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J) <br /> Centrum <br /> (800) 798-9336 <br /> QC Report - EPA 418.1 (Total Recoverable Petroleum Hydrocarbons) <br /> Matrix: Soil <br /> Batch#: 4181 SO339 <br /> MS/MSD Laboratory Sample ID#: 7435-1 <br /> MS/MSD Client Sample ID#: Not Applicable <br /> LCS(s): Analytical Notes: <br /> C U <br /> Q N N <br /> `0 U U E E <br /> c J J Q <br /> J J <br /> C O U O o U <br /> O >> > C <br /> (� O O O O N (D <br /> N N N U_ > d <br /> d U D_' U <br /> Com ound o o U o O U a_ <br /> cn E o o Qo Of QQ� <br /> Reference Oil 40 100 95 72-131 3 18 <br /> RPD is calculated on the recovery of the laboratory control samples. <br /> MS/MSD: Analytical Notes: <br /> a) The concentration of the sample <br /> o _(n a that was chosen for MS/MSD <br /> `0 co U) E E was too high for the sample to <br /> J o J be useful as a control sample. <br /> o > > C > C: An LCSD was analyzed to <br /> Y a > a provide precision data for the <br /> batch. <br /> Com oundrn E o a Q o Q af <br /> Reference Oil 40 0 0 59-142 10 22 <br /> RPD is calculated on the concentration of the spiked samples. <br /> LCS:Laboratory Control Sample <br /> LCSD:Laboratory Control Sample Duplicate <br /> MS:Matrix Spike <br /> MSD:Matrix Spike Duplicate <br /> RPD: Relative Percent Difference <br /> Page 3 of 29 <br />