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' WESTERN 13861 AS I BLAMf_Riti IREI I <br /> GEO-ENGINEERS WOOM AND CA 95776-6003 <br /> CALL CONIRAC I OR 9513857 r� ,- (530) 668-530 3 <br /> F ISA'(�3�)662 ()273 <br /> ftf CiIS31 fZ1 13[,1-[fit OCrIti 1 «tgt.��giothur coin <br /> Mr Larry Williams January 12, 1999 <br /> Senior Environmental Control Officer <br /> City of Stockton <br /> Dept of Municipal Utilities <br /> 2500 Navy Di ive <br /> Stockton, CA 95206 <br /> (209) 944-8722 <br /> RE Wastewater Discharge Permit UPDATE #39 for Wickland Properties site R603, located at <br /> 6425 Pacific, Avenue, Stockton, California <br /> Dew Mr Williams <br /> This letter is the Update Status Report#39 concerning the above wastewater discharge permit <br /> SPILL PREVENTION PLAN <br /> • As iequiied by the Wastewater Discharge Permit foi this site,te, a spill prevention plan has been <br /> prepared <br /> The waste sticam is treated groundwater condensate produced from the vapoi extraction of mottitot <br /> wells MW l, MW2, MW3, and MWIO, and the purged water produced during the quarterly ground <br /> water sampling of all the wells associated with this site <br /> Lawrence I ank Testing's (LTT) vacuum pump service rises their vacuum pump to pull the water <br /> from MW8 and MW12, through dedicated one inch Sell 40 PVC pipes, into a 100 gallon stainless <br /> steel tank <br /> This watet i5 then transferred to the "ConVault" for tieatment by "tank aeration", with the vapor <br /> destruction accomplished using air stripping LTT has stopped (August 1993) purging monitor <br /> wells MW I, MW2, MW3 and MW10 We are still placing the condensate water produced from the <br /> vapor extraction system into the "ConVault" for vacuum stripping ticatnicnt <br /> 1 R-603 W W#39 1/12/1999 <br />