ML20151D194

Informs That 810122 & 07 Memos Re Groundwater Monitoring Covered by Current Std Radiological Tech Specs & Radiological Assessment Branch Technical Position. Radiological Environ Monitoring Program Encl

ML20151D194
Person / Time
Site:	Duane Arnold
Issue date:	02/20/1981
From:	Murphy T Office of Nuclear Reactor Regulation
To:	Higginbotham L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20004F549	List: ML20151D194
References
FOIA-81-93 NUDOCS 8103250265
Download: ML20151D194 (4)

Text

. .

T 7 '3 V V F U T FEB 2 01981 g Centr T. Murphy MEMORANDUM FOR: Leo Higginbotham, Chief Radiological Safety Branch, IE:HQ

/ FROM: Thomas D. Murphy, Chief Radiological Assessment Branch, DSI

SUBJECT:

YOUR MEM0 0F JANUARY 22, 1981 - REQUEST FOR ACTION - GROUND WATER MONITORING The' questions raised in your memo of January 22, 1981 and the accompanying memo of A. B. Davis of Region III dated January 7,1981 are already covered by andcurrent standard Radiological the Radiological Assessment Effluent TechnicalPosition Branch Technical Specifications (BTP). (RETS)There ar'e now no " Standard Environmental Technical Specifications." All r~adiological environmental technical specifications are now included in the RETS.

Copios of the appropriate sections of the RETS and the BTP for waterborne environmental monitoring are attached. Note that these current regulations do require monitoring of the water sources referred to in the Davis letter i.e. where " wells are as important as private and public water supplies" and "where all public and private water sources are ground water." This is exactly the type of ground water monitoring Duane Arnold has incorporated in their Technical Specifications (see attachment).,

However, we do not require ground water monitoring when the wells are up-gradient from the facility. This position is consistent with our overall approach of monitoring real andepotential significant pathways to human beings.

Thomas D. Murphy, Chief Radiological Assessment Branch Division of Systems Integration 1

Attachment:

)

As stated j l

cc: D. Ross W. Kreger p _ , _ j teg*

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i TABLE 3.12-1 (Continued)

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.  ?' RADIOLOGICAL ENVIRONMENTAL HONITORING PROGRAM

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Number of Samples 3 Exposure Pathway and Sampling and Type and Frequency j and/or Sample Sample tocations** Collection Frequency of Analysis

3. WATERBORNE k\

a. Surface (Locations 46 and 47) Composite

• sample collected Gamma isotopic analysis over a period of $ 31 days. - of each composite sample.

Tritium analysis of com-

, posite sample at least once per 92 days.

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b. Ground (Locations 48 and 49) At least once per 92 days. Gamma isotopic and i a tritium analyses of each 2 sample.

, h" c. Drinking (Locations 50-52) Composite

• sample collected I-131 analysis of each over a period of $ 14 days, composite sample; if I-131 analysis is and j performed; or 1

Composite

• sample collected Gross beta and gamma over a period of 5 31 days. isotopic analysis of each composite sample.

Tritium analysis of

composite sample at least once per 92 days.

d. Sediment from (Locations 53) At least once per 184 days. Gamma isotopic analysis Shoreline of each sample.

1

• Composite samples shall be collected by collecting an aliquot at intervais not exceeding 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

, ^^bunple locations are shown on the figure in the ODCH.

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TABLE I (Continued)

tnposure Pathway Number of Samples

• Sampling and . Type and frequency

and/or Sompte .and Locations Collection Frequency, of Analysis .

in!I lutulu1E k %n l ai.e" I sample upstream Composite sample G**** f'"t E i ' ""*1 Y 'I' one month period h *T*"

i I sample downstream monthly. Composite for tritium analyses quarterly Ground Gamma isotopic and

- Samplesfrom1or2sourgesonly if likely to be affected Quarterly tritium analysis quarterly j T Drinking I sample of each of 1 to 3 of Composite sample I-131 analysis on each 4

O the nearest water supplies over two-week period composite when the dose Q could be affected by its if I-131 anlysis is calculated for the con-

, Z discharge performed, monthly sumption of the water composite otherwise is greate{ than 1 mrem Q

l sample from a control location per year. Composite for M

==~a. Gross p and gamma isotopic y analyses monthly. Compo-l site for tritium analysis i&s quarterly l C; '

l {i'Sedimentfrom I sample from downstream area Semiannually Gamma isotopic analyses i Shoreline with existing or potential semiannually J

recreational value

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a i U Ihe " upstream sample" should be taken at a distance beyond significant influence of the discharge. The "down-stream" sample should be taken in an area beyond but near the mixing zone. " Upstream" samples in an estuary must he taken tar enough upstream to beyond the plant influence.

f Generally, salt water is not sampled except when the receiving water is utilized for recreational activities.

' Composite samples should be collected with equipment (or equivalent) which is capable of collecting an aliquot at time intervals which are very short (e.g. , hourly) relative to the compositing period (e.g. , monthly).

I Groundwater samples should be taken when this source is tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties are suitohle for contamination.

. _ _ , _ -~ -

TALLE 4.3-1 (Continued)

- ENVIRONMENTAL RADIOACTIVITY tt0NITORING PROGPRf FOR THE DUANE ARNOLD ENERGY CENTER j SAMPLING DESCRIPTION SAMPLE FREQUENCY ANALYSIS RDIARKS Type of Sample Sampling Point Operational Saeple ,

Point Descrip tion Program Surface 89 90 8#

Performed if gross unter 49-52 beta activity exceeds (Cont'd.) 10,pci/1 and on a quarterly basis.

, Gro und 53 Treated Municipal Monthly

• Unter Water Gross beta 4 54 Inle t to Municipal ,

Gamma isotopic

! Water Treatment Sys. analysis Camma isotopic analy-57-60 4 off-site wells - sis util be performed (in vicinity of - on each sample in .

site) which the gross betu activity exceeds 10 pCi/1.

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Daily grab saeple of i

' '# G E untreated municipal-uate r is. composi ted

• 5 for ronthly analysis.

i' t: Tuo hour grab sanple

"' ? of treated cauolci; al n2 , water is coapo ited

for nonthly analysis.

• • E) Ground Tritium Monthly sacples-vill be composited t

Water quarterly for (Cont'd.) .

. tritiu'm. -

89 90 Performed if gross **

• ~ # 8# beta activity Ee f.5$5k exceeds 10 pCi/1 O fd<

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and on a quarterly

• - -' basis.

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