Carbon Steel Sheet and Strip, Structure Quality

Ready-Mixed Concrete C 94-81

2. MATERIALS

• Materials shall conform to Federal Spec. RR-F-191 and detailed specifi­cations forming the various parts thereto. Chain link security fence shall be constructed at the locations and alignment shown on the drawings and in accordance with drawings shown on Pages 2J-5 and 2J-6. The fence should be type FE6-TR-72 as shown in these details. Variations from this type, as described in the notes on these details, will be provided in accordance with the exact fence type indicated on the drawings. All chain link security fence shall be the product of one manufacturer. Products which differ only in non-essential details from those specified herein shall be acceptable.

2J-1

Drawings shall be submitted for any deviations in accordance with Section 1A - Special Clauses, Paragraph 19.

2'1 Chain Link Fabric. Federal Spec. RR-F-191/1, Type I, 1.2 ounces P- square coating» or Type II, 0.40 ounce per square foot coating, and shall be 9-gauge wire woven in a 2-inch mesh. Fabric width shall be as indicated.

2'2 Post, Rails,—and Braces. For each gate, corner, pull, or end post, truss rods shall be provided with turnbuckles or other equivalent provisions for adjustment.

2.2.1 Post Braces and Truss Rods. For each gate, corner, pull, or end post, truss rods shall be provided with turnbuckles or other equiva­lent provisions for adjustment.

. 2"2*2 Intermediate Posts. C-Section line posts of the same lmension as H-post, 0.120-inch wall thickness, and fabricated for steel conforming to ASTM A570, Grade 33 may be furnished in lieu of H- or round posUS•

2.2.3 Posts Braces, Rails, and Gate Frames - Option. Steel pipe manufactured from steel conforming to ASTM A569, cold-rolled and coated with a minimum of 0.9 ounce of zinc per square foot, a minimum of 15 micrograms oi zinc chromate per square inch and minimum of 0.3-mils cross link poly-urethane acrylic exterior coating may be furnished in lieu of H- or round posts. Steel pipe shall be of the same external dimension as round posts in Federal Spec. RR-F-191/3 for the respective uses with minimum wall thickness . as follows:

Outside Dimension. Inches 1.66

! 1.90 2.375 2.875

2.3 Accessories. Federal Spec. KR-F-191/4

Wall Thickness, Inches 0.111 0.120 0.130 0.160

2.3.1 Reinforcing Wire. Minimum tensile strength of 75,000 psi, zinc coated for use with zinc-coated fabric and aluminum coated for use with aluminum-coated fabric. Minimum weight of aluminum coating shall be 0.40 ounce of aluminum per square foot of wire.

,, 2,3'2 Tie Wire. Aluminum alloy of 0.144-inch diameter for attaching fabric to top rail and to intermediate posts. Performed clips of 6-gauge, zinc coated, steel wire may be used for attaching fabric to inter­mediate posts.

2.3.3 Hog Rings. Aluminum wire attaching fabric to bottom reinforcing wires.

of 0.110-inch diameter for

2J-2

2.4 Gates. The gate shall comply with Federal Spec. RR-F-191/2 and as shown on pages 2J-5 and 2J-6. Gates frames and accessories shall be zinc coated, 1.8 ounce per square foot. Gate fabric shall be as specified for chain fabric. Each end member of gate frames shall be extended sufficiently above the top member to carry three strands on the fence. Gate leaves more than 8 feet wide shall have either intermediate members and diagonal truss rods or shall have tubular members as necessary to provide rigid construction, free from sag or twist. Gate fabric shall be attached to the gate by method standard with the manufacturer except that welding shall not be permitted. Latches shall be arranged for padlocking so that padlock shall be accessible from both sides of the gate regardless of the latching arrangement. Gates shall be provided with stops for holding gates in the open position.

. '5 Concrete. ASTM C94, using 3/4-inch maximum-size aggregate, and having minimum compressive strength of 3,000 psi at 28 days.

3. TNST AT ,T .ATTDM

The fence shall be installed on previous prepared surfaces to line and grade indicated. Fence installation shall be as specified and in accordance with the fence manufacture's written installation instructions. The fence shall be approved by the 00R prior to any work in the Exclusion Zone.

3.1 Excavation. Excavation for concrete-embedded items shall be of the dimensions indicated. Post holes shall be cleared of loose materials. Waste material shall be spread where directed. The ground surfaceirregu-larities, along the fence line and in areas not being altered by area grading, shall be eliminated to the extent necessary to maintain a 2-inch clearance between the bottom of the fabric and finish grade.

3*2 Post Setting. Posts shall be set plumb and in alignment. Posts shall be set in concrete bases of dimensions indicated. Concrete shall be thoroughly compacted so as to be free of voids and finished in a dome. Straight runs between braced posts shall not exceed 500 feet. Concrete shall be cured a minimum of 72 hours before any further work is done on the posts.

3,3 Post—Caps • Post caps shall be of the design as required to accommodate the top rail. Post caps shall be installed as recommended by the manufacturer.

.3,4 Supporting Arms. Supporting arms shall be of the design as required to accommodate the top rail. Supporting arms shall be installed as recommended by the manufacturer.. , ,

3,3 Top Rails. Top rail shall be installed before installing chain link fabric and shall pass through intermediate post caps. Expansion couplings shall be provided and spaced a maximum of 100 feet on centers.

3*S Bottom—Reinforcing Wire. Bottom reinforcing wires shall be installed before installing chain link fabric and shall be pulled taut.

2J-3

3.7 Fabric. Fabric shall be pulled taut and secured to the top rail and bottom wire close to both side of each post and intervals of not more than 24 inches on centers. Fabric shall be secured to line posts using ties or clips at the top and bottom and at intervals of not more than 18 inches. Fabric shall be secured too end, corner, pull, and gate posts for the full length by integrally weaving the fastening loops or by using stretcher bars and bands.

3.8 Gates. Gates shall be hinged to swing through 180 degrees from close to open. Gates shall be complete with latches, stops, keepers, fabric, braces, and locks and shall conform to the drawings shown on pages 2J-6 and 2J-7.

4. GROUNDING

4.1 Fence shall be grounded at each side of every gate, at points 150 i nLT overhead power-transmission lines, at intervals of every 1,000 to 1.500 feet of length when fences are located in isolated places, and every 500 to 750 feet when in close proximity (100 feet or less) to public roads, highways, and buildings. Fence shall be grounded at locations where the fence alignment changes more than 15 degrees.

4.2 Fence Posts. Each fence post to be grounded shall be connected to a ground electrode consisting of a copper-clad steel ground rod 3/4 inch in diameter and 10 feet long, driven not less than 11 feet into the ground with rod located at the fence line or as near the fence line as practicable. Connection of fence post to ground electrode shall be made below grade with not less than No. 4 AWG stranded-copper wire with Ttf or RR insulation by approved molded exothermic weld process or approved clamp-type fitting of copper on fence and electrode. Each gate panel shall be bonded with a flexible bond strap to its gate post.

2J-4

' i orn/r ex ten

barbed ~nre apron on extension or/nS

1 === 1—~ i -Y top ' O't or retiforcmp

Currier end or pub pOSfx,

J Go* r \ property | hue, c

3 re no/e -r

~\me pojr

Cftcn hnA tabric, ,Ti

Line Posff

r Bottom of fabric

11 , I ' I

Cone base Topical layout of corner on J erxj pane! arxJ one natf

ofo pu/1 po if

to' O 'max

» •

i 1

j ' I v (robe -S • fiernforcmp mrc

Typical layout of hne port panels

tO'- O'enoA

ro Lmepojti to ie equally spaceef

CHAIN LINK SECURITY FENCC DETAIL

bottom of fabric.

U

>

4) •4 03

I IC

%*> = i -U • < ; I? rw

, 1

c ! ; e 11 11 V * t i« n r\ w _

Grade.

•Top rail or rernforcmy xnre

__ Pol!post ,

erg.* mm of hnepoil\

!C 4.x ,„.n to comer, crd TYPICAL PULL POST antS pis//posts.

CONG. POST BASE belt shuped bate j

'•»/»•// have aim dia sPovn of Surface

fabric lotted to pullpoit by ift echer borx f! bar bandi install tu/i merer unbraced Jcnytp eeeeedi loo feel

Pipe cu/rerf. If required, 12' mm. / fool mm cover over- top of pipe at fenee/me

TYPICAL FENCE BCRM

11011 S:

1. rht type and lakirlc wtdin ok chain link security Imu shown on Ilia

Contract layout dtawlnq shall IK determined by the lolk»»lng designations-.

lype ID - Chain lint lence without barbed win apron lype 116 • Chain I Ink I ente wlbarbed wire on slnqle outrigger lyye 1(1 - Chain link fence w/barbed wire on doudla oulliqgers Type flJ • Hlon Security Chkln link tenet I tee Omaha Olitrlcl

lor Standard Ofawlngtl TR - tenet arilh lop iall and retnlorclnq wire at bottom TWB • Relnlordnq wire lop and botlom Final number li Ijorlc width In Inches.

[jamptrv fTi-TR-f? - Chtln link Security tente wllh apron, lop rail

and U Inch laorlc width. FD-rWB-« • Chain link tenet with top and bcktom

letnlorctng wlrt. no apron and <8 Inch wide laOrlc. 2. Unlets specifically thown or specified otherwise on the contract dr»wtngt,

all fI6 tenet thall ha*e apron eilended outward I torn aria being preceded. 3. Licept tor Iht staled minimum sites In the Schedule, and the require­ment Haled speclllcalty In Hit specifications. Chain link Security tenet lhall be Iht standard produd ol Iht manuladurer who It regularly engaged In iht nunuladuit ok chtln link leeurlly lenclng. Small parts. accessories and luch hew)} shall be standard ok Ihe manuladurer.

4. Unless spedflcally staled olherarise on Ihe conlrad plans, chain link security lenct will be placed one loot Irom property.

5. Where special Installations ok lence are specllled. such as lenct In or on a concrete wall or tlab, remo>at>le lence panelt, and other tueh special Installations. Ute manulactuier*s standard method ot supporting posts shall be used subjed to approval on Ihe method ok support.

t 0 S 1

USL AMO SICUIM Aiaic uw IMAH tr |»A««ic rr 10 *- iAtaiC ovt« w

C0*Mt.(n« 4 full Fvtlt lutuui • ««unrt

IwhlUf • MU4II ftedl •

? sir oo ) *»«( i 0- ) aOlM j m r 4 u t*f

2 UT 00' J n 141 i.r« 5 » MI j n\ r 4.*« MI

4 cr* 00 1.11 Ml ) r• w 1 10 >4/

UK PO^T lukuUf • rvunri

H • C •

(•oil •

j w oo M? i*r i ifv .i an l TO #41 J l/Y'il UT'4 XT'

2 71 t\t

7 vr oo 1 L/T'«L 47T 7. n 141 7.7T*«i w«a \r

7 a4 #4»

7 I7T* 00 > n '4( ? ZT'il W 4 10 14

LL>fa a«M L ti«a a»II IIAMUI - I«URD LUTWML • MUMI M • S*OUN 8^4

\ a*~* oo i n i4f |V)U) IVRI I an**a i v MI i4i i *JT>1 rr * o /AT

i n ••J

t

•a I :t;:

* f„ ;;c

; ! » :

: '!

! ;

Vy .:?•!

i;5K:i' (5 4 1 r J j

• ' ; j J § ;

• V'$ i

| f •

INDEX

1. ; General Contractor Requirements 2. i Materials u. 3. | During Construction l<', 4. | Final Cleaning '' '

1. GENERAL REQUIREMENTS 1 j,

The Contractor shall conduct cleaning and disposal .operations to comply

with all applicable codes, ordinances, and regulations. ; ;j | ;

2. MATERIALS m : The Contractor shall use only the cleaning materials and methods that

will not create hazards to health or prosperty. , | j

3. DURING CONSTRUCTION : /HJ'H" . 'V1 - • •!

3.1 The Contractor shall execute 'daily cleaning of the site to-collect any accumulation of waste material .discarded ;; safety/protective equiprien , StaSSS waste, debris, refuse, and rubbish. Collected material will be placed in proper containers at staging/storage areas for disposal. ~

: ' 3.2 The Contractor shall execute weekly: cleaning to, keep the site and adjacent properties free form accumulations of refuse materials, rubbish,,

« i i • n ' * -lon+ nnomf 1 nnfl. > !l ! ' i . 1 i ' fct » i

for the collection

and debris resulting from project operations. ;;

= 3.3 The Contractor shall provide on-site .containers! ___ _ . , and secure containment . of: i contaminated;!: waste materials, discarded safety/protective equipment, laboratory ;waste,,and. other jwaste generated y

project activities. :pi'vhlj-I;: 'IIX ;5l1 '• ; I: :•' iii '• t /i^i- .'fsfc;-.! ; i •

3.4 The Contractor shall provide'on-site,containers for the collection of nonhazardous waste materials,. refusedebris, and riibbish. | ~

I 3.5 The Contractor .• shall remove hazardous waste-related and non-hazardous waste materials, debris refuse, and rubbish from the site wee y and dispose of at approved disposal' areas, iHazardous_waste, materials be disposed of in an approved hazardous;waste disposal facility. j, ,

!•"' :j.'4 . : v'liN-1. • • :!•* A I- TTTMAT • CLEANING •! "'•H j f!! "" I ' :> '< ' , '

! 4.1 Prior to completion of!.the work, the Contractor shall conduct an inspection of all work areas and certify, to the Contracting Officer; for is approval that the entire site is clear,of all waste materials, rubbish, an ~ : "• ''.'li'tli i' "r ll'i1 •!. i| ! 'i!: »'i i; - i: i I:1/' '• t; '! : debris. • : ; •! fH'i;! -HI i, I i; ' ! |1 :• ' jj j.;-1?

i t1' : : '' . '"!< lK.it- • !i. 1 ' <

i '•I. ... •

;--k

! " ' :

: :!

' i

SECTION 2L DEMOBILIZATION

INDEX

1. General Requirements

1. GENERAL REQUIREMENT

1.1 The Contractor shall rebuild the section of the permanent access road through the site area and remove security fences and gates.

1.2 The Contractor shall remove all gravel from the temporary fishing access road and re-establish preconstruction conditions in this area, including reconstruction of fence along permanent fishing access road.

1.3 Decontaminated vehicles and equipment shall be inspected and approved by the Contractor and Contracting Officer prior to removal from the project site. The Contractor shall adhere to all vehicle decontamination

specif ications.

1.4 The Contractor shall disconnect and remove temporary utilities,

and shall remove all temporary structures.

1.5 The Contractor shall submit to the Contracting Officer the utility meter readings or other necessary information relating to the point where the Contractor has been released of responsibility for payment of these services. In addition, the Contractor shall submit the as-built drawings to

the Contracting Officer.

1.6 The Contractor shall repair any erosion or runoff-related damage to the final covers and restabilize as directed by the Contracting Officer.

1.7 The road between the Exclusion Zone and the decontamination slab shall be tested for possible cross contamination as specified in Section 2C paragraph 4.5.4. Five soil samples shall be collected at the locations

approved by COR.

1.8 The decontamination slab and all other slabs shall be steam cleaned, removed and disposed of at Class III Landfill or as directed by the Contracting Officer prior to backfilling that portion of the site.

1.9 Contaminated soil found as a result of the sampling in 1.7 above shall be excavated and disposed of in accordance with the provisions ot

Section 2C.

2L-1

SECTION 2 M CONCRETE

INDEX

1. Reference Publications 11. Installation of Anchorage Items

2. General 12. Preparation for Placing

3. Materials 13. Batching, Mixingj

4. Air-Entrained Concrete Conveying of Concrete

5. Samples and Testing 14. Placing Concrete

6. Form work 15. Compaction

7. Reinforcing Steel 16. Bonding

8. Classes of Concrete 17. Slabs on Grades

9. Proportioning of Concrete Mixes 18. Slab Finishes

10. Joints 19. Curing

SECTION 2 M

CONCRETE

1. REFERENCE PUBLICATIONS: Some or all of the publications are referred to hereinafter and form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. The latest edition of referenced publications shall govern.

1.1 Federal Specifications:

SS-S-200D Sealing Compounds, Two-Component, & Am-3 Elastomeric, Polymer Type, Jet-Fuel

Resistant, Cold Applied.

SS-S-1401B ' Sealing Compound, Hot Applied, for Concrete and Asphalt Pavements.

SS-S-1614 Sealing Compound, Jet-Fuel Resistant, Hot

& Am-1 Applied, One Component, for Portland Cement and Tar Concrete Pavements.

TT-S-00227E Sealing Compound; Elastomeric Type, (COM-NBS) Multi-Component (for Calking, Seal-& AM-3 ing and Glazing in Buildings and

Other Structures).

CCC-C-467C Cloth, Burlap, Jute (orKenaf).

1.2 U.S. Army Corps of Engineers Handbook for Concrete and Cement:

CRD-C 300-77 Membrane-Forming Compounds for Curing Concrete.

CRD-C 621-82b Specifications for Nonshrink Grouts.

1.3 U.S. Department of Commerce, National Bureau of Standards Publication:

Product Standards:

PS 1-74 Construction and Industrial Plywood.

1.4 American Concrete Institute (ACI) Standard:

ACI 318-77 Building Code Requirements for Reinforced (Addendum; 1980 Suppl.) Concrete, with Commentary.

1.5 American Society for Testing and Materials (ASTM) Standards:

A 185-79 Welded Steel Wire Fabric for

2M-1

A 615-82

A 616-82a

A 617-82a

C 33-82

C 39-81

C 94-81

C 143-78

C 150-82

C 171-69 (R 1980)

C 192-81

C 231-82

C 260-77

D 98-80

D 1190-74 (R 1980)

D 1751-83

D 1752-84

E 11-81

E 96-80

Concrete Reinforcement.

Deformed and Plain Billet-Steel Bars for Concrete Reinforcement.

Rail-Steel Deformed find Plain Bars for Concrete Reinforcement.

Axle-Steel Deformed and Plain Bars for Concrete Reinforcement.

Concrete Aggregates.

Compressive Strength of Cylindrical Concrete Specimens.

Ready-Mixed Concrete.

Slump of Portland Cement Concrete.

Portland Cement.

Sheet Materials for Curing Concretei

Making and Curing Concrete Test Specimens in the Laboratory.

Air Content of Freshly Mixed Concrete by the Pressure Method.

Air Entraining Admixture for Concrete.

Calcium Chloride.

Concrete Joint Sealer, Hot-Poured.

Preformed Expansion Joint Fillers for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types).

Preformed Sponge Rubber and Cork Expansion Joint Fillers for Con­crete Paving and Structural Construction.

Wire-Cloth Sieves for Testing Purposes.

Water Vapor Transmission of Materials in Sheet Form.

2M-2

C 309-81 Liquid Membrane-Forming Compounds for Curing Concrete

2. GENERAL: Full cooperation shall be given other trades to install embedded items. Suitable templates or instructions, or both, shall be requested for setting items not placed in the forms. Hie concrete shall not be placed until the underground and/or embedded items have been inspected, tested for mechanical operation, and checked for accuracy of position and alignment as a Contractor quality control requirement.

3. MATERIALS:

3.1 Aggregate: Fine and coarse aggregate shall conform to ASTM

Designation C 33.

3.1.1 Coarse aggregate shall be well graded from the specified maximum size to No. 4. For concrete requiring larger than 1 inch maximum size aggregate, the coarse aggregate shall be provided in 2 or more fractional sizes and used in concrete in the proportions that will produce a combined coarse aggregate within the gradation limits shown for the appropriate grading range specified in ASTM Designation C 33.

3.2 Anchorage Items: Slots, inserts, clips, and other devices for anchoring masonry, wood, steel, and mechanical items to concrete shall be ot standard manufacture, and of approved types as required to engage and anchor the work specified under other sections.

3.3 Cement: Only one brand of each type of cement shall be used for exposed concrete in any individual structure. Cement reclaimed from cleaning bags or leaking containers shall not be used. Cement will be accepted on the basis of the manufacturer's mill certificate of compliance

with the specification requirements

3.3.1 Portland cement shall conform to ASTM C 150, type I or type II. The alkali content shall not exceed 0.6 percent.

3.4 Curing Materials:

3.4.1 Impervious Sheet Materials: ASTM Specification C 171, type optional, except that polyethylene film, if used, shall be white opaque.

3.4.2 Membrane Forming Curing Compounds: ASTM C 309, pigmented or nonpigmented as required. Nonpigmented compounds shall contain a fugitive

dye.

3.5 Form Coating: Nonstaining form oil or form release agent that will not deleteriously affect concrete surfaces nor impair subsequent

applications.

3.6 Form Materials: For unexposed surfaces, sound, tight lumber shall be used. Other materials may be used that will produce the specified joint

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requirements and finishes without adversely affecting the concrete surfaces.

3.7 Form Ties: Metal, factory-fabricated removable or snap-off, that will leave holes 1/2 to 1 inch in diameter and not less than 1-1./2 inches deep in surfaces to be exposed or painted and shall not project beyond the

concrete elsewhere.

3.8 Reinforcement:

3.8.1 Reinforcing steel shall be of the deformed type and conform to one of the following: ASTM Specification A 615, grade 40 billet or axle steel, grade 50 or grade 60 rail steel.

3.9 Tie bars: As specified for reinforcement bars.

3.10 Dowels: Plain carbon steel bars, minimum yield point of 40,000 p.s.i. for use in slabs on grade.

3.11 Water: Water shall be clean, fresh, and free of injurious amounts

of mineral and organic substances.

4. AIR-ENTRAINED CONCRETE: All exterior concrete shall have an air content by volume of 5 to 7 percent by ASTM Test Method C 231. Where air-entrainment is used in local commercial practice to improve the workability and placeability, the Contractor may use concrete having air content of 3 to 5 percent as determined in conformance with ASTM Test Method

C 231.

5. SAMPLES AND TESTING:

5.1 General: Testing except as otherwise specified herein shall be performed by the Contractor. All sampling, testing, recording and submittal of test results shall be in accordance with the Construction Control Manual.

5.2 Cement: Mill certificates of tests on cement shall be submitted.

5.3 Reinforcement: Mill certificates of tests on steel reinforcing bars

shall be submitted.

5.4 Concrete Cylinders: Number and frequency of test cylinders shall be in accordance with the Construction Control Manual. If the average strengths of three consecutive tests fall below the specified design strength, the Contracting Officer may require such changes in the proportions of the concrete mix as will be necessary to obtain the required strength. Cylinders required for formwork control tests shall be provided in addition to those otherwise required, and shall be field cured at least three-fourths of the proposed period before removal of forms.

6. FORMWORK: Forms shall be designed, constructed, and maintained so as to insure that after removal of forms the finished concrete members will have true surfaces free of offset, waviness or bulges and will conform accurately to the indicated shapes, dimensions, lines, elevations, and

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positions. Form surfaces that will be in contact with concrete shall be thoroughly cleaned before each use.

6.1 Design: Studs and wales shall be spaced to prevent deflection of form material. Forms and joints shall be sufficiently tight to prevent leakage of grout and cement paste during placing of concrete. Joints in forms shall be arranged vertically and horizontally to conform to the pattern of the design. Juncture of formwork panels shall occur at architectural lines, vertical control joints, including alignement with masonry control joints, and construction joints. Forms placed on successive units for continuous surfaces shall be fitted to accurate aliriement to assure smooth completed surfaces free from irregularities. lemporary openings shall be arranged in wall and column forms and where otherwise required to facilitate cleaning and inspection. Forms shall be readily removable without impact, shock, or damage to the concrete.

6.2 Concrete Surfaces to be Unexposed: Form surfaces that will be in contact with concrete shall be sound, tight lumber or other material

producing equivalent finish.

6.3 Coating: Forms for exposed or painted surfaces shall be coated with form oil or form-release agent before reinforcement is placed. The coating shall be a commercial formulation of satisfactory and proven performance that will not bond with, stain, or adversely affect concrete surfaces, and will not impair subsequent treatment of concrete surfaces depending upon bond or adhesion nor impede the wetting of surfaces to be cured with water or curing compounds. The coating shall be used as recommended in the manufacturer's printed or written instructions. Forms for unexposed surfaces, other than retained-in-place metal forms may be wet with water in lieu of coating immediately before placing of concrete, except that in cold weather with probable freezing temperatures coating shall be mandatory. Surplus coating on form surfaces and coating on reinforcing steel and construction joints shall be removed before placing concrete.

6.4 Removal of forms shall be in a manner to insure complete safety of the structure after the following conditions have been met. Where the structure as a whole is supported on shores, forms for beam and girder sides, columns, and similar vertical structural members may be removed after 24 hours, provided concrete is sufficiently hard not to be injured thereby. Supporting forms or shoring shall not be removed until structural members have acquired sufficient strength to support safely their own weight and any constructtion and/or storage load to which they may be subjected, but in no case shall they be removed in less than 7 days, nor shall forms used for curing be removed before expiration of curing period except as specified in paragraph CURING. Care shall be taken to avoid spalling the concrete surface or damaging concrete edges. Wood frames shall be completely

removed.

7. REINFORCING STEEL: ;

7.1 General: Metal reinforcement shall be free from rust scale or other coatings, and shall be accurately placed and properly secured in position by

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concrete blocks or metal chairs and by spacers. Bars shall be bent cold. Exposed bars intended for bonding with future extensions shall be protected from corrosion by an approved covering. All wire tie ends on reinforcxng shall point away from forms.

7.2 Reinforcement detailing and placement, including concrete protection for steel reinforcement, unless otherwise indicated, shall conform to ACI 318 and ACI SP-66. Where the requirements of ACI 318 conflict with SP-66, those of 318 shall govern.

7.2.1 Dowels in slabs on grade shall be installed at right singles to construction joints and expansion joints. Dowels shall be accurately alined parallel to the finished surfaces, and shall be rigidly held in place and supported during placing of the concrete. One end of dowels shall be oiled or greased.

7.2.2 Tie bars in slabs on grade construction joints. Tie bars shall finished surface, and shall be rigidly placing of the concrete.

shall be placed at right angles to be accurately alined parallel to the held in place and supported during

7.3 Shop Drawings: Shop detail drawings and placing drawings for reinforcing steel shall be submitted for approval in accordance with the requirements of SPECIAL CLAUSES. Material shall not be fabricated or delivered to the site before the approved shop drawings have been received by the Contractor.

8. CLASSES OF CONCRETE: Concrete of the various classes required shall be proportioned and mixed for the strengths given in the following table.

Specified design compressive Classes of concrete strength at 28 days

Pounds per square inch

AA 4,000

8.1 Usage: Concrete of the various classes shall be used as follows:

8.1.1 Class of concrete

8.1.1.1 Class AA concrete 1" maximum size aggregate shall be used for all concrete.

9. PROPORTIONING OF CONCRETE MIXES: Proportioning of Concrete Mixes shall be by weight.

9.1 Measurements:

9.1.1 Cement: One cubic foot of portland cement will be considered as 94 pounds in weight.

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9.1.2 Water: 1 gallon of water will be considered as 8.33 pounds.

9.1.3 Aggregate: Fine and coarse aggregates shall be measured by weight. Coarse aggregate shall be used in the greatest amount consistent with

required workability.

9.2 Corrective additions to remedy deficiencies in aggregate gradations shall be used only with written approval. When such additions are permitted, the material shall be measured separately for each batch of

concrete.

9.3 Determination of Minimum Cement Content Allowable: 'The strength quality of the concrete proposed for use shall be established by tests made in advance of the beginning of operations using consistencies suitable tor the work and shall be conducted in accordance with ASTM C 94. Previously, established tests will be acceptable provided the tests were during the last two years. Trial design batches and testing shall be the responsibility of the Contractor. Specimens shall be made and cured in accordance with ASTM Standard C 192 and shall be tested m accordance with ASTM Standard C 39. Prior to commencing operations, the Contractor shal furnish a statement to the Contracting Officer giving the water-cement ratio and weights (dry) of the fine and coarse aggregates and cement that he proposes to use in the manufacture of each class of concrete. This statement shall be accompanied by test reports including the date the tests were performed and other information such as :strengths, consistency, mix data of trial mixes, and gradation of both the fine and

coarse aggregates.

9.4 Slump Test: In the field, consistency shall be determined in accordance with ASTM Test Method C 143. Slump for concrete shall be 2 to 3.5 inches for slabs-on-grade and general construction, and 3 to 4.5 inche

for reinforced walls less than 10 inches thick.

10. JOINTS: No reinforcement, corner protection angles, or other fixed metal items shall be run continuous through joints containing expansion-joint filler, through crack-control joints m slabs on grade, or through joints between slabs on grade and vertical surfaces. Reinforcement shall be interrupted, 2 inches clear each side, at crack-control joints.

10.1 Premolded Expansion Joint Filler: Edges of exposed concrete slabs along expansion joints shall be neatly finished with a slightly rounded

tool.

11. INSTALLATION OF ANCHORAGE ITEMS: Anchorage items, including slots, inserts, sleeper clips, bolts, dowels, and other similar devices, shall of sufficient number and size, and so located as to insure anchorage

sufficient for the purpose intended.

12. PREPARATION FOR PLACING: Water shall be removed from excavations before concrete is deposited. Subgrade for concrete slabs on fills or on natural grade shall be prepared as shown on drawings. Hardened concrete,

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debris, and other foreign materials shall be removed from the interior of forms and from the inside of mixing and conveying equipment. The reinforcement shall be made secure in position, inspected an.1 approved before placing concrete. Runways for buggies or wheelbarrows shall not be

supported on reinforcement.

13. BATCHING, MIXING, CONVEYING OF CONCRETE: Concrete of the ingredients and design mixes hereinbefore specified shall be measured, batched, mixed and conveyed as described in ASTM C 94.

14. PLACING CONCRETE: Unless otherwise specified, placing of concrete shall conform to Chapter 5 of American Concrete Institute Standard ACI 318. Concrete having attained initial set shall not be used in the work. Concrete shall not be dropped freely more than 5 feet in unexposed work, or more than 3 feet in exposed work. Unless otherwise approved, concrete shall be mixed and placed only when the temperature is at least 35 degrees F. and rising. When placed on dry soil or pervious material, waterproof paper shall be laid over the surfaces that are to receive the concrete.

15. COMPACTION: Concrete shall be placed in layers not over 12 inches

deep. Each layer shall be compacted.

16. BONDING: Before depositing new concrete on or against concrete that has set, the surfaces of the set concrete shall be thoroughly cleaned so as to expose the coarse aggregate and be free of laitance, coatings, f°reiJJ matter, and loose particles. Forms shall be retightened. The cleaned surfaces may be moist but shall be without free water when concrete is

placed.

17. SLABS ON GRADE:

17.1 Capillary Water Barrier: Capillary water barrier under slabs on grade shall consist of clean, crushed rock. The maximum particle size shall be 1-1/2 inches and uniformly graded to the No. 4 sieve size with not more than 5 percent passinsg the No. 4 sieve size. The capillary water barrier shall be placed directly on the subgrade meeting density and elevation requirements. The barrier shall be 6 inches thick and constructed in one layer compacted with a minimum of four passes of a hand operated plate- ype

vibratory compactor.

17.2 Placement: Concrete shall be compacted, screeded to grade, and prepared for the specified finish. Concrete shall be placed continuously so that each unit of operation will be monolithic in construction. Concrete shall be placed in alternate paving lanes as limited by expanison and construction joints and with contraction joints to provide panels of size specified. Crack-control joints shall be expansion, contraction, or construction joints. Joints shall be located as shown. Forms shall remain in place for at least 12 hours after concrete placement.

17.3 Contraction joints shall be formed by the insertion of PVC inserts

in the plastic concrete.

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18 SLAB FINISHES: The ambient temperature of spaces being finished shall ie not less than 50 degrees F. Finished floor and slab surfaces shall be true plane surfaces with no deviation in excess of 1/8 inch when tested wi tha 10-foot straightedge. Surfaces shall be Pitched tnjfcains. The dusting of finish surfaces with dry materials or additions of water to

concrete surfaces will not be permitted.

18 1 The concrete shall be screeded and floated to the required finish level with no coarse aggregate visible. After the surface moisture has disappeared surfaces shall be steel-troweled to an even, smooth finish, pie troweled surfaces shall be broomed with a fiber-bristle brush m a direction

transverse to that of the main traffic.

19. CURING: Immediately after placing or finishing, concrete surfaces shall be protected against moisture loss for not less than 7 days. Curing Sail S S^lisheS by one of the following methods or oonb.natxon thereof, an approved, except that all slabs on grade shall be moist cured

for the first 24 hours after placement.

19 1 Moist Curing: Unformed surfaces shall be covered with burlap or other approved fabric mats kept in intimate contact with the surface, or with sand, and shall be kept continually wet. Where formed surfaces are cured in the forms, the forms shall be kept continually wet. If the are removed before the end of the curing period, curing shall as on unformed surfaces that will be unexposed m the finished work and

shall be in two layers.

19.2 Impervious-sheet Curing: All surfaces shall be thoroughly wetted with a fine spray of water and be completely covered with waterproof paper, S Xeih'eS sheeti^, or with polyethylene-coated burlap havrng the burlap thoroughly water-saturated before placing. Covering shall be 1 with light colored side up. Covering shall be lapped not less than 12 inches and securely weighted down or shall be lapped "ot ess than 4 inches and taped to form a continuous cover with completely closed joints, bheets shallbe weighted to prevent displacement or billowing fro. winds.

Coverings shall be folded down over exposed edges . °L * Wed if tears approved means. Sheets shall be immediately repaired or replaced if tears

or holes appear during the curing period.

19.3 Membrane-forming curing compound shall not be used on are to receive any subsequent treatment that depends upon

bonding to the concrete. Membrane-forming curing compound shall be applj

in a two coat, continuous operation using not less than 1 a a square feet of surface for each coat. The second coat shall PP direction approximately at right angles to the direction of the first coat. Surfaces subjected to heavy rainfall within 3 hours after d

applied^ or damaged by const,*%£££*££ 'LSEE-E-tai

curing co^Sldi are permitted, permanently exposed surfaces shall be cured

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by use of a clear-type membrane-foraing curing bon-P™""1

fugitive dye. Where clear-type curing expounds are ^'fo*h*h°°™rX surfaces shall be shaded from the direct rays of the sun for the cur ng period. Surfaces shall be kept free of foot and vehicular traliic during

the curing period.

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SECTION 2N

SAMPLING, DEMOLITION AND REMOVAL OF CONCRETE STRUCTURES

INDEX

1. General Requirements 3. Sampling

2. Related Requirements 4. Demolition, Removal and Disposal

1. GENERAL REQUIREMENTS

1.1 The Contractor shall sample and remove all concrete structures located in the Exclusion Zone.

1.2 Sampling and analysis shall be performed according with this Section and Section IK.

1.3 Dimensions of concrete structures shown on the drawings are approximate only. Contractor is responsible for verifying dimensions shown and obtaining all new : dimensions necessary for bidding, demolition and

removal.

2. RFT.ATET) REQUIREMENTS

Section ID: Summary of Work Section IK: Chemical Data Quality Management Section IT: Air Monitoring Section 2A: Site Preparation Section 2E: Sampling and Analysis

3. SAMPLING

3.1 Sampling Locations. At least one sample shall be collected from each wall or slab. Sample shall be collected at the approximate center of the largest discolored area of each wall or slab. If a wall does not have discolored areas, the sample shall be taken on the vertical centerline of the wall six inches above the ground or base slab. If a slab has no discoloration, the sample shall be taken at the geometric center of the slab. The exact sample locations shall be approved by the COR.

3.2 Sample Collection Procedure. Concrete samples shall be full thickness cores as described in Section IK. Concrete coring shall be done in accordance with ASTM C 42-84a, Section 4, Volume 402 "Standard Method of Obtaining and Testing Drilled Cores and Sawed Beams of Concrete", using a diamond drill.

3.3 Preparation of Sample. Concrete sample preparation shall be in accordance with ASTM C85-66, Section 4, Volume 4.02 "Standard Test Method

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for Cement Content of Hardened Portland Cement Concrete." Reinforcing steel

shall be removed from the sample before laboratory analyses. 1

3.4 Analyses of Concrete Samples. Each concrete sample shall be analyzed as described in Section IK.

4. DEMOLITION. REMOVAL AND DISPOSAL

4.1 Demolition and Removal. The use of explosives shall not be permitted. Demolition and removal methods are left to the discretion of the Contractor with the approval of the COR. At least 10 working days prior to concrete demolition, the Contractor shall submit the details of the demolition operations, showing the methods and sequence of demolition and removal and equipment to be used, to the Contracting Officer for approval. Concrete is reportedly heavily reinforced but the size and spacing of the reinforcement is not known. :

4.2 Disposal of Demolished Concrete. If laboratory results indicate that any slab or wall is contaminated above acceptable Threshold Limit Concentrations as defined in the California Administrative Code, Title 22, all concrete material from that wall or slab shall be disposed at an off-site hazardous waste disposal facility. If the results are below CAC Limits, the Contractor shall dispose of the concrete from that wall or slab at a Class III landfill approved by the COR. It is the Contractor's responsibility to prevent mixing of contaminated concrete material with material that is not contaminated. In the event of such mixing of contaminated material with non-contaminated material, all material shall be considered as contaminated and shall be disposed at an off-site hazardous waste disposal facility.

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