Data Report Project Shoal Area Churchill County, … REPORT PROJECT SHOAL AREA CHURCHILL COUNTY,...

DOE/NV--505UCC-700

DATA REPORTPROJECT SHOAL AREA

CHURCHILL COUNTY, NEVADA

DOE Nevada Operations OfficeLas Vegas, Nevada

July 1998

DATA REPORTPROJECT SHOAL AREA

CHURCHILL COUNTY, NEVADA

Approved by: Date: Monica Sanchez, Project ManagerOff-Sites Subproject

Approved by: Date: Runore C. Wycoff, Project ManagerNevada Environmental Restoration Project

i

Table of Contents

List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

List of Acronyms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

2.0 Surface Investigation CAU No. 416 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 Summary of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.4 Estimated Volume of Pit Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

3.0 Subsurface Investigations CAU No. 447 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Drill Site and Sump Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3 Summary of Monitoring Well Drilling and Completion Operations . . . . . . . . . . . . . 3-2

4.0 Well HC-1 Summary of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Well HC-1 Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.2 Well HC-1 Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.3 Well HC-1 Geophysical Surveys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.4 Well HC-1 Radiologic Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.5 Well HC-1 Well Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.6 Well HC-1 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4


5.1 Well HC-2 Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2




Table of Contents (Continued)

ii


5.6 Well HC-2 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5


6.1 Well HC-3 Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3





6.6 Well HC-3 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6


7.1 Well HC-4 Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2 Well HC-4 Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2



7.5 Well HC-4 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

7.6 Well HC-4 Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

8.0 Fluid Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 Summary of Fluid Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 Source Water for Drilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.3 Sump Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.4 Disposition of Fluids and Current Status of Sumps . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

9.0 Waste Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 NVO-325 Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 Results of Waste Management Audit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.3 Disposition of Waste . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

10.0 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

iii

List of Figures

Number Title Page

1-1 Project Shoal Area Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2-1 Shoal Mud Pit Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-2 Shoal Mud Pit Sample Location Map with Upgradient Locations . . . . . . . . . . . . . 2-6

2-3 Shoal Mud Pit Sample Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-4 Cross Section Mud 1 - Borings DP-6, DP-5, DP-4 . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2-5 Cross Section Mud 3 - Borings DP-18, DP-6, DP-3 . . . . . . . . . . . . . . . . . . . . . . . 2-9

2-6 Cross Section Mud 4 - Borings DP-8, DP-5, DP-2 . . . . . . . . . . . . . . . . . . . . . . . 2-10

2-7 Cross Section Mud 2 - Borings DP-10, DP-9, DP-7, DP-4, DP-1, DP-11 . . . . . . 2-11

2-8 Shoal Mud Pit Analytical Concentration Map of Barium . . . . . . . . . . . . . . . . . . . 2-13

2-9 Upgradient Analytical Concentration Map of Barium . . . . . . . . . . . . . . . . . . . . . 2-14

2-10 Shoal Mud Pit Analytical Concentration Map of Chromium . . . . . . . . . . . . . . . . 2-15

2-11 Upgradient Analytical Concentration Map of Chromium . . . . . . . . . . . . . . . . . . . 2-16

2-12 Shoal Mud Pit Analytical Concentration Map of Gross Alpha . . . . . . . . . . . . . . . 2-17

2-13 Upgradient Analytical Concentration Map of Gross Alpha . . . . . . . . . . . . . . . . . 2-18

2-14 Shoal Mud Pit Analytical Concentration Map of Gross Beta . . . . . . . . . . . . . . . . 2-19

2-15 Upgradient Analytical Concentration Map of Gross Beta . . . . . . . . . . . . . . . . . . 2-20

List of Figures (Continued)

Number Title Page

iv

2-16 Shoal Mud Pit Analytical Concentration Map of Cesium-137 . . . . . . . . . . . . . . . 2-21

2-17 Upgradient Analytical Concentration Map of Cesium-137 . . . . . . . . . . . . . . . . . 2-22

2-18 Shoal Mud Pit Analytical Concentration Map of TPH Diesel . . . . . . . . . . . . . . . 2-23

2-19 Shoal Mud Pit Analytical Concentration Map of Waste Oil . . . . . . . . . . . . . . . . . 2-24

2-20 Soil Boring Log for DP-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25









2-29 Soil Boring Log for DP-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34




Number Title Page

v







3-1 Shoal Well Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-2 Shoal Project Well Cross Section Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-3 Shoal Flow Gradient Cross Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4-1 Summary of Well HC-1 Drilling Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4-2 Well HC-1 Lithologic Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4-3 HC-1 Fluid Injection versus Production Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4-4 HC-1 Geophysical Log Traces of Spectra Gamma Ray . . . . . . . . . . . . . . . . . . . . . 4-9

4-5 HC-1 Geophysical Log Traces of Caliper, Resistivity, Neutron . . . . . . . . . . . . . . 4-10

4-6 HC-1 Geophysical Log Traces of Caliper, Gamma Ray, Density . . . . . . . . . . . . . 4-11

4-7 HC-1 Geophysical Log Traces of Chemtool . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12


Number Title Page

vi

4-8 HC-1 Tritium Concentrations During Drilling . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4-9 HC-1 Subsurface Well Completion Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4-10 HC-1 Well Head Completion Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15




5-4 HC-2 Geophysical Log Traces of Spectra Gamma Ray . . . . . . . . . . . . . . . . . . . . 5-10









6-3 HC-3 Fluid Injection versus Production Diagram . . . . . . . . . . . . . . . . . . . . . . . . 6-10


Number Title Page

vii

6-4 HC-3 Geophysical Log Traces of Spectra Gamma Ray . . . . . . . . . . . . . . . . . . . . 6-11









7-4 HC-4 Geophysical Log Traces of Spectra Gamma Ray . . . . . . . . . . . . . . . . . . . . . 7-9








Number Title Page

viii

8-1 Diagram of Single-Lined Sump Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

8-2 Diagram of Double-Lined Sump Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

ix

List of Tables

Number Title Page

2-1 Summary of Shoal Direct Push Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

2-2 Shoal Mud Pit Analytical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44

2-3a and 2-3b Shoal Mud Pit Quality Control Sample Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47

4-1 Well HC-1 Lithium Bromide Concentrations . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

4-2 Well HC-1 Water Level Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4-3 Well HC-1 List of Geophysical Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

4-4 HC-1 Summary of Subsurface Investigation Samples . . . . . . . . . . . . . . . . . . . . . 4-21

4-5a to 4-5e HC-1 Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

5-1 HC-2 Lithium Bromide Concentrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5-2 HC-2 Water Level Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

5-3 HC-2 List of Geophysical Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19


5-5a to 5-5f HC-2 Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21


6-2 Well HC-3 Water Level Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

6-3 Well HC-3 List of Geophysical Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

List of Tables (Continued)

Number Title Page

x


6-5a to 6-5e HC-3 Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21


7-2 HC-4 Water Level Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

7-3 HC-4 List of Geophysical Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18


7-5a to 7-5f HC-4 Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20

8-1 Well HC-1 ER Fluid Disposition Status Reporting Form . . . . . . . . . . . . . . . . . . . 8-5




xi

List of Acronyms and Abbreviations

AIP Analysis in process

bgs Below ground surface

CAIP Corrective Action Investigation Plan(s)

CAS Corrective Action Site(s)

CAU Corrective Action Unit(s)

CFR Code of Federal Regulations

cm Centimeter(s)

COC Chain of Custody

DOE U.S. Department of Energy

DOE/NV U.S. Department of Energy, Nevada Operations Office

DRI Desert Research Institute

FFACO Federal Facility Agreement And Consent Order

FMP Fluid Management Plan

ft Foot (feet)

ft Cubic foot (feet)3

gpm Gallon(s) per minute

id Inside diameter

in. Inch(es)

IT IT Corporation

L/min Liter(s) per minute

LiBr Lithium Bromide

m Meter(s)

m Cubic meter(s)3

MCL Maximum Contaminate Level(s)

min/ft Minutes per foot (feet)

mg/kg Milligram(s) per kilogram

mg/L Milligram(s) per liter

MSDS Material Safety Data Sheet(s)

NA Not Analyzed

ND Not detected

NDEP Nevada Division of Environmental Protection

NDWS Nevada Drinking Water Standards

NTS Nevada Test Site

od Outside diameter

List of Acronyms and Abbreviations (Continued)

xii

pCi/L PicoCurie(s) per Liter

PS Post Shot

PSA Project Shoal Area

psi Pound(s) per square inch

QC Quality control

SGZ Surface Ground Zero

SSHASP Site-Specific Health and Safety Plan

SVOC Semivolatile organic compound(s)

TCLP Toxicity Characteristic Leaching Procedure

TD Total depth

TPH Total Petroleum Hydrocarbon(s)

VOC Volatile organic compound(s)

Xe Xenon

EC Degree(s) Celsius

1-1

1.0 Introduction

This preliminary data report presents the field data collected by IT Corporation (IT) between

September 4 and November 14, 1996, as part of the implementation of the Corrective Action

Investigation Plan (CAIP) for the Project Shoal Area, CAU No. 416 (PSA) (DOE/NV, 1996a).

The CAIP is part of an ongoing U.S. Department of Energy (DOE)-funded project for the

investigation of Corrective Action Units (CAU) No. 416 surface and No. 447 subsurface, PSA.

All work conducted on this project was conducted in accordance with the Federal Facility

Agreement and Consent Order (FFACO) of 1996, the Resource Conservation and Recovery Act

Industrial Sites Quality Assurance Plan (DOE, 1994) and all applicable Nevada Division of

Environmental Protection (NDEP) policies and regulations (NDEP, 1992).

The PSA covers 10.36 square kilometers (4.0 square miles) and is located in northwestern

Nevada approximately 48.28 kilometers (30.0 miles) southeast of the town of Fallon, in the

northern portion of the Sand Springs Range in Churchill County, Nevada (Figure 1-1). The PSA

was active during the early to mid-1960s as the site of a single underground nuclear test,

Project Shoal. The test was conducted to determine whether seismic waves produced from an

underground nuclear test could be differentiated from those resulting from earthquakes.

1.1 PurposeThe purpose of this field investigation was to investigate surface and subsurface areas possibly

contaminated by the Project Shoal Nuclear Test and associated activities. The purpose of the

surface investigation was to determine if drilling materials contained within the PSA mud pit were

contaminated and, if so, to determine the nature and extent of contamination. The results of this

surface investigation would be used to develop an appropriate corrective action for CAU

No. 416.

The purpose of the subsurface investigation was to collect aquifer and groundwater data to aid in

the modeling of groundwater flow and contaminant transport. The resulting model will be used to

establish the boundary for CAU No. 447.

1-2

1.2 Scope of WorkThe scope of the surface investigation included soil sampling from the mud pit and surrounding

area. Twelve soil borings were advanced within the mud pit; three soil borings were advanced

upgradient; and three were advanced downgradient of the mud pit. Discrete soil samples were

obtained from individual borings to characterize mud pit material, natural soils, and bedrock

below and proximal to the mud pit.

The scope of the subsurface investigation included constructing drill pads and lined fluid storage

sumps for drilling, drilling four groundwater monitoring wells to depths in excess of

396.24 meters (m) (1,300 feet [ft]) below ground surface (bgs), collecting hydrologic data during

drilling, regularly monitoring discharged drilling effluent for radionuculides, conducting downhole

geophysical logging of the open boreholes, casing the boreholes above the potentiometric surface,

developing the wells, and collecting groundwater samples from the developed wells. Upon

completing drilling and casing operations, water levels were monitored to determine recovery

rates and the static water level of each well.

I

T16N

T14N

::::::::::. T15N

\~~~......................................................................................

Area A

E 600,000

R33E

Frenchman

o Land withdrawal boundary

• Town

('::::.1 Mountain ranges

Improved roadway

Unimproved roadway

--- Township/range boundaryCounty line

Section line

E 580,000E 560,000

Area A: Right of entryArea B: Land withdrawn

T16N, R32E, Sections 33 and 34,T15N, R32E, Sections 3 and 4.

E 540,000

R31E R31~E

Churc_h~1 Cou'2.t~

Mineral County

)...JI~='=:l:;:--t- ProjectShoal Area

z

z

z

z

ooc:ooCD

z

oooc5'¢CD

ooo. -.r~~r------;r--....,.~~.............rrr'----""--"""TT".L..-_------""""....---,°CDCD

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Land Order #2834,N Source: DRI, 1988; Public December 19620

~

Figure 1-1Project Shoal Area Location Map

1-3

This page intentionally left blank

2-1

2.0 Surface Investigation CAU No. 416

The Shoal Mud Pit, Corrective Action Site (CAS) Number 57-09-01, is located due east of

surface ground zero in a shallow canyon with an earthen dam at the southern end (Figure 2-1).

The Shoal Mud Pit was constructed to hold fluids and cuttings from the Post Shot (PS)-1 vertical

borehole that was drilled into the Shoal test cavity in October 1963. Since PS-1 was drilled using

bentonite drilling mud, air, and air-mist, the primary constituents of concern in the mud pit are

possible radiological contaminants from the Shoal test cavity. Some details of the Shoal test are

still classified; however, the known nonclassified radiological contaminants of concern are tritium,

strontium , and cesium . Short-lived gaseous radioisotopes of iodine , xenon (Xe ), and90 137 131 133m 133m

Xe , encountered during the drilling of the post shot, have decayed to below detection limits. 133

These radioisotopes were not detected in the samples colleted during the September 1996

sampling event.

Please note that Figures 2-1 to 2-37 and Tables 2-1 to 2-3, cited in the following text, are located

at the end of this section.

2.1 PurposeThe purpose of sampling the Project Shoal Area mud pit was to evaluate potential contamination

and to determine the vertical and horizontal extent of the mud pit. Eighteen locations were

sampled in and around the mud pit by the direct-push method (Figure 2-2).

2.2 Scope of WorkThe mud pit characterization activity was conducted from September 5 through 8, 1996, and

September 15 and 16, 1996. Gregg Drilling Company of Signal Hill, California, was

subcontracted to do the direct-push borings, under the direction of IT.

Before sampling the mud pit, a control point was established at the approximate middle of the

earthen dam, and sample locations were measured out in a 6.10-m (20.0-ft) grid pattern within the

mud pit. A total of ten soil borings (DP-1 to DP-9, and DP-18) were taken to characterize the

mud pit. Three soil borings (DP-12, DP-13, and DP-14) were taken downgradient on the south

side of the earthen dam; three (DP-15, DP-16, and DP-17) were taken from approximately

152.40-m (500.0-ft) upgradient in the canyon; and one boring each was taken from outside the

east (DP-10) and west (DP-11) edges of the mud pit (Figure 2-2).

2-2

Soil borings were completed using direct-push techniques. This method incorporates a hydraulic

percussion hammer which drives a 0.61-m (2.0-ft) long sampling rod to the required depth. The

rod is hollow with four 15.24-centimeter (cm) (6.0-inch [in.]) long, 2.54-cm (1.0-in.) diameter,

stainless steel sampling sleeves. The soil is forced into the sleeves as the hammer drives the

sampler into the ground. When the sampling sleeves were removed from the drive rod, the ends

of each 15.24-cm (6.0-in.) long sleeve were inspected and logged by the IT site geologist. A cap

was placed on each end of the sampling sleeve until the boring was completed and the soil in the

sleeves could be composited for sampling. After the soil was composited, it was placed in the

sample jars, labeled, and placed on ice. Samples were handled according to ITLV Standard

Quality Practices (IT, 1996).

A composite sample was collected from all material recovered from each direct-push sampling

location. In order to obtain adequate sample volume, it was necessary to advance more than one

boring at a location; the additional borings were done within a 30.5-cm (1.0-ft) radius of the initial

boring. The sample sleeves were only 2.54 cm (1.0 in.) in diameter, and the maximum push depth

was less than 1.22 m (4.0-ft).

The soil borings revealed that the mud pit has a maximum thickness of 0.61 m (2.0 ft) in the

center and thins towards the edges. The direct-push sampling rod was usually refused when the

granite bedrock was encountered at a depth of generally less than 1.22-m (4.0-ft) below the mud

pit’s surface. There was no obvious contact between the mud pit floor and the native soil. Mud

pit material was distinguished from the background soil based on a change in grain size and

material color. Where samples were required to analyze the soil below the mud pit, a composite

sample was collected from the deepest sample sleeves that contained only native soil and no mud

pit material. Soil boring logs for direct-push borings DP-1 through DP-18 are illustrated in

Figures 2-20 through 2-37. Figure 2-3 is a plan view of the mud pit showing sampling locations,

and Figures 2-4 through 2-7 are cross sections of the mud pit.

Shallow mud pit samples DP-1, DP-3, DP-4, DP-6, DP-7, DP-9, and DP-18 were analyzed for

gross alpha, gross beta, total barium, total chromium, tritium, gamma spectroscopy, and Total

Petroleum Hydrocarbon (TPH) diesel. Deep mud pit samples (DP-1, DP-5, DP-7, DP-9, and

DP-18) were analyzed for gross alpha, gross beta, tritium, and gamma spectroscopy. Soil boring

locations DP-2, DP-5, and DP-8 were waste management samples and were analyzed for gross

alpha, gross beta, Toxicity Characteristic Leaching Procedure (TCLP) metals, tritium, gamma

spectroscopy, TPH diesel, TCLP semivolatile organic compounds (SVOCs), and TCLP volatile

organic compounds (VOCs). Direct-push borings (DP-10 and DP-11), which are adjacent to the

2-3

mud pit, and downgradient borings (DP-12 to DP-14) were analyzed for gross alpha, gross beta,

tritium, and gamma spectroscopy. Soil borings DP-15 to DP-17, upgradient, were analyzed for

gross alpha, gross beta, total barium, total chromium, and gamma spectroscopy. The following

quality control (QC) samples were collected: field duplicates, matrix spike/matrix spike

duplicates, field blanks, trip blanks, and equipment decontamination rinsate samples.

Upon completing sampling, Bell and Associates, Land Surveyors, of Fallon, Nevada, were

contacted to survey each direct-push boring location. These survey points were established in

Nevada State Plane, North American Datum 1927, coordinates.

2.3 Summary of ResultsA total of ten shallow soil samples were collected from within the PSA mud pit boundaries.

Seven of these samples were analyzed for TPH (diesel fraction and waste oil fraction), total

barium, and total chromium. The remaining three samples were analyzed for TPH (diesel fraction

and waste oil fraction), TCLP-extractable VOCs, TCLP-extractable SVOCs, and TCLP-

extractable metals. These latter three samples were collected for waste management purposes.

Table 2-1 summarizes the sample number, the direct-push boring number, and the depth.

Table 2-2 contains the sample results from the borings. Figures 2-8 to 2-19 are sample location

maps with the concentration of various analytical constituents displayed. Mud Pit QC Analytical

Data shows results of the quality control samples. Analytical results for volatile organic

compounds for the trip blank samples were all nondetects.

The preliminary action levels for TPH, total barium, and total chromium established in the CAIP

(Section 3.5.1) are as follows:

• TPH - 100 milligrams per kilogram (mg/kg), which is the NDEP regulatory action levelfor TPH.

• Total barium - 4,000 mg/kg, which is the draft 40 Code of Federal Regulations (CFR)264 Subpart S recommended action level for barium.

• Total chromium - 400 mg/kg, which is the draft 40 CFR 264 Subpart S recommendedaction level for hexavalent chromium. Although hexavalent chromium is not expected tobe present in the mud pit soils, there are no Subpart S recommended values for totalchromium or trivalent chromium when direct contact is the principal exposure pathway;therefore, the hexavalent chromium value is being used as a conservative action level.

• Waste Characterization Samples - The three (3) waste characterization samples werecompared to 40 CFR 261.26 toxicity characteristics for classifying hazardous wastes.

2-4

The analysis for TPH found waste oil in several samples above the State regulatory limit of

100 mg/kg, while TPH diesel was found above this limit in only two samples (see Table 2-2).

However, the total barium and total chromium levels are well below the proposed Subpart S

action levels. None of the analyses for the radiological parameters showed levels above expected

background. In addition, the waste characterization sample analyses show that the material is not

a hazardous waste.

2.4 Estimated Volume of Pit MaterialThe estimated volume of material in the mud pit is approximately 116.21 cubic meters

(4,104 cubic feet). The volume was estimated by averaging the depth of the mud pit, 1.52 ft

(as encountered in the borings), and multiplying by 2,700 square feet, the estimated surface area

of the mud pit. Refer to Figures 2-3 to 2-7 as they illustrate the approximate subsurface extent of

the impoundment and the irregular basal contour.

kE;GEND

I

Source: DOE, 1996

o

o

SCALE

0.6 1.2 Kilometers

i0.25 0.5 Miles

@ Abandoned well or boring

• Proposed well (approximate location)

* Shoal Mud Pit (approximate location)

- Withdrawn area boundary

--- Topographic contour (Interval =200 feet)

x5365 Point elevation

• - - Unpaved road

xSGZ Surface ground zero

- - - Approximate location of groundwater divide

Figure 2-1Shoal Mud Pit Location Map

2-5

....... L62040lSN

DAM CREST----------+--

.................................. r 16201.0,6N..

........................... ...L62020.6N.....

, ,, ,, ,, ,, ,, ,, ,, ,, ,

SHOAL MUDPIT

LJ LJ~ ~C1 DP-17. MM ~N DP-lIL NlSi .... lSilSi DP-15. lSi

----------------------------_.._-_._-------

RETENTION DAM....1.6.2.02Q.6.N " " _ .

16201.66N ....................1 .._ _................... , .

162.0.1lJl6N " .

Wrl

...1.6.2.0.aq.6.N -.-- 0'1 '"1 .(YJ '"1M ~ lSi ~ NN N N N NlSi lSi lSi lSi lSilSi lSi lSi lSi lSi

en::r0II)

3:cQ.

"'tI;:;:enII)

3"CCD..0oII) "T1- _.-'CCo C

N ~ ...I 3: CD0'1

II) N"C I

N:e;:;:::rC

"CccAlQ.C;'~-..0(')II)-c)"~(fJ

._.._.__._- ._========-Sc e Le = 100

I /\ PROJECT SHOAL AREA

L!='N=\=================.===S=AM=P=LE 1_ OeATI ON MAP

o 50 100

feet

200

SHOAL MUDPIT

DAM CREST

RETENTION DAM

.__._----------------------------"

•

D

•D

DP-11.

)--------------------------------------------------\

._----_._----------------

===============~---

Scale = 40 feet

804020o

MUDPI T

PROJECT SHOAL AREA

)__-,.c~.-=-------'---

............._~-------._~--~~~~~-~~~=---~~~~ -~~~~-~~~~._.-~~~---r~~-,

19 --===~)_~~-----=:......::2-,=O,---=-======z ~~~--,

5235.00·f-~~~~~~~~~~~~--~~~~~~~~~~~~--~~~~~~~~~~~~~~~~~~~~~~----- 5235.00

5234.00+-~~~~~~~~~~~~~~~~~~~~~~_·~~~~~~~--~~-~~~~~~~~~~~~~~~~-j·5234.00

5227.00+-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~---'2.<.J.l~,;,,;J:":"':'.b=~~~~~~-t5227.00

5233.00+--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--t5233.00

=-~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~~-1·5232.00

5226.00

~~~~~~~--t5230.00

~~~~~~~-+5229.00

~~~~~~~-+5228.00

------~- 5231.00

OP-6

5230.00+-~~~~~.<="-

5231.00+-~~~~~~-

5228.00+--~~~~~~~~~~~~~~~~~~~~~~...m;:.QB!~~~;;::'1

5226.00 --~~-~~~~--~~~_.~~~~~~~~~._-~--~---

5229.00+--~~~~~~~~~~~~~--==s:...:::;

5232. 00 1-~~~---.JL.L\.IJ.!.tll.·

o.,0VIVIen(I)(")~0:::s:s:c:Q.

-!!I CC

tvm~I

00 0 (I)

:::::!. I'.)

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C"'0I

0')

C"'0I(II

C"'0I

~

522500 ~~~--_._-~- '5225.00

===========-=======--=--=---=-==--=-====================:::::::::::;-1r·-------~------~

I 0.0

PROJECT SHOAL AREAor,

I.D

olJ

ruu

2.D,n

========....-'7-------.-.-_._._----_._------_.__._----------- ---_._._--_._======

_... -_.-_._----------~=.======

5236.00 -·-·------------"+5236.00

523500_________________________________________________~r_--.-------------.+5235.00

522900+---------------------------------------------------------------+5229.00

5228.00+---------------------------------------------------------------+5228.00

523400+----------------------------------------------------------------+5234.00

--------+5233.00

OP-3

------·-------t5227.00

::.=--------------+5232.00

-L---------------------+5231.00

""----------------------------+5230.00

5233.00+---------------------------------------------::

523200 ----------::-::c--:-=----------=

5230.00+-------=:;-;-

5227.00

5231.00+---------

o"'IoUIUIenCDo~o~

s::s:::Q.W"T1'CC

NttJs:::lOa10"'1_. N~ ICCcnUI

C"tJI~

(1)

C"tJIenC"tJI

W

._--------------

pr~OJE[T ~;HOAL

X·-S[c. ,IUD 3

2.0

'"'"II

U)

----~1 9 ;, ~------.----- ::'0-----=- ---------------~ -------------- --------------

523400 5234.00

5233.00 5233.00

o.,0til 5232.00 5232.00tilen(I)(')

5231.00I:!: 5231.00 MUDPIT0::::3

s::c: 5230.00 5230.00Q.~!!I ce

NaJ c: 5229.00 5229.00I .,,...0 (I)0:::!·N::::3 IceO)

5228.00 5228.00til

C-cI

CO 5227.00 5227.00

C-cIc.n

5226.00

__~52"OOC-cI

N

0.0

0

C<I . (I

'"';ijU

2.0 cO

PROJECT SHOAL AREA

>:--5EC. nun 4

---------_.-----------

------------------------------------------------------- --------------------,

5243_00

5242.00

5241 _00

5240_00

523900

5238.00

5237_00

5236.00

5235.00

5234.00

5233.00

5232.00

5231.00

5230.00

5229.00

5228.00

5227.00

--- 5226.00

5225.00

5224.00

-------+5223.00

---------------------

----------------------+5222.00

I:::JRC)j[[l

5241.00t---------------------------------------------------------------+

5234.00+--------

5238.00

5239.00 ---------------------------------------------------------------t

5240_00+---------------------------------------------------------------+

5233.00+--------

5232.00+--------

5228.00+-----------------'<"

5230.00+-------------=

5224.00+----------------------·---------------------------------

523500+---------'"'",..,-,.-,.,.----------------------------------------c

5236_00+-----------------------------------------------------

5237_00+--------------------------------------------------------LLt:::::'~-'--------_+

5229.00+--------------'

522500+--------------------------------

5223-00-1-----,------------------

5222.00

5226_00 ---------------------------------------------------------.

o..0tiltilenCD(")ct.0~

s:C0-N

OJ0::::!.~

COtil !!CCO

N "t'JCI ~Cil--!=,N

I

C ...."t'JI

U)

C"t'JI....C"t'JJ~

c"t'JI~

C"t'JI~

~

X--SEe., IIUD 2

-l • CJ

0;

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-----------------

Explanation for Figures 2-8 to 2-19----------- . --- -_.._-------- _ ..._--_.._.... -- --- -------_ .. _-_.._-------------------------------- --------

- - - J620..!93N Nevada State Planar Northing and Easting Grid

Outline showing extent of shoal mudpit

DP-1.

234.00

Boring number with direct push soil sampling location

Highest concentration of constituent detected in that boring

"'CCQ)Cl~

L...- ---J

2-12

5.00

w w~ ~N ~N ~~ N~ ~

I II II I

i D~1~ i____________________1 ~_1J5~[}l_:i~__

SHOAL MUDPIT

DP-S.

P-2e

N~,

II

24Q.00DP-6e :

--------------------1------ ----------[ip:s;-I

D

IIIIIIIIIIIIIIIIII

D~1~ iII

I I

_JL~~[ll_CL3jJ l----------------------------------------------1------------------------------- ~-1J5~[}l-[l~--I I II I II I II I /-,

: : Dr-14eI I II I II I II I II I I

! ! DP-1Je!I I II I II I II I II I I

~ ~ ~

~ ~ ~~i ~1~P-1 mN N ~m m mm m m

en':j'

0S»

3:cQ.

"tJ;:::;:»~S»

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N (")CI 0 .,......

CD\.;.l ~o NCD I

~ 00-.,S»c:t.0~

3:S»

"00....ttlS»::::!.C3

SHOAL PROJECT/MUOPIT

BARIUM> 1 MG/KG

o 10 20

Scale = 20 feet

40

103.00DP-17.

C"C(Q...D)c.(I):::::I-»:::::ID)

-<::::t(')D)

"T1o cQ'

tv o l:I :::::I ..........

+:0- o (I)(I) N:::::I I_CD...D)::::t0:::::I

s:D)"C0~

OJD)

:::!.l:3

~ /-------------td---------------------------------------------td---------------------------------------------td------------------------------------------

~ ~ ~~ N ~~ ~ ~N ~ ~

~ ~ ~I I

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

_JLf2~[l1_5~~ : ----~:f~-}-~-~~9-Q------------------------~----------- JLf2~[l~:i3lJ__I II II II IIIIIIIIII

1 b-r. 00DP-15e

~ ~ ~rl rl rl

_JLf2~[l1_0~--------------------------------------------~ ~-------- JLf2~[l~Cl3lJ__N N N~ ~ ~~ ~ ~

v

SHOAL PROJECT/MUDPIT

BARIUM > 1 MG/KG

o 10 20

Scale = 20 feet

40

I

i 7.90~P-9.

II

10.70DP-7.

w w~ ~N ~N ~~ ~

~ ~I II II II I

i D~1~ i____________________1 l_lJ5~[lJL:i~__DP-8e

SHOAL MUDPIT

P-2e

DP-11.

f"i~

III

9.7bDP-6. :

--------------------~------IIII

D IIII

i DP-S.IIIIIIIIIIIIII

i 7.70P-1.IIIIIIIIIII II I II I I

_-ltS~[l1_0~~ 1----------------------------------------------1------------------------------ l_lJ5~[lJL[l~__I I II I II I II I b: : Dr -14eI I II I II I II I II I I

i i DP-13e iI I II I II I II I I

~ ~ ~

~ ~ ~~i ~1~P-1 mN N Nm m mm m m

s::r:::::Q.

1J;::+»::JA)

-e!:!:oA) "(')cC'o r:::::::J .,o (I)(I) I\)

;a~

SiJ 0!:!:o::J

s::A)

"o....o::J'"

a3e3

NIVI


CHROMIUM > 1 MG/KG

o 10 20

Scale = 20 feet

40

~ ~ ~M M M

~-ltS~[l~~O~~~~~~~ ~ ~ ~ ~-----~-- -ltS~(l~CL3jj__

N N Nm m mm m m

'~ /~~~~~~~~~~~~~td~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~td~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~td~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~ ~ ~~ N ~~ ~ ~N N N~ ~ ~

I II II II II II II II II II II II II II I

: 10.20:i DP-17. iI II II II II II II II II II II II II I

~-ltS~[l~~5~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~t]p:f~~!~Q~~~9~~~~~~~~~~~~~~~~~~~~~~~~~~j~~~~~~~~~~~~~~~~~~~~~~~~~-ltS~[l~~3jj~~I II II II II II II II II II I

II

7[40DP-15e

C"CccD1CoCD"::s-»::sD)

-<-n"D)-o:!!occ

N ::s eI

~ CiJ-01 ::s N-I.., ..a.D) ..a.d:0::s3:D)

"C0....0::r..,03c:

1/3


CHROMIUM > 1 MG/KG

o 10 20

Scale = 20 feet

40

.10II

: 2OP-9.

l..cj

~ ~P-1~ .60lfJlf1

SHOAL MUDPIT

46.40DP-5.

2l.P-2e

37.70DP-11.

f\j

~III

17.boDP-6. :

--------------------1------ ----------[ip:a;-I

o

w w~ ~N ~N ~~ ~

~ ~I II II I

: 66.00 :: DP-1Oe :

r7Jd---------------l-------------~-------------- l_lJ5~[lJL:i~__IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

_-Lt2~Cll_0~~ 1----------------------- + l_lJ5~[lJLCl~__IL 53.90

D,-14eIII

40.60 :DP-13e i

IIII

uJ

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en::r0I»

:s::£:c."'0;:::;»;:,I»~~(')I»

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GROSS ALPHA >1 PCI/G

o 10 20

Scale = 20 feet

40

27.30DP-17.

IIIIIIIIIIIIIIIIIIIII

~ ~ ~rl rl rl

_-ltS~[l1_0~--------------------------------------------~ ~-------- -ltS~[l~Cl3lJ__N N N~ ~ ~~ ~ ~

"")----------,--------------,-----------~---------------{/-------------td---------------------------------------------td---------------------------------------------td------------------------------------------

~ ~ ~~ N ~~ ~ ~N ~ ~

~ ~ ~I I II I II I II I II I II I II I II I II I II I II I II I II II II II II II II II II II II II II II II II II II II II I I

I I 35 90 I_-ltS~[l1_5~JU -1-----~:fse----~-----------------------------j-------- -ltS~[l~~lJ__

IIIIIIIIIIIII

2b.40DP-15e

c"rQ~Sl)

c.(I):::::I-»:::::ISl)

-<c:!:oSl)

("')."o _.:::::IrQ

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:::::I(I)

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GROSS ALPHA >1 PC1/G

o 10 20

Scale = 20 feet

40

.10II

: 2OP-9.

w w~ ~N ~N ~N ~

~ ~I II II I

: 24~60 :: DP-1Oe :

_7~---------------1---------------------------------- l_lJ5~[)l_~~__

SHOAL MUDPIT

1"'1~

IIII

21.PODP-6e :

--------------------~------ -----------------

i DP-8eI

D II

: 40.10: DP-5.II

22.30:P-2e :

IIIIIII

: 23.20P-1.IIIII

27.40 :DP-11. i

III I

_-L~~[l1_0~~ ~----------------------- ~------------------------------ ~-lJ5~[)l-[l~--I I II I I: : b 37.70: : Dr-14eI I II I II I I

: i 57.90 i

: : DP-1Je:I I II I II I II I II I I

~ ~ ~

~ 8 ~P-1 ~N N .20 Nm m mm m m

en::T0A)

3i:cQ.

"'tJ;::;:»;jA)

-<!:!:(")A)

."Oee'

N o CI ;j ""'I- (") CD

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3i:A)

't'0-G)""'I0tiltil

OJCDlit


GROSS BETA> 1 PCI/G

o 10 20

Scale = 20 feet

40

C'Cec..,S»C.(6'::::sr+

»::::sS»

-<C';(")S»

0'"o -,::::sec

N (") ~I

N CD CD0 ::::s N

r+,.., -a.

~c.n0::::s

s::S»'C0....Q..,0tiltil

OJCDliT

~ /-------------td---------------------------------------------td---------------------------------------------td------------------------------------------

~ ~ ~~ N ~~ ~ ~~ N N~ ~ ~

I II II II II II II II II II II II II II I

: 25.80:i DP-17. iI II II II II II II II II II II II II I

_~~~[l~_5~~---------------------------------------------~-----~:f6i-?-g~-~9--------------------------~-------- ~~~[l~~3~__I I II I II I II I II I II I II I II I II I II I II I II I I

i 2~.30i DP-15eIIIIIIIIIIIIIIIIIIIII

~ ~ ~M M M

_~~~[l~_O~--------------------------------------------~ ~-------- -l~~[l~Cl3~__

N N Nm m mm m m/

SHOAL PROJECT/MUOPIT

GROSS BETA> 1 PCI/G

o 10 20

Scale = 20 feet

40

II

: 0.18OP-9.

w w~ ~~ ~~ ~~ ~

~ ~I II I

: 0.25 :: D~1~ :

~ l l_lJ5~[l~:i~__

SHOAL MUDPIT

0.39DP-S.

~

~II

0.2bDP-6e :

-------- 4 _

DP-8e

0.27P-2e

IIIII

0.38 :DP-11. i

II II I

_JLf2~CL1_0~jJ l----------------------- - - - - - - - - - - - - - - - - - - - - - - - l - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +_lJ5~[l~CL~__I II I

: ;., 0.24: Dr-14eI II II I

: 0.20 :i D~1~!I II II II I

~ ~ ~...--j ...--j ?P-1 ...--jN ~ ~N N .25 N~ ~ ~m m m

en~

0A)

3:c::C.

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-<ct.(")A)

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N :;, ~IN (") C'D...... C'D N:;, I.... ...a.

DJ enct.0:;,

3:A)

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...a.to)......


CESIUMI37>0.10 PCI/G

o 10 20

Scale = 20 feet

40

"")--~~~-,----~-~-~--~-------,-~-------~------,-----~-~-------(/

0.39DP-17.

C"Ccc.,D)c.CD

,::::l-»::::lD)

-<!:!'.(')D)

0"Tlo _.::::lcc

N (') c::I CD .,

N ::::l CDN _I\)., ID) ...a.ct. .....0::::l

s::D)"C0-0CDenc::3I

...a.W.....

1/

-------------td---------------------------------------------td---------------------------------------------td------------------------------------------~ ~ ~~ N ~~ ~ ~N N N~ ~ ~

I I II I II I I

I II II II II II II II II I

IIIIIIIIIIIIIIIIIII

: 0 23 :_-Lt2~[l1_5~~---------------------------------------------: ----rnP:f6i---~------------------------------i----------- -Lt2~[l~~3lJ__

I I II I II I II I II I II I II I II I II I II I II I ,I I II , I

: Ol24 :D~1~ ]

IIII

I

~ ~ ~rl rl rl

_-Lt2~[l1_0~--------------------------------------------~ ~-------- -Lt2~[l~CL3lJ__~ ~ ~~ ~ ~~ ~ ~


CESIUM137>O.10 PCI/G

o 10 20

Scale = 20 feet

40

.00

w w~ ~N ~N ~~ N~ ~

I II II I

1 D~1~ 1~~ l l_lJ5~[lJL:i~__

IIIIIIIIIIIIIIIIIIIIIIIIII

DP-8e

SHOAL MUDPIT

------------------~.::...::._---~-

DP-11.

~

~IIII

40.pODP-6e :

---~----------------~------IIII

D II

: 180.001 DP-5.II

25.001P-2e 1

IIIIIII

: 25.00P-1.IIIIIIIIIIIII

_JLtS~Cll_0~jJ l----------------------- + l_lJ5~[lJLCl~__I I II I II I II I /-,

: : D,-14eI I II I II I II I II I I

i i DP-1Je iI I II I II I II I II I I

W W W

~ N7P-1 ~

~ ~ N~ ~ ~~ ~ ~

en:::ro~

NI

NW


TPH DIESEL> 5 MG/KG

o 10 20

Scale = 20 feet

40

.00II

: 2OP-9.

w w~ ~N ~N ~~ N~ ~

I II II II I

i D~1~ i~~ l l_lJ5~[lJL:i~__

IIIIIIIIII

SHOAL MUDPIT

900.00DP-5.

180.00-1.

DP-11.

1"'1~

III

sa.coDP-6e :

--------------------1------ ----------D-p~a;

I

IIIIIIIIIIIII

I I II I I

_JL£2~[l1_0~jj ~----------------------- ~------------------------------ l_lJ5~[lJL[l~__I I II I II I II I b: : Dr -14eI I II I II I II I II I I

i i DP-13e !I I II I II I II I I

~ ~ ~;J ~ 7P-1 ~~ ~ ~N N Nm m mm ~ ~

en::r0D)

3:I:C."tI;::;:»;jD)

-<!:!':(')D) "T1- _.n CC

tv o I:I

;j atv.,J:;. (')

NCD I;j ...a.C:tOD)!:!':0;j

3:D)'t'0-:ED)0-CD

0


WASTE OIL> 1 MG/kG

o 10 20

Scale = 20 feet

40

Hole NO.:DP-1

Surface Elevation:5231.52Depth Depth Strata Rock/Soil Lith(feet) meters Unit

Eastin :557724 90Description

2

0.5

3

1.0

4

ORILLINGMATERIALS

SOILDECOM/GRANITE

Drilling materials. Very light gray, powdery, dusty, very fine grained, dry, unconsolidated, becoming coarser

after 1.0 ft depth.

Weathered granite. Between 2 and 3 ft, getting a small amount of a black, smeary substance on the outside of

the push rods. No reading on the PID, substance not seen in the soil.

Pushed once from 0 to 4 ft. and twice from 0 to 3.5 ft. before refusal. Depth to granite is between 3.5 and 4.0 ft.

Logged.By: IT Corp.lAM Welcher

Drilling Co.: Gregg Drilling Co.

Drillin Method: Direct Push

Figure 2-20Soil Boring Log for DP-1

2-25

IT CORPORATIONProject Shoal

Proiect No. 764044.03.08.00.00

Hole NO.:DP-2


Eastin :557711.20

Description

0.5

0.2

1.0

DRILLINGMATERIALS

"soiL'SILTY-SANDY

Drilling materials. Very light gray, powdery, dry, unconsolidated, becoming light gray to light brownish gray, silty

at 0.5 ft.

Light gray to light brownish gray, silty soil, with granite gravel at 1 ft. Could not push deeper than 1 ft Required

14 pushes to a depth of 1 ft to collect adequate sample volume.

Direct Push boring had refusal at 1.0 ft, could not push into granite.

Logged By: IT Corp.lAM Welcher

Drilling 'ce. Gregg Drilling Co.



2-26

Project ShoalProiect No. 764044.03.08.00.00

Hole No.:DP-3


Eastin :557697.70

Description

-----""----"---'-----------'-_._----------------

Drilling materials. Very light, gray, powdery, dry, unconsolidated, clayey-silt

Project Shoal

Proiect No. 764044.03.08.00.00


2-27

Light brown, silty-sandy soil with granite gravel. Bottom of boring is at 1 ft. due to refusal. Needed 7 pushed to

depth of 1 ft to get required sample volume.

DRILLINGMATERIALS

soilDECOM/GRANITE

0.2

0.5

Logged. By: IT Corp.lAM Welcher



Hole No.:DP-4


Eastin :557741.90Description

0.5

0.2

1.0

0.4

1.5

0.62.0

2.5

0.8

3.0

1.0

3.5

1.2

DRILliNGMATERIALS

·-sOiL.·SILTV-SANDY

SOILOECOM/GRANITE

Drilling materials. Very light gray, powdery, dusty, very fine grained, dry, unconsolidated.

From 1.5 to 2: Silty light gray to light brown, dry soil, with some roots. After 2 ft becoming a grayish-brown, and

coarser soil.

Weathered granite with a light brown soil matrix. Bottom of boring at 4.0 ft. due to refusal.




Figure 2-23Soil Boring log for DP-4

2-28

IT CORPORATIONProject ShoalProiect No. 764044.03.08.00.00

Hole No.:DP-5



0.5

0.2

1.0

04

1.5

0.62.0

2.5

0.8

Loggeq By: IT Corp.lAM Welcher



DRILLINGMATERIALS

soilSILTY·SANDY

·soiC·DECOM/GRANITE

Drilling materials. Light-gray, fine grained, powdery, very dry, unconsolidated. At 0.5 ft, drilling materials

starting to become moist, are darker gray, coarser, and more consolidated.

Between the depths of 1.5 to 2.0 ft, there is a color change between borings in the 2x2 ft area. From moderate

gray, fine grained, moist, with some hornbiende, to orangeish-brown, fine grained, consolidated, to

purplish-reddish brown, platey. Also found an angular gravel sized piece of rhyolite in this interval.

Moderate brown, silty soil.

Weathered granite with a reddish-brown soil matrix. Penetrated to 3 ft before refusal.

Project Shoal

ProiectNo. 764044.03.08.00.00

Hole NO.:DP-6


Eastin :557714.90

Description

0.5

0.2

1.0

0.4

1.5

0.62.0

2.5

DRILLINGMATERIALS

'soilDECOM/GRANITE

Drilling materials. Very light gray, dry, powdery to silty, unconsolidated. From 1-1.5 ft: slightly moist, light gray

to light brown silty-sandy with pebbles. From 1.5-2 ft: Moist, moderate gray, silty-sandy drilling material with

biotite flakes. Interface between mudpit and natural soil is at 2 ft.

At 2 ft becomes a moderate brown silty-sandy soil that becomes a reddish-brown soil matrix with weathered

granite. Unable to penetrate below 2.5 ft. Completed 2 pushes to this depth.

Direct Push boring had refusal at2.5 ft, could not push into granite.

Project ShoalProiectNo. 764044.03.08.00.00


2-30

Logged,By: IT Corp.lAM Welcher



r---~--'----L------'---~'-------L----- ·-----------------TT~~::IT"i7"'\l:YK_rr7"\li;_r_--__l

Hole NO.:DP-7


Eastin :557758.70

Description

0.5

0.2

1.0

0.4

1.5

0.62.0

2.5

0.8




DRILLINGMATERIALS

SOILSILTY-SANDY

Drilling materials. From surface to 1 ft: light gray, powdery, dusty, dry, very fine grained, unconsolidated.

Between 1 and 2 ft it appears that the drilling materials and soils alternate. Very light brownish-gray with some

roots, to light gray, drilling material to light yellowish-brown silty soil.

Gray-brown to moderate brown silty-sandy soil at 2 ft, becoming a moderate yellowish-brown soil with biotite

flakes and subangular granite towards 3 ft. Refusal at 3 ft, could not push deeper.


Hole NO.:DP-8


Eastin :557745.20

Description

0.5

0.2

1.0

0.4

1.5

0.6

ORILLINGMATERIALS Drilling materials. Light gray to white, powdery, dusty, very dry, some biotite flakes at 1 ft. Below 1 ft becoming

more consolidated, and darker gray in sample sleeve.

Very thin layer of the very fine grained, light brown soil. Can not push any further than 2 ft. The mud pit is

essentially sitting on the granitic bedrock at this location. Direct Push boring had refusal at 2.0 ft, could not push

i ni





2-32


ProiectNo. 764044.03.08.00.00

Hole NO.:DP-9

Surface Elevation:5231.80Depth Depth Strata Rock/Soil(feet) meters Unit

LithEastin :557775.70

Description

0.5

0.4

0.2

Drilling mud layer I

light-brownish gray with some organics, to light yellowish-brown to moderate yellowish-brown, silty soil, dry,

becoming coarser and darker with depth.

Surface at DP-9 is the light gray drilling material. light gray, fine grained, powdery, very dry.

is very thin here.

The bottom of the boring is at 4 ft. as this was a shallow sample and there was no refusal. The interface

between the decomposing granite and the granite is unknown and the interface is interpreted.

!

light brown, silty sand with angular granitic pebbles and weathered granite. Bottom of boring was at 4 ft, as this Iwas a shallow sample. Depth to interface of decomposing granite and granite is unknown, and the interface is !



SOILSILTV·SANDY

DRILLINGMATERIALS

SOIl.DECOM/GRANITE

0.8

0.6

1.0

1.2

1.5

2.5

2.0

3.5

4.0

4.5

1.0

3.0

1.4

Logged By: IT Corp.lAM welcher



IT CORPORATIONProject ShoalProject No. 764044.03.08.00.00

Hole NO.:DP-10



0.5

0.2

1.0

0.4

1.5

0.62.0

2.5

0.8

3.0

1.0

3.5

1.2

Logge~ By: IT Corp./AM Welcher



SOILSILTY-SANOY

sole"DECOM/GRANITE Grades from a moderate-brown, soil with biotite flakes at 2.5 ft. to a decomposing granite in a moderate brown

soil matrix at 3 ft. Bottom of boring is at 3.0 ft, did not penetrate further as this was a shallow sample.





Prolect No. 764044.03.08.00.00

Hole No.:DP-11


Eastin :55770970

Description

0.5

0.2

10

0.4

1.5

0.62.0

2.5

0.8

3.0

1.0

3.5

1.2

SOILSILTY-SANOY

·-soiC··DECOM/GRANITE

DP-11 was taken from outside the mudpit on an embankment in the surface soil. Grading from very fine

grained, light-brown to medium brown soil.

At 2 ft there is weathered granite in a medium, reddish-brown soil matrix. Bottom of boring is at 3.0, since this

was a shallow sample.









2-35


Proiect No. 764044.03.08.00.00

Hole NO.:DP-12



I

05

0.2

1.0

0.4

1.5

0.62.0

2.5

0.8

3.0

1.0

3.5

1.2

SOILSILTY-SANDY

SOILDECOM/GRANITE

Boring DP-2 is down gradient of Shoal impoundment. Sagebrush is surface vegetation. Dry, light gray-brown

silty soil with roots. At 2.0 ft begin to get granite pebbles.

Weathered granite with a reddish-brown soil matrix. Pushed twice from 0 to 4 ft. Bottom of boring was at 4.0 ft

as this is a shallow soil sample, only 0 to 3 ft was collected for the sample.

--~----------_._-------- ------- -----------------1


Drilling Co. Gregg Drilling Co.



2-36


Hole NO.:DP-13


Eastin :557808.60

Description

0.5

0.2

1.0

0.4

1.5

0.62.0

2.5

0.8

SOILSILTY-SANDY

soilDECOM/GRANITE

DP-13 is down gradient from the Shoallmpoundmenl. Light yellowish-brown, silty to sandy soil, dry, becoming

more coarse and gravelly towards 2.7 ft.

Weathered granite with a light brown soil matrix. Gregg drilling pushed twice from 0 to 3 ft, could not push

deeper than 3 ft due to refusal.


Drilling Co.. Gregg Drilling Co.



2-37


Hole NO.:DP-14


Eastin :557825.90

Description

0.5

0.2




SOILSILTY-SANOY

·sOiL.···DECOM/GRANITE

DP-14 is located downgradient of the Shoallmpoundmenl. Light gray-brown, silty-sand soil with fine gravel,

dry. Sagebrush vegetation is on surface.

Weathered granite with reddish-brown matrix.

Fresh granite in sampling shoe, refusal at 1 ft. Granite bedrock was encountered at 1.0 ft., the maximum depth

of the boring.

Project Shoal

Proiect No. 764044.03.08.00.00

IHole NO.:DP-15

Surface Elevalion:5259.89Depth Depth Strata Rock/Soil Lith(feet) meters Unit

Eastin :557367.40

Description

Granite bedrock was encountered at 2 ft.. This was the maximum depth of the boring.

Weathered granite with a reddish-brown soil. 2 ft is the maximum depth of the boring.

Grassy vegetation and sagebrush on surface. DP-15 is approx. 500 ft. upgradient of the Shoal Impoundment.

Silty, gray-brown to yellow- brown soil, dry, with roots, becoming yellowish-brown to reddish brown, sandy-silty

soil with granite pebbles towards 1.9 ft.


Proiect No. 764044.03.08.00.00


SOILSILTV·SANDY

. soil.DECOM/GRANITE

1.5

0.2

0.5

0.6

0.4

1.0




2-39

Hole No.:DP-16


Eastin :557383.50

Description

0.5

0.4


Grassy vegetation and sagebrush on surface. DP-16 is approx. 500 ft. upgradientofthe Shoallmpoundmenl.

Silty, gray-brown to yellow- brown soil, dry, with roots, becoming yellowish-brown sandy-silty soil with granite

pebbles towards 3.8 ft.

The interface between the decomposing granite and the granite is unknown and the interface is interpreted.

The boring only penetrated to a depth of 4.0 ft. The interface between the decomposing granite and the granite

is unknown and the interface is interpreted.

Weathered granite with a yellow-brown matrix. Stopped pushing at4 ft. as this was a shallow sample, no

refusal. Gregg Drilling pushed twice from 0 to 4 feet to obtain adequate sample volume.

SOILSILTY-SANDY

"-soilDECOM/GRANITE

0.8

0.6

1.0

1.2

0.2

2.5

2.0

4.0

3.5

1.5

3.0

1.0

Logged, By: IT Corp.lAM Welcher

Drilling co.: Gregg Drilling Co.


HoleNO.:DP-17

SurfaceElevation:525807Depth Depth Strata Rock/Soil Lith(feet) meters Unit


0.5

1.0

0.2

Grassy vegetation and sagebrushon surface. DP-17 is approx. 500 ft. upgradientof the Shoallmpoundmenl.

Silty,gray-brownto yellow- brownsoil, dry, with roots, becoming yellowish-brown sandy-siltysoil with granite

pebblestowards 3.0 ft.

Weathered granitewith yellow-brownsandy-siltysoil matrix.

The boringwas a shallowsoil sampleand only penetrated to a depth of 4.0 ft. The interfacebetweenthe

decomposing graniteand the granite is unknownand the interfaceis interpreted.

The boringwas a shallow soil sampleand only penetrated to a depthof 4.0 ft. The interfacebetween the

decomposing graniteand the granite is unknown and the interfaceis interpreted.

SOILSILTY·SANDY

'soiL."DECOM/GRANITE

1.0

0.8

0.6

1.2

04

2.5

3.0

3.5

4.0

2.0

4.5

1.5

14

Loggecj By: IT Corp.lAMWelcher

Drilling Co.: Gregg DrillingCo.



Hole NO.:DP-18


Eastin :557729.90

Description

--------'""'"'''''--------l........---~--~~~~----------------------_____1

as

0.2

1.0

0.4

1.5

0.6

DRILLINGMATERIALS

'soiL"GILTY-SANDY

DP-18 is in Shoallmpoundmenl. Drilling material. Very light gray to medium gray, powdery, dry,

unconsolidated becoming slightly more consolidated at 1.5 ft.

Moderate brown sandy-silt, with subangular granite pebbles.

Logge~ By: IT Corp.lAM Welcher




2-42

IT CORPORATIONProject ShoalProiectNo. 764044.03.08.00.00

- ------

Table 2-1Summary of Shoal Direct Push Samples

Sample Date Location', Shallow/Deep '! Depth Depth COCa ,CommentsNumber Collected Sample; (meters) • (feet) Number,

__.__.._~_"'~.. . _~____ _ L ... ,---...----...-------L---_- ~ .. I .. ._,_._ ....__.__________________ _ ..__.. _

~§§gQ2g~1 9/15/96, D~_-1~_1__ Sh~lIow '0 - g.6!_ '_~~~~~809 iShallow ~()~posite Sample inside_MU~ Pit _~S00002 9/15/96 --r- __~__1_~ ___l---[)t3.~-- iO.6~~ __--.!..22T 2 - 4 5~~809 I Dee£~()m"posite Sample inside MU9 Pit ~__PSS00003 9/11/96 DP-1! Quality Control (QC)' N/Ab N/A 485538 iField Blank- , ·4-------- , '---~----,. -:~ ------------PSS00004 9/11/96 DP-1 t- QC I N/A ; N/A 485538! EqUipmentRinsatePSS00005 9/15/96-, DP-2 --.~ Shallow-~ i 0-0.31 t~6---1-,-----s:fgeo9 ,Waste Manage~ment Composite -- ~-PSS00006 9/15/96 i DP-2--- Shallow i 0- 0.31! 0-1 • 519809 15Uprrcafe-ofSample PSS00005 u_ --------~--

PSS00007 9/15/96 +__DP-3 _--+-__ Yhallow ~-~~J-519809~ow Compos~te Sample ~n~~deMu~--- _PSS00008 9/15/96 t"- DP-4 +-__~Shallow ' 0 - 0.61; a----~1- 519809, Shallow Composite Sample inside Mud Plt _PSS00009 ----'-- 9/15/96 __ DP-4 '___ _ Deep Q.61 -1.2212 -4 i 519809 ,Deep Composite Sample inside Mud Pit _PSS00010 9/15/96 t~ DP-5 t Shallow 0-0.61 ; 0 __2 i 519809 _Waste Management Composite...LaboratorygC _PSS00011 9/15/96 I __~ DP-5_~ Deep___ 0.61 - .0911..?~ ! ~1980~ __ Deep Composite_Sample inside Mud Pit -c--::--c----:--=-=------

PSS00012 N/A DP-5 N/A i N/A i N/A! N/A Not Collected...Unique number not needed for Lab QCPSS000131- 9/15/96 ~-6_ -- Shallow=-_~~ 0- 0.76TI- 2.51 5~~~09_Shaliow~()rTlPosite Sample insideMllci"pit----- ._.~PSS00014 I 9/15/96 DP-7 ShalloV>'_~ ~ 0.6~_~~Q - 2 i 5~_9809 ,Shallow C~r:!1posite Sample inside_Mud Pit_ ___PSS00015 -r 9/6/96 DP-8 Shallo~_ i 0-0.61__ 0-2 , 4Q4697 !Waste_fIt1~_~agement Composi~~ -j

PSS00016 ! 9/15/96 DP-9 Shallow! 0-0.91 0-3 i 519809 I Shallow Composite Sample inside Mud Pit~ Pssooo:r:7 --! 9/6/96 I DP-10 Shallow --------,~1--O-=-3-'--404697- ShaTIOwComposite Sample adjacent to Mud--PiT~-----

w PSS00018! 9/6/96 I DP-1f---- Shallow 0-0.91--'-0=-3----404697 Shallow Composite SarTlple--acJ}acenttOMUd-Pit-----

PSS0001~~----t- 9/16/96 DP__~=:- ~hallow 0-0.91 1- a-~~_ 519801__§Eallow CompositEl_Sample Downgra~i_e.~~_-froin MUd_~iC=-PSS00020 ' 9/16/96 i DP-13 +- Shallow 0-0.91 0-3, 519801 Shallow Composite Sample Downgradient from Mud PitPSS00021 9/16/96 DP-14 -~ Shallow J 0-0.31 0-5 i 519801- .Shallow Composite Sample Downgradient from MU~PiCPSS00022 9/16/96 DP-15 __ !__ Shallow __' 0-0.61 0:~19801 IShaliow Composite Upgradientfrom Mud PiLLab QC__PSS00023 9/16/96' DP-15 1- Shallow 0-0.61 _O~! 519801 iDuplicat~ofSamplePSSOg022 _~ _PSS00024 . 9/15/96 DP-7 I Deep 0.61 - 0.91! 2=--31519809 Deep Composite Sample inside Mud PitPSS00025 ---'~-- N/A - DP-8 _~__===-_N/A__~-==_+ N/A ~ N7A1--':"~~epcomposite Sample not collected duetoretUSal n _=PSS00026 __ -t·! 9/16/96 _ DP-16__ Shallow I a-0.91_,_Q~J 5198Q.!_u~allow Composite Sample upgradient from Mud P~t _PSS00027 9/16/96 DP-17 -r-. _ Shallow i a-0.91~ ~~_§'!~~Q'1.._~Shaliow Composite Sample upgr~.9ie~!.frol1"J..~_~d Pit _

:~~~~~~~ :;~;: I g::~:=-r-- S~~~W==..O~1- ~:;t~ ;23~-~~ I.::~':~~~()to~op:~~=i~a:~T!I~~~u~~:E=====-· ..•=PSS00030 9/16/96 -L DP-~~_+ QC ~__ ,N/A _ N/A_ i 519805~ld Blan~ ..m~ ••.• _

PSS00031 9/16/96 DP-1;"' __ t_ m QC .! N/A li!~_~a07 ,EquiPrTlE:l!1t Rinsate .. .____ __ ___~Q001 __~{11/96 _ DP-1 .. __ QC 'i. _!'l!..~_f\J~_485538 Trip Bla~~ Quanterra La_b,S!-..l-ou~__ .PST00002 9/6/96 i DP-8-- QC -, N/A N/A I 404697 Trip Blank, Quanterra Lab, St Louis ..--- - ----PST00003 . 9/15/96 t- ~ DP-5 -~-------ac- --, .--~~ N/A -1 519809'Tnp-Blank~QuanterraLab:- StLCllJis--- - - -- -----

I-=--=c=-::-c:-::-:c-----t -------t- ---~----~---------- -- ------ -1- ~ -----------

PST00004 ! 9/16/96 i DP-15 i QC N/A N/A 519807 jTrip Blank, Quanterra Lab, si Louis

'Chain of Custody

"Not Analyzed

Table 2-2Shoal Mud Pit Analytical Data

(Page 1 of 3)

Sample Sample # Sample Matrix Arsenic Barium Barium Cadmium Chromium Chromium Lead Mercury SeleniumLocation Date mg/La mg/L mg/kgb mg/L mg/L mg/kg mg/L mg/L mg/L

DP-1 PSSOOO01 9/15/96 Soil N/Ac N/A 234 N/A N/A 7.7 N/A N/A N/ADP-1 PSSOOO02 9/15/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/A

DP-2 PSSOOO05 9/15/96 Soil 0.02 (ND)d 1.2 N/A 0.005 (ND) 0.042 N/A 0.025 0.0001 (NO) 0.028 (ND)DP-2 PSSOOO06 9/15/96 Soil 0.02 (ND) 1.2 N/A 0.005 (ND) 0.046 N/A 0.030 0.0001 (NO) 0.028 (ND)DP-3 PSSOOO07 9/15/96 Soil N/A N/A 206 N/A N/A 12.6 N/A N/A N/ADP-4 PSSOOO08 9/15/96 Soil N/A N/A 437 N/A N/A 10.9 N/A N/A N/ADP-4 PSSOOO09 9/15/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-5 PSSOO010 9/15/96 Soil 0.023 2.7 N/A 0.0078 0.092 N/A 0.014 (NO) 0.0001 (NO) 0.028 (ND)DP-5 PSSOO011 9/15/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-6 PSSOO013 9/15/96 Soil N/A N/A 240 N/A N/A 9.7 N/A N/A N/ADP-7 PSSOO014 9/15/96 Soil N/A N/A 710 N/A N/A 10.7 N/A N/A N/ADP-7 PSSOO024 9/15/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-8 PSSOO015 9/6/96 Soil 0.26 (ND) 0.95 N/A 0.013 (ND) 0.11 N/A 0.17(ND) 0.0001 (NO) 0.21(ND)DP-9 PSSOO016 9/15/96 Soil N/A N/A 235 N/A N/A 7.9 N/A N/A N/A

DP-10 PSSOO017 9/6/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-11 PSSOO018 9/6/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-12 PSSOO019 9/16/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-13 PSSOO020 9/16/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-14 PSSOO021 9/16/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/ADP-15 PSSOO022 9/16/96 Soil N/A N/A 104 N/A N/A 7.4 N/A N/A N/ADP-15 PSSOO023 9/16/96 Soil N/A N/A 84.2 N/A N/A 6.4 N/A N/A N/ADP-16 PSSOO026 9/16/96 Soil N/A N/A 141 N/A N/A 10.2 N/A N/A N/ADP-17 PSSOO027 9/16/96 Soil N/A N/A 103 N/A N/A 10.2 N/A N/A N/ADP-18 PSSOO028 9/15/96 Soil N/A N/A 292 N/A N/A 18.5 N/A N/A N/ADP-18 PSSOO029 9/15/96 Soil N/A N/A N/A N/A N/A N/A N/A N/A N/A

aMilligram(s) per liter

bMlligram(s) per kilogram

eNot Analyzed

dReported value is below detection limit.

·PicoCurie(s) per gram

fNot detected


(Page 2 of 3)

Sample Sample # Sample Matrix Silver Gross Alpha Gross Beta Bismuth-214 Cesium-137 Lead-212 Lead-214 Potassium-40

Location Date mg/L pCi/ge pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g

OP-1 PSSOOO01 9/15/96 Soil N/A 20.1 18.9 NOt 0.21 (NO) 0.88 1 25.3OP-1 PSSOOO02 9/15/96 Soil N/A 32.3 23.2 NO 0.19 (NO) 1.2 0.68 24.5

OP-2 PSSOOO05 9/15/96 Soil 0.01 (NO) 10.6 22.3 NO 0.27 (NO) 0.96 1.22 18.5OP-2 PSSOOO06 9/15/96 Soil 0.01 (NO) 21.0 20.8 NO 0.23 (NO) 0.78 0.92 23.2OP-3 PSSOOO07 9/15/96 Soil N/A 10.2 20.5 NO 0.25 (NO) 1.23 0.8 26.8OP-4 PSSOOO08 9/15/96 Soil N/A 23.8 20.7 NO 0.35 (NO) 1.23 0.99 16.4OP-4 PSSOOO09 9/15/96 Soil N/A 27.4 27.3 NO 0.22 (NO) 1.48 1.21 25.1OP-5 PSSOO010 9/15/96 Soil 0.01 (NO) 27.7 18.5 NO 0.22 (NO) 1.01 1.31 15.5OP-5 PSSOO011 9/15/96 Soil N/A 46.4 40.1 1.14 0.39 (NO) 1.86 1.06 16.9OP-6 PSSOO013 9/15/96 Soil N/A 17.0 21.0 NO 0.25 (NO) 1.11 0.83 23.8OP-7 PSSOO014 9/15/96 Soil N/A 30.7 24.0 0.67 0.24 (NO) 0.94 0.85 24.7OP-7 PSSOO024 9/15/96 Soil N/A 35.0 25.3 0.99 0.21 (NO) 1.43 0.99 23.7OP-8 PSSOO015 9/6/96 Soil 0.016 (NO) 33.7 20.7 NO 0.24 (NO) 0.98 NO 21.8OP-9 PSSOO016 9/15/96 Soil N/A 28.1 25.1 NO 0.18 (NO) 1.41 1.09 24.8

OP-10 PSSOO017 9/6/96 Soil N/A 66.0 24.6 0.68 0.25 (NO) 0.5 0.87 27.2OP-11 PSSOO018 9/6/96 Soil N/A 37.7 27.4 NO 0.38 (NO) 2.2 NO 22.1OP-12 PSSOO019 9/16/96 Soil N/A 19.6 24.2 NO 0.25 (NO) 1.12 1.03 24.8OP-13 PSSOO020 9/16/96 Soil N/A 40.6 57.9 1.26 0.20 (NO) 1.34 1.12 27.7OP-14 PSSOO021 9/16/96 Soil N/A 53.9 37.7 1.33 0.24 (NO) 2.04 1.11 20.7OP-15 PSSOO022 9/16/96 Soil N/A 23.9 27.1 1.03 0.24 (NO) 1.01 0.95 23.2OP-15 PSSOO023 9/16/96 Soil N/A 25.4 27.3 1.36 0.23 (NO) 0.85 0.93 25.4OP-16 PSSOO026 9/16/96 Soil N/A 35.9 30.0 0.82 0.23 (NO) 1.04 0.83 21.2OP-17 PSSOO027 9/16/96 Soil N/A 27.3 25.8 NO 0.39 (NO) NO NO 17OP-18 PSSOO028 9/15/96 Soil N/A 15.3 18.5 NO 0.46 (NO) NO 1.75 17.1OP-18 PSSOO029 9/15/96 Soil N/A 56.9 47.1 NO 0.24 (NO) 1.17 0.91 18.7



eNot Analyzed

"Reported value is below detection limit.

ePicoCurie(s) per gram

'Not detected


(Page 3 of 3)

Sample Sample # Sample Matrix Radium-226 Radium-228 Thallium-208 Thorium-234 Tritium Diesel Waste Oil

Location Date pCi/g pCi/g pCi/g pCi/g pCi/g mg/kg mg/kg

OP-1 PSSOOO01 9/15/96 Soil NO NO NO NO 0.005 25 (NO) 180OP-1 PSSOOO02 9/15/96 Soil 3.11 NO 0.48 NO 0.0008 N/A N/A

OP-2 PSSOOO05 9/15/96 Soil NO NO 0.31 NO 0.006 25 (NO) 130OP-2 PSSOOO06 9/15/96 Soil NO 1.03 0.3 NO 0.005 25 (NO) 140OP-3 PSSOOO07 9/15/96 Soil NO NO 0.72 NO -0.006 25 (NO) 50OP-4 PSSOOO08 9/15/96 Soil NO NO 0.34 NO -0.002 25 (NO) 300OP-4 PSSOOO09 9/15/96 Soil NO NO 0.48 NO 0.005 N/A N/AOP-5 PSSOO010 9/15/96 Soil 5.23 1.41 0.35 NO 0.076 180 900OP-5 PSSOO011 9/15/96 Soil NO NO NO NO 0.01 N/A N/AOP-6 PSSOO013 9/15/96 Soil 3.75 1.53 0.44 NO 0.003 40 93OP-7 PSSOO014 9/15/96 Soil NO NO 0.32 1.94 0.003 25 (NO) 190OP-7 PSSOO024 9/15/96 Soil NO NO 0.48 NO 0.002 N/A N/AOP-8 PSSOO015 9/6/96 Soil NO NO 0.37 NO 0.011 300 (NO) 300 (NO)OP-9 PSSOO016 9/15/96 Soil NO 1.59 0.72 NO -0.002 25 (NO) 25 (NO)

OP-10 PSSOO017 9/6/96 Soil NO NO 0.34 NO -0.004 N/A N/AOP-11 PSSOO018 9/6/96 Soil NO NO NO NO 0.013 N/A N/AOP-12 PSSOO019 9/16/96 Soil 5.78 NO 0.36 NO -0.003 N/A N/AOP-13 PSSOO020 9/16/96 Soil NO 1.76 0.57 NO -0.009 N/A N/AOP-14 PSSOO021 9/16/96 Soil NO NO 0.39 NO -0.005 N/A N/AOP-15 PSSOO022 9/16/96 Soil 2.84 1.23 0.36 NO NO N/A N/AOP-15 PSSOO023 9/16/96 Soil NO NO 0.42 NO NO N/A N/AOP-16 PSSOO026 9/16/96 Soil 3.43 NO 0.31 1.87 NO N/A N/AOP-17 PSSOO027 9/16/96 Soil NO NO 0.74 NO NO N/A N/AOP-18 PSSOO028 9/15/96 Soil NO NO 1.06 NO -0.003 110 890OP-18 PSSOO029 9/15/96 Soil NO NO 0.37 NO 0.005 N/A N/A



eNot Analyzed

"Reported value is below detection limit.

ePicoCurie(s) per gram

'Not detected

Table 2-3a and 2-3bShoal Mud Pit Quality Control Sample Data

Table 2-3a

ISample# ISample Date I Matrix IArsenic Barium Cadmium Chromium Lead Mercury Selenium Silver

ug/La ug/L ug/L ug/L ug/L mg/Ld ug/L ug/L

PSSOOO03 9/11/96 Water N/Ab 1.8 N/A 2.3 (NO) N/A N/A N/A N/APSSOOO04 9/11/96 Water 0.002 (NO)c 0.083 0.0005 (NO) 0.0023 (NO) 0.0014 (NO) 0.0001 (NO) 0.0028 (NO) 0.001 (NO)PSSOO030 9/16/96 Water N/A 0.9 N/A 4.4 (NO) N/A N/A N/A N/APSSOO031 9/16/96 Water 20 (NO) 420 5 (NO) 23 (NO) 16 0.0001 (NO) 28 (NO) 10 (NO)

Table 2-3b

I Sample# ISample Date I Matrix IDiesel Waste Oil Tritium Gross Alpha Gross Beta Cesium-137 Potassium-40mg/L mg/L pCi/Le pCi/L pCi/L pCi/L pCi/L

PSSOOO03 9/11/96 Water 0.5 (NO) 0.5 (NO) -3.3 0.15 0.28 2.46 (NO) NOt

PSSOOO04 9/11/96 Water 0.5 (NO) 0.5 (NO) 64.4 0.15 0.16 0.32 (NO) NOPSSOO030 9/16/96 Water 0.5 (NO) 0.5 (NO) -50 0.63 -0.43 7.71 (NO) NOPSSOO031 9/16/96 Water 0.5 (NO) 0.5 (NO) -112 1.81 -0.43 8.05 (NO) NO

Note: Analytical results for volatile organic compounds for trip blank samples PST00001, PST00002, PST00003, and PST00004 were at nondetectable levels.Analytical results for volatile organic compounds and semi-volatile organic compounds for rinsate blanks PSS00004 and PSS00031were at nondetectable levels.

aMicrogram(s) per liter

"Not Analyzed

cReported value is below detection limit

dMilligram(s) per liter

·PicoCuries per liter

fNot detected

3-1

3.0 Subsurface Investigations CAU No. 447

Groundwater contamination at PSA is associated with the installation and detonation of the Shoal

nuclear test device. The purpose of the PSA subsurface investigation was to provide input to a

groundwater model and to determine if contamination exists within groundwater proximal and/or

downgradient of the Shoal test.

Subsurface investigations included the drilling and completion of four groundwater monitoring

wells in the area of the Project Shoal underground nuclear test. The wells were drilled to depths

approximately 396.24 m (1,300 ft) below the ground surface. Four principal locations and one

alternate location were identified. Drilling pads and associated sumps were constructed at all five

locations to support drilling of the wells. Due to uncertainty regarding the local groundwater

gradient, the alternative site (HC-3 alt) was prepared on the western edge of the PSA in case the

gradient determined from the first wells was in the western direction. Figure 3-1 depicts the well

site locations.

3.1 Scope of WorkThe work scope for the subsurface investigation included the drilling of a 20-cm (8.0-in.) borehole

using air rotary reverse circulation methods to depths sufficient to obtain approximately 91.4 m

(300 ft) of saturated rock in the borehole below the static water level. As drilling advanced,

hydrogeologic data were collected to determine pertinent hydrogeologic conditions. In addition

to a program of regularly monitoring drill cuttings and fluid for lithologic and hydrologic

characteristics, drilling effluent was collected to determine if radionuculides from the Shoal test

were present. Well development followed the completion of drilling to attempt to remove

drilling-related fluids from the well.

Upon completion of drilling and well development, a suite of downhole geophysical logs was run

to further determine hydrogeologic conditions in the wells. The wells were then completed by

installing 14-cm (5.5-in.) steel casing to a point just above the expected static water level. The

casing was landed at the surface and left suspended in the well without being grouted.

3.2 Drill Site and Sump ConstructionFive drill site locations were prepared to facilitate the installation of the PSA monitoring wells.

Surface construction of the drill pads and sumps was conducted by Meissner Services of

Lovelock, Nevada, a subcontractor under the direct supervision of the IT Corporation site

3-2

manager. Installation of liner materials in the excavated storage sumps was completed by

IT Corporation personnel.

The drilling locations consisted of level earthen pads of cut and fill construction, measuring

45.7 m (150 ft) in length and 45.7 m (150 ft) in width. Two sumps were excavated within the pad

area as specified in the Fluid Management Plan (FMP) for the Project Shoal Area Offsites

Subproject (DOE/NV, 1996c). Sump No. 1 was constructed with a surface dimension of

approximately 50 ft x 50 ft and 2:1 sloping walls to a depth of 6.0 ft. Sump No. 2 was

constructed with a surface dimension of 40 ft x 40 ft and 2:1 sloping walls to a depth of 6 ft.

As specified in the FMP (DOE/NV, 1996c), sump liners were installed in each of the excavated

sumps. The sumps were constructed and lined in two configurations. A single 36-mil (.036-in.)

Hypalon liner was installed in one of the sumps to provide for storage of uncontaminated fluids

and cuttings, and two 36-mil (.036-in.) liners separated by 200-mil (.200-in.) geonet were

installed with a leak detection system in the second sump. Liners were all installed on

0.34 kilogram (12-ounce) Geotextile material to prevent puncture from earthen materials within

the excavated sump.

3.3 Summary of Monitoring Well Drilling and Completion OperationsDrilling of monitoring wells at the PSA commenced on September 9, 1996, and was completed on

November 13, 1996. Forty-one days were spent drilling and completing the wells. Operations

were conducted 7 days per week, 24 hours per day for the term of the project. Several short

breaks (2 to 3 days) were taken due to unplanned equipment breakdowns and to give the staff a

break.

The four monitoring wells were drilled in the following order: HC-1, HC-2, HC-4, and HC-3. All

wells were drilled to approximately 396.2 m (1,300 ft) bgs. The total drilled footage for the

project was 1,600.8 m (5,252 ft). Well Site HC-3 was used instead of Alternative 3 because the

results obtained from the installation of Wells HC-1, HC-2, and HC-4 indicated that the

potentiometric surface dipped to the east. All drilling was conducted using air rotary reverse

circulation methods. Wells were completed by installing threaded and coupled 14-cm (5.5-in.)

carbon steel casing to a point just above the static water table. The casing was not cemented in

place to facilitate later removal or repositioning based on modification of scientific objectives or

changes in static water levels within the wells. Well HC-1 was originally drilled and completed to

a depth of 323.1 m (1,060 ft); however, it was later reentered, drilled, and completed to a depth

of 409.35 m (1,343 ft) because of falling water levels within the well.

3-3

The groundwater flow gradient was interpreted based on water levels obtained from the four

wells installed in the subsurface investigation. The flow gradient is apparently in an east-

southeast direction as depicted in Figures 3-2 and 3-3.

Regular monitoring of drilling effluent for tritium and other radionuculides was conducted on all

of the wells during drilling and development. No indications of radiation above background levels

were noted.

Drilling and well completions were conducted by Beylik Drilling of North Highlands, California.

Borehole geophysical logging was conducted by Century Geophysical Corporation of Tulsa,

Oklahoma, and borehole video logs and additional geophysical logging were conducted by the

Desert Research Institute (DRI). Beylik Drilling and Century Geophysical Corporation were both

direct subcontractors to IT. Well drilling, construction, and geophysical logging operations were

directly supervised by IT.

eHC3-Alt= = = = = = -=-.--=-)

"4532

L.EGEND

@ Abandoned well or boring

• Proposed well (approximate location)

- Withdrawn area boundary

--- Topographic contour (Interval =200 feet)

"5365 Point elevation

• - - Unpaved road

SGZ Surface ground zero

- - - Approximate location of groundwater divide

0,6 1,2 Kilometers

SCALE

0.25 0.5 Miles

Source: DOE, 1996

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3-4

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4-1

4.0 Well HC-1 Summary of Operations

Well HC-1 was initially drilled to a depth of 323.09 m (1,060.0 feet) between

September 26, 1996, and October 2, 1996, and then reentered on October 25, 1996, and

advanced to a depth of 409.35 m (1,343.0 ft). The final completion of the well occurred on

October 28, 1996. A total of 13 days, including both phases, was spent drilling and completing

this well. Figure 4-1 is a summary of the drilling parameters for the well. Note that Figures 4-1

through 4-10 and Tables 4-1 through 4-5, cited in the following text, are located at the end of this

section.

Prior to mobilization, all drilling equipment was decontaminated at the on-site decontamination

pad using a combination of steam cleaning and high pressure washing. Decontaminated

equipment was subjected to a final radiologic screening prior to movement to the drill site.

Initial drilling of Well HC-1 commenced on September 26, 1996. A 30.48-cm (12.0-in.) hole was

drilled to a depth of 31.00 m (101.7 ft). A 21.90-cm (8.625-in.) conductor casing was installed in

the borehole and cemented in place. The main hole of the well was advanced using an 20.3-cm

(8.0-in.) downhole percussion hammer and air rotary reverse circulation drilling techniques to an

initial total depth (TD) of 323.09 m (1,060.0 ft).

The initial depth of Well HC-1 was determined from where water was first encountered during

drilling and then compared to historic water levels from nearby wells. Given this information, it

was decided the well would provide adequate open borehole below the estimated water level for

later scientific investigations to be conducted by DRI.

Due to unstable, sloughing borehole conditions, the well could not be developed/cleaned using

reverse circulation drilling techniques. The drilling configuration was then changed to

conventional direct circulation, and the well was developed. Foam drilling additives were used

initially to establish circulation. The well was then completed by installing 13.97-cm (5.5-in.)

carbon steel casing to a depth of 291.51 m (956.4 ft) and landing the casing in suspension from a

landing plate mounted on the surface casing.

4-2

Water-level monitoring, conducted by DRI and IT after completion of the well, indicated that

water levels within the well were consistently falling with time. These water levels indicated that

the well was not drilled to a depth suitable for scientific study of the saturated portions of the

well.

After approval by the DOE, the 13.97-cm (5.5-in.) intermediate casing was pulled from HC-1,

and the well was reentered with a 20.00-cm (7.875-in.) percussion hammer. The bottom of the

hole was drilled using air rotary reverse circulation drilling techniques and advanced to a depth of

409.35 m (1,343.0 ft). The hole began to slough in at this point, and additional time was spent

working to extract the drill pipe from the hole. After pulling the 20.00-cm (7.875-in.) drilling

assembly from the hole, a depth check was made to determine the TD of the well. It was

determined that the well had sloughed in to a depth of 406.91 m (1,335.0 ft).

Intermediate casing (13.97 cm [5.5 in.]) was then re-installed in the well to 333.70 m (1,094.8 ft)

bgs. After landing the casing, the hole was reentered with a 11.75-cm (4.625-in.) tricone button

bit, again using reverse circulation in an effort to clean the hole out to the total drilled depth of the

well (409.35 m [1,343.0 ft]). The well was circulated and cleaned to the bottom, and the final

depth of the well was 403.80 m (1,324.8 ft). The drilling assembly was then pulled from the

borehole, and the drilling equipment was rigged down for decontamination and mobilization to

HC-2.

4.1 Well HC-1 GeologyWell HC-1 encountered a fractured, coarse-grained biotite granite throughout the drilled interval.

Several, thin, 3- to 6-m (10- to 20-ft) intrusive dikes of Tertiary-aged andesite were noted

between 274.93 and 281.33 m (902.0 and 923.0 ft). The andesite dikes were localized along

steep fault and fracture zones within the granite. These andesite filled fracture/fault zones were

primarily responsible for borehole sloughing and unstable drilling conditions. Descriptions of the

lithologies that were encountered are provided as Figure 4-2.

4.2 Well HC-1 Hydrology Several elements of hydrologic importance were monitored during and after completion of the

well. During drilling, two parameters were consistently compared: the volume of drilling fluid

(water) injected to facilitate drilling and the volume of fluid produced as discharge to the surface.

Figure 4-3 illustrates the relationship between injected drilling fluids and drilling fluid produced at

the surface.

4-3

In addition to volumetric measurements, all drilling fluids injected into the borehole were tagged

with a tracer solution of Lithium Bromide (LiBr). The concentration of LiBr in solution was

monitored on a regular basis to estimate groundwater production within the borehole. Table 4-1

illustrates LiBr concentrations noted in produced fluids.

Water production from the well was minimal; monitoring data and water level recovery data

suggests the well was capable of producing approximately 2.8 to 3.8 liters per minute (L/min)

(0.75 to 1.0 gallons per minute [gpm]). During several instances, the well was capable of

intermittent production on the order of 11.4-18.9 L/min (3.0 to 5.0 gpm). These readings suggest

production from perched water zones along fault or fracture zones. These zones were of limited

impact as their storage capacity was exhausted, and in turn, their contribution to the well

decreased.

Water-level monitoring was conducted during the construction of the well and continued after

completion using transducers set by DRI. Table 4-2 provides water levels obtained for the term

of IT involvement in PSA field work.

4.3 Well HC-1 Geophysical SurveysUpon completion of drilling to the initial TD of 323.09 m (1,060.0 ft) and after well development,

a suite of downhole geophysical surveys was run within the borehole. Upon reentering the well

and deepening the borehole, a second phase of geophysical logging occurred to capture

geophysical data from the deepened interval 323.09 to 409.35 m (1,060.0 to 1,343.0 ft). Due to

the instability of the borehole, it was necessary to install casing across an interval not logged in

the first logging session; in turn, certain intervals of the borehole were not available for logging.

Deviation surveys were also conducted within the borehole and indicated the borehole was

deviated 14.2 degrees from vertical in a west-southwest direction. The deviation of the hole

placed the bottom of the hole 79.68 m (261.4 ft) west-southwest of the collar and resulted in a

true vertical depth of 394.68 m (1,294.87 ft) bgs.

Table 4-3 provides a summary of the geophysical logs run for the well. Figures 4-4 to 4-7

provide a condensed illustration of log traces for HC-1.

4-4

4.4 Well HC-1 Radiologic MonitoringMonitoring of discharge effluent from drilling was conducted as specified in the Project Shoal

Site-Specific Health and Safety Plan (SSHASP) (DOE/NV, 1996b) and the FMP for the Project

Shoal Area Offsite Subproject (DOE/NV, 1996c). Regular radiological monitoring of discharged

drilling effluents, including both fluids and solids, was conducted by Bechtel Nevada radiation control

technicians.

Samples were screened using hand-held instruments at the time of collection. Effluents were further

analyzed for tritium and other radionuculides using on-site laboratory monitoring equipment. Tritium

activities from fluid and swiped samples were recorded using a Packard Liquid Scintillation

instrument. Other radionuculides were analyzed using Canberra gamma spectroscopy instrumentation.

Based on field monitoring, Well HC-1 effluents were found to contain natural background levels of

tritium and all other radionuculides. Figure 4-8 provides a profile of tritium encountered in the well.

4.5 Well HC-1 Well ConstructionWell HC-1 drilling operations commenced on September 26, 1996. A 30.48-cm (12.0-in.) surface

hole was drilled to a depth of 31.00 m (101.7 ft) bgs using a downhole percussion hammer and air

rotary reverse circulation drilling techniques. The 21.91-cm (8.625-in.) surface conductor casing was

then set and cemented in place using Type II neat cement with an additive of 2 percent calcium

chloride. An 20.32-cm (8.0-in.) hole was advanced below the surface conductor casing using

20.32 cm (8.0-in.) downhole percussion hammer and reverse circulation to a final depth of 409.34 m

(1,343.0 ft) bgs. Intermediate casing consisting of 13.97-cm (5.5-in.) carbon steel was installed in the

well upon completion of main hole drilling. Casing was set to a depth of 333.45 m (1,094.0 ft) and

suspended at that point from a landing clamp secured to the surface conductor casing. No centralizers

or cementing baskets were placed on the 13.97-cm (5.5-in.) casing string due to unstable borehole

conditions. Figure 4-9 illustrates the final subsurface well completion, and the surface completion of

HC-1 is presented on Figure 4-10.

4.6 Well HC-1 SamplingSamples for analytical analysis were collected from fluids and cuttings as specified in the Field

Instructions for Project Shoal Area Surface and Subsurface Investigation, Churchill County, Nevada

(IT, 1996) and the FMP for the Project Shoal Area Offsites Subproject (DOE/NV, 1996c). The

sample type and analytical results from these samples are shown in Tables 4-4 and 4-5.

WOB(psi)

Date Finished:1 0128/96

Date an:9/26/96

Air RPMPress(psi)

RotaryTorque

(psi)

WaterProduction

WaterInjection

(gpm)

Rate ofPenetration

(minlft)

Waterlevel

Depth Depth Strata Rock Lith(feet) (meters Unit

Surface Elevation:5309.21

IHole NO.:HC-1

o 100 120 120 2000 0 400 0 60 ·20000 5000

Logged By: Century GeophysicslDRI

Drilling Co.: Beylik Drilling Services

;Drilling Method: Air Rotaryl Reverse Circulatio


.....: 1"" ~ : + ···+····~····T····: :. .

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Figure 4-1Summary of Well HC-1 Drilling Parameters

OTV

vvvv

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600

500

200

800

400

700

900

300

100

260

3001000

320'

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3601200

380

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4-5

Shoal ProjectChurchill Co NevadaProject No. 764044.03.07.00.00IT Corporation Offsites ProjectLithologic Descriptions by Well

WEll ID. HC-l GRANITE 0.00 88.00 jaw 09/29/96Granite, mottled grayish white to white, porphyritic, abundant black togreenish b)ack biotite xl altering locally to chlorite also noted asirregular masses to 10 mm (10\), groundmass comprised of medium to coarsegrained clear to milky quartz, (30\), milky white kspar (40\) also noted asporphyritic xl up to 5mm 20\, minor plagioclase <10\

WEll ID. HC-l ANDESITE 88.00 90.00 jaw 09/29/96Andesite, light grayish green to greenish gray, weakly porphritic with thinlaths <1.5 mm plagioclase (10\), minor hornblende as thin tabular xIs in afine grained groundmass. Potential fracture zone. Large rubbly cuttings10-15mm

WEll ID. HC-l GRANITE 90.00 300.00 jaw 09/29/96Granite, mottled grayish white to white, porphyritic, abundant black togreenish black biotite xl altering locally to chlorite also noted asirregular masses to 10 mm (10\), groundmass comprised of medium to coarsegrained clear to milky quartz, (30\), milky white kspar (40\) also noted asporphyritic xl up to 5mm (20\), minor plagioclase «10\) Possible fractureor fractures within the interval 230-240. Pale yellow to ochreous orangestains along micro fractures and xl boundaries. Good quality cuttings 2-3mm

WEll ID. HC-l GRANITE 300.00 400.00 jaw 10/02/96Granite, mottled grayish white to white, porphyritic, abundant black togreenish black biotite xl altering locally to chlorite also noted asirregular masses or clots to 10 mm (10\), groundmass comprised of medium tocoarse grained clear to milky gray quartz, (30\), milky white kspar (40%)also noted as porphyritic xl up to 5mm (20\), minor plagioclase «10%)Possible fracture or fractures within the interval 320-330 and 360-370. Paleyellow to ochreous orange stains along micro fractures and xl boundaries.Good quality cuttings 2-3mm

WEll ID. HC-l GRANITE 400.00 460.00 jaw 10/02/96Granite, mottled grayish white to white, porphyritic, with abundant black togreenish black biotite xl altering locally to chlorite principally as 2-5mmi"regular aggregate masses or clots to 10 mm (10\), groundmass comprised ofmedium to coarse grained clear to milky gray quartz, (30\), milky white anhedsubhed kspar as microcline (40\) also noted as porphyritic xl up to 5mm(20%), minor plagioclase «10%) Fault/fracture or fracture zone within theinterval 400-450. Some cutting show slickensides and fracture cleavage Paleyellow to ochreous orange stains along micro fractures and as halossu"rounding clots and xl of chlorite boundaries. Large rubbly cuttingsranging lO-20mm.

WEll ID. HC-l GRANITE 460.00 510.00 jaw 10/02/96Granite, mottled grayish white to white, porphyritic, with abundant black togreenish black biotite xl altering locally to chlorite principally as 2-5mmirregular aggregate masses or clots to 10 mm (10%), groundmass comprised ofmedium to coarse grained clear to milky gray quartz, (30\), milky white anhedsubhed kspar as mlcrocline (40\) also noted as porphyritic xl up to 5mm(20%), minor plagioclase «10%) Fault/fracture or fracture zone within theintecval 400-450 Some cutting show slickensides and fracture cleavage.Pale yellow to ochreous orange stains along micro fractures and as halossurrounding clots and xl of chlorite boundaries. Good quality cuttings3-5mm.

WEll 1D. HC-l GRANITE 510.00 850.00 jaw 10/02/96Granite, mottled grayish white to white, porphyritic, with abundant black tog"ee~ish black biotite xl altering locally to chlorite principally as 2-5mmir"egula" aggregste masses or clots to 10 mm (10\), groundmass comprised ofmedium to coarse grained clear to milky gray quartz, (30\), milky white anhedsubhed kspar as microcline (40\) also noted as porphyritic xl up to 5mm(20%), minor plagioclase «10%) Very faint less prominant pale yellow toochreous orange stains along micro fractures and as halos surrounding clotsand xl of chlorite boundaries. Good quality cuttings 3-5mm. Fracture zone640-560 ?? large cuttings noted.

Figure 4-2Well HC-1 Lithologic Descriptions

(Page 1 of 2)

4-6

WEll ID. HC-l GRANITE 850.00 902.00 jaw 10/02/96Granite, mottled grayish white to white to light blue gray, interval isbleached and strongly choritized, some local silicification, porphyriticwith abundant chlorite after biotite, pervasive bluish green stained quartzand microcline. Fracture and micro fractures coated with stains and thincoatings of limoni~e. Rock is similar in composition to granite above yetaltered.

WEll ID. HC-l ANDESITE 902.00 923.00 jaw 10/02/96Andesite, dark grayish blue to dark gray, very fine grain to aphanitic, someunidentified dark phenocrysts « 1\) apparent. Cuttings (S-lSmm) aregenerally platey and have weak fracture/flow cleavage. Some strongly alteredgranitic cuttings 10-20 mm with strong hematite/limonite staining.Fault/fracture zone filled by an andesite dike.

WEll ID, HC-l GRANITE 923.00 1063.00 jaw 10/02/96Granite, mottled grayish white to white, porphyritic, with abundant black togreenish black biotite xl altering locally to chlorite principally as 2-Smmirregular aggregate masses or clots to 10 mm (10\), groundmass comprised ofmedium to coarse grained clear to milky gray quartz, (30\), milky white anhedsubhed kspar as microcline (40\) also noted as porphyritic xl up to Smm(20\), minor plagioclase «10\) Very faint less prominant pale yellow toochreous orange stains along micro fractures and as halos surrounding clotsand xl of chlorite boundaries. Poor quality cuttings 3-Smm with much crosscontaination with cuttings of uphole lithologies most predominated byandesite.

WEll ID. HC-l GRANITE 1063.00 1343.00 jaw 10/27/96Mixed lithologies of granite and andesite as described above. much crosscontamination from sloughing zones encountered above.


(Page 2 of 2)

4-7

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IDrilling Method: Air Rotary/ Reverse Circulation

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Figure 4-4 Pro'ect No. 764044.03.07.00.00

HC-1 Geophysical Log Traces of Spectra Gamma Ray4-9

Logged By: Century Geophysics/DRI


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Project No. 764044.03.07.00.00

HC-1 Geophysical Log Traces of Caliper, Resistivity, Neutron4-10

Loggeq By: Century GeophysicslDRI


Drillina Method: Air Rotarv/ Reverse Circulation

Hole No.:HC-1 iGeoloov and GeoonvsicatLog Summary Date Began:9/26/96

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Logged.By: Century Geophysics/DRI


Drillino Method: Air Rotarv/ Reverse Circulation

HC-1 Geophysical Log Traces of Caliper, Gamma Ray, Density4-11

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Date Began:9/26/96,'Hole NO.:HC-1

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IDrilling Co.: Beylik Drilling Services

IDrilling Method: Air Rotaryl Reverse Circulation

4-12

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IEastina:557360.40

o

IDate Beaan:9/26/96

IDate Finished:10/28/96

Tritium in Fluids(pCill)

BOO

....+ _----- ; ---- .

-. .. .--- ----- + ~ _._ -.- .

•

•-----_.

..................... ~;; , ..~~.. :.

~ ; i .

···T-·····························-t·········· __ ·__ ··· +._._ ~ .

.. ·· · ~ ..·..t ··· ·..· ·· · · " ..

•

.....~.

..... :·······························t······ , .

..............................._ .

.........~ .

................................: _-_. _.--..--.-.----. _.._. -: _ '" ----" -- - "';" -- ~ .

/' ;

~ t" .

..............................._ :.~

·······························t················~····· + .

......................................................

······························~·············~t········ .

..............................~ ~ , .

~ : ! ; ..

~ ;

l/ _ .

UIOLEII1 L ~~.:.~.._~=:: , : ; ..

400

300

200

100

Loggeq By: Century Geophysics/DRI


I Drilling Method: Air Rotary/ Reverse Circulation

IT CORPORATIONFigure 4-8 Project Shoal

HC-1 Tritium Concentrations During Drilling Proiect No. 764044.03.07.00.00

4-13

Hole NO.:HC-1 IGeology and Well Construction Summary

Surface Elevation:5309.21 INorthina:1621927.10 IEastinc557360.40

IDate Began:9/26/96

IDate Finished:1 0/28/96Depth Depth IStrata Rock I Lith Rock Waler Caliper(feet) (meters) II Unit I Type Level (inches)

o 20

Well Construction

u

20

40

60

80

100

120

140

160

1BO

200

220

240

260

2BO

30D

320

340

360

3BO

400

420

440

460

4BO

SOD

S20

540

560

SBO

600

620

640

660

6BO

700

720

740

760

7BO

BOOB20

B40

B60

BBO

90D

920

940

960

9BO

1000

1020

1D40

1060

1DBO

1100

1120

1140

1160

1180

1200

1220

1240

1260

1280

1300

1320



Drillina Method: Air Rotaryl Reverse Circulation

UIDlE

····:···T···~····: ···j····f··+·+··+····~::5..... " ~

::•••:•••',:[::••••L,~...............;.... ...~.... .;. .... ~.... ~ ····f···

..... ----..-.-.'p_._. -... ~-·-·t-... ~.... ~ ....~...: ::: :

····1····;-···_;···· --··i-···t····t·_--·-_··_~····

... "j'" -~- ---r'" ...·i·.. ··~-... ~....;....~....

••••••••• -- •• -P •••••••• ~•••• -=- ....: .... ~- .. -7 •• -

·········_········~····;:···~····:····:····~····I

--·-1····~···_~···

····j·····:-····r···· ····r-···:-_·· .-.- ----T---

:-----'-;!

:-.•"-'

f···+····.·····,····i--·,·····:·····;·····, ... :...

4-14

BOREHOLE 12" 0-101.7

CEMENT

CASING 8.625" 0 -101.7

CENTRALIZER 95.0 - 97.0

~ CASING 5.50" 0-1094.00-

r---- BOREHOLE 8.0" 101.7-1343.0

V FILL 1324.8-1343.0

++++++++++ . ++.+-::::..++++ + :~~~~+:::

IT CORPORATION

Well Coordinates(State Planar NAD 27)N: 1621981.797E: 557638.410

Clamp/ Landing Plate

Well Pad

1.22 m x 1.22 m x 0.15 m(48 in x 48 in x 6 in)Reinforced with a 152-cm x 15.2-cm(6 in x 6 in) wire mat

1.22 m

(48 in)

Protective Casing

3238-cm (12 3/4 in) od0.32-cm (.125 in) wall

Surface Casing

21.91-cm (8 5/8 in) od0.48-cm (.188 in) wall

Intermediate Casing

13.97-cm (5 1/2 in) od12.70-cm (5.0 in) id

Data Logger Access Tube

3.81-cm (1 1/2 in) conduit

Shelter for Data Logger

60.96-cm (24 in) diameter pad

Plan View

Lockable Lid

Concrete Pad


(5 1/2 in) od Threaded Coupling

Intermediate Casing with 13.97-cm

32.38-cm (12 3/4 in)od Protective Casing

Cap 13.97-cm (5 1/2 in) od Threaded

/?S\ ~E .soL{) L{)C") Nu:i

E .sor- 0

N ui~

Eo £;"': L{)

r-r--: u:i~

0 •E .~ :.o;; L{)

r-

'" ui0 •

." 1/\ 1}..\7\1'f'\l

Clamp/Landing Plate

Ground SurfaceElevation1618.25 m(5309.21 tt)

Figure 4-10HC-1 Well Head Completion Diagram

4-15

Table 4-1Well HC-1 Lithium Bromide Concentrations

(Page 1 of 3)

Date Time Depth Sample Conc. Sample Temp

mm/dd/yy (24 hrs) (ft) (mg/L) (Co) Sample Source Analysis By

9/29/96 2145 N/As 20.5 20.3 accs Standard A.M. Welcher9/29/96 2245 N/A 60.1 20.4 Water Truck A.M. Welcher9/29/96 2315 420 59.8 20.8 Discharge Line AM. Welcher9/29/96 2345 425 60.5 21.2 Discharge Line AM. Welcher9/29/96 0 N/A 19.9 19.7 accs Standard AM. Welcher9/30/96 30 N/A 54.3 20.6 Water Truck AM. Welcher9/30/96 100 N/A 20.5 19.5 accs Standard AM. Welcher9/30/96 45 445 60.5 21.1 Discharge Line AM. Welcher9/30/96 325 N/A 54.5 21.6 Water Truck AM. Welcher9/30/96 325 465 59.8 21.6 Discharge Line AM. Welcher9/30/96 425 N/A 57.5 21.1 Water Truck AM. Welcher9/30/96 425 485 47.0 21.1 Discharge Line AM. Welcher9/30/96 435 N/A 19.4 21.1 accs Standard AM. Welcher9/30/96 525 505 58.4 21.7 Discharge Line AM. Welcher9/30/96 615 510 56.6 22.0 Discharge Line J. Saavedra9/30/96 2220 N/A 20.6 21.9 accs Standard AM. Welcher9/30/96 1945 555 82.4 20.9 Discharge Line AM. Welcher9/30/96 2005 N/A 61.1 21.5 Water Truck M. Flaugher9/30/96 2040 N/A 59.3 22.3 Water Truck M. Flaugher9/30/96 2045 580 80.2 21.8 Discharge Line M. Flaugher9/30/96 2150 N/A 59.3 22.3 Water Truck M. Flaugher9/30/96 2241 N/A 25.7 21.4 accs Standard M. Flaugher9/30/96 2145 585 66.2 22.1 Discharge Line M. Flaugher9/30/96 2245 N/A 60.6 23.0 Water Truck M. Flaugher9/30/96 2245 610 79.9 21.4 Discharge Line AM. Welcher9/30/96 2345 N/A 8.8 23.0 Portable Water Tank AM. Welcher9/30796 2345 630 6.8 22.3 Discharge Line AM. Welcher9/30/96 2355 N/A 21.2 20.9 occs Standard AM. Welcher10/1/96 45 N/A 36.9 21.1 Water Truck AM. Welcher10/1/96 45 645 45.1 21.1 Discharge Line AM. Welcher10/1/96 145 N/A 34.9 20.9 Water Truck AM. Welcher10/1/96 145 660 48.1 21.0 Discharge Line AM. Welcher10/1/96 530 N/A 22.7 20.5 occs Standard AM. Welcher10/1/96 1203 N/A 20.5 20.8 accs Standard J.Wurtz10/1/96 1345 663 60.9 20.3 Discharge Line J. Saavedra10/1/96 1430 680 49.0 21.0 Discharge Line J. Saavedra10/1/96 1430 N/A 45.1 20.8 Water Truck J. Saavedra10/1/96 1515 700 48.5 20.4 Discharge Line J. Saavedra10/1/96 1515 N/A 49.6 20.2 Water Truck J. Saavedra10/1/96 1800 N/A 25.7 19.9 accs Standard J. Saavedra10/1/96 1615 N/A 53.2 20.0 Water Truck J. Saavedra10/1/96 1615 720 56.7 19.8 Discharge Line J. Saavedra10/1/96 1650 N/A 44.3 20.0 Water Truck J. Saavedra10/1/96 1650 723 47.5 20.2 Discharge Line J. Saavedra10/1/96 1735 N/A 53.7 20.2 Water Truck J. Saavedra10/1/96 1822 N/A 25.7 20.1 accs Standard J. Saavedra10/1/96 1735 740 30.3 21.2 Discharge Line J. Saavedra10/1/96 1830 N/A 37.2 19.9 Water Truck J. Saavedra10/1/96 1830 760 37.1 21.2 Discharge Line J. Saavedra10/1/96 1905 760 65.0 21.0 Discharge Line R. Peterson10/1/96 1925 N/A 21.6 21.1 accs Standard R. Peterson10/1/96 1920 760 69.5 20.6 Discharge Line R. Peterson10/1/96 2043 N/A 28.5 20.5 Water Truck R. Peterson10/1/96 2041 780 27.3 20.9 Discharge Line R. Peterson

4-16

Table 4-1Well HC-1 Lithium Bromide Concentrations

(Page 2 of 3)

Date Time Depth Sample Cone. Sample Temp

mm/dd/yy (24 hrs) (tt) (mg/L) (Co) Sample Source Analysis By10/1/96 2049 780 28.7 20.7 Discharge Line R. Peterson10/1/96 2130 780 31.3 21.2 Discharge Line R. Peterson10/1/96 2145 N/A 20.9 20.0 accs Standard R. Peterson10/1/96 2150 780 33.2 20.4 Discharge Line AM. Welcher10/1/96 2345 N/A 19.3 20.4 accs Standard AM. Welcher10/2/96 105 790 34.1 21.2 Discharge Line R. Peterson10/2/96 150 803 31.9 20.1 Water Truck R. Peterson10/2/96 135 800 37.0 21.4 Discharge Line R. Peterson10/2/96 245 N/A 23.3 20.6 accs Standard R. Peterson10/2/96 220 820 36.0 21.7 Discharge Line R. Peterson10/2/96 320 830 37.3 21.5 Discharge Line AM. Welcher10/2/96 420 845 32.6 21.2 Discharge Line AM. Welcher10/2/96 455 N/A 41.5 20.1 Water Truck AM. Welcher10/2/96 510 N/A 24.0 20.3 accs Standard AM. Welcher10/2/96 530 N/A 23.7 20.4 accs Standard A.M. Welcher10/2/96 520 N/A 38.2 20.6 Water Truck AM. Welcher10/2/96 520 865 32.6 22.1 Discharge Line AM. Welcher10/2/96 544 880 43.3 19.6 Water Truck R. Peterson10/2/96 610 895 36.9 21.2 Discharge Line R. Peterson10/2/96 610 N/A 34.9 21.3 Water Truck R. Peterson10/2/96 640 920 30.9 22.5 Discharge Line R. Peterson10/2/96 735 N/A 25.4 20.9 accs Standard R. Peterson10/2/96 800 940 40.4 19.2 Discharge Line J Saavedra10/2/96 800 N/A 40.2 19.1 Water Truck J Saavedra10/2/96 910 N/A 8.4 18.9 PT J Saavedra10/2/96 910 960 44.5 18.9 Discharge Line J Saavedra10/2/96 1025 N/A 22.7 19.0 accs Standard J Saavedra10/2/96 940 N/A 38.1 20.7 Water Truck J Saavedra10/2/96 1045 N/A 38.8 20.6 Water Truck J Saavedra10/2/96 1045 980 46.8 20.5 Discharge Line J Saavedra10/2/96 1356 N/A 20.0 21.4 accs Standard J Saavedra10/2/96 1150 N/A 26.3 22.2 Water Truck J Saavedra10/2/96 1150 1000 38.4 21.2 Discharge Line J Saavedra10/2/96 1245 N/A 31.7 22.0 Water Truck J Saavedra10/2/96 1245 1015 35.6 21.0 Discharge Line J Saavedra10/2/96 1345 N/A 43.8 21.8 Water Truck J Saavedra10/2/96 1422 N/A 26.3 21.2 accs Standard J Saavedra10/2/96 1345 1030 31.1 21.3 Discharge Line J Saavedra10/2/96 1445 N/A 26.7 21.8 Water Truck J Saavedra10/2/96 1445 1045 32.9 20.5 Discharge Line J Saavedra10/2/96 1615 N/A 27.4 21.6 PT J Saavedra10/2/96 1615 1050 31.9 20.4 Discharge Line J Saavedra10/2/96 1759 N/A 29.4 19.9 accs Standard J Saavedra10/2/96 1635 N/A 27.8 20.9 PT J Saavedra10/2/96 1635 1060 32.6 20.4 Discharge Line J Saavedra10/2/96 1800 1063 30.1 21.5 Discharge Line J Saavedra10/2/96 2245 N/A 20.5 20.6 accs Standard R. Peterson10/2/96 1950 Purge at 106 31.7 19.8 Discharge Line R. Peterson10/2/96 2035 Purge at 106 30.1 20.7 Discharge Line R. Peterson

10/2/96 2130 Purge at 106 NDb Lead N/A Discharge Line R. Peterson10/2/96 2145 Purge at 106 ND Lead N/A Discharge Line R. Peterson10/2/96 2125 N/A 20.0 21.9 Water Truck R. Peterson10/2/96 2135 N/A 18.2 20.9 accs Standard R. Peterson10/2/96 2215 Purge at 106 24.1 22.6 Discharge Line R. Peterson

4-17

I

Table 4-1Well HC-1 lithium Bromide Concentrations

(Page 3 of 3)


mm/dd/yy (24 hrs) (ft) (mg/L) (Co) Sample Source Analysis By1012/96 2315 Purge at 106 20.4 22.7 Discharge Line R. Peterson10/3/96 15 Purge at 106 21.0 24.6 Discharge Line R. Peterson10/3/96 30 Purge at 106 22.3 21.3 Discharge Line R. Peterson10/3/96 30 Purge at 106 21.1 21.7 Discharge Line R. Peterson10/3/96 45 N/A 18.0 22.1 accs Standard R. Peterson10/3/96 2055 N/A 30.3 20.0 Water Truck R. Peterson10/3/96 2350 N/A 25.1 19.5 Discharge Line w/Foam R. Peterson10/4/96 45 N/A 23.3 19.3 Discharge Line w/Foam R. Peterson10/4/96 105 N/A 23.0 20.5 Discharge Line w/Foam R. Peterson10/4/96 120 N/A 25.2 20.2 Discharge Line R. Peterson10/4/96 135 N/A 25.7 20.6 Discharge Line R. Peterson10/4/96 150 N/A 21.1 20.7 accs Standard R. Peterson10/4/96 205 N/A 32.9 18.5 Water Truck R. Peterson10/4/96 205 N/A 25.7 20.7 Discharge Line R. Peterson10/4/96 215 N/A 18.4 24.4 accs Standard R. Peterson10/4/96 230 N/A 20.7 29.1 Discharge Line R. Peterson10/4/96 245 N/A 27.7 20.2 Discharge Line R. Peterson10/4/96 255 N/A 26.9 20.4 Discharge Line R. Peterson10/4/96 305 N/A 25.4 21.1 Discharge Line R. Peterson

10/4/96 330 N/A 15.3(23.2)c 29.1(20.7)c accs Standard R. Peterson10/4/96 523 N/A 25.8 19.4 Discharge Line R. Peterson

10/26/96 940 N/A 20.3 25.3 accs Standard P.Galio10/26/96 1000 N/A 37.0 25.1 Water Truck P.Galio10/26/96 1000 1075 37.6 25.1 Discharge Line P.Galio10/26/96 1030 N/A 29.3 25.0 Water Truck P.Galio10/26/96 1030 1095 32.6 25.2 Discharge Line P.Galio10/27/96 1207 N/A 19.8 25.1 accs Standard M. Flaugher10/27/96 1505 N/A 38.6 24.6 Water Truck R. Peterson10/27/96 1500 1123 38.1 25.1 Discharge Line R. Peterson10/27/96 1600 N/A 39.1 24.7 Water Truck R. Peterson10/27/96 1600 1155 29.5 25.0 Discharge Line R. Peterson10/27/96 1700 1203 36.1 24.8 Discharge Line R. Peterson10/27/96 2305 N/A 21.3 25.0 accs Standard R. Peterson10/27/96 1800 1223 43.3 24.8 Discharge Line R. Peterson10/27/96 1800 1223 N/D LEAD Discharge Line R. Peterson10/27/96 1830 1230 39.4 24.8 Discharge Line R. Peterson10/27/96 1920 1250 28.9 24.9 Discharge Line R. Peterson10/27/96 1955 1270 29.4 25.0 Discharge Line R. Peterson10/27/96 2340 N/A 20.8 25.0 accs Standard R. Peterson10/27/96 2025 1290 29.7 24.8 Discharge Line R. Peterson10/27/96 2100 1310 17.8 25.0 Discharge Line R. Peterson10/27/96 2125 1330 10.7 25.0 Discharge Line R. Peterson10/27/96 2150 N/A 38.5 25.0 Water Truck R. Peterson10/27/96 2250 1343 5.68 25.0 Discharge Line R. Peterson10/27/96 2400 N/A 20.9 24.5 accs Standard R. Peterson10/28/96 1200 N/A 20.3 24.2 accs Standard R. Peterson10/28/96 1200 1343 2.71 24.4 Discharge Line R. Peterson

'Not Applicable

"lndtcates non-detect for lead.

"samoie was analyzed a second time at the temperature of 20.7 "C and the concentration was 23.2 mg/L.

4-18

I

Table 4-2Well HC-1 Water Level Measurements

Well Name Date Depth to Elevation NotesFluid (ft) (ft)

HC-1 01-0ct-96 717.14 4592.07 Water level from depth to water check with drill pipe. Depth of well at this point is 783.0 ft.

HC-1 05-0ct-96 942 4367.21 Fluid level obtained from Century geophysics neutron log.

HC-1 08-0ct-96 920 4389.21 Fluid level DRI with tape. Accuracy not considered good.

HC-1 09-0ct-96 956 4353.21 Water level determined to top of casinq usinq DRI down hole video camera.

HC-1 14-0ct-96 959.1 4350.11 Fluid level determined from DRI transducer installed well.

HC-1 15-0ct-96 962 4347.21 Fluid level determined via DRI transducer in well. Measured to qround level (GL).

HC-1 16-0ct-96 964.72 4344.49 Depth to water obtained from DRI tranducer set in well. Measured to GL.

HC-1 21-0ct-96 975.99 4333.22 DRI transducer readlnq to top of conductor caslnq, approx. 1 ft above GL. Value adjusted to GL.

HC-1 22-0ct-96 977.11 4332.1 DRI transducer readinq adiusted for qround level.

HC-1 23-0ct-96 978.91 4330.3 DRI transducer readinq. Measured to top of conductor caslnq, at 1 ft above GL.

HC-1 29-0ct-96 1081.71 4227.5 Water level obtained bv IT Corp. usinq solinist tape.

HC-1 01-Nov-96 1079 4230.21 DRI water level obtained from top of surface casino, stick-up aoorox, 1 ft. Value adlusted to GL.HC-1 13-Nov-96 1078 4231.21 Water level approx. obtained from the DRI down hole video camera measured to GL.

~I

No

Table 4·3Well HC-1 List of Geophysical Logs

Well Name Geophysical Date Log Top Log Bottom Logging

Log Logged (tt) (tt) Company

HC-1 3-Arm Caliper 10/5/96 0.00 902.70 Century Geophysical


HC-1 3-Arm Caliper 9/9/96 915.00 1028.00 DRI

HC-1 Density/Resistivity/Neutron/Neutron Porosity 10/5/96 0.00 1030.90 Century Geophysical


HC-1 Deviation - magnetic 10/6/96 0.10 1028.70 Century Geophysical

HC-1 Deviation - gyroscopic 11/7/96 0.60 1326.00 Century Geophysical

HC-1 Spectra Gamma Ray (K, U, Th) 10/5/96 1.90 1028.50 Century Geophysical


HC-1 Temperature 10/5/96 625.50 1029.30 Century Geophysical

HC-1 Temperature 11/6/96 915.90 1324.60 Century GeophysicalHC-1 Acoustic Borehole Televiewer 11/6/96 1099.24 1324.25 Century GeophysicalHC-1 Chemtool 11/14/96 1082.00 1327.00 DRIHC-1 Downhole Video Camera 10/4/96 0.00 889.00 DRI

Note: Calibrations and repeat sections were performed per contract specifications.

~I

tv......

Table 4-4HC-1 Summary of Subsurface Investigation Samples

Date COCSample Number

CollectedLocation Sample Type Depth (ft)

Numbera Comments

PSCOOO01 10/2/96 HC-1 Cuttings 930 519811 Cuttings sample collected at HC-1 during drilling.

PSWOOO03 10/4/96 HC-1 Groundwater 920 519812 Groundwater sample from HC-1 Well Development...Full Lab QC

PSWOOO04 10/4/96 HC-1 Groundwater (dup) 920 519812 Duplicate of sample PSWOOO03PSWOOO05 10/4/96 HC-1 Water (QC) NA 519812 Equipment Rinsate samplePSWOOO06 10/4/96 HC-1 Water (QC) NA 519812 Field Blank samplePSFOOO01 10/5/96 HC-1 Discharge Fluid NA 519816 Composite sample collected at HC-1 Sump #1PCXOOO01 11/3/96 HC-1 2nd Discharge Fluid NA 519820 Additional fluids discharged into HC-1 Sump#1, 2ndcomposite samplecollected.PSCOOO02 10/16/96 HC-2 Cuttings 1253 519813 Cuttings sample from HC-2 taken during drilling.PSWOOO07 10/21/96 HC-2 Groundwater 1173 519814 Groundwater sample from HC-2 Well Development.PSFOOO03 10/20/96 HC-2 Discharge Fluid NA 522037 Composite sample collected at HC-2 Sump #1.PSCOOO03 11/5/96 HC-3 Cuttings 1255 519822 Cuttings sample from HC-3 taken during drilling.PSWOOO08 11/14/96 HC-3 Groundwater 1104 519823 Groundwater sample from HC-3 Well Develop. Waiting on results.PSFOOO05 11/12/96 HC-3 Discharge Fluid NA 519824 Composite sample collected at HC-3, Sump #1.PSCOOO04 10/23/96 HC-4 Cuttings 1250 519817 Cuttings sample collected at HC-4 during drilling.PSWOOO09 11/7/96 HC-4 Groundwater 1130 519819 Groundwater sample from HC-4 using a discrete bailer.

PSFOOO07 10/24/96 HC-4 Discharge Fluid NA 519818 Composite sample collected at HC-4, Sump #1

·Chain of Custody

~I

NN

Tables 4-5a to 4-5eHC-1 Sample Results

(Page 1 of 3)

Table 4-5a

Sample Sample Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium ChromiumLocation Sample # Date Matrix (mg/L)a (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-1 PSCOOO01 10/2/96 Cuttings N/Ab N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO03 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO04 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSFOOO01 10/5/96 Sump 1.19 0.0272 (NO)c 0.0086 0.0526 0.0004 0.408 0.003 (NO) 38.5 0.0044 (NO)HC-1 PSXOOO01 11/3/96 Sump N/A N/A 0.0026 0.16 N/A N/A 0.0006 (NO) N/A 0.011

HC-1 PSWOOO05 10/4/96 Water (QC) N/A N/A NOd NO N/A N/A ND N/A NOHC-1 PSWOOO06 10/4/96 Water (QC) N/A N/A N/A NO N/A N/A N/A N/A NO

Table 4-5b

Sample Sample Cobalt Copper Iron Lead Lithium agnesiu Manganese Mercury MolybdenumLocation Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-1 PSCOOO01 10/2/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO03 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO04 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSFOOO01 10/5/96 Sump 0.003 (NO) 0.01 2.01 0.0013 1.8 4.92 0.154 0.0001 (NO) 0.0199HC-1 PSXOOO01 11/3/96 Sump N/A N/A N/A 0.0046 N/A N/A N/A 0.0001 (NO) N/AHC-1 PSWOOO05 10/4/96 Water (QC) N/A N/A N/A NO N/A N/A N/A NO N/AHC-1 PSWOOO06 10/4/96 Water (QC) N/A N/A N/A N/A N/A N/A N/A N/A N/A


bNot Analyzed

cReported value is below detection limit.

dNot detected

"Unjts in PicoCuries per liter (pCi/L) unless otherwise noted

fPicoCurie per gram

~Itvw


(Page 2 of 3)

Table 4-5c

Sample Sample Nickel Potassium Selenium Silicon Silver Sodium Strontium ThalliumLocation Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-1 PSCOOO01 10/2/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO03 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSWOOO04 10/4/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/AHC-1 PSFOOO01 10/5/96 Sump 0.0134 (NO) 8.23 0.004 17.9 0.0066 (NO) 56.2 0.466 0.0035 (NO)HC-1 PSXOOO01 11/3/96 Sump N/A N/A 0.0043 N/A 0.0015 (NO) N/A N/A N/AHC-1 PSWOOO05 10/4/96 Water (QC) N/A N/A NO N/A NO N/A N/A N/AHC-1 PSWOOO06 10/4/96 Water (QC) N/A N/A N/A N/A N/A N/A N/A N/A

Table 4-5d

Sample Sample Uranium Vanadium Zinc Tritium Gross Alpha Gross Beta Bismuth-214 Cesium-137Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (pCi/L)e (pCi/L) (pC ilL) (pCi/L) (pC ilL)

HC-1 PSCOOO01 10/2/96 Cuttings N/A N/A N/A N/A N/A N/A NO pCi/gf0.14 pCi/g (NO)

HC-1 PSWOOO03 10/4/96 Groundwater N/A N/A N/A -3 43.9 24.6 NO 3.89 (NO)HC-1 PSWOOO04 10/4/96 Groundwater N/A N/A N/A 8 36.4 18.3 NO 7.58 (NO)HC-1 PSFOOO01 10/5/96 Sump 0.127 (NO) 0.0031 (ND) 0.033 22 4.5 9.64 NO NOHC-1 PSXOOO01 11/3/96 Sump N/A N/A N/A -2 14.2 8.11 NO NOHC-1 PSWOOO05 10/4/96 Water (QC) N/A N/A N/A 21 1.62 0.91 NO 5.15 (NO)HC-1 PSWOOO06 10/4/96 Water (QC) N/A N/A N/A 27 0.43 0.06 NO 4.35 (NO)

"Milligram(s) per liter

bNot Analyzed

CReported value is below detection limit.

dNot detected

·Units in PicoCuries per liter (pCilL) unless otherwise noted

fPicoCurie per gram


(Page 3 of 3)

Table 4-5e

Sample Sample Lead-212 Potassium-40 Thallium-208Location Sample # Date Matrix (pCi/L) (pCi/L) (pCi/L)

HC-1 PSCOOO01 10/2/96 Cuttings 0.26 pCi/g 28.9 pCi/g NO pCi/gHC-1 PSWOOO03 10/4/96 Groundwater NO 107 NOHC-1 PSWOOO04 10/4/96 Groundwater NO 153 NOHC-1 PSFOOO01 10/5/96 Sump NO NO NOHC-1 PSXOOO01 11/3/96 Sump NO NO NOHC-1 PSWOOO05 10/4/96 Water (QC) NO NO NOHC-1 PSWOOO06 10/4/96 Water (QC) NO NO NO


bNot Analyzed

'Reported value is below detection limit.

dNot detected

'Uruts in PicoCuries per liter (pCi/L) unless otherwise noted

fPicoCurie per gram

5-1


Well HC-2 was drilled to a depth of 397.15 m (1,303.0 ft) between October 5, 1996, and

October 15, 1996. A total of eight days was spent drilling and completing installation of this well.

Note that Figures 5-1 through 5-10 and Tables 5-1 through 5-5, cited in the following text, are

located at the end of this section.



equipment was subjected to a radiological screening prior to movement to the drill site.

A 30.48-cm (12.0-in.) surface conductor casing hole was drilled using air rotary reverse

circulation and a downhole percussion hammer to a depth of approximately 13.72 m (45.0 ft).

Due to its deviated condition, this hole was abandoned and cemented to the surface. A second

30.48-cm (12.0-in.) conductor hole was drilled approximately 3.05 m (10.0 ft) east of the first

location and successfully completed to a depth of 31.0 m (101.7 ft) bgs. A 21.91-cm (8.625-in.)

conductor casing was installed within the hole and cemented with Type II cement with 2 percent

calcium chloride additive from the TD of the hole to the ground surface.

The main hole was drilled to a depth of approximately 76.20 m (250.0 ft) bgs using a 20.32-cm

(8.0-in.) downhole percussion hammer assembly and air rotary reverse circulation drilling

techniques. Upon initial drilling of the main hole, the drilling subcontractor, Belik Drilling,

developed problems with the rig-mounted air compressor. Operations were suspended for

approximately one day to repair the air compressor. Repairs to the primary rig compressor could

not be completed, and a portable compressor was delivered to the site to supply air for drilling.

This compressor developed a severe oil leak after several hours of operation, and site operations

were again suspended for a period of five days between October 9, 1996, and October 14, 1996,

to allow for repair of the air compressors and other malfunctioning equipment associated with the

drilling.

On October 14, 1996, drilling operations resumed on the HC-2 drill site. Drilling proceeded at a

steady rate to a TD of 397.15 m (1,303.0 ft) bgs. Figure 5-1 provides a summary of drilling

parameters for the well. All figures and tables cited in the text are located at the end of this

section.

5-2

Well development using reverse circulation techniques was conducted on October 16, 1996,

following the drilling of the well. Upon completion of well development, drill pipe was pulled

from the well to allow for geophysical logging operations. The geophysical logging

subcontractor, Century Geophysical, was unable to reach the TD of the well due to an obstruction

in the borehole at a depth of 267.61 m (878.0 ft) bgs. The 20.32-cm (8.0-in.) drilling assembly

with a tricone button bit was tripped back in the hole to clear the obstruction and to clean the hole

to the TD of the well. Unstable, sloughing borehole conditions resulted in obstructions occurring

at depths of 231.65, 319.43, and 347.47 m (760.0, 1,048.0, and 1,140.0 ft) bgs. Two separate

attempts were required to clear and clean the borehole in preparation for geophysical logging.

Prior to logging, a sinker bar was run into the hole to establish whether any blockages had

developed. The sinker bar was unable to pass below a depth of 268.22 m (880.0 ft) bgs. It was

determined that geophysical logging of the available open borehole should be conducted. Century

Geophysical and DRI completed the logging of the well to the obstructed depth of 268.22 m

(880.0 ft) on October 18, 1996.

Intermediate (13.97-cm [5.5-in.]) casing was installed in the well to a depth of 291.69 m (957 ft)

bgs upon completion of geophysical logging operations. The intermediate casing needed to be

drilled down through obstructed portions of the borehole at approximately 268.22 m (880.0 ft).

The hole was then reentered using reverse circulation drilling techniques and an 11.75-cm

(4.625-in.) tricone bit to clean out the obstructed borehole below the final casing point. The hole

was cleaned and conditioned to a depth of 396.24 m (1,300.0 ft), at which point the drill pipe was

pulled from the hole in preparation for geophysical logging operations.

Geophysical logging was then conducted to a depth of 373.08 m (1,224.0 ft) bgs, at which point

the borehole was once again obstructed. The water level in the well at this time was noted at

343.77 m (1,127.85 ft) bgs. It was then determined by DRI that the well provided an interval of

36.57 m (120 ft) between 336.16 to 372.77 m (1,102.9 to 1,223.0 ft) of open borehole within the

saturated zone, which was determined to be sufficient to facilitate the planned scientific studies.

5.1 Well HC-2 GeologyWell HC-2 encountered principally a fractured, coarse-grained, biotite granite of Cretaceous age

throughout the drilled interval. An intrusive aplite dike was noted in the interval between 137.16

and 152.40 m (450 and 500 ft). Significant fault/fracture zones were apparent in the approximate

intervals between 134.11 to 152.40 m (440.0 to 500.0 ft), 176.78 to 192.02 m (580.0 to 630.0 ft),

252.98 to 257.56 m (830.0 to 845.0 ft), and 335.28 to 341.38 m (1,100.0 to 1,120.0 ft). A

detailed description of the lithologies encountered in the well is provided in Figure 5-2.

5-3

5.2 Well HC-2 Hydrology Several elements of hydrologic importance were monitored during and after the completion of the

well. During drilling operations, two monitoring parameters were consistently compared:

the volume of drilling fluids (water) injected to facilitate drilling and the recorded volumes of fluid

produced as discharge to the surface during the same time. Figure 5-3 illustrates the relationships

between injected drilling fluids and drilling fluid produced at the surface. In addition to these

volumetric measurements, all drilling fluids injected into the borehole were tagged with a tracer

solution of Lithium Bromide (LiBr). The concentration of this solution was monitored on a

regular basis to estimate groundwater production within the borehole. Table 5-1 illustrates LiBr

concentrations noted in produced fluids.


suggests the well was capable of producing approximately 0.75 to 1.0 gpm (2.8 to 3.8 L/min).

During several instances, the well was capable of intermittent production on the order of 3.0 to

5.0 gpm (11.4 to 18.9 L/min). These readings suggest production from perched water zones

along fault or fracture zones. These zones were of limited impact as their storage capacity was

exhausted, and their contribution to the well decreased.




5.3 Well HC-2 Geophysical SurveysA suite of downhole geophysical surveys was run within the borehole upon completion of drilling

to the TD of 397.15 m (1,303.0 ft) after a phase of well development. Due to unstable borehole

conditions, geophysical logging was conducted in two separate phases. The first phase consisted

of logging by both Century and DRI to a depth of approximately 259.08 m (850.0 ft) bgs. Upon

completion of these logging runs, intermediate casing was installed in the well to a depth of

291.69 m (957.0 ft) bgs. After casing installation, the well was logged from a point below the

casing to the well’s accessible total depth of 373.08 m (1,224.0 ft) bgs. The portion of the

borehole from 259.08 to 291.69 m (850.0 to 957.0 ft) was not logged due to obstruction of the

borehole at 259.08 m (850.0 ft) and to the installation of intermediate casing to a depth of

291.69 m (850.0 ft) bgs.

Deviation surveys conducted within the casing and borehole indicate the borehole is deviated

2.7 degrees from vertical in a north-northeast direction. The deviation of the hole placed the

5-4

bottom of the hole 4.88 m (16.0 ft) north-northeast of the collar and resulted in a true vertical

depth of 369.97 m (1,213.81 ft) bgs.

Table 5-3 provides a summary of the geophysical logs run for the well. Additional specialized

logging was performed by DRI as part of their scientific work scope. Figures 5-4 to 5-7 provide

condensed illustrations of log traces for well HC-2.


SSHASP (DOE/NV, 1996b) and the FMP for the Project Shoal Area Offsite Subproject

(DOE/NV, 1996c). Regular radiological monitoring of discharged drilling effluents, including

both fluids and solids, was conducted by Bechtel Nevada radiation control technicians. Samples

for further analysis were screened using handheld instruments at the time of collection. Effluents

were then further analyzed for tritium and other radionuculides using on-site laboratory

monitoring equipment. Tritium activities from fluid and swiped samples were recorded using a

Packard Liquid Scintillation instrument. Other radionuculides were analyzed using Canberra

gamma spectroscopy instrumentation.

Well HC-2 effluents were found to contain only natural background levels of tritium and other

radionuculides based on results of field monitoring. Figure 5-8 is a profile of tritium encountered

in fluids produced from the well.

5.5 Well HC-2 Well ConstructionFinal construction of Well HC-2 included the drilling of a 30.48-cm (12.0-in.) surface borehole to

a depth of 31.39 m (103 ft). Conductor casing comprised of 21.91-cm (8.625-in.) carbon steel

was installed in the 30.48-cm (12.0-in.) hole. Bow type centralizers were placed approximately

1.52 m (5.0 ft) from the bottom of the casing. Conductor casing was cemented to the surface

using Type II cement with 2 percent calcium chloride as an additive. An 30.32-cm (8.0-in.)

borehole was drilled to a TD of 397.15 m (1,303.0 ft) bgs beneath the conductor casing.

Intermediate, 13.97-cm (5.50-in.) carbon steel casing was installed in the completed borehole and

set at a depth of 291.08 m (955.0 ft) bgs. Intermediate casing was installed without centralizers

or cement baskets due to adverse borehole conditions; casing was then suspended on landing

straps secured to the surface conductor casing. Figure 5-9 provides a schematic view of the final

completion. The surface completion for the well head is illustrated in Figure 5-10.

5-5

5.6 Well HC-2 SamplingSamples for analytical analysis were collected from fluids and cuttings as specified in the

Field Instructions for Project Shoal Area Surface and Subsurface Investigation, Churchill

County, Nevada (IT, 1996) and the FMP for the Project Shoal Area Offsites Subproject

(DOE/NV, 1996c). The sample type and analytical results of these samples are shown in

Tables 5-4 and 5-5.

I!Logged By: Century Geophysics/DRI

:Drilling Co.: Beylik Drilling Services

~Drilling Method: Air Rotary/ Reverse Circulation

WOB(psi)

60 -20000 5000


4000


!Date Began:10/6/96

Air RPMPress(psi)

RotaryTorque

(psi)

20000

Water WaterInjection Production

(gpm) 12 0 1210100

Rate ofPenetration

(mlnlft)

o


5-6 --'--'-.=:.=.=-:..:..::..:....:...::....:.=...:...::.:..::..::-='-.:..::.::.:.=..::.._-

GRANITE

lithDepth ! Depth ! Strata Rock(feet) I(meters!! Unit

I i

I

iHole No.:HC-2

ISurface Elevation:5347.12


WEll ID. HC-2 GRANITE 0.00 30.00 jaw 10/08/96Granite. mottled grayish white to yellowish white, porphyritic, abundantblack to greenish black biotite xl altering locally to chlorite also notedas irregular masses to 10 mm (10%), groundmass comprised of medium·to coarsegrained clear to milky quartz, (30%), milky white kspar (40%) also noted asporphyritic xl up to 5mm (20%), minor plagioclase «10%)

WEll ID. HC-2 GRANITE 30.00 60.00 jaw 10/08/96Granite, bleached grayish white to mottled yellowish white, porphyritic,abundant black to greenish black biotite xl altering locally to chloritealso noted as irregular masses to 10 mm (10%), groundmass comprised ofmedium to coarse grained clear to milky quartz, (30%), milky white kspar(40%) also noted as porphyritic xl up to 5mm (20%), minor plagioclase«10%). Abundant limonite staining and weak coating on fracture surfaces.Fracture zone and rubbly cuttings noted in the interval 30-60 ft. Minorwater production noted in the same interval. Good cuttings quality2.0-3.5mm, large cuttings 20-30 mm within the fractured interval.

WEll ID. HC-2 GRANITE 60.00 200.00 jaw 10/14/96Granite, mottled grayish white to yellowish white, porphyritic, abundantblack to greenish black biotite xl altering locally to chlorite also notedas irregular masses to 10 mm (10%), groundmass comprised of medium to coarsegrained clear to milky quartz, (30%), milky white kspar (40%) also noted asporphyritic xl up to 5mm (20%), minor plagioclase «10%)

WEll ID. HC-2 GRANITE 200.00 310.00 jaw 10/14/96Granite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite xl altering locally to chlorite also notedas irregular masses to 10 mm (10%), groundmass comprised of medium to coarsegrained clear to milky quartz, (30%), milky white kspar (40%) also noted asporphyritic xl up to 5mm (20%), minor plagioclase «10%) Spotty fracturestains of ocherous yellow orange limonite through out interval

WEll ID. HC-2 GRANITE 310.00 450.00 jaw 10/14/96Granite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite xl altering locally to chlorite also notedas irregular masses to 10 mm (10%), groundmass comprised of medium to coarsegrained clear to milky quartz, (30%), milky white kspar (40%) also noted asporphyritic xl up to 5mm (20%), minor plagioclase «10%) Spotty fracturestains of ocherous yellow orange limonite through out interval

WEll ID. HC-2 APLITE 450.00 500.00 jaw 10/14/96Aplite, grayish white to milky grayish white, abundant quartz 85% astranslucent to partly clear anhed xls, microcline (15%) as cleaved xlsMinor black to dark green biotite as <1.0 mm subhed xls, possibly asresidual cross contamination from other interval encountered above.

WEll ID. HC-2 GRANITE 500.00 650.00 jaw 10/15/96Granite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite xl altering locally to chlorite also notedas irregular masses to 5 mm (10%) apparently related to thin irregularschlerien type flowage features, groundmass comprised of medium to coarsegrained clear to milky quartz, (30%), milky white kspar (40%) also noted asporphyritic xl up to 5mm (20%), minor plagioclase «10%). Accessorymagnetite and some specularite noted <1%. Locally spotty fracture stains ofocherous yellow orange limonite through out interval

WEll ID. HC-2 GRANITE 650.00 880.00 jaw 10/15/96Granite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite subhed -euhed xl(1.0-2.0 mm) alteringlocally to chlorite also noted as irregular masses to 5 mm (10%), groundmasscomprised of medium to coarse grained clear to milky quartz, (30%) I milkywhite kspar (40%) also noted as porphyritic xl up to 5mm (20%), minorplagioclase «10%) Some accessory magnetite and specularite <1% noted.Locally spotty fracture stains of ocherous yellow orange limonite throughout interval. Possible fracture zone 740-750 ft.


(Page 1 of 2)

5-7

WEll ID. HC-2 GRANITE 880.00 1023.00 jaw 10/15/96Granite. mottled grayish green white to buff light grayish green to mediumgray green, porphyritic, abundant black to greenish black biotite subhed-euhed xlI1.0-2.0 mm) much a Lt e r-e d locally to chlorite also noted aslrregular masses to 5 mm 110%) ,apparent schlerien flowage as streaky massesof very fine grained chlo:,-ite with mino:,- biotite as platy to lens likecuttings, groundmass comprised of medium to coarse grained clear to milkyquartz, 130%), milky white kspar (40%) also noted as porphyritic xl up to 5mm(20%), minor plagioclase «10%) Accessory magnetite and specularite < 1%noted. Locally spotty fracture stains of ocherous yellow orange limonitethrough out interval. Possible schlerien/fracture zones 900-930, 960-990 ft.Cuttings quality is generally good 1.0-4.0 mm and noticably larger 10.0-15.0mm in noted fracture zones.

WEll ID. HC-2 GRANITE 1023.00 1303.00 jaw 10/15/96Granlte, mottled grayish green white to buff light grayish green to mediumgray green, porphyritic, abundant black to greenish black biotite subhed-euhed xl(1.0-2.0 mm) much altered locally to chlorite also noted asirregular masses to 5 mm (10%) ,apparent schlerien flowage as streaky massesof very fine grained chlorite with minor biotite as platy to lens likecuttings, groundmass comprised of medium to coarse grained clear to milkyquartz, (30%), milky white kspar (40%) also noted as porphyritic xl up to 5mm(20%), minor plagioclase 1<10%) Accessory magnetite and specularite < 1%noted. Locally very spotty fracture stains of ocherous yellow orangelimonite noted in isolated 10 ft. intervals. Possible schlerien/fracturezones 1090-1100, 1120-1130, 1140-1160 ft. Cuttings quality is generally good1.0-4.0 mm and noticably larger 10.0-15.0 mm in noted fracture zones.


(Page 2 of 2)

5-8

IGeology and Water ProductionSummaryIHoleNo ·HC·2

'Surface Elevation:5347.12

!Depth

IDepth i Strata

IRock

(feet) (meters)I

Unit

I

, III I

Northing:162020B.30I lithology , RockI I Type

I

WaterLevel

o

IEasting:555447.BOWater Injection Rate

(gpm)

IDate Finished: 10/20/96Water Production Rate

(gpm)

15

:=--10.0

11S···········

'B.e',~B.O

:~

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•

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··············_·····~t·······:········~·····

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gg

'Y-.. (9.0f···············:··············-"~.=-<··8cl}· .,.. , , -5,Qc:.:··············,···············:··············~1wt::?:7.0

6:0f··············;··········~·:z-::.ci-6·G-

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f ; ~.•......""l=·6.0... {.fQ..B..O, _..1.6.5 1 7.0 :

f··············;·····<..;.?"'-i·5:/·0.....~t8...........

f···············:·······~~·5.5,S .... ·····c···~ ~.

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......,~tR - f , '$"':[G.:~B..O: .

GRANITE

.- APL.iii····-

v v v v "'GRANiTE-vvvvvvvvvvvvvvvvv

~:v:v:v:vvvvvvvvvv

~v v v vvvvvvvv

:::::::1vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

vv"'vV",VIvvvvvvvvvvvvvvvvvvvvvvvvvvvv

r~v:v:v:vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

f~~~~~~~,vVvvvvv~vvvvvvvvvv

~:~:~:]vvv~

:v:v:vv~vvvvvvvvvv

400

BOO

700

500

900

600

300

200

100

1000

1100

1200

Figure 5-3

Loggeq By: CenturyGeophysics/DRI IT CORPORATION

IDrilling Co.: BeylikDrilling Services Project Shoal

Drilling Method: Air Rotaryl Reverse Circulation _P'-'-'r0:Lj·4e::cct=.:..:.N.;.;o:..:....:7...:64'---'-=-044...:....:.;.c.::0c.::3.:..;.O:..:7..:..0::c0:..:.-=-OO-=---_.....J


Hole NO.:HC-2

Surface Elevalion:5347.12Depth I Depth : Strata Rock(feel) tmelers) Unit

I :, I

-;20 140 -i60 -j80.J

100 ~120 1140 1160 j180 -i200 1

220 ~240 .:

260 -j280 ~300 --:

320 ~340-j360 1380 -i400 j420 ~

440"';

460 jJ480 -I

l500 -j

520 -i540~560 j

580.J

600 -j620 1640 -]

660--1

680 -i700 ~

720~740 j760 -i

-;

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800 ~.,820 1840 1860 --;

880 -.:J-;900 1920 1940-1

960 -j980 "j

1000 --11020 -j1040-]

1060--1

1080 j1100 -i1120 -j1140 --11160 -j1180 -i1200 ~1220 11240 11260 -11280 -j

F UID lE L


(cps)1~

iLogge\! By: Century Geophysics/DRI IT CORPORATIONII Drilling Co.: Beylik Drilling Services • Project Shoal

.Drilling Method: Air Rotary/ Reverse Circulation Figure 5-4 Project No. 764044.03.07.00.00


I

(

5=s- J) ..

)

iGeoloov and Geoohvsicat Log Summary i

2000~

.

<


Date BeQan:10/6/96

I Neutron: (cps)

50010

v

Resistivity(ohmlm)

200

IEastino:555447.80

-:-

Caliper(inches)

o

Rock ! Water IType ' Level

I Northing: 1620208.30

! Hole NO.:HC-2

iSurface Elevation:5347.12i Depth i Depth : Strata I Rock lithology

(feet) Kmetersl Unit I I

I I I I I

iII

~I

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{VVVVV t~~~~,vv VV 'vvv

~~~:128J

t~::lvvvvv

fvvvvvvv

I v>~i 'O-O-j"00'

~vv~vv v vvvv vvrV V IfVvvv:v:~ vv

vvIVV~ vv.fVV VVI

Figure 5-5

IGeology and Geophysical Log SummaryIiHole NO.:HC-2

!Surface Elevation:5347.12i Depth I Depth , Strata I Rock

i (feel) rmete~i I Unit

itholog"

II

INorthing:162020830Rock IWale, ,Type Level 10

Caliper(inches)

IEastlno:555447.80

200

Gamma Ray(api)

iDate Began' 10/6/96


I DensityI (gmlcm3)

10000

i

~

-.

~:": ; : ; I

.4

~ : ; : .. , : ;.. ., ..+ .. ; ""=.;~=;.

1- .,:

b--.-

.,....

.-.~s::~

I

I·····:·····,······;····-!-····:·····;·····;·····,·····:·····f·····,·

1·····'····;·····;····+····;····;·····,·····;····-;····f·····

f··:····,·,·····I!·····, .. , ··f·····;·, ...! ....

f·····;·····:·····:·····;-..;~=,·····:·····;···!·····

br····'····,·····;·····I'·····,···,·····;····;···.,····! ,,;,: ; -; : :: : , : -f..·;······;·····,······;·····::0..····;······:·····,···1

~

F UID LEVEL

GRANITE

"'APLiTE'"

1260 -11280 1

iLogged By: Century Geophysics/DRI

,Drilling Co.: Beylik Drilling Services

,Drilling Method: Air Rotary/ Reverse Circulation ..__ Figure 5-6



I Hole No.:HC-2

I Surface ElevatJon:5347.12i Depth IDepth .. Strata Rock! (feel) Imelers~ UnJI

I I

t'thO"

I !I

iGeoloav and Geoohvsical Loa Summarv IDate Began:10/6/96 I

I Northina:1620208.30 Eastina:555447.80 IDate Finished: 10/20/96Rock Water Temperature PH I EC LiBrType Level

(F) (umos) (mgtl) I

101600

II

65 706 700 0 50i

1020

1040

1060

1080

1100

1120

1140

1160

1180

1200

1220

1240

1260

1280

1300

F UIDLEVl L

LoggeJ;l By: Century Geophysics/DRI

IDrilling Co.. Beyllk Drilling Services

Drilling Method: Air Rotary/ Reverse Circulation

5-13


Tritium in Fluids(pCilL)

Date Beaan: 10/6/96

-=

;

iEasting:555447.BO

"""' ; ; .:. ,....................... ··1<.

.......~".. ; ; .:. , j

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r

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WaterLevel

GRANITE

Northina:16202DB.30·1 Lithology Rock

Type

v v v v ··-GRANITE'·vvvvvvvvvvvvvvvvvvvvv

r:::::::vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

:«<1vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv~vvvvvvvvvvvvvvvvvvvvvvv~vvvvvvv

....,vvvvv\vvvvvvv

vvvvvv\vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

:<V:<Ivvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv~vvvvvvvvvvvvvvvvv

vvv~vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvrv v vvvvvvvv

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iGeology and Tritium in Fluids

RockUnit

v

800

700

900

500

300

400

200

600

100

1000

1100

1200

Surface Elevation:5347.12Depth I Depth 1 Strata i(feet) I (meters) I I

Hole No.:HC-2



Drilling Method: Air Rotary/ Reverse Circulation HC-2 TritiumFigure 5-8 IT CORPORATION

C t t" 0" 0 "II" Project Shoaloncen ra Ions urmg n mg Project No. 764044.03.07.00.00

5-14

Hole NO.:HC-2 IGeology and Well Construction Summary IDate Began:10/6/96

Surface Elevation:5347.12 INorthina:1620262.90 IEastina:555725.90 IDate Finished:10/20/96Depth Depth Strata Rock Lith Rock Water Caliper Well Construction(feet) (meters) Unit Type Level

(inches)

0 20u u

vv... KG ....:;.. GRANITE ,- ~_-:--20 ,- ~_-:vv-, ....:.-;- --40 / ... ,,:.-;- ,-I60 20 vv... ~:.-;-

\~. CASING 8.625" 0-103.0

80 vv-, ,...:.-;- Ii:"'_vv... ,,:.-;- - =\ CEMENT100 vv-, v:'-;-

120 vv-, v:'-;-40 \--

140 -r. v:'-;- \160 vv, V../180 -r. V../

1'\ BOREHOLE 12.0"0-103.0

.r. V../200 60 .r. V../220 .r. v;'v240 .r. v;'v ,,;;;;

260 .r. v;'v ri-80 .r. v;'v --280 .r. v;'v

300 -r. v;'v.r: V;.V r-

320100 .r: V;.V

340 .r: ;.V360 .r: .·v380 .r, V:':V

400 120 .r, V:':V.r. vS

420 .r. v:':v440

~.Vv

'"'-~460 140 KGA . APLiTE'"

480 CASING 5.5" 0-955.0500 ~. KG '''GRAN!i'E''v:':v :>i---'520 160 <~ v:':v540 v':~ v:':v :~.r:560 »: v:':v ~580 vv~ .....v

~F-.180 V'v600 v.....~v.....~ V'v :'::;~

620 .....v ,.=0:v.....v640 .r: V'v660 200 .r, v:':v680 -r. v:':v700 c: v:':v

.r. v:':v :~

~720 220 .r. v:':v740

v:'v:':v

760 v:':vv v:':v780 .r: -,

240 »: v:':v800 -r: .....v .~

I~ BOREHOLE 8.0" 103.0-1303.0

820 .r: .....v840 /v ~

260 .r: ~ r860 Vy.r:880 .r; Vy900 .r. Vy920 280 vv, V~

940 .r, VV'v-r. VV'v

960 .r, VV'v980 300 .r. VV'v

1000 .r. v:':vv>

V:':V1020 Vy1040

v Vyv320 v

~1060 »:1080 .r: ....~

V-r; ....~1100 ....~vv... UID LEV l

"--~1120 340 vv... .........v1140 vv... .....v1160 .r: .....v

/v.,...:':V

1180 360 -r: ,...y1200 v':,,: ....:':v....y .;---1220 .r: ,...y ,++++++•••• +++1240 .r: - BRIDGED HOLE 1223.00

380 .r: ....y1260 vVv. ....y1280 v> ....y

vv

Logged By: Century Geophysics/DRI Figure 5-9 IT CORPORATIONDrilling'co. Beylik Drilling Services HC-2 Subsurface Well Completion Diagram Project Shoal

IDrillingMethod: Air Rotaryl Reverse Circulation .. ~----_..__._-- '.',. ------- Project No. 764044.03.07.00.00

5-15



Well Pad

1.22 m x 1.22 m x 0.15 m(48 in x 48 in x 6 in)Reinforced with a 15.2-cm x 15.2-cm(6 in x 6 in) wire mat

I•1.22m

(48 in)

PlanView

•IProtective Casing

32.38-cm (12 3/4 in) od0.32-cm (.125 in) wall

Surface Casing

2191-cm (85/8 in) odOA8-cm (.188 in) wall

Intermediate Casing

13.97-cm (5 1/2 in) od12.70-cm (5.0 in) id





Icr\ ~ Lockable LidE .soco 0 32.38-cm (12 3/4 in)od Protective Casing0 NIri

Cap 13.97-cm (5 1/2 in) od ThreadedE .~UI"- 0

N Iri~


E (5 1/2 in) od Threaded Couplingo .~

L() L()

,...: l"-to

Data Logger Access Tube0 •E .~ ·u

C") L()

Concrete PadC") N

M Iri0 •~ • ./f--

.::.... . ':.'.Ground Surface E ':':U I I ...... : ..... : ...Elevation o

.~ .', .:... ', .:.. ',0 I I

1629.81 m N 0 ..... :.......:«t.:: : ..... : ..... : ...Iri to I I ....:......:.....

(5347.12 ft).= ..... :..........

I :...... .... :.: ..........:......: ....: II)..\\Y IA\" , I A ," '"7" , , 1/\\\y {I\\

~~I~d

Surface Casing

Clamp/Landing Platef'r_ofile View


5-16

Table 5-1HC-2 Lithium Bromide Concentrations


mm/dd/yy (24 hrs) (ft) (mg/L) (Co) Sample Source Analysis By10/15/96 1530 NA 25.3 20.3 accs (20 mg/L) J. Saavedra10/15/96 1530 NA 28.1 20.7 Water Truck (WT) J. Saavedra10/15/96 1545 1023 0.9 22.4 Discharge Line (DL) J. Saavedra10/15/96 1615 NA 33.5 21.9 WT J. Saavedra10/15/96 1615 1043 26.9 22.3 DL J. Saavedra10/15/96 1645 NA 30.9 23.7 WT J. Saavedra10/15/96 1745 NA 18.7 24.4 accs (20 mg/L) J. Saavedra10/15/96 1745 1063 23.3 23.9 DL J. Saavedra10/15/96 1800 NA 32.8 22.4 WT J. Saavedra10/15/96 1800 1083 20.6 22.4 DL J. Saavedra10/15/96 1900 NA 25.8 23.3 WT M. Flaugher10/15/96 1900 1095 26.3 23.5 DL M. Flaugher10/15/96 1935 NA 20.9 24.5 accs (20 mg/L) M. Flaugher10/15/96 2000 NA 26.3 22.7 WT M. Flaugher10/15/96 2000 1125 26.0 23.5 DL M. Flaugher10/15/96 2100 1150 24.4 24.3 DL R. Peterson10/15/96 2100 NA 27.6 21.2 WT R. Peterson10/15/96 2100 1150 NA NA DL R. Peterson10/15/96 2220 NA 20.7 24.6 accs (20 mg/L) R. Peterson10/15/96 2200 1180 23.8 25.7 WT R. Peterson10/15/96 2200 1180 25.2 25.5 DL R. Peterson10/15/96 2300 NA 28.6 22.8 WT R. Peterson10/15/96 2300 1190 29.1 23.5 DL R. Peterson10/15/96 2010 NA 20.9 24.7 occs (20 mg/L) R. Peterson10/15/96 2330 NA 32.9 24.5 WT M. Flaugher10/16/96 0000 NA 25.7 24.7 WT M. Flaugher10/16/96 0100 1235 21.2 25.1 DL M. Flaugher10/16/96 0155 1240 26.1 22.7 DL M. Flaugher10/16/96 0200 NA 21.7 24.2 WT M. Flaugher10/16/96 0230 NA 19.6 25.6 accs (20 mg/L) M. Flaugher10/16/96 0206 NA 24.5 24.4 WT M. Flaugher10/16/96 0205 1245 25.2 24.5 DL M. Flaugher10/16/96 0300 NA 27.3 21.3 WT M. Flaugher10/16/96 0305 1260 25.0 24.1 DL M. Flaugher10/16/96 0405 NA 22.6 25.3 WT M. Flaugher10/16/96 0405 NA 19.3 25.9 occs (20 mg/L) M. Flaugher10/16/96 0405 1270 22.2 25.3 DL M. Flaugher10/16/96 0505 NA 23.2 25.3 WT M. Flaugher10/16/96 0505 1290 24.0 24.9 DL M. Flaugher10/16/96 0610 NA 23.9 24.6 WT M. Flaugher10/16/96 0610 1300 27.5 24.5 DL M. Flaugher10/16/96 0615 NA 22.8 25.2 accs (20 mg/L) M. Flaugher10/16/96 0622 NA 29.3 23.6 WT M. Flaugher10/16/96 0622 1300 28.5 23.9 DL M. Flaugher10/16/96 0637 NA 27.6 24.5 WT J. Saavedra10/16/96 0637 1300 28.5 24.7 DL J. Saavedra10/16/96 0652 NA 30.5 23.1 WT J. Saavedra10/16/96 0744 NA 22.4 24.2 accs (20 mg/L) J. Saavedra10/16/96 0652 1300 28.9 25.0 DL J. Saavedra10/16/96 0800 NA 27.9 25.6 WT J. Saavedra10/16/96 0800 1300 25.2 25.5 DL J. Saavedra10/16/96 0945 NA 29.8 23.4 WT J. Saavedra10/16/96 1105 1300 34.6 23.8 DL J. Saavedra

5-17

I

VlI......

00

Table 5-2HC-2 Water Level Measurements

Depth to Elevation

Well Name Date Fluid (ft) (ft) Notes

HC-2 19-0ct-96 1135.25 4211.87 DRI video log initial water level after drilling.

HC-2 19-0ct-96 1129.03 4218.09 IT water monitoring using solinist tape. Meas. to top of casing, approx 3.2 ft above GL



HC-2 20-0ct-96 1110 4237.12 Fluid level from Century neutron logs. Water level estimated from GL.

HC-2 21-0ct-96 1108.8 4238.32 DRI transducer water level to ground surface.

HC-2 21-0ct-96 1108.29 4238.83 IT water monitoring using solinist tape. Measurement to ground surface.

HC-2 21-0ct-96 1108.52 4238.6 Water level obtained by IT Corp. using solinst. Measurement to ground surface.

HC-2 22-0ct-96 1107.12 4240 DRI water level via in hole transducer. Datum is ground surface.

HC-2 23-0ct-96 1105.82 4241.3 DRI transducer water level. Level determined to ground level.

HC-2 07-Nov-96 1102.9 4244.22 Water level obtained by DRI after removing the transducer using an EC temp. tool at GL.

HC-2 13-Nov-96 1101 4246.12 Approx. water level obtained from the DRI down hole video camera. Measurement to GL.

Table 5-3HC-2 List of Geophysical Logs

Geophysical Date Log Top Log Bottom Logging

Well Name Log Logged (ft) (ft) Company









HC-2 Temperature 10/19/96 892.10 1225.80 Century Geophysical

HC-2 Acoustic Borehole Televiewer 10/20/96 1110.86 1222.82 Century GeophysicalHC-2 Acoustic Borehole Televiewer 10/20/96 1110.64 1222.58 Century GeophysicalHC-2 Chemtool 9/21/96 1110.00 1224.00 DRIHC-2 Chemtool 11/14/96 1106.00 1225.00 DRIHC-2 Downhole Video Camera 10/18/96 882.00 0.00 DRI


VIINo


.

Sample NumberDate

Location Sample Type Depth (ft)cac

CommentsCollected Number


PSWOOO03 10/4/96 HC-1 Groundwater 920 519812 Groundwater sample from HC-1 Well Development...Full Lab QC

PSWOOO04 10/4/96 HC-1 Groundwater (dup) 920 519812 Duplicate of sample PSWOOO03

PSWOOO05 10/4/96 HC-1 Water (QC) NA 519812 Equipment Rinsate sample

PSWOOO06 10/4/96 HC-1 Water (QC) NA 519812 Field Blank sample

PSFOOO01 10/5/96 HC-1 Discharge Fluid NA 519816 Composite sample collected at HC-1 Sump #1

PCXOOO01 11/3/96 HC-1 2nd Discharge Fluid NA 519820 Additional fluidsdischarged into HC-1 Sump#1, 2nd composite sample collected.

PSCOOO02 10116/96 HC-2 Cuttings 1253 519813 Cuttings sample from HC-2 taken during drilling.

PSWOOO07 10/21/96 HC-2 Groundwater 1173 519814 Groundwater sample from HC-2 Well Development.

PSFOOO03 10/20/96 HC-2 Discharge Fluid NA 522037 Composite sample collected at HC-2 Sump #1.

PSCOOO03 11/5/96 HC-3 Cuttings 1255 519822 Cuttings sample from HC-3 taken during drilling.

PSWOOO08 11/14/96 HC-3 Groundwater 1104 519823 Groundwater sample from HC-3 Well Develop. Waiting on results.

PSFOOO05 11/12/96 HC-3 Discharge Fluid NA 519824 Composite sample collected at HC-3, Sump #1.


PSWOOO09 11/7/96 HC-4 Groundwater 1130 519819 Groundwater sample from HC-4 using a discrete bailer.


VlItv.......

Table 5-5a to 5-5fHC-2 Sample Results

(Page 1 of 3)

Table 5-5a

I Sample Sample Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chromium

I Location Sample # Date Matrix (mg/L)8 (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-2 PSCOOO02 10/16/96 Cuttings N/Ab N/A N/A N/A N/A N/A N/A N/A N/AHC-2 PSWOOO07 10/21/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-2 PSFOOO03 10/20/96 Sump N/A N/A 0.0621 0.0556 N/A N/A 0.003 (NDt N/A 0.0044 (ND)

Table 5-5b

Sample Sample Cobalt Copper Iron Lead Lithium Magnesium Manganese Mercury MolybdenumLocation Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-2 PSCOOO02 10/16/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-2 PSWOOO07 10/21/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-2 PSFOOO03 10/20/96 Sump N/A N/A N/A 0.0074 N/A N/A N/A 0.00025 N/A


bNot analyzed

CReportedvalue is below detection limit

dUnits in picoCuries per liter (pCi/L) unless otherwise noted.

·PicoCuries per gram

fNot detected

VIItvtv


(Page 2 of 3)

Table 5-5c

Sample Sample Nickel Potassium Selenium Silicon Silver Sodium Strontium Thallium

Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-2 PSCOOO02 10/16/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/AHC-2 PSWOOO07 10/21/96 Groundwater N/A N/A N/A N/A N/A N/A N/A N/A

HC-2 PSFOOO03 10/20/96 Sump N/A N/A 0.0031 N/A 0.0066 (ND) N/A N/A N/A

Table 5-5d

Sample Sample Uranium Vanadium Zinc Tritium Gross Alpha Gross Beta Bismuth-214

Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (pCi/L)d (pCi/L) (pCi/L) (pCi/L)

HC-2 PSCOOO02 10/16/96 Cuttings N/A N/A N/A N/A N/A N/A 0.82 pCi/ge

HC-2 PSWOOO07 10/21/96 Groundwater N/A N/A N/A 2 70.1 64.6 36.9

HC-2 PSFOOO03 10/20/96 Sump N/A N/A N/A 13 6.15 6.61 NDT


bNot analyzed

'Reported value is below detection limit


ePicoCuries per gram

'Not detected


(Page 3 of 3)

Table 5-5e

Sample Sample Cesium-137 Lead-212 Lead-214 Potassium-40

Location Sample # Date Matrix (pCi/L) (pCi/L) (pCi/L) (pCi/L)

HC-2 PSCOOO02 10/16/96 Cuttings 0.17 pCilL (NO) NO pCi/g NO pCi/g 27.8 pCi/gHC-2 PSWOOO07 10/21/96 Groundwater 4.5 (NO) 44.6 41.2 1210

HC-2 PSFOOO03 10/20/96 Sump NO NO NO NO

Table 5-5f

Sample Sample Radium-226 Radium-22S Thallium-20S

Location Sample # Date Matrix pCi/L pCilL (pCi/L)

HC-2 PSCOOO02 10/16/96 Cuttings NO pCi/g NO pCi/g 0.22 pCi/g

HC-2 PSWOOO07 10/21/96 Groundwater 100 55.6 NOHC-2 PSFOOO03 10/20/96 Sump NO NO NO

'Milligram(s) per liter

bNot analyzed

'Reported value is below detection limit

dUnits in picoCuries per liter (pCilL) unless otherwise noted.


INot detected

6-1


Well HC-3 was drilled to a depth of 397.15 m (1,303.0 ft), between November 3, 1996, and

November 10, 1996. Eight days were spent drilling and completing the installation of this well.

Note that the Figures 6-1 through 6-9 and Tables 6-1 through 6-5, cited in the following text, are

located at the end of this section.



equipment was subjected to radiologic screening prior to mobilization to the drill site.

A 30.48-cm (12.0-in.) hole for the surface conductor was drilled using reverse air rotary reverse

circulation techniques and a downhole percussion hammer to a depth of 31.39 m (103.0 ft) bgs. A

21.91-cm (8.625-in.) carbon steel casing was installed in this hole and cemented to the surface

using Type II cement with 2 percent calcium chloride additive.

The main hole was drilled from below the casing point to a TD of 397.15 m (1,303.0 ft) bgs using

a 20.32-cm (8.0-in.) downhole percussion hammer and air rotary reverse circulation techniques.

Drilling progressed smoothly during the advance of the main hole. Some short delays resulted

from leaks/washouts of the discharge hose and cyclone; repairs were made quickly; and drilling

resumed. Drilling parameters for the well are provided in Figure 6-1. All figures and tables cited

in the text are located at the end of this section.

Upon completion of drilling operations, the well was circulated and developed for a period of

several hours. No fill was noted after completion of these operations, and the drill pipe was

tripped out of the hole on November 11, 1996, in anticipation of geophysical logging.

Geophysical logging commenced early on November 11, 1996. The first log run by DRI

encountered a bridge/obstruction at a depth at 165.81 m (544.0 ft) bgs. DRI removed the

wireline from the hole, and the bridge was removed with a sinker bar. DRI reentered the borehole

and resumed logging. A second borehole obstruction was encountered at a depth of 362.71 m

(1,190.0 ft) bgs. Several unsuccessful attempts were made to remove the obstruction using a

sinker bar. Beylik tripped back into the hole with a 20.0-cm (7.875-in.) percussion hammer bit to

clear the obstruction. Circulation was established at 304.8 m (1,000 ft) bgs. Severe sloughing of

the borehole was experienced in the interval between 329.18 and 335.28 m (1,080.0 and

6-2

1,100.0 ft) bgs, resulting in poor circulation and plugging of the drill bit. The drilling assembly

was tripped from the hole on November 11, 1996, and converted to conventional/direct

circulation. In order to facilitate conventional circulation, a second air compressor was placed on

site. Initial, direct circulation was established at a depth of 1,080 ft (329.81 m) using a mixture of

fresh water and foam. The well was then circulated and cleaned to TD of 397.15 m (1,303.0 ft)

bgs. Upon cleaning/circulating the borehole for a short period, the drill pipe was pulled back to a

depth of 365.75 m (1,200.0 ft) bgs to check for sloughing in the well.

The drilling assembly was lowered into the well to the TD of 397.15 m (1,303 ft) bgs, and

attempts to regain circulation were made without success. The drilling assembly was then tripped

out to a depth of 377.95 m (1,240.0 ft) bgs to make additional attempts to regain circulation.

After several attempts using foam and fresh water met with limited success, the drilling

subcontractor ran out of foam additive for the drilling fluids. Continued efforts to circulate using

only fresh water proved unsuccessful. Sloughing hole conditions resulted in the additional loss of

hole to a depth of 370.33 m (1,215 ft) bgs. It was determined that the drilling assembly be pulled

from the hole and intermediate casing be set to isolate sloughing portions of the hole.

On November 8, 1996, prior to setting intermediate casing, Century Geophysical completed a

suite of geophysical logs within the unsaturated portions of the borehole to a depth of 311.81 m

(1,023.0 ft) where a bridge prevented further logging.

Intermediate 13.97-cm (5.5-in.) carbon steel casing was set to a depth of 333.57 m (1,094.4 ft)

bgs after completing the unsaturated logging suite. Water level at the time the casing was set was

recorded at a depth of 330.10 m (1,083.0 ft). Upon setting of intermediate casing, a sinker bar

was run on the sand line to determine the TD of the well. The resulting measurement indicated

the well was bridged at a depth of 338.33 m (1,110.0 ft) bgs.

The hole was reentered on November 8, 1996, with a 11.75-cm (4.625-in.) tricone button bit

using a reverse circulation drilling assembly to attempt to clean out the well to TD. Several

attempts to clean and circulate to depths below the casing resulted in further sloughing of the

borehole and several plugged drill strings and bits. Clean out operations were conducted to a

depth of 384.05 m (1,260.0 ft) bgs, at which time it was determined to accept the depth of the

well as the TD. The drill pipe was pulled from the well, and Century Geophysical attempted to

log to the TD of the well when they encountered a bridge at a depth of 347.78 m (1,141.0 ft) bgs.

This depth was considered too shallow to allow access to saturated portions of the borehole.

Several attempts were made to clear the bridge using a sinker bar on a sand line with no

6-3

appreciable progress. The hole was again reentered with a 11.75-cm (4.625-in.) tricone bit using

reverse circulation. Several attempts were made to clean out the borehole, resulting in several

episodes of plugging of the drill bit and drill pipe. On the morning of November 10, 1996, efforts

to clean the borehole were abandoned, and the drill pipe was pulled from the borehole in

preparation for geophysical logging. The TD of the well recorded by Century Geophysical was

345.98 m (1,135.1 ft) bgs. The water level noted during logging at this time was 337.11 m

(1,106.0 ft) bgs.

6.1 Well HC-3 GeologyWell HC-3 principally encountered a fractured, coarse-grained, biotite granite of Cretaceous age

throughout the drilled interval. Significant fault/fracture zones were apparent over the following

intervals: 161.54 to 170.69 m, 274.32 to 283.46 m, 292.61 to 297.18 m, and 338.33 to 353.57 m

(530.0 to 560.0 ft, 900.0 to 930.0 ft, 960.0 to 975.0 ft, and 1,110.0 to 1,160.0 ft). No andesite

was noted in the original cuttings collection process; however, andesitic cuttings were noted in

the drilling returns from attempts to clean fill and obstructions from the well. The occurrence of

these cuttings suggest that thin andesite dikes or dikelets may occur within some of the fault or

fracture zones. A descriptive lithologic log is provided as Figure 6-2.

6.2 Well HC-3 Hydrology Several elements of hydrologic importance were monitored during and after the completion of the

well. During drilling operations, the following two monitoring parameters were consistently

compared: the volume of drilling fluids (water/foam) injected to facilitate drilling and volumes of

fluid produced as discharge to the surface during the same time. Figure 6-3 illustrates the

relationships between injected drilling fluids and drilling fluid produced at the surface.

In addition to these volumetric measurements, all drilling fluids injected into the borehole were

tagged with a tracer solution of LiBr. The concentration of this solution was monitored on a

regular basis to estimate groundwater production within the borehole. Figure 6-1 illustrates LiBr

concentrations noted in produced fluids.


suggest the well was capable of producing approximately 2.8 to 3.8 L/min (0.75 to 1.0 gpm).

During several instances, the well was capable of intermittent production on the order of

11.4 to 18.9 L/min (3.0 to 5.0 gpm). These readings suggest production from perched water

zones along fault or fracture zones. These zones were of limited impact as their storage capacities

were exhausted and their contribution to well bore decreased.

6-4




6.3 Well HC-3 Geophysical SurveysUpon completion of drilling to the TD of 397.15 m (1,303.0 ft) and after a session of well

development, a suite of downhole geophysical surveys was run within the borehole. Due to

unstable borehole conditions geophysical logging was conducted in two phases. The first phase

consisted of logging by Century Geophysical and DRI to a depth of approximately 311.81 m

(1,023.0 ft) bgs. Upon completion of these logging runs, intermediate casing was installed in the

well to a depth of 333.57 m (1,094.40 ft) bgs. After casing installation, the well was logged from

below the casing point to the accessible TD of the well of 345.98 m (1,135.1 ft) bgs. That

portion of the borehole from 311.81 to 333.57 m (1,023.0 to 1,094.4 ft) bgs was not available for

geophysical logging due to unstable borehole conditions and the resulting installation of

intermediate casing.

Geophysical logs specified for the saturated portion of the borehole were not conducted due to

the slow recovery of water levels in the well and the short interval of open borehole below the

casing point.

Deviation surveys conducted within the casing and borehole indicate the borehole was deviated

18.1 degrees from vertical in a west-southwest direction. The deviation of the hole placed the

bottom of the hole 40.08 m (131.5 ft) west-southwest of the collar and resulted in a true vertical

depth of 304.89 m (1,000.30 ft) bgs.

Table 6-3 provides a summary of the geophysical logs run for the well and the corresponding

logged intervals. Additional specialized logging was performed by DRI as part of their scientific

work scope. Figures 6-4 to 6-6 provide condensed illustrations of log traces for Well HC-3.



(DOE/NV, 1996c). Regular radiological monitoring of discharged drilling effluents, including

both fluids and solids, was conducted by Bechtel Nevada radiation control technicians.

6-5

Samples for further on-site lab analysis were screened using handheld instruments at the time of

sample collection. Effluents were then analyzed for tritium and other radionuclides using on-site

laboratory monitoring equipment. Tritium activities from fluid and swiped samples were recorded

using a Packard Liquid Scintillation instrument. Other radionuculides were analyzed using

Canberra gamma spectroscopy instrumentation.

Well HC-3 drilling effluents were found to contain only natural background levels of tritium and

other radionuculides based on results of field monitoring. Figure 6-7 provides a profile of tritium

encountered from fluids generated during drilling.

6.5 Well HC-3 Well ConstructionConstruction of Well HC-3 included the drilling of a 30.48-cm (12.0-in.) surface borehole to a

depth of 31.39 m (103.0 ft). Conductor casing comprised of 21.91-cm (8.625-in.) carbon steel

was installed in the 30.48-cm (12-in.) hole. Bow-type centralizers were placed approximately

1.52 m (5.0 ft) from the bottom of the casing and then centered at the surface. Conductor casing

was cemented to the surface using Type II neat cement with 2 percent calcium chloride as an

additive to aid curing time. A 20.32-cm (8.0-in.) borehole was drilled to a TD of 397.15 m

(1,303.0 ft) bgs from beneath the conductor casing.

Intermediate 13.97-cm (5.50-in.) carbon steel casing was installed in the completed borehole and

set at a depth of 333.57 m (1,094.4 ft) bgs. Intermediate casing was installed without specified

centralizers or cement baskets due to adverse borehole conditions. Intermediate casing was

suspended on landing straps secured to the surface conductor casing. Figure 6-8 provides a

schematic view of the final completion, and the surface completion for the well head is illustrated

in Figure 6-9.

6-6

6.6 Well HC-3 SamplingSamples for analytical analysis were collected from fluids and cuttings as specified in the Field

Instructions for Project Shoal Area Surface and Subsurface Investigation, Churchill County,

Nevada (IT, 1996) and the FMP for the Project Shoal Area Offsites Subproject


Tables 6-4 and 6-5.

IDHDEPTH: 1303.00

I! Geology and Drilling Parameters

5000

WOS(psi)

RotaryTorque

(psi)

Water Water

'"I~r ,fod"diOORate of

Penetration(minlft)

o

,.\ , ; ; .

Rock WaterType Level

I Lith

Hole NO.:HC-3

Surface Elevation:5081.52Depth I Depth ! Strata Rock(feet) (meters) Unit

i I

I

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200J ~ v v60-vVV

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300 --1,;",vyvvJ

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360 -YVVV~l1200 j tv"'","'..-yvv

i tvvvvIVV

I 380-VVVi -J...vvvvJ tvv

~vvI ~ v vJ -vvv


Figure 6-1Summary of Well HC-3 Drilling Parameters__. ~ . . ._~~~~===~=_-l


Drilling Co.: Beylik DrillingServices

Drilling Method: Air Rotaryl Reverse Circulation

6-7


WEll ID. HC-3 GRANITE 0.00 200.00 jaw 11/04/96Granite, light grayish white to light pinkish gray, porphyritic, milky whiteto pinkish white kspar, principally microcline up to 15mm occura asprominant porphyritic subhed to euhed xls and in total comprise (35-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xls (30%), minor white to translucent plagioclase «lO%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xls altering locally to chlorite, some smalleraggregates to 3 mm (10%), Magnetite also noted as isolated blebs and subhedxIs < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings are prevelent throgh out most cuttings. CUttings quality isgood with chips nominally 2-4mm, larger cuttings noted in the interval110-120 indicating a possible fracture.

WEll ID. HC-3 GRANITE 200.00 300.00 jaw 11/04/96Granite, light grayish white to light pinkish gray, porphyritic, milky whiteto pinkish white kspar, principally microcline up to lSmm occura asprominant porphyritic subhed to euhed xls and in total comprise (35-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xls (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xls altering locally to chlorite, some smalleraggregates to 3 mm (10%), Magnetite also noted as isolated blebs and subhedxls < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings are prevelent throgh out most cuttings. CUttings quality isgood with chips nominally 2-4mm, larger cuttings noted in the interval210-220, 230-240 and 280-290 with cuttings to 10 -15 mm indicating apossible fractures. Schlerien foliation noted in the inteval 200-210'alongwith chloritization of rock.

WEll ID. HC-3 GRANITE 300.00 400.00 jaw 11/04/96Granite, light grayish white to light gray, porphyritic, milky white toslightly pinkish white kspar, principally microcline up to lSmm occura asprominant porphyritic subhed to euhed xls and in total comprise (35-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xls (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xls altering locally to chlorite, some smalleraggregates to 3 mm (10%), Magnetite also noted as isolated blebs and subhedxls < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings are prevelent throgh out most cuttings. CUttings quality isgood with chips nominally 2-4mm.

WEll ID. HC-3 GRANITE 400.00 600.00 jaw 11/04/96Granite, light grayish white to light gray, porphyritic, milky white toslightly pinkish white kspar, principally microcline up to 15mm occura asprominant porphyritic subhed to euhed xls and in total comprise (35-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xls (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual.xls altering locally to chlorite, some smalleraggregates to 3 mm (10%), Magnetite also noted as isolated blebs and subhedxls < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings are prevelent throgh out most cuttings. CUttings quality isgood with chips nominally 2-4mm. Apparent fracture zone 410-450' largeblocky cuttings/rubble to 20mm. Other minor fractures? noted 530-540' andpossibly 590-600'.

WEll ID. HC-3 GRANITE 600.00 800.00 jaw 11/05/96Granite, light grayish white to light gray, porphyritic, milky white toslightly pinkish white kspar, principally microcline up to 15mm occura asprominant porphyritic subhed to euhed xls and in total comprise (35-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xls (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xls altering locally to chlorite, some smalleraggregates to 10 mm (10%), Magnetite also noted as isolated blebs and subhedxls < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings are prevelent throgh out most cuttings. CUttings quality isgood with chips nominally 2-4mm. Large cuttings indicative of potential


(Page 1 of 2)

6-8

fractures or zones of fractures noted in the interval 630-640', 690-700'and720-7S0' cuttings i~ these intervals range from 10 -1S~~.

WEll ID. HC-3 GRANITE 800.00 880.00 jaw 11/0S/96Granite, light grayish white to light gray, porphyritic, milky white toslightly pinkish white kspar, principally microcline up to 1Smm occura asprominant porphyritic subhed to euhed xIs a~d in total comprise (3S-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xIs (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xIs altering locally to chlorite, some smalleraggregates to 10 mm (10%), Magnetite also noted as isolated blebs and subhedxIs < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings mostly on quartz xIs are prevelent throgh out most cuttings.Interval is mostly fractured with large (10-20mm) rubbly cuttings notedthroughout the interval.

WEll ID. HC-3 GRANITE 880.00 1060.00 jaw 11/0S/96Granite, light grayish white to light gray, porphyritic, milky white toslightly pinkish white kspar, principally microcline up to lSmm occura asprominant porphyritic subhed to euhed xIs and in total comprise (3S-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xIs (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xIs altering locally to chlorite, some smalleraggregates to 10 mm (10%), Magnetite also noted as isolated blebs and subhedxIs < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings mostly on quartz xIs are prevelent throgh out most cuttings.CUttings quality is generally good with cuttings ranging from 1-3mm.Interval 920-930'and 970-980'contain larger cuttings S-12mm suggestingpossible fracture zone.

WEll ID. HC-3 GRANITE 1060.00 1150.00 jaw 11/0S/96Granite, light grayish white to pinkish light gray, porphyritic, milky whiteto slightly pinkish white kspar, principally microcline up to lSmm occur asprominant porphyrltic subhed to euhed xIs and in total comprise (3S-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xIs (30%), minor white to translucent plagioclase «10%).Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xIs altering locally to chlorite, some smalleraggregates to 10 mm (10%), Magnetite also noted as isolated blebs and subhedxIs < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings mostly on quartz xIs are prevelent throgh out most cuttings.CUttings quality is generally good much of the interval is comprised oflarge rubbly cuttings (S-20mm) likely resulting from a fracture zone.

WEll ID. HC-3 GRANITE 1150.00 1303.00 jaw 11/06/96Granite, light grayish white to pinkish light gray, porphyritic, milky whiteto slightly pinkish white kspar, principally microcline up to 1Smm occur asprominant porphyritic subhed to euhed xIs and in total comprise (3S-40%) ofthe whole rock. Groundmass comprised of medium to coarse grained clear tomilky quartz xIs (30%), minor white to translucent plagioclase «10%)Black to greenish black biotite is abundant consisting of isolated thinbooklets and individual xIs altering locally to chlorite, some smalleraggregates to 10 mm (10%), Magnetite also noted as isolated blebs and subhedxIs < 2mm. Spotty faint yellow to ocherous orange limonite/hematite stainsand coatings mostly on quartz xIs are prevelent throgh out most cuttings.CUttings quality is generally good with a nominal size of 2.0-3.0mm.Possible fracture zone exists in the interval 1230 - 1240 as cuttings are8-12 mm.


(Page 2 of 2)

6-9

15

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i Date Finished:11/10/96

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(gpm)

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Northing:1618822.90

Geoloav and Water Production Summarv

ILithology I Rock [water

Type Ilevel

I Iv v vIGRANITEvVVV'vvv

vvvV'vvv

vvvV'vvv

vvvV'vvvvvvV'vvvvvvV'vvv~vvvV'vvv

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RockUnit

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500

900

700

400

800

600

300

100

200

1100

1000

1200

Depth I Depth Strata(feet) ,(meters)

i

:Surface Elevation:5081.52

:Hole NO.:HC-3

ILogged By: Century GeophysicslDRI

II Drilling Co.: Beylik Drilling Services He-3 FluidDrillina Method: Air Rotarv/ Reverse Circulation

Figure 6-3Injection versus Production Diagram


6-10

IDate Began·1113/96Geology and Geophysical Log SummaryHole No ·HC 3-Surface Elevalion:5081.52 Northing:1618822.90 iEasting:560114.70 Date Finished:11/10/96

Depth , Depth ~ Strata Rock PthOlog~ Rock 1 Water Spectra Gamma Ray Spectra Gamma Ray

I

Spectra Gamma Ray I

(feet) (meters) Unit

I I

Type level !I Potassium Uranium Thorium

II I (cps) (cps) (cps)

1~i ! 0 1000 0 2500v ,

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vvvv

40 ~lvVV ~vvvv.Jvvvvv

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Loggeq By: Century Geophysics/DRI IT CORPORATION IDrillin .: B lik ri in Ig Co ey D II 9 Services • Project Shoal

IDrillingMethod: Air Rotary/ Reverse Circulation Figure 6-4 Project No. 764044.03.07.00.00


IGeology and Geophysical Log Summary


Date Began:11/3/96Hole NO.:HC-3

Surface Elevation:5081.52Depth Depth Strata Rock(feet) meters Unit

ithologINorthing: 1618877.60

Rock WaterType Level

o

Caliper(inches)

IEasting:560392.60

200

Resistivity(ohmlm)

(log not run)5000

Neutron(cps)

(log not run)2000C

1020

1040

1060

1080

1100

1120

1140

1160

1180

1200

1220

1240

1260

1280

1300

320

340

360

380

vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

IVF UID LEV l

I



IDrilling Method: Air Rotaryl Reve£se Circulation Figure 6-5



Hole NO.:HC-3 Geology and Geophysical Log Summary i Date Beoan:11/3/96

ISurface Elevation:5081.52Deplh rDepth !.. Strala! Rock(feel) meters) I Unit

,! I I

~lthOlog~

I I

I

INorthino161882290Rock IWater IType Level 10

Caliper(inches)

IEasting:560114.70

200

Gamma Ray(api)

!Date Finished:11/1 0/96

.[' Density(gmlcm3)

10000

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GRANITE

20

40

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140 -j160 l180 l

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260 j280

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~~~~ ~1140 -j1160 11180l

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1240 -:11260 !

iLogged.By: Century Geophysics/DRI IT CORPORATION.Drilling Co.: Beylik Drilling Services • Project ShoaliDriliing Method: Air Rotaryl Reverse Circulation Figure 6-6 Project No. 764044.03.07.00.00



Project No. 764044.03.07.00.00

:Date Began 11/3/96iGeology and Tritium in Fluids

ILogges By: Century Geophysics/DRI Figure 6-7Drilling Co.: Beylik Drilling Services HC-3 Tritium Concentrations During DrillingDrillin Method: Air Rota I Reverse Circulatior, _-,--,==c.:..:.=':""=====':"::==__..J

'Hole NO.:HC-3

Surface Elevation:5081.52 iNorthina:1618822.90 j Eastina:560114.70 ,Date Finished:11/10/96Depth Depth , Strata

IRock I Lithology Rock i Water Tritium in Fluids 1

(feet) (meters) ! Unit Type ! Level(pCilL) ii

II I

J I 0 800q

vvvv-.J KG ~......vvvvvvGRANITE

~ ~VvVvVvVII rvv1--VvVvVv~ vvvv

l vvv

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20--: v v v VI VVVV

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1 vvv vvv1601.-v v v 1 vvvv

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I

6-14

Hole No.:HC-3 Geoloav and Well Construction Summarv Date Began:11/3/96

Surface Elevation:5081.52 iNorthing: 1618822.90 IEastina:560114.70 iDate Finished:11/10/96 iDepth

I (~:iet~) iSt~t·1Rock i ""] Rock I Waler Caliper

IWell Construction Ii

(feet) Unrt

I I

Type Level(inches)

I

r I 0 201

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....•_:::! ;:;.-:+ CEMENTYvv V': ~ ;:;.--.. _-E-::

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80 .v

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120 j40

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1vv ~vd

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tV rv~

200 i:: V1~j vj680 tVv~ rVJ ~:700 V '<I I v!

720 3 220 t::1rv'1 BOREHOLE 8" 103.0-1303.0

~:j10-:

740 ~

760 1 fv'<lv1

~:J780 1 '~~~~800 ~ -i'v e820 .j.,Vv :3:~1

.j.,Vv

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880 j,vv

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980 ~ rv-J,

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1040-i rvj

1060-:]320 vv'<l v-J

1080 -i t::J ~:~1100 ~ SL

340 1v:~ bV~ +++++++++++++++++++.1120-1

UIDlEVIl +++++++++++++++++++.+++++++++++++++++++.

1140 -j}::j

,:~ ++++++++++++++++++++++++•••++++++++++++•

• ++.+.++++++++++++++1160 -1 Vvj ++++++++++++++++++++ I,

360{:~~++++++++++++++++++++

I l t] ~++++++++++++++++++++ I! 1180 ~ ++++++++++++++++++++

I++++++++++++++++++++

i 1200

~:+++++++++++++++++++++++++++++ +++

12201 t:v~++++++++++++++++ FILL 1104.00-1303.0

i ++++++++++++++++++++++++++++++++++++++++I ... v~

~~++++++++++++++++++++

I 1240 "j 380...j..vv ++++++++++++++++++++

L126~j t::~++++++++++++++++++++

++++++++++++++++++++I . ++++++++++++++++++++

1280 ++++++++++++++++++++++++++++++++++++++++. . . , . .

:::::.+:::.+.+,,:.+,:::.+:.+.... ...- ....• ".: ...:,,:..:.~~~.:..:.:.L-__

ILogged.By: Century GeophysicslDRI Figure 6-8 IT CORPORATIONIDrilling Co.: Beylik Drilling Services • • Project Shoal!Drilling Method: Air Rotary! Reverse Circulation ~~-!_~_~~~.~.~.!~e W!~I_CO~I?!~!~~~P~.~!I.~am Project No. 764044.03.07.00.00

6-15



Well Pad


E ~

'" to"'::!.

1.22 m

(48 in)

Plan View

• IProtective Casing

32.38-cm (12 3/4 in) od0.32-cm (.125 in) wall

Surface Casing

21.91-cm (8 5/8 in) odOA8-cm (.188 in) wall

Intermediate Casing

13.97-cm (5 1/2 in) od12.70-cm (5.0 in) id





~ ~ Lockable Lidn .~

LO LO

32.38-cm (12 3/4 in)od Protective Casing~ r--r--: <D~

Cap 13.97-cm (5 1/2 in) od ThreadedE .sor-- 0

N 0.0~


E (5 1/2 in) od Threaded Couplingo .s

LO LO

r--: r--<D

Data Logger Access Tube0

;E .o .sr-- LOen

<'"i 0.00 £~

E 1o .~

III<X> 0r-- r--: I Concrete Padr--:

~ 1 .If-- .. .. .. I . ' .. ...

Ground Surface E .: ..... ; ..: /:,:' 1 : •... :~.~: .~.o .~ .", .:... ',

.', .:..Elevation -e-0 . : ... ',: ..

,/\ I : ..... :~.~: .~.N1548.85 m 0.0 <D ......:.....

I....:..

(5081.52 ft) ~ ~: .~:.:::." :.,,-:,: .:.: ....I

110.\\11 A \.- /}"\\Y ,,\\Y. I I 1\' ' .. '/'1.\' ,1\ \ \ Y1\' ,~ ''" .-

~ - , .\. d- ~ .... - ~

i-,~- Surface Casing

.Clamp/Landing Plate


6-16



mm/dd/yy (24 hrs) (tt) (mg/L) (Co) Sample Source Analysis By11/4/96 2330 NA 19.9 26.3 QA Standard AM. Welcher11/4/96 2225 NA 28.8 26.0 Water Truck AM. Welcher11/4/96 2230 623 29.7 26.0 Discharge Line AM. Welcher11/4/96 2330 643 29.3 26.0 Discharge Line AM. Welcher11/5/96 0040 683 20.4 26.0 Discharge Line A.M. Welcher11/5/96 0145 703 30.5 26.1 Discharge Line A.M. Welcher11/5/96 0230 NA 20.0 25.7 QA Standard A.M. Welcher11/5/96 0145 NA 29.7 26.1 Water Truck A.M. Welcher11/5/96 0245 NA 28.9 25.7 Water Truck AM. Welcher11/5/96 0245 743 29.8 25.7 Discharge Line AM. Welcher11/5/96 0345 780 31.3 25.7 Discharge Line AM. Welcher11/5/96 0445 790 31.7 25.9 Discharge Line AM. Welcher11/5/96 0550 NA 20.0 25.6 QA Standard AM. Welcher11/5/96 0545 820 31.4 26.1 Discharge Line J. Wurtz11/5/96 0615 840 30.7 25.6 Discharge Line J. Wurtz11/5/96 0700 860 36.6 25.7 Discharge Line J. Wurtz11/5/96 0730 880 38.7 25.7 Discharge Line J. Wurtz11/5/96 0800 900 42.4 25.7 Discharge Line J. Wurtz11/5/96 0845 NA 20.1 20.1 QA Standard J. Wurtz11/5/96 0830 NA 43.1 25.8 Water Truck J. Wurtz11/5/96 0830 920 47.5 25.7 Discharge Line J. Wurtz11/5/96 0900 NA 47.5 25.9 Water Truck J. Wurtz11/5/96 0915 940 45.9 25.9 Discharge Line J. Wurtz11/5/96 1110 960 43.4 25.9 Discharge Line J. Wurtz11/5/96 1330 NA 20.2 25.8 QA Standard J. Wurtz11/5/96 1135 980 44.9 26.0 Discharge Line J. Wurtz11/5/96 1210 1000 45.4 26.0 Discharge Line J. Wurtz11/5/96 1305 1023 41.5 25.9 Discharge Line J. Wurtz11/5/96 1320 1043 39.5 25.9 Discharge Line J. Wurtz11/5/96 1400 1060 39.4 25.9 Discharge Line J. Wurtz11/5/96 1430 1083 44.5 25.9 Discharge Line J. Wurtz11/5/96 1800 NA 23.9 25.0 QA Standard P. Gallo11/5/96 1930 NA 20.0 25.4 QA Standard AM. Welcher11/5/96 1500 NA 36.7 25.4 Water Truck AM. Welcher11/5/96 1500 1090 39.0 25.4 Discharge Line A.M. Welcher11/5/96 1600 1120 26.7 25.4 Discharge Line AM. Welcher11/5/96 1640 1143 29.6 25.4 Discharge Line AM. Welcher11/5/96 1710 1163 27.5 25.4 Discharge Line AM. Welcher11/5/96 2115 NA 20.0 25.9 QA Standard AM. Welcher11/5/96 1740 1183 30.8 25.9 Discharge Line A.M. Welcher11/5/96 1820 NA 29.9 25.9 Water Truck AM. Welcher11/5/96 1820 1203 34.8 25.9 Discharge Line AM. Welcher11/5/96 1905 NA 21.1 25.9 Water Truck AM. Welcher11/5/96 1905 1223 23.6 25.9 Discharge Line A.M. Welcher11/5/96 2400 NA 20.0 25.7 QA Standard AM. Welcher11/5/96 2005 1243 19.8 25.7 Discharge Line AM. Welcher11/5/96 2105 1263 21.0 25.7 Discharge Line A.M. Welcher11/5/96 2200 NA 20.6 25.7 Water Truck AM. Welcher11/5/96 2200 1283 18.5 25.7 Discharge Line AM. Welcher11/5/96 2305 1303 18.4 25.7 Discharge Line AM. Welcher11/6/96 0030 NA 20.0 25.3 QA Standard AM. Welcher11/6/96 0230 1303 16.5 25.3 Circulating AM. Welcher

6-17

0\I...-00


Depth to Elevation

Well Name Date Fluid (tt) (tt) Notes

HC-3 06-Nov-96 1186 3895.52 H20 level approximate.Obtained by DRI using EC response in chemtool. Hole bridged at 1190 ft.

HC-3 09-Nov-96 1077.67 4003.85 H20 level meas. to top of casing (4.82 ft); located in elevators on drill table. Meas. adj. to GL.

HC-3 10-Nov-96 1107 3974.52 H20 level from temp. log from Century Geophysics after completion of circulation and clean-out.

0'\I-'0


Geophysical Date Log Bottom Log Top Logging

Well Name Log Logged (ft) (ft) Company





HC-3 Spectra Gamma Ray (K, U, Th) 11/8/96 1023.10 0.00 Century GeophysicalHC-3 Temperature 11/10/96 1135.10 1002.80 Century GeophysicalHC-3 Downhole Video Camera 11/6/96 750.00 0.00 DRI


0'1I

tvo

Table 6-4HC-3 Summary of Subsurface Investigation

Samples

Sample NumberDate

Location Sample Type Depth (ft) COC Number CommentsCollected

PSCOOO01 10/2/96 HC-1 Cuttings 930 519811 Cuttings sample collected at HC-1 during drilling.PSWOOO03 10/4/96 HC-1 Groundwater 920 519812 Groundwater sample from HC-1 Well Development...Full Lab QCPSWOOO04 10/4/96 HC-1 Groundwater (dup) 920 519812 Duplicate of sample PSWOOO03PSWOOO05 10/4/96 HC-1 Water (QC) NA 519812 Equipment Rinsate samplePSWOOO06 10/4/96 HC-1 Water (QC) NA 519812 Field Blank samplePSFOOO01 10/5/96 HC-1 Discharge Fluid NA 519816 Composite sample collected at HC-1 Sump #1PCXOOO01 11/3/96 HC-1 2nd Discharge Fluid NA 519820 Additional fluids discharged into HC-1 Sump #1, 2nd composite sample collected.

PSCOOO02 10/16/96 HC-2 Cuttings 1253 519813 Cuttings sample from HC-2 taken during drilling.PSWOOO07 10/21/96 HC-2 Groundwater 1173 519814 Groundwater sample from HC-2 Well Development.PSFOOO03 10/20/96 HC-2 Discharge Fluid NA 522037 Composite sample collected at HC-2 Sump #1.PSCOOO03 11/5/96 HC-3 Cuttings 1255 519822 Cuttings sample from HC-3 taken during drilling.PSWOOO08 11/14/96 HC-3 Groundwater 1104 519823 Groundwater sample from HC-3 Well Develop. Waiting on results.PSFOOO05 11/12/96 HC-3 Discharge Fluid NA 519824 Composite sample collected at HC-3, Sump #1.PSCOOO04 10/23/96 HC-4 Cuttings 1250 519817 Cuttings sample collected at HC-4 during drilling.PSWOOO09 11nJ96 HC-4 Groundwater 1130 519819 Groundwater sample from HC-4 using a discrete bailer.PSFOOO07 10/24/96 HC-4 Discharge Fluid NA 519818 Composite sample collected at HC-4, Sump #1

0\I

N.......

Table 6-5a to 6-5eHC-3 Sample Results

(Page 1 of 3)

Table 6-5a

Sample Sample Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium ChromiumLocation Sample # Date Matrix (mg/L)a (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-3 PSCOO03 11/5/96 Cuttings N/Ab N/A N/A N/A N/A N/A N/A N/A N/AHC-3 PSWOOO08 11/14/96 Groundwater N/A N/A 0.0018 (ND)" 0.0472 N/A N/A 0.0006 (ND) N/A 0.0394HC-3 PSFOOO05 11/12/96 Sump N/A N/A 0.0018 (ND) 0.138 N/A N/A 0.0006 (ND) N/A 0.0032

Table 6-5b

Sample Sample Cobalt Copper Iron Lead Lithium Magnesium Manganese Mercury MolybdenumLocation Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-3 PSCOO03 11/5/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-3 PSWOOO08 11/14/96 Groundwater N/A N/A N/A 0.0414 N/A N/A N/A 0.00024 N/AHC-3 PSFOOO05 11/12/96 Sump N/A N/A N/A 0.0049 N/A N/A N/A 0.00016 N/A

"Milligram(s) per liter

bNot Analyzed

CReportedvalue is below the detection limit.



'Not detected

-


(Page 2 of 3)

Table 6-5c

Sample Sample Nickel Potassium Selenium Silicon Silver Sodium Strontium ThalliumLocation Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-3 PSCOO03 11/5/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/AHC-3 PSWOOO08 11/14/96 Groundwater N/A N/A 0.0028 (ND) N/A 0.0015 (NO) N/A N/A N/AHC-3 PSFOOO05 11/12/96 Sump N/A N/A 0.0028 (ND) N/A 0.0015 (NO) N/A N/A N/A

Table 6-5d

Sample Sample Uranium Vanadium Zinc Tritium Gross Alpha Gross Beta Bismuth-214 Cesium-137.L' n Sample # Date Matrix (mg/L) (mg/L) (mg/L) (pCi/L)d (pCi/L) (pCi/L) (pCi/L) (pCi/L)

HC-3 PSCOO03 11/5/96 Cuttings N/A N/A N/A N/A N/A N/A NOt pCi/g e 0.18 (NO) pCi/gHC-3 PSWOOO08 11/14/96 Groundwater N/A N/A N/A -372 163 39.9 NO 7.15(NO)HC-3 PSFOOO05 11/12/96 Sump N/A N/A N/A -30 17.5 6.62 NO NO


bNot Analyzed

CReported value is below the detection limit.



fNot detected

0'1Itvw


(Page 3 of 3)

Table 6-5e

Sample Sample Lead-212 Lead-214 Potassium-40 Thallium-208 Thorium-234Location Sample # Date Matrix (pCi/L) (pCi/L) (pCi/L) (pCi/L) (pCi/L)

HC-3 PSCOO03 11/5/96 Cuttings 0.31 pCi/g 0.70 pCi/g 41.7 pCi/g 0.23 pCi/g NO pCi/gHC-3 PSWOOO08 11/14/96 Groundwater NO NO NO NO 75.5HC-3 PSFOOO05 11/12/96 Sump NO NO NO NO NO


bNot Analyzed

CReported value is below the detection limit.



fNot detected

7-1


Well HC-4 was drilled to a depth of 397.15 m (1,303.0 ft) between October 20, 1996, and

October 25, 1996. Five days were spent drilling and completing the installation of this well. Note

that Figures 7-1 through 7-10, cited in the following text, are located at the end of this section.



equipment was subjected to a radiological screening prior to mobilization to the drill site.

A 30.48-cm (12.0-in.) hole for the surface conductor was drilled using reverse air rotary reverse

circulation techniques and a 30.48-cm (12-in.) downhole percussion hammer to a depth of

31.39 m (103 ft) bgs. A 21.91-cm (8.625-in.) carbon steel casing was installed in this hole and

cemented to the surface using Type II cement without the requested 2 percent calcium chloride

additive. The lack of calcium chloride resulted in an estimated ten additional hours waiting for the

cement to cure.

The main hole was drilled from below the casing point to a TD of 397.15 m (1,303.0 ft) bgs using

a 20.32-cm (8.0-in.) percussion hammer button bit and air rotary reverse circulation techniques.

Drilling progressed smoothly during the advance of the main hole. Rates of penetration were

high, ranging from 1.64 to 4.26 minutes per meter (0.5 to 1.3 minutes per foot). Some short

delays to the drilling progress resulted from leaks/washouts of the discharge hose or cyclone;

repairs were made quickly; and drilling resumed. Figure 7-1 provides a summary of drilling

parameters for the well. All figures and tables, cited in the text, are located at the end of this

section.

Upon completion of drilling operations, the well was circulated for a short period of time. The

drill pipe was then tripped out of the hole to a depth of 365.76 m (1,200.0 ft). After waiting for a

period of one hour, the drilling assembly was tripped into the hole to a depth of 397.15 m

(1,303.0 ft) to check for fill. No fill was encountered. The drilling assembly was then pulled from

the borehole in preparation for geophysical logging.

Geophysical logging commenced on October 23, 1996, and was completed on October 24, 1996.

Logging proceeded smoothly with all geophysical logging runs conducted to a depth of 394.41 m

7-2

(1,294.0 ft). The downhole video was completed to a depth of 317.91 m (1,043.0 ft); logging

was not continued below this depth due to the turbidity of the fluid in the borehole.

7.1 Well HC-4 GeologyWell HC-4 encountered a fractured, coarse-grained biotite granite of Cretaceous age throughout

the drilled interval. Three significant fault/fracture zones were encountered in the well. The first

was located between 134.11 to 146.30 m (440.0 to 480.0 ft), apparently related to the occurrence

of an aplite dike. A second, broader fracture zone was encountered in the approximate interval of

243.84 to 274.32 m (800.0 to 900.0 ft); granitic rocks within this zone were also hydrothermally

altered with the development of some clays and pervasive chloritization. This alteration

assemblage is typical of those recognized along fracture and fault zones intruded by Tertiary-aged

andesite dikes; however, no andesite was noted during the collection of cuttings during drilling

operations. A lithologic log is provided as Figure 7-2.

7.2 Well HC-4 HydrologySeveral elements of hydrologic importance were monitored during and after the completion of

Well HC-4. During drilling operations, two monitoring parameters were consistently compared:

the volume of drilling fluids (water/foam) injected to facilitate drilling and volume of fluid

produced as discharge to the surface during the same time. Figure 7-3 illustrates the relationships

between injected drilling fluids and drilling fluid produced at the surface.

In addition to these volumetric measurements, all drilling fluids injected into the borehole were

tagged with a tracer solution of LiBr. The concentration of LiBr in solution was monitored on a

regular basis to estimate groundwater production within the borehole. Table 7-1 lists LiBr

concentrations recorded in produced fluids.

Water production from the well was minimal; monitoring data and water-level recovery data

suggest the well was capable of producing approximately 2.8 to 3.8 L/min (0.75 to 1.0 gpm).

During several instances, the well was capable of intermittent production on the order of

11.4 to 18.8 L/min (3.0 to 5.0 gpm). These somewhat higher readings suggest groundwater

production from perched water zones along fault or fracture zones. These zones were of limited

impact as their storage capacities were generally small, and as they were exhausted, their

contribution of water to the well bore decreased.


completion using transducers set by DRI. The static water level for Well HC-4 is approximately

7-3

317.20 m (1,040.0 ft) bgs. Table 7-2 provides water levels obtained for the term of IT

involvement in PSA field work.

7.3 Well HC-4 Geophysical SurveysUpon completion of drilling to the TD of 397.15 m (1,303.0 ft) and after a short session of

well development, a suite of downhole geophysical surveys was run within the borehole.

Geophysical logging operations were conducted over the period of two days on October 23,

1996, and October 24, 1996. No operational problems were encountered.

Table 7-3 provides a summary of the geophysical logs run for the well and the corresponding

logged intervals. Additional, specialized logging was performed by DRI as part of their scientific

work scope. Figures 7-4 to 7-7 provide condensed illustrations of log traces for Well HC-4.

Deviation surveys conducted within the casing and the open borehole indicate the borehole is

deviated 7.7 degrees vertically in a northeast direction. The deviation of the hole placed the

bottom of the hole 32.16 m (105.5 ft) northeast of the collar and resulted in a true vertical depth

of 392.65 m (1,288.23 ft) bgs.



(DOE/NV, 1996c). Regular radiologic monitoring of discharged drilling effluents, including both

fluids and solids, was conducted by Bechtel Nevada radiation control technicians.

Samples for further on-site lab analysis were screened using hand held instruments at the time of

sample collection. Effluents were further analyzed for tritium and other radionuclides using on-

site laboratory monitoring equipment. Tritium activities from fluid and swiped samples were

recorded using a Packard Liquid Scintillation instrument. Other radionuculides were analyzed

using Canberra gamma spectroscopy instrumentation.

Well HC-4 drilling effluents were found to contain only natural background levels of tritium and

other radionuculides based on results of field monitoring. Figure 7-8 provides a profile of tritium

encountered from fluids generated during drilling.

Radiologic monitoring of Century Geophysical’s downhole geophysical logging tools detected an

elevated alpha count on their Spectral Gamma Ray tool after being removed from the borehole.

7-4

The tool was swiped again to confirm initial readings; the second readings were approximately 30

percent of initial readings. The rapid dissipation of activity indicated that readings could be

attributed to naturally occurring radon gases.

7.5 Well HC-4 ConstructionConstruction of Well HC-4 included the drilling of a 30.48-cm (12.0-in.) surface borehole to a

depth of 31.39 m (103.0 ft). Conductor casing comprised of 21.91-cm (8.625-in.) carbon steel

was installed in the 30.48-cm (12.0-in.) hole. Bow-type centralizers were placed approximately

1.52 m (5.0 ft) from the bottom of the casing and then centered at the surface. The conductor

casing was cemented to the surface using Type II neat cement without the 2 percent calcium

chloride as an additive.

Intermediate 13.97-cm (5.50-in.) carbon steel casing was installed in the completed 20.32-cm

(8-in.) borehole and set at a depth of 308.76 m (1,013.0 ft) bgs. Intermediate casing was installed

without specified centralizers or cement baskets due to adverse borehole conditions. Intermediate

casing was suspended on landing straps secured to the surface conductor casing. Figure 7-9

provides a schematic view of the final completion. The surface completion for the well head is

illustrated in Figure 7-10.

7.6 Well HC-4 SamplingSamples for analytical analysis were collected from fluids and cuttings as specified in the

Field Instructions for Project Shoal Area Surface and Subsurface Investigation, Churchill

County, Nevada (IT, 1996) and the FMP for the Project Shoal Area Offsites Subproject


Tables 7-4 and 7-5.


WaterProduction

5000

WOB(psi)

II

60 -200004000


Project No. 764044.03.07.00.00

Rotary ITorque I

(pSI) I2000 0120120

WaterInjection

(gpm)

100

Rate ofPenetration

(rnirvtt)

o

r

IWater

, Level

!Logged.By: Century Geophysics/DRI

IDrilling Co.: Beylik Drilling Services

IDrilling Method: Air Rotary/ Reverse Circulation

ISurface Elevalion:5260.69

IHole No. HC-4

7-5

Shoal ProjectChurchill Co NevadaProject No. J64044.03.07.00.00IT Corporation Offsites ProjectLithologic Descriptions by Well

WEll ID. HC-4 GRANITE 0.00 200.00 jaw 10/21/96G~anite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite xIs <1.0 mm altering locally to chloritealso noted as irregular masses to S mm (10%), groundmass comprised of mediumto coarse grained clear to translucent gray quartz, (30%), milky white topale pink gray kspar (40%), xl to ISmm. also noted as porphyritic xl ofmicrocline xl up to ISmm (20%), minor anhedral xl of plagioclase «10%)Accessory magnetite as isolated blebs and anhed xIs < Imm. Spotty fracturestains of ocherous yellow orange limonite through out interval.

WEll ID. HC-4 GRANITE 200.00 450.00 jaw 10/21/96G~anite, mixed grayish white to creamy buff white, pervasive yellow toyellow staining. porphyritic, abundant black to greenish black biotite xIs<1.0 mm altering locally to chlorite also noted as irregular masses to S mm(20%), groundmass comprised of medium to coarse grained clear to translucentg~ay quartz, (20%), milky white to pale pink gray kspar (40%), xl to ISmm.also noted as porphyritic xl of microcline xl up to ISmm (20%), minora~edral xl of plagioclase «10%) Accessory magnetite as isolated blebs andar~ed xIs < lmm.

WEll ID. HC-4 APLITE 450.00 490.00 jaw 10/21/96Aplite, cceamy gray white to white, principally massive grayish white ksparwith prominant cleavage surfaces, (70%) the remainder of the rock appears tobe comprised of blebs of transl gray qtz, mostly anhed. Minor black to greenblack biotite (possible cross contamination from up hole. Interval 460-470:s contains much pinkish clay. Cuttings and clay suggest a fault fracturezone.

WEll ID. HC-4 GRANITE 490.00 600.00 jaw 10/21/96G~anite, mixed grayish white to creamy buff white, strong pervasive yellowto yellow staining. porphyritic, abundant black to greenish black biotitexIs <1.0 mm altering locally to chlorite also noted as irregular masses to S~~ (20%), g~oundmass comprised of medium to coarse grained clear tot.::-anslucent g.::-ay quartz, (20%), milky white to pale pink gray kspar (40%), xlto ISmm. also noted as porphyritic xl of microcline xl up to ISmm (20%),mino~ anhed~al xl of plagioclase «10%) Accessory magnetite as isolatedblebs and anhed xIs < lmm.

WEll ID. HC-4Andesite, Darkphenocrysts ofaphanitic to a

ANDESITE 600.00 610.00 jaw 10/21/96olive green to dark grayish green, porphryritic, blackpyroxene?? possible olivine .2-1.0 mm, groundmass isvery fine grained sandy matrix with no identifiable minerals.

~~ll ID. HC-4 GRANITE 610.00 660.00 jaw 10/21/96G~anite, mottled gcayish white to creamy buff white, porphyritic, abundanttlack to g~eenish black biotite xIs <1.0 mm altering locally to chloritealso neted as irregular masses to S mm (10%), groundmass comprised of mediumto coar s e grained clear to translucent gray quartz, (30%), milky white topale pink gray kspac (40%), xl to ISmm. also noted as porphyritic xl offfiicrocline xl up to ISmm (20%), minor anhedral xl of plagioclase «10%)A~~essory magnetite as isolated blebs and anhed xIs < Imm. Good cuttingscr....ality 3-10mm.

WEll ID. HC-4 ANDESITE 660.00 680.00 jaw 10/21/96;~desite, Dack olive green to dark grayish green, porphryritic, blackphenocrys~s of pyroxene?? possible olivine .2-1.0 mm, groundmass isa?ha~itic to a very fine grained sandy matrix with no identifiable minerals.

~~ll ID. HC-4 GRANITE 680.00 800.00 jaw 10/21/96G~anite, ffiixed gcayish white to creamy buff white, strong pervasive yellowto yellow staining. porphyritic, abundant black to greenish black biotitexls <1.0 mm altering locally to chlorite also noted as irregular masses to Sr.~ (20%), gcoundmass comprised of medium to coarse grained clear totcanslucent gray qJactz, (20%), milky white to pale pink gray kspar (40%), xlt ISmm. also noted as porphyritic xl of microcline xl up to ISmm (20%),~ no~ ar~ed~al xl of plagioclase «10%) Accessory magnetite as isolatedb ebs and anhed xIs < Imm.


(Page 1 of 2)

7-6

WEll ID. HC-4 GRANITE 800.00 900.00 jaw 10/21/96Alte"ed G"anite, f"acture fault zone with mixed cutting of granite andandesite as noted in previous intervals. Abundant clay as pinkish to pinkishg"ey balls and i"regular masses. Very likely fault zone that has beenfllled/intruded by thin dikes or bodies of andesite.

WEll ID. HC-4 GRANITE 900.00 1050.00 jaw 10/21/96Granite, mixed grayish white to creamy buff white, locally strong pervasi;eyellow to yellow staining. porphyritic, abundant black to greenish blackbiotite xIs <1.0 mm altering locally to chlorite also noted as irregularmasses to 5 mm (20%), groundmass comprised of medium to coarse grained clearto translucent gray quartz, (20%), milky white to pale pink gray kspar (40%),xl to lSmm. also noted as porphyritic xl of microcline xl up to lSmm (20%),minor anhedral xl of plagioclase «10%) Accessory magnetite as isolatedblebs and anhed xIs < 1mm.

WEll ID. HC-4 GRANITE 1050.00 1250.00 jaw 10/21/96Granite, mixed grayish white to creamy yellowish white, locally strongpervasive yellow to yellow staining. porphyritic, abundant black to greenishblack biotite xIs <1.0 mm altering locally to chlorite also noted asirregular masses to 5 mm (20%), groundmass comprised of medium to coarsegrained clear to translucent gray quartz, (20%), milky white to pale pinkgray kspar (40%), xl to lSmm. also noted as porphyritic xl of microcline xlup to lSmm (20%), minor anhedral xl of plagioclase «10%) Accessorymagnetite as isolated blebs and anhed xIs < 1mm. Large cuttings up to lSmm

WEll ID. HC-4 GRANITE 1250.00 1303.00 jaw 10/21/96Granite, mottled grayish white to creamy buff white, porphyritic, abundantblack to greenish black biotite xIs <1.0 mm also noted as irregular massesto 5 mm (10%), groundmass comprised of medium to coarse grained clear totranslucent gray quartz, (30%), milky white to pale pink gray kspar (40%), xlto lSmm. also noted as porphyritic xl of microcline xl up to lSmm (20%),minor anhedral xl of plagioclase «10%) Accessory magnetite as isolatedblebs and anhed xIs < 1mm.


(Page 2 of 2)

7-7

6.2 001··············,··············1·6.G- -00·········· .

60 00

6:0·:&0

.n


······m····~·~·

:::=- 4.5

•

! Date Beoan:10/20/96

!Date Finished: 10/25/96

0.0

150

·f············ ..·····~&g·

!-.··-------t--.-!

0.0....... -00··

0.0

0.0.......... -00·····

0.0

00.............. -0.0········· ; .0.0

0:0.............. -00··

00

0:0............. -00····

00

··········f-········'····4U·····················f-·····-rn·

.........+ r!f ' .

0:0

.+&0 >I1!

.......................................~~&O .

0:0. -0.0······0.0

~7500

.......:;a~ ....(5.6

·······················~r~··

~.~...

...........~.4:0.. ~.: .

............In···16.0

1···············:···········~..--i,U ... ············11"0

I · ,..·· <.,~~y .T52

I··············;····~:.;.~'rH .j .

1············;········,/'4:..·~12...."\15.8

6:01··············,·····/.!·····.7.

5-c:-6·G-·:

14:01···············,·····+Its .

6:01···············,···············I-6.G-····

6.0

1 5 61 , llt~·

1 : , l..'-'i7"?~ii~···· ..•............ ·f··· ;. ,.: ~.+OG- .

1................•............1:""':%8...'(5~

I···············:··············\it~ .8"8.60 00

1 , I"tk· ····· : ·········f ~ ~·8.G

1···············:············.. ·'···d·····?2..-'·!U ····,·f ,... ~":.T.1:.,..._.._.._.-'--:="·+O.G-··

1 : 0~.~~... •~8~:~ 2u •

r··········,············· I~l. . zl60 00

'~5 ~Of··········,···············f-6.G- -0.0··

§.Q 00

6:0 00I··········· •.. it-6.~ .. . -00··6~ 00

:5.8 0:01·············,···············I-6.G-·· ......•.......................... -0.0········· .

60 00

, , ;..~I.H ·Z8·········· .[fo 00

F IDLE L

I Geoloov and Water Production Summary

Northing:1619560.70 IEastina:557188.00

I

i Lithology Rock ~·~:r Water Injection RateType (gpm)

o

RockUnit

900

700

800

500

600

400

100

300

200

1000

1200

1100


IHole No.:HC-4



Drilling Method: Air Rotary/ Reverse Circulation Figure 7-3



I19

I

I Spectra Gamma RayThorium

(cps)


IDate Began: 10/20/96


(cps)

:557188.00Litholog

I

-1 r v v KG vv20 -j ..... vvv vvr v v

vv~40 ~

""';vv V VVil'vv VV

60 J.... vv ..... VV:'vv VV

80 j 20-'rVvVv~ "'","'vi100 j

i-v.....v",'Q :""':VJ..J~vvvv'<J~ -{.vvvv'<J vVvVj

120 -] "'vv40 -{.

Vv

Vv1 '-vv

140 -j Jvv v

t~:~:j160 -j v v V '01-{.v.....vvvi

180 1 KVv! rvv60 -;.vvvvv vv

'001 IV v ..... vVv"'J220 "Yvv vVv"'JIVYV

1o'VV'\! vvl240 -t.vvvv~ vv ...

~VVI

260 80-+"'",""'.....1 v v 1~vvvvi

280 J -vv.....v.....'<J~vv

!VVl vv

.300 ~~vv "'vvivvv

r~~~l-"vv

320 1""'''"1100 Iv""'",""'.....340 j ..... vv-..;

~<v:!VVVI360 tv:v:~

vv

380 ~vv

:v""1 vvvvvv

400 -i 120ivvvvltv"'",""'VI

420 1 l .....vvv.....

'-.fvv

I''''''''"1440 -] -l.....vvvvAPLiTE··

460 j IoOVV\i

140 1 ""' ''" 1' vv480 l.vvvvl

'vv v GRANiTE500 -1

-rvvvv1 (vVv~vv520 ~

"vv vv

540160--Jrv.....v....."",

'OTV ~vvvv""'vvv v v J

560 j!"vv : iVy .....~v v v 'v v

580 ~il'VV :' t:-"vvvvJ-:vvv:!"'vv t1vv.....""'J "ANDEsiTE180--'vvv:

600 i -KG n: D~~.620 -l -{.vvvv,;,

~vvGRANiTE·

vv'\l vv640 1 -{.VvVvVI !"'vv

200 -lv v,;,vv .·ANDEsiTE·

660 1vv

680 -1~vvvvv

OW~vv

700 ~vv GRANITE··Ivv .....

C--v vrvv vv

720 220 i:.....:.....: tyvVVv

740 ~ .,..vv~ rv vv~v v v vv

760 '

r~~lvv

780 ~vv

~vv VVIV""'''''' VV

800 -l 240 -t v v vvvvv rv.....v..... '---GRANITE'-~vv

820 J :vvv

VVl~vv

~:::: ALTERED840 1

IvvV'-"VV!VVVI

260-Y v v '\l ~vv860 ~ 1vvvvl

vv

880!vVV' ~v~v~.YvvIVVV'

'v V ~900 -1 .Y V V

~~~""."'VVI'vv

:~~280ivvv

lvvvvv'v V""vvv

960 -fvVVVy ~~~1980 1 .vv

1000 ~ 300 1.vV'vV''<J vvvv

jvvl.vv V'v

v l vv

tvvvv~vv

1020 -j vvvv

JV

1040~ jVVVI vv320 ,vvvv~ "'vv F UID LE

1060, '-vv rv~v~., i-vvvv""<J vv1080 -.1 iJ-J-

1vvvv

1100 ~ vv'-vv vv

1120 340~vVV r' vv vv~vvv vv

1140 ~ 'v v VV~iVV V vv

1160'v v vv

-I, v v v vvr v v vv1180 -1 360l'Vvvv1 vv

1200 jVV

-i,vvv..."v vv

t v vJV v"1 vv

1220 j ir.r.: ~vvvv~vv~ vv

1240 vvv vv3801vVvVv t v v

1260 j Tvvv.....v ~vvvv1280 -j vv

..... vv vv-J.vvv vv

vv vv

Depth i. Depth '. Strata 'I Rock(feet) ,meters) Unit


Hole No.:HC-4

ILoggeq By: Century Geophysics/DRI IT CORPORATIONDrilling Co.: Beylik Drilling Services . Project ShoalIDrilling Method: Air Rotary/ Reverse Circulation Figure 7-4 Project No. 764044.03.07.00.00


Geology and Geophysical Log Summary'Hole NO.:HC-4

Surface Elevation:5260,69Depth lDepth :"" Strata Rock(feet) Imeters) Unit

i i

Lithology

, I

Northing: 1619560,70

Rock Water IType Level

o

Caliper(inches)

iEasting:5571 66.00Resistivity(ohmlm)

200

:Date Beqan: 10/20/96

Date Finished 10/25/96Neutron

(cps)

500 0

I

2000(1

i

1020

1040

1060

1080

~100

1120

1140

1160

1180

1200

1220

1240

1260

1280

1300

;;~;>

<)

(

?

:Logged.By: Century Geophysics/DRI IT CORPORATION I:Drilling Co.: Beylik Drilling Services • Project Shoal I!Drilling Method: Air Rotary/ Reverse Circulation Figure 7-5 Project No. 764044.03.07.00.00 ----l


Hole NO.:HC-4 Geology and Geophysical Log Summary Date Began:10/20/96

iJ

I

=

IDensity

(gmlcm3)

Date Finished:1 0/25/96

10000

•

Gamma Ray(api)

~~

"-----i-----'------c-----:---,.---+-----'-,...=lr~----'-"_____1

-., ~-

....

l

200

'Eastino:55718800

5;;::_

-~-

:0=:---.;::::>!" •

Caliper(inches)

o

f·····, ....;....·:.....~\oc:i=; .....,.....c.... ·,··t..·

f.... -;.... ·,..·..,....+·.. ·,· ..·,....·,····,·····,····t·····

f.... ·:.... ·,..·..;..·+ .. ··:· ....,.... ·, ....·;.. ·..:..·..t ....

~

..... '"-:-- It:.~--'---'---j

.:;; ~

I·.. ··:· ..·..:..·.. ,··..-f- :· , ·, ·: ·t ~~., , : , , " : , + , , , , <~., Eoc·,.· ;· ; ·1

~

.:;;;iiI "

~1·..··:·····,·····,···+·..·:· , ·,·..··;· :..·..1 'Ij~.; : : ; : , : : + : ; : ; , .0:;

j

5L'Iu,o ""'1'- ....:.....,... ·,····r·····,·.. .... ···:·· ...;.....;.... t..~ rI

I

Rock I Wale,Type I Level

I

Northing:1619560.70Lithology

I i

I !

KG800 1,820 1840 -j

860~880 :

900~920 -j940~960,980.:1,

1000 -1020 11040 11060 -i.,1080 j1100 -i1'20 ~1140 -]

1160 -j1180 ~

1200 -j1220 -:I1240 J1260 ...;.,1280 -1

j

Depth I

r

Depth '. Strata i Rock(feet) meters) 'Un,t

ii I

:Surface Elevation:5260.69


Figure 7-6 Project No. 764044.03.07.00.00


Logged.By: Century Geophyslcs/DRI


Drilling Method: Air Rotaryl Reverse Circulation

ii

25'

:

LiBr(mgtl)

)

. :

IDate Began:10/20/96

8000

IDate Finished:10/25/96

EC(umos)

10600

•

!Eastina:557188.00

Temperature(F)

7

••

Rock IWaterIType Level

I 168

IGeoloov and Geophysical Loa Summary

!Northing:161956070ithology

I

!

1180

1120

1160

1240

1200

1060

1140

1100

1300

1220

1080

1040

1280

1260

1020

ISurface EleYation:5260.69

IHole NO.:HC-4

I

Depth Depth i Strata I Rock(feet) meterSj I Unit

I



Drilling Method: Air Rotary/ Reverse Circulation

Figure 7-7HC-4 Geophysical Log Traces of Chemtool


Project No. 764044.03.07.00.00

7-12

,

8000

IDate secan. 10/20/96


Tritium in Fluids(pCi/L)

iEastinQ:557188.00

o

IWaterLevel

i Geology and Tritium in Fluids

INorthina:1619560.70

ILithology Rock

I Type

iI

RockUnit

Depth ! Depth I Strata(feet) I (meters)

I i

Surface Elevation 5260.69

~-------------'-----------------------------r-----------,

iHole No :HC-4

..·f··· ..·..·..· · · ·;- · · · · · ·, · · ·..· ;- :··· ·..·..· ·· ·· ··1

.......................................................... I


Proiect No. 764044.03.07.00.00

:

<,........ .>.. : · ;-· · · ·..· ·..·.. ·: .. ·· ·..· · · ··c , I

..· 1 · ·· ·.. ·: · · ; , · ·.. , · · ··· · · 1

\\1·· · ··; · · · · , + :..................... 1

\

\

/

......... \

... \ ; , · :· · ·: · ·..· ·1

....... \ ,.... • ,................... 1

.... (

)

~ .

I=1·· ..· · ·; ·· · ·· ..·.., ·..· ·..·..·..c · · ·..· ·..·..·· ..· ·· j

"'""., : , ' ,.......................... 1

-----=-=; , , ,....................... 1

"'..."<; , : ··..· ·; · · ·, .. · · · .. ·1

!

F UIDlEVEL

Logged.. By: Century ~eOPhySiCS/DRI Fig ure 7-8Drtlling Co.: Beylik Dnlling Services HC 4 T " . C . D" D "II"Drilling Method: Air Rotaryl Reverse Circulation .._..:.__....E'_!'~m oncentratlons ._~~I':'~_.. ~~ ..~!!

7-13

iHole NO.:HC-4 iGeology and Well Construction Summary iDate Began:10/20/96

:SurfaceElevalion:5260.69 iNorthina:1619560.70 IEaslina:557188.00 IDate Finished:10/25/96

IDepth 1 Depth Istrat. i Rock Lith Rock ! Waler I Caliper

IWell Construction

I(feet) I (meters) I I Unit Type I Level I (inches)

I i I I 201I I 0

Y;"vJ KG ;""v GRANITE ;;:."'; ~-~20 ~ v t ---'1_- ~ BOREHOLE 12.0" 0-103.0Vv~ ..... v:

::.-~1-vv '1~ v 1

.i-> ---- ~--.:40~vJ ::.-~

:~ ~ lVv

'1......... - ...._.~

~-=20 vv'1"vd ::-_~ .---vv'1 'v

::-_~ \:CEMENT""100 1-vv'1 ~ v 1 .. --··1_-w'11 -ivVj~~'1::1 rv~ :

401'vv

""'"-l V Vi 'v'160

!'v, l'v'1-j..vv'1t'v'1 ' CASING 8.625" 0-103.0

180 J v '1

60+~~j Y.....'1200

rvj220 tv

v.

240 ~yv ~

~~EII

·fv'1260 80 vv'q 'v

""-vvv"1 'v280 ~Vy1 ·j.,vv':1

II~Ol .j.,vv'1 r~j320 100-i.-v

....."q340

±~~jrvl

II.... '1

360J,vv ~~'1

~j ''"f~~r''''

II~vJ400 ""vvl

II420 ::1 l,VJ

rv :

MOl 140-(v'1 ~"'APLiTE'" "",:460 v ':1 P-

I480 tv~'1 ~"-GRANiTE'500 }Vv~ CASING 5.5" 0-1013.0

IIvvv~

tvj520 N'¥

1601-vviON l,vJ

540 J tv..... rvl

IIt'v'1560 I t,vv'1 : ....VI :;;:-

580 1 lV~:

~rvx ANDEsiTE

,I600 --j 180~ ---.+._--

620 -l v, KG "GRANITE'IiI

640 -j

~,,':vi

v~

~ANDE'siTE' 'I

660 -I 200 ="I.I

680 ) ON-..-.

~ BOREHOLE 8.0" 103.0-1303.0

I{vv-.:(l.-vV! GRANiTE' ---- f--

700 'vdv ~. v720 j 220 tVv'1 r v

I740 v....."1 \ rvJrvJ

I.j.,v VI . I760 --I v,

I

Iv'" .vll -v v "'i "".....,

780 1 240..(..vv'q .vJtvJ-...... ==

800 J fV1KGv,• va GRANITE ~vv:

820 v, v ALTERED.,..vv'1 rv

Ii840 IV ........ rvl

Ii8601 260 ...... V~ .... ~!::j rvt'v

880 '1 ;.,..~

900 J ~~j 'GRANITE"920 280 I ~Vj tVJ940 1 1v

vl,vJ.r v ~

}vv'1 .vl960'" r-)1.,

i V V1

tj~j300 "'vv'l

1000 1~~~ 'vv1020 (,v V1040 iV~~ rv =v

UID LEVI L320 v'" 'v1060 vVJ tv

.... :.....

r v ~ .F-1080 -,

r~1 L·1 ~~v1 e-1100~

340 {v~'1 'v1120 ""'"1140 l -j..vv '1 tvl

J v 'q tv'11160 1 JvvVl r vVi

{V' r'v1 I.-1180 ~ 360 vv':.1

~~~~- / FILL 1294.0-1303.0I

yVV~1200

1220 1{-vv'::l

~

1240 j tVv'1 t~

38°IVv'1 ...Lvv~ rV1260 ~ r-vJ

!1280 .j,.~~1 t--'(,I rv . ---..... _~ .. '-~"'."'.'" . .......... ........ ~.. -

Logged. By: CenturyGeophysicslDRIFigure 7-9

IT CORPORATIONDrilling Co.: BeylikDrillingServices Project ShoalDrilling Method Air Rotary/ Reverse Circula.!iO!!....HC-4 Subsurface Well Completion Diagram Project No. 764044.03.07.00.00

7-14



Well Pad


I•1.22 m

(48 in) • IProtective Casing

32.38-cm (12 3/4 in) od0.32-cm (.125 in) wall

Surface Casing

21.91-cm (8 5/8 in) od0.48-cm (.188 in) wall

Intermediate Casing

1397-cm (5 1/2 in) od12.70-cm (5.0 in) id




60,96-cm (24 in) diameter pad

pl.mJfie.....

Profile Vi~w


~ ~ Lockable Lido

.~cor-- 0 32,38-cm (12 3/4 in)od Protective Casing,..: -,;

Cap 13.97-cm (5 1/2 in) od ThreadedE .~ur-- 0

N Lri~

Intermediate Casing with 13,97-cm

E (51/2 in) od Threaded Couplingu .~

'{.!. LOr--,..: cD

~


E .~0

o-c LOC") N.,.; Lri

Q <~

.s IE

LO

IIIo

Nr--

I Concrete PadLO .,.;en I -'I-- .. .. I '", .:... ', :".. ", .Ground Surface E : .',=.: ~.~ ~:. : •... :a.... : e-,o .s A' :'J".', I

-', .:.. " :'.. ',Elevation "'" 0 .v : .. .:."-:' I:~:.:~/~.~:.~.

N:'J,,",1603.46 m Lri cD A' .' '

~ ':':,' :...... :. I :!'-:.: t-:.:....(5260,69 ft)A' 'A' .. " .

It>..\\Y!'A' ovc« I I ~ v ,. '11.\ \YII.\\Yf),\\Y 1\\\". ,.

i< - - ,{- / .... - /

~~Surface Casing

Clamp/Landing Plate

;g;ro

No~l- ---...... ......

7-15



mm/dd/yy (24 hrs) (ft) (mg/L) (Co) Sample Source Analysis By10/22/96 0630 NA 20.3 24.0 aces (20 mg/L) R. Peterson10/22/96 0540 NA 28.7 19.5 Water Truck R. Peterson10/22/96 0540 675 27.1 22.0 Discharge Line (DL) R. Peterson10/22/96 0605 NA 26.7 20.9 WT R. Peterson10/22/96 0605 690 25.6 22.6 DL R. Peterson10/22/96 1100 803 27.5 22.4 DL JWurtz10/22/96 1105 NA 19.9 25.3 cccs (20 mg/L) JWurtz10/22/96 1106 NA 27.7 21.7 WT JWurtz10/22/96 1108 823 27.4 21.4 DL JWurtz10/22/96 1135 NA 21.9 24.8 WT JWurtz10/22/96 1145 843 23.2 25.1 DL JWurtz10/22/96 1120 863 20.4 25.3 DL JWurtz10/22/96 1320 NA 20.0 25.0 occs (20 mg/L) JWurtz10/22/96 1220 875 22.0 25.1 DL JWurtz10/22/96 1300 900 22.0 25.1 DL JWurtz10/22/96 1335 NA 29.0 25.4 WT JWurtz10/22/96 1330 920 35.4 25.2 DL JWurtz10/22/96 1435 NA 27.7 25.2 WT JWurtz10/22/96 1530 NA 20.3 25.1 occs (20 mg/L) JWurtz10/22/96 1430 940 32.2 25.5 DL JWurtz10/22/96 1530 960 30.3 25.5 DL JWurtz10/22/96 1630 980 28.8 25.3 DL JWurtz10/22/96 1715 NA 28.5 25.6 WT JWurtz10/22/96 1715 1000 29.5 25.2 DL JWurtz10/22/96 2100 NA 19.9 25.5 occs (20 mg/L) AM.Welcher10/22/96 1810 1025 30.3 25.0 DL AM.Welcher10/22/96 1830 1043 31.2 25.2 DL AMWelcher10/22/96 2030 NA 34.6 25.0 WT AM.Welcher10/22/96 2030 1065 28.3 25.4 DL A.MWelcher10/22/96 2105 1085 30.0 25.4 DL A.M.Welcher10/22/96 2350 NA 20.0 25.3 occs (20 mg/L) AMWelcher10/22/96 2130 NA 33.1 25.3 WT A.MWelcher10/22/96 2130 1105 23.1 25.3 DL A.MWelcher10/22/96 2235 1125 30.6 25.3 DL A.MWelcher10/22/96 2315 1145 30.7 25.3 DL A.M.Welcher10/23/96 0000 1165 29.1 25.3 DL AMWelcher10/23/96 0010 NA 19.8 25.3 occs (20 mg/L) AMWelcher10/23/96 0345 NA 20.5 26.5 occs (20 mg/L) R. Peterson10/23/96 0050 1185 28.9 26.0 DL R. Peterson10/23/96 0225 1200 30.6 26.1 DL R. Peterson10/23/96 0325 NA 33.5 25.8 WT R. Peterson10/23/96 0325 1205 28.9 26.0 DL R. Peterson10/23/96 0425 1190 24.7 25.7 DL A.MWelcher10/23/96 0600 NA 19.9 26.1 occs (20 mg/L) A.M.Welcher10/23/96 0500 1205 24.7 26.2 DL J. Wurtz10/23/96 0600 1223 36.4 26.1 DL J. Wurtz10/23/96 0700 1243 35.5 26.0 DL J. Wurtz10/23/96 0800 1243 33.6 25.8 DL J. Wurtz10/23/96 0900 1263 30.8 26.0 DL J. Wurtz10/23/96 1130 NA 20.2 26.0 occs (20 mg/L) J. Wurtz10/23/96 0920 NA 30.3 26.1 WT J. Wurtz10/23/96 1000 1283 21.0 24.3 DL P. Gallo10/23/96 1000 NA 46.4 22.5 WT P. Gallo10/23/96 1220 NA 34.9 22.0 WT P. Gallo10/23/96 1220 1295 40.5 23.9 DL P. Gallo10/23/96 1315 NA 39.0 26.0 WT J. Saavedra10/23/96 1315 1303 38.8 25.1 DL J. Saavedra

7-16

.......:JI......

.......:J


Depth to ElevationWell Name Date Fluid (tt) (tt) Notes

HC-4 23-0ct-96 1045.8 4214.89 Water level obtained immediately after development by IT using a solinst tape down drill pipe.

HC-4 24-0ct-96 1040 4220.69 Fluid level picked off Century Geophysical neutron log, measured from GL.

HC-4 24-0ct-96 1040 4220.69 Fluid level obtained from Century Geophysical temperature log using a datum of GL.

HC-4 24-0ct-96 1044.6 4216.09 Fluid level to ground surface. Measurement obtained by DRI using the Chemtool.

HC-4 01-Nov-96 1044.91 4215.78 DRI measurement of water level using downhole video camera.

HC-4 07-Nov-96 1041.96 4218.73 Water level was obtained by DRI using the EC Temperature tool. Meas. from GL.

HC-4 13-Nov-96 1040 4220.69 Approximate water level obtained with the DRI video camera. Measured from GL.

-....lI.......

00


Geophysical Date Log Bottom Log Top LoggingWell Name Log Logged (tt) (tt) Company





HC-4 Temperature 10/24/96 1294.40 0.00 Century GeophysicalHC-4 Acoustic Borehole Televiewer 10/24/96 1289.98 1034.94 Century GeophysicalHC-4 Chemtool 10/25/96 1295.00 1045.00 DRIHC-4 Downhole Video Camera 10/23/96 1043.00 0.00 DRI



Sample NumberDate

Location Sample Type Depth (ft)COCa

CommentsCollected Number


PSWOOO03 10/4/96 HC-1 Groundwater 920 519812 Groundwater sample from HC-1 Well Development...Fuli Lab QC

PSWOOO04 10/4/96 HC-1 Groundwater (dup) 920 519812 Duplicate of sample PSWOOO03

PSWOOO05 10/4/96 HC-1 Water (QC) NA 519812 Equipment Rinsate sample

PSWOOO06 10/4/96 HC-1 Water (QC) NA 519812 Field Blank sample

PSFOOO01 10/5/96 HC-1 Discharge Fluid NA 519816 Composite sample collected at HC-1 Sump #1

PCXOOO01 11/3/96 HC-1 2nd Discharge Fluid NA 519820 Additional fluids discharged into HC-1 Sump #1, 2nd composite sample collected.


PSWOOO07 10/21/96 HC-2 Groundwater 1173 519814 Groundwater sample from HC-2 Well Development.

PSFOOO03 10/20/96 HC-2 Discharge Fluid NA 522037 Composite sample collected at HC-2 Sump #1.


PSWOOO08 11/14/96 HC-3 Groundwater 1104 519823 Groundwater sample from HC-3 Well Develop. Waiting on results.

PSFOOO05 11/12/96 HC-3 Discharge Fluid NA 519824 Composite sample collected at HC-3, Sump #1.


PSWOOO09 11/7/96 HC-4 Groundwater 1130 519819 Groundwater sample from HC-4 using a discrete bailer.


'Chain of Custody

-....JI

No


(Page 1 of 3)

Table 7-5a

Sample Sample Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chromium

Location Sample # Date Matrix (mg/L)a (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-4 PSCOOO04 10/23/96 Cuttings N/Ab N/A N/A N/A N/A N/A N/A N/A N/AHC-4 PSWOOO09 11/7/96 Groundwater N/A N/A 0.0018 (NO)' 0.0557 N/A N/A 0.0006 (ND) N/A 0.0441HC-4 PSFOOO07 10/24/96 Sump N/A N/A 0.0101 0.67 N/A N/A 0.0006 (ND) N/A 0.0051

Table 7-5b

Sample Sample Cobalt Copper Iron Lead Lithium Magnesium Manganese Mercury Molybdenum

Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-4 PSCOOO04 10/23/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/A N/AHC-4 PSWOOO09 11/7/96 Groundwater N/A N/A N/A 0.0146 N/A N/A N/A 0.0001 (NO) N/AHC-4 PSFOOO07 10/24/96 Sump N/A N/A N/A 0.0103 N/A N/A N/A 0.0001 (NO) N/A


bNot Analyzed


dUnits in picoCuries per liter (pCi/L) unless otherwise noted


INot detected

-....)Itv


(Page 2 of 3)

Table 7-5c

Sample Sample Nickel Potassium Selenium Silicon Silver Sodium Strontium Thallium

Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

HC-4 PSCOOO04 10/23/96 Cuttings N/A N/A N/A N/A N/A N/A N/A N/AHC-4 PSWOOO09 11/7/96 Groundwater N/A N/A 0.0028 (NO) N/A 0.0015 (NO) N/A N/A N/AHC-4 PSFOOO07 10/24/96 Sump N/A N/A 0.0028 (NO) N/A 0.0015 (NO) N/A N/A N/A

Table 7-5d

Sample Sample Uranium Vanadium Zinc Tritium Gross Alpha Gross Beta Bismuth-214 Cesium-137

Location Sample # Date Matrix (mg/L) (mg/L) (mg/L) (pCi/L)d (pCi/L) (pCilL) (pCi/L) (pCi/L)

HC-4 PSCOOO04 10/23/96 Cuttings N/A N/A N/A N/A N/A N/A NOt pCi/ge 0.18 pCi/g (NO)HC-4 PSWOOO09 11/7/96 Groundwater N/A N/A N/A 643 48.9 22.8 NO 6.32 (NO)HC-4 PSFOOO07 10/24/96 Sump N/A N/A N/A 11 5.24 5.15 NO NO


bNot Analyzed

CReported value is below detection limit



'Not detected

-

-.....lItvtv


(Page 3 of 3)

Table 7-5e

Sample Sample Lead-212 Lead-214 Potassium-40 Radium-226Location Sample # Date Matrix (pCi/L) (pCi/L) (pCi/L) (pCi/L)

HC-4 PSCOOO04 10/23/96 Cuttings 0.32 pCi/g NO pCi/g 32.3 pCi/g NO pCi/gHC-4 PSWOOO09 11/7/96 Groundwater NO NO 70.3 NOHC-4 PSFOOO07 10/24/96 Sump NO NO NO NO

Table 7-5f

Sample Sample Radium-228 Thallium-208Location Sample # Date Matrix (pCi/L) (pCi/L)

HC-4 PSCOOO04 10/23/96 Cuttings NO pCi/g 0.17 pCi/gHC-4 PSWOOO09 11/7/96 Groundwater NO NOHC-4 PSFOOO07 10/24/96 Sump NO NO


bNot Analyzed




'Not detected

8-1

8.0 Fluid Management

8.1 Summary of Fluid ManagementFluid was managed during the Shoal Project through an FMP. This strategy provided guidance

for the management of fluids generated during well drilling and construction activities. The FMP

(DOE/NV, 1996c) used a fluid management decision strategy based on process knowledge and

verification of process knowledge through laboratory analyses and field screening methodologies.

One single-lined and one double-lined sump were constructed at each drill pad. The single-lined

sumps (Sump #1) were used to contain uncontaminated fluids. The double-lined sumps (Sump

#2) were built to contain contaminated fluids. The double-lined sumps were never used. Tritium

levels in the drilling fluids did not even approach the Nevada Drinking Water Standard (NDWS)

(NRS 445, 1996 and NAC 445A, 1996) of 20,000 picoCuries per liter (pCi/L). All fluids

generated during drilling of the four wells were analyzed for lead and tritium. Tritium was

monitored on an hourly basis, while lead was monitored every eight hours. Tritium was only

detected in background concentrations, and lead results were at nondetectable levels. A fluid

sample was collected from a sump and sent to an off-site laboratory for analysis at the completion

of drilling operations when fluid from downhole was no longer being discharged into the sump.

8.2 Source Water for DrillingSource water for drilling came from water supply Well HS-1, located east of the project site in

Fairview Valley. Water from Well HS-1 was sampled and submitted for analysis by Quanterra

Labs. The water from this well was found to be below threshold limits for analytes as defined in

the NDWS (NRS 445, 1996 and NAC 445A, 1996).

8.3 Sump ConstructionOne single-lined and one double-lined sump were constructed at each drill pad according to the

specifications established in the FMP for the Shoal Project Area (DOE/NV, 1996c). For details

of sump construction, see sump construction diagrams, Figures 8-1 and 8-2, included after the

text. Each sump that was used to contain fluids also contains a wildlife escape ladder. The sumps

are completely surrounded with orange construction fencing. In addition, flagging was strung

across the sumps to discourage birds from landing in the sumps.

8-2

8.4 Disposition of Fluids and Current Status of SumpsDrilling fluids from Wells HC-1, HC-2, HC-3, and HC-4 were discharged into their respective

sumps: HC-1 Sump #1, HC-2 Sump #1, HC-3 Sump #1, and HC-4 Sump #1. When drilling

operations were completed at each well, a composite sample was taken from Sump #1 for

laboratory analysis. An “ER Fluid Disposition Tracking Form” was also filled out at this time to

track the amount of fluid that was discharged into each sump. These forms are provided for

reference at the end of this section as Tables 8-1 through 8-4.

A letter dated December 4, 1996, to B. Bangerter (DOE Underground Test Area Subproject

Manager) from P. Gretsky (IT Offsites Project Manager), indicated that all fluid management

results for each of the sumps were below five times the NDWS. Therefore, the fluids could be

released via overland flow.

At the completion of hydrologic testing and Shoal Mud Pit remediation, all but two of the drilling

sumps were closed. Approximately 600 gallons of water from the sump at HC-1 were discharged

to the ground or used for dust control. All but two sumps were closed in place. One sump

located at HC-3 and one at HC-4 are still used for fluid management during hydrologic testing of

these wells. The liners were removed from the closed sumps and shipped to the NTS for disposal.

The cuttings were buried in place and the areas graded. The sumps associated with HC-3

alternate drilling location were never used and therefore never lined. These sumps were pushed in

and the area was also graded (IT, 1998).

Apron

25 feet

I

r+---+---L--/ ~~I---_

50 feet

Top View

¢~'---------~~SlopeSideViElw

Apron

Ground 1--------..1Surface

Inset View-------------- ----

Note:

Liner is a 55- by 55-foot flat sheet of 35-mil (0.035-inch) Hypaton'"

cooI'llNoo~ L.... ..J

Figure 8-1Diagram of Single-Lined Sump Construction

8-3

15 feet

Apron

4"PVC

Inspection pipe

40 feet

Top View

Inspection Pipe

Side View

Geotextile

Apron

Fill

Ground I--------~

Surface

Inset View

Note:

Liners are 55- by 55-foot flat sheet of 36-mil (0.036-inch) HypalonM

Leak detection trench filled with +1/2 - 3/4" gravel.eno<'IlNoo~L.- _

Figure 8-2Diagram of Double-Lined Sump Construction

8-4

Table 8-1Well HC-1 ER Fluid Disposition Status Reporting Form

Site Identification: HC-1Site Location: Shoal Proj. Churchill Co. NV. ,Site Coordinates: N: 1621,993.0 E: 557623.4 approx.

Well Classification: Near FieldIT Project No: 764044.03.07.00.00

Report Date: 10/27/96DOE/NV Project Manager: Janet WingIT Project Manager: Paul Gretsky

IT Site Representative:IT Waste Coordinator:

Jeff WurtzTerre Maize

ell Construction Activity Activity Duration#Ops.D Wellays (A) Depth

(m)

From To Solids Liquid Solids liquid

Stage I: 9/26/96 10/2/96 7 286.5 15.84 56.79 0 0Vadose-Zone Drillin

Stage II: 1012/96 10127/96 3 409.34 5.97 14.29 0 0Saturated-Zone Drillin •

000I

Stage ill: 10/2/96 10127/96 4 409.34 0 45.39 0VIInitialWell Develo rnent"

Stage IV: na na na na na na na naFinal Develo ment

na na na na na na na na

Cumulative Production Totals to Date:14

21.81 116.47

(A) Operational days refer to the numberof days that the drill rig was in operation during at least part of one shift.(8) Solidsvolumeestimatesincludecalculatedadded volume attributedto rock bulking factors.NA =Not Applicable; m =meters; m3 =cubic meters; AlP =Analysis In Process• Well reentered and deepened, duration spans both initial drilling and deepening efforts.

Tritium Curie Inventory: Sump #1 (lined) =Fluids at natural background Sump #2 (double-lined) =naTotal Device Capacities (rn"): Sump #1 = 219.0 Sump #2 = 219.0

Remaining Device Capacity (Approximate) as of 10/27/96 Sump #1 = 86.83 m3 Sump #2 = 219.0 m3





Site Identification: HC-2Site Location: Shoal Project Churchill Co. NVSite Coordinates: N:Report Date: 10/16/96DOE/NV Project Manager: Janet WingIT Project Manager: Paul Gretsky

#Ops.D WellWell Construction Activity Duration ays (A) Depth

Activity (m)

From To Solids Liquid Solids LiquidB

Stage I: 10/6/96 10/15/96 5 335.28 18.22 30.60 0 0Vadose-Zone Drillin

Stage II: 10/15/96 10/16/96 397.15 3.01 20.20 0 0Saturated-Zone Drillin

Stage iii: 10/16/96 10/19/96 4 397.15 0 16.17 0 0

00 Initial Well Develo mentI

0'1Stage IV:Final Develo ment

Cumulative Production Totals to Date:10 397.15

21.23 66.97 o o

(A) Operational days refer to the number of days that the drill rig was in operation during at least part of one shift.(8) Solids volume estimates include calculated added volume attributed to rock bulking factors.

NA =Not Applicable; m =meters; m3 =cubic meters; AlP =Analysis In Process

Tritium Curie Inventory: Sump #1 (lined) = nil Sump #2 (double-lined) = Sump #3 (lined) = Sump #4 (lined) =Total Device Capacities (rrr'): Sump #1 =219 m3 Sump #2 =219 m3 Sump #3 = na Sump #4 =na Infiltration Area =na

Remaining Device Capacity (Approximate) as of 1011201196: Sump #1 =130.8 m3 Sump #2 =219 m3

IT Authorizing SignaturelDate:



Site Identification: HC-3Site Location: Shoal Project Churchill Co. NVSite Coordinates: N:Report Date: 11/09/96DOE/NV Project Manager: Janet WingIT Project Manager: Paul Gretsky



#Ops.D WellWell Construction Activity Duration ays (A) Depth

Activity (m)

From To Solids Liquid Solids Liquid

Stage I: 11/3/96 11/5/96 3 329.18 17.97 36.13Vadose-Zone Drillin

Stage II: 11/5/96 11/9/96 5 397.15 3.26 74.42

Saturated-Zone Drillin

Stage III: NA NA 0 NA NA NA00 Initial Well Develo ment

I-...]

Stage IV:Final Develo ment

Cumulative Production Totals to Date:8 397.15

21.23 110.55

m3 Sump #2 = NA m3

(A) Operational days refer to the number of days that the drill rig was in operation during at least part of one shift.(8) Solids volume estimates include calculated added volume attributed to rock bulking factors.

NA =Not Applicable; m =meters; m3 =cubic meters; AlP =Analysis In Process

Tritium Curie Inventory: Sump #1 (lined) =All fluids discharged were at background levels Sump #2 ( not lined) =NA

Total Device Capacities (m3) : Sump #1 =219.0 Sump #2 =not lined

Remaining Device Capacity (Approximate) as of: 11/09/96 Sump #1 87.22

IT Authorizing Signature/Date:





Site Identification: HC-4Site Location: Shoal Project, Churchill Co. NVSite Coordinates: N:Report Date: 10/23/96DOE/NV Project Manager: Janet WingIT Project Manager: Paul Gretsky

Well ConstructionActivity

Activity Duration#Ops.D Wellays (A) Depth

(m)

From To Solids LiquidB

Solids Liquid

Stage I:Vadose-Zone Drillin

10/20/96 10122/96 2 318.39 18.75 24.98 o o

Stage II:Saturated-Zone Drillin

10122/96 10123/96 2 397.15 2.48 12.11 o o

10/23/96 10123/9600I

00

Stage III:Initial Well Develo ment

Stage IV:Final Develo ment

NA NA NA

397.15

NA

o

NA

2*

NA

NA

NA

NA

NA

NA

Cumulative Production Totals to Date:

NA NA

5

NA

397.15

NA

21.23

NA

39.09

NA

o

NA

o

(A) Operational days refer to the number of days that the drill rig was in operation during at least part of one shift.(B) Solids volume estimates include calculated added volume attributed to rock bulking factors.* Well development fluid volumes estimated from water production rates during development session.

NA = Not Applicable; m = meters; m3 = cubic meters; AlP = Analysis In Process

Tritium Curie Inventory: Sump #1 (lined) = All sump fluids at natural background activitiesl Sump #2 (double-lined) =

Total Device Capacities (rrr'): Sump #1 = 219 m3 Sump #2 = 219 m3 Infiltration Area = na

Remaining Device Capacity (Approximate) as of 10/23/96: Sump #1 =158.7 m3 Sump #2 =219 m3

9-1

9.0 Waste Management

IT was responsible for waste management and environmental compliance at the PSA. Generated

waste included sanitary waste, hydrocarbon waste, and decontamination rinsate. Analytical data

for the waste associated with the site characterization project was reviewed to determine its

regulatory status. The analytical data indicated that the waste is not regulated for hazardous

constituents and is below performance objective criteria for radioactive waste. Therefore, the

non-liquid waste was disposed of as sanitary waste. Hydrocarbon waste was disposed of by the

drilling contractor. Only one 55-gallon drum of decontamination rinsate was generated during the

Shoal Mud Pit characterization and was classified as non-RCRA rinse water. This drum was

transferred to the Nevada Test Site (NTS) and the contents were disposed of as sanitary waste in

the Area 6 sanitary sewage lagoons.

9.1 NVO-325 ProtocolsThe Shoal Project was conducted under the protocols of NVO-325 Waste Management

procedures. NVO-325 (DOE, 1992) is DOE Nevada’s criteria for acceptance of radiological

waste at the NTS and is also designed to prevent the generation of mixed waste. Therefore, every

product used on the Shoal site had to have an approved Material Safety Data Sheet (MSDS) prior

to being brought to the site. These approved MSDSs were kept on location in the Shoal Project

office trailer.

Waste generated during soil and fluid sampling was held pending analysis of associated samples.

Waste items were tagged and labeled to ensure traceability back to the samples. When the

analytical results for the samples came back below the performance objective criteria, these were

disposed of as sanitary waste.

9.2 Results of Waste Management AuditA Waste Management Audit was conducted by IT Corporation Environmental Compliance

Department at the Shoal Project Site on October 4 and 5, 1996. The Shoal Project successfully

passed this audit with no findings.

9.3 Disposition of WasteWaste generated as part of sampling activities was disposed of as sanitary waste as the analytical

data indicated that the waste is not regulated for hazardous constituents and is below performance

objective criteria for radioactive waste. The hydrocarbon waste was disposed of by the drilling

9-2

subcontractor. The one drum of decontamination rinsate generated during the Shoal Mud Pit

characterization was disposed of as sanitary waste in the Area 6 sewage lagoons at the NTS.

10-1

10.0 References

CFR, see Code of Federal Regulations.

Code of Federal Regulations. 1996. 40 CFR Parts 261 and 264. Washington, DC: GovernmentPrinting Office.

DOE, see U.S. Department of Energy.

Desert Research Institute. 1988. CERCLA Preliminary Assessment of DOE’s NevadaOperations Office Nuclear Weapons Testing Areas. Las Vegas, NV.

DRI, see Desert Research Institute.

Eubank, Bernard F., and Alan W. Ward. 1964. On-site Health and Safety Report, VUF-1012. Report prepared for AEC/NVO. Reynolds Electrical & Engineering Co., Inc.

Federal Facility Agreement and Consent Order. 1996. Agreement between U.S. Department ofEnergy, the State of Nevada, and the U.S. Department of Defense.

Gretsky, Paul. IT Corporation. 1996b. Letter to Bob Bangerter. 4 December. Las Vegas, NV.

IT Corporation. 1996. Field Instructions for Project Shoal Area Surface and SubsurfaceInvestigation, Churchill County, Nevada, ITLV/10972-176. Las Vegas, NV.

IT Corporation. 1998. Personal communication between R. Deshler, IT Corporation, andD. Madsen, Bechtel Nevada, about sump closures. Las Vegas, NV.

NAC, see Nevada Administrative Code.

NRS, see Nevada Revised Statutes.

Nevada Administrative Code. 1996. Chapter 445A. Nevada Drinking Water Regulations.Carson City, NV.

Nevada Revised Statutes. 1996. Chapter 445. Nevada Drinking Water Regulations. Carson City, NV.

Nevada Division of Environmental Protection. 1992. Contaminated soil and groundwaterremediation policy.

U.S. Department of Energy. 1992. Waste Acceptance Criteria, Certification, and TransferRequirements, NVO-325. Prepared by DOE and REECo.

10-2

U.S. Department of Energy, Nevada Operations Office. 1994. Resource Conservation andRecovery Act Industrial Site Quality Assurance Plan, Nevada Test Site Nevada.Las Vegas, NV: IT Corporation.

U.S. Department of Energy, Nevada Operations Office. 1996a. Corrective Action InvestigationPlan for Project Shoal Area CAU No. 416. Prepared for DOE by IT Corporation.Las Vegas, NV.

U.S. Department of Energy, Nevada Operations Office. 1996b. Project Shoal Site-SpecificHealth and Safety Plan. Prepared for DOE by IT Corporation. Las Vegas, NV.

U.S. Department of Energy, Nevada Operations Office. 1996c. Fluid Management Plan for theProject Shoal Area Offsites Subproject, DOE/NV-449. Prepared for DOE byIT Corporation. Las Vegas, NV.

Distribution List

Copies

Donald A. Garrepy 1Bureau of Federal FacilitiesDivision of Environmental Protection555 E. Washington, Suite 4300Las Vegas, Nevada 89101

Sabrina D. Bonnell 1Environmental Restoration DivisionDOE/Nevada Operations OfficeP.O. Box 98518, M/S 505Las Vegas, Nevada 89193-8518

Monica Sanchez 3Environmental Restoration DivisionDOE/Nevada Operations OfficeP.O. Box 98518, M/S 505Las Vegas, Nevada 89193-8518

U.S. Department of Energy 2Office of Scientific and Technical Information175 Oak Ridge TurnpikeP.O. Box 62Oak Ridge, Tennessee 37831

U.S. Department of Energy 1Technical Information Resource CenterDOE/Nevada Operations OfficeP.O. Box 98518, M/S 505Las Vegas, Nevada 89193-8518

IT Corporation 4P.O. Box 93838Las Vegas, Nevada 89193

Rick Deshler 5IT Corporation, M/S 4392621 Losee RoadBldg. B-1, Suite 3050-01N. Las Vegas, NV 89030

Tim White 1IT Corporation, M/S 4392621 Losee RoadBldg. B-1, Suite 3050-01N. Las Vegas, NV 89030

Jenny Chapman 1Desert Research Institute755 East Flamingo RoadLas Vegas, NV 89119

Dave Madsen 2Bechtel NevadaP. O. Box 98521, MS NTS306Las Vegas, NV 89193-8521

Central Files 1IT Corporation, M/S 4392621 Losee RoadBldg. B-1, Suite 3050-01N. Las Vegas, NV 89030

U.S. Department of Energy Public Reading Room 1P.O. Box 98521, M/S NLV040Las Vegas, NV 89193-8521

Data Report Project Shoal Area Churchill County, … REPORT PROJECT SHOAL AREA CHURCHILL COUNTY,...

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