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PUBLC HEALTH SER!ICES <br /> SAN JOAQUIN COUNTY s� <br /> a: < <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer ., <br /> 4c <br /> P.O. Box 2009 0 (1601 East Hazelton Avenue) 9 Stockton, California 95201 pilot <br /> (209) 468-3400 <br /> CHUCK CARMEL <br /> AR Copy <br /> APR 2 4 1992 <br /> ARCO PRODUCTS COMPANY <br /> P 0 BOX 5811 <br /> SAN MATEO CA 94402 <br /> RE: ARCO Station #6100 ti SITE CODE: 1708 <br /> 25775 Patterson Pass <br /> Tracy, CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division has reviewed the "Status of <br /> Environmental Investigation and Addendum To Work Plan" dated March 20, 1992, prepared by RESNA. <br /> Depth to first groundwater for this site has not been confirmed. We know that it is greater than one <br /> hundred feet below ground surface but in order to properly evaluate the need for further vertical <br /> assessment the actual depth to ground water measurement is required. If there is a well log for the <br /> existing well at this site please provide a copy of it to PHS/EHD. Also, the depth to first groundwater <br /> should be measured in the existing well. Please notify PHS/EHD, prior to the water level measurement. <br /> Soil samples were collected from borings twelve and thirteen on November 20, 1991 and analyzed by the <br /> laboratory on December 5.6, 1991. This is longer than the maximum holding time of fourteen days <br /> shown in the LUFT manual. In the future please ensure analysis of samples within the acceptable <br /> holding time. <br /> The further work proposed may proceed once the permits have been obtained. If the borings south of <br /> the dispenser islands are in the San Joaquin County right-of-way an encroachment permit must be <br /> secured from San Joaquin County Public Works Department and a separate permit application and <br /> $89.00 fee must be submitted to PHS/EHD for those borings. <br /> If you have any questions contact Margaret Lagorio, Senior REHS, at (209) 468-3449. <br /> Jogi Khanna M.P.H. <br /> Health O ce <br /> rie A Cotulla, REHj/S/PWManager <br /> rogram <br /> nvironmental Health Division <br /> LAC/ML:Ib <br /> c: Applied Geosystems, Inc. (RESNA) <br /> 3164 Gold Camp Dr., Ste 200 <br /> Rancho Cordova, CA 95670 <br /> A Division of San Joaquin County H"Lh Fare Semces �� <br />