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30 July 2004 AGE-NC Project No 96-0232 Page 5 of 16 A bioassay laboratory analysis was performed on the grab sample collected from the effluent stream on 15 June 2004 Six 2,000-m1 dilution volumes consisting of 0%, 6 25%, 25%, 50%, 75% and 100% effluent water to deiomzed water were tested with 20 Fathead minnow fish each, pH, dissolved oxygen (DO) and temperature parameters were monitored and fish mortalities,were counted over 96 hours Temperature measurements generally vaned between 19 4 and 20 8 degrees Celsius (°C), pH measurements generally vaned between 7 60 and 7 90 and DO measurements generally vaned between 7 40 mg/l and 8 90 mg/1 The laboratory reported that there were a total of one fish mortalities after 96 hours in the above referenced sample, laboratory analysis of a duplicate effluent sample reported a zero fish mortalities after 96 hours The laboratory report concluded that there was no sigmficant mortalities observed in the test The bioassay analysis is summarized in Table 3, laboratory reports are in Appendix C Utilizing an 1CM water analyzer in the field, EC values were monitored on all three of the above monthly monitoring events at concentrations between 829µmhos/cm and 976µmhos/em,pH values were monitored at between 7 16 and 7 48, and temperature values were recorded at between 20 8 °C and 23 3 °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 the above dates to be between 20 00 GPM and 25 00 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 on 14 April, 13 May and 15 June 2004 In addition, observations were noted in a log book (Appendix A) of 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 13 May and 14 April 2004 monthly monitoring events because there was no upstream water flow Because there was no upstream 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 20 to 25 GPM Observations logged in a notebook on the above dates Indicated that there was no floating or suspended matter,discoloration,bottom deposits or visible film-sheen-coatings at R-1/R-2,however there was a small amount of algae growth at the bottom of the ditch Visible aquatic life at R-2 included minnows, insects and frogs Potential nuisance conditions observed at R-2 included trash in ditch(I e fast food containers,paper and dry bush cuttings),no potential nuisance conditions were observed at R-1 Advanced CeoEnvironmental,Inc