ML20133L496

Forwards Comments That Need to Be Resolved Before Final Approval of Util Submittal Entitled, Proposed Sampling & Survey Plan for Effluent Pathway,Ft St Vrain Final Survey Program

ML20133L496
Person / Time
Site:	Fort Saint Vrain
Issue date:	01/07/1997
From:	Pittiglio C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
To:	Crawford A PUBLIC SERVICE CO. OF COLORADO
References
NUDOCS 9701220042
Download: ML20133L496 (5)

Text

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<*l January 7,1997 Mr. A.: Clegg Crawford Vice President, Electric Operations Public Service Company of Colorado P.O. Box 840 Denver, Colorado 80201-0840

SUBJECT:

PROPOSED SAMPLING AND SURVEY PLAN FOR THE EFFLUENT PATHWAY, FORT ST. VRAIN FINAL SURVEY PROGRAM-

Dear Mr. Crawford:

The Nuclear Regulatory Commission staff has reviewed the Public Service Company of Colorado's (PSC) Seatember 11. 1996, submittal (P-96068) entitled.

" Proposed Sampling and Survey )lan for Effluent Pathway. Fort St. Vrain Final Survey Program." We have enclosed a number of comments that need to be resolved before final approval of the submittal.

If you have any questions, please contact me, at (301) 415-6702, or David Fauver, at (301) 415-6625.

Sincerely,

[0RIGINAL SIGNED BY:] ,

Clayton L. Pittiglio. Project Manager Low-Level Waste and Decommissioning Projects Branch Division of Waste Management j Office of Nuclear Material Safety '

and Safeguards i Docket No. 50-267 i License No. DPR-34 )

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Enclosure:

As stated l

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+4 ** / January 7,1997 Mr. A. Clegg Crawford Vice President Electric Operations Public Service Company of Colorado P.O. Box 840 Denver. Colorado 80201-0840

SUBJECT:

PROPOSED SAMPLING AND SURVEY PLAN FOR THE EFFLUENT PATHWAY.

FORT ST. VRAIN FINAL SURVEY PROGRAM

Dear Mr. Crawford:

The Nuclear Regulatory Commission staff has reviewed the Public Service Company of Colorado's (PSC) Seatember 11, 1996, submittal (P-96068) entitled. i

" Proposed Sampling and Survey plan for Effluent Pathway, Fort St. Vrain Final Survey Program." We have enclosed a number of comments that need to be ,

resolved before final approval of the submittal. l If you have any questions, please contact me, at (301) 415-6702, or David I Fauver, at (301) 415-6625.

Sincerely.

Clayt L. P ttiglio P ect Manager Low-Level Waste a e mmissioning Projects Branch Division of Waste Management Office of Nuclear Material Safety and Safeguards ,

Docket No. 50-267 License No. DPR-34

Enclosure:

As stated cc: See attached list

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Fort St. Vrain Letter dated: January 7, 1997 Docket No. 50-267 License No. DPR-34 cc: <

Mr. Wayne H. 8runetti President, and Chief Executive Officer Public Service Company of Colorado P.O. Box 840 Denver CO 80201-0840 Regional Administrator. Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive. Suite 400 Arlington TX 76011 Chairman Board of County Commissioners of Weld County, Colorado Greeley, CO 80631 Regional Representative Radiation Programs Environmental Protection Agency 1 - Denver Place 999 18th Street. Suite 1300 Denver. CO 80202-2413 Radiation Control Division (RCD-D0-B1)

Colorado Department of Health 4300 Cherry Creek Drive South Denver CO 80222-1530

-Commitment Control Program Coordinator Public Service Com3any of Colorado 16805 Weld County Road 19-1/2 Platteville. CO 80651 Mr. M. H. Holmes Nuclear Licensing Manager Public Service Com)any of Colorado 16805 Weld County Road 19-1/2 Platteville CO 80651 i

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NRC Comments on Public Service Company of Colorado Submittal, " Proposed Sampling and. Survey Plan for Effluent Pathway, Fort Saint Vrain Final Survey ,

Program," September 11. 1996 1)- The RESRAD analysis for' determining the site-specific guideline values used a scenario that assumes the open land areas will continue to be .

used as pasture land. Additional information is needed to support the assumed future land use and potential future dose to members of the  :

public. PSC should use the default parameters from Scenario C of PG 08 to determine the most conservative unrestricted use dose and compare this: dose with the dose using the site-specific guideline values PSC

-believes to be more realistic. Approval of the alternate scenario will depend on the magnitude of the differences between the baseline and guideline values, the time required for the dose from Scenario C to be reduced to acceptable levels by radionuclide decay (which provides an indication of how long the ' alternate land use scenario would need to be  !

in place), and the strength of the justification for the alternative scenario, t

2) Were subsurface samples collected during characterization to support the PSC conclusion that contamination is limited to the surface? If so, please provide the results. If not, please provide additional information supporting this conclusion.

3) Were each of the soil / sediment samples analyzed for all of the ,

radionuclides listed in Table 7.1? What information was used to select  !

. the radionuclides listed in Table 7.1? Why was Sr-90 not included in

the table?

4) The characterization data were used as the primary justification for reducing the sample size in the effluent pathway survey units. Please

, provide the effluent pathway characterization results for NRC review. ,

There is insufficient justification provided for not providing sample j frequencies consistent with NUREG-5849 for affected areas. If p characterization data meet the same data quality objectives as the final survey, these data can be used as final survey data.

! 5) Was the potential for groundwater contamination evaluated?

6) The Jay Thomas Ditch was designed as Affected Class 1 thus requiring

100% scan. Table 7.4 designates the area as Affected Class 1 but does not reflect the 100%' scan for the Jay Thomas Ditch. What is the basis for this discrepancy?

l 7) What is the area of the sediment storage area?

Enclosure

• ' . Mr. A. Clegg Crawford Vice President, Electric Operations Public Service Company of Colorado P.O. Box 840 Denver, Colorado 80201-0840 _

SUBJECT:

PROPOSED SAMPLING AND SURVEY PLAN FOR THE EFFLUENT HWAY, FORT ST. VRAIN FINAL SURVEY PROGRAM

Dear Mr. Crawford:

The Nuclear Regulatory Commission staff has reviewed e PubTic Service Company of Colorado's (PSC) September 11, 1996, su ttal/(P-96068) entitled,

" Proposed Sampling and Survey Plan for Effluent P hway/ Fort St. Vrain Final Survey Program." We have enclosed a number of ents that need to be resolved before final approval of the submitta .

If you have any questions, please contact D id Jf. Fauver at (301) 415-6625I or I can be contacted at (301) 415-6702.

Sintop rejL., Pittiglio, Project Manager Cl

-l.evel Waste and De' commissioning Projects Branch D141sion of Waste Management ffice of Nuclear Material Safety and Safeguards Docket No. 50-267 License No. DPR-34

Enclosure:

As stated cc: See attached list DISTRIBUTION: Central Fil . NMSS r/f JGre Dir r/f

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