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y Condor Earth Technologies, Inc. CONDOR* 21663 Brian Lane, Sonora,CA 95370(209)532-0361 188 Frank WesfofRuj%1,gc to A 95206(209)234-0518 SAN l0AC1U€t4 COUNTY ENVIRONMENTAL March 13, 2005 HEALTH DEF'ARTFtWdor Project No 1707 C MONTHLY TREATED WATER DISCHARGE SELF-MONITORING REPORT- FEBRUARY 2005 CANEPA'S CARWASH, 6230 PACIFIC AVE , STOCKTON, CALIFORNIA FEBRUARY 2005 DISCHARGE SAMPLING This is a report of the results of the final discharge sampling and monitoring events conducted by Condor Earth Technologies, Inc (Condor) on February 16, 2005, at the Canepa's Car Wash site The equipment began operation and discharge on November 1, 2004 Report attachments include laboratory analytical reports for February (Attachment A) The final discharge point was sampled at the above-referenced site to evaluate treated water quality being discharged to the sanitary sewer system after treatment through an air-stripper/activated carbon series Laboratory analytical results from the treated groundwater sample will be used to monitor and verify groundwater discharge quality and operational efficiency of the treatment equipment OPERATIONAL PARAMETERS i Table 1 Flow and Lower Explosive Limit Field Parameters Temp PH Total Flow Rate of Flow % LEL LEL Date Time (°C) (field) (gallons) (daily gallons (hexane) (10% exceeded) average) 913012004* 1400 6 88 964 350* 0 0 00 None I 1013112004* 1200 NM NM 350* 0 0 00 None 11/1/2004 1400 NM NM 350* 0 0 -01 None 11/30/2004 1400 NM 950 107,308 3,577 +01 None 12/31/2004 1400 NM NM 152,581 1,460 +14 None 1/31/2005 15 30 2053 771 193,015 1,304 -2 7 None 2/28/2005 1700 NM NM 293,456 3,587 -16 None °C=degrees Centigrade NM=Not Measured * total flow through the mlinc flow meter was placed into the storage tank as of this datc and was not discharged 1 CONDOR ,