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ENVIRONMENTAL ! L <br /> CHEMICAL ANALYSIS 00- LABORATORIES, INC. <br /> PETROLEUM J.J.EGLIN,REG.CHEM.ENGR. <br /> 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327.4911 <br /> BT','/'TPH DIESEL <br /> Quality Control Data <br /> Water Work BTX Spike ID: 4028-1 <br /> 1710 Main Street TPH Spike ID: 4027-1 <br /> Escalon, CA 95320 Analysis Date: 11-May-90 <br /> Attention : John Giorgi Matrix: soil <br /> Quality Control Units: ug/g <br /> for Lab Nos : 4033-5 , 4033- . <br /> One sample in twenty is selected as a representative matrix which is <br /> spiked. The percentage recover,,., ( '- Rec) or the spike is a relative <br /> measure of the accuracy of the analysis . The comparison of the spike <br /> with a duplicate spike is a :7easure or the relative precision of the <br /> analysis. <br /> Dup <br /> Spike Spike Spike <br /> Constituent Rec Rec RPD <br /> - -------------------------------------------------------------------- <br /> Benzene 37 . 69 86. 65 1. 19 <br /> Toluene 90 . 70 87 . 33 3 . 79 <br /> Ethyl Benzene 34 . 70 85. 75 1. 23 <br /> TPH Diesel 98 . 00 88 . 00 10 . 75 <br /> QC Comments: <br />