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110 2nd Ave South,#D7,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@mccampbell com <br /> QC REPORT <br /> VOCs (EPA 824018260) <br />' Date 04/05/02 Extraction EPA 5030 _ Matrix Water <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD I Spiked 1 MS MSD <br /> SamplelD 40502 Instrument GC-4 <br /> Surrogate ND 900 890 10000 a 90 89 1 1 — <br /> tent-Amyl Methyl Ether ND 106 106 1000 106 106 00 <br /> Methyl tent-Butyl Ether ND 100 101 1000 100 101 10 <br /> Ethyl tert-Butyl Ether ND 10 0 103 1000 100 103 I 30 <br /> Di-isopropyl Ether ND 10 6 106 i 1000 106 00 I <br /> I <br /> I <br /> n <br /> (A&—Sample <br /> 35 Re covert'= AmozwSprked 100 <br />' RPD— 2100 <br /> (ELLS+AL55'17 <br />