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j <br /> WESTERN 1386]-AS 1131-AMI R S I RLI I <br /> WHO GEO-ENGINEERS WOOD 1(53AND CA 95776-6003 <br /> CALIF MM>,AC IOR#513857 .,� 7 � �� i68_$0273 <br /> RI GIST EItI D C,FO[ OtiIS15 l F- I AX(530)662-0273 <br /> wcge@inother Lom <br /> Mr Larry Williams November 6, 1998 <br /> Senior Environmental Control Officer <br /> City of Stockton <br /> Dept of Municipal Utilities <br /> 2500 Navy Drive <br /> Stockton, CA 95206 <br /> (209) 944-8722 <br /> RE Wastewater Discharge Permit UPDATE #37 for Wickland Properties site 8603, Iocated at <br /> 6425 Pacific Avenue, Stockton, California <br /> Dear Mr Williams <br /> I <br /> This lcttei i,. the Update Status Report #37 concerning the above wastewater discharge permit No <br /> discharge oc,c,urred during the month of October 1998 <br /> SPILL PRI-VLNTION PLAN <br /> As iequiicd by the Wastewater Discharge Permit for this site, a spill prevention plan has been <br /> prepared <br /> The waste stream is treated groundwater condensate produced from the vapor extraction of monitor <br /> wells MW 1, M W2, MW3, and MW 10, and the purged water produced during the quarterly ground <br /> water sampling of all the wells associated with this site <br /> Lawrence Tank Testing's (LTT) vacuum pump service uses their vacuum pump to pull the water <br /> from the wells, through dedicated one inch Sch 40 PVC pipe, into a 100 gallon stainless steel tank <br /> This water is then transferred to the "ConVault" for treatment by "tank aeration", with the vapor <br /> destruction accomplished using air stripping LTT has stopped (August 1993) purging monitor <br /> wells MWI, MW2, MW3, MWS and MW10 We are still placing the condensate water produced <br /> fiom the valor extraction system into the "ConVault" for vacuum stripping treatment <br /> 1 R-603 W W#37 11/06/98 <br />