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TEL No <br /> Dari 7 ; 93 13 18 No .UQ8 P .01 <br /> a tAre biz+rAi,i�oa IA Orotticlibn <br /> Againoy,. Ph 6 WILSON,C�owrnor <br /> CALf� RNIA RE IONAL WATER OUAUTV CONTROL BOARD <br /> CENTRAL VALLEY AMON <br /> 3443 AaWbi MAd,Bulla A J <br /> SAMMOM.CA 9582I.SWO <br /> NHONW (910)zts-3000 COPY <br /> PAX: (gib)ltss atl i s <br /> 7 January 1993 Poet-h-brand Jax transmittal memo 7971 +�orpege:► <br /> .f O real <br /> Q � L�} <br /> 'ax'l -C)a"IRV r <br /> Dept. yllJ fL.t 0he <br /> - -3d-5 ,s <br /> t � o <br /> Mr. Bay Borges .JAN 0 7 1993 <br /> EhYirOhmental Health Division i <br /> publie Health Services San Joaquin County <br /> P. 0. BOX 2009 ENVIRONMENTAL HEALTH <br /> Stockton, CA 95ZO1,, PERMIT/SERVICES <br /> WELL ADANDONMENT, LOUISE AVENUE AND HOWLAND ROAD, SAN JOAQUIN COUNTY <br /> Thank you for the copies Of the well logs for the three wells immediately <br /> north of the Simpplotjptabperty that are proposed to be abandoned. I have <br /> reviewed the analytital data from several Occidental Chemical Corporation <br /> monitor wells and extraction wells that are near these three wells. As we �' Y <br /> discussed ori the phone, it appears that there are low concentrations of DBCP <br /> in the ground Water 'A n this areas and higher concentrations of Sulfolane. lF <br /> Therefore; I recommend that these wells be tipped the entire distance from the <br /> top of the screened interval to the existing cement grout seals before <br /> pressure grouting to limit the potential for chemical migration at these <br /> wells. <br /> Please contact me at; (916) 255-3033 if you have any further questions <br /> regarding this matter. <br /> QBER7~ ADoN <br /> Senior En sneer <br /> CC! Jose Salcedo, California Department of Toxic Substances Control , <br /> Sacramefito <br />