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BANKS AND GESSO LLC
<br />Client Sample ID: SAMPLE 2
<br />Trace Level Organic Compounds
<br />Lot-Sample #._.: D2 L050322 -002 Work Order #-..: FD9741AA Matrix ...... ...: SOLID
<br />Date Sampled...: 11/15/02 13:56 Date Received..: 11/15/02
<br />Prep Date......: 12/11/02 Analysis Date..: 12/14/02 _
<br />Prep Batch #---: 2345510 Analysis Time..: 14:27
<br />Dilution Factor: 1
<br /> DETECTION
<br />PARAMETER RESULT LIMIT UNITS METHOD
<br />2,3,7,8-TCDD ND 0.32 pg/g SW846 8290
<br />Total TCDD ND 0.32 pg/g SW846 8290
<br />1,2,3,7,6-PeCDD ND 0.69 pg/g SW846 8290
<br />Total PeCDD ND 0.69 pg/g SW846 8290
<br />1,2,3,4,7,8-HxCDD ND 0.51 pg/g SW846 8290
<br />1,2,3,6,7,8-HxCDD ND 0.46 pg/g SW846 8290
<br />1,2,3,7,8,9-HxCDD ND 0.46 pg/g SW846 8290
<br />Total HxCDD ND 0.51 pg/g SW846 8290
<br />1,2,3,4,6,7,8-HpCDD ND 0.67 pg/g SW846 8290
<br />Total HpCDD ND 0.67 pg/g SW846 8290
<br />OCDD ND 3.0 pg/g SW846 8290
<br />2,3,7,8-TCDF ND 0.23 pg/g SW846 8290
<br />Total TCDF ND 0.23 pg/g SW846 8290
<br />1,2,3,7,8-PeCDF ND 0.39 pg/g SW646 8290
<br />2,3,4,7,8-PeCDF ND 0.38 pg/g SW846 8290
<br />Total PeCDF ND 0.39 pg/g SW846 8290
<br />1,2,3,4,7,8-HxCDF ND 0.35 pg/g SW846 8290
<br />1,2,3,6,7,8-HxCDF ND 0.30 pg/g SW846 8290
<br />2,3,4,6,7,8-HxCDF ND 0.35 pg/g SW646 8290
<br />1,2,3,7,8,9-I-IxCDF ND 0.42 pg/g SW846 8290
<br />Total HxCDF ND 0.42 pg/g SW846 8290
<br />1,2,3,4,6,7,8-HpCDF ND 0.44 pg/g SW846 8290
<br />1,2,3,4,7,8,9-HpCDF ND 0.59 pg/g SW846 8290
<br />Total HpCDF ~ ND 0.59 pg/g SW846 6290
<br />OCDF ND 0.75 pg/g SW846 8290
<br /> PERCENT RECOVERY
<br />INTERNAL STANDARDS RECOVERY LIMITS
<br />13C-2,3,7,8-TCDD 65 (40 - 135)
<br />13C-1,2,3,7,8-PeCDD 82 (40 - 135)
<br />13C-1,2,3,6,7,8-HxCDD 65 (40 - 135)
<br />13C-1,2,3,4,6,7,8-HpCDD 64 (40 - 135)
<br />13C-OCDD 61 (40 - 135)
<br />13C-2,3,7,8-TCDF 61 (40 - 135)
<br />13C-1,2,3,7,8-PeCDF 72 (40 - 135)
<br />13C-1,2,3,4,7,8-HxCDF 70 (40 - 135)
<br />13C-1,2,3,4,6,7,8-HpCDF 61 (40 - l35)
<br />8
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