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_n �-: 5:^{f'_r:� fir,.. e..'�a-,:d_:w+.ti7•d' . .•:�c., t�:.". <br /> >.iT'k`^.,y'Ir 7, L s .:'.F. Yh u-.. „�r.sAL..�� 1iu.'f7 -�'" � '.y�J n t�.M.,,y,�.:'ti"l'�"t `1, <br /> ,xi. M3 �.i '+� rv. k r, `ir,r� `! 'G -�i" '."'''7.;.k'i "` 1 '!" 1 r �.a' y`''i.'�r' •rte a, <br /> w`a s.'. ':i, <br /> � r h � <br /> yC - R <br /> i <br /> .,Enseco ; <br /> i I sample Description <br /> + <br /> see the attached Sample Description Information. <br /> The samples were received under chain-of-custody. <br /> 11 Analysis Re ue <br /> The following analytical test was requested. <br /> v IA-W Anal Ys i-. PE iM <br /> 058125-1 thru 8 Total Petroleum Hydrocarbons <br /> � uality C tr_41 <br /> A. project Specific�C., No project specific QC (i.e., sp kes and/or <br /> duplicates)eras requested. <br /> B. Hethod E1 ante Rast�Lt� A method bl ank i s a 1 aboratory-generated <br /> simple which assesses the dQyree to which laboratory operatYons <br /> and procedures cause false-positive analytical results fcr your <br /> samples. <br /> No target parameters were detected in the method blanks associated <br /> Faith your samples at the reporting limit levels noted on tie <br /> attached Method Blank Report. <br /> C. �bkv atur.]Co.trnl Sam e - h CS o <br /> bulicate fantre Sam less A DCS is a well-characterized matrix <br /> (bl,inic water, sand or celite) roximatelY 10%hich is dofithe th csample loaertain d <br /> parameters and analyzed at apporder y <br /> imis. The DCS <br /> r�esultsoassociated with establish oyour esamples cific oare oonithetattached Duplicate <br /> Control Sample Report. <br /> i <br /> Accuracy is measured by rercent Recovery as in. <br /> recovery m su d can e t a x ILl0 <br /> ,. (actual concentration) <br /> 4=i Precision is measured using duplicate tests by Relative Percent Difference <br /> (RPD) as in: <br /> RFD - % recov r es 1 - % rec v r t x 100 <br /> (% recovery test 1 + 7- recovery test 0/2 <br /> ''Pk <br /> "A <br /> 111111�' ' <br />