Pipeline Specifications · blow down operations, blowing or leaking gas problems, or hot (fire)...

Pipeline Specifications

Version: 2Up Date: 5/22/2017

SPECIFICATIONS

New Mexico Gas Company

SPECIFICATION LIST

Specification No. 001 - Pipeline Installation

Specification No. 002 - Gas Line Abandonment

Specification No. 003 - Cast In Place Concrete

Specification No. 004 - Chain Link Fence Specification No. 005 - Painting

Specification No. 006 - Reseeding Right of Way

Weld Procedure Specifications

SPECIFICATION NO. 001 - PIPELINE INSTALLATION

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1 GENERAL

1.1 Scope of Work:

1.1.1 This specification provides details necessary to install buried steel pipelines.

1.2 Submittals:

1.2.1 Submit to Company a detailed traffic control plan detailing routes for construction equipment as well as routes for detoured vehicular and pedestrian traffic.

1.2.2 Submit to Company a detailed dust and noise abatement plan.

2 CODES, STANDARDS AND RELATED SPECIFICATIONS

2.1 The following codes and standards apply to this specification. The latest edition of each publication shall apply:

2.1.1 API STD. 1104 - “Welding Of Pipelines and Related Facilities”.

2.1.2 ANSI/ASME B31.8 - “Gas Transmission and Distribution Piping Systems”.

2.1.3 U.S. Department of Transportation, 49CFR Ch. 1, Part 192, “Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards”.

2.1.4 All applicable OSHA General Industry (29 CFR 1910) and Construction Regulations (29 CFR 1926) including: OSHA 1926.650, Subpart P - “Excavations, Trenching, and Shoring”.

2.1.5 Weld Procedure Specifications

2.2 In all cases, the Contractor shall install pipe in accordance with permits and requirements. See Permit Section of this Contract.

3 GENERAL REQUIREMENTS

3.1 Contractor shall be required to construct buried steel pipelines, and modify valve and meter stations. The Work will include route right of way preparation, site grading, ditching, off-loading pipe delivered, stringing pipe along right of way, bend and set up, welding, protective


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coating, lower-in, backfill, hydrostatic test and de-water, corrosion control, clean-up, and painting.

3.2 Company will provide a representative in accordance with the relevant clauses to ensure proper completion of the project. This provision shall in no way limit the Contractor’s responsibility to supply his own supervision and inspection to execute the job in a competent and satisfactory manner.

3.3 The Contractor shall perform all work in compliance with present-day natural gas standards and practices, which include the latest edition of Part 192 of Title 49 of the Code of Federal Regulations, applicable OSHA regulations and ASME/ANSI/API standards and specifications. Contractor shall also be Operator Qualified per NMGC specifications to perform tie-in installations.

3.4 The Company shall isolate and blow down piping to be removed or worked on prior to the Contractor starting this work. The Company shall pressure up or place into service the new piping after the Contractor has prepared the pipeline for service. The Contractor will be required to work over, under and around existing loaded gas pipelines. No extra will be paid to the Contractor for standby time due to stop-off operation, blow down operations, blowing or leaking gas problems, or hot (fire) conditions. No cutting will be allowed into existing pipeline systems without a Company Representative on location.

3.5 Contractor should expect some leaking gas and fire conditions while making any required modification to the existing pipelines. The Contractor must provide the Company a 48-hour notice prior to any construction activities on the existing pipeline system.

3.6 The Company Representative can require removal of Contractor personnel at any time due to probable cause.

3.7 Right of Way:

3.7.1 Contractor shall provide full compliance with the various right of way permit requirements that are a part of this package.

3.7.2 Right of Way for the purpose hereof is defined as a strip of land typically not more than 50 feet in width except in those locations where Company’s easements for right of way or permits restrict it


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to a lesser or larger width or the circumstances at particular locations necessitate such restriction. Additional right of way can be provided at arroyo and road crossings and other special installation locations to allow Contractor ample work area as specified by the company per project conditions.

3.7.3 The Drawings indicate the general route of the pipeline and information regarding the location, depth, and nature of all known pipelines, utilities, cables, underground hazards, obstructions, and permit requirements, but the Company does not guarantee this information to be totally correct or complete. It shall be solely the responsibility of Contractor to determine the location, depth and nature of all intersecting pipelines, drains, wires, cables, foundations, dams, or any other structures in advance of his operation, and to exercise adequate and proper precautions in all of his operations in order that none of the said pipelines, other structures or their contents, become damaged, injured, or destroyed due to any of his operations or those of his agents, servants, employees, or Lower Tier Subcontractors. The New Mexico One Call system shall be utilized by the Contractor to locate foreign line crossings and other utilities. The New Mexico One Call telephone number is 811. When pipeline construction is adjacent to existing systems, the Contractor shall, at his expense, expose the existing systems as required to verify their locations. Other pipeline operators and utilities may want their representatives on location when work is being done near their facilities. Advance notification and coordination with other utilities impacted by this work shall be the responsibility of the Contractor.

3.7.4 The full cost of damage to or repair of said pipelines and structures and of loss of or injury to their contents, if caused directly or indirectly by Contractor’s operations or negligence, shall be borne by Contractor.

3.7.5 Where necessary, because of right of way difficulties or unforeseen obstruction, Company reserves the right to make minor changes in the location of the pipeline prior to construction. Such changes shall not alter the terms of these specifications or of the Contract.


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3.7.6 Contractor shall not make any changes in the locations of the pipelines or appurtenances, either staked or otherwise indicated by Company, without approval of Company.

3.7.7 Before entry is made to commence work on any land, the Contractor shall contact Company to advise as to times and points of entry and to confirm any fencing or other requirements.

3.7.8 Contractor operations must be planned by the Contractor from the onset to cause the least disturbance to owners and occupiers of the property along the pipeline route. Contractor shall pay for all damage or repair of public or private property. Contractor shall comply with all requirements of landowners Right of Way Assignment or Easement. Contractor or equipment shall not trespass nor enter upon other private property or restricted public areas without express permission of Company in performance of the work or in access to or from the latter. Contractor shall exercise extreme care in the operations to prevent damage to public roadways and to developed property, both public and private, and to minimize damage to all property at all times.

3.7.9 Company shall provide all necessary rights of way and Federal, State and County highway crossing permits, which shall be necessary for construction of the pipeline.

3.7.10 Company shall provide initial centerline and right of way staking for the pipeline route. If acts of Contractor damage the original stake line to the extent that re-staking all or part of the line is required, Contractor shall arrange for re-staking at Contractors expense.

4 CLEARING AND GRADING OF RIGHT OF WAY

4.1 Contractor shall clear and grade right of way of sufficient width for hauling and stringing pipe and other material. Contractor shall be responsible for any damages outside of right of way limits. Contractor shall perform all necessary grading at road, river, stream, and gully crossing and at other locations where needed to permit the passage of equipment, cars, and trucks owned by Contractor or Company. Contractor will be responsible for disposing of unsuitable material


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unearthed in the clearing process such as rock, debris, etc. to the satisfaction of Company Representative.

4.2 Any area cleared within the right of way must be re-seeded per applicable specifications by the Contractor.

4.3 Where right of way passes over or through, ditches, along public highways, or similar valuable properties, then only that amount of right of way necessary for actual ditching and laying of pipe shall be used, and work shall be performed in such a manner as to minimize damages to the greatest extent. Contractor is responsible for entering and existing ROW in such a manner as to cause the lowest possible impact to surrounding properties or culture and biological resources. Contractor shall be informed of all the reclamation requirements of all local, state, and federal authorities. Proper disposal shall lie solely in the hands of the Contractor.

4.4 Temporary bridges, culverts, roadways and other temporary facilities shall be constructed at the Contractor’s expense as required to provide for the passage of all equipment necessary for construction operation. With prior approval of Company, Contractor shall widen any access road for the passage of materials or equipment as may be required. The Contractor shall be responsible for the restoration and reinstatement of all accesses to the satisfaction of Company.

4.5 Fences - Before construction operations commence, the Contractor shall make openings through each field boundary and fence intersecting the right of way. However, no fences shall be cut without the approval of Company. The openings shall be made to minimize disturbance to existing boundaries and fences. They shall also be provided with shockproof temporary fencing, including properly constructed gates of sufficient width to provide for access and unrestricted passage of construction equipment and materials. All fences crossed by the Company right-of-way shall be kept intact by installing “H” frames on each side of the fence where it crosses the right-of-way. All wire shall be stretched and securely attached to the “H” frames when the fence is opened for right-of-way. A temporary gate shall be installed and kept closed at all times while work is in progress except for passage. Upon completion of the job, the permanent repair or replacement of the fences in the area of the right-of-way must be made to the satisfaction


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of the landowner and Company. Company must approve basic design for temporary gates and fences prior to installation. Contractor shall replace or repair all fencing disturbed during construction.

4.6 Security - The Contractor shall be responsible for the security of the right of way, by both day and night. This shall include keeping gates closed at all times during performance of the work and preventing persons and livestock from falling into open excavations. The Contractor shall provide watchmen and erect temporary shockproof fencing as necessary, to enforce the requirements for the closing gates and for maintenance of the above-mentioned security. The Contractor shall be responsible for any damage to persons or livestock and damage caused by livestock due to open gates and lack of or improper installation of temporary gates and/or fences.

4.7 All grading near trenches or other excavations shall be controlled to prevent surface water from flowing into the excavations or damaging other property. Any water accumulated in the excavations shall be removed by pumping or by other approved methods at no added expense to the Company (this includes, but is not limited to, seepage water from irrigation ditches, wash areas, runoff water, snow melt, etc.)

5 UNLOADING, HAULING AND STRINGING

5.1 Contractor shall furnish all labor, equipment and transportation required to haul and string on right of way all material required for the work. Contractor shall protect and indemnify Company against any charge for demurrage or other charges incident to the failure to promptly unload.

5.2 When the Contractor accepts custody of the pipe, record will be made by both Company and the Contractor as to the number of damaged bevels and the number of defective joints. At the direction of Company, the Contractor shall repair damaged material.

5.3 The hauling and stringing of pipe and other materials on the right-of-way shall be performed in such manner as to prevent damage to materials. Pipe shall not be unloaded by rolling from truck.

5.4 Stringing of pipe on right of way shall be done in such a manner to cause least interference with the normal use of the land crossed, and gaps shall be left at intervals to permit use of land and passage of farm stock across the right-of-way. Contractor shall prevent entrance of dirt or debris into


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pipe during stringing, and pipe shall not be dragged behind tractors or trucks. Pipe shall not be placed on the ground but shall be raised on oak skids provided by the Contractor. Contractor shall install 7mil thickness or greater trash bags over the ends of each joint of pipe.

6 DITCHING

6.1 Equipment and General Methods:

6.1.1 Contractor shall use such equipment and methods as may be required to excavate the ditch to the stake line established. All ditching and other excavations shall be in compliance with applicable portions of the Code of Federal Regulations -Title 29, Subpart P, “Excavation, Trenching and Shoring”, and all Local, County, State and Federal regulations in effect. It is the Contractor’s sole responsibility to conform to OSHA requirements including utilization of “Competent Personnel” on the job site.

6.1.2 The Contractor shall be fully and solely responsible for the suitability and safety of the Contractor’s equipment used on the job. No construction equipment shall be used which may be unsuitable, unsafe, or liable to cause damage to the job or damage to existing buildings, plants or property. Without lessening the absolute responsibility of the Contractor in regard to such construction equipment, the Company Representative shall have the right to inspect such construction equipment. If it is unsuitable, it shall not be used on the job and shall be replaced at the Contractor’s expense.

6.1.3 The Contractor shall acquire all pipeline locations and other information necessary to avoid utility line, pipeline, and structure damages and all other property damage. Conflicts with the design or placement of the new gas line shall immediately be brought to the Company Representative’s attention. The Company Representative will determine where the new gas piping and appurtenances are to be located based on existing pipeline, utility and structure locations as determined by the Contractor at the time of construction.

6.1.4 The Contractor shall have on hand and shall utilize at all times during construction an acceptable pipe locator in good working


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condition, as approved by the Company Representative, to supplement other locates and thereby aid the Contractor in his digging.

6.1.5 During construction, the Contractor may, with the Company’s approval, field adjust the location of the gas line within the approved corridor as necessary to achieve separation from underground utilities, protected vegetation, cultural locations and subsurface rock structures with the objective of reducing the cost and time required to complete the work. The Contractor to the extent practical shall replace the gas line and trench no closer than 5 feet to the boundary of the 50-foot (or other width as specified by company) approved right of way. Minor adjustments in elevation or grade of the pipe are expected in order to avoid conflict with existing utilities.

6.2 Ditch Specifications:

6.2.1 Unless specifically set forth herein, all trenches shall be cut to line and grade sufficient to provide a minimum cover of 5 feet from the top of the pipe in areas outside the right-of-way limits of a State or U.S. Highway, 7 feet across all drainage areas, canals or ditches and 6 feet within the right-of-way of a State or U.S. Highway.

6.2.2 When the trench is located parallel to and less than 5 feet from, or crosses a borrow or drainage ditch, the depth of cover shall be measured from the bottom of said ditch and top of pipe.

6.2.3 In areas to be graded after installation of the pipeline, the depth of cover shall be 5 feet outside the right-of-way limits of a State or U.S. Highway and 7 feet within the right-of-way of a State or U.S. Highway from the finish grade line or the existing grade, whichever is greater.

6.2.4 In areas where the land will later be plowed over or which erosion control ditches might later be dug, the depth of cover shall be a minimum of 6 feet.

6.2.5 Depth of cover shall be measured from the downhill (lowest section) of the trench sides.


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6.2.6 The minimum width of the trench (normal soil) shall be the diameter of the pipe plus 4 inches for the pipe sizes up to and including 6-5/8” OD. For larger pipe, the width of the trench shall be a minimum of 2 times the outside diameter of the pipe. Pipe greater than or equal to24”OD, the trench width shall be the pipe OD plus 2 feet..

6.2.7 Ditch shall at all times be prepared ahead of the bending and laying operations. The finished ditch shall be substantially free of water and shall be completely free of roots, hard clods, stones, rocks and other hard objects which might damage the pipe coating and shall be trimmed so as to support the pipe throughout its whole length. Wood chips, skids, trash, branches and other debris shall be removed from the trench before lowering the pipe.

6.2.8 If the line traverses sand or sand dunes, the ditch shall be cut to a sufficient depth to provide a minimum cover of 5 feet from the top of the pipe.

6.2.9 The bottom of the ditch shall be cut to a uniform grade to ensure that the pipe is evenly bedded throughout its length. At overbends and sidebends, the Contractor shall excavate the ditch to allow proper clearance between the inside bend of the pipe and the bottom side of the ditch and both sides of the sidebends.

6.2.10 The ditch shall be graded to pass under all pipelines, ditches, canals, streams, or any other obstruction specified by Company Representative. The Contractor shall refer to the alignment drawings and permits for additional crossing information. The ditch or pipeline grade established when passing under a road will be maintained in a straight line for a minimum of 20 feet on either side of the crossing unless prohibited by right-of-way restrictions. The ditch shall be graded to allow a minimum clearance of 18 inches or greater if required by foreign pipeline company policies, between the new pipeline and other pipelines or underground structures. Where practical the new pipeline shall be installed below such facilities and/or structures.

6.2.11 Alongside streets or roadways, material excavated from the trench shall, wherever possible, be piled along the street or roadway (traffic) side of the trench.


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6.2.12 Except as noted above, material excavated from the trench shall, wherever possible, be piled along the upstream side of the trench.

6.3 Rock Excavation:

6.3.1 Unless specifically stated to the contrary in the bid package or Contract, no extra payment will be allowed for rock or padding. Removal of rock and padding from the ditch will normally be included in the basic contract price.

6.3.2 In the event extra payment for rock excavation is indicated, Company shall pay the Contractor for rock removal from the trench of all material up to the minimum trench width as specified. The said payment shall be computed on a cubic yard basis by multiplying the Contractor’s price per cubic yard by the actual cubic yardage removed excluding the yardage removed outside the specified minimum trench width.

6.3.3 Trench rock requiring sawcut removal is defined as igneous, metamorphic and sedimentary rock which cannot be excavated by an Excavator/Backhoe equipped with rock teeth and having a minimum stick crows force and bucket curling force of 25,000 pounds as rated by SAE Standard J1179. The Caterpillar Model 225 Excavator is a typical example of equipment with these capabilities.

6.3.4 Rock trench quantities shall be determined by a volume calculation of length x width x thickness. The length shall be verified by field measurement and agreed upon by the Contractor and the Company Representative. The width shall be calculated as the width defined in section 6.2.6. The thickness shall be the full trench depth as required by the plans and specifications, minimum of 5 feet of cover if not otherwise specified by company, less the overburden depth as agreed upon by the Contractor and the Company. If a rock layer is encountered that is less than the total ditch depth, only the actual thickness of the rock layer will be used in the rock volume calculation.

6.3.5 The method used for the removal of rock shall meet with the Company’s approval. The method selected shall meet with all


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regulations or ordinances in effect in the area and shall have due regard for other utilities that may be in the vicinity.

6.3.6 When ditching requires rock excavation as outlined above, the Contractor shall be responsible to provide padding soil or rock shield material. The soil padding shall be made up of clean, dry, Company approved dirt. The padding shall have a minimum layer of 6” below and to each side of and on top of the pipe after lowering in. The cost of the padding soil where applicable as outlined in the contract should be included in the cost of cubic yard of rock removal.

6.4 Shoring:

6.4.1 Where required by regulations or Company, ditches shall be shored, benched or sloped at Contractor’s responsibility to prevent cave-ins and protect workmen. It is the Contractor’s sole responsibility to conform to OSHA requirements under 29 CFR 192 “Construction Industry Regulations” including utilization of “Competent Personnel” on the job site.

6.5 Spoil Banks and Drainage:

6.5.1 The spoil banks from the ditching operations shall not be allowed to fall on to the pipeline. No loose debris or foreign matter shall be permitted to mix with the soil excavated from the ditch. Spoil piles shall be arranged in such a manner that fence gates will function properly.

6.5.2 Where spoil banks are formed, the Contractor shall take all necessary precautions to avoid flooding and shall provide drainage gaps as required.

6.6 Dewatering:

6.6.1 Contractor shall be responsible for removing any water that interferes with maintenance of ditch or installation of piping whether source of water is rainfall or seepage of natural ground water.

6.6.2 The Contractor shall provide and install all necessary equipment, at its expense, for removing liquid from and around the excavation


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and shall dispose of liquid in such a manner as to cause no nuisance, harm, damage or environmental degradation.

6.7 Additional Depth of Ditch:

6.7.1 Where ditching across or adjacent to roads, drainage ditches, creeks, ravines, and other water courses, and at points where the contour of the earth may require extra depth, Contractor shall at no additional compensation, excavate to such additional depth as may be necessary to meet the requirements of Company, landowner, and any public or private authority having jurisdiction. The ditch or pipeline grade established when passing under a creek or draw will be maintained for a minimum of 20 feet on either side of the crossing, unless prohibited by right-of-way restrictions or rock as determined by Company or as indicated on site specific drawings.

6.7.2 Company desires to reduce to a minimum the required number of bends to lay the pipe to conform to the contour of the ground and maintain a normal covering. This shall be accomplished by cutting the ditch slightly deeper at the approaches to road crossings and small watercourses. It is Company’s intention that Contractor shall eliminate unnecessary bends by excavating the ditch at various depths.

6.7.3 In the event that the Company supplies hot induction bent pipe, the Contractor may be required to over-excavate or contour the ditch bottom in order to install the induction bent pipe such that no stress is created through the piping section. The contractor shall re-contour the ditch bottom to provide for an acceptable installation at no additional expense to the Company.

6.8 Crossing Streams, Arroyos or Drainage Ditches:

6.8.1 All streams, arroyos, ditches, open drains or water courses encountered in service during construction shall be handled per the terms of specific Federal, State and NMGC Environmental permits. Permit stipulations will provide input as to how to maintained in effective service condition during construction, if necessary, by use of a temporary culvert or flume to transfer water across the pipeline ditch. The culvert or flume shall be in a


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position for a minimum period, and cause the least possible inconvenience to the ditch user.

6.8.2 After the pipeline has been laid and the backfill is completed, the Contractor will ensure that the stream or ditch is immediately restored as near as possible to its original condition or in accordance with applicable permit conditions and detail drawings.

6.9 Temporary Bridges:

6.9.1 Should it be necessary for the ditch to be excavated where it is desirable for the owner or occupier to have passageway across the ditch, the Contractor shall provide safe, temporary bridges or provide other safe means of crossing the ditch. Crossings shall also be provided at all well-defined trails to permit free access of livestock to watering and feeding.

6.9.2 Entrances to businesses, public areas, or private homes shall not be obstructed by dirt, equipment, or other materials.

6.10 Protection of Excavation:

6.10.1 The Contractor shall protect all trenches or ditches at road crossings and water crossings, at all times by signs, barricades, flagging, guard rails, lanterns, flares, and other equipment, and by any and all means required by law and by an ordinarily prudent person to protect employees of the Contractor, employees of Company, and third parties from injury either to person or property. The Contractor shall comply with any County, State or Federal regulations relative to the placing of danger signals, lights or flares. In the absence of governmental regulations, the Contractor is to place danger signs visible during daylight and yellow lanterns or flares visible during darkness 300 feet from excavated road crossings or borings in both directions of traffic. Danger signs must be legible at 200 feet during the day and night. Contractor shall arrange to complete and fill road crossings during the day in which they are begun to avoid hazards of night travel. The contractor shall flag all open trenches at the end of each workday and restrict access to the right of way.


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6.10.2 Contractor shall notify other companies and facility owners 48 hours prior to exposing or crossing any utility or pipeline through the use of the New Mexico One Call System. Contractor shall locate or confirm the location of buried utility cables, pipelines and foreign pipeline facilities with the aide of other company and facility owner personnel. All excavation shall conform to State, County or Federal regulation. When the horizontal and vertical location and the physical size of these facilities has been confirmed, the Contractor will normally be allowed to mechanically excavate within 3 feet of such facilities. The Contractor will be responsible for the protection of utilities and foreign pipeline facilities and liable for any damages, which result from construction. Contractor shall replace or repair to original condition any utility, pipeline, or facility that is damaged during construction. Company may require manual excavation of any location where, in the opinion of the Company Representative, the job warrants such methods. Contractor shall notify Foreign Company 48 hours in advance to excavate should they want “spotting” on site.

6.10.3 Contractor shall be responsible for determining location of and is to take due precautions to avoid damage to drain tile, pipelines, telephone lines or cable or other properties of Company or others, crossing or adjacent to the pipeline being constructed. Contractor shall accept final liability for all expenses of repairing, loss of commodity, and loss of revenue caused by damage to such pipelines, telephone lines, or other property. Contractor shall notify Company Representative immediately of any damage to pipelines, telephone lines, cables, any utility or any property.

6.10.4 There must be at least 18 inches vertical clearance between the pipeline being laid and any other existing utility or structure unless clearance is waived by the company and the foreign pipeline company due to rock or safety reasons. Additional clearance shall be provided, if possible, if requested by the foreign pipeline company.

6.10.5 When it is impossible to obtain sufficient clearance to satisfy the above requirements, double wrap the gas pipeline at least 3 feet in all directions, on each side of the close contact area. In no case


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shall pipeline be laid in direct contact with any underground structure. Layout all trenches a minimum of 10 feet from any parallel pipelines, utilities, etc. In the case of electric overhead power lines, this minimum horizontal separation should be equal to or greater than the height of the power lines above the ground surface. The Contractor shall consult with the CP Inspector for additional requirements.

7 STREET, HIGHWAY, CANALS AND RAILROAD CROSSINGS

7.1 Unless otherwise indicated on the Drawings or construction plans, the method of crossing unpaved streets, roads and highways shall be by open cut. Crossing of paved streets, highways and canals shall be made by boring whenever specified. The crossing of all railroads shall be by boring. The method of boring shall be in accordance with the specifications of the agency having jurisdiction over the street, canal, road, highway or railroad. In the event of a boring installation, care shall be exercised to ensure the paving or other above bore feature is not damaged during the operation. All crossings shall be made in such a manner as to cause a minimum interruption to the normal use of the street, road or highway. The Contractor shall, at his own expense, replace, or cause to be replaced, any paving or other above bore feature damaged during the boring operation.

7.2 All streets and highway crossings must first receive the approval of the governmental agency having jurisdictions before the acceptance of the crossing by Company.

7.3 The construction of all street and highway crossings designated by Company, including all details incident to the installation of such crossings, shall be in accordance with the specifications as may be required by the State Highway Department, or any other authority having jurisdiction and such general specifications herein as any be applicable. Care shall be taken not to block traffic while such crossings are being installed. Contractor shall be responsible for any cost incurred by blocking highways and for damage to highways. Contractor shall bear the responsibility of scheduling the bore installation activities with applicable County, State, or Federal regulating arm.

7.4 The Contractor shall not start work on any railroad or highway crossing before obtaining definite approval from Company.


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7.5 Open Cut

7.5.1 When open ditch crossing of paved streets, roads or highways is indicated on the drawings or construction plans, the Contractor shall arrange for and pay for the permanent repairs to street surface that has been removed. Contractor shall make temporary blacktop repairs if required by the governmental agency having jurisdiction.

7.5.2 If arterial streets and highways are to be crossed by open cut, provisions shall be made for the maintenance of at least one lane of traffic. Street crossings and highway crossings shall have a minimum of 6 feet of cover. This minimum depth shall be measured from the lowest point on the crossing profile, and from the depth so established so the elevation of the pipeline shall not be permitted to increase throughout the crossing regardless of type of earth and/or rock encountered. In all cases, the depth of cover shall meet the permit requirements.

7.5.3 Installation of pipe shall be made as soon after the opening of the crossing as possible. Backfilling under rail crossings, highway and highway shoulders shall be done as specified by the governmental or private agency having jurisdiction.

7.6 Contractor shall review traffic patterns in and around the job site. Contractor shall furnish any required road signs, flashers, and equipment warning signs. All equipment and vehicles shall be operated in a legal and safe manner. Contractor shall submit to Company for approval a traffic control plan detailing the types and amounts of construction traffic, road closings, traffic patterns, etc.

8 CREEK, STREAM, MINOR RIVER, ARROYO AND RAVINE CROSSING

8.1 Unless otherwise specified or as directed by company, pipe across arroyos, washes and river crossings shall have a minimum cover of 7 feet and may be anchored with concrete blocks.

8.2 All labor and material for such crossings shall be furnished by Contractor without additional compensation, unless specifically stated in the Contract.

8.3 If concrete block anchors are specified, the pipe shall be anchored to such blocks on each side and in the middle of the wash. If the wash is


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over 50 feet wide, additional concrete anchors shall be placed between the extreme anchors at intervals as shown on the bid document Drawings.

8.4 The Contractor shall backslope the sides of the wash to obtain sufficient clearance of the pipe from the bank. Erosion control devices shall be constructed as indicated/required in the Federal and State 401/404 permit instructions and storm water pollution prevention plan, as well as NMGC Environmental stipulations.

8.5 The Contractor shall take care that no water enters the pipeline throughout the installation process. The Contractor shall handle pumping and removal of water through such crossings. Any water removed must be handled per the applicable permit specifications.

8.6 The Contractor should be prepared to provide all materials to construct sediment ponds as required by the Company Representative or outlined in the permit requirements. All water pumped from such crossings shall be discharged into the sediment pond by the Contractor.

8.7 All such crossings of creeks, streams, minor rivers or arroyos must be started and completed within one week, or as directed on a site specific case, from beginning to final clean up.

9 HORIZONTAL BORING & DIRECTIONAL DRILL

9.1 The Contractor shall furnish all labor, equipment and supplies and will perform all work and operations necessary to construct crossings by the directionally controlled horizontal drilling method. Bores shall be made along the lines, grades and burial depths as shown or specified herein. All bores shall be installed level and at right angles to the right of way lines unless otherwise specified herein or by the Company Representative.

9.2 Where indicated on the Drawings or Construction Specifications, casing shall be installed.

9.3 The Contractor will be paid for all boring that is required per the Contract Specifications and Drawings based on the Contractor’s price as submitted in the Bid Document. If a change to the minimum required boring distance is made it will be made by the Company Representative only. Should the Contractor wish to extend the boring distance for


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convenience purposes, the Contractor will be paid for only that minimum distance as determined by the Company Representative.

9.4 All expenses for machine-bored crossings should be included in the price quoted on the Bid Form.

9.5 The Contractor shall be responsible for informing the Company 48 hours before any operations are commenced; furthermore, the Contractor shall be responsible for abiding by any requirements listed in the crossing permit. The Contractor shall effect reinstatement of roads, sidewalks and road signs in compliance with permit requirements.

9.6 The Company shall provide 100% radiographic inspection of any piping section installed through a bored location.

9.7 The drilling equipment, methods and drilling fluids to be used shall be submitted to Company for approval prior to utilization. No equipment, methods or fluids will be approved or used that do not comply with permit requirements and environmental regulations.

9.7.1 Disposal: Disposal of drilling fluids shall be the responsibility of the Contractor and shall be conducted in compliance with all relative environmental regulations, right of way and work space agreements and permit requirements.

9.7.2 Inadvertent Returns: Drilling fluid returns at locations other than the entry and exit points shall be minimized. Contractor shall immediately clean up any inadvertent returns.

9.8 The Contractor shall ensure by whatever means necessary that all bores are installed with a maximum variance on burial depth at the bore ending point of +0 feet and -2 feet and a maximum variance on horizontal location at the bore ending point of ±3 feet. No variance of any kind will be allowed for bore starting point depth and horizontal locations and for minimum allowable burial depths under highways, streets, roadways, railroads, canals, side slopes, swales, ditches, etc. Contractor will be required to employ surveyors to ensure that proper locations, alignments and minimum depths are maintained throughout the boring length.

9.9 The Contractor may drill a small diameter pilot hole along the alignment as indicated in the Drawings. If the Contractor chooses to drill a pilot hole, the Contractor shall at all times provide and maintain


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instrumentation which will accurately locate the pilot hole. The Company shall have access to these instruments and their readings at all times.

9.10 Abide by the following requirements:

9.10.1 Pilot Hole (Optional):

9.10.1.1Directional Tolerance: The pilot hole shall be drilled along the path shown on the Plan and Profile drawing to the following tolerances:

* Elevation: Plus 0 feet, minus 2 feet.

* Alignment: Plus or minus 3 feet (horizontal).

* Curve Radius: As determined by design calculations.

* Entry Point Location: The pilot hole shall initially penetrate the ground surface or bore pit wall at the exact location shown on the Plan and Profile drawing. Contractor shall stake this location in the field.

9.10.1.2As-built Survey: At the completion of the pilot hole drilling, the Contractor shall provide a tabulation of coordinates referenced to the drilled entry point which accurately describe the location of the pilot hole.

9.10.2 Ream and Pull Back (Required):

9.10.2.1Pre-reaming: Pre-reaming operations shall be conducted as directed by the horizontal-drilling Contractor. All provisions of this specification relating to simultaneous reaming and pulling back operations shall also pertain to pre-reaming operations. No pre-reaming or reaming will be allowed using the carrier pipe.

9.10.2.2The Contractor will be responsible for supplying drill pre-reaming bore pipe at no additional expense to the Company.

9.10.2.3Pulling Loads: The maximum allowable tensile load imposed on the pipeline pull section is 90% of the product


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of the SMYS of the pipe and the area of steel in the pipe section.

9.10.2.4Torsional Stress: Use a swivel to connect the pipeline pull section to the reaming assembly to minimize torsional stress imposed on the section.

9.10.2.5Push/Pull Section Support: Support the push/pull section as it proceeds during pull back so that it moves freely and corrosion coating is not damaged. If corrosion coating, concrete coating or other coating is damaged on the carrier pipe, the Contractor will at his own expense provide new pipe coating to the satisfaction of the Company Representative.

9.10.2.6Corrosion Coating Inspection: Inspect the pull section for holidays with an electric holiday detector as it enters the hole. Repair any coating damage.

9.10.2.7Push/Pull Section Length: If space allows, install the pull section in one continuous length. Tie-in welds shall be minimized and fully inspected by radiographic means at completion of weld cover pass.

9.10.2.8The Contractor will at all times adhere to OSHA standards and requirements for the bore pit and bore section.

9.10.2.9Any void left after carrier pipe is installed shall be filled by the Contractor with a pre-approved grout or mud mixture to the satisfaction of the Company Representative at no additional cost.

9.10.2.10In the case of carrier pipe being concrete coated the Contractor will be required to concrete coat all exposed weld joints prior to installation through the bore pits. The concrete coated weld joint section shall be completed to the satisfaction of the Company Representative.

10 BENDING

10.1 Contractor shall make all necessary field pipe bends required in the construction of the line, but Company may at its option require the use of


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manufactured elbows for installation at points where, in its judgment, the use of such is preferable. All bending shall be accomplished by the Contractor using an approved, cold, smooth bending method incorporating an approved bending machine having a bending shoe and/or internal mandrel. The bending machine shall produce a smooth, symmetrical bend with no stretching or thinning of the pipe wall. No flattening wrinkles or distortion of the pipe circumference will be permitted.

10.2 Contractor will insure that all shoes and other pipe handling equipment on the bending machine are padded to minimize damage to the pipe.

10.3 Minor changes in direction and bends required which conform to the land contour shall be made by cold bending with an approved bending shoe and then shall be limited to a change of direction of a maximum of 1-1/2 degrees in any length along the pipe axis equal to the diameter of the pipe; for X-60 and above, a maximum of ½ degree per pipe diameter. Maximum and minimum diameters of the pipe after bending shall be within 2.5 percent of the nominal diameter. The longitudinal weld seam must be as near as practicable to the neutral axis of the bend. Bends shall not be made within 24 inches of a circumferential weld. All bends shall be free from buckling, cracks or other evidence of mechanical damage. Wrinkle bends will not be permitted. Bends will be made with a suitable hydraulic bending machine with an internal mandrel on pipe 12 inches in diameter and larger.

10.4 Contractor shall pay Company the delivered cost of pipe, which, in the opinion of Company, is damaged beyond use in bending operation. Payment shall be based upon a joint measurement of damaged pipe and supported by Change Order to be written at the time the damaged bend occurs.

10.5 All bends shall be installed in such a manner that the bend shall fit the ditch contour without additional imposed stress being applied by the pipe. Where over-bends are installed in any pipeline, they shall be installed in a manner that allows for the pipe at the point of the bend to clear the high point of the bottom of the ditch by at least 6 inches. Where side-bends are installed in any steel pipeline, they shall be placed in the bottom of the trench in such a manner that they lie against the outside wall of the curved trench. All over-bends (upward vertical


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bends), sags (downward vertical bends), and side-bends (horizontal bends) shall be made prior to any external cleaning and prime-and-tape work taking place. All bends shall be installed in such a manner that an adequate amount of slack is always maintained for “snaking” of the pipeline.

10.6 The Company Representative shall approve all pipe bends. Any bend or straight section of pipe that is buckled, kinked, flattened, distorted, damaged or inadequate shall be cut out and replaced by the Contractor at no extra cost to the Company. The Contractor is responsible and accountable for making proper bends and welds and installing adequate piping in compliance with this Contract.

11 WELDING

11.1 General:

11.1.1 All welding on steel transmission facilities shall be performed in accordance with established Company Standard Welding Procedures.

11.1.2 The Contractor shall furnish all electrodes, rod, acetylene and oxygen required to complete the work.

11.1.3 All pipeline welds shall be the butt weld type. All surfaces to be welded shall be clean, bright and free of material that may be detrimental to the weld. Ends shall be prepared with a standard 30° bevel. Plain or field-cut ends shall be machine beveled at no additional cost to Company. The ends of the pipe to fitting joints shall be aligned accurately, using a line-up clamp; for pipe 12 inches in diameter and larger, hydraulic or air-powered H and M internal line-up clamps or equivalent, shall be used. Alignment and root gap shall provide the most favorable condition for the deposit of the root or stringer bead and shall be maintained during the stringer pass. No offset in the alignment of pipe of the same wall thickness shall exceed 1/16 inch. Offsets up to 3/32 inch are permissible if the piping to be joined is of different wall thickness, and if it is not otherwise stated or shown in the Contract Drawings and Documents. Differences exceeding 3/32 inch shall be joined with a transition piece or by special end preparation. The longitudinal pipe seam shall be placed at a 10 o’clock or 2 o’clock


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position on the pipe, and each alternate length shall have the seam, if any, placed at the alternative 10 o’clock or 2 o’clock position from the preceding length. Fittings, as needed, shall be tapered to 3/32 inch difference in all thicknesses.

11.1.4 The minimum distance, along the length of any pipe, between any butt (girth) weld, or branch connection (thread-o-let or weld-o-let) fillet weld, and any other butt or fillet weld shall be 6 inches. No two welds shall be made in the same section along the piping. For example, one branch connection weld on one side of a section of pipe and another branch connection weld on the other side of that same section of pipe shall not be allowed, if the length of the section is short enough that the above referenced minimum spacings are violated. The minimum pup length of any pipe, from butt (girth) weld to butt (girth) weld shall be 1.5 times the diameter of the pipe.

11.1.5 If pipe specification is X60 or higher, stringer bead must be run at one time. Do not remove line-up clamps or move pipe until stringer bead is complete.

11.1.6 The contractor must provide and have available, easily accessible and utilize adequate, fully charged and completely operable fire extinguishers and any other necessary safety equipment at all times on the job site.

11.1.7 Welding rod ends, scrap metal, or any other waste material or garbage are not allowed in the trench, excavations, rights-of-way, or other work areas. All such items shall be picked up, hauled off and properly disposed of by the Contractor.

11.2 Welders Qualification:

11.2.1 Contractor shall use only competent, skilled, and qualified workmen, and all work shall be completed to the satisfaction of the Company Representative. All welders employed by Contractor shall be certified per API 1104 at no expense to Company. Additionally, each welder employed by Contractor shall be required to satisfactorily pass Company welding test at the expense of the Contractor before being allowed to weld on the job. Any welder failing to pass the test, in the opinion of the Company


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Representative, shall not be permitted to weld on the job. Each welder will be timed on the test weld and will not be permitted to make welds in substantially less time than that required in making the qualifying test weld. Tests shall be recorded.

11.2.2 At the option of the Company, the Contractor shall provide tests of the Contractor’s welders and weld coupons through the use of a local laboratory. These tests will be at the expense of the Contractor.

11.3 Weather Conditions

11.3.1 Welding shall not be permitted when weather conditions are unsatisfactory and would impair the quality of welds. No welding shall be done if, in the opinion of the Company Representative, high winds, rain, snow, dust or sandstorms are of sufficient magnitude to prevent satisfactory welding. Suitable wind guards and shelters shall be provided by the Contractor to protect work in windy or wet weather. A water truck may be required for dust control at the contractor’s expense.

11.3.2 For all pipe materials, if the ambient air temperature, as reported by the U.S. Weather Bureau is below 40oF, the pipe weld area shall be preheated to hand warm.

11.3.3 Preheating requirements and the time between weld passes shall be in accordance with the applicable Company approved welding procedure.

11.4 Equipment:

11.4.1 All electrodes and consumable welding supplies will be supplied by the Contractor and shall be suitable for their intended use, and shall comply with the requirements of the appropriate AWS Specification and be supplied in sealed moisture-proof containers. The Contractor shall provide proper storage facilities on site to the standard recommended by the electrode manufacturer and to the satisfaction of the Company Representative. Any electrodes exposed to moisture shall be discarded. All welding rods used during mainline construction shall be the same type used during welders’ qualification tests. Amperage shall be within the range


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specified by the manufacturer of the rod being used. The voltage and amperage output on each machine may be checked by the Company prior to use on the line and at intervals during construction.

11.4.2 Rod for gas welding shall be Ox-weld No. 1 HT. All rods shall be furnished in closed containers and any rod which has been damaged, exposed to moisture, or is not clean shall not be used.

11.5 Defective or Damaged Pipe:

11.5.1 Should lamination, split ends or inherent manufacturing defects in the pipe be discovered, the length of pipe containing such defects shall be removed from the line, and immediately brought to the attention of Company. Pipe with manufacturing defects shall be cut and re-beveled as required by Company. No repairs shall be carried out on longitudinal pipe seam welds. The cost of beveling any joint shall be borne by Contractor unless it is determined that the damages occurred prior to the Contractor’s accepting the custody of the pipe with such defects being clearly noted on the pipe tally being signed by the Contractor’s representative and the Company Representative. If the damages occurred prior to the Contractor’s accepting custody of the pipe, Contractor shall be reimbursed for repairs in accordance with the charge shown on the Bid Form.

11.6 Cleaning and Beveling:

11.6.1 All paint, rust, scale, dirt, oil and foreign matter, which might effect the welding operation, are to be removed prior to welding. Bevels shall be cleaned to bright metal. Welds shall be cleaned free of slag between each pass. Grease or heavy oil shall be removed with a non-flammable, non-volatile solvent. Use of kerosene is prohibited.

11.6.2 The Contractor is to re-cut and bevel all pipe ends as required to maintain correct alignment and spacing of the pipe. All burning slag or burrs must be removed from the surface prior to welding. Miter cuts will be made only upon Company’s approval and at the expense of the Contractor.


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11.6.3 Pipe for welding shall be set up, properly spaced for thermal changes during welding, in correct alignment, and shall in no circumstances be sprung into position.

11.6.4 All cutting of pipe that is to be butt-welded shall be cut on the bevel with a torch-cutting machine. The resulting surface shall be ground and filed to clear away all adhering burned metal, and the inside of the pipe shall be thoroughly cleaned to removed any particles of burned metal.

11.7 Marking Welds:

11.7.1 Each welder working on the pipeline shall use the qualification card number as a distinctive mark and shall place that number on the pipe with lumber pencil near each weld he has made.

11.7.2 In the event more than one welder has welded on the single weld, each welder shall place his mark near the portion he has welded.

11.7.3 The mark for the stringer pass shall be placed on top, the hot pass immediately underneath, and in sequence for each succeeding pass.

11.7.4 Any weld found not marked shall be cut out at the Contractor’s expense.

11.7.5 Under no circumstances will steel stamps be used to mark the welds.

11.8 Test of Welds in Line:

11.8.1 After each welder has qualified in the preliminary tests referred to above, Company shall have the right to cut from the line a weld made by each welder to prove his workmanship. All expenses in connection with cutting out and replacing this weld shall be borne by the Contractor. Any or all welds may be inspected by radiography.

11.8.2 The Company shall make a maximum of one destruction test per mile or fraction thereof at no cost to Company. Additional destructive tests may be required in the event that the first weld fail test.


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11.8.3 Destructive tests will be made by removing the weld to be tested and replacing the removed section of pipe with a “pup” joint at least 3 feet long or a length equal to 3 diameters whichever is longer. Standard test specimens shall be cut across the weld and subjected to examination in accordance with the latest edition of API 1104, Section 3, single qualification.

11.8.4 Should the weld fail one or more of the above tests, the second weld of the same welder shall be tested immediately. The contractor shall bear the costs of this cutout repair and testing. Failure of the second pup shall be cause to remove the welder from the pipeline construction. The contractor shall immediately provide the company representative a written plan to address the issue with the welder. A third weld by the same welder/team shall be tested. Should the third weld fail a weld will be cut out and sent to a third-party testing faciality to be burst test at a vender selected by the company burst tested. The contractor shall bare all cost associated with cutting out and repair of the pipeline, shipping and the test itself. The contractor shall stop work and develop and plan to correct issues with the welder/team. The contractor will not be allowed to proceed until the company representative has approved this plan. Contractor shall be responsible and shall indemnify NMGC for all costs, damages, claims (including third party claims), and expenses arising out of, resulting from or relating to welding issues, including but not limited to costs associated with delays due to any testing and repair required under this provision.

11.8.5 Completed welds shall have a neat appearance free from surface defects and undercut meeting the limits specified in the latest revision of API Standard 1104, Section 3.3, entitled “Visual Examination.”

11.9 Reimbursement for Extra Welds:

11.9.1 A record of the results for each test weld shall be made by Company and jointly signed by Company and Contractor.

11.9.2 If additional destructive tests are required by the Company Representative over and above the “one per mile” and these tests are found to be acceptable, the Company shall pay the Contractor


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a sum equal to the Contractor’s submitted unit cost per weld for that diameter pipe. Note, the cost per weld bid amount shall include cutting out, testing, and inserting the “pup” piece, coating and any other cost incurred in repairing the line. If the tested weld is rejected, all costs shall be borne by the Contractor.

11.10 Radiographic Testing:

11.10.1Any or all welds may be inspected by radiography or x-ray at the expense of Company. All welds shown defective per API 1104 shall be removed in their entirety and replaced at the expense of the Contractor. Company may elect to repair welds with exterior defects instead of replacing them. The API 1104 Weld Defect Evaluation Guide for Pipelines shall be used as the standard for deciding if the weld is acceptable.

11.10.2Radiographic inspection of welds shall be in accordance with the requirements of DOT Part 192, Section 192.243. A minimum of 100 percent of all welds will be inspected and 100 percent of all welds in Special installation locations. In addition, 100 percent of all lateral tie-ins will be inspected. Where less than 100 percent of the welds are to be inspected, a proportional share of each welder’s welds will be selected for inspection.

11.11 Repairs:

11.11.1The removal and repair of defects in field welds shall be undertaken in accordance with API Standard 1104.

11.11.2During any welding process, the occurrence of any burn-through, that has a dimension across the weld width (transverse width) in excess of 5/16 inch or in excess of the wall thickness of the pipe/fitting being welded (whichever is less), must be inspected by the Company Representative and at his discretion be removed or repaired. Arc burns shall be removed by cutting a cylinder of pipe, 1 ½ diameters in length encompassing the said defect and shall be replaced at Contractor’s expense. This shall be the case whether the burn-through seems to be repairable or not. In all cases, halt welding immediately if a large burn-through or any crack is noted, and cut out the entire associated weld. All repairs and “cut outs”, as required under API 1104 and as otherwise


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outlined herein, shall also apply, whether noted by visual inspection or indicated by radiographic inspection.

11.12 Flanged Joints and Weld Fittings:

11.12.1Flanged joints shall be made in accordance with the Drawings.

11.12.2The pipes shall be aligned so that the flanged faces are parallel. Flanged joints shall be raised face with gaskets as specified. Flanges shall be installed so that bolt holes straddle vertical centerlines of pipe. The bolt shall be tightened up in a manner to ensure that an even pressure is exerted around the circumference of the joint at all times. Standard length spanners only shall be used for tightening bolts. Insulating gaskets will be installed where required by the Company Representative or the Specifications.

11.13 Closing Ends of Line:

11.13.1The open end of the line shall be securely closed at the end of each day’s work to prevent the entrance of water, small animals, trash or any other obstructions and shall not be opened until work is resumed. Where the line is left apart at intervals for any reason, both ends shall likewise be securely closed. The manner of closure must be satisfactory to Company. Failure to close ends of section which cannot be swabbed shall be cause for requiring Contractor to run scraper through that section of pipe before tying into line.

11.13.2If the pipe contains dirt, rust, sand or other foreign materials after it has been strung along the right of way, each length shall be swabbed prior to welding it into the pipeline. The swab may be a wire brush, cloth swab or rubber pig. Each length shall be visually inspected internally prior to use.

11.13.3After the pipeline or measured portions thereof is complete, a pipeline scraper and squeegee pigs furnished by the Contractor shall be run through the line at least twice or until pipeline is clean. Prior to the pigging operation, Contractor shall furnish and install a pig catcher on the end of the line. The scraper shall be


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moved with air pressure at a sufficient rate to properly clean the line

12 COLD TAR COATING PROCEDURES

12.1 SAMPLING PROCEDURES

12.1.1 Sampling pipeline coating is performed only by Asbestos Inspectors. Contact the Safety Department to locate one of the Company Asbestos Inspectors.

12.1.2 For any job involving the removal of coal tar pipe wrap, or the disposal of wrapped pipe, the Foreman, Project Manager or their Supervisor(s) may decide which of the following options to follow:

Option 1: The Company can declare that the wrap contains Asbestos and bypass any testing costs and delays. The coal tar pipe wrap is classified as Suspect Material and removal of coal tar pipe wrap is conducted by Qualified Persons using the procedures in this Program (go to Section VI).

OR Option 2: The Company obtains samples of the coal tar pipe wrap by following the procedures below. These samples are analyzed for Asbestos by an Accredited Laboratory. Disposal of the pipe wrap is delayed until laboratory results are provided.

12.1.3 Should Option 2 be selected, the following sampling procedures are recommended for the Asbestos Inspector: 12.1.3.1Thoroughly saturate the sample with a dilute

water/woolite mixture. Use a utility knife or other sharp edged device to cut a small (minimum quarter sized) sample out of the coal tar pipe wrap. Ensure that the sample contains all the layers of wraps and mastics down to the bare pipe.

12.1.3.2Place the wet sample in a re-sealable sandwich sized plastic bag. Carefully flatten the bag before sealing it to remove the excess air in the bag. Label the bag with the following information:


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1. Pipeline Description (transmission, main, or service line, etc)

2. Sample Site (address or location on the pipeline where the sample was taken)

3. Date of sample 4. A special Sample number that includes date, sample

number, and sampler’s initials in the following format: MM/DD/YY-Sample Number-Asbestos Inspector’s initials. For example: 102903-01-DP, 102903-02-DP, etc…

5. Name and phone number of the Asbestos Inspector 12.1.3.3Ensure that the sample hole in the pipe wrap is repaired

with a cathodic patch if the gas line is to remain in service. Refer to procedure CM023 in the Gas Operations Manual for instructions on repairs.

12.1.3.4Submit the sample to an Accredited Laboratory for asbestos analyses using Polarized Light Microscopy (PLM) using proper chain of custody procedures. Communicate to the Accredited Laboratory the required turn-around-time (how soon you need the sample results).

13 REMOVAL 13.1 PREPARATION FOR COAL TAR PIPE WRAP REMOVAL

13.1.1 Some of the Company’s pipeline is coated with coal tar pipe wrap that contains Asbestos. There is no difference in appearance between coal tar wrap that contains Asbestos and coal tar wrap that does not contain Asbestos. The Company position is that if a decision is made not to test for Asbestos, the pipe will be treated as Suspect Material. The removal of Suspect Material may occur in conjunction with installing a new service, repairing a leak or removing a length of pipe from the pipeline. The removal of Suspect Material requires the following:

1. Only Qualified Persons may remove Suspect Material


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2. The Qualified Person must use the wet method detailed in this Procedure and comply with the Company Respiratory Protection Program in the Safety Manual.

3. The Qualified Person must STOP WORK and notify the Safety Department if the removal of all sections required for the completion of the project exceeds a) 260 linear feet, b) 160 square feet, or c) ten contiguous linear feet of Suspect Material. Note: A regulatory evaluation is required prior to the start of construction work for any project that anticipates the removal of 260 linear feet or more coal-tar wrap.

4. Before commencing work on Suspect Material assemble the following equipment: a. 6 mil bags at least 30 gallon in size b. Nylon cable ties c. Duct-tape d. Asbestos Warning Labels (bags labeled with

the appropriate label in English can be purchased through the Materials Catalog. To meet New Mexico state requirements apply a second warning label in Spanish to the bag. These are available in rolls of 100 from the Safety Department.)

e. 1 gallon sprayer f. A quarter ounce travel pack of Woolite® g. Sharp knives and tools for scraping the coal tar

wrap from the pipe. h. A brass hammer i. 6 mil plastic drop cloth to capture everything

that falls from the pipe while the wrap is being removed

13.2 PIPELINE COAL TAR PIPE WRAP REMOVAL PROCEDURES

13.2.1 To remove coal tar pipe wrap:


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1. Assume that the material being removed contains Suspect Material.

2. Add a packet of Woolite® into a one gallon spray bottle and fill the bottle with water. Mix to combine.

3. Place an impermeable 6 mil drop cloth directly beneath the entire length of the pipe section where the removal will occur.

4. Spray the entire area of coal tar pipe wrap to be removed with the Woolite® solution. Keep the pipe wrap wet as the job progresses.

5. Using a brass hammer, knock the coal tar pipe wrap off. Ensure that all pieces of coal tar pipe wrap fall on the drop cloth

6. With a flat edged tool (scraper, back edge of a hack-saw blade, etc) scrape off any coal tar wrap residue that remains. Catch all falling debris on the drop cloth.

7. Bevel the edge of the coal tar pipe wrap as explained in procedures CM023 and DTTS-8 of the Gas Operations Manual (GOM). The GOM is located on Gas Connect at http://abqwb009/gasoe/Policies_Procedures/GOM.pdf

8. Re-wet the debris on the drop cloth and fold the drop cloth by bringing the outside edges towards the center, folding the debris into the cloth.

9. Place the folded cloth into an Asbestos labeled plastic bag of 6-mil thickness. Place the first bag inside a second Asbestos labeled plastic bag of 6-mil thickness.

10. The top of each bag should be twisted to minimize the amount of void space or air in the bag to form a “goose neck”. The “goose neck” should be folded over and sealed with duct tape or a nylon cable tie.

11. Before and during loading of the bags for transport to the local facility ensure that the bags are intact. If they are punctured or leaking place them in a new bag and seal shut.

12. For pipe segments or other facility components, which are removed as sections without removing the coal tar pipe wrap, wrap with 6-mil thick plastic only if necessary, and only to the extent required, to prevent loss of coal tar wrap during transport (such as the wrap at the ends of the pipe, if frayed).


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13. Ensure that each debris bag that contains coal tar wrap is properly labeled. Each must be labeled with the following warning in both Spanish and English:

DANGER CONTAINS ASBESTOS FIBERS

AVOID CREATING DUST CANCER AND LUNG DISEASE HAZARD

PELIGRO CONTIENE FIBRAS DE ASBESTOS

EVITAR LA FORMACION DE POLVO RIESGO DE CANCER Y DE DANO PERMANENTE A LOS

PULMONES. EVITAR RESPIRAR LAS FIBRAS DE ASBESTOS QUE SE

ENCUENTRAN EN EL AIRE

14. Use a permanent marker to write the work order number or the work request number on each bag.

15. Transport the bagged coal tar pipe wrap or piping back to the Company facility at the first opportunity. Inspect all bagged Suspect Material after unloading to ensure that:

a. No bag is torn or punctured. b. Duct tape or a cable tie has been placed around the necks of

all bags and there are no punctures to the bags. c. All containers and bags are properly labeled.

If a damaged bag is found, place it into a new bag and secure the neck of the new bag with a nylon tie or duct tape.

16. Once back at the service center or town plant, store Suspect

Material as directed in section 16 of this procedure.

14 LEAVING RETIRED PIPE IN THE GROUND 14.1 Coal tar wrapped pipe or valves that are separated from the system are

considered to be “retired.” Whenever possible, remove retired components from the ground. If removal is infeasible, such components may remain in the ground until identified for removal.


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15 PROHIBITED WORK PRACTICES 15.1 When working with coal tar pipe wrap:

1. Do not use power tools on coal tar pipe wrap: a. Do not grind coal tar pipe wrap. b. Do not cut pipe that is still wrapped with coal tar pipe wrap.

2. Do not remove coal tar pipe wrap dry. a. It must be sprayed with Woolite® solution before using the

brass hammer to remove the coal tar pipe wrap. 3. Use torches only after all coating has been removed.

a. Never use torches on pipe with visible residue of coating.

16 STORAGE 16.1 All Suspect Material that has been packaged and labeled appropriately

for storage at a Company facility should be stored as follows: 1. Duct tape all goosenecks that are closed only with nylon

cable ties. 2. Place bagged coal tar pipe wrap into labeled storage

containers that are waterproof, such as plastic drums, located in a secure storage area at each service center or town plant. The drum label should contain the OSHA hazard warning in both English and Spanish as follows:

DANGER CONTAINS ASBESTOS FIBERS

AVOID CREATING DUST CANCER AND LUNG DISEASE HAZARD

PELIGRO

CONTIENE FIBRAS DE ASBESTOS EVITAR LA FORMACION DE POLVO

RIESGO DE CANCER Y DE DANO PERMANENTE A LOS PULMONES.

EVITAR RESPIRAR LAS FIBRAS DE ASBESTOS QUE SE ENCUENTRAN EN EL AIRE

3. The drum should contain nothing but ACM or Suspect Material.


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4. If coal tar wrapped pipe does not fit in the waste storage area, store it in the yard. This pipe should be placed in a designated storage area that is separate from new pipe. The contracted waste hauler will prepare the pipe for shipping in accordance with regulatory requirements.

17 DISPOSAL

17.1 Contact the Safety Department to arrange for disposal of Suspect Material. Remember the following:

1. Never dispose of Suspect Material by placing it in a container with other trash, by burying it, using it as fill material, or leaving it in a pipe excavation ditch.

2. Under no circumstances should any Suspect Material be sold or transported to a scrap dealer or individual buyer.

3. The Company will arrange for disposal of Suspect Material from the Company service centers or town plants by an approved Asbestos hauler.

18 EMERGENCY PROCEDURES

18.1 In the event of an emergency (fire, explosion, natural or manmade disaster, etc.) follow applicable emergency procedures. Suspend the procedures in this Program as necessary to address safety concerns.

18.2 DITCH PREPARATION

18.2.1 The construction ditch and right-of-way shall be excavated and maintained according to Company specifications.

18.2.2 The pipeline ditch shall be of sufficient width to allow lowering-in

and sufficient clearance to avoid damage to the coated pipe.

18.2.3 The excavated ditch shall be free of rocks, hard clods, stumps,

skids, roots, and other solid debris. The excavated backfill soil shall not be contaminated with foreign materials.

18.2.4 The ditch shall not contain water or liquids prior to lowering in.


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18.2.5 During excavation of the pipeline ditch through rocky area, the

sides and bottom of the ditch shall be cleared of all loose or projecting rock that will damage the coated pipe. At the discretion of the Company, the Contractor shall provide a continuous bedding, at least 6 inches thick, of select backfill or sand in the bottom of the pipeline ditch prior to lowering in. Agricultural topsoil for ditch padding shall not be utilized.

18.3 PIPE SURFACE PREPARATION

18.3.1 Work practices discussed below apply only to working with bare steel pipe. Pipe with coal-tar coatings that need to be removed must be handled as specified as indicated in the NMGC Coal Tar Pipe Wrap Program. The bare steel pipe shall be free of mud, mill lacquer, wax, oil, grease rust, mill scale, and any foreign material that prevents the Polyken line travel coating system from bonding to the steel surface. This shall also include fuel and lubricants from the CPT (cleaning priming-taping) machine.

18.3.2 Prior to mechanical cleaning of the pipe steel, the pipe surface shall be inspected and, if required, pre-cleaned according to Steel Structure Paint Council SSPC-SP-1 specifications for the removal of oil, grease, and/or loosely adhering deposits on the steel surface. Visible oil and grease shall be removed by use of a suitable white gas organic solvent (Naphtha) system. Gasoline, kerosene, benzol (benzene), toluol (toluene), xylol (xylene), or any chlorinated organic solvent shall not be used.

18.3.3 Excessive weld splatter, slag, sharp edges, burrs, knurls from

welding shall be removed from the pipe surface by rasping, grinding, power wire brushing, or any other methods approved by the Company.

18.3.4 Excessive dust prior to mechanical cleaning shall be removed by

wiping or with a high-pressure dust blower, or vacuum type device.


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18.3.5 The pipe surface shall be inspected prior to mechanical cleaning and application of the line travel coating system and determined if the pipe surface is in compliance with section 12.6.

18.4 MECHANICAL CLEANING

18.4.1 Visible moisture or frost on the steel pipe surface prior to mechanical cleaning shall be removed. In addition, when the pipe surface temperature is below 38°F, heating of the bare steel pipe shall be required. Uniform heat shall be applied to the pipe surface to a temperature that will remove all frost and moisture from the steel pipe surface. The contractor shall coordinate the pipe heating operation with the CPT machine as to provide a dry warm pipe surface prior to the coating application. The pipe surface temperature, prior to primer application, shall not exceed 160°F.

18.4.2 ABRASIVE CLEANING

18.4.2.1The exterior surface of the pipeline shall be mechanically cleaned using a line travel grit or sand blast cleaning apparatus. The line travel blast equipment shall be operated and maintained in accordance with the manufacturers specifications. The line travel blast machine manufacture shall be responsible for the proper operation, maintenance, and personnel training of the blast cleaning equipment.

18.4.2.2The line travel blast cleaning machines shall be operated

to achieve a minimum Steel Structure Paint Council SSPC-SP-6 or NACE TM-01-70-#3 commercial blast finish. The surface anchor profile depth shall be no less than 1.0 mils and no greater than 2.5 mils.

18.4.2.3The driving and cleaning mechanism of all line travel

cleaning equipment shall not scar or bum the cleaned pipe surface. The equipment shall provide protection to the cleaned pipe such that the contamination of the pipe surface will not occur prior to coating application. Contaminated pipe surface shall be processed through the required


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cleaning procedures. Cleaned pipe surfaces shall be protected from high humidity, rainfall or surface moisture. Pipe shall not be allowed to flash rust prior to application of the coating materials.

18.4.2.4Cleaned pipe surfaces shall not be pre-treated with any

material prior to the application of the coating system.

18.4.2.5All pipe surface preparation and cleaning shall be inspected and meet Company approval prior to coating the cleaned pipe with the Polyken line travel coating system.

18.5 LOWERING IN AND HANDLING OF COATED PIPE

18.5.1 Pipe coated with the FBE coating shall be lowered directly into the pipeline ditch. Conditions may exist that delay the immediate lowering-in of the coated pipe. Coated pipe shall be temporarily stored on padded and protected wooden skids. Coated pipe shall never rest on bare, unprotected skids. Walking on coated pipe shall not be permitted.

18.5.2 Coated pipe shall be handled and lowered into the ditch utilizing rubber tire cradles, wide nylon slings (equal to or greater than the pipe diameter) or other equipment designed to prevent damage to coated pipe. All handling equipment shall be maintained by the construction contractor to prevent damage to the coated pipe. Coated pipe shall not be handled with tongs, bare metal pinch bars, chain slings, rope slings with protruding rivets, calipers, and any other equipment that will damage the coated pipe. Prior to lowering-in, the pipeline ditch shall be free of all foreign material. This shall include skids, and/or skid parts, discarded waste material, tools, welding materials, and any other matter that may damage the coated pipe.

18.5.3 During the lowering-in process, coated pipe shall not contact or

impact the sides of the pipeline ditch. Precautions shall be instituted to prevent swinging, impacting, or scuffing on the sides or bottom of the pipeline ditch. All overbends shall be installed into the pipeline ditch with the bend configured towards the outside curvature of the ditch. Pipe sags shall be installed into the


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pipeline ditch such that the entire length of the sag is in full contact with the ditch bottom.

18.5.4 Pipe coating, which is damaged during the lowering-in process,

shall be repaired prior to backfilling.

18.5.5 Where additional ditch padding has not been specified by the Company, an additional perforated rock shield shall be used as further protection of the coated pipe from excessive rock fill.

18.6 BACKFILLING

18.6.1 Backfilling shall immediately follow lowering-in of the coated pipe. This shall be strictly enforced during extreme climatic conditions

. 18.6.2 The backfill material shall be visually inspected and removed of

foreign material such as boulder size stones, wooden skids, tree stumps, and any other foreign material that will damage the coated pipe. The backfill material shall be dropped from the edge of the ditch perpendicular onto the coated pipe and in a manner to prevent damage to the coating.

18.7 TIE-IN/JOINT COATING APPLICATION

18.7.1 Tie-in sections, not already coated shall be coated with a Company approved Coating System

. 18.7.2 The pipe steel surface shall be power wire brush cleaned to a

minimum Steel Structure Paint Council SSPC-SP3 surface finish. 18.7.3 Approved primer shall be brush applied to the cleaned pipe

surface at a wet thickness of 2.0 - 3.0 mils. The primer shall be dry prior to coating application.

18.7.4 The Joint coating shall be applied per manufacture’s

specifications, wrapped, in a 50% overlap configuration, maintaining proper application tension to achieve a smooth, tight, wrinkle free coating. The coating shall overlap the machine


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applied anti-corrosion layer a minimum of 4 inches. This will require the mechanical protection layer to be unwound from the anti-corrosion layer

18.7.5 The coating material shall be cut free from the roll in a downward

configuration at the 3 or 9 o’clock position on the pipe.

18.7.6 The tie-in coating shall be inspected in accordance with section 12.12.3.

18.8 FACTORY BENDS

18.8.1 Factory bends shall be mechanically cleaned with a power wire brush to a minimum Steel Structure Paint Council SSPC-SP3 surface finish.

18.8.2 Polyken #1027 or #2027 primer shall be brush applied to the

cleaned pipe surface. The wet primer thickness shall be 2.0 - 3.0 mils. The primer shall be dry prior to the application of the anticorrosion layer.

18.8.3 The Polyken coating shall be simultaneously applied to the primed

pipe surface. The coating layers shall be applied with wrapping machines equipped with a constant tension brake system. Tension shall be applied to achieve a 1% - 2% neckdown in width. The wrapping machines shall be designed for factory bend applications and shall be maintained and operated in accordance with manufacturer specifications for factory bend coating application.

18.8.4 The coated factory bends shall be inspected in accordance with

section 12.12.3..

18.9 UNCASED/CASED CROSSINGS

18.9.1 Precautions shall be instituted to minimize the damage to coated pipe used for uncased/cased crossings.


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18.9.2 Pipe sections used for crossings shall be coated with the coating overlap advancing in the direction the pipe is to be pulled. Coated pipe shall NEVER be pulled through the uncased/cased crossing against the spiral overlap.

18.9.3 The mechanical protection layer for crossing sections shall always

use a polyethylene backing laminated to a pressure sensitive adhesive system. A non-adhesive mechanical protection layer shall NEVER be used to protect pipe used for crossings. Additional mechanical protection may be used at the discretion of the Company to protect the pipe at crossings.

18.9.4 Pipe coated with the Polyken line travel system shall not be

pushed through uncased/cased crossings for a minimum of 4 hours following application onto the pipe.

18.9.5 Pipe rollers used for crossings shall be large inflatable tires that

freely roll during pipe installation. Small hard rubber, plastic, or steel rollers shall not be used. Wooden support skids shall be padded.

18.9.6 Electrical holiday inspection and coating repair shall be performed

prior to pushing the pipe through the crossing.

18.10 APPENDIX I

LINE TRAVEL COATING SYSTEM RECOMMENDED APPLICATION TENSION

Neckdown tape width (inch)

Roll Body Width (inch) 4 6 9 12 1% neckdown tension 3 31/32 5 15/16 8 29/32 11 7/8 2% neckdown tension 3 15/16 5 7/8 8 13/16 11 ¾

18.11 TESTING


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18.11.1The entire line will be tested by the Contractor with a Company approved holiday detector, which shall be supplied by the Contractor. The holiday detector shall be set as per Company Specifications for applicable coating type. The holiday detector shall be set and operated in such a manner as to mark and audibly indicate the presence of all holidays, pinholes and discontinuities. Speed of travel will be calibrated by checking against “artificial holidays” and shall be approved by Company. All holidays will be repaired to the satisfaction of Company.

18.11.2Holiday detectors must be of the type that can be adjusted.

18.12 REPAIRS:

18.12.1All holidays shall be marked as they are found and repaired prior to the lowering of the pipe at the Contractors expense.

18.12.2Holiday in joint wrappings shall be repaired by removing the field coating in the area of the holiday and re-wrapping at the Contractor’s expense.

18.13 HAND WRAPPING MACHINE

18.13.1The cold applied tape-coating systems using hand-wrapping machines must employ machines capable of maintaining even, constant tension across the width of the tape.

18.13.2The tape coating system shall be applied to the primed section of pipe in either spiral or cigarette configuration, as determined by the end-user specifications. The wrapping process shall be in accordance with the type of application (field joint, patch and repair, bare pipe). Should a tape with a release liner be used, then the release liner should be automatically removed by the hand-wrapping machine prior to the application of the tape to the primed pipe surface. This will prevent contamination of the high tack adhesive.

18.13.3The tape coating system shall be applied under taught hand or machine tension that will result in a smooth, wrinkle free coating. Sufficient tension shall be applied to cause a 1 - 2% neckdown width (reduction in the width of the film or tape). The minimum spiral overlap width shall be 1.9 cm (3/4 inch). Particular attention


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should be afforded to prevent wrinkles in the coating while coating over any irregularities on the surface of the pipe i.e. girth weld areas, other weld seams, etc.

18.13.4A minimum of layers will depend on the nature of the application and in accordance with local of regional standards. For example, a minimum of two (2) layers of polymeric film or tape coating shall be applied over the field joints. If a single layer is required, then a mechanical protection outerwrap layer shall be applied over the single layer of innerwrap.

18.13.5When ditch conditions dictate or when required by end-user specifications, additional layers of the joint coating system can be used. The end of the spiral wrap shall be cut on the downside at the 3 or 9 o'clock position on the pipe.

18.13.6The cold applied coating system materials shall be stored in a facility in accordance with section 12.3 at a minimum ambient temperature of 21°C (70°F) and not to exceed 38°C (100°F). The rolls shall be removed and transported from the storage facility on a daily consumption basis and conveyed to the right-of-way (ROW) in a heated and covered box, vehicle, or sled. The heated box, vehicle, or sled shall be maintained at a minimum of 2l°C (70°F) and not to exceed 38°C (100°F) to insure proper roll body temperature prior to application. The joint coating system shall be stored in the heated vehicle or sled a minimum of 12 hours prior to application and shall be removed directly from the heated vehicle or sled immediately prior to application. The joint coating system SHALL NOT be applied if the coating body temperature is below 16°C (60°F).

18.14 ROCKSHEILD

18.14.1The Contractor shall supply and install rockshield (Tuff-N-Nuff, Grid-Guard, or Company approved equal) under concrete weights, clamps, support pads, and other areas which the Company Representative deems necessary due to the condition of the backfill, e.g. gravel, cobbles.

18.14.2The Contractor shall install the rockshield firmly around the pipe with non-metallic bands not to exceed 16 inch spacing. The rockshield shall completely encircle the pipe with a 6 inch overlap unless otherwise approved by Company.


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19 VALVE INSTALLATION

19.1 Valves, valve boxes and valve pits shall be installed in the locations indicated on the Drawings. The exact location shall be as shown in the Contract Drawings or if changed shall be as designated by Company’s Representative.

19.2 Valves shall be installed in such a manner as to eliminate all strains on the valves and flanges. In no case shall any pipe be jacked or sprung to meet valve flanges. Bolts must fit freely and the use of drift is prohibited. Care must be taken in tightening of the flange bolts to prevent excessive strain. Leaks shall be stopped by replacing gaskets or flanges if marred rather than by taking up on the bolts.

19.3 Valve boxes shall be installed in an upright position properly located over the valve stem. Metallic valve boxes shall be installed in a manner to prevent contact between the box and the valve and/or piping. The top of the valve box shall be located at or slightly above grade.

19.4 Compaction of backfill in and around block valves, side valves, valve boxes, etc. shall be to 90% modified proctor.

20 LAYING AND LOWERING IN

20.1 Padding the Ditch:

20.1.1 The ditch bottom shall have a uniform bearing surface for coated and wrapped pipe. Large clods, stones, or any foreign matter shall be removed. When rock is encountered in the bottom of the ditch, it shall be padded with a minimum of 6 inches of sand or soil for the full length of the rocky section.

20.2 Lowering In:

20.2.1 The Contractor will be required to jeep the entire length of the new pipeline with a Company approved holiday detector. Jeeping and any repair of the coating must take place prior to lowering in.

20.2.2 The line shall be lowered into the ditch immediately following tape wrapping operation and inspection. The Contractor will lower pipe into the ditch using a method that distributes the pipe load uniformly and does not exceed stress limitations of the material or welds at any point during the operation. Refer to


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section 12.13.2. The pipeline shall be lowered into the trench in a manner that will leave slack in the pipeline. Before lowering the pipe into the ditch, all skid marks and other damaged areas shall be repaired.

20.2.3 The line will be supported uniformly and continuously when in the bottom of the ditch to protect the exterior coating.

20.2.4 Coating which is damaged in handling or lowering pipe shall be repaired by Contractor at its cost.

21 CORROSION CONTROL

21.1 Scope

21.1.1 This specification covers the requirements for the design, installation and testing of pipe lead wires, and test stations. All materials for cathodic protection test stations will be supplied by the Company.

21.1.2 This specification is to be followed in conjunction with the Contract Drawings which outline the test station and pipe lead wire details.

21.2 References (Latest Edition and Addenda)

21.2.1 NACE RP-02 The Electrical Isolation of Cathodically Protected Pipe Lines.

21.2.2 API RP-1632 Cathodic Protection of Underground Petroleum Storage Tanks and Piping Systems

21.3 The Contractor shall install a cathodic protection test station in the number and size stated in the Drawings and Specifications. The location will be indicated on the Drawings.

21.4 Cathodic protection test stations are to be installed in accordance with Company Representative’s requirements.

21.5 The cathodic protection test station wire shall be attached to the pipe by the thermite welding process using aluminum powder and copper oxide with a #15 (15 gram) cartridge.


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21.6 All wire connections to pipe should be no larger than #10 AWG. If a wire larger than #10 is required, it shall be solid. No brazing of the wire on pipe will be permitted.

21.7 The cathodic protection test station lead wires shall be securely tied around the pipe prior to the welding of the lead wire. The quality of the weld shall be tested by Company personnel.

21.8 Insulating sleeves shall be installed in flanges without strain being placed on the sleeves. Insulating assemblies shall be tested prior to backfill and any necessary repair shall be made.

15.9 Electrical Lead Wire Materials

15.9.1 Lead wires for test stations shall be furnished and attached to the pipe as described herein and shown on the Drawings.

15.9.2 All conductors shall be copper with Type TW insulation unless otherwise specified.

15.10 Test Station Materials

15.10.1 Above ground stations shall be Cott “Little Fink” test stations and a three-terminal block or approved equal as shown on the Project Drawings.

15.11 Contractor shall be responsible for the installation of all pipe lead wires and test stations as specified. In addition, Contractor shall be responsible for assuring that specified pipe coating is properly installed with field repairs carefully made. Contractor shall verify the fact that all electrical lead wires are firmly attached to the pipe and are accomplishing their intended function. Testing and verification of the electrical continuity of all lead wires and bond wires shall be accomplished in a manner acceptable to the Company’s Representative. All field test stations shall be completely and properly installed as specified before the work is considered complete. It shall be Contractor’s responsibility to repair or replace bonds or test lead attachments found to be defective during the warranty period.


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15.12 Lead Wire Installation

15.12.1 All test station wires to be terminated in above grade test stations are shown on the Drawings. All wires shall be routed at a depth of not less than 36 inches below finished grade and brought to the surface and terminated in field test stations. Sufficient slack in each wire shall be available at the pipeline connection and in the test station box.

15.12.1 Attachment of test station wires to piping shall be by the exothermic weld process.

15.12.2 Each test station wire shall be attached to the pipe on the top centerline. Test wire attachments shall be approximately 24 inches apart unless otherwise specified.

15.13 Exothermic Welding

15.13.1 Exothermic weld details are shown on the Project Drawings. Exothermic welding techniques shall comply with the manufacturer’s recommendations. Only proper size cartridges and welders will be permissible. Materials shall be Cadweld as manufactured by ERICO Products, Inc., Cleveland, Ohio or acceptable equal.

15.13.2 Prior to welding, an area of the structure approximately 3 inches square shall be cleaned to bright metal with a grinder or file.

15.13.3 A copper sleeve shall be installed around the copper wire in the weld area prior to welding to improve the quality of the weld and to increase thermal capacity of the wire in the weld area.

15.13.4 The slag shall be removed from the completed braze with a hammer and file.

15.13.5 The adequacy of each weld shall be demonstrated by sharply striking the top of the connection with a one pound hammer.

15.13.6 The cleaned piping surface, including the weld connection and any exposed copper wire, shall be coated with Polyken primer and tape.


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15.14 Test Station Terminations

15.14.1 Terminations shall be arranged on the test station terminal board as indicated on the Project Drawings for each field test station application.

15.14.2 Connections at test stations for conductor sizes 8 AWG and larger shall be made with single hole terminal lugs of corrosion-resistant copper, bronze, or nickel-plated brass and shall be Blackburn “Type L” (socket) or Square D Company “Type LU”. Conductor sizes 14-10 AWG shall be terminated with a properly sized uninsulated ring tongue compression connector using a calibrated crimping tool designed to crimp the connector. The connector shall not release from the conductor when pulled or twisted. Terminal lugs for cable sizes 14-10 AWG shall be Burndy Hylug “Type YAV Box Ring Tongue” terminals.

15.14.3 Solid conductors shall additionally be soldered in the terminal lug before terminating the lug in the test station.

15.14.4 Permanent, legible identification markers shall be attached to each lead wire in each field test station. Each pipe lead wire shall be identified with company name, pipe diameter, material, and service (gas, water, casing, etc.), as a minimum.

22 BACKFILLING

22.1 Backfilling shall start as soon as possible after the lowering-in operation has been completed to prevent floating of the pipe in case water enters the trench, and to prevent damage to the taping by movement of the pipe caused by temperature changes. All suitable excavated material from the ditch shall be replaced and neatly rounded thereon except when the line crosses traveled roadways, draws and creeks. Except in rock sections, the backfill shall be compacted by making two or more passes over it with a rubber tired motor grader. No foreign material such as broken skids, brush, stumps, welding rod discards or containers, or other debris shall be included in the backfill material. All backfilling operations shall be done in a manner so as to prevent damage to the protective pipe coating and where practicable, a screw auger type machine, power dozer, or other approved equipment shall be used to breakup the backfill, thereby improving consolidation around the pipe. Backfill


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shall be made immediately over all side bends, over bends, and sag bends to anchor the pipe in place. At backfill completion, the Contractor shall achieve a level of 85 percent modified proctor, except in roadways where local compaction requirements apply. Any coating damage occurring during backfill operations shall be repaired at Contractors expense.

22.2 Purchased fill shall be concrete grade sand with less than 15 percent fines.

22.3 Rock, gravel or like material that is greater than 1 inch shall not be backfilled directly onto coated pipe. Contractor shall place sufficient earth or sand and backfill around and over the pipe to form a minimum of 6 inches of protective padding. A mechanical padding machine shall be employed to maximize the use of native backfill material if so directed by the Company Representative.

22.4 Rock shield or double wrapping may be used in lieu of padding with Company Representative approval. Rocks, broken pavement and other debris shall not be placed as backfill in proximity to the pipe.

22.5 Across cultivated fields where completion of the backfill as specified above interferes with farming operations, the backfill shall be compacted, graded and leveled as directed by Company to meet requirements of the land owner or tenant. It may be necessary for openings to be made through the backfill so that excessive rains will not cause water to back up against the backfill and flood cultivated fields.

22.6 Where the pipeline crosses a public or private road using an open cut ditch or due to governmental agencies or soil conditions, that portion of the ditch shall be backfilled immediately after the laying of the line so that the traveling public is not inconvenienced. Final backfill of these crossings shall be thoroughly compacted, in layers of not to exceed 6 inches, each thoroughly tamped into place, and in case of gravel or rock surface roads, the top 6 inches of the backfill shall be made of the same material as the original road. Repairs, as may be necessary to maintain these road crossings in a state of good repair, shall be made at Contractor’s expense. At backfill completion, the Contractor should achieve a level of 90 percent modified proctor on dirt roadways and 95 percent modified proctor on paved roadways.


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22.7 The backfill shall be protected from washing away where necessary by the installation of earth water breakers, by the building of terraces, or by excavation of cross drain ditches to carry any water from rainfall away from the ditch line.

22.8 The Contractor shall reform the banks of minor rivers, streams, ravines, irrigation, drainage ditches or other watercourses and any farm terracing encountered, to the original contours and levels, with the excavated materials. The slope of reformed banks shall coincide with the undisturbed portion of each side when possible. When backfilling at these locations, the Contractor shall provide additional compaction to minimize settlement and prevent slippage and wash outs of backfill. The slope of the backfill should not exceed 1-1/2 to 1.

23 GAS EQUIPMENT INSTALLATION

23.1 Any metering, regulating, gas cleaning dehydrating equipment and all other related above-ground facilities shall be installed and constructed in accordance with the applicable detail drawings included as a part of the Specifications, unless such installation detail is expressly changed in the construction plans.

24 CLEANING THE PIPELINE

24.1 Care shall be exercised by the Contractor when joining the sections of pipe to minimize the possibilities of there being any foreign material within the line after its completion. Any obstructions in the pipeline caused by foreign material shall be removed at the Contractor’s expense.

24.2 The line shall be blown clear of dust with compressed air prior to pigging. Each section of pipeline shall be cleaned by blowing a pig or pigs a sufficient number of times to ensure the removal of all construction dirt, rust scale, and all other foreign material from the pipeline. Fabricated assemblies shall not be placed in the pipeline until the pipeline has been thoroughly cleaned. Each line longer than 500 feet shall have at least one brush pig run through it.

24.3 After the pipeline or measured portions thereof as defined in scope of work, is complete, a pipeline scraper pig in front and two squeegee pigs behind, all furnished by Contractor shall be run through the line at least twice or until the pipeline is clean. The Contractor shall bear the cost of


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all labor, material and other expenses incident to the running of the scraper and squeegee pigs.

24.4 Prior to the pigging operations, the Contractor shall fabricate and install a pig catcher on the end of the line. Acceptable to Company Rep.

24.5 Contractor shall furnish air compressors (having sufficient volumetric rate capability required) to run pigs for cleaning the line.

24.6 Cleaning of the pipeline shall take place prior to any hydrostatic testing.

24.7 Any pipeline fluid waste generated during the pigging operation must be captured and properly containerized. The Company will provide support for waste management and disposal activities.

25 HYDROSTATIC TESTING DRYING AND DEWATERING

25.1 The Contractor shall supply all supervision, labor, equipment, dead weights, pressure gauges, chart recorders, charts, tools, supplies, welding, water, materials and anything else necessary to properly and safely complete all hydrostatic and leak testing. If the test is above 25,000 gallons the contractor shall supply the company a detailed plan of how the test will be conducted, this will include timing of tests in the event that there are multiple sections and where the water will be procured before test to be approved by the company representative. The contractor will not use the pipeline to store water. The contractor will ensure that water is introduced to the pipeline and removed in an expeditious manner.

25.1.1 Pressure recording charts must have documentation that a check was performed with a dead-weight tester or a certified pressure gauge was performed least once each calendar year not to exceed 15 months

25.1.2 The acceptable indicating gauges must have documentation that a check was performed against a certified pressure gauge at least once each calendar year not to exceed 15 months; if the indicating gauge is ±2 psi off of the certified gauge, it must be recalibrated or replaced


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25.1.3 Hydrostatic tests of new pipe must have a total water volume of less than 25,000 gallons. Any tests on old pipe or tests using greater than 25,000 gallons of water will require advanced authorization from the Company.

25.2 It is recommended that pressure in the test segment be applied in increments equal to 25% of the total test pressure; at the end of each incremental increase, the pressure should be maintained while the test segment is checked for leaks. The complete piping system shall be hydrostatically tested for a minimum of 8 hours at a predetermined pressure. The 8 hour period shall not start until the pressure in the pipe has stabilized. This piping should be tested at its fully installed state. The Company Representative shall witness and approve all hydrostatic tests. The Contractor shall repair all leaks.

25.3 The Contractor shall bleed and add water as required to maintain pressure within the test range for all pipe tested. The Company Representative must be present to witness any water additions or removal.

25.4 The Contractor will be required to provide any and all blind flanges, weld connections, test water, fittings, test heads, bolts, gaskets, etc. required to complete the tests as outlined. Prior to any hydrostatic testing, the Contractor shall certify that all test head components, which will be subject to test pressures are in good working condition and meet the working pressure requirements. The Contractor shall design the test heads to provide for pigging operations associated with hydrostatic testing and testing instrumentation. The Contractor is also responsible for the following:

25.4.1 Pipe for filling each test section.

25.4.2 Transporting and purchase of water from the Company approved municipal water source using potable water trucks.

25.4.3 Fill pumps. (Pumps shall be capable of pumping a minimum of 200 G.P.M. at 250 psig head. Contractor shall furnish pump curves for all pumps.)

25.4.4 Self-cleaning 100 mesh strainer filter.


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25.4.5 Pressure pumps capable of pumping a minimum of 60 G.P.M. at 1000 psig.

25.4.6 A minimum of three 2000# pressure recorders (pressure recorders shall have 12 inch charts). Charts must be compatible with the recorders.

25.4.7 Dead-weights for calibration of recorders and for the pressure-volume plots.

25.4.8 Positive displacement meters for filling and pressurizing the pipeline.

25.4.9 Technical personnel approved by the Company Representative. These personnel shall be present at all times during the filling, pressuring, and proof testing of the pipeline.

25.4.10All pigs for filling and dewatering.

19.4.11 Ample radio communication equipment

25.5 Prior to testing the pipeline, backfill shall be complete. The Contractor may break the test into more than one section, upon approval by the Company Representative.

25.5.1 Fill water shall be filtered through a 100 mesh strainer filter when deemed necessary by the Company Representative.

25.5.2 All fill water shall be metered.

25.5.3 The fill pig shall be properly sized and pushed ahead of the fill water to prevent air pockets.

25.5.4 Low pressure-indicating gages or manometers shall be available to aid in analyzing any blockage problems encountered during filling.

25.5.5 Filling will proceed at a constant rate to prevent the formation of air pockets.

25.5.6 Air vents shall be closed off when the fill passes the vent. After the pipe is filled, all vent valves should be opened for a sufficient time to assure that the test section is free of air pockets. After


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water fill of the pipeline, the Contractor is required to allow a 8-hour stabilization period prior to beginning the test.

25.6 The Contractor will be allowed to move test water from section to section provided that the water will be moved by a means that will not cause contamination.

25.7 Discharge of test water on NMGC property or Right-of-Way must follow requirements set forth under the NMGC Annual Discharge Permit issued by the NM Oil Conservation Division.

25.8 The Contractor will be required to provide the labor, materials, equipment and transportation means to move the test water from the end of the line to the disposal location. This could be accomplished with piping supplied by the Contractor.

25.8.1 The Contractor shall furnish oil free air compressors to run pig or pigs for transferring water, dewatering and drying the pipeline.

25.8.2 The Contractor shall remove all water from the hydrostatically tested section by use of a mandrel pig and squeegee pigs. The pipeline will be considered dry only after approval by the Company Representative and the new pipeline yields no water.

25.8.3 A mandrel pig with four cups will be followed by multiple running of low density foam swabs.

19.8.2 After the line is considered dry, Dew Point to – 39 degrees F, a four-cup mandrel pig and brush pig shall be run through the line to confirm cleanliness.

19.9 The Contractor is to provide three original test charts for each section of the pipeline. The test of any one section will be considered acceptable if the test chart for that section does not go below the specified test pressure at the pressure recorder location and no more than 2 pounds per hour loss is encountered during the full test cycle. Contractor shall provide current calibration certification. Contractor shall provide three copies of the final test report which will include the following:

19.9.1 Pressure-volume curves, including the hand plotted curve and pressure-volume tables.


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19.9.2 As tested pipeline profiles showing test pressures and manifold locations.

19.9.3 All information on ruptures and leaks.

19.9.4 All test charts.

19.9.5 A write-up summarizing the test, any problems, final results, and signature of test foremen and inspector.

19.9.6 All test data and charts must have full identification as to location of test, material tested (O.D., wall thickness, grade), and work order number.

19.10 The Contractor shall “soap” test at line pressure all above ground connections (i.e., flanges and threaded connections) in their fully installed state (prior to the new piping being placed in service and prior to application of paint) in order to determine if any leaks exist. The Company Representative shall witness and approve this test. The Contractor shall repair all leaks.

19.11 During a one-year period after the work is completed and the new piping is in service, leak surveys and other inspections will be performed by the Company to determine acceptability. Any leaks or other construction defects/deficiencies encountered will be immediately uncovered, located, repaired and completed by the Contractor at his expense. If the leak or other defect/deficiency is found to be a result of a material manufacturer’s problem, the Company will incur the cost of the repair.:

20 CLEAN-UP OF PIPELINE ROUTE

20.1 As soon as backfill is completed, Contractor shall immediately cleanup the pipeline route and all storage sites. All surplus defective materials and refuse, such as brush, rock, sheet iron, etc., shall be properly disposed of to the complete satisfaction of Company. Insofar as possible, the earth on both sides of the pipeline ditch which has been disturbed during the construction of the pipeline shall be re-contoured to the original condition and left in a condition satisfactory to Company.

20.1.1 In all areas, the final appearance of the right-of-way after final cleanup shall be as required by Company, Right-of-Way


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Agreement or permit, and in general have an appearance as near original as possible.

20.1.2 Permanent repairs to all fences cut or damaged shall be made by using new and like materials. All bridges, culverts, and cattle guards, whether public or private, that are damaged by Contractor’s operations shall be repaired or replaced to the satisfaction of Company.

20.2 Rock taken from the ditch may be replaced, providing no rock is piled on top or near the top of the ditch that would add to the difficulties of plowing, cultivating or grading. Surplus rock removed from the ditch shall be disposed of by Contractor to the satisfaction of Company at the Contractor’s expense. In all areas, the site after final clean-up must be the same as the general surrounding terrain. No rock will be left protruding from the surface within the ditch area along the pipeline route. In rocky areas, the rock will be scattered randomly.

20.3 EXCEPTION

20.3.1 No exceptions to this specification are allowed unless requested in writing from the requesting party and approved in writing by Company.

20.3.2 Any codes, regulations, or laws in a jurisdiction, through which the pipeline passes, which are more stringent than this specification, shall take precedence over this specification.

21 GAS PIPELINE ABANDONMENT

21.1 Description

21.1.1 Underground pipe will be abandoned unless otherwise specified by NMGC. Above ground pipe will be removed and disposed of including demolition of existing gas line, drips, valves and fittings, and removal of materials from site. Contractor shall dispose of all removed materials in compliance with all codes and standards.

21.1.2 Contractor will submit to Company a Plan for purging of the lines. The Plan should include the rate of airflow through each purged section of pipeline as well as a pipeline section purging schedule.


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21.2 Codes, Standards and Related Specifications:

21.2.1 25.1.1 29-CFR-1910 Occupational Safety and Health Standards (OSHA).

21.2.2 25.1.2 29-CFR-1926 OSHA - Safety and Health Regulations for Construction.

21.2.3 OSHA 1926.650, Subpart P - “Excavations, Trenching, and Shoring”.

22 PRODUCTS

22.1 All fittings, hose connections, etc., related to purging, shall be supplied by the Contractor.

22.2 Plate for capping the pipeline shall be 3/8 inch thickness mild carbon steel supplied by Contractor.

22.3 Any inert gases required for the purging process will be supplied by Contractor. Dried air is considered an inert gas.

23 EXECUTION

23.1 Scope of Work:

23.1.1 Approval shall be obtained from the Company Representative prior to Contractor performing any work on the proposed abandoned pipeline.

23.1.2 Contractor shall furnish all equipment and consumable items including nitrogen if so desired, to execute work to completely nitrogen purge the lines of all gas. Air movers and gas detectors may also be utilized for gas removal.

23.1.3 Unless otherwise specified, all aboveground sections of pipeline are to be removed and properly disposed of by contractor.

23.1.4 All openings in the abandoned line shall be seal welded with 3/8” weld plate supplied by the Contractor.

23.2 Cleanup:

23.2.1 Restore grades and elevations to match existing.


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23.2.2 Remove all trash, refuse, welding rods or other by-products of the process and dispose of in a licensed landfill.

23.2.3 Reseed all affected areas per Specification 006 – Reclamation.

24 CAST IN PLACE CONCRETE

24.1 This specification describes cast-in-place concrete floors, foundation walls, pipe supports, supported slabs, miscellaneous structures, floor and slabs on grade, equipment pads, light pole base, and thrust blocks.

24.2 Perform work in accordance with ACI 301.

24.3 Coordinate the placement of joint devices with erection of concrete formwork and placement of form accessories.

25 CODES, SPECIFICATIONS AND STANDARDS

25.1 American Concrete Institute (ACI) Standards:

25.1.1 ACI 301 - Structural Concrete for Buildings.

25.1.2 ACI 304 - Recommended Practice for Measuring, Mixing, Transporting and Placing Concrete.

25.1.3 ACI 305R - Hot Weather Concreting.

25.1.4 ACI 306R - Cold Weather Concreting.

25.1.5 ACI 308 - Standard Practice for Curing Concrete.

25.2 American Society for Testing and Materials (ASTM) Standards

26 MATERIALS

26.1 Concrete shall, in all cases, be proportioned to provide a 28 day compressive strength of 3000 psi. The water content of the concrete shall not exceed 6.75 gallons per sack of Portland cement including water contained in the aggregate. The slump of the concrete when poured in place shall not exceed 5 inches nor be less than 3 inches.

26.2 Portland cement shall comply with ASTM C175 and shall be ASTM Type IA Cement.


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26.3 The aggregate in the concrete shall comply with ASTM C33 and the maximum size of the aggregate components shall not exceed ¾ inch. The combined aggregate composition shall be such that no less than 30 percent nor greater than 50 percent by weight passes a No. 4 standard sieve.

26.4 All concrete shall be air entrained and the cement shall comply with ASTM C175 and C595 as well as ASTM C226. Measurement of the components of all transit-mixed concrete shall comply with ASTM C94. All concrete shall be transit mixed. Ninety percent of necessary water shall be added at the batch plant and the remaining ten percent at the job site utilizing a minimum of 20 revolutions at mixing speed.

26.5 The total time between the initial addition of water to the concrete mixture at the batch plant and the final pouring, placement and compaction at the job site shall not exceed 90 minutes. Any concrete that has begun to set up on the truck or has been on the truck beyond 75 minutes shall not be poured and shall be hauled away and disposed of elsewhere at the Contractor’s expense.

27 EXECUTION

27.1 Immediately after the concrete is poured in place, the concrete shall be quickly vibrated with a mechanical concrete vibrator, rodded, shoveled and tamped in place until no voids exist in the concrete. Vibrators shall not be used excessively to the point that the larger aggregate begins to settle out (segregate) and shall not be used to push or move concrete into place. The concrete shall be poured in its proper location within the forms. Concrete shall not be dropped more than four feet into place when being poured.

27.2 Minimum clearance between any reinforcing steel (rebar or other steel within the concrete) and the surface of any concrete structure, except floor slabs, shall be 2 inches. In floor slabs, the minimum clearance shall be 1 inch. No form snap tie or wire end shall be left within ½ inch of any concrete surface.

27.3 After the concrete has been poured in place and properly finished, the Contractor shall ensure that the concrete is protected from any and all types of damage. The Contractor shall keep the concrete moist to acquire a proper cure by at least 3 days. The Contractor shall ensure that the concrete does not freeze by utilizing tents, space heaters, insulation, etc. for a period of no less than 3 days. Forms shall not be removed until a period of no less


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than 3 days has elapsed. The concrete shall not be subjected to loading, equipment, etc. for a period of at least 7 days.

27.4 All anchor bolts and dowels shall be per ASTM A108 unless otherwise specified. Unless otherwise specified, all rebar shall be per ASTM A615, Grade 40 (deformed billet). Rebar shall be cold bent (no heating or welding) and shall be tied with tie wire.

27.5 All above ground concrete shall be rubbed and all corners chamfered down to one foot below the final soil grade. Any grouting under base plates shall be limited to a maximum 1 ¼ inch thickness.

27.6 All grout shall be mixed with a ratio of 1 part Portland Cement to 3 parts of clean, sharp sand. The grout mixture shall be a “dry” mixture that will allow workability but shall be such that it has to be packed in place and will stand in place on its own without “setting”. All grouted base plates shall be properly shimmed in place with steel plate or strap shims. All shims shall be completely contained within the grout such that a minimum of 1 inch of grout covers all outside edges of the shims. Base plates that are grouted shall be 100% grouted (packed) with no voids under the plates. All grout shall be kept wet and shall be covered with plastic or wet burlap for a minimum period of 3 days. All grout shall be prevented from freezing during the initial 3 day cure period.

27.7 All concrete forms, including cylindrical forms, shall have proper whalers, kickers, framing, braces, templates, etc. All concrete supports shall be properly and accurately centered under the piping or vessel to be supported and all bolts, steel pipe supports, base plates etc. shall be exactly centered within, and on the concrete supports. All concrete shall be square, plumb, level, true and properly located (on cylindrical supports, the concrete shall be completely round throughout).

28 PIPE SUPPORTS

28.1 The Contractor shall be required to purchase and provide all materials and labor to build concrete supports as shown in the Construction Contract Drawing Set. All concrete for the pipe supports shall be in accordance with the items above.

26 CHAIN LINE FENCE SCOPE OF WORK


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26.1 The work covered by this specification includes furnishing all equipment materials, and labor necessary to install permanent chain-link fence. This specification does not cover temporary construction fencing.

27 REFERENCED STANDARDS SPECIFICATIONS

27.1 American Society for Testing and Materials (ASTM):

28 GENERAL

28.1 The fencing Contractor shall be responsible for correctly surveying and staking out fences and gates in regards to location, heights and details as indicated on the Drawings.

28.2 All underground utility locations, pipelines and other underground structures shall be located and marked prior to construction by the Contractor. The Contractor should use the New Mexico One Call System for utility locates.

28.3 Fence fabric, tension wire, and barbed wire shall have the same protective coating.

28.4 Any of the following specifications calling for a specific pipe schedule will be considered satisfied by a cold rolled steel pipe of the same OD and equal or greater strength and stiffness. The Contractor may be required to support, in a form acceptable to the Company, data demonstrating conformance according to ASTM F669 Section 5 or 6.

28.5 Contractors must adhere strictly to specifications. Any change or deviation from these specifications, or any detail in which their product differs from these specifications, must be explained in detail in a separate letter accompanying their bid.

28.6 Company reserves the right to inspect any or all project construction for compliance with this specification.

29 MATERIALS

29.1 Fence Fabric

29.1.1 The steel chain link fabric shall be heavily zinc coated (galvanized) by the hot dip process after weaving.


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29.1.2 Chain link shall be made from No. 9 gauge wire woven into a 2” Type I mesh conforming with Federal Specification RR-F-191/2c and ASTM A-392 Class I.

29.1.3 Both top and bottom selvages to have twisted and barbed finish.

29.1.4 The bottom of the chain link fabric shall not be more than 2 inches above the ground surface (final grade).

29.2 Fence Line Posts

29.2.1 The line posts shall be heavily hot dip galvanized (inside and out).

29.2.2 Posts to be 2.375” O.D., .120 wall TUF-40 tubing weighing 2.28 lbs/ft and shall be in accordance with ASTM A446 GR.D.

29.2.3 One line post shall be set in the exact center of all enclosure sides with lengths greater than 10 feet and up to 20 feet.

29.2.4 Two line posts shall be set to split into exact thirds all enclosure sides with lengths greater than 20 feet and up to 30 feet.

29.2.5 On enclosure sides longer than 30 feet line posts shall be set to divide the length into equal portions not to exceed 10 feet in length and not to be less than 7 feet in length.

29.2.6 No line posts will be necessary on enclosure sides with lengths of 10 feet or less.

29.3 Fence Terminal Posts

29.3.1 The gate terminal posts and corner terminal posts shall be heavily hot dip galvanized (inside and out).

29.3.2 Terminal Posts shall be 2.875” O.D., 0.160” wall, TUF-40 tubing weighing 4.54 lbs/ft except as noted below:

29.3.3 Where 16’ foot gates are used, the gate terminal posts shall be 4” O.D., TUF 40 tubing weighing 6.56 lbs/ft.

29.4 Gates

29.4.1 All personnel gates shall be 3 feet in width.


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29.4.1.1Personnel gates at manned locations shall be fitted with outdoor rated panic bars. Panic bars shall be center mounted on 3/8 inch thick steel plate. The steel plate shall be full gate width and 3’ length.

29.4.2 All vehicle gates shall be double gates with a total width of 12 feet or 16 feet (as shown on drawings).

29.4.3 Gate frames shall be made from 1 7/8” O.D. steel tubing with a minimum wall thickness of 0.120 inches weighing no less than 2.28 lbs/ft.

29.4.4 The tubing frame shall be heavily hot dip galvanized (inside and out).

29.4.5 Frame shall have mortise corner joints for proper fit (hammered pipe end joints will not be acceptable).

29.4.6 The joint welds are to be continuous entirely around the pipe joints and shall be cleaned and coated with zinc-rich paint.

29.4.7 The chain link fabric shall be the same as that for the fence.

29.4.8 Each gate is to be complete with hot dip galvanized malleable iron or pressed steel pipe and socket hinges and a catch (lockable latch).

29.4.9 All hinges shall permit the gate to swing 180 degrees back against the fence.

29.4.10The gate frame shall be made with top, center, bottom, and side “rails” with a 3/8” galvanized truss rod from the top hinged corner to the bottom swing (free) corner.

29.5 Post Caps, Extension Arms and Rails

29.5.1 Posts Caps: All gate and terminal posts shall have galvanized ball post caps.

29.5.2 Extension Arms: All extension arms for barbed wire shall be hot dip galvanized, pressed steel of one solid piece construction.

29.5.3 Each arm shall be of the 45-degree type and shall carry three strands of barbed wire.


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29.5.4 Rails: A 1-5/8” steel tubing rail (brace) shall be placed around the top of the entire enclosure from post to post about 2 inches below the top of the chain link selvage barbs.

29.5.5 Rails are to be securely fastened at each end to the posts with suitable, galvanized, pressed steel connectors.

29.5.6 The 1-5/8” O.D. steel tubing shall have a minimum wall thickness of 0.110” and shall not weigh less than 1.82 lbs/ft. This tubing shall be TUF-40 tubing heavily hot dip galvanized (inside and out).

29.6 Tension Wire, Tension Bands and Bars

29.6.1 Tension Wire: A 7-gauge galvanized tension wire shall be placed around the entire enclosure at and through the bottom of the chain link fabric fence.

29.6.2 Tension Bands and Tension Bars: The chain link fence fabric shall be tied to all terminal posts, gate posts and gate frames using proper galvanized steel tension bars and galvanized steel tension bands.

29.6.3 The tension bands shall be placed one every 12 inches along the length of the frame or post (and tension bar).

29.7 Fittings, Tie Wires and Barbed Wire

29.7.1 Fittings: All fittings are to be hot dip galvanized malleable iron or pressed steel in conformance with ASTM-F626.

29.7.2 Tie Wires: The chain link fence fabric is to be fastened to each line post and rail with galvanized steel tie wires every 18 inches over the length of the rail (brace) or line post.

29.7.3 Razor Wire

5 POST SETTINGS

5.1.1 All posts shall extend at least 2’-10” below the ground surface and shall be set ina concrete footer that is 1 foot in diameter and extends from the ground surface to at least 3 feet below the ground surface.


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5.1.2 The concrete shall be at least 3000# 28-day concrete. Concrete shall be poured when no freezing is possible or shall be completely and properly protected from freezing during the first 72-hour cure period.

6 FINAL PRODUCT

The fence enclosure shall be set on the final grade and the final grade (ground surface)shall be completely level and compacted. The fence enclosure shall be level, plumb, square, straight, true, complete, properly located and properly installed in a first class, workmanlike manner.

SCOPE

29.8 All exposed new and existing piping and steel structures shall be sand blasted, primed and double coat painted as dictated in this specification.

30 SURFACE PREPARATION

30.1 SSPC-SP1 - Solvent Cleaning Solvent Cleaning is a method for removing all visible oil, grease, soil, drawing and cutting compounds, and other soluble contaminants. Solvent cleaning does not remove rust or mill scale. Change rags and cleaning solution frequently so that deposits of oil and grease are not spread over additional areas in the cleaning process. Be sure to allow adequate ventilation. For complete instructions, refer to Steel Structures Paint Council Surface Preparation Specification No. 1.

2.2 SSPC-SP2 - Hand Tool Cleaning Hand Tool Cleaning removes all loose mill scale, loose rust, and other detrimental foreign matter. It is not intended that adherent mill scale, rust, and paint be removed by this process. Mill scale, rust, and paint are considered adherent if they cannot be removed by lifting with a dull putty knife. Before hand tool cleaning, remove visible oil, grease, soluble welding residues, and salts by the methods outlined in SSPC-SP1. For complete instructions, refer to Steel Structures Paint Council Surface Preparation Specification No. 2.

2.3 SSPC-SP3 - Power Tool Cleaning Power Tool Cleaning removes all loose mill scale, loose rust, and other detrimental foreign matter. It is not intended that adherent mill scale, rust, and paint be removed by this process. Mill scale, rust, and paint are


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considered adherent if they cannot be removed by lifting with a dull putty knife. Before power tool cleaning, remove visible oil, grease, soluble welding residues, and salts by the methods outlined in SSPC-SP1. For complete instructions, refer to Steel Structures Paint Council Surface Preparation Specification No. 3.

2.4 SSPC-SP6 or NACE 3 - Commercial Blast Cleaning A Commercial Blast Cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, mill scale, rust, paint, oxides, corrosion products, and other foreign matter. Before blast cleaning, visible deposits of oil or grease shall be removed by any of the methods specified in SSPC-SP1 or other agreed upon methods. For complete instructions, refer to Joint Surface Preparation Standard SSPC-SP6/NACE No. 3.

3 MATERIALS

3.1` Primer

3.1.1 HI-SOLIDS ALKYD METAL PRIMER is a fast drying, high solids, low VOC, rust inhibitive, alkyd primer for steel surfaces, and is free of heavy metal hazards. It is easy to apply by spray and has good resistance to general atmospheric weathering. It can be topcoated with alkyd and latex coatings.

3.2 Topcoat

3.2.1 INDUSTRIAL ENAMEL VOC Complying is a medium oil, alkyd, interior/exterior, all-purpose, lead free enamel. Designed for new construction and maintenance application uses.

4 APPLICATION

4.1 All priming and painting shall be done when the ambient temperature is 40° F or above and rising.

4.2 Primer Application

4.2.1 Once the appropriate surface preparation has been completed, the primer may be applied. Apply one coat of primer at a 2-4 mil dry


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film thickness (dft) Primer shall be allowed to dry completely for a period of 24 hours.

4.3 Topcoat Application

4.3.1 Two coats of paint shall then be applied, each coat at 3-4 mil dft. The first coat shall be allowed to dry for 24 hours prior to the application of the second coat. Care shall be taken not to paint over any nameplate, information plate, vent or sight glass.

4.3.2 All nameplates, information plates, vents, and sight glasses shall be “masked off” with masking tape before painting begins. No overspray onto other items or structures will be allowed. Painting shall be done in calm, dry, warm weather only and proper protection against overspray shall at all times be provided by the Contractor.

4.3.3 All paint shall be applied in a neat, smooth, even, professional manner. No drips, globs, rough or uneven surfaces, bleeding colors, etc. will be allowed. The application of all above ground paint shall be accomplished using paint spray gun equipment.

4 CLEAN UP

4.1 Contractor shall dispose of all used materials, including but not limited to, masking tape, used solvents, empty paint and primer containers, plastic sheeting, used brushes, depleted sand containers, rags, and other consumable items.

29 GENERAL SEEDING REQUIREMENT

30 Scope

31 This specification outlines how areas which have been disturbed due to construction activities are to be reseeded and reclaimed.

32 Apply seed for natural germination as described in this specification.

33 Submittal:

34 Certifications of seed mixture content are required in accordance with the Federal Seed Act, Federal Seed Act Amendments of 1982, and the New Mexico Seed Law.


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35 Timing:

36 Disturbed areas shall be reseeded within 2 weeks of final construction or during the timing envelope as determined by the appropriate governing agency.

37 Seed Mixture: Per required permitting specifications in the Permit Section.

38 SPECIAL SEEDING REQUIREMENT

39 There shall be NO primary or secondary noxious weeds in the seed mixture.

40 Seed labels from each bag shall be available for inspection.

41 Compacted areas shall be ripped to a depth of 12 inches and disced to a depth of 6 inches before seeding. Seed with a disk-type drill with two boxes for various seed sizes. The drill rows shall be 8 to 10 inches apart. The seed shall be planted at not less than ½ inch deep or more than 1 inch deep. The seeder shall be followed with a drag, packer, or roller to ensure uniform coverage of the seed, and adequate compaction. Drilling shall be done on the contour where possible, not up and down the slope.

42 Where slopes are too steep for contour drilling a “cyclone” hand seeder or similar broadcast seeder shall be used. Seed shall then be covered to the depth described above by whatever means is practical, i.e., hand raked. If the seed is not covered, the prescribed seed mixture amount (pounds/acre/PLS) will be doubled.

43 Seeding shall be repeated if a satisfactory stand is not obtained as determined by the Company upon evaluation after the second growing season.

44 The cost of seeding or reseeding will include the return to job site and no extra payment will be allowed.

45 All reseeded areas will be mulched with certified weed free straw or native grass hay at the rate of 2 tons /acre. All mulching will be crimped into the soil.

46 CLEAN UP

47 The Contractor shall ensure that all empty seed bags, any baling twine or wire, and other garbage is removed from the Right-of-Way and disposed of properly

48 END OF SPECIFICATION

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