SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

• San Joaquin County DIRECTOR Donna Heran,RENS Environmental Health Department ASSISTANT DIRECTOR 600 East Main Street Laurie Cotulla,REHS NStockton, California 95202-3029 PROGRAM COORDINATORS ILL •LL • Carl Borgman, REHS c P Website: www.s ov.or /ehd Mike Huggins,REHS,RDI 4�ikb Ra J9 9 Margaret Lagorio,REHS Phone: (209) 468-3420 Robert McClellon,REHS leff o. Fax: (209) 464-0138 DEC 2 d 2007 KaseyaFoley RHSHS, RDI GENE GABBARD JIM & SHEYLA CREEL 10335 CREEK TRAIL 640 EL DORADO STREET STOCKTON CA 95209 STOCKTON CA 95202 RE: Gabbard Property SITE CODE: 1090 640 EI Dorado Street Stockton CA 95202 On June 6, 2006 a meeting was held at your request to discuss the above referenced contaminated underground storage tank (UST) site. The meeting was held at the San Joaquin County Environmental Health Department (SJC/EHD) office; a letter summarizing the results of the meeting was sent to you on June 12, 2006. Since the meeting, the State Water Resources Control Board (SWRCB) Underground storage tank (UST) Cleanup Fund (FUND) has determined that the costs associated with the investigation of the chlorinated solvent contamination at your site will not be reimbursed by the FUND. The FUND will reimburse for costs associated with the petroleum hydrocarbon investigation required due to an unauthorized release from the waste oil UST formerly used at the site. The SJC/EHD has authority to require investigation of all unauthorized releases from UST's pursuant to Health and Safety Code Section 25299.36. Since tetrachloroethene (PCE) as well as petroleum hydrocarbons were found in the soil sample collected beneath the waste oil UST removed from this site in March 1997, the SJC/EHD has required corrective action for all contaminants of concern resulting from the unauthorized release from the former waste oil UST. At the meeting it was suggested that the source of the PCE found in the groundwater samples from the monitoring wells was from an off-site source. The SJC/EHD requested that the hypothesis that the PCE in the groundwater is from an off- site source be demonstrated. If PCE had been the only contaminant found in the soil beneath the waste oil UST, the SJC/EHD would have referred oversight of the corrective action to the Central Valley Regional Water Quality Control Board (CVRWQCB). Since the Local Oversight Program costs are specific to petroleum releases the SJC/EHD will refer the chlorinated solvent issue to the CVRWQCB. The SJC/EHD will not require further analysis for chlorinated solvents; however, several issues must still be addressed regarding the petroleum hydrocarbon contamination, specifically: 1. The vertical extent of hydrocarbon-impacted groundwater must be defined; 2. You must demonstrate that free product is no longer present at the site; 3. It must be shown that the contaminant mass remaining onsite is of low risk to human health and the environment;