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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY o <br /> ENVIRONMEN i'AL HEALTH DIVISION W ` <br /> • <br /> Ernest M. Fujimoto, Vi.D , MPH., Acting Health Officer <br /> 445 N San Joaquin Street • P O Box 388 * Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> STEVE MANILDI <br /> SEBASITAIVI VINEYARDS <br /> 4614 W TURNER ROAD <br /> LODI CA 95258 'M'UV Q 4 1994 <br /> RE Sebastiani Vineyards <br /> SITE CODE 1383 <br /> 4614 W Turner Rd , Lodi <br /> I <br /> San Joaquin County Public Health Services EnvironinentaI Health Division(PHS/EHD) has reviewed the <br /> Third Quarter Monitoring Report submitted by Sebastiam Vineyards dated October 10, 1994 for the <br /> above referenced site <br /> The report states that water samples from MW-1 and MW-3 were analyzed for Benzene, Toluene, Ethyl <br /> benzene, Xylenes and Total Petroleum Hydrocarbons as gasoline MW-1 has levels of Benzene, Ethyl <br /> Benzene and Xylene which are slightly more than ten times the method detection!units MW-3 has levels <br /> of TPH-g which are slightly more than twice the method detection Imuts <br /> . Depth to water measurements were taken from MW-1, MW-3 and MW-5 Based on those measurements <br /> gradient has been calculated to be 63 degrees ENE with a hydraulic gradient of - 01.4 vertical feet for <br /> every horizontal foot <br /> An engineered report shall be submitted to PHS/EHD to address either the feasibility of removing the <br /> existing residual contamination using vapor extraction or air sparging, or the risk of leaving the existing <br /> residual contamination in place The feasibility study/risk assessment may be submitted with the next <br /> quarterly monitoring report <br /> Please call Steven Sasson at (209) 468-3459 for more information or if you have any questions regarding <br /> the next scope of work <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Steven Sasso n, Senio <br /> Diane M Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> SS <br /> cc Elizabeth Thayer, CVRWQCB UST Section <br /> Pt%Linn ol "1tt fn ulutn 1 1111111% 11t 11111 f nt tiU%It t <br />