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<br /> 1 15 January 2002
<br /> AGE-NC Project No 96-0232
<br />' Page 4 of 16
<br />' treat influent-water samples are summarized in Table 1, laboratory reports are in Appendix B
<br />' 2 5 EFFLUENT MONITORING
<br /> In accordance with the requirements of RWQCB Monitoring and Reporting Program No 5-00-119,
<br />' monthly ground water pump-and-treat effluent monitoring was performed for flow rate, specific
<br /> conductivity(EC), pH, temperature, total dissolved solids (TDS),TPH-g, TPH-d, TPH-mo, BTEX,
<br /> MTBE, methanol, ethanol, DIPE, TAME, ETBE, TBA, nitrate and total lead on 15 October, 07
<br /> 1 November and 12 December 2001, additionally, ground water pump-and-treat effluent quarterly
<br /> sampling for bioassay analysis was performed on 18 December 2001
<br />' Laboratory analysis of pump-and-treat effluent grab water samples collected on 15 October, 07
<br /> November and 12 December 2001 did not detect any petroleum constituents of concern (Table 1),
<br />' nitrate as NO3 was detected at concentrations of 46 milligrams per liter(mg/1), 49 mg/1 and 50 mg/l,
<br /> respectively, TDS values were reported at 420 mg/l, 613 mg/l and 586 mg/l, respectively Analytical
<br /> results are summarized in Tables 1 and 2, laboratory reports are in Appendices B and C
<br /> A bioassay laboratory analysis was performed on the grab sample collected from the effluent stream
<br /> on 18 December 2001 The analysis utilized sample factors of 0 milliliter (ml), 125 ml, 500 ml,
<br /> 1,000 ml, 1,500 ml and 2,000 aril Each sample factor was tested with 20 Fathead minnow fish and
<br /> a dilution volume of 2,000 ml of di-ionized water, pH, dissolved oxygen (DO) and temperature
<br /> parameters were monitored and fish mortalities were counted over 96 hours The bioassay analysis
<br /> generally reported a steady decrease in pH and DO in each sample factor over the 96 hour period,
<br /> the analysis reported increasing pH and DO values with increasing sample factors Temperature
<br /> measurements varied between 20 5 and 20 8 degrees Celsius (°C) The laboratory reported that there
<br /> was one fish mortality after 96 hours in the above referenced sample, laboratory analysis of a
<br /> duplicate sample reported no fish mortalities after 96 hours The bioassay analysis is summarized
<br /> in Table 3, laboratory reports are in Appendix C
<br />' Utilizing an ICM water analyzer in the field, EC values were monitored on 15 October, 07
<br /> November and 12 December 2001 at 876 µmhos/cm, 930 umhos/cm and 963 umhos/cm,
<br /> Irespectively, pH values were monitored at 7 17, 7 10 and 7 11, respectively, and temperature values
<br /> at 22 2 °C, 18 7 °C and 19 6 °C, respectively Field monitoring results are summarized in Table 2
<br /> Utilizing a Blue-White Industries F-2000 flaw meter, flow rates were measured and recorded on 15
<br /> October, 07 November and 12 December 2001 at 24 10 GPM,24 60 GPM and 24 58 GPM, between
<br /> 01 October and 03 January 2002, field observations of effluent-flow rates were generally recorded
<br /> between 23 05 GPM and 24 60 GPM (Appendix A)
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<br /> Advanced GeoEavironmental,Inc
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