Well Completion Report for Aquifer-Monitoring Wells CFA ... · Well Completion Report for...

ICP/EXT-05-00777

Well Completion Report

for Aquifer-Monitoring

Wells CFA-1931 and

CFA-1932 at the Central

Facilities Area Landfill

June 2005

ICP/EXT-05-00777Revision 0

Project No. 23364

Well Completion Report for Aquifer-Monitoring Wells CFA-1931 and CFA-1932 at the

Central Facilities Area Landfill

June 2005

Idaho Cleanup Project Idaho Falls, Idaho 83415

Prepared for the U.S. Department of Energy

Assistant Secretary for Environmental Management Under DOE-NE Idaho Operations Office

Contract DE-AC07-05ID14516

iii

ABSTRACT

This Well Completion Report documents recent drilling and well

construction activities conducted near the Central Facilities Area at the Idaho

National Laboratory. The report summarizes the work performed and data

gathered from December 6, 2004, through March 17, 2005. This project

consisted of the drilling and installation of two new aquifer-monitoring wells

adjacent to the Central Facilities Area Landfills I and II. The wells were drilled

into the Eastern Snake River Plain Aquifer at depths of 548 and 568 ft below

land surface. The drilling and installation activities described in this document

will help provide monitoring points in the aquifer adjacent to the landfills. Two

vapor ports were installed in each well to monitor contaminant migration.

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CONTENTS

ABSTRACT.................................................................................................................................................iii

ACRONYMS..............................................................................................................................................vii

1. INTRODUCTION.............................................................................................................................. 1

2. BACKGROUND................................................................................................................................ 1

2.1 Site Background .................................................................................................................... 1

2.2 Environmental Setting........................................................................................................... 6

2.3 Geological Setting ................................................................................................................. 6

2.4 Hydrology.............................................................................................................................. 6

3. WORK PERFORMED....................................................................................................................... 7

3.1 Drilling and Equipment Used................................................................................................ 7

3.2 Geological Logging ............................................................................................................... 8

3.3 Geophysical Logging............................................................................................................. 8

3.4 Well Installation .................................................................................................................... 9

3.4.1 Vapor Port Installation ........................................................................................ 9

4. END OF WELL REPORT ............................................................................................................... 10

4.1 CFA-1931 End of Well Report............................................................................................ 10

4.1.1 General .............................................................................................................. 10

4.1.2 Drilling and Completion Observations ............................................................. 11

4.1.3 Drawings ........................................................................................................... 14

4.2 CFA-1932 End of Well Report............................................................................................ 14

4.2.1 General .............................................................................................................. 14

4.2.2 Drilling and Completion Observations ............................................................. 15

4.2.3 Drawings ........................................................................................................... 17

5. REFERENCES................................................................................................................................. 17

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Appendix A—CFA-1931 and CFA-1932 Lithology .................................................................................. 19

Appendix B—General Well Information for CFA-1931 and CFA-1932 ................................................... 27

Appendix C—Data Completion Diagrams for CFA-1931 and CFA-1932................................................. 29

Appendix D—Project Photos of CFA-1931 and CFA-1932....................................................................... 37

FIGURES

1. Location of the Central Facilities Area at the Idaho National Laboratory ......................................... 2

2. Map of new well locations and the Central Facilities Area landfills at the Idaho National

Laboratory .......................................................................................................................................... 3

3. CFA-1931 well location adjacent to Landfill 2 .................................................................................. 4

4. CFA-1932 well location adjacent to Landfill 1 .................................................................................. 5

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ACRONYMS

bls below land surface

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

CFA Central Facilities Area

CFR Code of Federal Regulations

CITRIC Critical Infrastructure Test Range Complex

DR dual rotary

ESRP Eastern Snake River Plain

HASP health and safety plan

INEEL Idaho National Engineering and Environmental Laboratory

INL Idaho National Laboratory

INTEC Idaho Nuclear Technology and Engineering Center

OD outside diameter

SPC specification

SRPA Snake River Plain Aquifer

USC United States Code

USGS United States Geological Survey

1

Well Completion Report for Aquifer-Monitoring Wells CFA-1931 and CFA-1932 at the

Central Facilities Area Landfill

1. INTRODUCTION

Two new aquifer-monitoring wells were drilled and completed immediately south of Central

Facilities Area (CFA) Landfills I and II near the CFA at Idaho National Laboratory (INL) (formerly the

INEEL [Idaho National Engineering and Environmental Laboratory]) (Figures 1 and 2). The wells were

installed to provide monitoring points in the aquifer adjacent to the landfills. The monitoring points will

be used to determine if contaminants in the landfill are migrating into the Eastern Snake River Plain

(ESRP) Aquifer. Two vapor ports also were installed in each well to monitor for contaminant migration

within the vadose zone.

The two wells drilled into the aquifer are CFA-1931 and CFA-1932. Well CFA-1931 was drilled at

the southeastern edge of Landfill II, approximately 100 ft south of the landfill and 44 ft southwest of

Well ICPP-1798 (Figure 3). This well was drilled to a total depth of 566 ft below land surface (bls) and

was constructed with 6.5-in., stainless steel screen and well casing. The screen interval is 480 to 520 ft bls

(40 ft) with a slot size of 0.05 in. The water level in this well was measured to be 484 ft bls.

Well CFA-1932 was drilled at the southern edge of Landfill I, approximately 150 ft south of the landfill,

31 ft south of West Portland Road, and 31 ft north of the high-voltage power line—138 kV Pit 9 line

(Figure 4). A high-voltage work permit was required for this location during the drilling, completion, and

development of this well. This well was drilled to a total depth of 548.5 ft bls and was constructed with

6.5-in., stainless steel screen and well casing. The screen interval is 485 to 525 ft bls (40 ft long) with a

0.05-in. slot size. The water level in this well was measured to be 490.9 ft bls. Two vapor ports were

installed in both wells within permeable zones above the aquifer to monitor contamination migration. The

completion of both wells included the installation of five-horsepower pumps and three-phase motors that

were tested at a pump rate of 18 gpm.

2. BACKGROUND

2.1 Site Background

Idaho National Laboratory is located in southeastern Idaho, with an eastern boundary located

approximately 32 mi west of Idaho Falls, Idaho. As shown on Figure 1, the CFA is located in the

south-central portion of INL. The CFA has been used since 1949 to house various support services for all

operations at INL, including administrative offices, research laboratories, a cafeteria, emergency and

medical services, construction and support services, workshops, warehouses, vehicle and equipment

pools, and a bus system. The types of Comprehensive Environmental Response, Compensation, and

Liability Act (CERCLA) (42 USC § 9601 et seq.) remedial sites at CFA include tanks, dry wells, disposal

ponds, a soil contamination area, a sewage plant, and landfills.

The CFA Landfill I was originally a quarried gravel pit that was used as a disposal area for

Sitewide waste sometime after 1949. Waste was discarded in the landfill from the 1950s until 1984. The

depth of the landfill is estimated to be 12–15 ft bls. The CFA Landfill II is located in the southwest corner

of an abandoned gravel pit. It received waste from September 1970 until it closed in September 1982. The

depth to basalt at this landfill varies from 15 to 37 ft bls. The landfill waste ranges in depth from 12–28 ft

(ICP 2004).

2

Figure 1. Location of the Central Facilities Area at the Idaho National Laboratory.

3

Figure 2. Map of new well locations and the Central Facilities Area landfills at the Idaho National

Laboratory.

4

CFA-1931

New Well Location

Figure 3. CFA-1931 well location adjacent to Landfill 2.

5

New Well Location

CFA-1932

Figure 4. CFA-1932 well location adjacent to Landfill 1.

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2.2 Environmental Setting

The surface of INL is relatively flat with the predominant relief manifested either as volcanic buttes

jutting from the desert floor or as unevenly surfaced basalt flows, flow vents, and fissures. With the

exception of the buttes on the southern border of INL, elevation levels at INL range from 4,790 ft in the

south to 5,913 ft in the northeast, with an average of 5,000 ft above sea level (Irving 1993). The elevation

near the CFA is approximately 4,940 ft. The area is classified as a semiarid sagebrush desert with

precipitation of 9 to 13 in./yr. Yearly temperatures are consistent with western mountain valleys. Warm,

dry summers followed by cold winters on the relatively flat topography help to develop frequent gusty

winds throughout the year.

2.3 Geological Setting

The CFA landfills are located on the ESRP, in the Big Lost River alluvial deposits overlying basalt

bedrock. The sediments composing these deposits are thin, silty sand top soil (loess) deposits overlying a

thick, primarily alluvial sand and gravel deposit. The depth to the basalt in this area ranges from 10 to

37 ft bls.

The Snake River basalt that underlies the surface sediment is a thick sequence of interfingering

basalt flows that contain interbedded sediments of clay, silt, sand, and gravels. The average basalt-flow

thickness is 20 ft. The basalt varies from being highly vesicular to very dense and from highly fractured

to massive. Occasional cinder zones of pyroclastic deposits represent near source vents.

The fine-grained sedimentary interbeds that are present between some basalt flows are the result of

deposition during periods of volcanic quiescence. Several sedimentary interbeds have been identified near

the CFA. The composition of the interbeds consists mainly of silty sand, clayey sand, sand, silty sandy

gravel, and sandy gravel. The interbeds in this area range in thickness from 1 to 17 ft thick. Two relatively

continuous interbeds are located at the approximate depths of 50 and 130 ft bls. A third, laterally

discontinuous interbed in the area of CFA is occasionally present at approximately 200 ft bls. An interbed

interval correlated in the southern portions of INL known as the 240-ft interbed was present in CFA-1931

as a 1-ft interbed at 254 ft bls. Several other interbeds (2 to 14 ft thick) were encountered at varying

depths below 300 ft bls in the two wells drilled, but all tend to be laterally discontinuous.

2.4 Hydrology

Surface hydrology at INL includes water from three streams that flow intermittently onto the INL

Site and water from local runoff caused by precipitation and snowmelt. Most of INL is located in the

Pioneer Basin into which three streams drain (i.e., the Big Lost River, the Little Lost River, and

Birch Creek). These streams receive water from mountain watersheds located to the north and northwest

of INL. Stream flows often are depleted before reaching INL by irrigation diversions and infiltration

losses along stream channels. The Pioneer Basin has no outlet; therefore, when water flows onto the INL

Site, it typically either evaporates or infiltrates into the ground (Irving 1993). However, no significant

surface water features are present at or near the CFA.

Subsurface hydrology at INL is discussed as three components: (1) the vadose zone, (2) perched

water, and (3) the Snake River Plain Aquifer (SRPA). The vadose zone, also referred to as the unsaturated

zone, extends from the land surface down to the water table. The water content of the geologic materials

in the vadose zone commonly is less than saturation, and water is held under negative pressure.

Unsaturated conditions exist both above and below observed perched groundwater bodies.

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Perched water bodies are formed by vertical, and to a lesser extent, lateral migration of water

moving away from a source until a low hydraulic conductivity layer is encountered. The absence of

perched water could be related to the sedimentary interbeds that appear to be discontinuous and limited in

areal extent. More likely, perched water has not developed beneath the CFA and surrounding area

because of insufficient volumes of infiltrating water. The spring snowmelt would be the greatest source of

water available for infiltration throughout the vadose zone.

The SRPA is defined as the saturated portion of a series of basalt flows and interlayered pyroclastic

and sedimentary materials that underlie the ESRP. The SRPA at INL ranges from approximately

200 ft bls in the north to more than 900 ft in the south (Irving 1993). The SRPA is recharged primarily by

infiltration from rain and snowfall that occurs within the drainage basins surrounding the ESRP and from

deep percolation of irrigation water. Annual recharge rates depend on precipitation, especially snowfall.

The top of the SRPA at the CFA is approximately 485 ft bls.

3. WORK PERFORMED

The Drilling Services Division of Dynatec Corporation of Salt Lake City, Utah, was contracted to

perform drilling and well construction of the CFA-1931 and CFA-1932 wells. The “Drilling and

Installation of Two Aquifer Monitoring Wells for the Central Facilities Area Landfill” (SPC-604)

provided (a) technical and functional requirements needed to perform the work in a responsible manner,

(b) the guidelines for design parameters, and (c) funding authorization for the borehole from surface soils

to basalt bedrock and total depth drilled.

In accordance with the requirements presented in the “Occupational Safety and Health Standards”

(29 CFR 1910) and “Hazardous Waste Operations and Emergency Response” (29 CFR 1926.65), the

Health and Safety Plan for the Long-Term Stewardship Sitewide Monitoring (INEEL 2004) was reviewed

and followed during this project. This Health and Safety Plan governed the execution of all fieldwork

performed by INL employees and subcontractors. The Health and Safety Plan was reviewed and signed

by all members of the project team performing work at the site. Each contractor provided a job safety

analysis. The contractor personnel reviewed and signed the job safety analyses, which were kept on file

at the job site along with a copy of a daily prejob briefing attendance record.

3.1 Drilling and Equipment Used

The drill rig used for this project was the Foremost DR-24 dual rotary (DR) reverse-circulation, air

rotary drill rig. This drill rig has two drives: (1) a top-head drive for advancing the carbide-button hammer

bit and drill rods and (2) a lower drive for advancing the DR casing. During drilling, a 7-in., dual-wall

drill pipe was used to advance various-sized hammers and bits. The DR casing used was 16-in. carbon

steel with a 16.5-in. cutting shoe advanced to the top of the basalt to stabilize the borehole throughout the

surface soil and overlaying fluvial gravels. This casing was replaced with 12.5-in. carbon steel surface

casing, including a 3-ft monument stickup during surface completion.

Other equipment supplied by the drilling contractor included a Hurricane 755 vacuum system, a

frac tank and cyclone, an auxiliary air compressor, boom truck, water truck, forklift, supply trailers,

cement mixer, and pickup trucks. The boom truck and forklift were used to transport and unload drill

rods, casing, and well construction materials. The boom truck also was used in raising and lowering steel

tremie pipe while building the wells. Details of drilling and the equipment used are found in Section 4 and

in the General Well Information forms found in Appendix B.

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3.2 Geological Logging

Drill cuttings samples were retrieved throughout the drilling of both wells for the purposes of

describing the lithology encountered. Drilling conditions and rate of penetration also were observed in the

interpretation of lithology changes and zones of fractures and rubble and to determine the progress of the

drilling. The reverse-circulation method allowed for depth-accurate collection of drill cuttings because of

their near-immediate return to the surface and the elimination of cuttings mixing using this method.

Cuttings were collected from the cyclone discharge at (approximate) 5-ft intervals, or when there

was a change in rock type or drilling rate. They were described by the rig geologist and documented in the

Record of Rotary Drillhole Logbook on log forms bound in the book. Rock descriptions commonly

included colors in reference to the Munsell soil color charts, density, accessory minerals, vesicle

frequency, fractures, and alteration. Surficial soils and sedimentary interbed materials were described in

general accordance with the Unified Soil Classification System. Lithologic descriptions of CFA-1931 and

CFA-1932 are found in Appendix A. Lithologic logs are included in the data completion diagrams in

Appendix C.

3.3 Geophysical Logging

The United States Geological Survey (USGS) performed geophysical and video logging of both

wells drilled for this project. When the boreholes were drilled to a total depth, the drill string was

removed from the borehole and a video camera was used to log the boreholes from surface to total depth

drilled. A small, portable, onsite camera was used for down-hole surveillance when the USGS was

unavailable. In addition to video logging, natural gamma and caliper logs were selected to enhance the

geologic data obtained during drilling. Because of unstable borehole conditions in CFA-1931, however,

the caliper log was not used. The neutron, gamma-gamma log, and well bore deviation gyro log were run

inside the 6.5-in. well casing and screen in both wells prior to the submersible motor/pump installation.

The following is a summary of each type of log and how the data are used for well construction:

Video log—provides a visual record of the hole with accurate depth control using a down-hole

video camera. The video supplemented the cuttings’ logging and observations made during the

drilling process. It also provides visual verification of fractured zones, rubble zones, interbeds, and

moist/wet zones. In addition, it shows the depth of down-hole obstructions due to annular caving.

Natural gamma log—measures the natural gamma emissions from the strata. Sedimentary interbeds

containing clay minerals are somewhat easily identified because of their potassium-40 content,

which emits higher natural gamma radiation than the surrounding basalts.

Caliper log—records the borehole diameter (and changes in the diameter). It provides

depth-discrete data showing increases in the hole size, which are generally correlated to

interbeds or rubble zones. Some fractured zones also can be seen on the caliper log, if significant.

Neutron log—measures the hydrogen ion concentration in a formation. In clean formations

(i.e., clay/shale-free) where the porosity is filled with water or oil, the neutron log measures

liquid-filled porosity. The depth of the water table shows up very well.

Gamma-gamma log—is an active source of gamma radiation (cesium-137 or cobalt-60) that

measures the amount of back-scattered radiation based on the electron density of the surrounding

formation. The gamma-gamma log can be used to calculate the porosity when the fluid and grain

densities are known.

9

Gyro deviation log—records the borehole vertical deviation with the corresponding true depth

using magnetic azimuth and declination for oriented down-hole drift distance.

The USGS and the Hydrogeologic Data Repository/Comprehensive Well Inventory of INL keep all

copies of the videotapes and geophysical logs. The geophysical log profiles are shown in Appendix C.

3.4 Well Installation

Well installations of CFA-1931 and CFA-1932 took place at the completion of drilling in each

borehole. The installation process typically consisted of the following steps:

1. Drilled a 15-in. well bore to top of basalt at 10 and 23 ft bls (advancing the 16-in. DR casing with a

16.5-in. cutting shoe while drilling).

2. Continued drilling to 566 and 548.5 ft bls (CFA-1931 was drilled with a 15-in. bit from 23 to

247 ft bls and then with a 10-in. bit to 566 ft bls). The well bore was later reamed to 15 in. from

247 to 548 ft bls (CFA-1932 was drilled to 548.5 ft with a 15-in. bit).

3. Removed drill string for video and geophysical logging (natural gamma and caliper).

4. Lowered steel tremie pipe down hole, followed by installing 6.5-in. stainless steel screen and well

casing (with attached vapor ports).

5. Moved drill rig off well bore and replaced it with boom truck.

6. Placed annulus materials while removing tremie pipe from well bore.

7. Moved drill rig back on location to remove 16-in. DR casing, replacing it with 12.5-in. surface

casing with 3-ft stickup (continued adding annulus material to surface).

8. Logged inside of well casing and screen with geophysical logs (gamma-gamma and neutron) and

gyro-deviation log.

9. Cleaned and developed well (CFA-1931 was jetted and purged to clean out fine cuttings and

sediment from the well screen).

10. Installed submersible pump/motor and conducted pump test (both pumps were tested at 18 gpm for

approximately 250 gal of water pumped to the surface).

Section 4 summarizes the construction of each well. In addition, the General Well Information

form found in Appendix B details all of the materials used to construct the well and the depths of

materials and vapor ports installed for each well. As-built diagrams for each well are provided in

Appendix C.

Because of the nature of the well installations, the wells were completed using both drill rig and

boom truck. When the drilling was completed at CFA-1931, the drill rig was moved off the borehole to

allow the drill rig to continue drilling at CFA-1932.

3.4.1 Vapor Port Installation

Vapor ports were placed at target depths in permeable intervals within the vadose zone based on

evaluation of the borehole video and geophysical and lithologic logs. Two fractured zones were identified

in each of the wells (CFA-1931 and CFA-1932) within highly fractured basalt intervals. The first zone

10

was just above the aquifer and the second zone was below the interbeds associated with a locally

identified interbed at approximately 240 ft bls.

The perforated section of the vapor ports was attached to the 6.5-in. stainless steel well casing. This

was used as the carrier pipe. Stainless steel clamps were used to attach the perforated 5-ft interval of the

vapor port. While the well casing was lowered into the borehole plastic, well tape (2-in. wide) was used at

10-ft intervals to attach the 3/8-in. stainless steel tubing to the carrier pipe (to the surface). Careful

attention was given to keep the tubing as tight as possible to the carrier medium to minimize scraping or

catching of the tubing on the borehole wall during installation. Annulus materials for the vapor ports

consisted of 6 9 and 8 12 silica sand with dry granular bentonite between the monitoring zones to

isolate the sampling depths from one another. Annulus materials were placed through a tremie pipe to

ensure accurate placement.

The vapor sampling port is comprised of a 5-ft-long interval of 3/8-in. diameter, stainless steel

tubing with 1/16-in. holes drilled 1 in. apart through the tubing, with the holes offset 90 degrees from

each other every inch. This sampling port was attached to 3/8-in. stainless steel tubing that extends to land

surface.

4. END OF WELL REPORT

This section provides a daily summary of drilling and completion activities at Wells CFA-1931 and

CFA-1932, located adjacent to the CFA landfills (Figures 2, 3, and 4). It also provides information related

to work documents, the drilling company, personnel involved in the project, drilling and completion

equipment, materials used in building the wells, and problems encountered.

4.1 CFA-1931 End of Well Report

4.1.1 General

Project Name:

Drilling and Installation of Two Aquifer Monitoring Wells for the Central Facilities Area Landfill.

Well Number:

CFA-1931.

Hole Location:

Within 100 ft of the southern edge of CFA Landfill II

Northing: survey pending Easting: survey pending

Elevation: survey pending.

Implementation Plans:

“Drilling and Installation of Two Aquifer Monitoring Wells for the Central Facilities Area

Landfill” (SPC-604)

Health and Safety Plan for the Long-Term Stewardship Sitewide Monitoring (INEEL 2004).

11

Logbooks:

ER-215-2004, Environmental Restoration Department Record of Rotary Drillhole, pp. 12–94,

205–211, and 229–237

ER-214-2004, Environmental Restoration Department Field Team Leader’s Daily Logbook,

pp. 1–50.

4.1.2 Drilling and Completion Observations

Drilling Company:

Dynatec Drilling Incorporated; Salt Lake City, Utah.

Field Superintendent:

Frank Hight.

Drillers:

Luis Rosario and Gary Jensen (drillers), Hayes Jensen, Tony Andersen, Trevor Andersen, and

Chris Hight (drillers’ helpers).

Geologists:

Dave Bates, Gary Oberhansley, and Erik Whitmore (North Wind, Inc.).

Field Team Leader:

Lori Lopez (BBWI).

Drill Rig Type:

Foremost DR-24.

Drill Bit Type:

16.5-in. DR casing shoe from surface to 23 ft bls, 15-in. carbide button bit with 10-in. hammer

from surface to 548 ft bls, 10-in. carbide button bit with 8-in. hammer from 548 to 566 ft bls.

4.1.2.1 Drilling Activity. A crew of one driller and two helpers (day crew) began work on this well

on December 8, 2004. On December 9, 2004, a second crew of one driller and two helpers (night crew)

began work on this well. Both crews worked 12-hour shifts, with shift changes occurring at 0700 and

1900 hours. Two field geologists were assigned to provide drilling oversight, logging, and completion of

this well (one for the day crew and one for the night crew). A field team leader oversaw and coordinated

all aspects of this project. A health and safety officer and industrial hygienist also were assigned to

oversee all health and safety aspects of the drilling program.

On December 8, 2004, the exclusion zone surrounding the drill rig was set up at the CFA-1931

well location. Drilling began at 0800 hours that day. The initial drilling utilized a 15-in. button bit air

hammer with associated drilling rod while driving 16-in. (outside diameter [OD]) DR casing, which had a

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16.5-in. button cutting shoe. Cuttings were routed through the drill string and into a “Dust Hog” with a

cyclone hopper positioned over a covered frac tank. One auxiliary air compressor (Sullair 900XH) was

used during the initial drilling. Surface soils, consisting primarily of silty sands and gravels, were drilled

through to 23 ft bls where basalt was encountered. The 16-in. DR casing was then set at 23 ft bls, and

drilling with only the 15-in. button bit air hammer continued.

The 15-in. borehole was drilled from 23 to 247 ft bls through basalt and interbeds. Interbeds were

encountered at the following intervals: 50 to 61 ft bls (silty sand [SW]), 131 to 138 ft bls (silty-clayey

sand [SM-SC]), and 140 to 142 ft bls (silty-clayey sand [SM-SC]). The basalt drilled in this interval was

vesicular to massive, fractured in part, and dry.

Drilling with the 15-in. bit was stopped at 247 ft bls on the morning of December 10, 2004. The

15-in. bit was exchanged for a 10-in. bit and drilling resumed. The 10-in. borehole was advanced to the

total depth of 566 ft bls through basalt and interbeds. Water was used as a drilling fluid additive

beginning at 366 ft bls. Interbeds were encountered at the following intervals: 376 to 390 ft bls (clayey

silt [SM/SC]) and 445 to 446 ft bls (silty sand [SM]). The basalt drilled in this interval was vesicular to

massive, fractured in part with several rubble zones observed. Total depth with the 10-in. bit was reached

at 566 ft bls at 2152 hours on December 10, 2004.

Shortly after reaching total depth, the drill string became stuck in the borehole by debris that had

fallen above the bit. The drilling crew spent the next two shifts retrieving the drill string. On the evening

of December 11, 2004, the drilling crew tagged the hole bottom and discovered it to be bridged at

439 ft bls. The crew then tripped the 10-in. bit string down the borehole and cleaned the borehole to total

depth. A video log was run on December 13, 2004, that revealed a severe dogleg in the borehole at

385 ft bls. The video logger could not move past the dogleg. The decision was made to ream the borehole

to 406 ft bls with the 15-in. bit, exchange with the 10-in. bit, and continue reaming the borehole to total

depth. These attempts did not prove successful in removing enough slough from the borehole. On

December 14, 2004, the decision was made to advance the 15-in. borehole to 546 ft bls and heavily ream

the borehole to remove enough cuttings/slough to set the well (a second auxiliary air compressor was

employed in this effort). The 15-in. borehole was advanced and reamed to 548 ft bls by late evening on

December 15, 2004.

4.1.2.2 Summary of Well Construction Procedures. Well construction began at CFA-1931 in

the early morning of December 16, 2004. The well screen was installed in the borehole by late morning of

that day. The well consists of 6.5-in. OD, stainless steel casing (Schedule 10) from 2.5 ft above land

surface to 480 ft bls. The 6.5-in. wire-wrapped, stainless steel well screen (0.05-in. slot) was set at 480 to

520 ft bls with a 6-in. end cap. Both casing and well screen sections have threaded connections. Two

vapor ports were installed in the well bore at 295 to 300 ft bls and 470 to 475 ft bls (vadose zone). The

vapor ports were attached to the stainless steel casing with stainless steel clamps and connected to 3/8-in.

stainless steel tubing, which was run from the vapor ports to 4 ft above land surface and attached to the

stainless steel casing with 2-in. pump tape at 10-ft intervals.

While setting the well screen to the prescribed depth, workers noted that the last 8 ft lowered more

slowly into place (i.e., the screened section from 512 to 520 ft bls). This suggested that the lower 40 ft of

the well bore contained cuttings and/or slough. After placing approximately 35 50-lb bags of 6 × 9

Colorado silica sand through the tremie, the sand was tagged at about 450 ft bls. Workers then tagged the

inside of the 6.5-in. well casing at 513 ft bls, which indicated that the well casing was set in basalt

cuttings and/or interbed slough. The drillers spent the December 16, 2004, night shift and a few hours of

the following day shift using a sand pump to remove the material inside the well casing and from the

borehole annulus. (Note: a 0.5-slot well screen was installed, allowing for significant fines to pass from

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the borehole into the well screen during development.) An estimated 2,250 gal of water and fine sediment

was bailed over a period of 15 hours.

In the morning hours of December 17, 2004, the drill rig was moved offsite and a boom truck was

set up on CFA-1931 to finish building the well. From December 17, 2004, forward, only a single

day-crew worked on the final construction of CFA-1931. In the morning of December 18, 2004, the crew

began using an airlifting technique to clean out the well screen and surrounding borehole annulus. By the

afternoon of December 19, 2004, the airlifting was successful in removing a great deal of cuttings/slough

from the borehole and screen. An estimated 18,000 gal of water was blown to the surface flowing at an

average of 20 gpm for a period of 15 hours. The sand was tagged in the annulus at 499 ft bls (prior to air

lifting, the sand had been tagged at 450 ft bls).

Well construction on CFA-1931 continued on December 19, 2004. Filter pack (6 × 9 Colorado

silica sand) was placed to 450 ft bls followed by granular bentonite to 303.5 ft bls. Additional filter pack

(8 × 12 Colorado silica sand) was placed from 303.5 to 290 ft bls followed by granular bentonite to

179 ft bls. Additional bentonite seal (3/8-in. chips) was then placed to 29 ft bls.

The USGS ran the gyro-deviation log inside the 6.5-in. well casing on December 21, 2004. Well

bore deviation is 12.7 ft northeast at 504.94 ft bls. On January 10, 2005, the USGS logged the well inside

of the 6.5-in. well casing and screen. The video camera was run first to inspect the casing and screen. The

camera showed sediment in the bottom of the screen at 519.3 ft bls (0.7 ft of sediment fill). Both casing

and screen appeared to be in good condition. The gamma-gamma and neutron logs were then run down

the well casing.

On January 13, 2005, the drill rig was moved back on location and the driller tagged the annulus at

23 ft bls. During the well development activities following December 19, 2004, 6 ft of fine cuttings and

sediment was deposited on top of the bentonite seal, bringing the annulus material to a depth of 23 ft bls

on January 13, 2005. The drillers added bentonite seal (3/8-in. chips) to 17 ft bls and removed the 16-in.

DR casing and replaced it with 12.5-in. carbon steel surface casing. The 12.5-in. surface casing was set at

17 ft bls with 3 ft of stickup on the surface for a protective well monument. Additional bentonite seal was

added to the annulus from 17 ft bls to ground surface between both the well casing and surface casing and

between the surface casing and annulus.

The following Tuesday (January 18, 2005), the drillers used the boom truck to install a

five-horsepower, three-phase submersible pump and motor down the well connected to the 1.23-in.

stainless-steel riser pipe. The top of the motor/pump was measured at 505 ft bls, which places the intake

at 506.9–507.1 ft bls and the bottom of the pump at 510.1 ft bls. A weep hole was drilled in the riser pipe

at 18.5 ft bls. A 1-in. stainless steel pipe was installed in the well at 492.2 ft bls for a water access line.

The pump was then tested at 18 gpm for approximately 252 gal of water to the surface. The water level

was measured to be at 484 ft bls. A locking 12.5-in. well cap was placed on the surface casing.

The surface completion for CFA 1931, including installation of a concrete pad, brass monument,

and three impingement posts, was installed on March 17, 2005.

4.1.2.3 Problems Encountered and Lessons Learned. The “Drilling and Installation of

Two Aquifer Monitoring Wells for the Central Facilities Area Landfill” (SPC-604) directed the drillers

to downsize the well bore at an anticipated interbed at 240 ft bls. The well bore was downsized from 15 to

10 in. at 247 ft bls. The well was then drilled to 566 ft bls. Because of well bore conditions with rubble

zones at 292 ft bls and 324 ft bls, and thick interbeds at 371 ft bls and 435 ft bls, a severe dogleg in the

well bore occurred below the thick interbed as recognized with video cameras and tag line. The well bore

was reamed with a 15-in. bit to 406 ft bls to solve the problem of the doglegs. A video camera detected a

14

large piece of fractured basalt covering the well bore at 405.7 ft bls where the well bore downsized to

10 in. Again, the well bore was reamed with a 15-in. bit to 548 ft bls. This allowed more room for

sloughing material to fall to the bottom of the well bore.

Another problem resulted from sloughing interbed and basalt cuttings in the bottom of the well

bore while installing the 6.5-in. screen and well casing. This resulted in the filling of the bottom 27 ft

of the well screen (40-ft screen interval). An attempt to clean out the screen with a sand pump bailer was

unsuccessful, but using compressed air to clean out both the annulus and inside the screen worked well.

Water and fine interbed sediment with fine basalt cuttings were jetted out of the well for an estimated

15 hours, with approximately 18,000 gal of water being blown to the surface. This purging inside and

outside the screen interval allowed filter pack sand to be placed in the annulus adjacent to the screen.

4.1.2.4 Instruments Installed in the Borehole. Two vapor ports were installed in CFA-1931.

They are listed by well number, their type, and their installation depth. The vapor ports are as follows:

1931-VP-295-300—5-ft, stainless steel vapor port interval set at 295–300 ft bls

1931-VP-470-475—5-ft, stainless steel vapor port interval set at 470–475 ft bls.

4.1.3 Drawings

Location Maps:

See Figure 3.

As-Built Drawings:

See Appendix D.

4.2 CFA-1932 End of Well Report

4.2.1 General

Project Name:

Drilling and Installation of Two Aquifer Monitoring Wells for the Central Facilities Area Landfill.

Well Number:

CFA-1932.

Hole Location:

Approximately 150 ft south of Landfill I and about 31 ft south of West Portland Road

Northing: survey pending Easting: survey pending

Elevation: survey pending.

15

Implementation Plans:

“Drilling and Installation of Two Aquifer Monitoring Wells for the Central Facilities Area

Landfill” (SPC-604)

Health and Safety Plan for the Long-Term Stewardship Sitewide Monitoring (INEEL 2004).

Logbooks:

ER-216-2004, Environmental Restoration Department Record of Rotary Drillhole, pp. 14–64,

197–203, and 229–237

ER-214-2004, Environmental Restoration Department Field Team Leader’s Daily Logbook,

pp. 1–50.

4.2.2 Drilling and Completion Observations

Drilling Company:

Dynatec Drilling Incorporated; Salt Lake City, Utah.

Field Superintendent:

Frank Hight.

Drillers:

Luis Rosario and Gary Jensen (drillers), Hayes Jensen, Tony Andersen, Trevor Andersen, and

Chris Hight (drillers’ helpers).

Geologists:

Dave Bates and Gary Oberhansley (North Wind, Inc.).

Field Team Leader:

Lori Lopez (BBWI).

Drill Rig Type:

Foremost DR-24.

Drill Bit Type:

16-1/2-in. DR casing shoe from surface to 10 ft bls with a 15-in., tri-cone bit from surface to

10 ft bls, 15-in. carbide button bit with 10-in. hammer from 10 to 548.5 ft bls.

4.2.2.1 Drilling Activity. On December 18, 2004, two crews of one driller and two helpers (one day

crew and one night crew) began work on this well. Both crews worked 12-hour shifts, with shift changes

occurring at 0700 and 1900 hours. Two field geologists were assigned to provide drilling oversight,

logging, and well completion (one for the day crew and one for the night crew). A field team leader

16

oversaw and coordinated all aspects of this project. A health and safety officer and industrial hygienist

also were assigned to oversee all health and safety aspects of the drilling program.

On December 18, 2004, the exclusion zone surrounding the drill rig was set up at the CFA-1932

well location. Drilling began at 1410 hours that day. The initial drilling utilized a 15-in., tri-cone bit with

associated drilling rod while driving 16-in. (OD) DR casing, which had a 16.5-in. button cutting shoe.

Initially, cuttings were pulled through the drill string with a Hurricane 755 vacuum with a hopper

positioned over a frac tank. Surface soils, consisting primarily of silty sands and gravels, were drilled

through to 10 ft bls where basalt was encountered. The 16-in. DR casing was then set at 10 ft bls, and

drilling with only a 15-in. button bit air hammer continued to total depth. The use of the vacuum system

was discontinued on December 19, 2004, after drilling reached about 128 ft bls. Drilling resumed using

air and water as additives to force cuttings to the surface (one auxiliary air compressor [Sullair 900XH]

initially was used). A second auxiliary air compressor was connected and used after reaching 230 ft bls.

The 15-in. borehole was drilled from 10 to 548.5 ft bls through basalt and interbeds. Interbeds were

encountered at the following intervals: 54 to 70 ft bls (silty sand [SM]), 133 to 135 ft bls (silty-clayey

sand [SC-SM]), 194 to 203 bls (silty-clayey sand [SC-SM]), and 334 to 336 ft bls (silty sand [SM]).

The basalt drilled in this interval was vesicular to massive, fractured in part, and dry. Total depth of

548.5 ft bls was reached at CFA-1932 in the early morning of December 21, 2004. The USGS

video-logged the well bore to 491 ft bls, followed by natural gamma and caliper logs.

4.2.2.2 Summary of Well Construction Procedures. Well construction began at CFA-1932 in

the early evening of December 21, 2004. The well was set by the late evening of December 21, 2004.

The well consists of 6.5-in. OD, stainless steel casing (Schedule 10) from 2.5 ft above land surface to

485 ft bls. The 6.5-in. wire-wrapped, stainless steel well screen (0.05-in. slot) was set at 485 to 525 ft bls

with a 6-in. end cap. Both casing and well screen sections have threaded connections. Two vapor ports

were installed in the well bore at 255 to 260 ft bls and 465 to 470 ft bls. The vapor ports were attached to

the stainless steel casing with stainless steel clamps and connected to 3/8-in. stainless steel tubing, which

was run from the vapor ports to 4 ft above land surface and attached to the stainless steel casing with 2-in.

pump tape at 10-ft intervals.

In the late evening of December 21, 2004, the drill rig was moved offsite and a boom truck was set

up on CFA-1932 to finish building the well. Well construction on CFA-1932 continued through

December 23, 2004. Filter pack (6 9 and 8 12 Colorado silica sand) was placed to 455 ft bls followed

by granular bentonite to 267 ft bls. Additional filter pack (6 9 and 8 12 Colorado silica sand) was

placed from 267 to 243 ft bls followed by granular bentonite to 119.5 ft bls. Additional bentonite seal

(granular) was then placed to 15 ft bls on January 4, 2005.

On January 10, 2005, the USGS logged the well inside of the 6.5-in. well casing and screen. The

video camera was run first to inspect the casing and screen. The camera showed sediment in the bottom of

the screen at 523.1 ft bls. The camera’s depth was off approximately -1.3 ft, making the actual depth of

the bottom of the screen at 524.8 ft bls (0.2 ft of sediment and fine cuttings fill). Both casing and screen

appeared to be in good condition. The gamma-gamma and neutron logs were then ran, followed by the

gyro-deviation log. Well bore deviation is 12.4 ft southwest at 510.34 ft bls.

On January 13, 2005, the drill rig was moved back on location and the driller tagged the annulus at

15.5 ft bls. The drillers removed the 16-in. DR casing and replaced it with 12.5-in. carbon steel surface

casing. The 12.5-in. surface casing was set at 15.7 ft bls with 3 ft of stickup on the surface for a protective

well monument. Additional bentonite seal (granular) was added to the annulus from 15.7 ft bls to ground

surface between both the well casing and surface casing and surface casing and annulus.

17

The following Tuesday (January 18, 2005), the drillers used the boom truck to install a

five-horsepower, three-phase submersible pump and motor down the well connected to 1.23-in.,

stainless-steel riser pipe. The top of the motor/pump was measured at 506.9 ft bls, which places the intake

at 508.8-509.1 ft bls and the bottom of the pump at 512 ft bls. A weep hole was drilled in the riser pipe at

18.5 ft bls. A 1-in., stainless steel pipe was installed in the well at 495.5 ft bls for a water access line. The

pump was then tested at 18 gpm for approximately 250 gal of water to the surface. The water level was

measured to be at 490.9 ft bls. A locking 12.5-in. well cap was placed on the surface casing.

The surface completion for CFA-1932, including installation of a concrete pad, brass monument,

and three impingement posts, was installed on March 17, 2005

4.2.2.3 Problems Encountered and Lessons Learned. A few problems were encountered

with this well. The decision to drill the well bore with a 15-in. bit to total depth was made based on the

problems incurred in CFA-1931.

4.2.2.4 Instruments Installed in the Borehole. The instruments installed in CFA-1932 were

two vapor ports. They are listed by well number, their type, and their installation depth. The vapor ports

are as follows:

1932-VP-255-260—5-ft, stainless steel vapor port interval set at 255–260 ft bls

1932-VP-465-470—5-ft, stainless steel vapor port interval set at 465–470 ft bls.

4.2.3 Drawings

Locations Maps:

See Figure 4.

As-Built Drawings:

See Appendix B.

5. REFERENCES

29 CFR 1910, 2005, “Occupational Safety and Health Standards,” Code of Federal Regulations, Office of

the Federal Register, March 2005.

29 CFR 1926.65, 2005, “Hazardous Waste Operations and Emergency Response,” Code of Federal Regulations, Office of the Federal Register, March 2005.

42 USC § 9601 et seq., 1980, “Comprehensive Environmental Response, Compensation and Liability Act

of 1980 (CERCLA/Superfund),” United States Code, December 11, 1980.

ER-214-2004, Drilling and Installation of Two Aquifer Monitoring Wells for the CFA Landfill, Environmental Restoration Operations Field Team Leader's Daily Logbook,

December 6, 2004–January 18, 2005, pp. 1–33.

ER-215-2004, Drilling and Installation of Two Aquifer Monitoring Wells for the CFA Landfill (CFA-1931), Environmental Restoration Department Record of Rotary Drillhole,

December 6, 2004–January 18, 2005, pp. 12–94, 205–211, and 229–237.

18

ER-216-2004, Drilling and Installation of Two Aquifer Monitoring Wells for the CFA Landfill (CFA-1932), Environmental Restoration Department Record of Rotary Drillhole,

December 6, 2004–January 18, 2005, pp. 14–64, 197–203, and 229–237.

ICP, 2004, Central Facilities Area Landfill I, II, and III Annual Monitoring Report (2003),

ICP/EXT-04-00149, Rev. 0, Idaho Completion Project, October 2004.

INEEL, 2004, Health and Safety Plan for the Long-Term Stewardship Sitewide Groundwater Monitoring,

INEEL/EXT-01-01644, Rev. 4, Idaho National Engineering and Environmental Laboratory,

October 2004.

Irving, J. S., 1993, Environmental Resource Document for the Idaho National Engineering Laboratory,

EGG-WMO-10279, Idaho National Engineering and Environmental Laboratory.

SPC-604, 2004, “Drilling and Installation of Two Aquifer Monitoring Wells for the Central Facilities

Area Landfill,” Rev. 0, Idaho Completion Project, November 2004.

19

Appendix A

CFA-1931 and CFA-1932 Lithology

21

Appendix A

CFA-1931 and CFA-1932 Lithology

CFA-1931

(Surface to 23 ft bls, 16.5-in. DR casing shoe; 23 to 548 ft bls, 15-in. button bit with air hammer;

548 to 566 ft bls, 10-in. button bit with air hammer.)

Depth

(ft) Description

0–3 Surface soil (loess), silty-clayey sand (SM), light yellowish brown (10YR 6/4), slightly

moist, loose grain

3–20 Silty-sandy gravel (GM), grayish brown (10YR 5/2), small pebble, rounded, loose grain,

slightly moist

20–23 Silty sand (SM), fine–coarse grain, sub-angular to sub-rounded, loose grain, grayish brown

(10YR 5-2), slightly moist

23–25 Silty-clayey sand (SM-SC), very fine to fine-grained, olive brown (2.5Y 4/3), loose grain,

slightly moist

25–40 Basalt, vesicular, aphanitic, very fine crystalline, dark reddish gray (10R 3/1), dry

40–50 Basalt, vesicular, aphanitic, very fine crystalline, gray–dark gray (GLEY1 5/N-4/N),

fractured 48-50 ft bls, dry

50–58 Interbed, silty-sand (SW), reddish brown (5YR 4/4), very fine to medium grain, loose

grain, sub-angular to sub-rounded, slightly moist

58–61 Silty sand (SW), with small pebble gravel (GM), very fine to coarse sand, yellowish red

(5YR 5/6), sub-angular to sub-rounded, loose grain, slightly moist

61–75 Basalt, vesicular, aphanitic, very fine crystalline, gray (GLEY1 5/N), slightly moist,

fractured from 64 to 68 ft bls with clay infillings, yellowish brown (10YR 5/8) to yellow

(10YR 8/6), clay (CL), medium to low plasticity, slightly moist

75–90 Basalt, slightly vesicular, very fine crystalline, gray (GLEY1 5/N), slightly moist

90–120 Basalt, massive, very fine crystalline, gray (GLEY1 6/N), dense, fractured from 112 to

115 ft bls, dry

120–131 Basalt, massive, slightly vesicular, very fine crystalline, gray (GLEY1 5/N-6/N), dense, dry

131–138 Interbed, silty-clayey sand (SM-SC), brown (7.5YR 5/2), soft loose grain, very fine grain,

sub-rounded, slightly moist

138–140 Basalt, vesicular, aphanitic, very fine crystalline, gray (GLEY1 5/N), fractured, slightly

moist

140–142 Interbed, silty-clayey sand (SM-SC), strong brown (7.5YR 4/6), soft loose grain, very

fine-grained sand, sub-rounded, slightly moist

142–150 Basalt, vesicular, aphanitic, gray (GLEY1 5/N), fractured, slightly moist

CFA-1931 (continued).

22

Depth

(ft) Description

150–160 Basalt, (very fine cuttings), aphanitic, very fine crystalline, black (GLEY1 3/N), slightly

moist

160–170 Basalt, vesicular, aphanitic, black (GLEY1 3/N), slightly moist, fractured from 160 to

163 ft bls, slightly moist

170–190 Basalt, (very fine cuttings), aphanitic, black-gray, slightly moist

190–205 Basalt, vesicular, black, cuttings becoming larger, dry

205–230 Basalt, massive, light gray, very fine cuttings, dry

230–250 Basalt, massive, light gray, very fine cuttings, slightly moist

250–255 Basalt, aphanitic, black, slightly moist

255–259 Interbed/cinder zone, brownish red silty sand mixed with basalt cinder

259–275 Basalt, vesicular/rubble/fractured, brownish gray to dark gray, dry

275–300 Basalt, vesicular/rubble/fractured, brownish gray to dark gray, slightly moist, very soft

from 298 to 300 ft bls

300–310 Basalt, vesicular/fractured, brownish gray to dark gray, aphanitic

310–326 Basalt, slightly vesicular, dark gray, very fine crystalline, aphanitic, fractured, dry

326–335 Basalt, slightly vesicular, dark gray (GLEY 4/N), very fine crystalline, dry

335–338 Basalt, vesicular, very fine crystalline, dark gray (GLEY 4/N), some sloughing sediment in

returns, driller notes fractured/rubble zone

338–346 Basalt, slightly vesicular, very fine crystalline, dark gray (GLEY 4/N), dry

346–350 Basalt, massive/dense, fine crystalline, 5% subhedral olivine < 1mm, dry

350–364 Basalt, dense, diktytaxitic, fine crystalline, 5% subhedral olivine < 1mm, dark gray

(GLEY 4/N), dry

364–376 Basalt, as above, <5% anhedral to subhedral olivine, begin drilling with water at 366 bls

376–386 Interbed, clayey silt (ML), firm, low to medium plasticity, reddish yellow (7.5YR 6/6) to

brown (7.5YR 4/3), very poor returns

386–390 Interbed, clayey silt/silty clay (SM-SC), firm, low to medium plasticity, brown

(7.5 YR 4/3), poor returns, some interbed intermixed with basalt fragments

390–396 Basalt, vesicular, very fine crystalline, dark gray (GLEY1 4/N), some sloughing sediment

in returns

396–400 Basalt, dense, fine crystalline, dark gray (GLEY1 4/N)

400–410 Basalt, as above, returns are fine powder with basalt fragments, fractures noted at 404 ft bls

410–415 Basalt, slightly vesicular (10%), fractured, fine crystalline, dark gray (GLEY1 4/N)

415–424 Basalt, vesicular/fractured, fine crystalline, dark gray (GLEY1 4/N) to dusky red

(10R 2.5/2), slightly weathered, minor amounts clay in returns, brown (7.5YR 4/4)

424–433 Basalt, vesicular, fine crystalline, dark gray (GLEY1 4/N)


23

Depth

(ft) Description

433–440 Basalt, dense, dark gray (GLEY1 4/N)

440–443 Basalt, vesicular, fractured, aphanitic, dark gray (GLEY1 4/N), fresh, minor clay infillings,

brown (7.5YR 4/4)

443–445 Basalt, vesicular, rubbly, aphanitic, slightly weathered, dark gray to dark red (10R 2.5/2)

445–446 Interbed, silty sand (SM), fine-grained, dark grayish brown (10YR 3/2)

446–453 Basalt, vesicular, rubbly, fractured, aphanitic, dark gray (GLEY1 4/N), minor clay

infillings, brown (2.5YR 4/4)

453–460 Basalt, dense, fresh, aphanitic, dark gray (GLEY1 4/N)

460–463 Basalt, dense, fresh, fine crystalline, minor subhedral olivine <1 mm

463–470 Basalt, vesicular, aphanitic, dark gray (GLEY1 4/N)

470–478 Basalt, vesicular, aphanitic, slightly weathered, reddish black (10R 5/1)

478–485 Basalt, vesicular, fractured, aphanitic, minor clay infillings, yellow-brown (2.5YR 4/4)

485–525 No returns, rubbly/fractured basalt is inferred

525–540 Basalt, vesicular, fractured/rubbly, dark gray (GLEY1 4/N), clay infillings, light brown

(2.5YR 4/4), coarse cuttings

540–545 Basalt, as above, less amounts of clay infillings

545–550 Basalt, massive/diktytaxitic, no fractures or clay infillings

550–566 Basalt, vesicular, fractured, red-brown, minor clay infillings, yellow-brown (2.5YR 4/4)

566 Total depth drilled.

24

CFA-1932

(Surface to 10 ft bls, 16.5-in. DR casing shoe with 15-in. milltooth bit; 10 ft to 548.5 ft bls, 15-in.

button bit air hammer.)

Depth

(ft) Description

0–3 Surface soil, silty-clayey sand (SC-SM), light yellowish brown (10YR 6/4), loose grain, dry

to slightly moist

3–10 Silty-sandy gravel (GM), grayish brown (10YR 5/2), small pebble, rounded, loose grain,

slightly moist to dry

10–15 Basalt, vesicular, aphanitic, dark reddish gray (10R 3/1), dry

15–25 Basalt, very fine cuttings (powder), light gray, slightly moist

25–36 Basalt, powdered cuttings, light gray, with few dark gray vesicular chips, dry

36–54 Basalt, vesicular, fractured, aphanitic, dark gray, dry

54–70 Interbed, silty sand with minor gravel (SM), red-brown, slightly moist

70–95 Basalt, vesicular, fractured, aphanitic, very fine crystalline, very dark gray (7.5YR 3/1),

slightly moist

95–100 Basalt, slightly vesicular, fractured, very fine crystalline, very dark gray (GLEY1 3/N),

slightly moist

100–110 Basalt, massive, very fine crystalline, few olivine crystals, dry

110–133 Basalt, massive, dense, very fine crystalline, gray (GLEY1 5/N), dry, begin drilling with

water at 128 ft bls

133–135 Interbed, silty-clayey sand (SC-SM), reddish brown, loose grains

135–149 Basalt, vesicular, fractured, aphanitic, dark gray

149–153 Basalt, highly-vesicular scoria/rubble, oxidized, dark gray/reddish brown (2.5YR 2.5/1)

153–162 Basalt, vesicular, fractured, aphanitic, dark gray/reddish black (5YR 3/1 to 2.5YR 2.5/1)

162–175 Basalt, as above, with calcite infillings

175–190 Basalt, vesicular, very fine crystalline, aphanitic, very dark gray (10YR 3/1)

190–194 Basalt, vesicular, aphanitic, very dark gray (10YR 3/1) to reddish black (5YR 3/1)

194–203 Interbed, silty-clayey sand (SC-SM), reddish brown to orange, soft, loose grain


216–234 Basalt, massive/diktytaxitic, aphanitic, light gray


251–253 Basalt, slightly vesicular, few fractures, dark gray




25

Depth

(ft) Description








334–336 Interbed, silty sand (SM), red-brown, with minor gravel less than 1/4 in. across

336–343 Basalt, vesicular, moderately fractured, aphanitic, dark gray


360–365 No returns, basalt, as above, inferred


383–386 Basalt, vesicular, fractured, aphanitic, dark gray, minor pale yellow clay infillings


400–425 Basalt, slightly vesicular/massive, dark gray (GLEY1 4/N), very fine crystalline, dense

425–440 Basalt, slightly vesicular, dark reddish gray (10R 3/1), very fine crystalline, oxidized

fracture surface

440–460 Basalt, massive, dark gray (GLEY1 3/1), very fine crystalline

460–490 Basalt, vesicular, fractured, dark gray, aphanitic, minor pale yellow clay infillings

490–495 No returns, basalt, as above, inferred

495–500 Basalt, vesicular, fractured, aphanitic, minor pale yellow clay infillings



543–548 Basalt, massive/diktytaxitic, aphanitic, dark gray

548 Total depth drilled.

27

Appendix B

General Well Information for CFA-1931 and CFA-1932

432.A23

Rev. 01 GENERAL WELL INFORMATION

Page 1 of 1

All measurements of depth must be in relation to the land surface (bls).

REQUIRED INFORMATION

Well Name: CFA-1931 Point of Contact/Well Owner: Mike Hodel

Facility: CFA Landfills Field Team Leader: Lori Lopez

Project:

Drilling and Installation of Two Aquifer

Monitoring Wells for the CFA Landfills Geologist:

Gary Oberhansley, David Bates, Erik

Whitmore

Well Type: Aquifer Monitoring/Vapor Extraction Drilling Company/Driller: Dynatec, Inc./Luis Rosario, Gary Jensen

Well Status: Active Drilling Method: Air Rotary

Drilling Start Date: 12/8/04 End Date: 12/15/04 Drill Rig: Foremost DR-24

Completion Start Date: 12/15/04 End Date: 1/18/05 Drilling Fluid(s): Air and Water

Total Depth: 566 ft bls Water Level / Date: 1/18/05

Completion Depth*: 520 ft bls Water Level Access: 1-inch SS pipe +2.7 ft to 494.2 ft bls

* Completion Depth is the lowest accessible depth in the well. Survey Date: Surveyor:

Logbook Number and pages where referenced:

ER-215-2004, pp. 12-94, 205-211, 229-237.

ER-214-2004, pp. 1-50.

General Location Description:

South (~100 ft) of the southeast corner of CFA Landfill 2.

WELL COMPLETION

Borehole Segments

Borehole

Diameter Drill Bit Type

Top

(From)

Bottom

(To)

Borehole


Top

(From)

Bottom

(To)

16.5 inch DR Casing Shoe Surface 23 ft

15 inch

Button Air

Hammer 23 ft 548 ft

10 inch

Button Air

Hammer 548 ft 566 ft

Casing Segments (include stick up) Note – This does not include Screen – place this info in “Screen” segment.

Top Depth Bottom Depth Diameter Hanger

(From) (To) OD ID Type Material Thickness Depth Type Joint Type

+2.5 ft 480 ft

6.5

inch

6.25

inch Well Stainless Steel Schedule 10 Threaded

+3 ft 17 ft

12.5

inch

12

inch Surface Carbon Steel Schedule 40 NA

SCREENTop Depth Bottom Depth Diameter

(From) (To) OD ID Type Material Slot Size Joint Type

480 ft 520 ft

6.5

inch

6.25

inch Wire Stainless Steel 0.05 inch Threaded

Annular Seal / Filter Pack

Top Depth Bottom Depth Annular Filter Material Placement Mixture /

(From) (To) Seal Pack (Be specific as to the type of material) Method Volume

543.5 ft 566 ft Interbed soil/gravel/basalt cuttings slough 22.5 ft

450 ft 543.5 ft 6 9 Colorado Silica Sand Wet-Tremie 151.5, 50-lb bags

444 ft 450 ft 3/8-inch bentonite chips (hole plug) Dry-Tremie 50, 50-lb bags

303.5 ft 444 ft Granular bentonite (casing seal) Dry-Tremie 591, 50-lb bags

290 303.5 8 12 Colorado Silica Sand Dry-Tremie 45, 50-lb bags

432.A23


Page 2 of 2




179 ft 290 ft Granular bentonite (casing seal) Dry-Tremie 159, 50-lb bags

29 ft 179 ft 3/8-inch bentonite chips (hole plug) Dry-Tremie 192, 50-lb bags

23 ft 29 ft Fine basalt cuttings and sediment Well-screen cleaning 6 ft

Surface 23 ft 3/8-inch bentonite chips (hole plug) Dry-open hole 27, 50-lb bags

WELL DEVELOPMENT

Pump Specifications Well Development

Type: Submersible Date:

Manufacture: Grunfos

Model No.: 16S50-38

Top Depth of Pump: 505 ft bls

Bottom Depth of Pump: 510.1 ft bls

Intake/Inlet Depth: 506.9 - 507.0 ft bls

Comments:

Screen filled with 17 ft of fine

basalt cuttings and sediment

(40-ft section of screen).

Method:

Used sand pump for approximately 15 hr, for an

estimated 2,250 gallons of water bailed, and used

compressed air through tremie pipe inside 6.5-inch

casing and screen and along the annulus. Flowed

an average of 20 gallons per minute (estimated

18,000 gallons) using compressed air. Pumped 252

gallons of water for 14 minutes using auxiliary

generator.

Horse Power: 5 Pump Test

Flow Rate: 16 USGPM Date: 1/18/05

Head: 813

Volts, Amps, KW: 230, 15.9, 3.7

Phase: 3

Motor Leads

Submersible Cable:

Connections covered w/ plastic

heat-shrink seal

Comments:

Water was initially muddy with

fine sediment and basalt cuttings.

Water remained slightly muddy.

May need to be developed more.

Specific Capacity:

Water to the surface in 1.5 minutes at 18

gallons/minute.

Be Sure To Note Access Line Information: 1-inch stainless steel access pipe +2.7 ft to 494.2 ft bls (open end). 1.25-inch stainless steel riser pipe

+2.7 ft to 505 ft bls (1/8-inch weep hole at 18.5 ft bls).

Brass Cap Location (This can be separate but must be from Ken Beard / Bob Sutherland)

Northing Datum 27: Contact Hydrologic Data Repository Northing Datum 83: Contact Hydrologic Data Repository

Easting Datum 27: Easting Datum 83:

Latitude Datum 27: Latitude Datum 83:

Longitude Datum 27: Longitude Datum 83:

Elevation Datum 29: Elevation Datum 88:

Measuring Point Location




INSTRUMENTATION Instrument Type

Description Instrument Name

Instrument

Depth Carrier Pipe Description

Carrier Pipe

Top (From)

Carrier Pipe

Bottom (To)

Vapor Port 1931-VP-470-475 470-475 ft bls 6.5 inch (OD) Stainless Steel Casing +2.5 ft 480 ft


Comments: Vapor ports are made of 3/8-inch stainless steel tubing with 1/16-inch holes drilled every 1-inch apart, offset 90 degrees from each other,

for a length of 5 ft. The vapor ports are connected to 3/8-inch stainless steel tubing with Swedge locks. The tubing runs from ~3-ft above land surface

to the vapor ports. Vapor ports are connected to 6.5-inch (OD) stainless steel well casing with metal bands and the tubing is connected to the 6.5-inch

stainless steel casing every 10-ft with 2-inch pump tape.

432.A23


Page 3 of 3




Geophysical Logging Be sure to turn in Logs so they can be added to the diagrams. Make sure video logs are turned in to the Hydrologic Data Repository.

Tool Date Tool Date

Gamma Gamma 1/10/05 Natural Gamma 12/21/04

Neutron 1/10/05 Video 12/13/04, 12/21/04, 1/10/05

Caliper Deviation 12/21/04

Other Logs and Dates:

Comments: Well bore was in too bad of shape to run caliper log. Concrete pad, impingement posts and brass marker will be added to surface

completion when the weather changes (currently too cold with too much snow).

432.A23


Page 4 of 4


REQUIRED INFORMATION

Well Name: CFA-1932 Point of Contact/Well Owner: Mike Hodel

Facility: CFA Landfills Field Team Leader: Lori Lopez

Project:

Drilling and Installation of Two Aquifer

Monitoring Wells for the CFA Landfills Geologist: Gary Oberhansley, David Bates

Well Type: Aquifer Monitoring/Vapor Extraction Drilling Company/Driller: Dynatec, Inc./Luis Rosario, Gary Jensen

Well Status: Active Drilling Method: Air Rotary

Drilling Start Date: 12/18/04 End Date: 12/21/04 Drill Rig: Foremost DR-24

Completion Start Date: 12/21/04 End Date: 1/18/05 Drilling Fluid(s): Air and Water

Total Depth: 548.5 ft bls Water Level / Date: 1/18/05 / 490.9 ft bls

Completion Depth*: 525 ft bls Water Level Access: 1-inch SS pipe +2.7 ft to 495.5 ft bls

* Completion Depth is the lowest accessible depth in the well. Survey Date: Surveyor:

Logbook Number and pages where referenced:

ER-216-2004. pp. 14-64, 197-203, 229-237.

ER-214-2004, pp. 1-50.

General Location Description:

South of Landfill 1 approximately 150 ft, and south of West Portland Road about 31 ft.

WELL COMPLETION

Borehole Segments

Borehole


Top

(From)

Bottom

(To)

Borehole


Top

(From)

Bottom

(To)

16.5 inch DR Casing Shoe Surface 10 ft

15 inch

Button Air

Hammer 10 ft 548.5 ft

Casing Segments (include stick up) Note – This does not include Screen – place this info in “Screen” segment.

Top Depth Bottom Depth Diameter Hanger

(From) (To) OD ID Type Material Thickness Depth Type Joint Type

+2.5 ft 485 ft

6.5

inch

6.25

inch Well Stainless Steel Schedule 10 Threaded

+3 ft 15.7 ft

12.5

inch

12

inch Surface Carbon Steel Schedule 40 NA

SCREENTop Depth Bottom Depth Diameter

(From) (To) OD ID Type Material Slot Size Joint Type

485 ft 525 ft

6.5

inch

6.25

inch Wire Stainless Steel 0.05 inch Threaded

Annular Seal / Filter Pack



~533 ft 548.5 ft 8 12 Colorado Silica Sand Wet-Tremie 30, 50-lb bags

455 ft ~533 ft 6 9 Colorado Silica Sand Wet-Tremie 165, 50-lb bags

267 ft 455 ft Granular bentonite (casing seal) Dry-Tremie 267, 50-lb bags

243 ft ? 8 12 Colorado Silica Sand Dry-Tremie 26, 50-lb bags

? 267 ft 6 9 Colorado Silica Sand Dry-Tremie 28, 50-lb bags



432.A23


Page 5 of 5


15 243 Granular bentonite (casing seal) Dry-Tremie 360, 50-lb bags

Surface 15 Granular bentonite (casing seal) Dry- Open Hole 24, 50-lb bags

WELL DEVELOPMENT

Pump Specifications Well Development

Type: Submersible Date: 1/18/05

Manufacture: Grunfos

Model No.: 16S50-38

Top Depth of Pump: 506.9 ft bls

Bottom Depth of Pump: 512 ft bls

Intake/Inlet Depth: 508.8 ft - 509.1 ft

Comments:

Method:

Pumped approximately 250 gallons of water using

an auxiliary generator.

Horse Power: 5 Pump Test

Flow Rate: 16 USGPM Date: 1/18/05

Head: 813 ft

Volts, Amps, KW: 230, 15.9, 3.7

Phase: 3

Motor Leads

Submersible Cable:

Connections covered with

plastic heat-shrink seal

Comments:

Water was initially muddy with

fine sediment and basalt cuttings.

Water cleared quickly.

Specific Capacity:

Water to the surface in 1.5 minutes at 18 gallons

per minute.

Be Sure To Note Access Line Information: Note: 1-inch stainless steel access pipe +2.7 ft to 495.5 ft bls (open end). 1.25-inch stainless steel riser

pipe +2.7 ft to 506.9 ft bls (weep hole at 18.5 ft bls).

Brass Cap Location (This can be separate but must be from Ken Beard / Bob Sutherland)






Measuring Point Location






Geophysical Logging Be sure to turn in Logs so they can be added to the diagrams. Make sure video logs are turned in to the Hydrologic Data Repository.

INSTRUMENTATION Instrument Type

Description Instrument Name

Instrument

Depth Carrier Pipe Description

Carrier Pipe

Top (From)

Carrier Pipe

Bottom (To)



Comments: Vapor ports are made of 3/8-inch stainless steel tubing with 1/16-inch holes drilled every 1-inch apart, offset 90 degrees from each other,

for a length of 5 ft. The vapor ports are connected to 3/8-inch stainless steel tubing with Swedge locks. The tubing runs from ~3 ft above land surface to

the vapor ports. Vapor ports are connected to 6.5-inch (OD) stainless steel well casing with metal bands, and the tubing is connected to the 6.5-inch

stainless steel casing every 10-ft with 2-inch pump tape.

432.A23

DRAFT 03

Rev. 01

GENERAL WELL INFORMATION

Page 6 of 6


Tool Date Tool Date

Gamma Gamma 1/11/05 Natural Gamma 12/21/04

Neutron 1/11/05 Video 12/21/04, 1/10/05

Caliper 12/21/04 Deviation 1/11/05

Other Logs and Dates:

Comments: Concrete pad, impingement posts and brass marker will be added to surface completion when the weather changes (currently too cold with

too much snow).

Well Completion Report for Aquifer-Monitoring Wells CFA ... · Well Completion Report for...

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