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Mr Larry Williams October 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 436 for Wickland Properties site R603, located at <br /> 6425 Pacific Avenue, Stockton, California <br /> Dear Mr Williams <br /> This letter is the Update Status Report #35 concerning the above wastewater discharge permit No <br /> discharge occurred during the month of August 1998 <br /> SPILL PREVENTION PLAN <br /> As required 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 MW1, MW2, MW3, and MW10, 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 with activated carbon adsorption The carbon is also <br /> concurrently destroying vapor being pulled from the soil LTT has, for the time being, stopped <br /> (August 1993) purging monitor wells MWI, MW2, MW3, MW8 and MW10 We are still placing <br /> the rnnrian4zatp xuater nrodured from the vannr extrartinn sv;tem into the "ConVault" for vacuum <br /> stripping treatment <br /> ! R-603 WW#36 10/06/98 - <br />