SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

Oheymn iiEAi_TN -40Chevron Pi it <FRVICF - 93 SE127 FM 3: 03 Chevron U.S.A.Products Company 2410 Camino Ramon San Ramon,CA 94583 September 23, 1993 Marketing Department Phone 510 842 9500 Mike RECEIVED San Joaquin County Environmental Health P.O. sox 2009 SEP 2 7 1993 Stockton, CA 95201 ENVIRONMENTAL HEALTH PERMIT/SERVICES Re: Chevron Service Station#9-0302, 6421 Paddock Place,Lodi, CA Attached groundwater monitoring report(GTI, 6/25/93) Attached 1990 tank venting system soil sample results(Hanby Analytical,7/5/90) Dear Mr. Infurna: Please find attached a report dated June 25, 1993 which was prepared by Chevron's consultant, Groundwater Technology, Inc. (GTI), to describe groundwater monitoring at the subject site on May 18, 1993. The measured direction of groundwater gradient was toward the northwest. Trace amounts (1.6 ppb) of dissolved benzene were detected in monitoring well MW-1. There were no other dissolved hydrocarbons detected in groundwater beneath the site. The groundwater monitoring data were requested by San Joaquin County Public Health Services (SJCPHS) in their letter dated, April 12, 1993. Chevron voluntarily provided these data to facilitate the permitting process for monitoring well abandonment. In the April 12, 1993 letter, SJCPHS also requested the locations and analytical results of soil samples obtained during a tank venting system upgrade performed in June, 1990. A copy of the soil analytical results and sample locations from the June, 1990 tank vent work were provided to Chevron by the former property owner. Copies have been attached for your information. It was also requested that Chevron collect and analyze water samples from a well operated by the San Joaquin County Fire Department on an adjacent property. No groundwater samples were collected from the fire department's well during GTI's May site visit. For your information, Chevron has never owned or operated any underground storage tanks or facilities at the subject site. Our primary involvement at the site has been through our supply contract with the service station dealer. Therefore, Chevron should not be identified as a responsible party for any investigation or remediation that may be necessary at this site. The three groundwater monitoring wells were installed by Chevron in May, 1991 when a purchase of the property and facilities was being considered. The purchase never occurred. Chevron has no further use for the three wells and would like to abandon them as soon as possible. A work plan describing the abandonment procedure will be provided to SJCPHS for review and permitting. I was recently contacted by one of the current property owners, Mr. Cecil Dillon. He expressed his interest in having the monitoring wells onsite removed. He also informed me of his own efforts toward having the wells abandoned. Apparently, Mr. Dillon's consultant, Del-Tech, has submitted