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ENVIRONMENTAL HEALTH DEPARTMENT <br /> Q"`" SAN JOAQUIN COUNTY <br /> o � -Unit Supervisors <br /> Donna K. eran, . .H.S. Car!Borgman,R.E.H.S. <br /> KHRE <br /> 304 East Weber Avenue, Third Floor <br /> a: Director Mike Huggins,R.E.H.S.,R.D.I. <br /> - AI Olsen,R.E.H.S. Stockton, California 95202-2705 <br /> Douglas W.Wilson,R.E.H.S_ <br /> P • Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Robert McClellon,R.E.H.S. <br /> 4['i Fo' � <br /> Laurie A.Cotulta,R.E.H.S. Fax: (209) 454-0138 <br /> Program Manager Mark Barceilos,R.E.H.S. <br /> I <br /> I <br /> PAUL SUPPLE AUG 16 2Q04 <br /> ATLANTIC RICHFIELD COMPANY <br /> P O BOX 6549 <br /> MORAGA CA 94570 <br /> RE: ARCO AM-PM 95450 <br /> 1617 Fremont Street <br /> Stockton, CA <br /> San Joaquin County Environmental Health Report Second ment and Third Quarter 200D) has 4 prepared by URS <br /> our file and <br /> Quarterly Groundwater Monitoring p <br /> Corporation for the above referenced site. <br /> In January 2004, EHD and URS representatives discussed preparation of a closure/no further <br /> action required report. Minimal soil contamination has been documented at the site and <br /> contaminant levels of MTBE in the groundwater at the site have decreased to below the <br /> • maximum contaminant levels for public drinking water. <br /> In a letter dated April 18, 2002, EHD requested that a well and conduit survey be conducted to <br /> identify potential receptors within 2000 feet of the site. In a"Site Investigation Report"dated <br /> October 4, 2002,prepared by URS Corporation it is stated that no wells were observed on the <br /> ARCO or adjacent properties. This survey is insufficient. Contact the Department of Water <br /> Resources and California Water Service to identify wells within 2000 feet of the site. It appears <br /> California Water Service may have wells across Interstate 5 that are within 2000 feet of this site. <br /> If ARCO can demonstrate that this site does not require further action according to the Central <br /> Valley Regional Water Quality Control Board (CVRWQCB)Tri-Regional Board Staff <br /> Recommendations document, then a closure/no further action required report should be prepared <br /> and submitted to EHD and the CVRWQCB for evaluation. <br /> If you have any questions contact me at(209)468-3449 or Vicki McCartney at(209)468-3456. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Margaret Lagorio, Supervising REHS <br /> Unit IV <br /> c: CVRWQCB—Jim Barton <br /> URS—Vernon Elarth <br />