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CrNSPENC. <br /> 6 June 2005 7005 JUN "7 0 9i 4�+° <br /> SAN QUIN COUNTY <br /> Mr. Michael J. Infurna, Jr. ENVIRO_NHEP@T-AL' <br /> Senior RENS;LOP/Site Mitigation Unit IV HEALTH ©EPATt1EN <br /> San Joaquin County Public Health Services <br /> Environi-nental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Subject: Preliminary Assessment/Site Investigation Update Report <br /> Stockton California Anny National Guard Complex <br /> 8010 Airport Way and 2000 Stimson Road, Stockton, California <br /> GSA Contract No. GS-1OF-0185) <br /> i <br /> Dear Mr. Infurna: <br /> Versar, Inc. (Versar) is pleased to present a copy of the Preliminary Assessment/Site <br /> Investigation (PA/SI) Update Report for the subject California Army National Guard (CARNE) <br /> facility (Site). The PA/S1 Update Report presents the findings of our field investigation <br /> perforined during February 2004. <br /> Based on the findings of the investigation a removal action is now funded and under <br /> development for the CSMS paveiinerit upwelling areas-and a:suspect CS burial Site. The removal <br /> action is expected to lead to closure of these two Sites...Additionally, further investigation will <br /> likely be required at .the OMS fortner vehicle fueling station. No further investigation is <br /> recommended for the two AASF- .areas .of concern (the groundwater beneath the former <br /> underground storage tank area-and—the minor fuel release); four CSMS areas of concern (the <br /> vehicle wash rack, former hazardous materials storage shed, sandblasting area; and the north <br /> boundary drainage ditch), and one-OMS area-of concern(the vehiele«gash rack). <br /> If you have any .questions or comments on the Site Investigation Report, please contact me at <br /> (916) 863-9323 and at berger(a),versar.com. <br /> Respectfully submitted, <br /> I <br /> Tim Berger, R.G., H.G. <br /> Program Manager <br /> Versar— Southwest Region <br /> Cc: MAJ Kenneth Koop, HQ CA ARNG (w/o attachment) <br /> • SACRAMENTO AREA OFFICE • <br /> 7844 MADISON AVENUE,SUITE 167 • FAIR OAKS, CA 95628•TELEPHONE(916)962-1612 FAX(916)962-2678 <br />