Laserfiche WebLink
WESTERN 1386 FAST BFAMER STREET <br /> WOODLAND CA95776-6003 <br /> - WHO GEO-ENGINEERS (530) 668-5300, <br /> CALIF CONTRACTOR#513857 FAX(530)662-0273 <br /> REGISTERED GEOLOGISTS Wege a@mother corn <br /> Mr Larry Williams April 29, 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 ##31 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 #31 concerning the above wastewater discharge permit As <br /> you requested the sampled discharge was also analyzed for Methyl tertiary Butyl Ether (MTBE) <br /> using EPA method 602 The result showed a minor amount of MTBE, slightly above the <br /> laboratory lower detection limits of 0 005 mg/L, at 0 008 mg/L <br /> SPILL PREVENTION PLAN <br /> As required by the Wastewater Discharge Permit for this site, a spill prevention plan has been <br /> prepared <br /> Tine waste stieam is treated groundwater condensate produced from the vapor extraction of monitor <br /> wells MW I, 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 /> concuirently destroying vapor being pulied from the soil LTT has, for the time being, stopped <br /> (August 1993) purging monitor wells MW1, MW2, MW3, MW8 and MW10 We are still placing <br /> the condensate water produced from the vapor extraction system into the "ConVault" for vacuum <br /> stripping treatment <br /> 1 R-603 W W#31 4/29/98 <br />