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' Gasoline contaminated purge & rinseate water generated during the activities . described above was stored in poly drums located on the site American Valley Environmental will remove this material prior to the next scheduled depth to ' water measuring event ' 2.2 Groundwater Sample Analyses Groundwater samples were analyzed as follows • Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method 8015(m) • Benzene, Toluene, Ethylbenzene, and Xylene (BTEX) by EPA method 602 The detection limits are included in the summary analytical data table (Table 1) Detectable levels of gasoline range petroleum hydrocarbons and/or BTEX compounds were found in water samples from 4 of the 5 wells that were sampled ' 2.3 Field Data The field data for this groundwater monitoring event are summarized in Table 1 The level of groundwater has risen about 2 feet since the last groundwater monitoring event completed on December 19th, 2003 As shown an Figure 3, the ' gradient is consistent with its historical norms with a northeast bearing of flow Based on the field data obtained in this monitoring event, the overall groundwater gradient and bearing of flow as determined by a 3-point calculation from wells MW-4, MW-8 and MW-9 is 0 0016 ft/ft on a bearing of N63-E This ' compares with a gradient and bearing of 0 0018 ft/ft on a bearing of N58-E from the June monitoring event ' 2.4 Waste Disposal Purge water from this monitoring event was temporarily stored in 55-gallon ' drums on the site The waste water will be removed for recycling prior to the next monitoring event Purge water from the prior event was collected on March 11, 2004 for recycling by American Valley Waste Oil, a licensed ' hazardous waste hauler A copy of the manifest is attached as Appendix C I 2937 Veneman Ave ,#5240 Geo-Phase Environmental Inc Phone (209) 569-0293 Modesto, CA 95356 Fax (209) 569-0293