Laserfiche WebLink
DATE Au4ust 20, 2004 S E C ® R <br /> 7-ELEVEN, INC. QUARTERLY REPORT <br /> Store Number 7-Eleven Store#19976 <br /> Site Address 1399 North Main Street, Manteca, CA <br /> 7-Eleven Contact Mr Ken Hilliard <br /> Consulting Company SECOR International, Inc — Mr Jaff Auchterlonie <br /> SECOR Project No 77EL 19976 04 <br /> Primary Agency San Joaquin County Environmental Health Department <br /> SJCEHD j <br /> WORK PERFORMED THIS QUARTER [Second —2004] <br /> 1 Conducted groundwater monitoring and sampling of ten wells on June 10, 2004 <br /> 2 Performed periodic oxygen injection in wells SP-1 and SP-1A on April 12, April 23, May 13, <br /> May 18, May 24, June 7, and June 21, 2004 <br /> 3 Conducted soil vapor extraction (SVE) equipment inspection and a 22-hour SVE event on <br /> June 2, 2004 <br /> 4 Prepared quarterly groundwater sampling and remediation progress report ty <br /> 5 Submitted Groundwater Monitoring and Sampling Reduction Request, dated April 9, 2004 <br /> WORK PROPOSED FOR NEXT QUARTER [Third —2004] <br /> 1 Perform quarterly groundwater sampling and prepare status report <br /> 2 Continue periodic oxygen injection into wells SP-1 and SP-1A <br /> 3 Continue periodic sod vapor extraction <br /> • DISCUSSION <br /> An active 7-Eleven convenience store and gasoline station is operated at the site (Figures 1 <br /> and 2) Monitoring and sampling has been conducted at the site since the third quarter of $ <br /> 1998 The current groundwater monitoring and sampling data are summarized in Table 1, <br /> and presented in Figures 2 and 3 Historical groundwater monitoring and sampling results n <br /> are summarized in Table 2 The well completion details are summarized in Table 3 <br /> Current Site Information y <br /> Current Phase of Project Groundwater Monitoring and Periodic <br /> Remediation } <br /> a <br /> Frequency of Monitoring and Sampling Quarterly, Ten wells- MW-1 through <br /> MW-7, MW-1A, MW4A, MW-5A h <br /> Are Liquid Phase Hydrocarbons Present On-site No <br /> Water Supply Wells within a 2,000-foot radius and 65 wells within 2,000 feet in various <br /> their Respective Direction directions <br /> Current Remediation Techniques Oxygen injection and sod vapor ±_ <br /> extraction <br /> Permits for Discharge San Joaquin Valley Air Pollution <br /> Control District Authority to Construct <br /> No N-4761-1-0 <br /> • Historic Range in Depth to Water, Q3-98 to Q2-04 MW-1, 14 17 to 23 08 feet bgs <br /> 19976 04-20 Report doc <br />