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PUBLt HEALTH SERVICES <br /> SAN JOAQUIN COCNTY F, <br /> JOGI KHANNA QLD.KP H <br /> N' < <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton, California 95201 qcf Fuad <br /> (209) 468-3400 <br /> JUL 2 6 1991 <br /> RICK SISK <br /> UNOCAL CORPORATION <br /> P 0 BOX 5155 <br /> SAN RAMON CA 94583 <br /> RE: Unocal Station #6981 IN REPLY REFER TO SITE CODE: 1217123 <br /> 4707 Pacific Ave. <br /> Stockton, CA <br /> Public Health Services, Environmental Health Division, (PHS/EHD) <br /> has reviewed the May 3 , 1991, Status of Environmental Investigation <br /> Submittal prepared by Applied Geosystems/Resna Industries, and has <br /> the following comments: <br /> 1. The last four quarterly reports have not provided any <br /> useful information. It seems unlikely that the water <br /> levels will rise in the existing wells any time in the <br /> near future, and deeper wells need to be installed. <br /> 2 . The existing dry wells can remain so long as there is <br /> potential for future use, (i.e. vapor extraction or in <br /> anticipation of a rise in water levels) they are sealed, <br /> and in good repair. <br /> 3 . PHS/EHD has received the July 11, 1991, correspondence <br /> regarding the scheduling of an attempt to sample July 27, <br /> 1991. PHS/EHD plans to be on-site during this attempt. <br /> If the wells are still unable to be sampled on July 27 , 1991, <br /> please submit a work plan for the installation of additional, <br /> deeper wells by September 15, 1991. <br /> Should you have any questions or concerns, contact Steven <br /> Schneider, REHS, of my staff at (209) 468-3441. <br /> Jogi Khanna, M.D. , M.P.H. <br /> Health <br /> Laurie A. otulla, REHS, rogram Manager <br /> Environmental Health Division <br /> % LAC/SS:nr <br /> c: CVRWQCB - Beth Thayer <br /> c: Applied Geosystems, Inc. /Resna Industries - David Stavarek <br /> 4191-E Power Inn Road, Sacramento, CA 95826 <br /> A Division of Jan Joaquin County Health Care.Services <br />