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' ' 05 September 2003 AGE-NC Project No 97-0333 ' Page 3 of 10 ' 24 INFLUENT MONITORING RESULTS In accordance with the requirements of CMPWD Industrial Wastewater Discharge Permit No 02-1, t monthly ground water pump-and-treat influent sampling was performed on 24 January,24 February and 27 March 2003 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 6,000 micrograms per liter (µg/1) in the March 2003 sample TPH-d was detected in the January and February samples at concentrations of 220 µg11 and 280 µg11, respectively ' BTEX constituents were detected at concentrations as high as 480 µg/1 (xylene) in the February sample, in addition, the highest benzene concentration was detected in the February sample at a ' concentration of 170 µg/I MTBE was detected by EPA Method 8260 at concentrations as high as 6,700 µg/1 in the February tsample,TAME was detected during all three months at concentrations as high as 150µg/l,PCE was detected dunng all three months at concentrations as high as 180 µg/l, TCE was detected during the January and February samples at concentrations of 26 µg/1 and 19 µg/l, respectively TBA was detected the January sample at a concentration of 120 µg/l ' The laboratory analysis did not detect any other constituents of concern Analytical results of pump- and-treat influent-water samples(Castle Analytical Laboratory Reference Nos 5420, 5494 and Cal Tech Environmental Laboratories I D 0303-185-30/31/32) are summarized in Table 1, laboratory ' reports are in Appendix A t25 EFFLUENT MONITORING RESULTS In accordance with the requirements of CMPWD Industrial Wastewater Discharge Permit No 02-1, ' monthly ground water pump-and-treat effluent monitoring was performed on 24 January, 24 February and 27 March 2003 for flow rate and laboratory analysis of contaminants listed in Section 2 3 ' Laboratory analysis of pump-and-treat effluent grab water samples collected on 24 January, 24 February and 27 March 2003 did not detect any constituents of concern Analytical results are ' summarized in Table 1, laboratory reports are in Appendix A ' Utilizing a Blue-White Industries F-2000 flow meter,total flow(totalizer)was recorded between 12 December 2002 and 27 March 2002 (Table 5) During this time, the pump-and-treat interim remediation system was in operation for approximately 105 days Based on 183,191 gallons of water ' Advanced GeoEnviroamental,Inc