ML16342D320
| ML16342D320 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 06/07/1996 |
| From: | Bateman W NRC (Affiliation Not Assigned) |
| To: | Rueger G PACIFIC GAS & ELECTRIC CO. |
| References | |
| TAC-M93848, NUDOCS 9606110187 | |
| Download: ML16342D320 (6) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 205554001 June 7,
1996 go- >74 Hr. Gregory H. Rueger Pacific Gas and Electric Company NPG - Hail Code AlOD P.O.
Box 770000 San Francisco, California 94177
SUBJECT:
RE(VEST FOR UPDATE OF ENVIRONHENTAL REPORT FOR DIABLO CANYON, UNITS 1
AND 2 (TAC NO. H93848)
Dear Hr. Rueger:
Information that has recently come to the NRC staff's attention raises questions about information that PG&E has submitted to the NRC in its Environmental Reports in support of its construction and operating license applications for Diablo Canyon Power Plant, Units 1 and 2 and its construction permit recapture amendment issued last year.
The new information comes from a Hay 12, 1995, 'report of the staff of the State of California Regional Water
,guality Control Board for the Central Coast Region.
The Regional Water Board, as you know, is the agency that issues the National Pollutant Discharge Elimination System (NPDES) permit required for operation of PG&E's Diablo Canyon Power Plant.
The Water Board's report concerns the monitoring program for the thermal discharge from the Diablo Canyon Power Plant.
The Water Board concludes that significant ecological changes have occurred in Diablo Cove since the discharge began in 1985 and continue to occur.
The NPDES permit is intended to limit the impact of ocean discharges to an initial zone with a goal of maintaining a balanced indigenous population outside the zone.
However, the Water Board found that in recent years significant thermal effects have been observed as far as about 3,000 feet northwest of the discharge point, well beyond the zone of initial dilution.
(In the Final Environmental Statement (FES) for the construction and operation of the Diablo Canyon Power Plant (1972) and the 1976 Addendum, the NRC staff had concluded that the effect of the thermal plume outside Diablo Cove would be minimal.)
The Water Board report also addressed impacts of the intake structure.
It concluded that the level of environmental impact due to the operation of the intake at Diablo Canyon was indeterminate and that the entrainment
- studies, which were supposed to determine the number of marine organisms drawn into the cooling water system, were neither statistically nor ecologically reliable because the sampling locations did not provide representative data.
The Water Board has concluded that an entirely new 316(b) study must be conducted in order to determine impacts.
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Hr. Gregory H. Rueger dune 7, 1996 The Atomic Safety and Licensing Board decision resolving all environmental issues in the Diablo Canyon operating license proceeding, 7
NRC 989 (1978),
included a number of license conditions for the protection of the environment.
The first of these required PG&E to file an analysis in the event of any modification of the NPDES permit and specified the matters to be addressed in that analysis.
Another condition required PG&E to furnish the NRC with copies of reports and demonstrations for EPA's 316(a) and (b) demonstration program.
- Further, Section 5.4. 1 of Appendix B to the Diablo Canyon license requires PG&E to submit an annual environmental operating report prior'o Hay 1 of each year and specifies the matters to be addressed in that report.
In view of the above, the staff requests that PG&E update its Environmental Report within 60 days of the date of this letter.
If you have any questions regarding the staff's request, please contact Steven D. Bloom at (301) 415-1313.
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' Sincerely, Original Signed By William H. Bateman, Director Project Directorate IV-2 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket Nos.
50-275 and 50-323 cc:
See next page DISTRIBUTION:
~Docket Filed JRoe WBateman DMCrutchfield TRQuay SNewberry JHWilson APHodgdon JCallan VVanCleave WBrown JRoe WRussell
- KPerkins, WCFO PUBLIC EGAl SBloom BKGrimes DBMatthews FAkstulewicz IJLee DShapiro ELWilliamson PVJoukoff RWise RZimmerman
- JDyer, RIV EPeyton DCENVIRN.LTR
- See Previous Concurrence OFC PD4-2 LA PD4-2 PH DRPH*
PD4-2 D
OGC*
NAME EPeyto SBloo BGrimes WBatema AHod don 4 25/96 OFFICIAL RECORD COPY DATE 6 7 96 6
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96 5/7/96
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Hr. Gregory M. Rueger June 7,
1996 CC:
NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Dr. Richard Ferguson, Energy Chair Sierra Club California 1100 11th Street, Suite 311 Sacramento, California 95814 Ms. Nancy Culver San Luis Obispo Mothers for Peace P. 0.
Box 164 Pismo Beach, California 93448 Hs. Jacquelyn C. Wheeler P. 0.
Box 164 Pismo Beach, California 93448 Hanaging Editor, The Count Tele ram Tribune 1321 Johnson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Chairman San Luis Obispo County Board of Supervisors Room 370 County Government Center San Luis Obispo, California 93408 Hr. Truman Burns Hr. Robert Kinosi an California Public Utilities Commission 505 Van Ness, Room 4102 San Francisco, California 94102 Hr. Steve Hsu Radiologic Health Branch State Department of Health Services Post Office Box 942732 Sacramento, California 94232 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower
& Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Christopher J.
- Warner, Esq.
Pacific Gas
& Electric Company Post Office Box 7442 San Francisco, California 94120 Hr. Warren H. Fujimoto Vice President and Plant Manager Diablo Canyon Nuclear Power Plant P. 0.
Box 56 Avila Beach, California 93424 Diablo Canyon Independent Safety Committee ATTN:
Robert R. Wellington, Esq.
Legal Counsel 857 Cass Street, Suite D
Monterey, California 93940
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