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SEAICO <br /> ENVIRONMENTAL & GENERAL ENGINEERING CONTRACTOR <br /> LICENSE # 449864 A,B, C61/D40,HAZARDOUS CERTIFICATION <br /> 1227 So 7th STREET, MOLDESTO, CALIFORNIA 95351 (209) 524-9653 <br /> (209)524-9653, FAX# (209)524-0503 <br /> September 6, 1995 <br /> Jim Podesta <br /> Deputy Director of Public Works <br /> Engineering Services <br /> City of Manteca <br /> 1001 W Center Street <br /> Manteca, CA 95337 <br /> Re 15615 South Seventh Street Lathrop, California <br /> Subject Industrial Waste Water Discharge <br /> Dear Jim, <br /> As you are aware Semco is performing remedial excavation activities at the above referenced <br /> facility Semco has obtained a permit from your department to discharge stored, treated <br /> ground water from above ground storage tanks to sanitary sewer on a tank by tank basis Due <br /> to the analytical results obtained by our filtering method Semco 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 can be performed as required by your department <br /> Due to the volume of available storage space, and 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 Manteca guidelines is a top <br /> priority as is the safety/liability issues associated with an open excavation Please let me <br /> know if there is anything we can do to safely expedite the discharge of the water from this <br /> project If you have any questions or need further information please contact me at (209) <br /> 524-9653 <br /> Sincerely, <br />! <br /> I <br /> oug Flaming <br /> Operations Manager <br /> I <br />