ML19322E323
| ML19322E323 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/06/1980 |
| From: | Parr O Office of Nuclear Reactor Regulation |
| To: | Ferguson J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8003270186 | |
| Download: ML19322E323 (3) | |
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UNITED STATES
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%,.....f MAR 0 6 1980 DocEet flos. 50-404/405 Mr. J. H. Ferguson Executive Vice President - Power Operations Virginia Electric & Power Company P. O. Box 26666 Richmond, Virginia 23261
Dear Mr. Ferguson:
SUBJECT:
fl0RTH A?itlA UflITS 3 Afl0 4 HYDROLOGIC Ef!Gl*lEERIflG -
QUESTI0 tis REGARDIllG GROUtiD WATER In a letter dated August 21, 1979, you proposed changes to design basis groundwater levels for florth Anna, Units 3 and 4.
We have reviewed the information contained in your August 21,'1979 letter and find that we will require additional information to complete a review of the revised levels. The specific information required is listed in the Enclosure.
Please contact us if you desire any discussion or clarification of the information requested.
Sincerely, b.b Olan D. Parr, Chief Light Water Reactors Branch flo. 3 Division of Project Management Enclosura:
Request for Additional Information cc w/ enclosure:
See next page i
8003270186
\\
Mr. J. H. Ferguson f*?M 0 G 1980 cc: Honorable Frederick S. Fisher Mr. Peter S. Hepp Assistant Attorney General Executive Vice President Commonwealth of Virginia Sun Shipbuilding & Dry Dock Company 1101 East Broad Street P. O. Box 540 Richmond, Virginia 23219 Chester, Pennsylvania 19013 Michael W. Maupin, Esquire Hunton, Williams, Gay & Gibson P. O. Box 1535 Richmond, Virginia 23212 Mrs. June Allen 412 Owens Drive Huntsville, Alabama 35801 Mr. James Torson 501 Leroy Socorro, New Mexico 87801 Mrs. Margaret Oletrich Route 2, Box 568 Gordonsville, Virginia 22942 William H. Rodgers, Jr., Esquire Georgetown. University Law Center 600 New Jersey Avenue, N. W.
Washington, D. C.
20001 Michael S. Kidd U.S. Nuclear Regulatory Commission P. O. Box 128 Spots 1vania, Virginia 22553 If Clarence T. Xipps, Jr., Esquire 1700 Pennsylvania Avenue, N. W.
Washington, D. C.
20006 Carroll J. Savage, Esquire 1700 Pennsylvania Avenue, N. W.
Washington, D. C.
20006
EtiCLOSURE m,
HYOROLOGIC EfGIflEERIt!G QUESTI0flS fl0RTH Af!ilA UtlITS 3&4 00CKET fl05. 50-404/405 1.
Provide the bases for each of the revised maximum groundwater elevations at various structures, as shown on pages 1 and 2 of your August 21, 1979 submittal. Discuss the computational models used to predict the ground-water levels and provide all input parameters to the model such as permeability, porosity, time, starting groundwater levels, etc. Discuss how extreme rainfall conditions could affect groundwater levels.
2.
Provide the current groundwater levels in the site area and any water level trends which formed a basis for your revised estimates.
3.
Discuss the effect of hi.), riorth Anna Lake levels on groundwater levels at the site for both long-term and short-term (flood) conditions.
4.
Discuss further how modifications were made to groundwater levels at those locations "where conditions appear capable of producing locally higher groundwater levels".