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r <br /> 1 Former Manna Pro Site Page 4 <br /> Quarterly Groundwater Monitoring; Report <br />' Project No 207 2 <br /> January 11, 2005 <br />' labeled, inserted into foam holders and placed in an ice chest cooled to 4°C for <br /> transport to the laboratory <br />' Gasoline contaminated purge & rinseate water generated during the activities <br /> described above was stored in poly drums located on the site American Valley <br /> Environmental will remove this material prior to the next scheduled depth to <br />' water measuring event <br />' 2.2 Groundwater Sample Analyses <br /> Groundwater samples were analyzed as follows <br />' • Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method <br /> 8015(m) <br />' • Benzene, Toluene, Ethylbenzene, and Xylene (BTEX) by EPA method 602 <br /> The detection limits are included in the summary analytical data table (Table I) <br />' Detectable levels of gasoline range petroleum hydrocarbons and/or BTEX <br /> compounds were found in samples from 5 of the 6 samples <br /> 2.3 Field Data <br />' The field data for this groundwater monitoring event are summarized in Table <br /> 1 The level of groundwater has risen about 15 feet since the last <br /> groundwater monitoring event completed on September 1St, 2004 As shown in <br /> Figure 3, the gradient is consistent with its historical norms with a northeast <br /> bearing of flow <br /> Based on the field data obtained in this monitoring event, the overall <br /> groundwater gradient and bearing of flow as determined by a 3-point <br /> calculation from wells MW-4, MW-8 and MW-9 is 0 0016 ft/ft on a bearing of <br /> N24oE This compares with a gradient and bearing of 0 0033 ft/ft on a bearing <br /> of N46E from the June monitoring event <br /> I2.4 Waste Disposal <br /> Purge water from this monitoring event was temporarily stored in 55-gallon <br /> drums on the site The waste water will be removed for recycling prior to the <br /> next monitoring event Ameriacn Valley Waste Oil removed water from the <br /> two previous monitoring events for rechng on December 16, 2004 A copy of <br /> • the manifest is attached as Appendix C <br /> 2937 Veneman Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br /> I <br />