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` r <br /> • Date December 13, 2002 <br /> T EICHERT (STOCKTON) QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility Address: 103 North E Street, Stockton, California <br /> Project Supervisor: George Takemori <br /> Consulting Co./Contact Person: Stratus Environmental, Inc. 1 Jay Johnson _ <br /> Consultant Project No: 2001-0103-01 <br /> Primary Agency/Regulatory ID No: Harlin Knoll 1 San Joaquin County Public Health Services <br /> WORK PERFORMED THIS QUARTER (Third 2002): <br /> 1. Stratus collected groundwater samples from wells MW-13, and MW-14 on September 10, 2002. <br /> 2. Stratus compiled and evaluated groundwater monitoring data. <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2002).- <br /> 1 <br /> 002):1. The next sampling event is tentatively scheduled for December 2002. Groundwater samples will be <br /> collected for laboratory analysis from wells MW-1, MW-13, MW-14, and AS-1. <br /> 2. Groundwater samples will be analyzed at a state-certified analytical laboratory for total petroleum <br /> • hydrocarbons as diesel (TPHD), and total petroleum hydrocarbons as gasoline (TPHG) by EPA <br /> Method SW8015B/DHS LOFT Manual, and for benzene, toluene ethylbenzene, total xylenes (BTEX), <br /> methyl tert-butyl ether (MTBE), tertiary amyl methyl ether (TAME), ethyl tertiary butyl ether (ETBE), <br /> di-isopropyl ether (DIPE), tertiary butyl alcohol (TBA), 1,2-dichloroethane (1,2-DCA), and <br /> 1,2-dibromoethane (EDB) by EPA Method SW8260B, and for total lead by EPA Method SW200.8. <br /> Current Phase of Project: Monitoring <br /> Frequency of Groundwater Sampling: All Wells= Quarterly <br /> Frequency of Groundwater Monitoring: Quarter) <br /> Groundwater Sampling Date: September 10, 2002 <br /> Is Free Product(FP) Present on Site: No <br /> FP Recovered This Quarter: No <br /> Cumulative FP Recovered to Date: NA <br /> Approximate Depth to Groundwater: 51.69 to 51.86 feet below top of well casing <br /> Groundwater Flow Direction: NA <br /> Groundwater Gradient: NA <br /> DISCUSSION: <br /> At the time of the third quarter monitoring event, groundwater was encountered in the monitoring wells at <br /> . depths ranging from 51.69 to 51.86 feet bgs. Groundwater elevations decreased approximately 2.2 feet in <br /> the monitoring wells since the June 4, 2002 monitoring event. <br /> P:1TeichertlStockton-1031Quarter1y120021new Teichert_3Q02.DOC 3TRATU5 <br />