ML20052H919

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Forwards Addl Info on SEP Topic II-4.D, Stability of Slopes, in Response to NRC 820331 Request.One Oversize Drawing Encl.Aperture Card Is Available in PDR
ML20052H919
Person / Time
Site: Yankee Rowe
Issue date: 05/17/1982
From: Kay J
YANKEE ATOMIC ELECTRIC CO.
To: Crutchfield D
Office of Nuclear Reactor Regulation
Shared Package
ML20052H920 List:
References
TASK-02-04.D, TASK-2-4.D, TASK-RR FYR-82-47, NUDOCS 8205240190
Download: ML20052H919 (22)
v • d • e


Text

F

' YARKEE ATOMIC ELECTRIC COMPANY

' " * ^ " * " " ' ' - * ' *

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2.C.2.1 f,

1671 Worcester Road, Framingham, Massachusetts 01701 FYR 82-47

.Ya.uxes May 17, 1982 United States Nuclear Regulatory Commission Washington, D. C.

20555 Attention:

Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing

References:

(a) License Nc. DPR-3 (Docket No. 50-29)

(b) YAEC Letter to USNRC, dated February 26, 1982 i

(c) USNRC Letter to YAEC, dated March 31, 1982

Subject:

Additional Information on SEP Topic II-4.D, Stability of Slopes

Dear Sir:

Reference (b) submitted our assessment of SEP Topic II-4.D, Stability of Slopes. Reference (c) requested additional information to further support our conclusion that stability of natural slopes is not a safety concern at the Yankee Plant. Although some of the requested information is not available, we have prepared the following attachment to provide additional information on slope characteristics, slope stability, strength tests, ground water, and buried equipment.

This information, as well as that provided in Reference (b), support the conclusion that natural slope stability is not a safety concern at the Yankee Plant.

Very truly yours, Y NKEE ATOMIC ELECTRIC COMPANY

. A. Kay 4

Senior Engineer - Licensing JAK: dad kd.+

W

,sy i$

l 820S240190 820517 PDR ADOCK 05000029 P

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1.

Slope Characteristics Figure 1 shows the locations of the two slopes that were analyzed, superimposed on an enlarged USGS 7.5 minute quadrangle sheet for Rowe, Mass. - VT.

The slope topography was surveyed in 1981 by New England Power Company (NEP).

For this analysis all of the soil materials are assumed to be glacial till.

Evidence that the slopes along Sections A and B consist primarily of glacial till derives from interpretation of the seismic velocities of the seismic profile lines (copies attached) in Weston Geophysical (1979) and from obser-vations in five test pits on the slopes southeast of the Rowe plant (see Figure 1 for test pit locations; test pit logs are also included in this package). Bedrock topography along the slopes also derives from interpretation of the seismic velocities of the seismic profile lines in Weston Geophysical (1979) which were also surveyed by NEP.

The lodgment till was assigned the following strength and weight characteris-tics (see Section 2 for details):

Y (1b/ft3) 0 to 30 feet deep 46 135 30 to 90 feet deep 40 140 Greater than 90 feet 35 145 The bedrock was assigned values cf 70 and 179 lb/ft3, respectively.

The minimum static factors of safety for deep-seated fafkee surfaces for Slopes A and B are 1.46 and 1.62, respectively. The failure areas are depicted on the attached representative slope profiles. Fore pressure distribution in the slopes were determined from flow nets for the case of

f.

ground water level at the ground surface with ground water seepage generally following the contours.

Pseudo-static seismic coefficients for slopes A and B, which reduce the factors of safety to 1.0, were calculated as 0.15 and 0.19, respectively.

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3 SLOPE STABILITY ANALYSIS A-N B-B' stoPE Pnorus a

ROWE NUCLEAR POWER PLANT line 1 SEtsuiC REFRACTION.1978 ROWE. WASSACHUSETTS A1 SACKHOE TEST PITS.1978 O-500-1000-Li n e i f FIGURE 1--LOCATION OF SLOPE PROFILES FOR WHICH STABILITY ANALYSES HAVE BEEN PERFORMED

T-TP 1 FIELD EXPLORATORY TEST PIT LOG SH J OF_2_

R0WE 10/19/78

! /

YAEC R0WE SEP slTE D ATE : sTAnT FINISH pro. LECT 10' Seismic line 2, Sta. 3+80 ggouND ELEV.

1515' TOTAL DEPTH (FT.)

LocATeoN JD 350 MACKIN EQulPMENT USED CONTRACTOR LOGGED sY R. Gerber cHK'o sY M S AMPLE SCALE COMMENTS STRATA TYPE DEPTH soll AND ROCK DESCRIPTION (include encovation of f ort )

CHANGE AND RA GE F ET g

brown; similar gradation es 2'-6';

A-and B-horizons top 6" dark brown; bottom 18" olivt

=

D friable structure; most tHe roots o

in this stratum s

l 2

glacial lodgment till: dark yellowish g

brown and mottled; sand-silt matrix a

u.s > V w/ lenses of silty sand; 10% grave' moderately easy E

S and cobbles up to 12"; very faint digging; most cob-.

)

occasional fissile structure that bles are schist or-d of.

m gneiss; some wx crumbles to granular structure; fir b

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in-pla:e; 20 to 40% fines; cobbles schist cobbles t

E 4 -

Bulk and gravel subangular to subroundecl;

  1. 1

/ fines slightly plastic l

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similar to 2'-6' except: color is atow e.,/

olive and mottling fades with depth; slightly softer with perhaps sligh~.ly ma - in.s >

7' ' ' * " * "higher water content or more fines o 4.5 pocketgenetrometermeasured3.5t i

rf tons /ft Cu; soil structure is

/

somewhat massive but breaks into 8-Bulk small angular fragments Y

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10 ' -m GRo uND WAT E R suyuaqy BouloERs 8"tol8"oicm: No

  • Vol C,a Ft DATE _

TIME' DEPTH FT.

10' o er is*o,om:No.

s vol.

cu Ft.

10/20/78 26

>10' g

TEST PIT PL AN B AG SAMPLES moat" GROUNDWATER Nnna

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h Vola 5

c.Y Not ENCouNTEREo l X C A'

T EsT PIT No. }

4e T

f.

TP 2 FIELD EXPLORATORY TEST PIT LOG SH d OF L M/W8 10/19/78 riNiss R0WE D ATE : START YAEC R0WE SEP slTE PROJECT 10' 1425' TOTAL DEPTH (FT. )

Seismic line 3, Sta. 7+00 GROUND ELEV.

LOCATION CONTRACTOR MACKIN EQUIPMENT IJSED JD 350 R. Gerber cug o gy A LOGGED sY SCALE' COMMENTS soll AND ROCK DESCRIPTION (include encovation of fort )

IN AND g4 gg FEET N4 (FT) top 4" dark grayish brown; bottom 26" strong brown over yellowish A-and B-horizons R

brown; silty sand (SM); 30% gravel and cobbles; relatively loose

[

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(friable); most of roots in this stratum 2-U glacial lodgment till; clive and

[

mottled; silty fine sand matrix moderate difficulty -

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(GM); less fines content than TP 1; in digging; some wx.

8

,,q x 20%-30% gravel and cobbles up to 3C ";

schist cobbles z

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very little plasticity in fines; Bulk fissile fabric looking like:

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l na m; >g o p M'l f M h S' m W i W W w., z i-y

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similar to 24'-7h' except:

Bulk

  1. 4 slightly less dense and appears to 8-

/ have slightly more fines content; (GM) l

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F 10'l wee.-

l GROUNDWAT E R

SUMMARY

BOULDERS 8"to l8"Diom. : No s Vol.

Cu. Ft DATE TIME '

DEPTH FT.

10' lD720//d U

>lU' DE PTH ove r 18"Diom : No.

s vol Cu Ft.

2 TEST PIT PLAN BAG SAMPLES GRoVNOWATER d000 1

0 " "

CY NoT EN00VNTERED l )(

$(

T EsT PIT No. 2 4'

/////)

h vots T

TP 3 FIEL D EXPLORATORY TEST PIT LOG SH I OF 2 YAEC R0WE SEP R0WE 10/19/78 WU/M SITE o,7g. sT ART FiNiss PROJECT 8.5' 1355' TOTAL DEPTH (ri.)

Seismic line 4, Sta. 9+00 GRoVND ELEV.

LoCATON CONTRACTOR MACKIN EQUIPMENT USED JD 350 R. Gerber LossEo sY

,g.o,y g s AMPLE SCALE COMMENTS STRATA TYPE D E PTH soll AND ROCK DEsCRIPTsoN gg,

)

CHANGE AND RA GE F T N

dark brown over yellowish brown; sand-silt (SM); relatively free of A-and B-Horizor.s -

so ig, gravel and cobbles; moderately fir n R

s w,, 4.,

  • . u.s E

j Bulk //

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2 mottled silty fine sand with small g

gravel near bottom; dense; massive rn[

(no fabric) o n.*4>W heavily mottled, poorly graded 8

(r#%.T*,7stiff sandy silt (ML) glacial lodgment till similar to h

u Bulk

/

TP 2 from 2h'-7h' except fabric is 4-

  1. 5

//

not so well developed (GM)

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6 similar to TP 2 from 7h'-10' bottom 4' caving '

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GRoVNoWAT E R sguuAgy BOULDERS 8"to IS" Diam : No Vol.

Co.Ft DATE TIME' DEPTH FT.

Sh' seeps DEPTH om i8"Dion:Na s vol.

Cu Ft.

10/19/78 0.25

~83' seeps JAR SAMPLES 10/19]iB__ 0 25 TEST PIT PL AN 20'

~10l20/78 11.5 5.5 BAG SAMPLES -

GRovNowATER OE-b 10/23/78 96 5.0 18 c.Y Not ENCousTERED l

M*i 5I,f/////)

V0

T EsT PIT No.

3

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TP 4 FIELD EXPLORATORY TEST PIT LOG SH __}_ 0FL YAEC R0WE SEP R0WE 10/20/78 slTE D ATE : START FINISH PROJECT 10' Seismic line 4 Sta.15+50 1205' yo7,t ogp7g g,7,3 GROUND ELEV.

LOCATION CONTRACTOR MACKIN EQulPMENT UsED JD 350

. eh LOGGED BY CHK'D BY h S AMPLE SCALE COMMENTS STRATA TYPE DEPTH CHANGE AND RA GE soll AND ROCK DESCRIPTION (include encovation ef f ort )

F ET dark brown over stong brown color; sand-silt (SM/ML) with very few A-and B-Horizons gravel; most tree roots are in thi s R

[#d*5dAa, stratum a

m

% % rub o

W w.s,x heavily mottled; possible lacustrine wm sediments incorporated in till;

j 2-v.ac Bulk /!/ alt. %" thick strata of sandy clay

/

M 8A&8B waxed and micaceous silty fine sand y

(ML over SM) g 8

glacial lodgment till; olive; sanc z

8 silt matrix (SM/ML); 30%-40% grave l difficult digging -

0 4_

and cobbles; dense n.1%>5

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(=w. i. s

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till; olive; widely-graded gravelly Byik [

sand (GW); few cobbles 6

on>s-till; olive; sandy silt matrix -

69f%Iua (ML/CL); more fines than 3' to 5';

  • * 's.15 some faint fissile fabric nearly bottom 5 caving f

parallel to slope of ground; d *4 some boulders up to 24"; not quito 1

so dense as 3'-5' h

undisN 8-

  1. 2

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10'~ rr^

BOULDERS GRo uND WAT E R

SUMMARY

8"tol8"Diont: No s vol.

Cu. Ft DATE TIME '

DEPTH FT.

10' 0.25 1.5 seeps 1bhEs over ia*Dion: No.

s vol.

Cu Ft.

10/20/78~

0.25 5.0 seeps s

1 10120/78

16. TEST PIT PL AN 10/23/78 72 4.5 BAG swetts 7

7 woata GRovNOWATER T8 I

j~V/////)

@ voL=

35 c Y Not ENCOUNTERED l EM T EsT PIT No. 4 11'T

TP 5 FlELD EXPLORATORY TEST PIT LOG SH J OF_2.

0/U/78 10/20/78 FINISH PROJECT YAEC R0WE SEP SITE R0WE DATE : START LoCATON 85' E. of Line 3, Sta.13+25reRollND ELEV.

1230' yoTAt ogpys try,3 9'

MACKIN CONTRACTOR toulPMENT USED LOGGED BY CHK'D BY_

SCALE' S AMPLE COMMENTS STRATA TYPE DEPTH Soll AND ROCK UEsCRIPTioN (include encovation ef fort )

IN CHANGE AND RANGE FEET Na (FT) brown over yellowish brown with T

mottling below 1h'; sand-silt A-and B-Horizons (SM/ML) with only a few gravel and

)

cobbles; slightly firm E

2-s..qt.>c.

g e

w e n ty, glacial lodgment till; yellowish u,

E Bulk

/

brown; silty sand (GW-GM); 20%-30%

moderately difficult-8

  1. 11 8

//

gravel and cobbles; some w schisi digging below 2';

x cobbles; mottled large boulders (up to z

b j.i'df.h, 4') throughout lodgment till; olive; mottling (Sti) 0 4-g...g fading with depth; silty sand not quite so fine grained as bottc m same comments as

[ //

of TP 1; some faint fissile fabric above Bulk running parallel to ground surface;

  1. 10 very dense 6-silty gravelly sand (GW) to 9' same comments as '

except for two strata as noted; above F

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~

Embe h 5% 4* Ga%,

av.3,3, s.* ado f

~

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//

some lim nite staining; 50% cobbles Bulk pg

/ //

and gravel; widely-graded lodgmen till 9'.

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GRO UNDWAT E R

$UMMARY BOULDERS 6

8"tol8"Diom: No e Vol.

Cu Ft.

DATE TIME DEPTH FT.

over 18*Dios: No.

a vol.

Cu. Ft.

10/20/78 __DJ5 8.0' DE PTH 10/23/78 72 7.5' JAR SAMES 3

TEST PIT PL AN BAG SAMPLES -

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Strength Tests The block of undisturbed till--carefully hand-carved from testpit 1--appears to be typical'of the majority of lodgment till on the slopes around Sherman Rese rvoir. There is no doubt that lenses of both more gravelly and more clayey till. occur within the " typical" lodgment till, but these lenses are-not extensive (generally less than 50 feet in length and rarely more than 100 feet, unless 2 distinct tills are involved).

As shown in the triaxial test results, the Mohr-Coulomb failure envelope for the lodgment till is curved. This curve has been interpreted to repre-sent an effective friction angle of 46 for soil depths (below water table) of 0 to 30 feet, 40 for soil depths from 30 to 90 feet,'and 350 for soil depths greater than 90 feet.

Based upon the bedrock field mapping results summarized in Weston Geophysical (1979), failure along bedrock foliation planes under slope sections A and B is not considered a likely event. The local. bedrock foliation dips into the hill, this is not a case.of a dip-slope. The rock has been assigned an effective friction angle of 70 after Terzaghi (1962) who stated that 70 is the critical slope angle of hard massive rock with a random joint l

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Consulting Geotechnical Engineer w

e July 18, 1979 Mr. Ed Levine Weston Geophysical P.O. Box 550 Westboro, Mass. 01581

Subject:

Laboratory Tests for Rowe Till

Dear Ed:

Figure 1 gives results for three triaxial tests on "undistrubed" till.

These data show the effective stress paths for three triaxial tests consolidated to effective confining pressures of 5, 10 and 20 t/m2 and sheared by We have undrained loading with pore pressure measurements.

added a dashed line to indicate our estimate of the strength envelop indicated by these data.

Table 1 summarizes results from classification tests on l

l all samples from the Rowe slopes.

Most of the samples had ir.suf ficient plasticity to justify tests for Atteberg limits.

~ Table 2 summarizes information relevant to quality con-trol for our tests as required by the Nuclear Regulatory Commission.

These tests complete our laboratory assignment for the Rowe samples.

Please contact me, if you have questions about the data.

Sincerely yours, N L. [$n bo, p l

W. Allen Marr WAM/vpf

'cc Bob Gerber T. William Lambe i

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Quality Control for ROWE-YAEC Testing

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SPECIFICATIONS Testing followed the following recognized specifications an1 standards:

Preparation for particle size and soil contants ASTM-D-421-1958 ASTM-D-422-1963 Particle size analysis ASTM-D-423-1966 Liquid limit ASTM-D-424-1959 Plastic limit, natural water content Tr'iaxial Tests T.W. Lambe, Soil Testing, Wiley, 1951.

CALIBRATION All instruments were calibrated with the following standards:

standard Bars, Set No. 154, manufactured Length - N.B.S.

3-20-70.

by Vankeuren Co., Watertown, Mass.

Weight - Blance manufactured, serviced and calibrated by Metler Balance.

Serviced 4-7-79.

Pressure - pressure calibration stand manufactured by Refinery Supply Co. - Cenco Co.

SENSITIVITY Load - TYCO 1000 lb load cell 1 0.01 lb Pressure - TYCO 200 psi transducer AB i 0.02 psi DISPLACEMENT - John Bull Dial Guage 1 0.0001 inch e

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Ground Water Information There are no records of piezometric levels.in the slope sections analyzed here. The assumption was made that the ground water level was at the ground surface with ground water seepage generally following the contours. This was done even though interpretation of the seismic refraction data in Weston Geophysical (1979) suggested that in many portions of the steep till slopes surveyed the ground water table was 20 to 30 feet below ground surface at the time of the survey. Ground water information is also pre-sented in the test pit logs and in Geotechnical Engineeis Inc. (1980).

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REPO RT ON FOUNDATION INVESTIGATION

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FIRE WATER TANK ROWE ATOMIC PLANT ROWE, MA

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Submitted to Yankee Atomic Electric Co.

Submitted by Geotechnical Engineers Inc.

1017 Main Street Winchester, Massachusetts 01890 February 22, 1980 l

Project 79617

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F TABLE OF CONTENTS Page No.

LIST OF FIGURES 1

1 INTRODUCTION 1

1.1 Purpose 1

1.2 Scope 2

2.

SUMMARY

3 SITE AND PROJECT DESCRIPTION 3

3 3.1 Site Description 3

3.2 Project Description 4

4.

SUBSOIL INVESTIGATIONS 4

4.1 Field Investigations 4

]

4.2 Laboratory Tests 5

S.

SUBSOIL CONDITIONS 7

6.

FOUNDATION RECOMMENDATIONS FIGURES APPENDIX A - Boring Logs

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1 1.

INTRODUCTION 1.1 Purpose Th,e purpose of this report is to present the results of

)

our subsurface investigation for the proposed fire-water tank at the Rowe Atomic Plant, Rowe, MA.

1.2 Scope The scope of work for this investigation included the

]

following:

Plan subsurface investigation with representatives a.

)

from Yankee Atomic Electric Co. (YAEC).

Provide field observations of drilling activities b.

]

performed by the drilling contractor, Guild Drilling Co.

Perform laboratory tests to determine index proper-ties of subsurface soils.

c.

Evaluate the subsurface conditions at the site for d.

J static and seismic loads and make recommendations for foundation design.

In addit' ion, GEI has the responsibility to provide drawings

~

and specifications for the foundation aspects of the project, which will be submitted separately.

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2.

SUMMARY

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A subsurf ace invertigation was made at the site of the 350,000 gallon fire-water tank at the Rowe Atomic proposedThe investigation consisted of five borings and the Plant.

installation of pne observation well.

These borings revealed that an adequate bearing stratum from the is located beneath the fill at a depth of 2.to 3 ft J

The subsoils below this depth are not present ground surface.

susceptible to liquefaction or the development of excessive strains during the design earthquake based on the criteria in the Massachusetts State Building Code.

The proposed tank and pumphouse may be founded on firm The excavation should extend

]

natural soils below the fill.

to a minimum depth of four feet below the ground surface and The deeper if any unsuitable materials are encountered.

foundations may be constructed directly on the natural soils J

or on compacted nonfrost susceptible backfill.

Dewatering may be required to maintain the excavation dry during construction.

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3.

SITE AND PROJECT DESCRIPTION i

3.1 Site Description The site of the Rowe Atomic Plant in Rowe, MA is shown The proposed tank will be located near the south in rig. 1.

as shown in Fig.

2.

corner of the fenced plant area, turbine building and The vapor containment structure, related plant facilities are located to the north and east of the proposed tank site.

The site slopes downward to the north Based on conversations as it approaches the Sherman Reservoir.the proposed location of the tank is

-1 with plant employees, likely to.be in an area which was cut to an approximately level J

A stream which plant grade during construction of the plant.had originally flowed throug the left (southwest) of the plant site.

A small flow of water still occurs in a drainage ditch which is located along the The ground surface elevation in the proposed westerly fence.

tank area is about 1033 to 1034 ft.

(Plant Datum is 105.66 f t above USGS Datum. )

3.2 Project Description it is presently planned to Based on discussions with YAEC,42 feet high by 40 ft in dia-gallon steel tank,

.]

use a 350,000tank will be founded at the ground surface and used meter.

The for the storage of water for use in fire emergencies.

A pumphouse will be located to the west of the tank with the near edge about 3 ft from the tank.

The pumphouse will be about 16 feet by 22 feet in plan dimensions and will consist of This a metal prefabricated structure founded on a concrete slab.

fuel tank, and valving for con-f structure will house the pump, trolling the flow of water from the tank.

The piping between the tank and pump will be above ground and installed in a sleeve which will be heated when necessary to pre-The temperature of the freezing of the water in the pipe.

freezing.

) ~1 vent tank also will be controlled to prevent l

J water in the t

6

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SUBSOIL INVESTIGATIONS 4.1 Field Investigatio'ns the actual tank During the first phase of the project, The purpose of the location had not,been established.

initial borings was to determine the general suitability of the subsurface conditions in the areas defined by YAEC as.

potential tank locations.

2, Borings 1 through 5, located in the site plan in Fig.

were performed by Guild Drilling Co. between October 1 and Logs of these borings prepared by GEI are I

October 11, 1979.

The borings ranged in depth from included in Appendix A.A groundwater observation well was in-29.8 ft to 61.7 ft.

3, after completion of the sampling

]

stalled in Boring No.

operations.

Additional borings which had been planned for the area

]

to the northwest of Borings 3, 4 and 5 were eliminated based on the favorable subsurface conditions found in the initial borings.

4.2 Laboratory Tests Af ter completion of the borings, the samples were brought

]

to our laboratory for verification of the visual descriptions made in the field.

Six grain-size analyses were performed on representative The samples from the borings to aid in sample descriptions.

3 to 5.

results of these tests are given in Figs.

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5.

SUBSOIL CONDITIONS The subsoil profile at the site may be generalized as follows for foundation design purposes.

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l.

Fill - In all borings, the top two to three feet of soil was classified as fill.

The soil is typi-cally a widely-graded gravelly silty sand and may consist of in-place materials which were reworked

,1 during,the construction of the plant.

The standard penetration resistance in the fill ranged from 23 to 65 blows /ft.

2.

Brown Gravelly Silty Sand - Below the fill, a layer

~

consisting predominantly of widely-graded brown gravelly sand was encountered.

The gravelly sand generally contains 5-20% silt and extends to depths of 7 to 12 f t below the ground surface except in Boring 4, where this deposit extended to about 23

~}

In Borings 2 and 3, zones of brown silty fine ft.

sand to sandy silt were interlaced with the brown widely-graded gravelly sand.

Layering was observed 1

in some samples of these finer soils.

The standard

~J penetration resistance for the gravelly sand varied from 15 to more than 100 blows /ft.

During sampling, the number of blows per inch for the entire sampic was recorded.

In a few cases a rapid increase in blows per inch occurred which is probably due to the the

~]

sampler encountering a piece of gravel; however, J

majority of blowcounts recorded did not appear to be affected by this phenomenon.

Standard penetration resistance values in the layered silty sands and silts

-1 J

ranged from 21 to 43 blows /ft.

3.

Olive Gravelly Silty Sand (Till) - Dense glacial till l -]

was encountered in all of the borings below the brown c

gravelly silty sand.

The till was typically an olive, widely-graded gravelly silty sand to sandy silt.

In l

some samples, the silt content was higher than the l ~}

content of coarse-grained soil.

Occasionally, cobbles and boulders were encountered in the borings.

The standard penetration resistance values were occasionally in the range of 38 to 50 blows /ft but were more typically greater than 50 blows /ft and frequently greater than 100 blows /ft.

A few of the higher blowcounts appeared f.]

to be the result of the sampler encountering a piece of l

However, most of the blowcounts appear not to gravel.

I have been influenced by this phenomenon.

All of the l

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borings were stopped in this layer of till.

Total penetration into the till ranged from 7 to 54 ft in the borings.

4.

Silt and C13a - In Boring 5, a layer of mottled claycy

~~~

silt and silty clay was encountered at a depth of about 4.5 ft.

This layer was about 8-ft-thick and had glacial till above and below.

Standard penetration resistances of 29 and 54 blows /ft were obtained from the two samples taken.

~

5.

Groundwater - A groundwater observation well was in-

~ stalled in Boring 3 after the sampling was completed.

The depth of the groundwater in this well varied from 3.6 ft to 4.3 ft between October 9 and October 23, 1979.

These depths correspond to El 1028.7 to 1029.4 based on Plant Datum.

The elevation of the groundwater may vary at dif ferent times of the year and may be different during construction.

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FOUNDATION RECOMFENDATIONS Bas 0d on the borings performed to date, the foIlowi'.19 general conclusions and recommendations are presented.

De-tailed considerations of the foundation design will be.com-plcted after the, details of the structures are provided by YAEC.

1.

The subsoils are not susceptible to liquefaction or to the development of excessive strains during the design earthquake, based on the requirements of the e

Massachusetts Building Code dated April 1979.

2.

The proposed structures may be constructed on shallow foundations, founded on the firm natural soils below

.}

the surface till and below any soft deposits that may be encountered below the fill.

The anticipated depth of the fill is about 2 to 3 f t, which should

~]

be confirmed during construction at the actual

.J tank loca tion.

The foundations must be at least 4-ft-deep or, alternatively, the soils to a depth of at least 4 ft must be replaced with compacted non-f rost-susceptible soil.

At the perimeter of the tank a crushed stone ringwall or concrete ringwall will be required to resist the high shear stresses in the foundation soil at the edge of the tank.

If the

.}

scismic analysis indicates that uplift forces may occur, a concrete ringwall will be required.

J 3.

During the boring program, groundwater was encountered at a depth of 3.6 to 4.3 feet below the ground surface.

The groundwater level may vary at dif ferent times of the year and may be different during construction.

The excavation should be performed in the dry so that the l

adequacy of the final subgrade can be evaluated and f,}

compacted.

Hence, provisions for dewatering should be included in the specifications.

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1 in. = 2,000 ft 1}

Yankee Atomic Electric Co.

Fire Water Tank SITF. WCATION PLAN Westborough, Massachusetts Rowc Atomic Plant Janu.ery 3, 1980 F19-1

[' Gr.OT E.CHNIC AL. ENCINI t'H'i INC Pro ject 79617 v.s Ceat Sit et. maaliaC"n Stil5 u

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Fire Water Tank BORING LOCATION PLAN Westborough, Mas..achur.ctts powe Atomic Plant

' CI:OT F.CilNICAL ENGINELitS INC wir. Cut sit a Ma5%AC*ev$t i ts project 79617 January 3,1980 rig.

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. 9 G

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-' 0 v v V

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l l l li1i l

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a a S

r r S

E g g L

)

D R s 8

n el A

l ii i i i I

.I I 1iI

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w vl W J.

O o ii D

l I

N C

r l r u

T I

I ii i i i i I

lll l l

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1 I l I I i i iI I

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1 S S 6 E 6zU $a C S

~

.sI J.

m

l l

LEGEND FOR BORING IDCS Rowe Fire Water Tank Rowe, Massachusetts 1

Cround elevations at boring locations were determined by Yankee 1)

Atomic Electric Co. personnel.

2) Soll descriptions were made in accordance with the procedure des-cribed in ASTM D2488-69 as modified in CEI Technical Procedurc No.

54, rev. O, August 24, 1977.

3) Each boring log contains a graphic representation of the soil strata.

The thickness of each stratum is based on information obtained from lj the samples taken at the locations shown on each log. Since sampling was noncontinuous, it was necessary to approximate the location of many of the stratum boundarics.

1 The following legend is used for the graphic representation of soil strata:

1

. e. -

. '. C.I PF2 DOMINANTLY SAND; may contain gravel, silt, and/or boulders 1

f.
  • I ' '. .

and cobbles.

PFIDOMINANTLY SILT; may contain gravci, sand, and/or boulders 1

and cobbles.

1

,.Y,* *[*

SIMILAR PERCENTAGES OF SAND & SILT; may contain gravel and/or boulders and cobbles.

1 MOTTLED CLAYEY SILT & SILTY CLAY

]

FILL; predominantly gravelly, silty sand.

~

]

]

Project 79617 Geotechnical Engineers Inc.

November 30, 1979 l1 l

l1

i..

l..

1 PAOJE CT Ae Fire m" '*a*

LOC &Tirw.s s tae.t tea 'l*'ORR LID g(oulld Drit,,ll 3,Ce_ 90RmvG #40 ~PGIT 6e..a

,1 c

se t tet,_cr1 GROpdD [L._l0:4.J.J _ _

C4fC STWID., gree-r.l.1911 INCONatiCad seuje l LO7,ED Bf Ao trawdC,,,.p,.eengg,n CHECKID 87,_ nat.gefm. TOTA DEPtHa.e f.

DATC CCvstrTCD2.....a toe Saw Atuass5 Das y

EL pt e rse tret

  • etees ee n egg apvamCE of ag gong AND Acts Dis 1:1tTPf10N$

e.

es.-

aos.o r, p

e stLTv suoi 430s finee, steely graded, eerm.nded

(

f ce /t cr to es eder greens. ou, stee 1 1/8*. emnetaatifaed.

I 56 1

% 84 11 10 45 mica flakes, petroliferees oder, bram. (Sm! = probably

  • ***I"9 8'*

f&lt setorial.

eameed to 4.3 fa deptA

".9,g.,., -

I le >0

't i 85-2a: Top ?*. CaavTLiv. 8ttTV S u Ds Steller to $51

    • I' *#" O escept saa, stre 1*. Seannated appearance, some eust..

e

-S

"" "' II/IO.

$[*.

seleted laminattees.

    • d I*

,fif'.-

55-tes Sett.a e'. CmavTt17. StLTv Ba#0a *llt fine s.

E8 1 13 140/

88 I

g=

roller bito and sagotar grales. man. esse 1 3/6* mace flehes, black entery sering C..

ettA top portion that eenered. (Sma.

esing ou d6a.

g e ad bit

-2,.7, I'Q*t tell --

S*

  • 3 P' I'##I I
A*.

Ceavt117. StLTV Suo to seDv stLT: sand is sost1r 1

a=*ert er!!!!at CD-le f ane, subre.eded to engder gr'aIn'.7gravet up to 3*.

h*;

eenstratafeed. eice flames. sabbles and heelders op II"I8 **'8 **

- 10 etabilise hele h,f, to 3 f t. treee of eley, ellee. (sn-El.

C8*I I'

Id

  • tc e#
s$

1 w

~

F.d.

~

M-caavfLLv. 31t77 suo To scov stLT: Sand as mostly fane.

p

^* ?";

odeweed to eagde r gra6E w. et re l'. son.

~

8020 -"

85 4 4 4 2> 36 It 12 g

st r.tified, ei.. ii.ie., tr.ce of 1.r.. nee. <sa.ci._

l 5:'f,l

_g, m.n 7 F..*.

1 k.h yD ui

&A'$ " $o/l' l

e 1015-.

3 EvityttTV S AAD TO serv $@ S teller to CR-1. _

Co.3s

- 20

.. [t Co 2 le 36

=

I.'h<*

g '

e*

1

.M. a :,

AM CaavtLiv SILTv top to suDe STLT: $4aalar to 55-4.

{

1010 I".L.t.'

l

..#t. <

r SS-6 13 45 26 le 10 l.;h

- ts n

R.5

~

f. *il

~

1-

~

M.* cia n ut sitt, suo To sa.e, sitT, s tes s., to ss.d. e..

U.i.'i else 2*.

l

(

10c$..

85 1

?%.10 50 It

?

7,.I

- 3C eastee Depth it.e ft I

Der!>g was bach t!!!ed with greet.

9 leep.,.

l l

e.o.s es e s*

  • e.e s..e a... sec., to'se **

ac'E n go,g ptar matt a Tut g g s Cram.edwat e r se **ere***t

%8,*,

i e er* ee et. e.

3. open tale ea Ort. 4 19?'.
    • . "****'""*" I*

l -

"8'"""#'""*'

9 '*y<

  • e.e ee a 6 c < -

.e

u. s e. de r e a tte r re-el e' 5 ea

"'bM'""

e. e...

g, g g t tag.

3 l

5 e*'E.aue s.be r___1c - 1973 se3 A:t so.,,, M6 t v e s

4. e...

ce. est ery sore sample-nootnal 3 8/9 I

888-eest g_ _er a

son.e4

=0_

1____

[

_ m.................

=

l.

r I P EO.f tf __m- * '.T *.*' '***

LOCAf a0N "

8**** '** '8** OAILLED M C*il d n'i n t s.e o.. gcnuc peo 1

S c a.,

i aNCLsmL.v,ruzaL._ LOGr,f0 87.L. ct..se11sr c:.1. GROUND CL.tejja 12 C.*.ft 5fAAfLhaug, agig...

CHECacED Sra. o.s.nn.rg, ce TOTAL DEPftt 50 4 ft D.ift Cowp.CTfD_ctif,_.r_t t, too. SEMtWO =

  • ret 8tatte I'" M 4(wamus one y

soit suo acca otsemiefiosis e EL D( e f se v eet -

ete.s es.

etc son =ct or eoasac so ps..*

m 6

fr ft 4154 fines, widely graded, serewed.-d,

CPAWTll? SILT 7 SuDI to subangular graLas mas else 13/S*, alta flakes.

86-3 1-30 35 le 40 Advewed tw b

reste meat tap, brown. (Bs0.

eestat 16* 308 to 4.3 f t depth

~

Probable eetene 2.s.

i'4'..

from 8.l* to c

4 no,0

  • ..,*r'.-

.v

  • e i

mes.

/ *gs <,fLAArmat ce ettfr FInt swD. Sute att?. AND rier saigs c

tele advanced -

f esse 4 3/4*. sese fJakes, several swet.colosed leaine-,,,

88 2 15-11 3d 18 g

using 4-3/4*

7.'.' i b

eeller bit.

j[1*/

tamas tending to be soarser grained, occasteest piece.

Bewert dr111&ng M.'.'

of eeesse-o.dium seed, brown-tan. ($n, sr. a:L).

.f.4

  • fluid used to -

stabLlise bele. g'

...d,'

Mas. sina

.y Top T*

  • CDAVTLLY $1LTV Sas0 TO SANDY SILT left.

( 2%-1M M

H

'i

$5-3:

g's g,gfg.,,g,,g3,,,,,,,,,,,,,,, gg,, g,,

h ss-3s mottom ?* * $w07 s!Lt

  • 30t coerne gesined pa rticles.

10 sostly flae sand, mas, stee 3/4*. 1* thsch layer of (c)

,e elean fine emed, mica flakes, bramen-taa.

a..

t o.

b

... r.

. {.(

fines, widely graha, odredd

  • *i*' WN. Hm WD W6

..s 1020.,.

,[il;,

to angwtar grains, mas, else 1 3/p*, nea.tratified es I

gs.s

.s.so.1s 38 13 for l' tAick layer of eteen nedtwa-f ene sand (SP) eept

-Il 7, '*

D 4* f ree top of easele, weathe red sene around g*,.

,3 *,', y' saae gravel, mica flakes, et twe, isn).

y.6.,'

G.)

.': b:

~

D. caAvtLiv, stLTv $4**Di Stallar to 55-4 escept heeugeneews.

10ll~

ft{,(

85-5 79 16 14

,g 109/4*

2 %h.

...r 9:. 0 SILTS Sand is mostly flee, cnAVTLLT SILTT SaNO To $UDT 3010-ffp' secounded to angular grasas, maa. sare l'.

mesi-imels.sion 4.[*'

stratified, sica flakes bleek and white gg.g g.gg.g 3 33 g

- 25 g

N which appears ta be weathered robble piece, ettee.

d...[=vl

~

(Sm-4).

, $}g}

~

,'i,

~

+T

\\

V..t.'

N.-.

sItty suo to saum stLt samater to 85-6 but sid. caAvrtry,nor.t. a.od te 4.<>.

4...ad.a... e - /s,-

Sect..

u o

) is us t.w:

58-'

-so y..

.t..

n L..,.-- -_---.- - -- -

'.a a.

(continued en page 2) l 8000 -.

mas tant waTim Tue more s et e.s.' e.s.c ia.. ee e 30" e

me... n.e achusetts I

a o.t

.e.

Tamait atomst suctnje Ctmruv et.-e...

ee.,,

w..im..o.,=.

...em eit.

  • s t t e. er -,.

.e 9.I p.'.......

i'*1' pa's _me***her 30. 191* paocr ano O.s s

sn Sea

.e.

I I

soament so e*M I _ er _

m.................-..

o e

e I'

P sa[Cf M.U '1"*' T**h LOCatice4 *** La***'** '8*' 0% LED F C*de D'1 H tat.f.!L SCAit**. NO _8 ei.,t o. m CME 5 fM113.ar * -_1.19 t)

INCM0'd _yest.' e

  • LOGGED BY.1 n zalh: A GROU*.D EL.la n e 3L.,_

DATE CCraRETED_ ort *r 18. l$ SU.kNO *** *Pdic.ble CHECKED SYK-Del *M ers cc TOTAL DEPTH S0.6 ft 8I 1_

go stafn stwanal Oes y

tvet.

stees paa est ADvasat OF

$0th ass 0 AOCs DE SchiPf 60ns se ese s*

90eing

s is fe a.

a.

ss.1 7-30 3%

le le coacLLY stLTT suoi site fines, widely graded. serewaad,

1 seeing (4* 30) reets near top, brown. (s m).

i

.d..n.e. -

es..,,

.e,r. n..

...s.

l.

. 1

,la....

to 4.1 ft depth

~

Probable robble

~

from 1.S* to

$;.(

13 3a *.

3.S*.

T.
  • slri l

tie

,r d tMina.I er sitTv rtnt suo, suov sitt. AND Frer saw31 nos.

I sole advanced 88 2 15-11-24 le 9

eslag 4-3/4' N '.*l else t=3/0*. alca flakes, several rust-solored lamina-.

I retter bit.

' ? !.*,

tiens tending to be coarser grained. eccasional piece hevert drilling ". !:2 of coerse-endium sand, broen-tan, t sn. S P mL).

  • Y.!

fluid wed to i

ste lline hole.,. ?,(

' '4.m

/. '*

1029.,

88 3 7%-18-21 to 14 1-3/e*, sica flehen, tro a-tan. (s n-m; ).

--a

,_10 l

88 3s tottom ?*

SanDT sitT:

  • Me seerse grained particles <

mostly fine sand. mes. ease 3/4*. 1* t.hact larer of elean fine sand. mico flakes, brown-tan. (stL) 1

=

.E

  • .9 2 1020.

3

]

  • * * "' ** 3 F ' 'd
  • * '*d 8

'#l.'

      • .E'E'" ','. 's'*i ne 1-3/8. sees t ra ti r se d e s. _

ns..

.. u-i.

le 13 te arveler graans mas

- 15

(,*

eept for 1* thick layer of cle n medium fine sand (SP) 4* free top of sa ste, weathered sene around y,j eene gravel, alce flakes, ettve. (sa).

.]

~

Q.[

4:5.%

s:n

'.*r.

  • . r 10it~

p

,./.-4gCpgtl y, s itTV S A.'.m sieller to 88-4 em6ept he.ogeneous.

1

,...?.

Ps.47 16 14 b i,,..-

w.v.

ss.$

-a m

1 Q.t.I M..

.y le*rt.

sand is mostly f&ne, 1010 g*j CRAvtLLY., s.,f tT_Y_,sas.3 M suov sitT:

r

.e.

..r.

.e to.nol., g r a i...... se i. a.n.

f.*.*.'

st ratif seJ. nica flakes. bleek and white inclusion

$ * $ $'I '

I*

  • 1 b' '

(sm-PEL).

- 25 g

which appears to be weathered cobble piece, ellve.

I* '.*[

'.I'd Ny' T..,h.

100%..

N.' '

CaaV(LLY, stLTY spD To sa880T SILT stallar to 88-6 but Es.1 16 1 M 13 9

,{-

,,,gy,, y,,k and white inclus ten and mes. stae 1*3/t*.

~

- 3o L.fr.,

U',

4 e.

.4 !..

a.4 A.J.

(continued on page 23 1000

.oes ete a.

e.e.e.a.... e e Er

s..

monts s

acht pint entta Tank e w.

-c mm.v. Meesachusette es. p..

0.

ee tantst avonic stacTnJe Co.rPany o

ot t L.*c. er...e= e e

.a ee.ib....e. n....cm...

ts i

2 s; se

.e

..a..

.ait_ea e.es o. ne re

,.em,

m i t s

s 8

rest

!,,_en

  1. , oo...e me_

.e

... 4. Fhe.th.0%

O

e s

Peostcr,8r f.U.:f.tL* *.Pd.

t.OCaflON'..?.htt!* '8" DRutD Br c"H9 8'U!.!U E1. Doom p m,,,,

LOGCED 8T T. o. seiltIJL mound EL te n e et Dr.TE STa87E3_ggtete:,,.2 J212 INCUPtATIC#4_yetusa?

OATE Cop.ETEDA:az.4. tTt2 SEAF'8NC.:st'.assus.0L CHEC4 0 BY a nn. a ggL TOTAL DCPTM 4s,r_r,

o...

,,,s.

46...

net a panet or son, ano acca otscairrious eoemC g 'e n

H

=

m

'8*' "

    • F"****-

b

    • ^".*..'e 4.... '. e, r. i ns.'".". '*. i se 3,.

. w'.".'n o e s..

I.

^ * * * * * * * *

+-u-U se is si.,....

n-a ee apper portion montains roots, tan (spl.

I f t depth.

priemble 19 30 howider from

.c. -

3.s* to s.2.

y.,.

W..

[f,-

s30s isnes. sand' I

ss-3as Top l' and Botton 2* - SitTY SMD-is rearse to fine, wide

  • y graded, subangstar to anfuter.

$5-2 16 It 13 M

grains, maa. sise 1 3/' '. Mce flakes. etive-briners (sel.

f,1,*; SS-as : MAddle l' - scT11.f D.* f tT7 F!stt SA.'rD To S O DY $!LT:

g '

[.,5 *,

Little medium ser.d. ocr-s tenal coarse send to f ane

=

grawl mise flakes. s htw. brown, ts m ).

102S.-

3<=.,

]

M:.t.'

' ' ' " " * ' * * * * ~ ' * ' ' ' ' ' ' * * * -

"-8^'

5**"'"'""'

M ss.

in-u-se

)

nottled appearance.

p' a,ss-3as Botten e' - scTTttD SILTY Flert tuD To 8u07 $!tT:

- 10 3

s 1

f*O Occasional plee, of coarse to on e sand, saignt i.#.*(

plasticity, esca flates, et two-brtman. ISP-F.l.

W-3.,

1020

'*l,.*

1 Occasional piece of face SitTY fleet sus To SMDY litT Ej.k

*"' " " ""-"*"'"**2*"~r'-

I 1,. u-3 u

j g

u..

-n i'.,.'sj.i

.s

,.s,,."

1015.-

' ?;-

J.

CaAvitty. SILTv sano To SanDT SitT: Subrsunded to angula r

=

I'*

erganic edar'. elive, tam

  • .*I.

$5-5 29 10 12

- 30 g

<.1

.r

- ]

'?$I

. v. A y' e

  • i 1010 s *N*

l

$c'50 i

l si siestar to 55 S.

man.

3 w [

CRAVT:.tT, u

,g,, g. TTY S M O To sa.pv s!LT,Saled appearence, suo organic odor.

  • e l 4 3-2 T-30 H

,3,q l

55-6 p

l 31

' 2.,:.

i.*P.*-

Yb 3

gs,*g.

L M...

100g..

P;.. <

CRAVt11T. $ltTT SMS To SuDY S t'tT : Stedlar to 55-4.

[(4 ss T 49 18 11 q:..<

5 ig !<

Ma2

=*

feentiawd on pege II 3000 --

t 1

BD4 Fl ar man t f aW

  • e e0145

~

e.D s P.e e.e..e.*.o 'e **e

. se'aae so e. ***

noe,su...-

...it.

J

.e Tamu amate nuevese term l

e.s. e..

c. c tse e tho rowgh. Mestat%weelt*

( C

  • t.=f. of

= ees,ea l

C3 l

[,,

k' ' Ge o a.et..

s i se

.e.-

-e.

.a r 3.ge, 30 i 3,

,. w i.0 TTpi y

8 2

so.c =o se 1

or i

]

4..................

e

.1~-

a.......e....~...r....,~.~.~..

Flet D e c.3

.,. c f CA0uNO EL jo_tsA ft IN UN:'.flON. JssiltaL _ LOGGE3 8f Td_'d!hcrt,.

CsAIC $7ASIC 951;&*r..h.19.

aMlif e>.12 CHEC8TO OYO12/Poie.'Il TOTAL DE887H

.G 2.f t C.Lf1 CC48W.FTDJ. *.2st 8 19 %.( ANh0 _ ant Ot

  • f as !

I'"I agasamal Oss v

S' oil a'm p a0Cs Ot SCRIP f 60'el,

(4 ADva4Cg OF

  • g toeg.

stees ese est e0ains

. 5

,t e.-

99 ft as se 1

. - t,-ro.

/d[

nees -

[h? cam.Tttv. s,,etTv sane to so,v s_itii sia.it : te ss-s.

I n

9

'S

- Il g

pg

..t '.

!st::

/2 41

=

~

J U.'

-ll.1?

o9 s..

lY

f d.* canvtttv. sitTr se
o to sasov sitti sletter to ss-6. more.

u p*l fames. sment sones of bloca fine to coarse senJ. (Sal.

y 35 9 13 22 le 9

,.,. g;

- 40 g,

'2.%.

  • s b 1

,3 *f.,

9( *r

, ;.[

9M..

?.C.:

1 3

~

probable cobble *.4 Cra'.Ttty, sitTY Ee310 SMDY SfLT: stetter to $5 9. mas.

u== 1/ 3 5/*

tu= = 2

  • r" a'

.fi.e. sad Id.j P

  • = -

.S'

""*I,"*

- 45 bottaa of sample.

ni...

i.

46 Dettaa Dept % 46.2 ft 1979 Crov d.eter e6servation well testalled on Ortriber 4

- e sn.

tastellation Detas Depth to sottee of Pervioss secties.

3.2 f t

~

Depth to Top of Persions f estio.i. 33.8 f t

' So Depth to Top of Sand Sachts11 Aroice Pervaeus -

Section 29.1 ft Grout used to bactfiti around riser pipe.

Crowne.ater seeseureasat.

Depth to Croundwate r. It

=

Date 3.9 October 9.1979

3. 8 Octoher 10. 1979 t

3.4 1

October 11. 1979 d.3 October 23. 1979

\\

1 I

~

l 1

1 st>tr risc maTre TmL ao" e..

morts 1

.m s.o.s et e s.'. e.e.o.,... e s Roee, messoc%..etts

. w Tassait ATostle ELtcTaJ.C Co. rug et e..

we.u

...,9.....

.eti.

o at t 6 r. er

.e

f.. p..........

19617 eseg saa.-ad e r 30 1979,.ojig,,o

.e s t

  • to.e

~ --- ~ ~ -

d

    • GE __2. _or _ f scph.G mo 3

u

.4 9 8e t. G.%#.0 e %$ 4%4 $ h. 94 u

1

w eg

-8__

C*i18 t'8 8 8 "1.C*. DCFM NO 5 4 3.f t f _W. ' 8 ' e * * '*L!n' _ LOCdie0N'**

8** * * ' 8 *

  • DAu t0 Bf 7 A asa ta= tis =

INCucTICA hss.s kd1 LOGCCD Sf _L p_-_ r,inen crL GROUND EL.asen g.===

C.6fC 5fF= TID _re.cre 1.lere CHECKID gym. o. lee, erg. ct: 10Tf.L DE7Tet 22.3 ft OtTE Cew.ETED Oeset.ar d. sgre__ staAM her applie.ble E d e* 9L t Atesama$ Oss y

80tL a se0 ROCS 9t$Caspis0'e5 it D(PfM

~

dOvoeCE Or a;

toes.

ste.s ese etc D0e ne f.

2. d a --
  • es et e s' fr te m

sep s. sim se0. s20 f t es. wideer graded..

so de d t. se. g.i.e g r.8

. u se. gr.ees. ies f a.o.

        • 're'"** f/
    • la,
ies, I

t 52 1.

30 i.g t. s.0 ti eypr 2* omatains sects and topeol1. broen. ISMI -

depth witteet i....

dr!!1 lag f!wid.

probably fiti.

bettee $*

  • CaAWL.LT. S itiv SA' _S s20% fines, widely Besoved eastag E5=lesgraded, sereended to seengelas grates. mas. sine l'.

O*I and tet rieved esce fishes, orange. brown to block, t s m) - protably f all serple C5 8 from<.,V C

Su0t S telle r to ES-19. mas. s ase 2*..

y4Ltv SILTV

=='"

1030 "

laside of ses tn') l, (*

CS-la a,e,estf arataan present, eccosteaal 1/4* to 1/2" eAsen _

. ;.y tt e,. e,,,

gr.,.... d.e.ese t. me di

s. d.

D.epth to water m e..e w a

l a r t...... o......e 1.,/..

  • 8

..> ft.

.m... l m....

?,*.

strettfacetten metAreable by color. brown witA some

.. 3 i,...,

i.

ad.eated end ses-not end black solered senes

  • probably natural soil, p

((**.'

t 1.

esaced using

{.).k

.e 3-3/4" retter

.af 1029 --

Dit and severt i.C '$

!/.P:*.

Ceerte to fine grained. %5% fines. widely gradet, st"'

i drilling fluid

~

to stabilise 6

Mspounded ta seangwler gratas. eccasteast (4pe gravel

*I e

  • j;

- 10 ss.3 61213 le

.6.':,.-

ptere maastr.itf sed. eses fianes. be a ten ee g

}'.

black fine sand sones. ($w).

  • ~

sim sac, s.ad as.o.ese t. f t.e gr.t

d..te ly gr. fed..

1020 -.

71 euarounded to seongvler grains. swch elta flanes.

33.,

g ii./..

Probable boelder P..

trace of sley bromrn. ($rl.

k.

free 11.0' to m

4-to.g.

~

~

Hb.'

.I 30L5-*

,.[.,7,

. f,i'! _CeLTLL15p p stJt f anes. widely grated. seresde' ta site 1-3/e". upger 2* is bloca p

aasslar gratas. mas.

ce le r -

,0,.

fres=*ated gravel piece. Intensely stratifief Da

$5-5 14-10L-18 14

', ". * " -eica flote.. predominastly broe.

h10 (sh l.

- to R.*?

"oi. v.

.1 Preable embble '[...'

from 23.l* to

.d I

  • gop 4*

B ut*v s tLT awD s t m t o s IpJ u c i 1010,-

24.S*.

Occastea-

,,,D

$$-6 f tsees. t rere of L,y,*

el piece of coerse to f ame sand. esca l

===**

  • A.

(ML-SM).

stay. ettvv.

Botto= 6* = s neller to top d' hwt coatatas grovel te"*'

... -.h P

55 4:

31 50 IB 10

'"' II 15-6 f[

1 3/4*. ettee.

40 g.,

L.*r *'.

    • "'"* 1

~

5..

.j.$='

l 300%..'

s-Q l

,~ 1

~

a l -

. Q).

BILTT SpD 10 $ ahDW SILTS Sand is ausstly f a e.

m 1

- 30

.6,*

CeAvtLL?

wndely graded, sero nded to out=n-gwlar graf at.

maa.

t s ise 1/2*. mons trati f ied. mAc e flates. ell. IS***: 1 -

4':]

$$.1 43 23 le d

I h *<

)e Dettee of sortag 32.1 ft

  • **"1 Borlag =es bactf &lled =ltA grout.

1000.

?

2s

.r

....a t....

m.,C.

..t. s.... s m.eae*...~..

til Crewed-st er me***s e. eat take n to. e. N o sech*e t ta e

in open hele sa Octeer d. Ig?'

tarm.rt a w=1C BLJcisJC CU M ee e t e r -*he*

6.ae* e'.*e**.eae.

g., deys after com.lettaa of Wes tbosewP.. f%.a sst*5u'etts e

t t L.* e'* s'.eae=.*e e e

g *$' ' Se eeee ee.e.

dettling.

n a *= m ' =0 _ _.e it s

i s. se..e-me..

  • %nnu e S

s cs. c...g

.rie 4

1 sceo.r. so _

mast I

er _

4w.** ]

q3......._....*......

O e

I s e setettea pa n 0 % tIO gr C ite artist s ca. SOFuasG p.0 _ 18 Locatiost ri,e r, t,,o.,s.s psG.'Cf 2as.m. Ins.wstet.2eA_

v. o. setter Cas m3 g i

" '*I L0cre gy

    • "S*' l'"_

pdCL.s'aflCes C.L'E SfifT'3 o g se*hte CHECstID BY s. o.lenbere. C' t _ TOTAL O(PTH 61.7 ft S(ML dG est C.att CCW.( T E3 3r *ee e r_l t. 4 9 'e _

Stasaaal 0.e

.a t.e s.

e6ees ese etc dDweavCE Or S0st an0 a0Ca St%CmarteOss5 (k

St e f s8 I

sotiac to en e. -

ff fr en to e

CAAVELLT. SILTT SAND: %254 fines, widely graded, sereunded gg.g S.39 33 13 33

.e...i.r,r e.... e..... 1. w ee fi.ie s.,e~ r an, -

meastratif aed seats mee r top, bsown with emme si.st and g

I Send le seerse as fine g, y,9 black setored senes. ISW Est).

8.)

SS-la s Top 3*

  • CaavttLT EMO 8

grained, *lt f aaes, ondely graded, sereended to engatar gg gg, f

as 3 23 le 10 soie.de.need g,.i... on...i.e 3/4. mi. Ii.nes. er. isw.

%20t f6aes. widely I

E i.

Dettee 1* e+ C_aAvt uv. SitTV Sam'h esing b 3/4*

.'eb.1 88-le rgraded. seinended to engelar greses. sea. e&se l'.

setter bit and "[,'

est ated. stratif sed by seier, riest and tan, t$rl.

,, g E

severt drt11 3 !.:

ES-SAs 1br 6*

  • C_HvsttT SILTv sa*.0, sieller to 55-39. maa.,,

SS 3 II.

10 11 lag fluid te I

I stamitise tete.,g",

else 1-3/8", J' thica lerer of slesa send mest bettse.,

S$-2e i settee l'

  • 80TTtto s tLTT r $Nt SCO pet SauDe $1LT:

g Ors estocol eme rser groaned partiste to 1-3/s' e4ce probente embble Ife.

flakes, ellve-brew. to tre m. ( S p-ML).

between 85-2 Ut 55-4 CRAVtLLT. SILTT SAM O Simiter to $5-29. ellve, gray.

307%

and $$ 3 and e s-4 18 13 between 88-3

'8.b.'

brumen.

I

[

30.-

W*

n and 85 4.

es-sA, re, e. C.,vrtt, suO: 8.ad is so.rse to fi.e I

I grained. %St fn sdely graded. subroursed to negvie r

,r.......,a es, e 9 a, +

-.F.*4

._,g I

r ioes. eil.e. no.

a-a n

SS-Sti tetten 10*. Caavttty, sauce sitti s 304 sane.mostly.

fi

-g r.aed.... e..e i. u..

,,,e t -ie ed

-n.ue.

e J l 1.o.. e.s of.i....ut, fi e sand, ei.. fio...

1020-88"I II I'

$1-4: Stavtttf tuer Sitti Similar to 85 5s. me Stect bramen-elave, t ut.).

I u

e. 4, i..t.o.e,...e..t r.u f.ed..u.e.

I

]

-n I

Csavtur. satov SILT Similar to $$-6.

85 1 35 le 6

l,16

]

3016--

CaAvt u Y. SuCT $1Lt S Loiler to $5 54, entwo.

Y

~

M!i l

2 *:.

sed is Scio--

Q*4 ss-9 Top e. Caavtuv. sit _vv.sA50 to sasar s ttti j;1*j matly fine-grenned, serseNied to acquler grains mas..

ease 3-3/0*. sies flates. ellve. (SP-El.

p ts.

88-gi Bettee d'. 8,uj Top portion is erange gravelly 55 9 19-113-18 li lst Q(;b eoerse to fine sand and bet tee po rtion is olive ordium-..

3 1

  • '.*M fine sand with little gravel. (SC.

f,.%<

Q,.'

.a

- l).

noop.-

85 10a Top 0*

  • SANO: Caerse to fine grained, steam, widely

]

M; -(

graded, serMed to engeler grains maastratified.

  • /

mico flakes, ett.e. f tw).

l

'.* *,f,

sotto. 4*. E LTv Flat sa g geeinse of sandy sitt.

SS 10 76 te.

18 12

  • r SS-10es elfere, occasional piece of coasse-med.am sand. esca.

]

j;{.;-

- 30 le flakes. ellve. (Sm).

e g

'g. s 4. '

- ene -

e=

unum eum amo emeem ammese eseemm.uma emus em.m amm. em e= esm*

e-.I k@=- en eu.

mas anim..

eum em ens.

nee en-* = =em

.a -- e aus eum em em sc tia-d ea page :

]

_1 l

swt r mz =arta tus

~

.#, et. s... e a....

ee ne' e

moris ap e. me.serhvaette ew

=e

  • Yawugt ator C tLECTe&C Co.W*aS 9,

.s = 'e.-.'..,e.

. e.

.e'.

  • e me.tt.. #

..nm...ii.

ae

==

e it2 c y.

e..

e.,

=.e ee e so.

'y e.m. me._t** i' i

g i t...

.e -

.e

)

_.t m m...... -.... -.....

-W

a 9

le I

ere ~

t~r n - -- =

-in.w

,...~

Oart S raarID,.eue._m.L c.197* _ aNCU* NATION entisti._ LOGCCD 87 19JJJf r R GROUND EL sions o <<

t OA TT COu st E T ED,,,pg,g gh*1_11. 19 '9 SC ARING_ not.mette. C CHECKED Sf.g Dald... er TOTAL Dr.Pret a l_t e.

l EO#d EL 9(o fse etesanal Oss y Scil aseD aOCs DEStasefsoais f ees.

stoes es e oss AOvar.CC Or gg ee ese s' eoan.s

s I

te M

m b

o I

frontinued free rege il 7

5900

h..

CaAWtiv sitTY, sArr3 to sanet stLTs 54ad is sostly f &ae-

,,,,i, pf, e r.iaod..* re ade s== ar i"u.r a t=.==. >>" 2n..

(w gg 9

e

,,g.

g gg.gg

.u.. fi.s... eenir.u ried..

e. isa i.

n g

I free 3s.3' to !;& 's.*A Deviders an.s.

M. :

7:'J; 995..

h.; r*,,

1 G..t;

.~

- 40

>'s 7:

1 v..v 0

'{:'..CaActiv stLTv saws 10 suov stLT: sin 11.r to ss.11. mas.

l else 1*.

Es.12 21 34 It 9

M

,A.g 900--

L 46

]

.\\..

l}$

i.i.'s

-4 s 1

=

=

'****"'8 I

'***"'*"'"''"C',#"migh dry.treastA. slo. to.

Deb-ss.n e.no.no to as

=_

oatert.1 up to faae gr. wen rapid dit.t aur. we.k pl.stic thre.d. stiget pt.sticity.

t E

1 ettve. let. :bl.

.u so?TL.!D CIAft? SILT AND stLTY CtAT: Steil. to $s.23.

- 50 g

u.i.

n.n.

i.

a

=

1 y n

=

=

=

900--

.,y v*

Ts:s t

~

*N;. C*AWLLY stLTV suo to sett stLT* sinit.: ta 85 11. h.ed e-

  • =1="*a""a""*'==e5'""'*"-

- 55 T.y E

]

u.n 8,. n.

a n.

l n

t..
4. r h.m

. :'.*h.

.h 9'k d'

t.u 1

. ?.'l f[y" ;- ***e s Ln saws to saxev stLT staat. se ss.11.

?

"" Go E

se e

[**.31 s:r}

as.te M

Dettee DeptA = 61.9 ft 1

Sering =.s beck fs tled witA greet.

l l

l gyp

?

I as i

e$ces se e '. e e e m.e..e se= g so'se e esta s 804 Flaz tane ;aws e es

  • e.- em e IID*e. Mase.r%etette et e e w e g.o of

.pe 14NtJs ATO*lC SLtL7 AIC CU=7pv

... m...o. n.......ts.

g *p* C

  • t.- r* W o. we.ee*.eee

. 1 i

t 3

m it ie. s.a

..it.._....>., so a

,e w, n.

l s

..u a

e, a

no.... e.

l ]

9................_..

l

+

1 4.

Buried Equipment There is no buried safety-related equipment (e.g., pipelines, electrical conduit, etc.) to the south or east of the plant that could be affected by a natural slope failure.

5.

Site Plan Yankee drawing 9699-FY-1C, " Site Clearing," shows the location and identifies-all plant structure and appurtenances.

t l

l l

1 P

I.

1

6.

Seismic Response Spectra The seismic response spectra appropriate for the Yankee plant is presented in YAEC-1263 (selected pages attached).

rn

R

=

C a

W I

6 SEISMIC RESPO!!SE SPECTRA FOR T11E YANKEE NUCLEAR POWER STATION ROWE, MASSACHUSETTS

}

l

~

]

t '

Yankee Atomic Electric Company Nuclear Services Division 1671 Worcester Road Framingham, Massachusetts 01701 June 1981 L

r r

t 1

2.3 Composite Spectrum The Composite Spectrum shown in Figure 6.1 is developed based upon satisfying both of the following criteria:

(1) A conservative estimate of the 10-3 Probabilistic Spectra as shown in Figure 5.3, and E

(2) A peak ground acceleration (PGA) of 0.lg, and median spectral amplification factors applied to the PGA from NUREG/CR-0098 to detennine the constant acceleration portion of the spectrum.

5 These criteria determine the Composite Spectrum in which criterion (1) governs in the low frequency range and criterion (2) governs in the high frequency range. The constant spectral acceleration portion of the spectrum (S ) is determined by applying a median spectral amplification factor of a

2.12 for 5% critical damping f rom NUREG/CR-0098 to the 0.lg PGA.

The spectral velocity of 6 in/sec is chosen based upon criterion (1). The peak ground acceleration of 0.lg is more than three times the maximum calculated historical value at the Yankee site, based on 250 years of record (see Figure 4.2).

!L

-3 As is shown on Figure 6.2, this Composite Spect rum exceeds the 10 MS

{

estimates of the peak ground acceleration, spectral acceleration, and the spectral velocity. The Composite Spectrum envelopes all three reference 10-3 spectra.

2.4 De terminist ic Spect ra Compa ri son 3

Site-dependent response spectra are developed using recorded J

l N/s.

B

\\

~

l x

9

/

6.0 " /sec.

s

?

I

~

1 l

$. 3 0*._.

2 d

~

1 y

N 4

5% Damping i

"i v

v N

x F

~

s i

m-

[

ioa 10-8 IOo 10 PERIOD (SEC)

Figure 6.1 Composite Spectrum

/,

f References 1.

Weston Geophysical Corporation, 1979. Geology and Seismology Yankee Rowe Nuclear Power Plant.

2.

Terzaghi, K., 1962.

Stability of Steep Slopes on Hard Unweathered Rock, Geotechnique, Vol. 12, pp. 251-270.

3.

Geotechnical Engineers, Inc., 1980.

Report on Foundation Investigation, Fire Water Tank, Rowe Atomic Plant.

g

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