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PUBLI^iEALTH SERVICES <br /> SAN JOAQUIN COUNTY r. Z <br /> ENVIRONMENTAL HEALTH DIVISION < <br /> Karen Furst, M.D., M.P.H., Health Officer � . <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 �iFaRN <br /> 209/468-3420 C FlyPETER NIEMIEC <br /> ASSISTANT COUNSEL MAY 2 2 1998 <br /> UNOCAL CORPORATION <br /> DIVERSIFIED BUSINESS GROUP <br /> 376 VALENCIA AVENUE <br /> BREA CA 92823 <br /> RE: 437 E. Miner Street SITE CODE: 1181 <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has reviewed <br /> the"First Quarter 1998 Groundwater Monitoring & Sampling Report"dated March 26, 1998, prepared <br /> by Gettler-Ryan Inc. for the above referenced site. <br /> The following items were not included in the report: <br /> Field data sheets from February 13, 1998 for monitoring wells U5, U7 and U8. <br /> Laboratory data sheets for samples collected February 13, 1998 from monitoring wells U4 and U8. <br /> Laboratory data sheets for samples collected March 9, 1998 from monitoring wells U3, U4, U5, U6, <br /> U7 and U8 and analyzed for nitrogen and other chemicals. <br /> Laboratory data sheets for samples collected March 9, 1998 from monitoring wells U3 and U4 and <br /> analyzed for BTEX. <br /> Laboratory data sheets for samples collected March 9, 1998 from monitoring wells U4 and U8 and <br /> analyzed for oxygenates using EPA method 8260. <br /> Laboratory quality control data report for EPA method 8260 for March 12, 1998. <br /> Please submit this data immediately to support the data in the quarterly report. <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- Pat Anderson <br /> Gettler-Ryan Inc <br /> UNOCAL-Robert Boust <br /> A Division of San Joaquin County Healrh Care Services <br />