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' 09-06-1995 05-22Pt'1 FRN1 SEMO TO 2393495 P.02 <br /> SEMCO <br /> Ela�rA�. & GUMAjU tFNGiNE#'Uh1G CDN-Y'RACTOIt <br /> LICLN SE it+449864 A,N.C6111040,HAZARDOUS CRATMCAITON <br /> 1217 So.7th STREET,MODESM, CAE"AN1A 95351 (219} 524-9693 <br /> (209).424-9653,FAX# (209)52"5(r <br />' September b, 1995 <br /> pgsl-It-brand tags tranamrttW memo'7671 •4t w n"' <br /> re..t X111 <br /> Jim Podesta <br /> Deputy Director of Public Works ' <br /> Engliieering ServiLes <br /> City of Manteca <br /> 1001 W. Canter Street <br /> Manuca, CA 9533r <br /> Re 15615 South Seventh Street, Lathrop, California <br /> Subject_ Industrial Waste Water Discharge <br /> Dear Jim, <br /> As you are aware 5emoo is perturming remedial excavation actifives at tete above referenced <br /> facility Semco has obtained a permit from your department to discharge stored, treated <br /> ground water from above gmund storage tanks to sanitary sewer on a tank by tank basis. Due <br /> to the analytical resents obtained by our filtering method Semeo proposes to begin a <br /> continuous discharge from the carbon canister filter system at an approximate rate of 20-25 <br /> gallons per minute Periodic sampling =be performed as required by your dupsirtment. <br /> Due to flit volume of availabic storage space, W accumulated ground water in the excavation <br /> we cannot continue with work at the project to close the. excavation until all currently stored <br /> water is processed and discharged Compliance with City of Mantcca guidelines is a top <br /> priority as is the safety/liability issues associated w)th an Wn excavation Please let me <br /> know if there is anything we can do W safely txpedae the discharge of the water from this <br /> project if you have wiy questions or need further information please carr*.aet int at (209) <br /> $249653 <br /> Sincerely, <br /> r <br /> I <br /> 4ougzFl ting <br /> Operations Manager <br /> 09--07-1955 04 54PM 209 239 8495 P 01 <br /> I <br />