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1 <br /> pUALITY CONTROL REPORT <br /> CONTINUING CALIBRATION VERIFICATION <br /> ' AEN - California Date 04/06/1998 <br /> 3440 Vincent Rd <br /> ' Pleasant Hill, CA 94523 Job Number 98 00806 <br /> Contact Bill Svoboda <br /> ' Project 9803360 <br /> CCV <br /> ' True Concentration Percent Date <br /> Analyte Concentration Found Recovery Analyzed <br /> ' CA GRO (S} - <br /> CA Gasoline Range Organics 1000 1040 144 0 04/02/1998 <br /> 8020 STEX (S) <br /> Benzene 40 0 39 0 97 5 04/02/1998 <br /> ' Toluene 40 0 37 6 94 0 04/02/1998 <br /> Ethylbenzene 40 0 36 1 90 3 04/02/1998 <br /> Xylenes total 120 112 93 3 04/02/1998 <br /> aaa-Tri fluorctoluene (Burr ) 99 99 100 0 04/02/1998 <br /> CCV - Continuing Calibration Verification <br /> American Environmental Network Inc (503)684-0447 (503)620-0393 FAX <br /> ' 17400 SW Upper Boones Ferry Rd Suite 270, Portland OR 97224 <br />