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<br />W~
<br />
<br />CORE LABORATORIES
<br />S U R R O G A T E R E C O V E R I E S R E P O R T
<br />Job Number.: 962453 Report Date: 09/28/96
<br />CUSTOMER: Greystone PROJECT: 484-03 ATTN: Ray Faci ski
<br />Surrogate Units
<br />4,4'-Dichlorobi phenyl ug/L
<br />Lab ID Matrix OC Type Dilution Result
<br />MB 50 0.0248
<br />962453-1 50 0.0253
<br />962453-2 50 0.0241
<br />True Value
<br />1.002
<br />1.002
<br />1.002
<br />Percent Recovery Flag Date Time
<br />124 09!14!96 0850
<br />126 09/19/96 0948
<br />120 09/19/96 1046
<br />Method .............: EPA 608 Batch..............: 13496
<br />Method Lode........: 608 Analyst ............: smc
<br />Surrogate Units
<br />2,4,5,6-Tat rachloro-m-xylene ug/L
<br />Lab ID Matrix OL Type Dilution Result
<br />MB 10 92.82
<br />962453-1 10 111.10
<br />962453-2 10 96.42
<br />Surrogate Units
<br />4,4'-D ichlorobiphenyl ug/L
<br />True Value Percent Recovery Flag Dale Time
<br />1002 93 09/17/96 0247
<br />1002 111 09(17(96 0346
<br />1002 96 09/17/96 0444
<br />
<br />Lab ID Matrix OC Type Dilution Result True Value Percent Recovery Flag Date Time
<br /> MB 10 114.50 1002 114 09/17/96 0247
<br />962453-1 10 128.92 1002 129 09/17/96 0346
<br />962453-2 10 111.04 1002 111 09/17/96 0444
<br />Method .............: EPA 608 Batch..............: 13500
<br />Method Lode........: 608 AnaLyst ............: smc
<br />Surrogate Units
<br />2,4,5,6-Tetrachloro-m-xylene ug/L
<br />Lab ID Matrix 0C Type Dilution Result
<br />MB 10 99.15
<br />962453-1 10 116.96
<br />962453-2 10 102.33
<br />True Value Percent Recovery Flag Date Time
<br />1002 99 09/18/96 0204
<br />1002 117 09/18/96 1502
<br />1002 102 04/18/46 1600
<br />Page 33
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