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Page 1 of 3 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Monday, June 25, 2012 11:58 AM <br /> To: Adrienne Ellsaesser[EH]; Nuel Henderson [EH] <br /> Subject: RE: BP 2186 <br /> Adrienne, <br /> VW-1A-VW-1 B, and VW-2A-VW-213, are both nested wells that were installed using ten-inch augers. VW- <br /> 1A and VW-2A are screened 22 to 36 feet bsg, and VW-1 B and VW-213 are screened 42.5 to 61.5 feet bsg. <br /> When VW-1 was installed they found: <br /> TPHg - 3.3 mg/kg @ 41.5 feet bsg and 1.1 mg/kg at 56.6 feet bsg <br /> benzene -0.015 mg/kg at 56.5 feet bsg <br /> bsg and 0.062 mg/kg at <br /> 56.5 feet bs <br /> toluene 0.024 mg/kg at 41.5 feet g g 9 <br /> 9 9 <br /> 9 <br /> eth lbenzene-0.03 mg/kg at 41.5 feet bsg and 0.02 mg/kg at 56.5 feet bsg <br /> Y 9 g <br /> m <br /> xylene -0.024 /kg at 31.5 feet bs , 0.2 mg/kg at 41.5 feet bsg, and 0.18 mg/kg at 56.5 feet bsg. <br /> Y 9 <br /> Groundwater has not been collected from -1A and VVII10(because the wells are dry. <br /> Groundwater from VW-1 B has been clean for the last two sampling events. This well had a history of low <br /> concentrations of MTBE in groundwater. Since 2008 the MTBE concentrations have been 14 ug/L or below. <br /> When VW-2 was installed they found: <br /> TPH-g - 1.4 mg/kg at 36.5 feet bsg <br /> toluene-0.01 mg/kg at 56.5 feet bsg <br /> ethylbenzene -0.01 mg/kg at 36.5 feet bsg <br /> xylenes -0.010 mg/kg at 11.5 feet bsg, 0.052 mg/kg at 36.5 feet bsg, 0.0067 mg/kg at 46.5 feet bsg, and <br /> 0.014 mg/kg at 56.5 feet bsg. <br /> Groundwater had 0.66 ug/L of MTBE during the last sampling event on 06109111. Except for low concentrations <br /> of MTBE (< '14 ug/L since 2007)this well is clean. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, California 95205 <br /> Phone: (209)468-9852 <br /> Email: vmccartneyOsicehd.com <br /> From: Adrienne Ellsaesser [EH] <br /> 25, 2012 8:18 AM <br /> : Monday, <br /> Sent y, ]une <br /> To: Vicki McCartney [EH]; Nuel Henderson [EH] <br /> Subject: FW: BP 2186 <br /> They are asking for a waiver for removing the well and the mushroomca .p What is the depth?Can it be <br /> pulled out?What is the concentration of contaminants? <br /> From: Morescalchi, Sergio [mailto:Sergio.Morescalchi@bp.com] <br /> Sent: Friday, June 22, 2012 9:02 AM <br /> To: Adrienne Ellsaesser [EH] <br /> Subject: FW: BP 2186 <br /> Hi Adrienne, <br /> 6/25/2012 <br /> I <br />