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t`I Date January 5,_2004 • APACHE PLASTICS QUARTERLY GROUNDWATER MONITORING REPORT Facility Address 2050 East Fremont Street, Stockton, California Consulting Co/Contact Person Stratus Environmental, Inc /Jay Johnson, R G Consultant Project No 2005-2050-01 Primary Agency/Regulatory 1D No Lori Duncan 1 San Joaquin County Environmental Health Department 12313 WORK PERFORMED THIS QUARTER(Fourth 2003) 1 Stratus measured groundwater elevations and collected groundwater samples from wells VEW-1, MW-2, MW-4, and MW-6 through MW-12 on November 10, 2003 MW-5 and VEW-2 were inaccessible (facility closed) and could not be sampled Well MW-3 remains obstructed and could not be monitored or sampled 2 Stratus compiled and evaluated groundwater monitoring data WORK PROPOSED FOR NEXT QUARTER (First 2004) 1 The next sampling event is tentatively scheduled for February 2004 Groundwater samples will be collected for laboratory analysis from wells VEW-1, VEW-2, and MW-2 through MW-12 2 Groundwater samples will be analyzed at a state-certified analytical laboratory for total petroleum hydrocarbons as gasoline (TPHG) by EPA Method SW8015t31DHS LOFT Manual, and for benzene, toluene, ethylbenzene, total xylenes (BTEX), methyl tert-butyl ether (MTBE), tertiary amyl methyl ether(TAME), ethyl tertiary butyl ether(ETRE), di-isopropyl ether(DIPE), tertiary butyl alcohol (TBA), 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) by EPA Method SW8260B The laboratory will attempt to identify all peaks detected in the EPA Method 82606 analysis 3 Stratus will begin implementing the additional environmental assessment and well abandonment activities outlined in the Work Plan for Additional Site Assessment (dated April 9, 2002), the Work Plan Addendum(dated October 1, 2002), and the SJCEHD approval letter dated July 17, 2003 Current Phase of Project Assessment Frequency of Groundwater Sampling All Wells= Quarterly Frequency of Groundwater Monitoring Quarterly Groundwater Sampling Date November 10, 2003 Is Free Product(FP) Present on Site No FP Recovered This Quarter NA Cumulative FP Recovered to Date NA Depth to Groundwater(upper zone) 50 31 to 51 99 feet below top of well casing Depth to Groundwater(lower zone) 51 01 to 52 49 feet below top of well casing Groundwater Flow Direction/Gradient(upper zone) Southeast/0 002 ft/ft Groundwater Flow Direction/Gradient(lower zone) Southeast 10 007 ft/ft • P\Apache P1astics\Quarterly reports\20031Apache_4Q03 DOC 5rKAru5