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111 , <br /> a URS r <br /> E cc," S ^ <br /> • `ER <br /> l_NV1R0I,A,'IENT HEALTH <br /> January 16, 2006 <br /> PEnVI T SER ICES <br /> Mr Paul Supple 06020 <br /> Atlantic Richfield Company 06 a2 <br /> P O Box 6549 <br /> Moraga, California 94570 <br /> Re: Quarterly Groundwater Monitoring Report <br /> First Quarter 2006,for ARCO Service Station No.6020 <br /> Located at 1711 East Yosemite Avenue,Manteca, California <br /> Dear Mr Supple <br /> URS Corporation Americas (URS) is submitting the attached report, which presents the results of the <br /> first quarter 2006 groundwater monitoring and sampling event at Atlantic Richfield Company (ARCO— <br /> a BP affiliated company) Service Station No 6020, located at 1711 East Yosenute Avenue, Manteca, <br /> California <br /> As requested by San Joaquin County, a full 8260B list was requested for each sample. This <br /> • included the lead scavengers, 1,2-DCA and EDB. The only compound detected was MtBE in well <br /> MW-13D at a concentration of 0.7 gg/L. <br /> If you have any questions regarding this report, please call Mr Vernon Elarth at (916) 679-2299 <br /> Sincerely, <br /> URS Corporation Americas \S��RED GE-o <br /> C� N PAU/ F� O. <br /> No 7 20 <br /> Exp Q <br /> zrie Redmond Vernon Elarth, R G <br /> QMR Coordinator Project Manager OF CW-W <br /> Attachment Quarterly Groundwater Monitoring Report, First Quarter 2006 <br /> cc Mr James Barton, Regional Water Quality Control Board, Central Valley Region <br /> Mr Mike Infurna, San Joaquin County Environmental Health Department <br /> Project File <br /> • URS Corporation <br /> Crown Corporate Center <br /> 2870 Gateway Oaks Drive Suite 150 <br /> Sacramento CA 95833 <br /> Tel 916 679 2000 <br /> Fax 916 679 2900 K lWpro e,,V5 SP ARM0602MQ.a -])V0061]QTR 061602000VER 1Q06 do, <br />