ARCHIVED REPORTS_XR0006925 - Laserfiche WebLink

Home Browse Search

I r', I f 26 April 2004 1 ' i AGE-NC Project No 97-0333 ; ' Page 4 of 12 concentrations of 58 µg/1 and 60 µg/l, respectively, TCE was detected in the December sample at ' a concentration of 14 µg/1 , PCE was detected from the September, November and December samples at concentrations as high as 190 µg/1 in the December sample ' The laboratory analysis did not detect any other constituents of concern Analytical results of extraction and treatment influent-water samples (McCampbell Analytical Inc Work Order Nos ' 0309192, 031'0447, 0311267, Cal Tech Environmental Laboratories ID No 0312-204) are summarized in Table 1, laboratory reports are in Appendix A ' 215 EFFLUENT MONITORING RESULTS In accordance with the requirements ofCMPWD Industrial Wastewater Discharge Permit No 021 1, ' monthly groundwater extraction and treatment effluent monitoring was performed on 10 September, 27 October, 19 November and 26 December 2003 for flow rate and laboratory analysis of ' I contaminants listed in Section 2 3 Additionally, confirmation sampling for MTBE and TBA was conducted on 18 September, 24 September and 13 October 2003 During the September 2003 monitoring event,the 10 September 2003 effluent water sample detected TBA at a concentration of 80 micrograms per liter(µg/1) and was confirmed on 18 September and on 24 September 2003 at concentrations of 70 p:g/l and 190 µg11, respectively Laboratory analysis ' of extraction and treatment effluent grab water samples did not detect any other constituents of concern Analytical results are summarized in Table 1, laboratory reports are in Appendix A 1 I ! ' � Utilizing aBlue-White Industries F-2000 flow meter,total flow(totalizer)was recorded between 10 September 2003 and 26 December 2003 (Table 5) During this time, the extraction and treatment ' interim ground water remediation system was in operation for approximately 75 days Based on the total of approximately 205,130 gallons of water recorded during this time, AGE estimated that an average 2,735 gallons of water was discharged pen day during this time i I ` 2 6 MASS-VOLUME REMOVAL CALCULATIONS 1I ' I s 6 i ' ` I , F 1 Between 10 September and 26 December 2003,an estimated 5 18 pounds of MTBE was extracted j from ground water (Table 5),,since the system was Iinrtlated on 21 January 2002, a total mass of 1 220 34 pounds of MTBE has been removed The September 2003 to December 2003 mass-volume calculations of MTBE-impacted ground water extracted from the'ground water ektraction and it I treatment 'system are presented in Appendix B Plots,of cumulative ground water pump and treat mass 'removal trends and influent ground water MTBE ,concentrations versus time are� in, v I Appendix C F J Advanced Gen Environmental,Inc 1 . I I e l'Y