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+ I r ,! rl I' 23 December 2003 r ,I c AGE-NC,Project No 97-0333 i I 'I � I Irll ' Page 3 of 11 i o KII ' I � II ' Total petroleum hydrocarbons quantified as 'gasoline and diesel (TPH-g and TPH-d, respectively) byEPAMethods 3550/503018015 Modified, 1. ilk, • Benzene,toluene,ethyl benzene and xylene(BTEX)and methyl-tertiary butyl ether(MTBE) I , ' by EPA Method 8020,`and , r • TetrachIoroethene (PCE), trichloroethene (TICE), 1,2-dichloroethane (1,2-DCA), ethylene dl-bromide (EDB), tertiary butanol (TBA), dl-Isopropyl ether(DIPE),, ethyl tert butyl ether 4 (ETBE), tert amyl methyl ether(TAME) and MTBE by EPA Method 8260 Modified' 2 4 INFLUENT MONITORING RESULTS,a ' In accordance with the requirements of CMPWD Industrial Wastewater Discharge Permit No 02-1, I I monthly ground water pump-and-treat influent sampling was performed on 19 June, 11 July, 14 August and 10 September 2003 for'laboratory analysis,of contaminants listed in Section 2 3 During all four monthly,monitonng events,influent water samples detected TPH-g at concentrations ' as high as 2,800 micrograms per liter(µg/1) in the June 2003 sample, TPH-d was detected as high as 620 µg/1 in the June 2003 sample BTEX constituents were detected at concentrations as high as 690µg/1(xylene)in the June sample, in addition,the highest benzene concentration was detected in the June sample at a concentration of I` '200 µg11 IN' MTBE was detected by EPA Method 8260 at concentrations as high as 4,600 µg/l in the June sample, TAME was detected from the August, sample at a concentration of 51 µg/l, PCE 1 was I ' detected during all four months at concentrations as high as 230 µg/l in the June and July samples The laboratory analysis did not detect any other constituents of concern Analytical results of pump- and-treat influent-water samples(McCampbeli Analytical Inc Work Order Nos 0307420,0308234 and 0309192) are summarized in Table 1, laboratory reports are in Appendix A ' ' r I E 2 5 I EFFLUENT�MONITORINGIRESULTS !II I, I ` In accordance with the requirements ofCMPWD Indu.stnal Wastewater Discharge Permit No 02-1, monthly ground water pump-and-tread effluent monitoring was performed on,19' June, 11 July, ' 14 August and 1'0 September 2003 for'flow rate and laboratory analysis of contaminants listed in I Section 2 3 ' ' " i Advan�c,ed�, CeoEnvironmental,Inc