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C p~j'LAB CORE LABORATORIES <br />Q U A L I T Y A S S U R A N C E M E T H O D S <br />REFERENCE 5 A N D N O T E S <br />Report Oete: 01/21/98 <br /> WATER LIMITS SOIL LIMITS <br /> Recovery RPD Recovery RPO <br />VOLATILE ORGANICS <br />Methods 802)8020 Surrogate <br />B romof luorobenzene 89-110% 78-123% <br />Methods 602/8020 Spike/Spike Duplicate <br />Benzene 39-150% 25 75-125% 25 <br />Ethylbenzene 32-160% 25 60-140% 25 <br />Toluene 46-146% 25 70-130% 25 <br />Xylenes 75-125% 25 bt-139% 25 <br />Method 8015 Mod. SpikefSpike Duplicate <br />TVPH 75-125% 20 48-152% 20 <br />TEPH 54-135% 20 54-135% 20 <br />Nethods 624/8240!8260 Surrogates <br />Dibromof luoromethane 86-118% 80-120% <br />Toluene-(d8) BB-110% 81-117% <br />4-Bromofluorobenzene 86-115% 74-121% <br />Method 524-2 Surrogates <br />4-Bromof Luorobenzene 80-120% <br />1,4-Dichlorobenzene-d4 80-120% <br />Methods 624/8240 Spike/Spike Duplicate <br />1,1-Dichloroethene 61-145% 14 59-172% 22 <br />Trichloroethene 71-120% 14 62-137% 24 <br />Benzene 76-127% 11 66-142% 21 <br />Toluene 76-125% 13 59-139% 21 <br />Chlorobenzene 75-130% 13 60-133% 21 <br />Method 8260 Spike/Spike Dupli cate <br />1,1-Dichloroethene 70-130% 1L 70-130% 22 <br />Trichloroethene 71-120% 14 70-130% 24 <br />Benzene 76-127% 11 70-130% 21 <br />Toluene 76-125% 13 70-130% 21 <br />Chlorobenzene 75-130% 13 70-130% 21 <br />Method 524.2 Spike/Spike Dupl icate <br />1, 1-Dichloroethene BO-120% 14 <br />Trichloroethene 80-120% 14 <br />Benzene 80-120% 11 <br />Toluene 80-120% 13 <br />Chlorobenzene 80-120% 13 <br />PESTICIDES AND PLB'S <br />Methods 608(8080 Surrogates <br />Tetrachloro-m-xylene 60-150% 60-150% <br />4,4'-Dick lorobi phenyl 60-1507. b0-150% <br />Decachlorobi phenyl 60-150% 60-150% <br />Method 8140 SurrogaCes <br />Tri buCyl phosphate 36-152% 36-152% <br />T riphenylphosphate 36-152% 36-152% <br />Page 1 <br /> <br /> <br />