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r to <br /> PUBLIC HEALTH SERVICES <br /> SAN f OAQUIN COUNTY 2 ° <br /> ENVIRONMENTAL HEALTH DIVISION Q r <br /> Karen Furst, M D , M PH , Health Officer <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 <br /> 209/468-34.20 <br /> ED RALSTON DEC 0 4 2003 <br /> TOSCO MARKETING COMPANY <br /> 1380 LEAD HILL ROAD,SUITE 120 <br /> ROSEVILLE,CA 96661 <br /> RE- Tosco 76 Faelltty#5896 Site Code It 76 <br /> 2701 West March lane <br /> Stockton CA 95219 <br /> San Joaquin County Environmental Health Services F-m iron mental Health D1V1SLOn(PHSiEHD)has <br /> reviewed your letter dated November 21, 2000 PHS/EHD approves of your plan to recommence weekly <br /> purging as an interim remediation measure However a modification of the sampling requirements is <br /> included in this letter <br /> To assist in the calculation of mass removal, collect a groundwater sample from the lis I ca).ity well art(1 <br /> MW 3 immediately prior to purging, following purging and from the vacuum tnick for a total of three <br /> ~ample- Collect the three samples and submit them for laboratory analysts as described in your letter DO <br /> this every week for a period of three Aeeks After analytical results have been recened for three sequential <br /> • events PHS`EHD will evaluate the data to determine if meaningful trends can be derived from the data <br /> I he determination to cease or continue sampling will he made at that time <br /> If you have any questions regarding this directive, call Dot Lofstrom at(209)468-3436 <br /> Donna Heran Director <br /> Environmental Health Division <br /> Dot Lofstrom <br /> Unit IV Registered Geologist <br /> cc Marty Hartzel,CVRWQCB <br /> Glenn Matteucci Environmental Resolutions, Inc <br /> A Division of San loacjiiin (.aunty Ile-ilth Care senicL% <br />