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DEPARTMENT OF TIIE ARMY <br /> �1Wd.- SHARPE ARMY DEPOT <br /> , LATHROP, CALIFORNIA 95731 <br /> REPLYTO <br /> •y.J <br /> ATUNT" <br /> AT TCNION Of <br /> March 22, 1990 <br /> Environmental Program Office <br /> SUBJECT: Use of Well AG02 fur Emergency Water <br /> Mr. Larry Ed. Burgess, Sr. <br /> Hudter.h, Inc. <br /> Post office Box 1240 <br /> Perris, California 92310 <br /> Dear Mr. Burgess: <br /> In d meeting on March 21 , 1990, the Proposdl by BMG2 to close walls AG-9 <br /> and AG-5 and use AG-12 for emergency use dors not appear to pose any adverse <br /> impacts to the Remedial Investigation work underway at Sharpe Army Depot. <br /> AG-12 is about 9ou feet from the edge of a fCE plume in the C-zone aquifer, <br /> Well cluster 510 is bhtwren the TCE plume and AG-12. Well number 51U is <br /> clean. Although continued use of AG02 could accelerate the northwest <br /> migration of the plume, the two-hour pump test proposed by BMG2 should have <br /> little or no impact on plume migration. The high rate of pumpdge proposed, <br /> 2,500 gallons per minute, is not d problem provided the pump test duration <br /> remains low. It is possible that AG-12 will not produce 2 ,500 gallons per <br /> minute. BMG2 might then propose to use AG-5 or AG-9. Both these wells are <br /> very close to TCE plumes and should not be used. Sharpe Army Depot will not <br /> oppose the BM62 proposal . However, Sharpe Army Depot should mak•'. it clear <br /> that use of AG-5 or AG-9 could cause serious problems and must he closed. <br /> This proposal has been discussed with the technical staff at U.S. Army <br /> toxic and Hazardous Materials Agency. <br /> 1f you have any questions , please contact me at. (209) 982-2091 . <br /> Sincerely, <br /> Abet W. Haines , P.E. <br /> Environmental Program ttdnagLr• <br />