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ENVIR( MENTAL HEALTH EALTDEPARTMENT <br /> lN SAN JOAQUIN COUNTY <br /> Q :?� Donna K.Heran,R.E.H.S. Unit Supervisors <br /> Director 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Mike Huggins,R.E.H.S.,R.D.I. <br /> Douglas W.Wilson,R.E.H.S. <br /> Program Manage'' <br /> Telephone: 209 468-3420 <br /> Laurie A.Cotulla,R.E.H.S. p ( ) Margaret Lagorio,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Mark Barcellos,R.E.H.S. <br /> JIM PARKINSON 'JUL 0 5 2005 <br /> PARKINSON' S ARCO <br /> 3250 W HAMMER LANE <br /> STOCKTON CA 95209 <br /> RE: Parkinson's ARCO SITE CODE 2224 <br /> 3250 W Hammer Lane RO: 709 <br /> Stockton, CA 95209 <br /> On July 1, 2005, San Joaquin County Environmental Health Department (EHD) received <br /> correspondence from. Shaw Environmental, Inc. (Shaw)„requesting contaminant mass <br /> estimates for sorbed gasoline, benzene, and methyl tertiary-butyl ether (MTBE) be <br /> submitted to EHD after Shaw has completed installation of an additional monitoring well <br /> near cone penetrometer test boring CPT-3. Data generated during the well installation <br /> will be included in the mass calculations. Originally EHD had requested contaminant <br /> mass estimates be submitted by September 14, 2005. EHD concurs with Shaw's <br /> recommendation and requests that the contaminant mass estimates be included in the <br /> report for the new monitoring well. <br /> If you have any questions, please contact Vicki McCartney at(209) 468-3456 or by email <br /> at vmccartney@sjcehd.com. <br /> Donna Heran, RENS, Director <br /> Environmental Health,Department <br /> Victoria L. McCartney, Senior RE HS Nuel C.Henderson,Jr.,PG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> c: Dan Wynne, PG- Shaw <br /> James L.L. Barton, PG- CVRWQCB <br />