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l _ <br /> PUBLIC U, <br /> 1 <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer •. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95 a <br /> 209/468-3420 I( t E <br /> KENNETH EARNEST APR 21 1997 <br /> ULTRAMAR INC <br /> P O BOX 466 <br /> HANFORD CA 93232-0466 <br /> RE: Beacon Station #695 SITE CODE: 1841 <br /> 900 S. Cherokee Lane <br /> Lodi, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed your letters dated January 30, 1997 and Manch 4, <br /> 1997 and the "First Quarter 1997 Ground Water Monitoring Report" dated <br /> February 28, 1997, prepared by EI Dorado Environmental, Inc. for the above <br /> referenced site. In addition, PHS/EHD has discussed the site with Central Valley <br /> Regional Water Quality Control Board staff. <br /> Groundwater levels are rising so groundwater samples should be obtained from <br /> the monitoring wells in May 1997 and the samples should be analyzed for the <br /> same constituents that were analyzed for in February 1997. There is still <br /> confusion about two monitoring wells originally being designated as MW25 and <br /> that a boring log for MW27 does not exist. It should be clarified if one of the <br /> monitoring wells designated as MW25 originally was changed in designation to <br /> MW27. Also a mass balance calculation for TPH-diesel initially released and <br /> the amount remaining in place at the site should be provided. <br /> After the above information is submitted, an evaluation will be made as to <br /> whether any further action is required for this site. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Site Mitigation Unit <br /> c: CVRWQCB - Beth Thayer <br /> A Division of San Joaquin County Health Care Services <br />