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110 2nd Ave South,#137,Pacheco,CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> h //www mccam bell com E-mail main 'cam bell com <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 04/12/02 Extraction EPA 5030 Matrix Water <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> SampielD 11202 Instrument GC-4 <br /> Surrogate ND 1090 107 0 10000 109 107 11 19 <br /> Methyl tert-Butyl Ether ND 110 log <br /> 1000 110 109 0 9 <br /> MS—Sample) <br /> 9b Recovery= Amoundpiked 100 <br /> RD=(A&—MSD) 2100 <br /> (AC+MRD) <br />