ML20134K474

Geotechnical Verification Work Rept of Results

ML20134K474
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Site:	Vogtle
Issue date:	08/31/1985
From:	BECHTEL GROUP, INC.
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Text

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Geotechnical Verification Work I

Report of Results E

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Vogtle Electric Generating Plant August 1985 I

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- Geotechnical Verification Work I

Report of Results I

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Vogtle Electric Generating Plant August 1985 I

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.l Geology Group San Francisco I

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TABLE OF CONTENTS I

PAGE 1.0 Introduction 1

2.0 Scope of Studies 2

3.0 Summary of Results 3

4.0 Conditions in the Blue Bluff Marl 5

4.1 Core Drilling 5

4.2 Well Cluster A 5

4.3 Well Cluster B 7

5.0 Permeability Testing 8

5.1 In Situ Field Tests 8

5.2 Laboratory Tests 10 6.0 Observation Well Installation 11 6.1 Water Table Aquifer Wells 12 5

6.2 Marl Aquielude Wells (Piezometers) 16 I

Tables Figures Appendix I

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LIST OF TABLES Table 1 Sunsaary of Observation Well Data Table 2 Permeability Testa LIST OF FIGURES Figure 1 Observation Wells at Plant Vogtle Figure 2 Geologic Section - Well Cluster A Figure 3 Geologic Section - Well cluster B APPENDICES Appendix A Standard Penetration Testing Results Appendix B Geologic Drill Logs Appendix C Laboratory Test Results 11

C80 TECHNICAL VERIFICATION WORK REPORT OF RESULTS

1.0 INTRODUCTION

A program of geotechnical verification work was conducted at Plant Vogtle during the summer of 1985 to resolve several licensing issues and to ccquire supplementary data on site characteristics. The work consisted cf Standard Penetration Testing of the backfill, core drilling and in citu permeability testing of the marl, observation well installation, and laboratory testing.

Standard Penetration Testing was performed to verify the backfill compaction with respect to liquefaction potential.

Core drilling of the marl underlying the plant facilities (the foundation bearing stratum) was conducted to resolve the Open Item discussed in Section 2.5.4.1.3 of the Draft Site Evaluation Report (DSER).

Observation wells were installed, both in the marl and the water table cquifer, and permeability testing was conducted in the marl to resolve the Open Item on ground water monitoring discussed in Section 2.5.4.5 of the DSER. Continuous recorders were installed on two observation wells to resolve Open Item on hydrostatic loading discussed in Section 2.4.12.5 cf the DSER. Laboratory tests included measurement of marl permeability, i

cnd measurement of the cation exchange capacity and distribution coefficient of the backfill. The tests were conducted to supplement cxisting data.

1021g 1

This report discusses the results of these studies, with the exception of the Standard Penetration Testing in the backfill. That information has been subaltted in a report entitled, " Standard Penetration Test Results",

and for completeness is submitted as Appendix A.

2.0 SCOPE OF STUDIES The mael was cored in two areas adjacent to the powerblock, designated as well clusters A and B on Figure 1.

A series of 3 wells were installed at cach cluster to monitor hydrostatic pore pressure at representative depths in the mari. In situ (packer) permeability tests were conducted in these cored holes.

six observation wells were installed in the water table aquifer to allow monitoring in the powerblock backfill and in the area northwest of the powerblock. Two of these replace wells damaged from construction cetivities. Continuous water-level recorders were installed on two water-table observation wells for determining magnitude and frequency of diurnal fluctuations of the water table.

The drilling, coring, in situ permeability testing and observation well installation was performed by Law Engineering Testing Co., under the supervision of a Bechtel Engineering Geologist.

Laboratory permeability tests on ten mael samples from the 900 series holes were conducted by Harding Lawson Associates. The distribution coefficients (Kd) of four backfill samples was done by Battelle Pacific 1021g 2

Northwest Laboratories. Cation exchange capacity measurements on ten backfill samples were made by Soil and Plant Laboratory, Inc. These 1

laboratory tests were conducted to supplement and verify data fece previous investigations.

3.0

SUMMARY

OF RESULTS The results of the geotechnical verification work supports the previous data on site characteristics of Vogtle.

Core drilling of marl: The very high core recovery; lack of voids, altered zones, or fractures; and drilling rate results verify that the mael is a fine-grained, competent and firm material without secondary openings. The core from the holes confirm the results of the many marl core holes drilled previously in the powerblock area.

Peameability testing of marl: Both the in situ (packer) tests and the laboratory tests of the marl support results of previous studies. Of the fifteen intervals tested for in situ permeability, none showed any water takes. The laboratory tests show the mael to be consistently very low to practically

~

impermeable, ranging from 1.4 x 10~

to 5.0 x 10.

cm/sec.

These data show that the mael is nearly impermeable.

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observation well installation: The observation wells installed in the water table aquifer and the earl aquielude during this study provide additional monitoring points in the inmediate vicinity of the plant facilities. The initial water levels recorded in the new wells are consistent with previous data.

Continued monitoring of those wells is part of the VEGP ground water monitoring program.

Distribution coefficient (Kd) of backfill: In the SER, June, 1986, the NRC assumed Kd values of 5 ml/g for strontium and 49 al/g for cesium. These assumed values are stated by the NRC as being conservatively low, based on the literature. The results of the laboratory measurements confirm that assumption. The measured values are approximately an order of magnitude greater than the assumed values.

4.0 CONDITIONS IN THg BLUg BLUFF MARI.

The integrity of the mael as a foundation layer and a barrier to ground water movement was questioned. To provide data on the structure, 11thology, and permeability of the mari, the following program was conducted.

4.1 Core Drilling Two clusters of three wells each, were constructed on the southeast and northwest sides of the power block (Figure 1).

The marl was core dellied for visual inspection to determine the integrity of the mari. The wells 1021g 4

designated 900, 901, and 902 are located to the southeast, inside the power block excavation and the wells designated 903, 904B, 905 are located to the northwest, outside the excavation, as shown on Figure 1.

The geologic logs for these holes are included in Appendix B.

From inspection of the core, zones to be monitored by the wells were selected.

4.2 Well Cluster A (wells 900. 901. and 902)

The first well drilled was 900. A hole, 9-7/8 inches in diameter, was drilled through the backfill to the top of the mari, using a tricone rock-bit and revert / water as the circulating fluid. The top 10 feet, from a depth of 92.6 ft to 102.6 ft. was cored using a 5-1/2 inch OD

- double tube, ball-bearing, swivel-type, split core barrel with a bottom (face) discharge bit. Clear water was used as the circulating fluid.

The hole was then reamed to 9-1/8 inches diameter and 6-inch steel casing was installed to a depth of 102.6 ft.

The casing.was cemented in place using a tremie pipe, 1-1/4-inches diameter inserted outside the casing to o depth of 102.6 ft, and a grout mix of one part cement to one part water (by volume).

After allowing cement to set for four days, the casing was flushed with clean water, and coring was continued to a depth of 142.6 ft.

(Approximately 5 feet above the base of the mari, based on data contained in the FSAR). After being logged by an engineering geologist, the core was boxed, photographed, placed in plastic sleeves for moisture 1021g 5

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preservation, and stored. Permeability tests, in situ, were conducted in ten foot intervals as drilling progressed from 102.6 ft (bottom of casing) to 142.6 ft (bottom of hole). The data obtained from well 900 were used to locate, core, test and complete wells 901 and 902. Both of 1

these wells were drilled, cored, and tested in the same manner and using the same equipment as well 900.

4 Well 901 was drilled with a tricone bit to a depth of 91.6 ft and cored from 91.6 ft to 128 ft (bottom of hole). Casing was cemented in place at o depth,of 102 ft and a permeability test was conducted in the bottom ten feet (118-128 ft).

Well 902 was dellied with a tricone bit to a depth of 91.5 ft and cored from 91.5 ft to 108 ft (bottom of hole). Casing was cemented in place at e depth of 100 ft and a permeability test was conducted in the bottom cight feet (100-108 ft).

4.3 Well Cluster B (Wells 903. 9048, and 905)

The first well drilled at this location was well 903. A hole 9-7/8 inches in diameter was drilled through the Barnwell sediments with a tricone rockbit to the top of the mari. The hole was drilled, cored, and tested in the same manner and with the same or equivalent equipment used to drill wells 900, 901 and 902.

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1 The top of the earl was encountered at a depth of 78 ft.

The hole was c red from 78 to 133 ft (approximately 10 ft above the base of the earl). Steel casing, 6 inches in diameter was cemented by the tremia method at a depth of 85 ft.

Permeability tests were conducted, as drilling progressed, in ten foot intervals from 85 to 133 ft.

The dats obtained from well 903 were used to locate, core, test, and complete wells 904B and 905. Holes 904 and 904A had to be abandoned due to split casing and encountering buried utilities, respectively, the logs for these holes are included in Appendix B.

Well 904B was drilled with a rockbit to a depth of 68.5 ft and cored from 68.5 ft to 96.7 ft (bottom of hole). Casing was cemented in place at a depth of 85 f t and a permeability test was conducted in the botton 11.7 ft (85 - 96.7 ft).

Well 905 was drilled with a rockbit to a depth of 77 ft and cored from 77 ft to 116 ft (bottom of hole). Casing was cemented in place at a depth of 88.5 ft and permeability tests were conducted in the botton 27.5 ft.

Following the in situ permeability tests, porous tube (Casagrande) piezometers were installed in each of these holes. The well construction details are discussed in Section 6.2.

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5.0 PsammaaILITY TESTING 5.1 In Situ Permeability Testina Permeability testing (in situ) was conducted in holes 900 through 905 using the single packer method according to procedures in designation E-18 of the U.S. Bureau Reclamation " Earth Manual" and in general goepliance with the corps of Engineers, RTH-381-80.

(The latter reference was recommended by the NRC staff).

The validity of some of the previous in situ permeability tests conducted during site exploration (1971-1973) was questioned by NRC, since some of these holes were drilled with bentonite as the circulating fluid. The NRC was concerned that bentonite could have caused some plugging of pomeable zones, thereby reducing the amount of water being injected, resulting in calculated permeabilities lower than actually existed. In ceder to alleviate this concern, all of the holes were drilled with a blodegradable drilling additive (Revert) and water when drilling in sediments above the mari, and only clear water was used as drilling in the mari.

l When drilling holes that penetrated the mari, a 6-inch diameter casing was cemented 8 to 10 ft below the top of the mari. After allowing the cement to set a minimum of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the Revert was broken down with chlorine and the casing flushed with clean water. The holes were cored using only potable water as the circulating fluid in the earl after casing was set.

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I The method of testing was as follows:

At each well cluster, the deep core hole (900 and 903) was advanced in 10 foot intervals and a pernmability test was conducted at each interval.

This deilling/ testing procedure was followed until the total depth of hole was reached. The interval being tested (botton 10 foot) was isolated from the remainder of the hole by a pneumatic inflatible packer.

In the remaining wells, (901, 902, 904B, and 905), the hole was advanced to total depth, which was predetermined from well 900 or 903 data, and the bottom interval tested. The interval being tested was isolated in the same manner.

Each permeability test was conducted for a total period of 40 or 50 tinutes, as follows: After the packer was seated, water was pumped into the test section at a minimum pressure (i.e. 40 psi) and held for 8 or 10 tinutes. While recording water meter' readings. The pressure was increased to an intermediate pressure (i.e. 50 psi) and heb: for another 8 or 10 minute period, While recording water meter readings. The pressure was then increased to the maximum (i.e. 60 psi) and held for 8 ce 10 minute. The test was continued by decreasing pressare back to the intermediate and minimum pressures at the same time intervals.

In all of the tests conducted, the water takes were seco indicating an apparent permeability of zero. The permeability test data are shown on Table 2.

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5.2 Laboratory Parmeability Testina In situ (packer) permeability tests cannot be used to quantify the permeability of materials with very low values, due to mechanical and control limitations. Packer tests at Vogtle in fresh mael have consistently shown no water take, implying the marl is impermeable.

In ceder to quantify the permeability of the earl laboratory measurements were made. During coring, ten samples of the core were collected, wrapped in foil and sealed with wax for permeability testing in the itboratory. The laboratory tests were performed by Harding Lawson Associates. The results are summarized on Table 2, with the data included in Appendix C.

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The range of permeability measurements is from 1.41 x 10 to 5.01 x

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10 cm/sec. These data, combined with the in situ tests confirm that the earl is nearly impermeable.

6.0 OBSERVATION WELL INSTALLATION In Section 2.5.4.5 of the Draft SER, NRC requested additional monitoring wells and more frequent measurements of the ground water levels.

In ceder to develop a ground water monitoring plan to meet these concerns, the number and location of existing observation wells was first reviewed. This review revealed an adequate number and location of cbservation wells existed to monitor the confined aquifers. However, the 1021s 10

data indicated that for complete coverage of the water table aquifer, additional wells were required. Therefore, two additional observation wells were installed to monitor water levels in the Barnwell sediments, to the north and west of the power block, and two additional wells were installed to monitor water levels in the backfill to the east and south cf the power block. These additions to the existing observation wells were incorporated in the proposed monitoring plan submitted to NRC on May 21, 1985. Also, three existing observation wells were found to be damaged. These were to be grouted, and two were to be replaced. MRC staff found the proposed plan acceptable, as stated in Section 2.4.12.7 Cf the Finei SER.

Three piesometers in nach of two well clusters were installed at various depths within the mari. These piezometers are installed at the request cf the NRC to monitor distribution of hydrostatic pore pressure within the earl.

The location of all observation wells are shown on Figure 1.

These wells cre currently being used to monitor ground water conditions at Plant Vogtle.

6.1 Water Tablo Aquifer Wells The NRC requested that two water table aquifer wells be equipped with automatic water level recorders, one in the backfill and the other in cdjacent Barnwell sediments. Well 808 was chosen as the Barnwell monitoring well and well LT-13 as the backfill well for continuous 1021g 11 1

monitoring. To better accommodate installation of an automatic recorder these two wells were constructed with 4-inch diameter well casing and cereen. The remaining wells were constructed with 2-inch diameter well casing and screen.

6.1.1 Wells 808 and 809 Wells 808 and 809 were drilled and completed as observation wells to monitor water levels in the Barnwell sediments. Well 809, located west cf the power block was drilled with a 7-7/8-inch diameter, tricone rock bit, using Revert and water as the circulating fluid. The well was drilled to a depth of 90 ft, one foot below top of mari. The well was constructed by installing a 2-inch diameter PVC screen, 10 ft long with

.020 inch slot size. The screen is located from 74.5 to 84.5 ft below ground level and gravel packed to a depth of 69.35 ft.

A bentonite seal 2.5 ft thick, was installed above the gravel pack and the remainder of the annulus between the hole and 2-inch casing was grouted to ground surface with a 1:1 mixture of coment and water.

Well 808, located north of the power block, was drilled with a 6-7/8 inch diameter, tricone rockbit, using Revert and water as the circulating fluid. The well was drilled to a depth of 68 ft, 1.7 ft below top of I

mari. Well 808 was constructed by installation of 4-inch diameter PVC l

casing and screen. The well screen, 10 ft long with slot size of

.020-inch is located between 50.5 and 60.5 f t depth and gravel packcd to t

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o depth of 45.5 ft.

A bentonite seal, 2 ft thick was installed above the gravel pack and the remainder of the annulus between the 4-inch casing and the hole was grouted to land surface with a 1:1 mixture of cement and water.

6.1.2 Wells LT-12 and LT-13 Wells LT-12 and LT-13 were drilled and completed as observation wells to monitor water levels in the backfill. Well LT-12, located south of the power block, was dellied with a 6 7/8-inch diameter tricone bit using R; vert and water as the circulating fluid. The well was drilled to a depth of 79ft, top of mari. The well was constructed by installing a 2-inch diameter casing / screen assembly. The screen is 10 ft. in length eith a.020-inch slot size, located from 63.1 to 73.lft. below ground surface and is a gravel packed to a depth of 58.15 ft.

A bentonite seal, 1.65 ft. thick, was installed above the gravel pack and the remainder of the annulus between the 2-inch casing and the hole was grouted to ground surface with a 1:1 mixture of cement and water.

Well LT-13, located near the east end of the turbine building, was drilled with a 7 7/8-inch diameter, tricone rockbit to a depth of 89 ft, top of mari. The well was constructed by installation of 4-inch diameter PVC casing and screen. The screen is 10ft long, with a slot size of

.020-inch located from 73.55 to 83.55 f t, depth and is gravel packed to a depth of 68.10 ft.

A bentonite seal, 2.27ft, thick, was installed above 1021g 13

the gravel pack and the remainder of the annulus between the 4-inch ccsing and the hole was grouted to land surface with a 1:1 tilxture of coment and water.

In constet.ction of all observation wells, the Revert was broken down with thlorine after casing / screen installation an.d before installation of gravel pack. Clean water was pumped through the PVC casing, exiting throusta the screen and returning to land surface through the well annulus duelug installation of the gravel pack. All of the wells were developed by wash,ing with clean water f ollowed by pumping with air.

6.1.3 Wells LT-1A, LT-7, and STA.

During backfilling of the powerblock excavation it was necessary to maintain the water table far enough below grade to assure design compaction.

Several observation wells were installed around the powerblock to monitor this water level. As backfill operations progressed and eventually advanced several feet above the water table, all of the observation wells were grouted and abandoned, except three.

Of the three wells, STA is no longer needed and LT-1A and LT-7 were made o part of the long term ground water monitoring program.

As backfilling advanced, these wells were damaged and could not be ut111 ed as observation wells. All three of these wells were abandoned ts part of this work by grouting from the bottom up, using a 1 1/2 inch diameter hose as a tremie with a 1:1 mixture of cement and water.

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As stated above wells LT-1A and LT-7 were included in the long term ground water monitoring program, therefore they were replaced. Well LT-1A was replaced with well LT-1B located 4 ft. due east. The hole was drilled with a 5 7/8-inch diameter, tricone rockbit using Revert and water as the circulating fluid. The hole was drilled to a depth of 84.65 ft. which is 1.35 ft. below the top of the mari. The well was completed by installing a 2-inch diameter PVC casing / screen assembly to a depth of 84.65 ft.

The screen is 10 ft. in length with.020-inch slot cise, located between 72.65 and 82.65 ft. and gravel packed to a depth of 65.17 ft.

A bentonite seal 2.17 ft. thich was installed on top of the gravel pack and the re.nainder of the annulus between the 2-inch casing cnd the hole was grouted with a 1:1 mixture of cement and water.

Well I.T-7 was replaced with well LT-7A, located 7 1/2 ft. west. The hole was drilled with a 5 1/8-inch diameter, tricone rock bit using Revert and water as the circulating fluid. The hole was drilled to a depth of 87 ft, which is top of marl. The well was completed by installing a 2-inch diameter, PVC casing / screen assembly to a depth of 87 ft.

The screen is 10 ft. in length with.020-inch slot size, located between 75 and 85 fL.

and gravel packed tc a depth of 65 ft.

A bentonite seal, 2-ft thick, was installed on top of the gravel pack and the remainder of the annulus between the 2-inch casing and the hole was grouted with a 1:1 mixture of a

cement and water.

1021s 15 1

6.2 Marl observation Wells (Piezometers)

Each of the holes cored in the mari (900 through 905) was completed by installation of r. porous stone piezameter to measure hydrostatic pore pressure within the earl confining layer.

The porous stones are 2 1/2 inches diameter and 2 1/2-ft. overall length, eith a 2 ft. length of 60-micron porous stone. The riser casing is 1-inch diameter schedule 80 PVC.

The sand used for the filter pack is " Ottawa 10-30" which is clean and well graded from No. 10 to No. 30 mesh, United States standard sieve sizes. This gradation was selected to match the 60-micron porous stones and prevent movement into the stone of fines in the clay. The sand pack cnd stone are much more permeable than the mari.

All of the piezometers were installed in accoedance with Designation E-28, U.S. Bru. Rec. " Earth Manual", as follows. Upon completion of drilling, the bottom of the 5 1/2-inch diameter core hole was sounded.

The bottom 2 ft of hole was filled with Ottawa sand through a tremie, and tamped. The porous stone, having been soaked in water from 24 to 48 hrs., was lowered to the top of the sand. A centralizer was attached to the stand pipe about 6-inches above the stone. Additional Ottawa sand was installed by tremie to fill the annulus between the stone and the hole and to cover the stone a minimum of 1.85 ft., followed by tamping.

1021g 16 l

A bentonite seal, minimum thickness of 2 ft, was placed on top of the f11ter and the remainder of the annulus between the 1-inch standpipe and

-the 5 1/2 inch hole and/or the 6-inch casing, was filled with a 1:1 Cixture of coment and water. Details of the piezoneter installations are on Table 1 and are shown schematically on Figures 2 and 3.

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TABLE 1 -

SUMMARY

OF OBSERVATION WELLS WELL COORDINATES GROUND TOP OF WELL DEPTH TO OPEN Wo.

N E

ELEV.

ELEV.

MARL INTERVAL 808 9625 9300 207.0 216.47 66.3 45.5-68 809 8320 7860 222.8 224.23 89.0 69.35-90 900 7538 10119.5 216.3 218.05 92.6 113.8-140.7

)

901 7533 10104.5 215.58 220,75 91.6 122-128 902 7543.5 10110.5 215.97 221.11 91.0 101.5-108 903 8480 8900 215.75 216.13 18.0 127-133 904B 8464 8885 215.75 216.31 78.8 90-96 905 8450 8900 215.75 216.71 77.3 109.8-116 LT-1B 8388 9304 213.18 215.47 83.3 65.17-84.65 l

LT-7A 8151.3 9317.5 215.92 221.17 87.0 65-87 LT-12 1775 9600 209.0 219.27 79.0 58.15-79 LT-13 8135 10110 219.0 221.2 89.0 68.1-90

)

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TABLE 2 - PdRMEABILITY TESTS IN SITU PERMEABILITY TESTS HOLE INTERVAL QUANTITY OF WATER PERMEABILITY NO.

TESTED (FT.)

INJECTED (GALS.)

(CALCULATED) 900 104.6-112.6 0

0 112.6-122.6 0

0 122.6-132.6 0

0 132.6-142.6 0

0 122.6-142.6 0

0 y

901 118-128 0

0 902 100-108 0

0

.903 85-96 0

0 96-106 0

0 106-116 0

0 116-126 0

0 126-133 0

0 904B 85-96.7 0

0 905 88.5-102.5 0

0 102.5-116 0

0 LABORATORY PERMEABILITY TESTS

• HOLE NO.

DEPTH (PT).

PERMEABILITY (CM/SEC) 901 119.0 5.01 x 10-9 902 104.2 1.95 x 10-6 903 108.2 1.94 x 10-7 903 112.7 4.99 x 10-7 903 128.4 2.06 x 10-6 904B 92.3 2.42 x'10-6 905 91.6 1.41 x 10-6 905 96.7 8.49 x 10-6 905 107.5 1.39 x 10-7 905 114.0 7.81 x 10-8 q.

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• - Tests were performed by HardinE Lawson Associates (See Appendix B)

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.. sENTONITEu -- 101.5':~ d L -MARL / .- SEALS w ,i.;i.. i - lO8.O'. / ^ / 10 0 - j / / 122.Ok n ( e . OPEN - / 128.O'l E ' INTERVAL - 13 3.8' 80 h 140.7' .~. UNNAMED SANDS 60 BECHTEL S A N F R AN CIS CO GEORGIA POWER COMPANY NOTES:

1. NO HORIZONTAL SCALE WAS USED, S HE T'

LLUSTR ATE WELL OBSERVATION WELL CLUSTER A N UCT N. SCHEMATIC SECTION

2. SEE TEXT FOR DETAILS OF WELL CONSTRUCTION.

see a saamme n. en. 9510 FIGU RE 2

903 9048 905 9 9 GROUND SURFACEN / i t/ i, ../ /.- /; 200 ' -' o / // / BARNWELL / / /,. CEMENT / GROUP '/ o 18 0 SEDIMENTS , [ ROUT /- t i ' / /,, / / M STEEL CASING / 160 / / i, n '/ / H 14 0 i.= z ' t / J BENTONITE : z 9 SEALS %, "y 4_. 90.O' ' 1-96.0* $ 12 0 .w j / d

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[ ' - 10 9.a'. M A R L': opgn - '. y = INTER M foi 116.0L 100 s y H 27.0* a 80 ~ UNNAMED SANDS 60 BECNTEL NOTES: SAN FRANCISCO 1. No HORIZONTAL SCALE USED, GEORGIA POWER COMPANY SCHEMATIC TO ILLUSTRATE WELL ALVIN W.VOGTLE NUCLEAR PLANT ) CONSTRUCT!ON. 2. SEE TEXT FOR DETAILS OF WELL OBSERVATION WELL CLUSTER 8 CONSTRUCTION. SCHEMATIC SECTION 9510 FIGURE 3

1 i l 1 APPENDIX A STANDARD PENETRATION TESTS

4 e. MN fff '? $. $olton S eecl, $nc. mse asa.aose IJ sas caossaions tsanacs.onmoa.cai.wo aa massa L \\\\\\ /// M 4dV \\ July 3, 1985 Walter R. Ferris 106 Paseo Way Greenbrae, CA 94904

Dear Mr. Ferris,

Zia Yazdani the results of the standard I have received fro: penetration test progra: carried out at the site of the Vogtle Ten SPT borings were drilled at locations Nuclear Project. distributed across the site and all show very high penetration resistance values in the compacted backfill. My evaluation of the results indicates the following: N-values range from about 30 to 97 with Top 10 ft. of fill

a conservative average value of about 50 N-values range from about 62 to 200 with Depth range 10 to 30 ft.

a conservative average value of about 100 N-values range from about 100 to 200 with Depth range 30 to 80 ft.

a conservative average value of 150. the SPT tests were carried out using a safety ha=:ner I note that and a rope and pulley technique, so that the procedure can be l expected to deliver about 60% of the theoretical free-fall energy to the drill-stem (i.e. the Energy Ratio is about 60%). Based on the above I interpret the.tesults as follocs: l Effective Overburden Average ( Depth N60 **1"* 5 ft. 50 650 psi 1.6 80 20 ft. 100 2650 psf 0.87 87 60 ft. 150 7800 psf 0.53 80 -values are reas nably consistent as would be. Thus the (N )60 y expected for a reasonably uniform fill. The field performance of sites which have and have not liquefied during earthquakes with Magnitude 7.' summarized on the attached figure, shows clearly that there is no possibility of

liquefaction occurring in this soil for any level of ground acceleration that may develop at the Vogtle site. In fact liquefaction is simply not a credible mode of failure for this fill. Sincerely yours, k.0& H. Bolton Seed G e

I.. 0.6 i '. r O.5 1 .ii i i l OA l Ii In 9i .l a O.3 e e e e a e o O O.2 E. / = o a 2 g,,,, y, a e' s FINES CONTENTS 5% e I - Chia *5' Buildine Code (cloy co""01 * - 0.1 q )D, Q a O Uguefaction Ugue tion _ g pon.nenconeen Japanese dato e e e a a Chinese acto y g o 20 30 40 50 0 10 -(Nli60 RELATIDMSHIP BETWEEN STRESS RATIOS CAUSING LIQ N -VALUES FOR CLEAN SANDS FOR H = 7-1/2 EARTHQUAK y

3 a.aw amosmummwo Tusnwa counny geotocencat omsorvnentas a conencion erstenes consunarus x . AT N'TA. GEORGIA 30324 July 26, 1985 GEOTECHNICAL SERNiCb NORWN.K ~ mlzl xe 9M6 l ~ M cm 7/9//65 ,) .' =, e z /. 5~ f l S:;uthern Company Services, Inc. ,F-7 ..___!.T P.O. Box 2625 L, u -- L L-Birmingham, Alabama 35202 g g Attention: Mr. J. A. Bailey Z f f f f(Oy/(ijf N h

Subject:

Standard Penetration Soil Test Borings For Category I Backfill Vogtle Electrical Generating Plant LETCo Job Number 7429 Gentlemen: Law Engineering is pleased to submit boring logs for the coil test borings performed in Category I Backfill at Plant Alvin W. Vogtle. The purpose of this exploration was to obtain specific cunsurface data relative to backfill consistency and depth for Bechtel. Additional borings, testing and installation of piezometers were perf ormed for 3echtel Power Corporation in accordance with their specification documents No. X2A pol, Division C2, Sections No.18 and No. 19.

However, cince they are preparing a separate report, their data has not been included.

All drilling and sampling in the soil test borings was conducted-according to applicable ASTM specifications and was performed by LETCo driller, Hezzie Collins. Law Engineering's responsibilities in this work were limited to the execution of the requested drilling, laboratory testing and providing the necessary field cngineering supervision so that the quality of work could be maintained. Laboratory grain size testing of soil sampl es from the borings has been assigned by Bechtel and is presently underway in the laboratory.

s Southern Company services, Inc. Page 2 July 26, 1985 We have enjoyed assisting Georgia Power in this work, and look f orward to providing our services as the project continues. If you have any questions, do not hesitate to contact us. Very truly yours, LAW ENGINEERING TESTING COMPANY Jose Perez Geotechnical En er / / am Al en Lancaster Civil Engineer Registered Georgia 7075 /cll cc: Bechtel Power Corporation Zia Yazdani 4 4 9 V P W.W.~ * ~

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1 s Lcw Engine nng 1,, m1N,TES l ,,R,,,,,,,,,A SRY_101 f'. -TestingCompany ;;5 : "-*5 a o-o =o JOB NUMBER Soll Test Boring Record ELEV PENETRATION-blows PER FOOT DESCRIPTION DEPfM (FT) 201.70 s to 20 30 40 5060 so 100 I _ BACKFILL-DENSE TO VERY DENSE RED BROWN SLIGHTLY SILTY TO SILTY FINE i TO MEDIUM SAND G 43 \\ 196.7 60 6 74 3 191.7 74 l \\ \\ 'g 129 / / 186.7 63 / m w N \\ 181.7 \\ G 101 121 g 176.7 8 135 g 1 9 154 l 171.7 g 112 9 168 11 " 166.7 O 180 g 131 3 161.7 ) 40 -4 119 REMARKS: Sif utv Swit? */ tug ANAT,og es 3vu80($ AND ABEREVIAff0NS U$CD ABovE

s Law Eng.ineenng sat-lol ,,, O o..E. Testing Company 6-4.5,f,6-85 o"= o "'o

742, JOB NUMBER Soil Test Boring Record

"^ ' ENETAATION-BLOWS PER 8OOT DESCRIPTION DYdHgrT) ,,, 30 5 to M 30 40 5060 80 1000 ,BACAFILL-VERY DENSE RED BROWN SLIGHTLY SILTY TO SILTY FINE TO G158 IEDIUM SAND 156.7 9159 9171 151.7 g 182 g100 5 146.7 g l Al" O.1.9. l 1ST 6 141.7 g 5 O1S.D. 5" 136.7 gg 1ST 6 9 19.9. 4" 131.7 gm IST 6' ) Ol.29. 73.5 3" OBSTRUCTION-CONCRETE FRAGMENTS 126.7 gjpqoq l l ) 76 77.5 oit 8 4 BORING TERMINATED I REMARKS: SEE utv 5 ettT too guotaNaTion or Svv80Ls aNo assatvlATtONS USC3 ABOVE

i ON OhONIOh SAT-102 BORING NUMBER BORING COORDINATES Testing Company N. T7. ss o.1 OR,m.o e-ec9-es 7429 E 93 + 00 JO8 NUMBER a^os Or 2 Soil Test Boring Record i 4 L WS F 07 DESCRIPTION 4,g 5 10 20 30 40 50 60 80 100 D@THIFT) BACKFILL-DENSE TO VERY DENSE RED 13ROWN SLIGHTLY SILTY TO SILTY FINE TO MEDIUM SAND %2N\\ 199.2 o:' Y @ 63 \\ 194.3 gh, 1 \\ 3152 189.3 3105 3123 / / 184.3 g7 \\ \\ 9112 179.3 / 99 ( i 174,3 9134 9179 10" 169.3 g139 9182 E II" { 164.3 u 40 0 161 REMARKS: J 5tt uty SMEET FOR E P6 ANAT.ON OF SvuSO6$ AND AasatviatlONS v5ED ABOvt

4 g Law Enginewing S T-102 ,,,,,,,,,,,R i Testing -Company ----- '-*l'-*5 ore - o JOB NUMBER 2 ' 2 Soil Test Boring Record ELEV PENETRATION-BLOWS PER FOOT oESCRipTION g y FTl 164, % to 20 30 40 5060 80 100 BACKFILL-VERY DENSE RED BROWN 'SLIGHTLY SILTY TO SILTY FINE TO MEDIUM SAND 9162 L59 3 em 11" O.L 1 11 " 154.2 gl.22. 6 O.l.f.2. 5" 149.2 g' ' 4 N4" 144.2 glOO 5" O.2.2. l 5" 17o ' g gg [

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1o 134.5 g .5 h 9 104 l1ST 6" MARL-SAMPLED AS HARD GRAY-GREEN 130.: 14 75.7 VERY CLAYEY FINE SANDY SILT p 128,: BORING TERMINATED 2 A REMARKS: SEE Mtv 5-tti F0m Ex*i ANATION OF SYMBOLS AND ASSREVIATIONS U$CO ABOVE

Law Engineening e,1No CD D1 nares S 1-103 Testing Company t #: 5 5;2 " 2'-85 o = =<o JOB NUMBER' Soil Test Boring Record ELEV PENETRATION-BLOWS PER FOOT DESCRIPTION o(PgM (FT) 203.20 5 to 20 30 40 5060 so too BACKFILL-VERY DENSE RED BROWN SILTY 70 SLIGHTLY SILTY FIFE TO MEDUIM SAND g, \\ 198.2 93 g i 193.2 \\ O 131 0 154 188.2 g 4 M 11 " 183.2 g.24 g 102. 5" 178.2 O.l.S.D. 34 " l 9 1.D..Q. 3 173.2 g 157 e 116. 10 " 168.2 g 100 11 " g 170 11 " Ag0 4 163.2 ,g REMARKS: set at, s-ste rom tuotasanom os svusoi s anc assarviat.oNs vsto aeovt ~ - - - - - - - - - - - - - - - - - -

Law Enginee.ing S.T_,o, 5-26c2T-es O m p W ~~~ ~ ~~ o^'t oa'uco 7029 so8 NUMBER Soil Test Boring Record ELEV PENETRATION-BLOWS PER FOOT DEPTH (FT) DESCRIPTION 163.20 to 20 30 40 50 60 80 1000 BACKFILL-VERY DENSE RED BROWN -SLIGHTLY SILTY TO SILTY FINE TO 'MEDUIM SAND g 100 3" 158.2 G12. 0. 0 120. 1ST 6' 153.2 e) 20. 6" OlPC.2 4 148.2 g 100 3 e. O119. 1ST 6 143.2 OIf1 1ST 6 9136 1ST 6 138.2 0 111. 1ST 6 O 1.Q.Q. s" 133.2 IST 6 72.0 73.D MAAL-SAMALED AS VERY HARD

• O DORING TERMINATED 128.2 h

I REMARKS:

• GRAY-GREEN VERY CLAYEY FINE SANDY SILTY OR VERY SILTY F:t.E SANDY CLAY Stf ag. 9 gg. #0* tv% aNacw et svve%S an0 assegra00Ns ;st: a80vt

f' Law Enginee.ing S T_lo. Testing Company BFAING COORDINATES BORING NUW8ER 6->= >>-es n t,T + = o 1Eo - Eo En 100 + 35 JOsNuusER T429 2 3 Soil Test Boring Record ' ace o' ELEV PENETRATION-BLOWS PER FOOT oESCRIPTION DgpTHtFT) 213.90 s to to 30 40 soso so too BACKFILL-DENSE TO VERY DENSE RED BROWN SILTY TO SLIGiTLY SILTY FINE TD PEDIUM SAND 957 i 208.9 ( T \\ \\ k'C h 203.9 5 L 0 i k Ocd 198.9 \\ 9102 6114 193.9 G104 9 120 188.9 9136 0 152 183.9 0153

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Law Engineesing s,_10. Testing-Company - o TE - ';"-'S .,0. -R Soil Test Boring Record ELEV PENETRATION-BLOWS PER FOOT ggM grt) DESCRIPTION 173,9o 3 io go 3o ao sono go,on BACKFILL-VERY DENSE RED BROWN - SILTY TO SLIGHTLY SILTY FINE D MEDIt.11 SAND 5 1/2' 168.9 O 100 5" 1 O 99 5 1/2 163.9 .l.O.2, 5 1/2" g 185 11 158.9 g100 6" O 19.9. 6" 153.9 O 1.Q9-5 1/2 0 100 5 1/2 148.9 O 1Q9. 3" O 199. 4 143.9 O .g.g, 1 4.. O 1.99. 5" 138.9 3 1/2' O 1.Q.Q. s* 5 t 8 80 133 4 gg REMARKS: stt atv s-tet ren am*~4tio o sousou a~o *e aiv.ar o% uno meu a

Law Engineeisng m m,SPT'-104 i Testing Company s->=12-es .TE oR E. joe NUMBER 7429 3 Soil Test Boring Record Paos a ELEY PENETRATION-BLOWS PER FOOT oEPTHtFT) DEWAIPTION 133.90 5 10 20 30 40 50 60 80 100 BACKFILL-VERY DENSE SILTY TO SLIGHTLY SILTY IFtE TO MEDIUM SAND G 100 5" l 128.9 85 e199-51/2,.{ CEPENT-PROBABLY LEAN FILL FOR LEVELING-LOW AREAS 88 MARL-SAMPLED AS VERY HARD GRAY" 89.5 123.9 d BORING TERMINATED .,w -n e H I REMARKS: ' GREEN VERY CLAYEY FINE SANDY SILT !!! KEY $ MEET FOR (RP ANATION OF SvhaBOL$ AND AbsaEviaisons ySED abovE L

Law Engineering BerNo comormTES s,_10s Testing Company "l I'i. O + ' 5;2;2852'-85 -E ~Eo Soil Test Boring Record ' ^ ' ELEV PENETRATION-BLOWS PER FOOT 9H gTI DESCRIPTION 216.30 s to 20 ao 40 soso ao 100 DACKFILL-VERY DENSE RED BROWN SLIGHTLY SILTY TO SILTY FItE TO MEDILN SAND -9 110 / 211.3 Us / w \\\\ B 3@ \\ 206.3 9 \\ g195 10" 201.3 9154 4 141 196.3 g 175 11 g 187 10" 191.3 g 157 0 105 10 " 186.3 g 1g7 11 " O 129. 5" 181.3 gg 6 1/2 c, O 1.LC. { IST 6' 40 176.3 a 9 LQq REMARKS: 6" $44 at' t,atEt som gapt ANArioN os svu80LS Aho AB8mEviATloNS USED A80vt

Law Engineering SRT-1 = _,_ R Testing Company '-2;2*'2'-*S a '=== .,0. = ER Soil Test Boring Record ELEY PENETRATIO48 LOWS PER FOOT pegg (FT) DESCRIPTION 176.30 10 20 30 40 5060 80 100 O BACKFILL-VERY DENSE RED BROWN -SLIGHTLY SILTY TO SILTY FItE TO ' MEDIUM SAND G 100 n u 171.3 g 3 g5 11" 9 100 4" 166.3 0 19.0. 5" 4 175 161.3 j_0Q Q g IST 6 9 121 9 156.3 9 100 IST f G 1Q9. 5 151.2 gg 1ST C 9 112* 1ST E 146.2 g IST f O 12.Q.* 15T C 141.2 g go 1ST ! 0 1.1.2* A IST e i 136.: a nn O 1c7 l REMARKS:

• BLOWS IN EXCESS OF 100 WERE DELIVERED FOR ADVANCING THE SPLIT-SPOON IST e SAMPLER TW FULL 6" QF THE FIRST SAMPL4NG INTERVAL IN ORDER TO OBTAIN SUFFICIENT RECOVERY TO PERMIT VISUAL INSPECTION OF THE SOIL sig att seetET 90m En'taNAT'ON OF svueOLS AND asenEviatiONs v$to aeove

Law Engineering SRT-1oS BORING NUMSER Te~ sting Company s-2' 28 29-8s -1E -luEo 7429 Joe NUMSER Soil Test Boring Record '^os DEDIPTION 13gEV.3 o s to 20 30 40 5060 so 100 E PENETRATION BLOWS PER FOOT gPTM (ST) e BACKFILL-VERY DENSE LIGHT BROWN -SILTY FINE TO MEDILJ4 SAND e ni* IST 6 l l 171.7 g 1ST 6 g 138* 1ST 6 g 17e* in 7 h1S 6 91.0 MARL-SAMPLED AS GRAY GREEN VERY I 93.0 STLTY PIPE SANDY CLAY WTTH SEAMS

• G 1,40, 11 "

BORING TERMINATED l t A REMARKS. *

• CEMENTED FINE SAND e BLOWS IN EXCESS OF 100 WERE DELIVERED FOR ADVANCING THE SPLIT-SPOON SAMALER THE 1:ULL 6 " OF TFE FIRST SAMPLING INTERVAL IN ORDER TO OBTAIN SUFFICIENT RECOVERY TO PERMIT VISUAL INSPECTION OF THE SOIL.

saa as, v.sar eoa sma=ar.o= os svueots ano asemov.arions usco aso.

Law Engineering ,,1No como T S, SnT-loe Testing Company "E:' e' + to s-2'-as ~ -E -Eo 92 + 70 7429 Soil Test Boring Record '^a' o' ELEV PENETRATION-8 LOWS PER FOOT %PTH(FT) DESCRIPTION 211.8@ 5 10 20 30 40 50 60 80 100 BACKFILL-VERY DENSE RED BROWN SILTY TO SLIGHTLY SILTY FIT TO TDIUM SAND 8 206.8 \\ G iqg_ 12" 201.8 OM /12" 95 I 196.8 \\ein 11 " OM 12" 191.8 e ifi 12" q 145 12" 186.8 l51/2' 77.2 9 1QQ BORING TERMIMATED* 181.8 e. i I REMARKS: eBORING TERMINATED DUE TO PRESENCE OF MECHANICAL DUCTS. BOREHOLE WAS GRO'.JTED WITH 3 BAGS OF CEMENT AND 22.5 GALS OF WATER. L&t sie Satti f on aa%a%Af'ON 08 Svue0tl AND atentviafiosos ultD aeovt

Lew Engineering someNG NUMSER SM-106A eSting-Company ~ _ BORING COORDINATES 5-24.25-85 N. 83 + 26.25 o4Te oRuno 7429 E 92 + 82 Joe NuustR Soil Test Boring Record a^o< 2 3 O-YPTH (FT) DESCRIPflON ETRATMBLOM MR FOOT 210.7 0 5 to 20 30 40 soso ao 100 _ WASH BCRING FROM 0 - 31.5 FEET 205.7 200.7 195.7 190.7 185.7 180.7 31.5 BACKFILL-VERY DENSE RED BROWN SLIGHrLY TO SILTY FINE TO 188 PEDILM SAND 10h "- 175.7 gg 5" e 10.2. g 4.5 " .~ g .66 -6 . !vn.7 3gg REMARKS-3" I .......,,0.....,_...............,_,.o.... l ,.myp.r -e-y---. ,$we-,m -w,- -w- . - - - - - = =vwa---

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Law Engineering son.wo NumeER SDT-106A Testing-Company ~ - --- om -Eo 5-2* 2s-as 7429 a m, Soil Test Boring Record '^a' o' Q$fflitFT) DED* Tim ELEV PENETRATION-8 LOWS PER FOOT 170.7 0 5 to 20 30 40 50 60 60 100 BACKFILL-VERY DENSE RED BROWN SILTY O l JO SLIGHTLY SILTY FIRE TO MEDIUM SAND g 100 3" 165.7 g 51/2" M 5" 160.7 6100 5" OM 3" 155.7 3g 6" 19.9. 4" 150.7

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• M 31/2" 140.7
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• 1X.'

6" aa c 130.7 gg REMARKS: 6" SEE alv Satt? FCm tap ANAfiQM QS $vugCL$ AND AggA(vsAYpONS gg(Q AgQwg L

Law Engineering S T-Io A --Testing--Company 5-2* 25-es o.rE oEo ,,e Soil Test Boring Record P^os 3 or 3 ELEY PEPeETRATION-BLOWS PE. FOOT Eh (FT) DEERtPTim 130.7 0 5 to 20 30 40 sono ao too 81.0 BACKFILL-VERY DENSE RED BROWN * ]lO }4ARL-SAMPLED AS VERY HARD GRAY f GREEN VERY CLAYEY F-tE SANDY *

• g g' 83.0 BORING TERMINATED 125.7 l

l l 1 C 3 A REMARKS:

• TO SLIGHTLY SILTY FINE TO MEDIUM SAND
  • SILT OR VERY SILTY FINE SANDY CLAY

$11 Ktv SMEET FOm EsPL ANAT40m os SvueOL5 AND ABeatviAfiONS USED A80vt

Law Engineering 'w:ar= mo=1"^TEs N 76 + 70 m NunasEn SDT-107 Testing Company Ei~92 + o 5g2223-es o TE o.<<Eo Soil Test Boring Record ppTHarfs oESCRMION ELEV PENETRATIO4BtOWS PER FOOT 202.0 0 5 10 20 30 40 50 60 80 100 BACKl:ILL - VERY DENSE RED BROWN SILTY TC SLIGHTLY SILTY FIE TO E E6 U 397,g TL w \\ \\ s 0 114 192.0 gg g 144 I i / 187.0 34 3-r \\ \\ l 182.0 ',373 l 9" 9 187 11 " 177.0 g 37, lo" 9 138 i 172.0 gg 10 " 9 100 5 1/2" 167.0 i 9 100 f 4" e ico l f 6" s 40.0 a g 170 REMARKS: l I I l $11 at? SMitt Fom taptamation op svueots aNC asent viatsoNS t,sto aeovt l

s s Law Engineering BWM CT@INATES -Testing-Company en: - eORweG NunassR SAT-107 w N 76 + 70 2 + A0 Om -E. 5-21.22.23-e5 7429 m m, Sou Test Boring Record Pace OF ELEV PENETRATION 8 LOWS PER FOOT DEPTM(FT) DESCRIPTION 162.0 o e to 20 30 40 sono ao too w n g ,5 BACKFILL-VERY DENSE SILTY TO SLIGHTL $1LTY FINE TD PEDIUM SAND k,# g ? '- '.. 1 e 12.9. p,.i -' Y. i 0 ['. ! g:, 4 1/2 +, ::<. 6A 157.2 '..I 1 4 100

.; -l 1

5" [.5,9 ':. N ?z..P O 122, ...[ ' :('. - l, 5" ,. - { 'h 'i.: *. 152.2 I.. ;. W 9 1,0Q, Q g 5" b-3."--1, c, '1 3 -s/y G jog {, i s 5" M., '.. D:, 147.2 ,..a- .. V - @ )_0g,

b...,,:. ?

q . -[3. 7.' 7 n a ?).. - } O 1.SS. Y 4n ..e, : 3. .,[ M ". v 3 142.2 .A + b*

• ].9.Q

_ i 3 1/2' [# ', ..j ':.2... O ESS. 'd;.ll, ;. 3 1/2' "=r.p.e 2 f w, '< ; 137.2 i r 4 '* y x. ,4 9 3_qoq .?,- re, 5 1/2" O ISS. ~C:2.A.% ,% 'i.9 5" , J.t M,'" 1-a x - g :.: 132.2 t.^f #

• 1SS.

y.$ . }':*. k. .~ - us-Nfp',.id 5" b b..'-215'.4 127.2 q3y .i 4e.,.cx,s.. ; 76.0 5 1/2 % ';'/?. g; MAAL-SAMPLED AS GRAY GAEEN VERY* 77.0 '; j;{: f., y,. 1, g 185 h BORING TERMINATED E 10 1/2' J. ,. ((h; ri c'- y 125.? kr ;, ?, REMARKS:

• CLAYEY FINE SANDY SILT

__.u .......- u,,0... ,~.

Oh Oh%, Oh BORING COORDINATES SPT-108 -Testing Company-- N. commo NU68SER 83 + lo o TE -Eo e-12 c >>-es En 101 + 00 7429 m wn Sou Test Boring Record ELEV PENETRATsON-8 LOWS PER FOOT DEMH (FT) oESCRIMION 220.50 5 10 20 30 40 soso so too 0.0 TEMPORARY BACKFILL

• FIRM RED -

BROWN SLIGHTLY SILTY FINE TO 14 MEDIUM SAto 3.5 ~ ~ ~ ~ 5 BACKFILL - DtENSE TO VERY DENSE 215.5 RED BROWN SILTY TO SLIGHTLY SILTY FItE TO MEDIUM SAND 4 7 N N 210.5 w / 62 205.5 \\.u 200.5 91 a 5 \\106 e i 195.5 2 92 7 \\ 123 e / 190.5 h 92 \\ 108 g 185.5 y 11 " e e15.1 f 11 1/2' g 40.0 100.5 e 138 REMARKS:

• PLACED TO PROVIDE ACCESS TO BORING Stt utv Satti Fon gueta%ation os s,wsots amo aseatviaisons uSto aeovt

.J Law Engineering s.1_loe -Testing Company ~ ' c =>'- o 6-2 2" '-*5 M NuadSER 7429 Soil Test Boring Record ELEY PENETRATION 8 LOWS PER FOOT H(FT) DESCRIPTION 3gn,m0 10 20 30 40 50 60 80 100 4 4 BACKFILL-VERY DENSE RED-BROWN ! SLIGHTLY SILTY FIME TO MEDIUM SANC I 0 21 1 175.5 g. 11 1/2 g 191 10 170.5 37, ~ 11 "

• 173 165.5 gl,82 11" 419A 5 1/2' 160.5 410A 5"

4 10.2 6" 155.5

• 1#

em " 4 1/2 150.5 9 19.2 5 1/2"

• LQ.Q.

4 1/2" 145.5

1. M..

4 )

• LQ.9.

5 1/2" eo ,,- e

e3gg, REMARKS; 3..

$tt utv Smit? FOm EnN ANafeO4 OP SYM80LS AND A888EWaf'ON5 ust0 A80=t

Law Engineering SRT-10e -Testing Company--- ~ iNO -R o TE -uEo e- -as a mn 742) Soil Test Boring Record '^ ' ELEY PENETRATION-8 LOWS PER FOOT ogg grt) DESCRfPTION 140.5 o s to 20 30 40 sono 80 too BACKFILL-VERY DENSE RED-BRDWN

SLIGHTLY SILTY FINE TO MEDIUM SAND

@4 135.5 N5 %l4" 00 59.3 MARL-SAMPLED AS VERY HARD GRAY 130.5 f0 58 90.5 4REEN VERY SILTY FINE SANDY C yLA BDRING TERMINATED h* I REMARKS: $11 NEY $>*ECT FOm EsAa%AteoN op svuaots AND AesatviaisONS ustD aeova

.. j Law Engineering emIm mr TeS

,,, _, S T-109 'gTesting-Company 7, ;;:1 =El

j;7'a-85 Soil Test Boring Record ELEV PENETRATION-8 LOWS PER FOOT f

9 M irT) uscaiPTim 209.0 o s to 20 30 40 soso so 100 i i BACKFILL DENSE TO VERY DENSE RED- ~ BROWN SLIGHTLY SILTY TO SILTY FIE TO MEDIUM SAND 9 3 s 204.0 ] s, m / / / Gy 9 \\ 199.0 \\ d 99 t / (p 80 194.0 } tv - / 6,$ \\ 1...c l .m B '\\ 184.0 or \\ O lli 179.0 g104

1. 154 1T4.0 0 174 11

3176 [ e g 40 169.0 g 110 REMARKS: $tt utY Sntti f On IaptANAfiom of SvuSOLS ANO A88mEvtAttoNS US(D A80vt

Law Engineaing S.,_10, .O. - R Testing Company -- -e-e. 7c 8-85 -1E -luto 7429 m NuusER '^o* Soil Test Boring Record ELEY PENETRATION BLOWS PER FOOT M g (M) DESCRIPTION 169.0o 5 to .7 30 '40 sono ao 100e BACKFILL-VERY DENSE RED-BROWN SLIGHTLY SILTY TO SILTY FItE TO g377 MEDILM SAND 164.0 OM loh SJJL 1 1' ' 159.0 5*' 0 100 5" 154.0 e1LT. 10 elP@- 5" 149.0

• W 5

e lfj2. IST 6 144.o eM 1ST 5 M 5 139.0 4 e192 IST 4 134.0 9125 IST 6 0 19,0 o 8 J 5" 8 --~ E 79.0 os g !iUIL-SAMPLED AS VERY HARD GRAY

• 129.n 80.t BO3ING TERMINATED a

REMARKS:

• Green very clayey fine sandy silt.

Law Engineering BORING COORDINATES N NUte9ER S T-110 Testing. Company N,82 + 4s 6-m -8s o.TE -mo En 200 + 80 m NunseER 7429 Soil Test Boring Record Paat i O, 3 ELEV PENETRATION-8 LOWS PER FOOT DE^PTH (PT) DESCRIPTION 219 0 s to 20 30 40 som ao too BACKFILL-DENSE TO VERY DENSE - IRED BROWN SLIGiTLY SILTY TO SILTY FINE TO EDIUM SAND O 32 s\\ 214 \\ au 58 0 200 a, \\ 8dD 204 M \\ \\ N 'e 105 / 199 ')9 g 110 / ,194 f \\ O'128 189 e los

1. '130 e 102 5

e 105 00 ) 179 e 111 REMARKS: SEE RET SMitt f on ta*L ANAYeoN op svueOLS AND Asamtv AtlCNS USED Aeovs

1 Law Engineering S,Y_,,o Testing-Company---~ 5-3-"- a s m NumetR 7429 Soil Test Boring Record ELEY PENETRATION-8 LOWS PER FOOT oegg(r7: DESCRIPTION 179 0 5 to 20 30 40 50eo 80 100 _ BACKFILL-VERY DENSE RED BROWN SLIG4TLY SILTY TO SILTY FIPE TO MEDIUM SAND G 123 174 g154 e 12.0. 11 169 g156 g146 164 t----- g159 I o 129.. 3.- 159

• Mtob" e lah 4"

154 em 11 "

• m I ST 6 "

149 167 g 812D. 1ST 6 " 144 ,g 4..

1. 10f.

e 8 d 4 g so 130 gg REMARKS: 5" ser at, saart roa ama~avio o, sn. sots a=o sesaaviatio=s usto aeove

p. Law Engineering s.,_11, .O e.o,R ER -Testing Company 6-3ca-8s -TE o.uto a wn 7429 Soil Test Boring Record 3 3 aaot 0, oEyg FT) DESC. M m ELEV PEWTRATIOk8 LOWS PER FOOT 139 0 S to 20 30 40 50 00 80 100e BACKFILL-VERY DENSE RED BRG4N - SLIGHTLY SILTY TO SILTY FIE TO TDIL.N SAND Og 43" 1 134 .,9 .m 89.0 4" 90.0 MARL SAMPLED AS VERY HARD GRAY * .' m '.*d BORING TERMINATED AT 90.0 FEET 2" t I REMARKS:

• GREEN VERY CLAYEY FINE SANDY Oc VERY CLAYEY FINE SANDY S!LT Sgt att SMtti FCs 6ahamatioN os svueots amo assag yeaf'ONS utgD aeovt

APPENDII B GEOLOGIC DRILL LOGS 900 808 LT-1B 901 809 LT-1A 902 LT-12 903 LT-13 904 904A 9048 905

,/}% ( Of N,/ PRBJECT JOB ug. SEET BEL MILE IEL GE %IC ILL VU V0GTLE ELECTRtc GENERATING PLANT 9518 1 0F 2 988 st1E CoWEBm118 anaE FROM HORIL REWWG j. SIRJTWA67 0F POWER ALOCK N 7538 E 19119.5 is* WESI GDFLETED Wit.LER WEL MANE me MENL MOLE SIR OVEROWWDs FTJ ROCK FTJ T074. OEPTN S/4/06 s/20/05 KEN THAES/ LAW ENGINEERING FAILING 1588 9 7/8 IN. 92.4 FT. 58 FT. 142.4 FT. cent mecausRvef.no ceu amas eartas st. rop or casas oRowe e etP1wtL.cnome artR oEPfwEL. TOP OF ROCK SGRU 49.5/99E e 218J5 FT. 214.3 FT. 100.95 FT./117.28 FT.(7/16/06) 92J FT./123.7 FT. l GesLE MmeER 143D87#aLL Ca0BS LEFT as MELEs01A@efit Legged gre SEE OBSERVATION WELL REPORT L.R. EST 1 I 13 l PlW88WE g NOTES cit g W l Tests a efe Levets, I C 5 naveras. DestserTan me cuemFicartam unrtR suTwe6 5 I i1 l3lll I'$ 3 I"g cn nner:R Gr "'""c-g l I ".'I) SJ - 92.6 FT. nemen t. ROCK 81T ORILLING f '. t,1 SEE LOG W SFT-iss WITH I REVEftT/ WATER ,,I :

• f, DRILLING FLUID j

o l

. :, f 5,!. E "l' * # 'f. 2a / [,- - .. :o, a. N ~N N: / N N %..'.s l / l ~ 't.I ;

:;t -i 9e.. llf

3(

/ .

• ll f

o.

12 3.7 4 7*8 -Y~S 92.8 - 142.8 FT. At4GLs CORE ORILLING WITH ];. .M' OARK SLUE GRAY StLTY CALCAREQUS CL AY. CLEAR WATER AS ,y F181M TO MODERATELY HARO.LOCALL Y FIE ORILLING FLUID 9.3 95.,.- SAN 0Y CLAY TVICK LIMESTONE NODULES 5J 2A' 4eX

1. e0 LENSES. LOCAL QTSTERSHELL 20E S.

88 94.5 ANO 98-17J FT. 0YSTER SHELLS 120 . 9 8' E 'f~ 2.s ga ..Q 2J 4.6* 230X .N 188J = 100.8 FT. LARGE OYSTER SHELL geg'. 5.5 . A-FRAcTUREo FROM DRILLING 94.2 FT. ANO [EMENTED 6 INTECL C Q . Y *. 97.85 FT. ]2.7 .g 182.8 - t815 FT HmRO $ANDY LIMESTONE OEPTH OF 182.6 FT. 3J 14e ISLX a in g i.15 - i.4..,T. n SANOT NARL 104.0 - tot FT. MODERATELY SOFT MARL l ] .;.f, OYSTER SWI.L CL Af - BROKEN ON . z. geS. L* REMOVAL FROM CORE BARREL O SJ 3.Ss 70% S h _1.7 ggg .y. i. 0 29 8 6 27.2 e se s 106 = 109 F T. L!MESTOPT. HARO. tANOV 87 .f'r7 FRACTURF0 OUE TO CORING AT 100 FT., 9 49 0 L G. 109 FT.,189.8 FT. ANO L18 FT. 18 3J* 121X 2 5.8 11 0

• 5j l ^ " " "

112 - 112J FT. SANDY LIMESTONE 8

• g.

k.!NG FRACTURES AT 111 FT. AND 111.8 2J M* m 2.R ,.x g E't NEON S3UTH AST OF power BLOCK 900

,rx ( b / i L, Z/ v MuMECT Jam sak sett se. peLE a Gg-gp m1l l 3y L Waw LM1&LL. LvU V0OTLE ELECTRIC OEMRATING PLANT 9 518 2y 2 9e8 1 uma wI 1 I 1 MESOldlE o sofES Oph [ g TESTS 5 WTER LEVELS. s.svaries gEsauPflon me CLaserraftes M fER RETWut g 1 i l g ounacTER w g.l lAa E In4 3 ana.Lae.Eic. 3 g a. s 1.5 -Y. LIMESTONE AT U4 FT It4.4 FT u5.5 vftrr3 2.7 FT 118 - 117.2 FT. SJ 5.f 1884 115fE 2.3 na: 11 s de is gag FRACTURES FROM CORING 110 FT.,119 FT., 3.3 119.3 FT AND 119.4 - 123.2 FT. 8 58 18 ~.. 118.2 FT.- 119.2 FT. LIMESTONE N00ULES ~ 2.9 qe* 3J .b., SA 5.3 tagx _3.8 4.6 "M 121.8 - 122.2 FT. LIMESTONE' 3.4 " M 7."f ~ 123.4 - 123.5 FT. SILTY.HARO MARL w 4.8 g ~M-124 - 125.5 FT. LIMESTONE 8 .3

3g 5.8 5A 180X 4.9 II$~@

2 5. + 7 127.8 - 128 FT SILTY.HARD MARL b 8 88 8 2.9 "N 120 - 129.7 FT. LIMEY O 78 8 .~. ~ - ry, 129.7 - 138.4 FT. SOFT PLASTIC ] 8 gg ",. - 138.6 - 132.6 FT. SILTY MARL z .,/f:;q, SA 5A leWX !.8 I t.

9-132.s - 137.s FT. FtRM. SANDY G2 o

M ~ L6 -.'y* 2.7 ,.a. LD(Y AT 133.4 FT 134.5 - 135 FT. 5.8 4.8 96% L5 ID u 5. le se

-s L5 137.8 - 142A FT. FIRM. SILTY g

gg gg 1.4 [ *f d., e 7e is . g 5.8 5.4 100X 3.8 N[. .~. 1.9 2.5 73,7 SOTTOM OF HOLE 142,6 FEET POA005 STONt, (CASACRANDE)PIEZONETER tNSTALLED IN HOLE.0 PEN INTEMVAL 133.8 FEET - 14d.7 FEET. au

? ) {-x y/y / PRtutCT JOB NtL SHEET NO. W NO. GE0 LOGIC ORILL LOG V0GTLE ELECTRIC GENERATING Pt. ANT 9518 1 0F 2 9 81 stTE CosmenfES ANGLE FRIM M5t!Z. SEARBG SE OF POWER BLOCK N 7538 E 18184.5 98* EEN CGS.ETED CRE.LER CpttLL IOKE ABC MIEL MLE SIZE OWUleLMtEN FTJ ROCM FTJ TOTAL DEPTH 6/21/86 7/7/85 H. COLLINS / LAW ENGINEERING MOBILE 53 9-7/8 IN. 91.62 FT. 37.4 FT. 128.8 FT. CGE RECOWUtVf f./13 C!mE B0nts sesetts EL. TOP OF CAEDG G1000 EL. (EPTM/EL.OROWO MfDt DEPTH /EL. TOP OF ROCK OufU 33.8/93E 5 228.75 FT. 215.58 FT. 181.57 FT./119.18 FT.17/16/85) 9L62/123.96 FT. effeLE semesR ta30Mf84LL CAeBS LEFT IN NOLEaDIA./LDETH LOOGED BYs SEE OBSERVATION WELL REPORT L.R. WEST l l w N88WlE {l g NOTES ON: gJ g TESTS g M TER LEVELS. 1 g ELEVAr10m W OESCRIPT10N me (1 AssIFICAT10N MTER RETWWL g f O b !! il g M p 91 CHafwTER OF h 8.8 - 91.62 FT. BACKFILLS ROCKBIT ORILLING ?/ SEE LOG OF SPT-lW5 WT T TER ~..* s t 5-. lo:. k E ~ N N;%. /g ~N /,~ N \\ / lN s = o.' / 98-38 91.62 - 128.8 FT. 288L; CORE ORILLING WITH 2.5 2.2a 88X 5.2 BLUE GRAY. SILTY. CALCAREOUS CLAY FIRM CLEAR WATER AS TO MODERATELY HAR0: LOCAL LIMESTONE ORILLING FLUIO. ~ 9N '9NFk. ' STONE. GRAY HARO. 2A D[ "T.i. 95.25 - 95.75 FT. SANDY CLAY. CALCAR-5.5 EDUS.HARD. 5.8 4.8* 96% .L-28 .tr,.! 95.75 - 99.1 FT. OYSTER SHELLS. {.? 2.3 2.3

o*,~

5.8 .A* 99.6 - 100.3 FT. LIMESTONE NODULES. lgg, o.i SMALL UMESTONE NODULE AT 100.5 FT. CEMENTED G (N. 2.9 3.2a 11 8 % . C.~ 188.5 - 182.8 FT. OYSTER SHELLS. OEPTH OF 102.7 FT. STEEL CASINO TO d8 3.1 LINESTONE NODULE AT 182.5 FT. [; 1.1, Ih OYSTER SHELLS AT 183.8 FT. .5 g 3.8 1.4

• 47%

M.' ~. 8 2 f~ f 1g5 105.8 - 186.5 FT. SOFT. PLASTIC.

As

'8 8 = "5 iOS.8 - 185.3 rr. Sitiv 107.3 - 107.9 FT. LIMESTONE. SILTY qa (T. AT TOP AND'80TTOM. 4.8 4.4 * !!8% . -.m 27 - g-. 109.8 - 189.6 FT. LIMESTONE NODULES 5.1 .g SHELLS AT 181.6 FT. I 113.s - 110.35 FT. S!LTY LIMESTONE 2".', NODULE AT 112.9 - 113.2 FY.112.0 - 112.4 118.7. 111.4. I!!.7 3.1 LIMESTONE LIMESTONE 5.8 5.8 108% .~ T0 ti4.8 FT. ,-,,a 'APeasuwt CcmE are0vERv. c mE sLIPPtn Twnau@ SifE W N). jam segsiomance tu cLL PtCxEn tr CN SE OF POWER BLOCK 981

,,\\- ,/ (N j(;j -M NOT NOD I I np RWJECT JOS N(L SMEET N(L HOLE MO. UL UUA UnsLL LUU v0GTLE ELECTRIC GENERATING PLANT 9518 2 or 2 981 unTER IZ l g NM NOTES Oph gl y rests or R una. I ELEvmillBs OESOUPTION #6 CLASSFICAT138 WATER RETWOL = g h C4AACTER OF g i g pg,a 9 i 4.7 ..m #. '= 4,3 2.4 115.0 - 115.4 FT. LIPESTONE NODULES 2.5

g --

11E.4 - 117.9 FT. LIMEY AND SILTY Nnnia F AT 117A FT. AND 118.6 FT. 2.6 4.8 4J ISSX 6.6 -7; g 4g 3g 5Thj 119.8 - 129.5 FT. LIMESTONE.HARD. SOLID 8 13.2 gg, E t2.- sity, _121., 122.2 FT. 7., 5J 5J 10 0 % 0 58 19 PLASTIC - 122.2 - 123.8 FT. 2.1 2.8 [y,7 SILTY - 123.5 - 124A FT. ~ ~~ LIMESTONE NODULE AT 124.2 FT. 3.2 8 68 le 3.7 125[ HARD SAN 0Y LIMESTONE 125.9 - 126.0 FT. 7.5 -h SOFT TO SILTY - 127.9 - 128J FT. 4A 3.8 95% 8.3 - T, 3.4 - 'L" : BOTTOM OF HOLE 128.8 FT. POROUS STONE (CASAGRANDO PIE 20 METER ~ INSTALLED IN HOLE. ~ OPEN INTERVAL 122.3 - 128.9 FT. I

• appssuht cone nEcowev. cont SLIPero twoours SITE MCLE PC.

CCR8 CPE REmapeso De MOLE. PICKED LlP ON SE OF POWER BLOCK 901

~,r [ ] '-~ j m uECT as a swET = w0u e GEOLOGIC ORILL LOG vacu nECTRIC GENERATmG etaNT 951. 0, 1 92 stTE COMDetATEg HEE FROM HOR!L BEARING SE OF POWER BLOCK N 7543.5 E 18118.5 og* WIMt CGrLETED MR1M ist1LL MAKE NO MmlEL HOLE SUE OvegupWDs FTJ n0CK FTJ TOTAL DEPTH 6/23/85 7/3/8'5 H. COLLINS / LAW ENGINEERING MOBILE 53 9-7/8 IN. 91.0 FT. 17.0 FT, 108.9 FT. com astoutRver./10 com e0xEs sasetEs EL. TOP OP cmuMG On0UW EL. DEPTH /EL.Glot#O WATER DEPTH /EL. TOP OF n0CK Mnu 15.6/95x 2 221.11 FT. 215.97 FT. 94.85 FT./126.26 FT.(7/16/85) 91/124.97 smerLE Mmeet WIDff/FM.L CA$De LEPT De HOLE 01A./LENGTM I Nm BW SEE 00SERVATION WELL REPORT L.R. WEST WATER PfESENE NOTES ON f g TESTS WATER LEALS. ELEVATION DESCRPTION WO CLASSFICATION WATER RETlftN. 5 g I casucTER OP g Ste; egy SEE LOG OF -t WATER ORILLING I 3.8 - 9L9 FT. ORILLEO WTTH ROCK 81T ANO REVERT / ~.*., - FLUIO. a 5-g e N ^%N: / p ', s " d-s" ~% N p / .h.s 99-... 6.7 .7-91.5 - 108.9 FT. MARu CORE ORILLING WITH Q BLUE GRAY. SILTY CALCARE0US CLAY. FIRM CLEAR WATER AS 5.8 -N TO MODERATELY HARO: LOCAL LIMESTONE ORILLING FLU 10. N00ULES AND LENSES. .--~* 5.8 4.7 94X 12.3 93.4 - M0 FT. LIMEST0t.ei. SANDY. LEFT 1.3 FT.IN A,I e 95.0 - %2 FT. CLAYEY. PLASTIC.FEW HOLE. PICKE0 UP 3.8 95 d OYSTER SHELLS. ON SECONO TRY. 95.2 - 96.5 FT. FIRM. SANDY CLAY WITH 6.8 ABUNDANT OYSTER SHELLS. J) 96.5 - 98.3 FT. HARD. ABUNDANT SHELLS. 5.8 HIGHLY FRACTURED BY CORING. 3.5 2.9 83% "I.- 98.7 - 190.8 FT. SOFT.PLA3 TIC. g ae 7.1 [ [1 CEMENTED 6 IN. gg,7 ."/ STEEL CASING TO O ggg.q/ 100.0 - 100.3 FT. $!LTY CLAY. DEPTH OF 100.0 FT. l 7-PLASTIC TO 182.25. O 48 10 l3 102.25 - 103.9 FT. LIMESTONE. SILTY CLAY. I 5.s 5.5 iss% q,3 . y-SHELLS. I 183.8 - 185.0 FT. PLASTIC VITH ABUNDANT gl 3,3 0 50 18 105.8 - 105.2 FT. HARD SAN 0Y CLAY. 2.3 .v e 6e t0 les. 2.6 -2.1 105.2 - 108.0 FT. PLASTIC WITH SHELLS. 3.8 3.9 100% 2.8 107.97 80TTCM OF HOLE 108.0 FEET. ~ PORCUS STONE PIEZCMETER INSTALLED IN HOLE. OPEN 1*tTERVAL 101.5 FEET - 108.0 FEET.

• aremeri cost nrc0venv. conr super 0 THmmo SITg MULE NO.

c0nE cattisR.nueuMING 1M HLE. PICKED UP DN SE OF POWER BLOCK 902 Ftutum fUts,

f:x \\ ) ( L 4 wj M4WECT Joe No. SEET E MILE MIL GE OGIC DRILL LOG V0GTLE ELEC.TRIC GENERATING PLANT 9518 1 & 4 983 seit Cosegutts mo6s rueN HoRIL esmous NORTHWEST OF POWER BLOCK N 8440 E 8908 qe* MRSI CEDFLETED (WILLER (ptLL MIKE Me MMEk MEs SIZE OvtReunoEn FfJ NDCK Ft.NARL 70TaL CEPTH 8/10/85 6/23/85 KEN THAMES / LAW ENGINEERING FAILING 1508 9 7/8 IN. 78.8 FT. 55.9 FT. 133 FT. CcRE nEcov5mFT./D CCM SoutS tes#LEs EL. TOP QF CASING GROUS EL. OEPfWEL.GRotse unTER DEPTWEL. TOP OF ROEM ##RU 56J/10s% (MARL) e 4 216,73 FT. 215.75 1a9.61 FT./187.12 FT.t7ss/e!D 78 FT./137.75 FT. tasets Mmeen ameT/ FALL Cases tat se HOLEa014./LENSTH LOOGED Br SEE OBSERVATION WELL REPORT L.R. WEST /J.C. ! SHAM l Il l g m a,.

=

I q I ll uts warER LEvtLs. g C ELEV4THN DEW 4PT104 Age CLA00FICAt!ON WATE4fETUWL I O CwWMCTER OF 0"" EIC* 215.75 SJ - 15J FT. SAN (1 (SM): REVERT M!)tED WITH BROWN TO YELLIV BROWN. S!LTY. MCDIUM WATER USED AS A TO COARSE SAND.SUBANGULAR. DRILLING FLUID IN HARO ORILLING AT 6.9 FT. UPPER SANOS. 2 L!THOLOGIC CES-SJ - 10.8 FT. ME0!UM GRAIN SIZE CRIPTION FROM 0.9 TO 35.8 FT.DASED 5-I8 8

• 15J FT. MEDIUM TO COARSE ON WASH CUTTINGS.

GRAINED ' 8.8 - 12.8 FT. BROWN 12.0 - 15.8 FT. YELLOW BROWN l 2 l g U 15 - g E 15.0 - 2 3.9 FT. CLAL (SCh Y / TAN. SANDY CL AY. FINE TO ME0!UM 8 SUBANGULAR SANDS. TRACE OF OYSTER SHELLS. N Q 29-r e as l D / h /j l 23J - 30.0 FT. - (SM): BROWN. SILTY. TO COARSE SMO 25--. '. ', SUBAhGULAR GRAINS.1% OYSTER SHELLE AE ag. I 38.0 - FT. $&dl(SM-SC): TAN.S!! TY CLAYEY $AND. LOST 198X CIRCUL-ATLION A! 35.8 FT. f b y r en.econv. c0= sur.c) TM. mt is,G. j8d" %"""*8 l' " OLE. men u'

• NonTHWEST OF POWER BLOCK R03

./b = LV mI ILL LW v0GTLE ELECTRIC GDdRATING PLANT 9918 2e4 W3 WL.W I ll

1. Gif t GMb g

l 788 4 unftA Lav5LS. E 3 l lasl! Dl M r! OtStarflou ase Cue 8FICArlon tinto fETWu6 IL85erlem g l !"#.3r&"*4-i n. WancJP-l C 5 MIE AP990NIMATE. M : A T'AN, (C00UINA). F 70 b GRdl C ME ' $ND. 5 i i "i .gg.. n. G.. .c-4 4. 6 ~ Y H.AD CEMENTED Ojf =3 N LAYER 3 i,N.m. " m.,?.u?,,W,' %"". *c* u-r0nn.irraous u n tuttsi l 75 l Ta l ' Q ( I m*E E E '$ I NOATHWCST OF POWCR St0CK '83

a s.. ) l ll ,,/ IM J'8 *

• • t' *
• 8 *

%1CfM)111 LMiaLL LUU V0GTLE ELECTRIC GENERATING PLANT 9518 3 y 4 983 g unsen I "'a"t$ g

• * * =

ti I I r um il 13l EL&9.f30N CESOllPt104 AIEl CLASSIFEAfl0It W.ftR REftstL i 3 IIl W IAI 1 3 = c'c 3 g 13 137.75 5 ~ 70.8 - 13'tJ FT. CLEAR WATER USED SA SLUISH umEE.NISH tmM 70 HARD. AS ORILLING FLUID 5J 4.5s 994 "4."0 1-rALCAREQUS CLAY UNF IURE" 50% FINE IN MARL. so-by CuY 20NEh0CA LIME 3 TONE 5.0 mxuEs a=0 uNsts,inacs 0, oaev emowPs OMOANIC MAITLR.SOME OYSTER 4.3 - d* 84LL3' 62.5 - 84.5 FT. SOF7. MEDIUM CRAth(D 33 SAN 0Y CLAf. TRACE OF SHELLS. "S', 3J 3.S= IlFX 8.8 -Yp! L3 8 O' '%: 6 !N. STEEL CASING e5J - 87.7 FT. SX 7018X $ HELLS. CEMCNTED TO A 9A OEFTH OF 45 FT. 7.'". ~ LIME 5 TONE NODULES Af 46J FT AND is.s e se a e7.7s FT. s.s 3.e-nx E

4 i

g LtmesTONE LtNsts es.2 - es.s FT.

St.S - 48 FT.18% TO 28% SHELLS. l

c..

4.s g 4. 98"

r'

%8

• 91.1 FT. SEvtRAL LIMESTONE l

g !2:s a w a No0utES. 4J ite 70% llJ " r" g.9 - 94J FT. MOMC CLAYEY 10% TO 9 IHELLS' 4.s I SS .",,a i l g 94J - %4 FT. SANotrR.LESS THAN 1.s g. .pg SJ EX SHELLS. 38 8 .'F"k E4 - %7 FT. L!*tsfoNt LtNst. s8

• 33

% 7 - % 8 FT. StytR A LIMESTONE

N00VLts, W

g 15.8 g 3g g S.8 SJ lesX Nil' L:MESTONE LEN9tl Af %l - %4 FT.: e-7J G 46 8 "

• r" 9 7,9 - w25 F t.i n? - 198.1 F T.l ANO 2

~ ' " tre.S = 100.4 FT. 18 8 8 96 0 OsuF m 1 %~;. LIMElt0NE NODULil Af 97.2 FT.: 78 8 49 0 3,, 97.5 FT.181.1 f f.e 101.3 FT.e 101.8 FT.s102.5 WT.s682.9 Pf.s 4 1:J e a e

Ty lose - taas FT.

e.e s.s s.e iseX g

ii-se

,g, 7,

n is.e

..a,n,n. CO.Ne* W to 14.8 i b 8" 9.8 8 43 8 106.2 = 18'1.2 5.8 12* 44X ~ -

• C>

?8_8 8 54 8 'f-6 ~ 11 8 e al e tis;a.L

,b{'

it.s, e [ 8.d a se a " 5", waned Coat SAMPLC 3.0 3.4= 113% 18.8 17.0 .c { e2 112.7 - 113.7 F T. 1]eXllL8 2.8 la un's. ,o,_.N n.'. a 3,,,, n..... mi NORTHWtli 0F POWCR BLCCN

1. 63 I

ggeanw pe pe mag punto w on i

=... -x x )

)

j PI4WECT JOB NO. SMEET E HOLE E GE yI ggg g g ng W UsuLL LUV V00TLE ELECTRIC OEEMTING PLANT 9518 4 y 4 993 g unfin gl l g N efts se g TESTS .rsa =r.ts. mita Laws ii i 1* l ps,a 9l as rm v osiaertoi = usean. ommacrEn w , Y_. LDESTOE NODULES AT 184.9 FT.s 105.7 FT.s 23 3f IIM %8 TEST U [ S 46 8 135.8 - 189.2 FT. ASUNDANT LIEST0E NODULES (20XL 8.5 8 56 8 ~~. 106.8 - 116J FT. LESS THAN SX SHELLS. ~ 5.8 5J 1m SJ - O* m g '"~ LIMESTONE NODULES AT 189.5 - 139.9 FT.: g gg g 118.8 - It!.t FT.s it!.8 - 112.1 FTa 5.8 0 95 8 gg 112.5 - 112.7 FT.:113J - 113.5 FT. y Ape 0 114.7 - 115.8 F T. 9 49 8 ~" I **; 8J s.s s inx ~{ 114.5 - 133J FT. HARO CALCAREQUS ZONE XED CORE SAMPLE 3., r-i.g*ggi, - -T CLASS JAR 3.0 .n 125- $ AMPLE '4 FROM W 131 FT. 18 m DEEP GOUGES O/2 5 3.8 IN.) CAUSED BY TE 4g g -..~O CORE CATCHER FROM E 4A 54 6 .T _ 12tJ - 131.8 FT. ~ l SJ sa teex yj .,,, g I 1.5 -1. 58 e g3 E l5 4e 8 .~ " 2J .=_, 2.5 2.8 180X ~ 2A 62.75 80TTOM 0F HOLE 1318 FEET. POROUS STOE PIE 20 METER PLACED TO A OtPTH OF' 131 FEET. SEE 08stRv4f t0N vfLL REPORT. OPEN INTERVAL FROM 133 FEET TO 127 FEET. m e R S a W i 4 l t G W W e G S e a M e W n n a M a N W ( h h emason pe maa. Pinne w on unRTHwtsT OF PawtR nL0cw 'w3 g et

,c g / ) ? l C) uj/ a np Muurc7 Jos a sHtTT no. par 40. GE neIp noIa V0GTLE ELECTRIC GENERATING PLANT 9518 1 or 3 984 Un LL LUU UU L, st1E caenosinfts meLE FnoM 6EntL EDWENE NW OF POWER BLOCK N 8445 E 8900 90' ERSI C(BWLETED 014LLER (NtR.L Built me IGEL tele SIZE OWpeufEIDs FTJ fl0CK FYJ total DEPTH 7/2/06 7/9/06 W. THAMES / LAW ENGINEERING FAILING 1500 9-7/8 IN. 78.8 FT. 9.2 88.8 FT. cont nst wireMo cent songs sasetts EL.for e castes Gnous a. oEPTwtL.anouc WTEn oEPTWEL.ioP OF n0CK omnu 9.2/180% tMARL) 2 8 215.75 FT. 78.8 FT./136.95 FT. tusu Maest islee/Fau. cassen LFT se McLEsosa/Loame tasoto sys SEE (WSERVATION WELL REPORT J.C. ISHAM { witn i lx N g g NOT,Es opt g 7tsis m gn omg, g W orscurfsom me cLaser: cat 1oM mTrn ntiusel aawfuse l as oestacTU OF l m tTC. !, E. SJ - 5.8 FT. SetEL(SMk WATER MIXED WITH R SILTY.SUOROUNDED.FDE GRAINED REVCRT USEO AS A S (SM). ORILLING MUD FROM 8.5 - 88.8 FT. 5 5.s - 15.s FT. (SMh 7 AN. SILTY. S OUNDED. FINE TO MEDIUM GRAINED SAND (SM). I* LITHOLOUIC DES- ~ CRIPTION FROM 0.0 - 77J FT. SASED ON WASH SAWLES. gg-5 l s l O : s5 15.0 - 35.5 FT. (Sch / TAN. SAN 0Y CLAv. OUNO.ME0!UM To g COARSE GRAINED SANOS. n a 29- //2

/ &.

gs. o ,,6 '

///

/> sof /j / L /; J/

ty/

-/// qsutggatsegns com = . ca., se,,o, ws mu m isecLt.Ptcuto e (n NW OF POVCA DLOCK 984

{ L (,/ s_ - -cr 1. GE0 LOGIC DRILL LOG y0crt,ELEc1Ric - ro. - r ,s. 23 ,.4 g N NOTES 04 gg g C g M TS wtan LgvELS. 2 DESDWTION MC CLAGSFICATION WATER PETUtk ELEMTEM 111 g M 3 P1 M*

• 5 r

SIL Y. F UM.SOME COARSE GRAINED SAND: TRt.CE OF SELLS. 4 ,L,' .s . 1 4 45-48.9 - 78.8 FT. Lfw atnNFn [ TAN TO CRLAM.FOSSILIFERC'rS (C00UINAk HARO TO VERY HARD.SOME CUBROUNDED FINE TO MEDIUM GRAINED CEMENTED SNO. s 1 1 555 S 6 es %2fs"B".cN."Mf WP crWr. VERY HARD DRILLING. 66-: P 9-7

• t 0 0 ILLI ty, g "-

1

!r 11J

• 11.3 FIe 78-1

:t c

.L l

!r yr "I

t fP O W ON NW & @(R AEK 44

/ / ) L O/ J "'"" oortE aEcTRiC OENE n.,eAur " "", y;, GE0 LOGIC DRILL LOG v ~ y I N st l 25 itsis

3 g

g DESCRFi!0N 20 CLAGSFICAT!GN [ 3

• i l l H h Pl ELEV4fMM g

l i lel 24J 78J - 78.8 FT. VERY HARD LIMESTONE -s 2.8 8.4 28X LENBE. 37J 134.95 CEMt m_3 e.-. = _ - ~ STE1 78J - 88J Ff. @LALCAREOUS CLAY. FIRM A ,lld. 08 " DEP LW ORAY.SILIY .3 ' ']". S g{ELY HARO. LIMESTONE NODULES T g 7 78.8 - 79.8 FT. TAN. S!LTY CALCAREOUS Hutt 73,, X 18J 3 22-CLAY HARD.UNFRACTURED. TRACE OF OARK 00N v,3 OROWN ORGANICS. Out Cao S.0 TO 4.8 l w'- 19J - 88.8 FT. GREENISH BLUISH GRAY. On x J+. 81.8 - $2.8 FT. SCVERAL 1/4-IN.01ANCTER INJi 3.8 PYRift CRf3TALS. OF g 4J 4.2 + 195X ' [, 83.2 - 84.4 FT.!$% SHELLS. b

• 0a s8 121.7 S earton or HOLE 88J rEEr.

w. HELE GROUTED. d .Il e a n E W e e a n W V n M S O e a l W I m W 4 / n d W e d

c / / 4 -; 1 na my noT: a y anact Ja a seET m g wa UL. W A UITILL LUU V00TLE ELECTRIC JEMMATING PLANT g51e 3 er 3 934 g unsen g ""*8E ev [l g ...es en

== n g il l has 3 38ll EKMfm M904Pi m 40 CuesF m ' unita m g Ogncta y g = m-I g IJ S.4 294 76J - 78.8 FT. VERY HARD LDESTOIC I'd 5 57e IU CEMENTED 6 DL i 3 ~ -w eLLE ORAY,5IL r. OUS CLAY, FIRE 4 DEPTM & se.s rT. 7eJ - 0$J FT. STEEL CA$1NG TO A M 88

• d 15J y,--

To NamRATEA.T HARD.LIFESTONE Mnru m rt CASING SE*4 RATED NG LINSEL AT A JEPTH OF.. 6 4.7 4J 961 ~1&8 78J FT.Caus!*C A ] [. _ *. 7tJ. 79.8 FT. TAN. SILTY CAL CAREOUs ><lLE TO SE Ae4NK CLAY.HWW.lfFRACTLAqED. TRACE OF DARK OmED. e ~.e . ~. BROWN ORGANICL GROUTED telDE AND E OUf 5fDE OF CAstNG w ". 19J = es.s FT. G4EDd5H BLul$H GRAY. TO GROUPO SURFACE 4.8 ON 7/9/8% 18 ~ eta - 32.s rf. SEVERAL 1/4 DL D!tNETER INJECTED 24 CU.FT. ptRITC CRYSTALL OF lit CENENT/ 4A 4Je 18 5 % Cr WATER GROUT SEE e 4J 312 - 44.4 FT.10% SHELLS DEf1LOCic L0d 9048 d FON CONilm>AT!m. g p in.7s a 90TTON OF HDLE 44J FEET. 90-MLE 0800TfD. G S a e e a e a G e M W e n e u 9 e a N N D a e S 9 m M n m S a e n h n n a M a l a Q b U >

• L Pks80
• ca w 0F P0wtR SLOCK 904 g

.rQ "'s..- GLg= yyp mg 3 3y asJtet Jes a sett a eeLE a WAb LKl&LL LW V0GTLE ELECTRIC GENERAftNG PLANT 9333 3 y 3 934A etR causames mas resi test. esams NW OF POWER BLOCK N $446 E $$dt0 81 0 ' sRei CSFLsfED WELUt IDEJ. pelet ase IEEL pes stJE o C 8 WEEN WTJ flout f fJ 70faL DEFfM 15.8 FT. F/10/06 7/15/06 M.COLLIPet/ LAW ENGINEER]NO M00tLE 53 9-7/8 IN. 15J FT. ~ Com neteuentFf./1e csE some easetas mfor or caeme steWe EL. otPfwth.onswe waftn asPfwtL.for y nota sawu 215.75 F.T ~~ ~ empts neemt e nNf#au casse Lart se sensagewtceth Lagoso ers NONE J.C. ISMAM ~ l mfat El I g NM l#TES St y = . Lawt gLavanes OttoW'flou ase CLAstFKAflas misa MTuu6 i i %< I 3 DI E r i f SA = $.8 FT. ($Mb WATER MDIED WifH ' 4 MD. slLTY, D. FINE CRAINE0. REvtRT USED AS A .,' i f OR[LL[NQ MUO. = s. M l 8l.i'. 5.8 - 15.8 Ff. (SM4 . 3. ], TAN. $ILTY. UNDEO.FINC TO HE0!UM CRAINt0. ..'l ..s t ie. .) ENCouNTE = 0 sEWEn ~ LINE AT A DEPfM P QF 19.8 FT. HOLE A6AN00NEO. Movt0 9.8 Ff.WLtf AND i q STARTED NOLE 9948. a SEE *tede F0M CON-r , ', j TINUAfION. Sm.:M m-t 907 TOM OF HOLE 15.8 FEET. HOLE CROUTED I t I i 4 wame Ull M4 % ,f f gewm[cg. ga w om we W NW OF PowE9 SLOCW

• S4A

[ 'N_ ) ( /) Nj ng3 y enassct Jan mit sett ink McLt a yvpW N UnlLL LW V00fLE ELECTRIC OENER47tNo PLANT 9518 1 72 9048 881E f85WeeME5 asas rese tent 2. stanes NW OF POWER BLOCK N 0464 E 8086 90' ~ ~ WSei Opettfe0 54LLEn cRR.L I4mit see MalEL MnLE teit7stemamens ata seca TotaLoEPTM 7/88/ 06 7/14/06 K CULLINS/ LAW ENGINEERING MOBILE S3 17/8 INL 7s.5 Ft. 28.2 FT. 98.7 FT. OWE secouetvet./m cent auss essetas eL. tea e casse enape EL. stPtwth camse v.its atPtwet. top a notx ousu 215.75 FT. 93.0 FT./122.43 FT.(7/16/053 76/S FT./139.25 FT. 14.7/188X (MARL) 3 5

== testa ameWI stest/ PALL tasse Lart se nasseevismetw Lassen eri SEE 000ERVAfl0N WELL REPORT J.C. ISHAM ~ f min gil l Pasant "8 g ,,,gg g. l 3 m't1 Livtte. E asternes g oteauPflom me CLAetirication mita mies, Ij I g 1 m oenmecita y 4 g l83 l la puu,sautc. l, ' ' SA - SA FT. Smal(Stes TRICONE OhILLINC RED. USING wafer Mixto I.l WlfH REVERT AG A OR!LLINO FLuto FROM SA - e5.8 Ft. 9AN.- no n. sea m. 5-15.8 - 38.5 FT. g.&I, (SC): IAM $4N0f ~N 2 36.5 - 46J PT. $400 ISFe

1. p'~

T AN, / e- ^% N FAN,FOSSIb LNA). hs 06-d

3.~d t

..r 8 .' "..I',' 5 67J FT. LO$f 42.s - 74.5 Ff. CtMtNTED CALCAREQUS CIRcVL ATION. VERY

• '7

$ANOGt0NE.VERf HARO. HARD ORILLINC. 2.3 ~ g gg,g yg = 78.3 FT. vtRf HARD LINESTONE , I .' g 6.8 2.4 48X 2.2 2.3 5 *N..

v..

SA g'.'.*. ,a .t [ 74.9 - 75.0 FT. TAN S!Lf tf0NE LEN6f. 34,3 i.e t.s en mno. m 75= w g is.e b .'j,' 4.s 139 25

T g

y 7s.s - we Ft. 4.5 3.2 FIM TaT d stLfy,C= CaptTUNCO.$0Mt WHlfE $HCLI.HARO.UNFRAC= . LAf e ./,' S. 8) 4A 1 76.5 - 70.0 Ft. TAN. 5 ", 70.8 - 96.7 Ff. CRf tNICH.BLUlt.4 CN.f. g N ,Q l (FMPNit 0 6 (N. 'stra tAstNo to M 7* A OcPTH W 05.0 Ff A W4kCR U$to A1 A / OmfLLING 8LU10 .a FROM es.8 - 96.7 gg. F I. 5.9 6 3d 6 L. M 8 48 8 07.4 - 86.3 Ff. LIMttf0NE N00 TAC. O s.*

• rn s.a e

w e .,yg 'J W 3.s e 4e e .r.:. U F.3 8

• Jul 9

- -E ' tens!sN NW (# POWf R BLO*.M 9048 e

f~ %,1 l ] esuurcT me me, sesT m ea GEOLOGIC DRILL LOG

== m cTarc - RATrNo = T , i. 2 - 2 = 1 1I N g NOTES 014 W8 g y itsit a utta LawsLs. f I C OLiveflon DES (3FTEN Md3 CLA001FEAfl0M mfER lETWOL l is,s n$ 5 i 3 1 i 3,3 4.4 14 7% 4,7 ,4[ 4.4 MARL. SAPPLES: M.2 - H.S FT. M S N N L

• 1 92.3 (JAfD w

I U 82 92.3 - 93.8 2.3 7.8 ~. O h '3 94J (JAR) " N 94.7 - 95.5 FT. LIMESTONE NODULE. g 95 -Qg" 4 94*7 tJAR 3.7 3.7 100X 5.2 5

• 5 96.8 (JAR) 3 u

fs-ii,

[ 00TTON OF HOLE 96.7 FEET. P0ROUS STONE PIEZ0 METER PLACED TO A DEPTH OF 94.7 FEET. OPEN INTERVAL FROM ~ 98.8 FEET TO 96.7 FEET. N I a e G W e N l i 4 M e a e n e 1 6 l l \\ l I a e S W m 9 M n a W n M N 4 M 4 m e G W W4 W hl 0 FMEXd Nf( M$ gggeamanan se mar, escuo w on w or P0wn stocx 9e4a 1

GEOLOGIC DRILL LOG V0GTLE ELECTRIC GENERATING PLANT 9510 1 0F 4 905 site COC10pt4TES ~ geGLE FIOt HORIZ. SENUNG NW OF POWER OLOCK H 8450 E 8900 90' coue exzfLETED OR RER ORh puwE NO MIR Haut SIZE OVER9mra &D MXX TOM. 'IPTR 6/23/85 7/9/85 H. COLLINS / LAW ENGDEERING FAILING 1500 9-7/8 IN. 77.3 FT. 38.7 FT. 116.0 FT. cow. EC0vERTFT.no C w ocxEs sasetEs EL.Ty w Cas!NG 20u0 EL. OEPTHAL.20U43 WATER DEPTWEl TCP OF ROCX *WU 37.6/96% 5 6 215.75 FT. 106.21 FT./110.5 FT.(7/'9/85) 77.3 FT./138.45 FT. sapetz wooet w1GHT/ Fat Casse LEFT pe MOLES 01A./LDCTM LOOGED SY: SEE OBSERVATION WELL REPORT J.C. ! SHAM 8 WTEA j gg 3 PESSWE NOTES cre l gg a C g TESTS vnygn tgygts, W aEvaTm CEscuPTION APO CLASSIFICATION WATER RETUW. 0 $ W E g h CHARA;TER OF Y hl fb l 3 3 E 21 % 7 5 0.0 - 5.0 FT. Sata (SM): WATER MIXED WITH ..j RED. SIL1 Y. SWROUNDEO. FINE GRAINED. REVERT USED AS A ORfLLING FLUID FROM 0.0 - 77.0 F T. ~ 210.75 5 . 't *

• 5.0 - 15.0 FT. jLA_NH (SM):

TAN.S!LTY.SUBROUNDED. FINE TO MEDIUM GRAINED. .i, i t -l . 1: 4 14- -t 'p 10 - E 1 d / E T. 5 u 4 LITHOLOGIC DES- / 15.0 - 30.0 FT. AY (SC)s CRIPTION FROM 0.0 f .// TAN. SANDY.S ED MEDIUM SAND TO 77.0 FT. BASED u ./ GRAINS. ON WASH SAMPLES. 5 a! e ~ 20-f d 25- / '/ ~ //: ./ /j', -//l, f ' s 185.75 30 30.0 - 44.5 FT. SAND (SM): ',.J. [s. TAN. SILTY. SUSROUNDED. FINE TO MEDIUM GRAINE0. ~ Y -p*

• APPeAENT CORE REC 0VERv. CORE SLIPPED THRmo SITE MOLE NO.

CW TOEgREM*DONO IN HOLE PKXED UP m NW OF POWER BLOCK 905

GE0 LOGIC DRILL LOG v00TtE aECTRIC cc-mo eL-T , 520 2 OF 4 s.5 S wnTER I! E g g s russuu st1TEs Omi g5 TESTS WATER tzvELs. g g g ig ELEvat]DN DESCRPT]QN MC CLAS$!F] CATION WATER RETURN, 0 g h b CHARACTER OF h h g ja{ f} lEg E x w mEm

m

-1D ".l.' i - i. 4e' M:F ~ t 171.25 44.5 - 61.0 FT. 45- ~ 44.5 - 77.3 FT. LIMESTONES FLUID LOSS APPROX-TAN TO CREAM.FOSSILIFEROUS (C00UINA). IMATELY 5 GAL./FT. HARD TO VERY HARD.SOME StaBROUNDEO. OF DRILL ADVANCE-l FINE TO MEDIUM GRAINED CEMENTED SAND. MENT. E x 6 s

d 55-e I

h ~ 57.0 - 58.0 FT. GRAYISH BLACK HARD - 2 SHALE. se: 62.2 - 62.8 FT. VERY HARD CEMENTED 1 HOUR ORILLING

7., 's -

SANOSTONE LENSE. TIME FOR SAND- ~Y *. STONE LENSE. ) 62.8 - 77.3 FT. INTERBEDDED LIMESTONE AND SANOSTONE: 1 - 3 IN. LAYERS OF 61.0 - 71.0 FT. VERY HARD CEMENTED SANDS INTERBEDDED FLUID LOSS APPROX- ~ WITH G IN. - I FT. LAYERS OF HARD IMATELY la GAL./FT. 65-FOSSILIFEROUS LIMESTONE (SHELLS). OF ORILL ADVANCE-l MENT. j 70-LOST ALL CIPCU-l LATION AT 72.5 FT. hlNMOL P7CKED NW GF POWER BLOCK 905 c0E TCH E FCLLO@G RUNS. I (

w PROJECT JOB N(L $HEET N(L HOLE N(L GEOLOGIC DR1LL LOG VOCTLE ELECTRIC CEPERATING PLANT 9510 3 0F 4 905 2 WATER gg l NOTES,Cm 5 PRESWE g 4 g g TESTS .TE ums. i3 O ELivATION tj DESCRIPTION dWC CLASS!FICATION WATER ETURN. g $3$lg3E3] E CHARACTER OF = = g $ l5 E USED WATER AS ORILLING FLUID FROM 77.0 - 116.0 138.45 2 FT. gg 77.3 - 116.0 FT. MABLs 6.0 SILTY CALCAREOUS CLAY.HARD.UNFRAC-5.0 4.8 9s% 4,0 TURED. TRACE OF OARK BROWN ORGANICS. 77.3 - 78.3 FT. TAN. gg - ~, 7 8.3 - 116.0 FT. CREENISH BLUISH CRAY. 82.6 - 84.s FT.10% SHELLS. 3 4,, 7# -~r. 84.6 - 88.5 FT. INTERBE00E0 SILTY ". T CALCAREOUS CLAY AND SILTY SAN 0Y CAL-5.0 4.4 88% gg CAREOUS CLAY. 85- - 10 3.0 - _= 3.0 f 1.5 1.2 80% 6 IN. STEEL CASING 1.0 88.5 - 91.15 FT.10% SHELLS. CEMENTED IN PLACE ^ 1.9 0 30 8 88.5 FT ad 1.8 0 40 8 90- ~~,;* SAMPLE 'l .a 5J 4.3

• 86%

3.7 8 50 8 1.15 - 91.5 FT. LIMESTONE LENSE. 91ES - 92.8 FT. O 91.5 - 92.4 FT. SEVERAL LIMESTONE 4.8 0 de 8 _o, { NODULES. 2J B 30 8 -."_4 92.4 - 93.9 FT.10% SHELLS. 2.7 -T 4J 4.7a 11 8 % y y 95A - 96.3 FT. LIMESTONE LENSE. 2J 68 -E SAMPLE '2 U . - ~ ' 96.7 - 97.5 FT. S 3.8 97.5 - 98.0 FT. LIMESTONE LENSE. 4.8 98.0 - 103.8 FT. SEVERAL LIMESTONE f 'o NODULES. 3.5 SAMPLE '3 5J 4.3a 86% 99.5 FT. (JAR) 3.3 100 ?- 3.7 2.5

[,$,

2.3 0 40 8 3.0 0 50 0 -[ _-^ 103.8 - 105.6 FT. CLAYEY. 4.0 4.7 118% 5 - h 195 4 - 112.0 FT. SEVERAL LIMESTONE 2.3 0 60 8 195 3.7 0 50 8 NODULES. SAMPLE *4 106.5 FT. (JAR) 3.0 0 40 8 SAMPLE '5 107.5 - 108.4 FT. 4.2 5.0. 4.s-92x 3,3 .,r - 4.0 110 - d 4.6 - _, _ ~ ~ 3.7 2.9 ~ - SAMPLE '6 4.5 4.9 = 199% ~ % 113.3 FT. (JAR) 3.3 - - E O SAMPLE '8 2.0 - -- A 114.0 - 115.0 FT.

• APPaf0e7 CORE RECOVERY. CORE SLIPPED TMOU() SITE HEE NO.

CGIE CATOH.REMADOC IN M1E. PICKED UP CN NW OF POWER BLOCK 405 FELOWDG RLMS. l u m

GEOLOGIC DRILL LOG v00TtE aEc ale OE~EnaTi~0 a= es1. 4 o, 4 ees a -1. I I 3 w s a ss a [s nota mA 5 r .5 8* g itsis waren uvtts. y 8 1 W DESCRPTION WWC Q.ASSFICATION WATER RETUR a-EMVAim {3ll lE g gagl3 gag cHanacTa or x w g 3 - cic FT.' AR) N 4.5 4.9 189% N ~ 11 g BOTTOM OF HOLE 116.8 FEET. POROUS STOPE PIEZOMETER PLACED TO A OEPTH OF 114.9 FEET. OPEN INTERVAL FROM 109.8 FEET - 116.0 FEET. W G 4 .4 6 m M W W W e G m W W e W e W M e W e l W e e 4 W M W W e M S M m W W W M i e M m 4 reww.

" 70 i c", I ~78 GEOLOGIC DRILL LUG v00TtE ELECTRIC GENERATING etANT 95 8 SITE C00m)De4TE6 ANDLE FROM HORII. BEMtDC SWITCH YARD N 9625 E 9300 gge BECLIN C0pfLETED ORILLER ORR.L MAKE AND MODEL MILE $!1E OvpBURDEN (FTJ ROCK TOTAL EPTM S/27/85 5/28/85 KEN THAMES / LAW ENGINEERING FAILING 1500 6-7/8 IN. 66.3 FT. 1.7 FT. 68.0 FT. CONE RECOVOTIFT./D CtM B0xES SApfLES EL. TOP QF CASING GROL70 EL. OEPTM/EL.OROU@ WATER DEPTH /EL. TOP OF ROCX MARL) l 216.40 FT. 207.0 FT. 57.16 FT./159.24 FT. (7/16/85) 66.3 FT./140.7 FT. SAffLE MADO(R WE10HT/ FALL CASING LEFT IN M(LEs 01A./LOGTM irrrsn gy: SEE OBSERVATION WELL REPORT L.R. WEST ( g r l

aT

N NOTES 0% k' l g TESTS WATO LEVELS. g g z I' E ELEVATION DESCRIPTION AfC CLASSIFICATION WATER RETURPL pg f CHARACTS OF W 3 e g 3 ORILLING.ETC. E d h w E mm ~ 0.0 - 5.0 FT SfLTY CLAY: LOG FROM OITCH BROWN AND RED 3% SMALL GRAVEL. BLACK. SAMPLES ORILLED WITH E-Z MUO. / COMPLETED AS 08- ./ / SERVATION WELL. 200 / 5.0 - 15.0 FT. SILTY CL AYs 4-IN.PVC CASING ./ RED. TRACE BRQwN L% SAND. FINE GRAINE0. AND SCREEN. IN '/ ~ 15.0 - 20.0 FT. E!LTY SANDS TAN. FINE GRAINEO.10% LIMESTONE. WHITE. WEATHERED. 20.0 - 28.0 FT. CIR: TAN. PLASTIC.10% OYSTER SHELLS. 2 25.0 FT. INCREASE IN OYSTER SHELLS. E 180 d 28.0 - 35.0 FT. SatiQ: FINE GRAINED 40 - 50% OYSTER SHELLS. E 30-.,. w b g h .W /// 35.0 - 36.0 FT. CLAY: d/- N PLAST 10. TAN. SANDY 30% OYSTER SHELLS. e _;,S 36.0 - 45.0 FT. OYMTFR eft t % R .?"/ TRACE CLAY TAN. SHELLS CAVING FROM 40- .:1.s 40.0 - 42.0 FT. .^r .Q*i N 45.0 - 46.0 FT. SILTV SANO:. .3-TAN TO BROWN. 0YSTER SHELLS (FROM ITI I ABovrt ISO 46.0 - 50.0 FT.SeMb 50' SILTY - DECREASE IN OYSTER SHELLS. 50.0 - 60.0 FT. SAND: SILTY. FINE GRAINED 1% OYSTER SHELLS. _.i.. 58.5 FT. SILT. T AN Gc l'#*' 60.0 - 66.3 FT. SILTY SANC: BROWN WITH BLACK SPECKS.10% OYSTER SHELLS. C95ERVATION WELL .; ' /. INSTALLE0 IN HOLE. l 140.7 ,g--66.3 F T.- 68.0 FT. Mf4RL: GPEN INTERVAL 45.5 l 139.0 1 --: CREEN, CALCAREOUS CLAY. FIRM-TO GB.O FT. BOTTOM OF HOLE 68.0 FEET.

• AerenrNT cone nrcovEnv. cunE SLIPPED Tun 0uce SITE HOLE pa REMAINING LN HOLE. PICKED UP DN SWITCH YARD 808 g ge

7 %(' % $(g' l ? PR0xCT Jos a SHEET 4 HOLE E GEOLOGIC DRILL LOG V0GTLE ELECTRIC GENERATING PLANT 951s 1 0F 2 889 stTE C00 Wee 4TES ANDLE FO4 HOR 12. BOWIING NW OF POWER BLOCK N 8328 E7868 9e* ~ NOLat CGrLETED ORELDI WtR.L MANE NC M L M1E SIZE OVEReum00s FTJ Rock FTJ TOTAL DEPTH 5/24/85 5/26/85 KEN THOMAS /JW ENGINEERING FAILING 1598 7-7/8 IN. 89.9 FT. IJ FT. 98.8 FT. CORE REC 0ggnygri./1D CORE SOMES SerLES R. TOP GF CASING GROUW EL. OEPTH/n.0Rous WATER DEPTWEL. TOP OF ROCK MARU 225.25 FT. 222.8 FT. 72.51 FT./152.74 FT.(7/16/851 89.8 FT./133.8 FT. SasrLE Woest WENDeTMALL Cassel LEFT Be MOLEsDIULENG7H LOOGED SY SEE 00SERVATION WELL EPORT L.R. WEST gg' l l wm N 8 NOTES 014 W 3 TESTS pTER LEVELS. z i ELEVATION DESCRFTION 40 CLAS$1r! CATION WATER RETURN. lg j l S I cHanacTER OF r w f l 2,i,e '. *. 0.9 - 19.8 FT. i DR!LLING WITH SILTY, vERY GRAINED. RED REVERT / WATER DRILLING FLUID. .'Je. *. 5.8 - 7.9 FT. CHANGE TO TAN. INCREASE IN SILT. =',. : 10 "5J - 20.8 FT SILTY SAND: FINE GRAINED. RED. 20-238

N*

28.8 - 37.8 FT. SILTY. MEDIUM NED.0UARTZ. TAN. h .[ 25J FT. MEDIUM TO COARSE GRAINED. g

/,[. "

HARD ZONE AT 26.5 FT. a:

r, ~.,

so-:<*. g '.:li.;. y I 'le 35.9 FT. TRACE LIMESTONE. WHITE APO as ./, *. BLACK. s 7 37.8 - 40.9 FT. GRAVELS WATER LEVEL ON r h SMALL. SUBROU6TZ. LIMESTONE. 5/25 - 38.8 FT. W41TE AM) HL ACK. 48% CLAY. T AN. g 49.0 - 55.9 FT. CL&Is 188 PLASTIC. TAN 5% GRAVEL.SMALL. SUB-ROUNDED.0UARTZ AND LIMESTONE. 50-

2 55.0 - 60.0 FT. RANDY d AY:

...'g'/ BROWN. SAND IS FINE GRAINED.0UARTZ VITH 3 - 5X LIMESTONE. WHITE. i HARD DRILLING. l 68 I 60.0 - 77.0 FT. SN_TY EAND: l 160 i QUARTZ. FINE GRAINED. SUBROUNDED. TRACE l LIMESTONE. WHITE.

• ArseRENT crue ircovEnv. c0RE SUPPED THROLO SITE HOLE Mk c0RE cret. rem 4peNG IN ICLE. P]CRED W QN NW OF POWER BLOCK 889

m, t 1 m_y//! ( enamCT - Jos E 9EET E HOLE E GE0 LOGIC DRILL LOG voorte EtEcmc oENEaaTiNo eLaNT r31. 2 o, 2 y I g g NOTES ON: PIE 88WE gg g TESTS a mTER LEvtLS. z ELEVATION DESQUPTION AM) CLASSIFICATION {Q hEj l IE4 I g DRILLING. ETC. D s lii 145.8 100% WATER LOSS W "'T 77.3 - 89J FT. LIMESTONG AT 77.8 FT. l 8 i WEATHERED. ORANGE AND BROWN. W 88 "y 48% WATER ftETURN g AT 88.8 FT. d t ? ^ . i, I 7 8.5 -. FT. MARI e I 8 90 ~ SERVATION WELL. 00TTOM OF HOLE 98.9 FEET. WATER TABLE AQUIFER. OPEN INTERVAL 69.35 TO 90.0 FT. ~ l ' cone Toe 4.E IN PICKE0 NW 0F POWER BLOCK 809 rou.ouse nue.

PROK CT JOB NO, SHEET NO, HOLE NO. GE0 LOGIC DRILL LOG V00TLE ELECTRIC GENERATING PLANT 9510 1 0F 1 LT-1B stTE C00RODeATES ANGLE FROM HORIZ. DEARING NORTHWEST OF LNIT 2 TURBIPE N 8388 E 9304 9e* 372 30 CDP 9tETED WULLER ORILL MNE APO KXEL HDLE SIZE DVER8tJOEN FTJ pKEx FTJ TOTAL DEPTH 7/5/85 7/5/85 H. COLLINS / LAW ENGINEERING MOBILE 53 5-7/8 IN. 83.3 FT. 1.35 FT. 84.65 FT. CORE RECOVERTFT./D CORE SOMES SmeLES EL. TOP OF CASINO GROUDO EL. OEPTWEL.OR0tJC WATER DEPTWELTOP OF ROCK (MARL) 215.47 FT. 213.18 FT. 60.3 FT./155JG FT.(7/16/85) 83.3 FT./129.88 FT. smeLE MooER WlGHT/ FALL CASDG LEFT IN HOLEa CIA.ADCTH LOGGED SYs SEE OBSERVATION WELL RECORD L.R. WEST g l WATER N I' h 5,5 l y 8 NOTES 06 i {g Tests WArER LEVELS.

• [@5 hg

] f O b W ELEVATION CESCRIPTION ADO CLASSIFICATION WATER RETUM l E5 CMaRACTER OF g g Ps g2 91 [g -= r l 0.0 - 84A5 FT. BACKFYt_f r ORILLEO TO REPLACE SAND. RED BROWN. SILGHTLY SILTY TO HOLE LT-1A. SILTY FINE TO MEDIUM GRAINE0. DRILLE0 WITH '3

le f REVERT / WATER ORILLING FLUIO.

200 5 '* * ' i 23 .s. .

• i.

38 -. :,, - ; e,.

1. !/

4a - :j ~ 2'i sa - *. : 'l ng 60 - U f 150 <f ~ g . *:r. 73 -. :,. k b

• .*?.-

Se -. :, :. BOTTOM OF HOLE 84.65 FEET. INSTALLED OBSERVATION WELL OPEN INTERVAL 65.17 TO 8445 FEET. e

• APP 4RfWT CDFE RECOVERY. CORE SUPPED THROLO SITE MOLE NO.

CDRE QhNmG W MX.E. FICKED UP DN NORTHVEST OF UNIT 2 TUR8INE BUILOING LT-l8

GEOLOGIC DRILL LOG V0GTLE ELECTRIC GENERATING PLANT 9510 1 0F 1 LT-7A UTE C00RumTES ANGLE FROM HRIZ. BENUNG N 8151.3 E 9317.5 90* SOUTHWEST OF UNIT 2 TURBINE BLOO. BECLM CD FLETED OR1LLIR (RILL MKE ADO HXEL HLE SIZE OVER8p M N FTJ n0CK FTJ TOTAL DEPTH 7/7/85 7/7/85 H. COLLINS / LAW ENGINEERING MOBILE 53 5-1/8 IN. 87.0 FT. 0 87.0 FT. c0= RECOVERTFT.40 CM 80xts EAsFLES EL. TOP W CASING GR000 EL. OEPTWEL.GR0uc WATER DEPTH /EL. TOP OF ROCK 09ARL) 221.17 FT. 215.92 FT. 63.19 FT./157.98 FT. (7/16/85' 87.0 FT./128.92 FT. SMFLE Hase4CR WE]GHT/ FALL CASDG LEFT IN MOLEaDIA/LDGTH LOGCED SYs SEE OBSERVATION WELL REPORT L.R. WEST l WATER i.g { g g P=ssu= .Tts 0,A e g g f TESTS WATER LEVELS. z E "g ELEVATION W DESCRIPTION 40 CLASSIFICATION WATER RETUtN. l1 [] [I we 2 I

g. %x g3 g ^ =g l

=rta - - = N E.ETL g e l

s.;

0.0 - 87.0 FT. BACKFILL: ORILLEO TO REPLACE SAND. RED BROWN.SLIGHTLY SILTY TO WELL LT-7. SILTY, FINE TO ME010M GRAINE0. e. gg...; ORILLED WITH .~.*'( REVERT / WATER

• e..

ORILLING FLUIO. 20- ~ '. - g = .. :, ~. W ~ .~ '['.. l 30-g -- );- e ~ " :, '.

• • ~

1 -. o :. 3

r..

x C 50~. :, *.

p a

2 f 60- I'; ~ 150

. ;, 2, 70-'.' i l:

80-.,:, '_ ~ ~ BOTTOM OF HCLE 87.0 FEET. ~ INSTALLEO CBSERVATION WELL OPEN INTERVAL 65.0 TO 87.0 FEET. i l

• arranori cM nEcovEn. c0nr surrED TNnaua stTE

.<tE NO. CMgQREMNDO IN HDLE. PICKED W" ON SOUTHWEST OF UNIT 2 TURBINE BUILDINO LT-7A

PROJECT JCB le(L SHEET NOL HCLE NO. GEOLOGIC DR1LL LOG V0GTLE ELECTRIC GENERATING PLANT 9510 1 or 1 LT-12 stTE CD0RopeATEt mecLE rROM HOR 12. DEARING SOUTH OF AUXILIARY BLDG. N 7775 E 9600 90* IEGLN CD fLETED ORR.LER CRILL MAKE NO MCK)EL HOLE SIZE OVER8uRDEN WTJ ROCK IFTJ TOTAL OEPTH 6/3/85 6/3/85 KEN THOMAS / LAW ENGINEERING FAILING 1500 6-7/8 IN. 79.0 FT. 0 79.0 FT. Cop 4; REcovEREFT./I) CCRE boxes SAffLE S EL.TCP OF CASING GROUPO EL. OEPTwEL.GROLN) wTER EPTWEL. TOP 0F ROCK IMARU 219.27 FT. 209.9 FT. 59.10 FT./163.17 FT.(7/1G/85) 79.0 FT./130 FT. sApeut naseO WIGHT / FALL CAEDG LFIT De HOLZsDIA./ LENGTH LOGGED BYs SEE OBSERVATION WELL REPORT L.R. WEST WATUI k' h f,. PRESSURE Q NOTES CNr ,6,5 g TEsis 3 witn m 3 $ f W DESCRIPTION 40 CLASSFICAT]ON WATEP RETURN. g Q ELEVATION e O d t [3gD l Ps g9 91 = CNaAACTEA 0F W .g - oc- .-"fi 0.0 - 79.0 FT. BACKFILL: DRILLED WITh ..r.. SAND. RED BROWN. VERY OENSE. SLIGHTLY REVERT / WATER SILTY TO SILTY. FINE TO MEDIUM GRAINED. DRILLING FLUID. 200 10 -'.,.

• l l 1, '.

t-20- i,,. m Y. 8 E 30-, :r.. se x y 40- *!i R,, S " [, # ~ z h 50_ ;. ei e:: y a 8 15 0 60- :, *, ~

f).

70- *,.

f.-;

BOTTOM OF HOLE 79.0 FEET. INSTALLE0 OBSERVATION WELL OPEN INTERVAL 58.15 - 79.0 FEET. W f

• APPantwf cont Recovenv. come SUPPED THRap SITE

'O E PC. CIRE CATOtR.RDWICNG IN KILE. PICKED UP DN SOUTH OF AUXILIARY BUILDING LT-12 FCLLCWIMO RLNS.

OCMI AFTF nDTI I I AP PROJECT JOB NO. SHEET NO. HOLE 80. UL.ULUUlb Un1LL LUU V0GTLE ELECTRIC GENERATING PLANT 9510 1 0F 1 LT-13 s!TE CotyCDeATES ANGLE FROM KRI2. BENuNG EAST OF UNIT 1 N 8135 E telle 9e* EEGLse CO*LETED ORILLIR ORA.L MAKE NO MCIIL MLE SIZE OVER8L70EN FTJ ROCK f TJ TOTAL DEPTM 5/28,35 5/28/85 KEN THOMAS / LAW ENGINEERING FAILING 1500 7-7/8 IN. 89.0 FT. 1.0 FT. 90.0 FT. CORE F.ECOVERYFT./D Cone SQXE3 SmeLES EL. TOP OF CASING GROL70 EL. KPTH/EL.OROL70 WATER DEPTH /EL. TOP OF AOCX (MARO 229.61 FT. 219.0 FT. 63.08 FT./157.53 FT.t7/16/85) 89.0 FT./130.0 FT. SAprLE HaseER WEWTMALL CASDC LEFT De HOLis01AADGTH LOGGED OYs SEE OBSERVATION WELL REPORT L.R. WEST k "M g) N PCTES ON: yl g y 6 g TESTS WATER LEVELS. g CESC87T10N WO CLASSTICATION WATER RETW N. ELEVATIOP. a. a w d CHARACTER OF yg g MM ETC. j g 3 { 0.0 - 90.0 FT. BACKFILL: ORILLED WITH SAND. REO BROWN. 0ENSE TO VERY DENSE, REVERT / WATER 1, !'. SLIGHTLY SILTY TO SILTY. FINE TO PEDIUM DRILLING FLUID. GRAINED. 10 - .i,. ~ 2gg gg -' ::,.

:o.

. :r '. 30 -.*#.' E M =#, y - :s. y 40 - . r.. 8 2 ] 50 - :r *. ~' R y S 60 -' fe.. 15 0 70 - ",' :' '/ :' eg2- (# ' ' - :r '. .i. oct - l BOTTOM OF HOLE 90.8 FEET. [ INSTALLED OBSERVATION WELL CPEN INTERVAL 68.1 TO 90.0 FEET. 1 f ( 2

• arrenrNT comt evEnv. cone SLIPPED THnauct SITE HOLE Pc.

curqE cATcwA RouuPENG IN HOLE. PlcNID UP QN EAST OF UNIT 1 LT-13 FaLLOWDs ases.

c APPENDIX C LABORATORY TESTS Permeability Tests Harding-Lawson Assoc. l Cation Exchange capacity Soils and Plant Laboratory Inc. Distribution Coefficient Battelle Pacific Northwest Laboratories 1 f

~ Harding Loween Assootstes l l l l August 12, 1985 l l 3854,085.01 Bechtel Civil & Minerals, Inc. P.O. Box 3965 San Francisco, California 94119 Attention: Mr. Thomas Crosby Gentlemen: Laboratory Testing Results Vogtle F.lectric Generating Project Contract No. 9510-091-SF-06 This letter presents the results of laboratory testing performed on samples of rock and soil received from Bechtel Civil & Minerals (BCM) from the Vogtle Electric Generating Plant. Harding Lawson Associates (HLA) work on this project was performed under Contract No. 9510-SF-06 dated May 9, 1985. The samples were delivered to our Novato, California laboratory by a Bechtel carrier on July 3, 8, 15, and August 15, 1985. Selection of the tests was performed by BCM personnel and transmitted to HLA with the samples. During the course of the laboratory work, we communicated with Mr. Thomas Crosby regarding the testing and progress of the work. The testing was done in accordance with the Specifications for Laboratory Testing end in accordance with the data transmitted in the above-mentioned letter. All of the work was performed using properly cali-brated equipment under the supervision of the HLA laboratory manager or the laboratory director. The original data sheets and computations are available in HLA's files for review. These records will be retained for at least one year from the date of this report. Permeability Tests Ten falling head permeability tests were run in accordance with the procedure presented in the Department of Army Manual EM 1110-2-1906. The l Eng:neers 7655 Pedwood 8Nd Teteorore Alaska Hawan Teuas Geolog:sts & PO.Bcx578 415/992-0821 Cadornia Newaca Washington Geophysosts Novato CA 94948 Te'ex 340523

August 12, 1985 Harding Lawson Associates 3854,085.01 Bechtel. Civil & Minerals, Inc. Mr. Thomas Crosby Page 2 test equipment consists of permeameter chambers manufactured by Karol Warner, Incorporated and modified by HLA Each 4-inch-diameter soil / rock core was trimmed, placed in a chamber, confining fluid was placed in the chamber surrounding the rubber membrane covered sample, and a seating pressure of 2 psi applied to the chamber fluid. The sample was then seepage-saturated and followed by back-pressure saturation until a "B" value of.95 or greater was obtained. (All saturation water is distilled and was de-aired before testing.) The test specimen was then consolidated to the required pressure. After consolidation was completed, the permeability test was run. The permeability test results for the 10 samples area as follows: Sample Depth Permeability Initial Conditions No. (ft) (cm/sec) Water Content % Dry Density (pcf) 901 119.0 5.01 x 10-9 2.9 160.9 902 104.2 1.95 x 10-6 38.6 78.1 l 903 108.2 1.94 x 10-7 21.3 103.6 903 112.7 4.99 x 10-7 26.0 97.5 903 128.4 2.06 x 10-6 23.0 99.7 904 92.3 2.42 x 10-6 65.1 66.4 905 91.6 1.41 x 10-6 24.1 102.0 905 96.7 8.49 x 10-6 25.7 99.9 905 107.5 1.39 x 10-7 38.9 81.2 905 114.0 '.81 x 10-8 24.8 98.3 Cation exchange capacity tests were performed by Soil and Plant Laboratory, Inc., of Santa Clara, California. The results are attached to this letter. l Yours very truly, HARDING LAWSON ASSOCIATES d$ AP'd4j Lyle E. Lewis, Civil Engineer - 16360 DMS/LEL/dm

Attachment:

Cation Exchange Test Results 4 copies submitted l

p3gge, ty!JW4 " I i j u t i 2. # L . SOIL AND P(ANT LIBORATORY,INC. SANTA CLARA 0FFICE July 11, 1985 Lab No. 78035 HARDING LAWSON ASSOCIATES P O Box 578 Novato, CA 94948 RE: SAMPLES REC'O : 6-27-85 Sample Cation exchange Description No. capacity meq/100 1 0.9 SS#1 2 1.3 SS#2 3 1.1 SS#3 4 1.1 SS#4 5 1.5 SS#5 6 1.3 SS#6 l 7 0.7 SS#7 8 0.9 13293 9 1.3 13298 10 1.3 13308 l Data e su ed without recommendation or coment. 7 p'v / 4 L / 'l RI L TLEFORD Analytical Laboratory Director Y '"-"~4"attra.T' l.!!!;..=0,;"ar 'a'"'* ' 4 P.O. So.1644. Bellevue, washington 96000 (206) 746-6665

s f OBaHelle = Pacific Northwest Laboratories y July 16, 1985 Qao; ashington U.S.A. 99352 n Telephone (509) Telex 15-2874 5 Mr. Cliff R. Farrell h Bechtel Civil and Minerals, Inc. m P.O. Box 3965 San Francisco, CA 94119

Dear Mr. Farrell:

[

Subject:

Final Letter Report for Vogtle Nuclear Power Plant Sediment Sorption Q Tests - Contract No. 23112/07049 In mid-June 1985, four sediment samples (designated 13293, 13298, 13308 and 5' 11755) and one well water sample from the Vogtle Nuclear Power Plant (Georgia) M were received. The four sediment samples were air dried in our laboratory, the'n gently disaggregated and each sample was well mixed. The well water was filter.ed through 0.45 um membrane filters to remove suspended material. The a pH and Eh of the filtered water were pH = 7.42 and Eh = 373 my vs SHE. q Triplicate one-gram samples of each of the four air dried sediments were T_ placed in individual 50 ml polycarbonate centrifuge tubes. Nexb5 30.0 mis of T pCi/t{gredgroundwaterthathadbeenspikedwith15.6pCi/t the fi Sr and 242 5 Cs were contacted with the sediments for 7 days. The slurries were ? continually gently agitated on.a linear shaker. In addition, three blank centrifuge tubes were treated in a similar fashion excepting that they +- contained only the radionuclide traced well water. These samples were used to correct for any container adsorption. After the 7-day contact period, the samples were centrifuged and the supernatant solution was filtered through 0.45 m membranes. Exactly 15.0 mis of the filtered samples were radiocggnted on a Ge(L1) g ector for the characteristic gamma-rays 514 key ( Sr) and 662 key ( Cs). The distribution coefficient, Kd, for Sr and Cs was then calculated from the observed counts for the blank solutions and the supernatant solutions from the sediment samples using equation 1. b Kd = bO' *) \\ Ce /W Eq. I -w ~ where L Co = counts / min in blank sample (average of three blanks) Ce = counts / min in each supernatant solution V = volume of solution (30.0 mis) 2 W = weight of sediment (1.0g) s 1

Mr. Cliff R. Farrell 4 July 16,1985 page 2 - Table 1 is a summary of the radiocounting data and Table 2 is a summary of the individual Kd values. The variability in the observed replicates is similar to past experience for Sr and perhaps a little higher for the Cs values on sediments 13293 and 11755. Perhaps the Georgia sediments contain a mineral very specific to cesium adsorption that is present in small amounts such that one gram samples are not truly homogeneous. That is, one sample such as Sample B for sediment 11755 might contain more of this selective mineral than the other two replicates. In general, the trend for greater Cs adsorption than Sr adsorption is typical of sediments I've worked with and the absolute range Cs ( 400 to 2100 mis /g) and Sr (40-95 mis /g) are typical of predominantly sand-sized sediments as the Georgia samples appear to be. Sincerely yours, R. Jeff Serne Staff Scientist Geochemistry Section Earth Sciences Department RJS:dw Attach. cc: Mr. Ken Abbot (Bechtel)

Table 2 Kd Data (units mis /g) 137 60 Cs Sr Sediment 13293 A 409 36.5 B 509 47.3 C 237 38.6 Ave. TG 138 Ave. T63 6 Sediment 13298 A 91 5 99.6 B 1233 97.5 l C 1046 86.9 Ave. T6E 160 Ave. 9 C7 6.8 Sediment 13308 l A 512 80.0 B 554 67.9 C 493 80.1 Ave. 376 31 Ave. 75!6 7.0 Sediment 11755 A 1843 34.0 3 2812 73.8 C 1748 60.7 Ave. YTIT 589 Ave. 3377 20.3 l l i}}