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' 31 January 2003 A'GE-NC Project No 96-0232 ' Page 5 of 17 Laboratory analysis of pump-and-treat effluent grab water samples collected on 21 November and ' on 05 December 2002 did not detect any petroleum constituents of concern, nitrate as NO3 was detected at concentrations of 40 mg/1 and 40 mg/l, respectively, TDS values were reported at 577 r mg/1 and 570 mg/l, respectively Analytical results are summarized In Tables I and 2, laboratory reports are in Appendices B and C I A bloassay laboratory analysis was performed on the grab sample collected from the effluent stream on 03 December 2002 The analysis utilized sample factors of 0 milliliter (ml), 125 ml, 500 ml, 1,000 ml, 1,500 ml and 2,000 ml Each sample factor was tested with 20 Fathead minnow fish and a dilution volume of 2,000 ml of di-ionized water, pH, dissolved oxygen (DO) and temperature parameters were monitored and fish mortalities were counted over 96 hours The results of the bioassay analysis did not indicate any trends for pH, DO or temperature over,the 96 hour period Temperature measurements generally vaned between 19 4 and 20 4 degrees Celsius (°C), pH measurements vaned between 7 20 and 7 50 and DO measurements vaned between 6 10 mg/1 and 8 40 mg/1 The laboratory reported that there were zero fish mortalities after 96 hours in the above referenced sample, laboratory analysis of a duplicate effluent sample reported zero fish mortalities after 96 hours The bioassay analysis Is summarized in Table 3, laboratory reports are in Appendix C , • Utilizing an ICM water analyzer in the field, EC values were monitored on 21 November and on 05 December 2002 at 1,042 µmhos/cm and 939 µmhos/cm,respectively,pH values were monitored at 7 64 and 7 34, respectively, and temperature values at 214 °C and 21 0 °C, respectively Field monitoring results are summarized In Table 2 Utilizing a Blue-White Industries F-2000 flow meter, flow rates were measured and recorded on 21 November and on 05 December 2002 at 24 77 GPM and 23 78 GPM (Appendix A) 2 6 RECEIVING WATER MONITORING RESULTS In accordance with the requirements of RWQCB Monitoring and Reporting Program No 5-00-119, monthly ground water pump-and-treat receiving water(R-1 and R-2)monitoring was performed for total dissolved solids, flow rate, specific conductivity (EC), pH and turbidity Observations noted In a log book(Appendix A) included floating or suspended matter, discoloration,bottom deposits, aquatic life, visible film-sheen-coatings, fungi and potential nuisance conditions Water monitoring could not be performed from R-1 during the 21 November and 05 December 2002 monthly monitoring events because there was no upstream water flow Because there was no Iupstream flow at R-1, the downstream flow rate at R-2 appeared to be equal to the ground water pump and treat effluent flow rate of approximately 24 77 GPM and 23 78 GPM,,respectively Advanced GeoEnvironmental,Inc