ARCHIVED REPORTS_XR0009174 - Laserfiche WebLink

Home Browse Search

DATE August 10, 2004 S E C ® R 7-ELEVEN, INC. QUARTERLY REPORT Store Number 7-Eleven Store#17334 Site Address 4501 North Pershing Avenue, Stockton, CA 7-Eleven Contact Mr Ken Hilliard Consulting Company SECOR International, Inc — Mr Jaff Auchterlonie SECOR Project No 77EL 17334 04 Primary Agency San Joaquin County Environmental Health Department _(SJCEHD) _ _ WORK PERFORMED THIS QUARTER [Second—20041 1 Conducted groundwater monitoring and sampling of five wells on April 7, 2004 2 Prepared quarterly groundwater sampling report WORK PROPOSED FOR NEXT QUARTER [Third — 2004] 1 Perform quarterly groundwater sampling 2 Prepare status report DISCUSSION An active 7-Eleven convenience store and gasoline station is operated at the site (Figures 1 and 2) Monitoring and sampling has been conducted at the site since the fourth quarter of 1997 The current groundwater monitoring and sampling data are summarized in Table 1, and presented in Figures 2 and 3 Historical groundwater monitoring and sampling results . are summarized in Table 2 The well completion details are summarized in Table 3 Current Site Information t Current Phase of Project Groundwater Monitoring Frequency of Monitoring and Sampling Quarterly, Five wells- MW-2, MW-3, MW-4, MW-5A, and MW-513 Are Liquid Phase Hydrocarbons Present On-site No Water Supply Wells within a 2,000-foot radius and their Respective Direction 1,500 feet upgradient (type unknown) Current Remediation Techniques None Permits for Discharge None Historic Range in Depth to Water, Q4-97 to Q2-04 MW-2, 14 95 to 19 89 feet bgs Current Quarter Monitorina Data (See Figure 2 and Table 1) Wells Monitored and Sampled Five wells- MW-2, MW-3, MW-4, MW- 5A, and MW-513 Dissolved Oxygen Concentrations Measured In Five wells- MW-2, MW-3, MW-4, MW- 5A, and MW-513 Depth to Groundwater(DTW) 17 19 to 18 32 ft bgs , Average Change in Groundwater Elevation Since iLast Event 0 47 foot increase A 17334 04-2Q Report doc