Laserfiche WebLink
Chevron <br /> Chevron <br /> Chevron U.S.A.Products Company <br /> 6001 Bollinger Canyon Road <br /> Building L <br /> San Ramon,CA 94583 <br /> P.O.Box 5004 <br /> San Ramon,CA 94583-0804 <br /> October 20, 1995 Marketing-Northwest Region <br /> Phone 510 842 9500 <br /> Mr.Harlin Knoll <br /> San Joaquin County Public Health Services <br /> P.O.Box 388 <br /> Stockton, CA 95201-0388 <br /> Re: Chevron Station#9-2033, 508 W. Charter Way, Stockton, CA <br /> Attached Groundwater Monitoring Report(Blaine Tech, 7/14/95) <br /> Dear Mr. Knoll: <br /> • Attached you will find a report dated July 14, 1995,which was prepared by Chevron's consultant,Blaine <br /> Tech Services,Inc. (Blaine Tech),to describe the results of groundwater monitoring that was performed at <br /> the subject site on May 26, 1995. <br /> During their May site visit Blaine Tech gauged and sampled all three site-related wells.The measured <br /> direction of groundwater flow beneath the site was toward the southwest. Groundwater samples collected <br /> from each well were analyzed for the presence of TPHGas,BTEX constituents,and halogenated volatile <br /> organic compounds(HVOC's). In addition,samples from well MW-1 were analyzed for waste oil <br /> constituents(i.e.,TPHDiesel,total oil and grease,metals,and semi-volatile organic compounds- <br /> SVOC's). <br /> There were detectable concentrations of dissolved petroleum hydrocarbons measured at wells MW-1 and <br /> MW-3. No dissolved hydrocarbons were detected at well MW-2. Groundwater samples from both,MW-I <br /> and MW-3 also contained 1,2 Dichloroethane. Phenol was detected in groundwater at well MW-1. <br /> According to the measured direction of groundwater flow beneath the site,the presence of dissolved <br /> hydrocarbons at well MW-3 suggests the possibility of an offsite,upgradient source. Subsequent <br /> groundwater monitoring results will be evaluated to verify this. <br /> If you have any questions or comments,I can be reached at(510) 842-8695. <br /> Sincerely, <br />