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r ' 01 October 2004 AGE-NC Project No 97-0333 ' Pagc 3 of 11 ' Tetrachloroethene (PCE), trichloroethene (TCE), 1,2-dichloroethane (1,2-DCA), ethylene dibromide (EDB), tertiary butanol (TBA), di-isopropyl ether (DIPE), ethyl tert butyl ether (ETBE), tert amyl methyl. ether(TAME) and MTBE by EPA Method 8260 Modified 2 4 INFLUENT MONITORING RESULTS In accordance with the requirements of CMPWD Industrial Wastewater Discharge Permit No 02-1, monthly ground water extraction and treatment influent sampling was performed on 15 January, ' 11 February and 10 March 2004 for laboratory analysis of contaminants listed in Section 2 3 ' During all three monthly monitoring events,influent water samples detected TPH-g at concentrations as high as 14,000 micrograms per liter(µg11)in the February 2004 sample, TPH-d was not detected in any of the above referenced samples ' Various BTEX constituents were detected in all three of the above samples at concentrations as high as 660 µg/1(xylene,March 2004), in addition,the highest benzene concentration was detected in the February 2004 sample at a concentration of 300 µg/l MTBE was detected(EPA Method 8260)in all three samples at concentrations as high as 6,300µg/1 in the February sample, TAME was detected in all three samples at concentrations as high as 150 µg/1,TCE was detected in all three samples at concentrations as high as 35 µg/1 in the March 2004 sample ,PCE was detected in all three samples at concentrations as high as 340 µg/1 in the February ' 2004 sample " The laboratory analysis did not detect any other constituents of concern Analytical results of ' extraction and treatment influent-water samples (Cal Tech Environmental Laboratories I D Nos 0401-089, 0402-056 and 0403-091) are summarized in Table 1, laboratory reports are in Appendix A 2 5 EFFLUENT MONITORING RESULTS In accordance with the requirements of CMPWD Industrial Wastewater Discharge Permit No 02-1, monthly ground water extraction and treatment effluent monitoring was performed on 15 January, 11 February and 10 March 2004 for flow rate and laboratory analysis of contaminants listed in Section 2 3 Advanced GcoEnvironmental,Inc