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' Corrective Action Plan <br /> Montgomery Ward Auto Service Center, Stockton, CA <br />' PERFORATIONS (feet bgs) <br /> 40 to 70 <br /> 94 to 118 <br />' 184 to 190 <br /> 196 to 202 <br /> 208 to 214 <br /> 220 to 226 <br /> 232 to 238 <br /> 244 to 250 <br /> 256 to 262 <br />' 268 to 274 <br /> 280 to 286 <br /> 292 to 322 <br />' According to the Water Well Drillers Report for the well, "no strata were sealed against <br /> pollution " Information provided by Delta College indicates that the well is typically used <br /> (pumped) only during the months of May through October, and that the usage varies <br />' depending upon the weather The ground water is used to spray irrigate the campus <br /> Ground water monitoring data for the Montgomery Ward Site and the Former Unocal Site <br /> show that pumping of the irrigation well influences the direction of ground water flow in <br /> the area <br /> The County directed Montgomery Ward and Unocal to collect ground water samples from <br /> the Delta College well for analytical testing to determine the presence or absence of <br /> petroleum hydrocarbons In January 1997, during a time when the well was not in <br /> operation, Montgomery Ward representatives collected ground water samples from the well <br /> for analytical testing No TPH-G by modified EPA Method 8015 or volatile organic <br /> compounds (VOCs) by EPA Method 8260 were detected in the ground water samples (see <br /> EAI, 1997C) <br />' In May 1997, during a time when the Delta College well was in operation, Unocal <br /> representatives collected a ground water sample which was tested for TPH-G by modified <br /> EPA Method 8015, BTEX and MTBE by EPA Method 8020 The results of the testing are <br /> t listed below <br /> ANALYTE CONCENTRATION b <br />' TPH-G 110 <br /> Benzene 28 <br /> Toluene 092 <br /> Ethylbenzene 3 1 <br /> Xylenes 66 <br /> MTBE ND <br /> 1 Delta College has been informed of the results of the testing and the County has requested <br /> that Montgomery Ward and Unocal continue to monitor the Delta College irrigation well <br /> I <br /> or pttioleucn hydrocarbons <br /> 1 <br /> Project No 1232 - 5 - <br /> SAB WORD M2CAP <br />