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I� <br /> F AL HEALI <br /> R 'titiCE <br /> 04 MA '1 17 '( PM 24 08 <br /> May 13, 2004 <br /> Mr. Paul Supple 02130 <br /> Atlantic Richfield Company 06.a2 <br /> P.O. Box 6549 <br /> Moraga, California 94570 <br /> Re: Quarterly Groundwater Monitoring Report <br /> First Quarter 2004, for ARCO Service Station No. 02130 <br /> Located at 7906 North El Dorado Street, Stockton, California <br /> Dear Mr. Supple: <br /> URS Corporation Americas (URS) is submitting the attached report, which presents the results of the <br /> first quarter 2004 groundwater monitoring and sampling program at Atlantic Richfield Company <br /> (ARCO — a BP affiliated company) Service Station No. 2130, located at 7906 North El Dorado Street in <br /> Stockton, California. <br /> Please be advised that in our continued effort to remediate the impacted groundwater at the site, URS <br /> has moved the air bubbling device to well VW-10. Well VW-10 is the most impacted well at the site <br /> >� and URS hopes that bubbling air into this well will aid in the natural bio-attenuation of the petroleum in <br /> this area. The bubbling device was moved to well VW-10 on April 8, 2004. <br /> If you have any questions regarding this report, please call Mr. Vernon Elarth at (916) 679-2299. <br /> Sincerely, <br /> URS Corporate n Americas \��ERED Z zo, <br /> PAU( F� 6,iP <br /> 9� a <br /> / tM ;! 7120 /_ <br /> Exp. <br /> , T <br /> Margaret Hogaboom Vernon Elarth, R.G. s�q <br /> Staff Geologist Project Manager SOF CA15 <br /> Attachment: Quarterly Groundwater Monitoring Report, First Quarter 2004 <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 /> ".j <br /> URS Corporation <br /> Crown Corporate Center <br /> 2870 Gatedlay Oaks Drive, Suite 300 <br /> Sacramento, CA 95833 <br /> Tel: 916.679.2000 <br /> Fax: 916.679.2900 K\Wp "a V5BPAKC40BMQUMerlyll QTRNU13000VER IQ04.d <br />