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110 2nd Ave South,9137,Pacneco CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//wwwmccarnpbellcom E-mail main@mccampbell c om <br /> QC REPORT <br /> VOCs (EPA 824018260) <br /> Date 01/28/02 Extraction EPA 5030 — Matrix _-Water <br /> Concentration ug/L %Recovery <br /> Compound Amount ---�—I RPD <br /> Sampie MS MSD Spiked MS MSD <br /> SamplelD 20702 Instrument GC-10 <br /> Surrogate i ND 960 950 10000 96 957 10 �E <br /> tert-Amyl Methyl Ether ND 93 9 1 I 1000 93-9_1 W 22 <br /> Methyl tert-Butyl Ether ND 88 87 I; 1000 �88 87 1 1 'I <br /> Ethyl tert-Butyl Ether ND 96 95 1I 1000 ii 96 95 I 1 0 <br /> Di-isopropyi Ether ND 89 89 I 1000 F a 89 0 0 <br /> Toluene _�- - ND 103 101 10 00 103 101 III 2 0 <br /> Benzene € ND 101 100 ! 1000 I 101 100 1 0 <br /> Chforobenzene I ND 109 10 7 I 1000 _ 109 107 1 9 J <br /> Trichloroethene ND 8 3 8 3 I 1000 83 83 E 00 + <br /> 1,1-Dichioroethene ND 9 8 9 7 1000 I 98 97 �j 1 0 <br /> I - <br /> Vo <br /> 1 <br /> Re covery= ilmnuruSplked 100 <br /> ( <br /> RPD <br /> —A&D) <br />' RPD- 2100 <br /> {n�stusD) <br /> RPD means Relative Percent Deviation <br />