ML102110376

E-Mail from Noggle to Beissel, a Couple of VY Maps

ML102110376
Person / Time
Site:	Vermont Yankee
Issue date:	03/02/2010
From:	Noggle J NRC/RGN-I/DRS/PSB2
To:	Beissel D Office of Nuclear Reactor Regulation
References
FOIA/PA-2010-0209
Download: ML102110376 (6)

Text

Beissel, Dennis From: Noggle, James i \

Sent: Tuesday, March 02, 2010 1:52 PM To: Beissel, Dennis UfT\Q M-

Subject:

A couple of VY maps Attachments: VYWell locations.pdf; VYGWcontoursJan%2010_REV-1.pdf I have attached an early site groundwater contour map and a recent map of monitoring well locations. The corresponding tritium concentrations are in the following table.

GZ-I GZ-2 GZ-3 GZ-4 GZ-5 GZ-6 GZ-7 A*

pCi/L <700+220 < 1800+570 705- 1400- <700+220 <660+200 737,000-40,000+1300 3200+220 891,000+5350 Date 11/07-2/10 2/3-4/10 11/09-2/10 1/30-2/7/10 11/07-2/10 1-2/10 2/10 GZ-8" GZ-9 GZ-10 GZ- 1 GZ-12 GZ-13 GZ-14 pCi/L dry <660+200 2.2- <660+200 6900- <660+200 63,400-2.45E6+9000 15,700+900 85,800+1800 Date 2/10 2/10 2/10 2/10 2/10 .1-2/10

• GZ-8 is upgradient from the plant and this groundwater monitoring well will be used for evaluating groundwater flow characteristics Regards, Jim lorwon in

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F Irna Use nly- ,No Summary from the Afternoon Phone Call with VY on Tritium (4/7/10)

Sample results provided on the call:

" GZ 52,000 pCi/L

• GZ 2,400 pCi/L

" GZ 757,000 pCi/L

" GZ Less than minimum detectable

" GZ-1 1 - 750 pCi/L

" GZ-1 2 - 267,000 pCi/L

• GZ-13D- 1,200 pCi/L

" GZ-14 -258,000 pCi/L

• GZ 710,000 pCi/L

" GZ 130,000 pCi/L

• GZ 2,028,000 pCi/L Relative to well GZ-1 1, they stated that the 750 pCi/L result is from a 3/22 sample, which was taken prior to when they began pumping water as a part of their groundwater remediation activities. They stated that they do not view this as an unexpected result, and they stated that there is no reason to believe it is a new leak.

They stated that they shifted from extraction well GZ-EW-1 to extraction well GZ-EW-1A and are getting a better flow rate of approximately three gallons per minute. Additionally, they are continuing with preparations to run extraction water to the rad waste system.

They estimated that the "clean" frac tank currently contains approximately 6,000 gallons of water, and the "dirty" frac tank currently contains approximately 15,000 gallons of water.

They are continuing with soil remediation preparations.

Technical stakeholders from the state of New Hampshire were on site today (4/7).

They stated that they will have their public forum on Monday (4/12).

,ý For ral Use Only - Not for Public isc osure 3:3 "PM

Reference and Groundwater Elevation Information for Bedrock Wells Vermont Yankee Vernon, Vermont Well Name Locationlunction. Total Bottom Reference Groundwater Groundwater Groundwateri Kn Depth Elevation .jtElevation Elevation Elevation Elevation.

(ft) (ft) 15-Mar-10 31-Mar-10 96-Apriýl-10.

COB Well VYNPS, currently 350 -97.42 253.28 225.3 225.5 225.3 out of service, formerly served COB Building PSB Well VYNPS, currently 503 -239.61 263.69 256.1 254.5 256.0 serves PSB Building South Well VYNPS, limited 496 -242.24 253.86 235.6 237.7 237.9 service to site Edson Well Along Gov. Hunt 171 101.23 272.93 253.6 254.4 255.0 Road, currently out of service Tuttle Well Along Gov. Hunt 244 29.43 273.33 258.9 258.9 259.4 Road, currently out of service Thomas Along Gov. Hunt 215 58.37 273.27 No transducer No transducer No transducer Well Road, currently out deployed deployed deployed of service DRAFT - Preliminary Progress Summary Table 4-15-10

COR i*VF(OLIL VERMONT WATER DRlING YANKEE BEDROCK WELL I

CONNECTICUT RIVER GZ-/.

OFF-LINE

_MONITORING WEUL INSTALLEC FLOWW:

_ , GROUNDWATER ELEVATION IN FEET (FEBRUARY 26, 2010)

TRITRJM ACTI[TY (

(FEBRUARY B, 312010)*-

ý.Z G PI MONITORING WELL INSTALLEDNOVEMBER 200?

320 7.$OTHER VERMONT YANKEE "MONITORIN G WELL 225" INFERRED GROUNDW, CONTOUR IN FEET

., (FEBRUARY 26,2010) l- INFERRED GRO.UN ,

FLOW DIRECTION NOTES:

• ' ." 3/4 .I GROUNDWATER CONTOLRS AND FLOW DIRECTIONS INFERRED FROM GROUNDWATER ELEVATION MEASUREMENTS COLLECTED FROM WIDELY SPACED MDNITORING WELLS ON FEBRUARY 26.2010. ACTUAL CONDITIONS MAY VARY.

2. TRITIUM ACTI'ITY LEVELS EASED ON GROUNDWATER SAMPLES COLLECTED

• BY OTHERS AND ANALYZED BY VERMONT YANKEE BETWEEN FEBRUARYB. 2601.

3. FLUCTUATIONS IN LOCAL GROUNDWATER ELEVATIONS MAY OCCUR OVER TIME DUE TO RAINFALL SEASONAL CHANGES IN THE RATE OF EVAPOTRANSPIRATION. RELEASE RATES FROM THE LOCAL DAM.AND OTHER VARIOUS FACTORS.

4. THE LOCATIONS AND REFERENCE ELEVATIONS OF MONITORING WELLS AND DRINKING WATER WELLS WERE SURVEYED BY SOUTHERN VERMONT ENGINEERING OF BRATTLEBORO VERMONT (EXCEPT GZ-20 AND GZ-21, WIHICHWERE ESTIMATED PENDING FORMAL SURVEfl

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• ~L... .5 BASE PLAN. INCLUDING SITE TOPOGRAPHW. pROVIDED TO GZA IN ELECTRONIC FORMAT BY VERMONT

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3W53 YANKEE.

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• - SCALEIN FEET 4 'K'. ~" -~

K ENTERGY VERMONT YANKEE

- ~ ' N. 'i#~24O SB VERNON, VERMONT

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TRITIUM CONCENTRATION PLAN I!

,~. -. $'*... mB

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-GZ18 GZ-3 GZ-14 GZ-4 k GZ-13 GZ-5 GZ-10 AD2r i 0 .. ~ 4"'4 GZ-O Z G-1[ j..

GZ-19 GZZ-1 0 no GZGZm1I-l

• GGZ-170 GZ-1 20 400 0 100o 200 4o00 SCALE IN FEET

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