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<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: Greys tone PROJECT: 484-03 ATTN: Ray Faciski
<br />Method .............: EPA 624 Batch..............: 13400
<br />Method Code........: 624 Analyst ............: tdM
<br />Surrogate Units
<br />4-Bromof luorobenzene ug/L
<br />Lab ID Matrix OC Type Dilution Result
<br />MB 48.72
<br />962453-1 47.81
<br />962453-2 48.64
<br />Surrogate Units
<br />Dibromof luo rometh ane ug/L
<br />Lab ID Matrix OL Tvoe Dilution Result
<br />962453-1 ~ 55.88
<br />962453-2 54.88
<br />Surrogate Units
<br />Toluene-d8 ug/L
<br />Lab ID Matrix OL Type Dilution Result
<br />MB 49.57
<br />962453-1 50.69
<br />962453-2 51.39
<br />True Value Percent Recovery Flag Date Time
<br />50.179 97.1 09/18/96 1019
<br />50.179 95.3 09/18/96 2023
<br />50.179 96.9 09/18/96 2055
<br />True Value Percent Recovery Flag Dale Time
<br />50.219 104.6 09/18/96 1019
<br />50.219 111.3 09/18/96 2023
<br />50.219 109.3 09/18/96 2055
<br />True Value Percent Recovery Flag Date Time
<br />50.204 98.7 09/18/96 1019
<br />50.204 101.0 09/18/96 2023
<br />50.204 102.4 09/18/96 2055
<br />Method .............: EPA 608 Batch..............: 13492
<br />Method Code........: 608 Analyst ............: smc
<br />Surrogate Units
<br />2,4,5,6-Tat rachloro-m-xylene ug/L
<br />Lab ID Matrix OC Type Dilution Result
<br />MB 50 0.0203
<br />962453-1 50 0.0223
<br />962453-2 50 0.0209
<br />Page 32
<br />True Value Percent Recovery Flag Date Time
<br />1.002 101 09/19/96 0850
<br />1.002 111 09f 19196 0948
<br />1.002 104 09/19/96 1046
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