Laserfiche WebLink
LtCChevron <br /> -T i <br /> ► Chevroit <br /> - i�V1r <br /> Chevron U.SA. Products Company <br /> 6001 Ballinger Canyon Rd., Bldg. L <br /> P.D. Sox 5004 <br /> San Ramon,CA 945BU804 <br /> Site Assessment& Remediation Group <br /> Phone (510)842-9500 <br /> September 6, 1995 <br /> Ms.Mary Meays <br /> San Joaquin County Environmental Health Department <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Former Chevron Station 49-7780 3246 East Fremont Street Stockton CA 95205 <br /> Attached Groundwater Monitoring Report(Blaine Tech, 7119195) <br /> Attached Contaminant Fate and Transport Model Results(CRTC, 8131195) <br /> Dear Ms. Meays: <br /> Please find attached a report dated July 19, 1995,which was prepared by Chevron's consultant,Blaine <br /> Tech Services,Inc. (Blaine Tech),to describe results of groundwater monitoring at the subject site on June <br /> 15, 1995. You will also find attached a memorandum dated August 31, 1995,which was prepared by Curt <br /> Peck of Chevron Research and Technology Company(CRTC).Both documents are being provided to <br /> satisfy the final requirements for case closure that were specified by your agency's Technical Review <br /> Committee on April 12, 1995. <br /> During Blaine Tech's June site visit six of the eight site-related wells were gauged:Monitoring wells EA- <br /> 4 and EA-5 were not located. Depth to water measurements were obtained from three of the six gauged <br /> wells. Monitoring wells EA-1,EA-2, and EA-3 were dry. The measured direction of groundwater flow <br /> was toward the southwest. No samples were collected from wells MW-4,MW-5, or EA-6 since the depth <br /> to groundwater at these wells was greater than sixty feet below ground surface. All further groundwater <br /> monitoring at the site has been suspended pending a decision from your agency on the request for case <br /> closure. <br /> The attached memorandum describes the results of a contaminant fate and transport model which was run <br /> to evaluate the potential threat to groundwater from residual hydrocarbons in soil at the subject site. In <br /> addition,the memorandum discusses all input parameters,assumptions, and calculations that were used. <br /> The results of both model scenarios indicate that residual hydrocarbons in soil do not pose a threat to <br /> groundwater. These results are supported by actual site data. <br /> The information presented in these two attachments should satisfy those requirements for case closure that <br /> were specified by the Technical Review Committee. As a result, Chevron requests that case closure be <br /> granted for the subject site. Once concurrence has been received from your agency, Chevron will proceed <br /> to apply for the necessary permits to abandon all wells properly. <br /> If you have any questions or comments,I can be reached at(510) 842-8695. <br />