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o{r, s of .� <br /> PUBLIC HEALTH SERVICES oPa�iN <br /> SAN JOAQUIN COUNTY 2' o <br /> ENVIRONMENTAL HEALTH DIVISION 0 , <br /> ' Karen Furst, M D., M P.H, Health Officer <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 <br /> ' 2091468-3420 <br /> ED RALSTON DEC 0 4 ZOO <br /> ' TOSCO MARKETING COMPANY <br /> 1380 LEAD HILL ROAD,SUITE 1.20 <br /> ROSEVYLLE,CA %661 <br /> ' RE Tosco 76 Facility c tty#58$5 Site Code 1176 <br /> 2701 'West March lane <br /> Stockton CA 95219 <br /> San Joaquin County Environmental Health Services,Emironniental Health Division(PHS/EHD)has <br /> ' reviewed your letter dated November 21, 2000 PHS/EHD approves of your plan to recommence weekly <br /> purging as an intenm 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 UST cavity well and <br /> MW 3 immediately prior to purging, following purging and from the vacuum thick for a total of three <br /> samples Collect the three samples and submit them for laboratory analysis as described in your letter Do <br /> this every week for a penod of three weeks After analytical results have been received for three sequential <br /> events,PHSIEHD will evaluate the data to determine if meaningful trends can be derived from the data <br /> The determination to cease or continue sampling will be shade 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 /> ce Marty Hartzel,CVRWQCB <br /> Glenn Matteucci Environmental Resolutions, Inc <br /> A Divnion at San Joaquin Couniv Health Care Sen ice, <br />