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PUBLICNEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer ' <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 Stockton, CA 95201-0388 <br /> 2091468-3420 <br /> W T JORDAN MAILED APR 11 199 <br /> JORDAN REALTY <br /> 1101 HOLLY DR <br /> TRACY CA 95376 <br /> RE: 298 West Grant Line Road SITE CODE: 2011 <br /> Tracy, CA 95376 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHSIEHD) has reviewed <br /> the March 1996 Quarterly Report prepared by Advanced GeoEnvironmental, Inc. (AGE) for the above <br /> referenced site. <br /> The report summarizes data collected during the January 24, 1996 geoprobe investigation. The data <br /> indicates the presence of a groundwater plume which is migrating off site in a downgradient direction. <br /> In the report AGE recommends the installation of three additional monitoring wells. PHSIEHD <br /> recommends that one monitoring well be positioned between P6 and P5 on the north side of Grantline <br /> Road. The second monitoring well should be located downgradient of P3. The third well should be <br /> designed for free product removal at the northwest property boundary. <br /> PHSIEHD recommends that MW-3 be re-developed during the next quarterly sampling. If the re- <br /> development and sampling produces results which are consistent with data observed in P6 and P5 <br /> then analytical sampling of this well will be considered representative of the aquifer. If the well <br /> continues to produce low to non detections of contaminants, then the well will no longer be considered <br /> useful for quarterly analysis. The well may still provide groundwater elevation data. <br /> In order to remain in compliance with the Corrective Action Requirements of Article 11 of the California <br /> Code of Regulations, PHSIEHD requires that the installation of the three additional monitoring wells be <br /> completed by May 24, 1996. <br /> For additional information, please contact Steven Sasson at (209) 468-3459. <br /> Donna Heran, REHS, Director <br /> :St <br /> nvir nmental Health Division <br /> s64 <br /> ven Sasson, Senior REHS Margare Lagorio, REHS <br /> Site Mitigation unit Lead Senior <br /> cc: Elizabeth Thayer - CVRWQCB <br /> cc: Annabel Mackey - SWRCB <br /> cc: Bill Little - Advanced GeoEnvironmental, Inc. <br /> A Division of San Joaquin County Health Care Sen-ices <br />