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WESTERN 1380 I~As r t3EAMER S1 Rt:'I <br /> GEO-ENGINEERS Jrz IV/ WOODLAND CA 95770-0003+ '+ (530) 668-5300, <br /> CALIF CONI RAC I OIt#513857 1 AX(530)662-0273 <br /> REGIS1 LR-1)GEOi OGIS7 S w1_6e(n 1110thLr Lam <br /> M1 Lairy Williams Octobei 8, 1999 <br /> Senior Environmental Contiol Officei <br /> City of StOLktoll <br /> Dept of Municipal Utilities <br /> 2500 Navy Iii ive <br /> Stockton, CA 95206 <br /> (209) 944-8722 <br /> RL Wastc,watcr Dlschaige Peinut UPDATE 1148 fol WiLkland Piopelties site R603, located at <br /> 6425 13ULLIIL AVenLiC, Stockton, California <br /> Deal Mi Williams <br /> This Icttel is the Update Status Repoit 1148 concerning the above wastewatci dischalgc permit <br /> SPILL PRLVLNTION PLAN <br /> As reguiied by the Wastewater Discharge Pcimit foi this site, a spill pievention plan has been <br /> piepaicd <br /> Tile waste stieam is Healed gioundwalei condensate ploduccd fiolll the vapoi extiaction of monitoi <br /> wells MW 1, M W2, MW3, and M W 10, and the purfcd water pioduccd dui Ing the quai tel ly gi ound <br /> watei sampling ofall the wells associated with this site <br /> Lawrence "Manic Testing's (L'FT) vacuum pump service uses their vacuum pump to pull the water <br /> fionl MW8 and MW12, through dedicated one inch Sch 40 PVC pipes, Into a 100 gallon StaiilicsS <br /> steel tans. <br /> This watei iti then transfeired to the "ConVault" fol treatment by "tank aciation", with the vapor <br /> destiuction accomplished using an stripping LTT has stoppcd (August 1993) purging inonilol <br /> wells M W 1, MW2, MW3 and M W 10 The vapor extiaction system has been temporarily turned <br /> off awaiting the San Joaquin County I lealth decision far no furlllei ac lion at this site Condensate <br /> water produced from the vapor extiaction system is placed into the "ConVault" fol vacuum <br /> sll 1ppnlg tI L,10llcllt <br /> The "ConVault" tank is a double contained steel tank shiouded in condyle Hie treatment of the <br /> groundwatei occurs in batches After tteatment the water is then dumped lions the tteatnlent tank, <br /> Via the c.erlti ilLibal pump, through a totahzei water metei The watei is ticn passed thiough a <br /> cllalnbei containing an LEL meter relay calibrated to shut off tllc system if vapois from the effluent <br /> cvcl leach the 10% LEL level The clean ticated watci is dischaiged to the thice-inch sewer clean <br /> 1 R-603 W W1148 9/13/99 <br /> 1 <br /> { <br />