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WESTERN 138�i1-AS I BLAMI R 5110-1 f <br /> f Wf7bD1 AND CA 95776-6003 <br /> . WH'G '+ GEO-ENG 1NEERS - (530) 668-5300 <br /> CALL CONTRAC 1071#513857 I AX(5 30)662-0273 <br /> 10f GIS 1 LfOrD(-jEoL06N 1 5 13 P;', 121- 44 %Nt gCk ntnt7iLr nom <br /> Mr Larry Williams September 13, 1999 <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 #47 for Wu.kland Properties site R603, located at <br /> 6425 Pacific. Avenue, Stockton, California <br /> Dcar Mr Williams <br /> This letter is the Update Status Report 1147 concerning the above wastewater discharge permit <br /> SPILL PRLVENTION PLAN <br />• As required by the Wastewater Discharge Permit for this site, a spill prevention plan has been <br /> prepared <br /> The waste sit cam is treated groundwater condensate produced from the vapor extraction of monitor <br /> wells MW1, MW2, MW3, and MW10, and the purged water produced during; the quarterly ground <br /> water sampliiig of all the wells associated with this site <br /> Lawrence I ank Testing's (LTT) vacuum pump service uses their vacuum pump to pull (lie water <br /> fiom MW8 .incl MW12, through dedicated one inch Sch 40 PVC pipes, into a 100 gallon stainless <br /> 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 and MW10 The vapor extraction system has been temporarily turned <br /> off awaiting the San Joaquin County Health decision for no fuitlier action at this site Condensate <br /> water produced fjom the vapor extraction system is placed into the "ConVault" for vacuum <br /> stripping treatment <br /> R-603 WW1147 9/13/99 <br />