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ENVIROrV MENTAL HEALTh DEPARTMENT <br /> °P SAN JOAQUIN COUNTY <br /> UnrtSupervrsors <br /> Donna K Heran,R.E.H S <br /> Ff Director 304 East Weber Avenue, Third Floor Car' MmeHuggins,l R, H sHR z Al Olsen,R E H S Stockton, California 95202-2708 <br /> r �p Program ManagerDouglas W Wilson,R E H S <br /> ��`FoRN Laurie A Cotulla,R.E H S Telephone (209) 468-3420 Margaret Lagono,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 /> DAVID ATWATER <br />' VAN DE POL ENTERPRISES <br /> P O BOX 1107 <br /> STOCKTON CA 95201 <br /> RE CALIFORNIA FUELS STATION CODE 1214 <br />' 2402 PACIFIC AVENUE <br /> STOCKTON CA 95204 <br />' WORKPLAN Revisions to Work Plan Addendum Apnl 29, 2002 <br /> DATED November 6, 2002 <br /> PREPARED BY Advanced G,eoEnvtronmental Inc (AGE) <br /> APPROVED a with Conditions (See Below) <br /> DISAPPROVED ❑ <br /> lieADDENDUM ❑ Submit by <br />' ADEQUAT E AND NECESSARY ELEMENTS OF 14-E WOR.RPLAN (k-&S <br /> 25299 37,subd.(c)(3).) <br /> 1) Install a ground watez extraction well screened between 40 feet and 65 feet bsg, <br />' mstead of from 38 to 65 feet bsg as previously proposed <br /> 2) Conduct a 48-hour aquifer pumping test.ncludmg a 24-hour step draw-down test <br /> and a 24--hour constant rate pumping test to evaluate the radius of influence for the <br />' proposed groundwater extraction system <br /> COMMENTS AND CONDITIONS <br /> 1} Schedule work with PHS/EI-ID before scheduling work with C-57 contractor <br />' 2) Implement worm by January 15, 2003 <br /> 3) Subt-nnt appropriate fee and well application pertmt <br /> 4) Additional work to address the lateral extent of the groundwater contamination to <br /> the north toward MW-6, east toward the apartment complex, and northwest toward <br /> MW-4 maybe required based on the result ofthe pumping tesr <br /> t REASONS FOR DISAPPROVAL OF THE WORKPLAN (H&S 25299 37, <br /> subd (C)(3).): <br /> None <br /> DATED November 18, 2002 BY Y <br /> . Cc CRWQCB,Central Valley Region—Marty Hartzell <br /> Cc +"AGE ---Tarn Cuellar <br />