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A <br /> FFCJ__� �-//EF-4ondor Earth Technologies, Inc. <br /> CONDOR* APR Y 6 2005 21663 Baan Lane,Sonora,CA 95370 (209)532-0361 <br /> 188 Frank West Circle, Suite I,Stockton, CA 95206 (209)234-0518 <br /> v <br /> PERMIT/SERVICES <br /> April 11, 2005 Condor Project No 1707 C <br /> MONTHLY TREATED WATER DISCHARGE SELF-MONITORING REPORT-- <br /> MARCH 2005 <br /> CANEPA'S CARWASH, 6230 PACIFIC AVE., STOCKTON, CALIFORNIA <br /> MARCH 2005 DISCHARGE SAMPLING <br /> This is a report of the results of the final discharge sampling and monitoring events conducted by Condor <br /> Earth Technologies, Inc (Condor) on March 1, 2005, at the Canepa's Car Wash site The equipment <br /> began operation and discharge on November 1, 2004 Report attachments include laboratory analytical <br /> reports for March (Attachment A) <br /> The final discharge point was sampled at the above-referenced site to evaluate treated water quality being <br /> discharged to the sanitary sewer system after treatment through an air-stripper/activated carbon series <br /> The mid-tank sampling point was sampled to evaluate treated water quality being discharged from the <br /> • first carbon tank into the second carbon tank Laboratory analytical results from the treated groundwater <br /> sample are to be used to monitor and verify groundwater discharge quality and operational efficiency of <br /> the treatment equipment <br /> OPERATIONAL PARAMETERS <br /> Table 1• Flow and Lower Explosive Limit Field Parameters <br /> Rate of Flow <br /> Date Time Temp PH Total Flow (daily gallons %LEL ° LEL <br /> (°C) (field) (gallons) (hexane) (10%exceeded) <br /> average) <br /> 9130/2004* 1400 688 964 350* 00 00 None <br /> 10/3112004* 1200 NM NM 350* 0 0 00 None <br /> 11/1/2004 1400 NM NM 350* 00 -01 None <br /> 11/30/2004 1400 NM 950 107,308 3,577 +01 None <br /> 12/31/2004 1400 NM NM 152,581 1,460 +14 None <br /> 1/31/2005 r15 30 2053 7 71 193,015 1,304 -27 None <br /> 2/28/2005 17 00 NM NM 293,456 35587 -1 6 None <br /> 3/l/2005 1600 NM NM 299,216 5,760 -0 9 None <br /> °C=degrees Centigrade NM=Not Measured <br /> ' total flow through the mline flow meter was placed alto the storage tank as of this dale and was not discharged <br />