Laserfiche WebLink
• Date November 14, 2000 <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 00548 Address 1612 Hammer Lane, Stockton, California <br /> ARCO Environmental Engineer Chuck Carmel <br /> Consulting Co/Contact Person Delta Environmental Consultants, Inc /Jay R Johnson <br /> Consultant Project No D000-321-1 <br /> Primary Agency/Regulatory ID No Lori Duncan, San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER (Third 2000) <br /> 1 Groundwater samples were collected from monitoring wells MW-1 through MW-6 for laboratory <br /> analysis <br /> 2 Delta Environmental, Inc compiled and evaluated groundwater-monitoring data <br /> 3 Conducted startup of the Air Sparge/Soil Vapor Extraction system (AS/SVE) on September 28, 2000 <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2000) <br /> 1 Quarterly groundwater monitoring will continue on behalf of ARCO The next sampling event is <br /> tentatively scheduled for December 2000 Monitoring wells MW-1 through MW-6 will be sampled and <br /> analyzed for total petroleum hydrocarbons as gasoline (TPHG) using United States Environmental <br /> Protection Agency (USEPA) Method 8015 modified, and for benzene, toluene, ethylbenzene, and total <br /> xylenes, using USEPA Method 8020 Groundwater samples will also be tested for methyl tertiary butyl <br /> ether (MTBE), di-isopropyl ether (DIPS), ethyl tertiary butyl ether (ETBE), and tertiary amyl methyl <br /> ether(TAME) and 1-2-Dichloroethane (1,2-DCA) using EPA method 8260A <br /> 2 Prepare and submit the results of the source test conducted during startup of the AS/SVE <br /> 3 Operation and maintenance of AS/SVE system <br /> Current Phase of Project Monitoring/Remediation <br /> Frequency of Groundwater Sampling Wells MW-1 through MW-6 = Quarter/ <br /> Frequency of Groundwater Monitoring Quarter/ <br /> Sampling Date September 28, 2000 <br /> Is Free Product(FP) Present on Site No <br /> FP Recovered this Quarter NA <br /> Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater 27 00 to 28 94 feet <br /> Direction of Groundwater Flow East-Northeast <br /> Groundwater Gradient 0 0038 ft/ft <br /> C\My Documentslarco105481QTRLY1200010548Q300 DOC Delta <br /> 11/14/00 <br />