<br />~W~LAB
<br />
<br />CORE LABORATORIES
<br />Q U A L I T Y C O N T R O L R E S U L T S
<br />Job Number: 962453 Date: 09/28/96
<br />CUSTOMER: Greystone PROJECT: 484-03 ATTN: Ray Faci ski
<br />OC Type Description Reag. Code Lab ID Dilution Factor Date Time
<br />Test Method........: EPA 608 Batch........: 13496 Analyst ...: smc
<br />Method Description.: Pesticides/PCBs (Organochlori ne) Units........: ug/L
<br />MB Method Blank 1876 09/17/96 0247
<br />Parameter/Test Description OC Result OC Result Rep. Limit True Value Orig. Value Calc. Result Units
<br />Aldrin ND 0.004
<br />alpha-BHC ND 0.003
<br />beta-BHC ND 0.006
<br />delta-BHC ND 0.009
<br />gamma-BHC (Li ndane) ND 0.004
<br />Chlordane ND 0.014
<br />4,4'-DDD ND 0.011
<br />4,4'-DDE ND 0.004
<br />4,4'-DDT ND 0.012
<br />Die ldrin ND 0.002
<br />Endosulfan I ND 0.014
<br />Endosulfan II ND 0.004
<br />Endosulfan sulfate ND 0.066
<br />Endrin ND 0.006
<br />Endrin aldehyde ND 0.023
<br />Heptachlor ND 0.003
<br />Heptachlor epoxide ND 0.083
<br />MB Method Blank 1876 09/17/96 0316
<br />Parameter/Test Description OC Result OC Result Rep. Li mi[ True Value Ori g, Value Lalc. Result Units
<br />Aldrin ND 0.004
<br />alpha-BHC ND 0.003
<br />beta-BHC ND 0.006
<br />delta-BHC ND 0.009
<br />gamma-BHC (Lindane) ND 0.004
<br />Chlordane ND 0.014
<br />4,4'-DDD ND 0.011
<br />4,4'-DDE ND 0.004
<br />4,4'-DDT ND 0.012
<br />Dieldrin ND 0.002
<br />Endosulfan I ND 0.014
<br />Endosulfan l] ND 0.004
<br />Endosulfan sulfate ND 0.066
<br />Endrin ND 0.006
<br />Endrin aldehyde ND 0.023
<br />Heptachlor ND 0.003
<br />Heptachlor epoxide ND 0.083
<br />Page 28
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