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GROUND WATER SAMPLING <br /> GOI LD{VINERIES AND DISTILLERIES <br /> LODI,CALIFORNIA <br /> April 31 1990 <br /> File No,2¢-230060-A00 - <br /> -. INTannUCflO� - k . . <br /> Tba Guild SVinertes and Distilleries facility is lock l at 1 Wiaemaster Way in Lodi <br /> .1 (Plate 1). An onsite SIA}-gallon fuel storage tank was exwvmed in 19115,and initial soil <br /> sampling results indicaled lire presznce of petroleum hydrenrhnn constituents in the soil <br /> around_the lank excavation. Klernfelder ryas contracted by Guild Winery to assess the <br /> presence oCF."rde.m.hydcoemboa constitueats in sail and ground water at the site. <br /> Sixteen soil hmiags were dill.d and sampled and eight monhodngwells were installed and <br /> Ksampled during the investigation. Subsequently a Vapor Extraction System(VESA;was p <br /> } K _ installed and opdr ted for approximately 15 months from%larch 1987 to June 19,99 After. t - - <br /> / ,' em ss f oro the VES ji fished,Guild Winery contracted again%1[h KI t f 2d r to <br /> t f reassess the and t the sJ_e Ground water was being monitored on a quarusrly basis. A <br /> 3 —my of rcpcuisincluding quarterly ground water mmutanng are attached. r3 <br /> _ The Final Site Remediation soil investigation indicated that petroleum hydrocarbon <br /> donstttuenis had been reduced significantly In .ne soil,and.ground watermonitoring l <br /> showed plat petroleum hydrecnrben constiruenls had also decreased. Results of the <br /> quarterly ground water monitoring presented to the Final Site Remediulion report doled <br /> August 9,1988.1n the last two rounds Of ground warer sampl ng,February and May 1986, <br /> petroleum hydrocarbon constituents were not detected in the wells wish the excep[lon of - fi <br /> -& 3u [udausie inMW-1 in Februa- rid 13u Ithluenein MW-2 inhla The detection <br /> (( �.. BI t rya 8/ Y- f{ <br /> h litnt was I ugJl.Totalp�mleum hydrocarbons(TPH)were detected from 26 to I�3 mgJl y <br /> a ' in wells I cried hydraulically upgradient,downgrxdient and Initially @om the former tails q <br /> sit to Fehmary and May 1966. The origin of the hydrocarboa'is unknown but may be <br /> .. - npgmdient ofthe site to the north. <br /> { Bowd on the apparent rcduclion of petroleum hydrocarbon coastuuents in the soil and f <br /> f - ground water Kleinfelder recommended that Guild Winery apply to disetande the VES <br /> and abandon the eight monitoring wells. [n March 1990,San Joaqu[n'county requested - <br /> ,,. that Guild Winery collect another round ofground watersample;.Guild Winery contacted + <br /> I F540-129 1 <br /> NMI IWMMMM <br />