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WRE~1
<br />CORE LABORATORIES
<br />DUAL I T Y C O N T R O L R E P O R T
<br />Job Nunber: 960720 Report Date: 04/02/96
<br />CUSTOMER: Greystone PROJECT: ATTN: Jeff Spinxig
<br />DC Type Description Reeg. Code Lab SD Dilution Factor Date Time
<br />58 Spiked Blank H9510168 03/27/96 2359
<br />Test Description OC Result Det. Limit True Value Orig. Value Alt, Value Calc Resul[
<br />2,4, 5-TP (Silvex) 77.47 0.17 100.0 X REC 77.5
<br />SB Spiked Blank X9510168 03728!96 1224
<br />Test Description OC Result Det. Limit True Value Orig. Value Aft. Value Calc Result
<br />2,4-D 161.03 1.2 100.0 X REC 161.0
<br />2,4,5-T 75.15 0.20 100.0 X REC 75.2
<br />2,4,5-TP (Silvex) 76.05 0.17 100.0 X REC 76.0
<br />SBD Spiked Blank Duplicate H951016B 03/28/96 0028
<br />Test Description OC Result Det. Limit True Yalue Orig. Value Alt. Value Calc Resul[
<br />2,4-D 119.54 1.2 100.0 156.90 % REC 119.5
<br /> RPD 27.0
<br />2,4,5-T 65.39 0.20 100.0 70.99 X REC 65.4
<br /> RPD 8.2
<br />2,4,5-TP (Silvex) 80.88 0.17 100.0 77.47 X REC 80.9
<br /> RPD 4.3
<br />SBD Spiked Blank Duplicate H9510168
<br />_ _ 03/28/96 1254
<br />i
<br />lest Description DC Result Det. limit True Value Orig. Value Alt. Value Calc Result
<br />2,4-D 138.21 1.2 100.0 161,03 X REC 138.2
<br /> RPD 15,3
<br />2,4,5-T 64.98 0.20 100.0 75.15 % REC 65.0
<br /> RPD 14.5
<br />2,4,5-TP (Silvex) 85.55 0.17 100.0 76,05 X REC 85.5
<br /> RPD 11,8
<br />Method ............: EPA 400,0 Batch........: 7528 AnalYSt ...: • ca
<br />Method Description.: Gross alphalbeca Units........: pCi/L
<br />MS Matrix Spike M51AB 960572-4 03!26!46 1732
<br />Test Description OC Resul[ Det. Limit True Value Orig. Value Alt. Value Ca Lt Result
<br />Gross al phe 130 0 128 3.7 % REC 98.7
<br />Gross beta 134 0 110 5.6 % REC 116.7
<br />Page 40
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