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QC Acceptability Limits <br /> QC Check Duplicate Duplicate Water Soil Reagent <br /> Analyte Sample Water Sail Matrix Matrix Water <br /> Recovery Sample Sample Spike Spike Spike <br /> N RPD RPD Recovery Recovery Recovery <br /> % % % % % <br /> Modified EPA 8020: <br /> Benzene 80- 120 30 30 55 - 129 24-127 70-147 <br /> Toluene 80 - 120 30 30 72- 149 17- 124 67-150 <br /> Ethylbenzene 80- 120 30 30 75- 138 19- 129 69-145 <br /> Xylene,total 80- 120 30 30 74- 147 23 - 124 71 -152 <br /> Modified EPA 8015: <br /> Gasoline --- 30 30 --- --- -- <br /> DC Check Duplicate Duplicate Water Soil Reagent <br /> Analyte Sample Water Soil Matrix Matrix Water <br /> Recovery Sample Sample Spike Spike Spike <br /> N RPD RPD Recovery Recovery Recovery <br /> M (ce) M N N <br /> Dlesei --- 30 30 63-127 68- 1" 48-134 <br /> EPA 8010/8020: <br /> Chlorobenzene 80-120 30 — 34-134 58- 126 62-111 <br /> Benzene 80-120 30 — 66- 118 24-127 68-127 <br /> Toluene 80- 120 30 --- 53 - 115 17-124 60-120 <br /> Ethylbenzene 80-120 30 -- 43-131 19-129 68-126 <br /> Xylene,total 80-120 30 — 55-115 23-124 63-128 <br /> 1,1-Dichloroethene 80-120 30 — 30-160 72-116 56-138 <br /> Trichloroethene 80-120 30 — 78-184 79-120 82-187 <br /> EPA 8080: <br /> Heptachlor 80- 120 30 — -- 34- 111 34-111 <br /> Aldrin 80- 120 30 — --- 42- 122 42-122 <br /> DDE 80-120 30 -- --- 30-145 30-145 <br /> Dleldrin 80-120 30 -- -- 36-146 36-146 <br /> Endrin 80-120 30 — -- 30-147 30-147 <br /> DDD 80- 120 30 — --- 31 -141 1 31 -114 <br /> DDT 80- 120 30 --- --- 10-180 10-180 <br /> Arochlor 1260 45- 127 30 -- 53-128 53-128 <br /> GTEL Concord,CA Page t of 3 <br /> March, IM <br /> "�cLsET MGTEL - <br /> HVINONMENTAL <br /> _-LA/ORATORltB INQ <br />