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Er4e o <br /> ] 5 <br /> Description <br /> See the attach¢d Sample Description Information. <br /> The sample was received under chain-¢f-custody.-ft _ <br /> [ al smat <br /> The following analytical test was requested.' <br /> Isis - al s' <br /> Deseription <br /> 053625-1 Total Fetroleum Hydrocarbons,RTEX <br /> jiu it ca tro - - - <br /> A. V gc!5m d fie Dc. Ila project specific qC(I.e., spikes and/or- <br /> dup7icatesJwas requested. _ <br /> e. ^^-thmd B ark Results- A method blank is a-laboratory-generat.d <br /> sample which assesses tin degree;to which laboratory operations .. <br /> and procedure z cause F.1 p. <br /> analytical results for your <br /> sample. <br /> No target parameters were detected In themethod blank assacl ated <br /> with reat thReporlrtir:g limit levels noted on the <br /> attached Method elank <br /> C. abor Co contr - <br /> ..� <br /> - Oumlicate Lantrml samples, A DCS Is well-characterSaed matrix <br /> (61ank water,sand or celite}whichts spiked with certain targ9et <br /> arameters and analyzed at approximately ldh of the sampleSload Sn ` <br /> P ts. Th <br /> e Dc <br /> control 11m1 <br /> s eclPlc : , <br /> :order to establish method p <br /> - .. sasults ssoctated with your sample are on the attached Dupl late <br /> Central Sample Report. - <br /> f <br /> Accuracy 1s measured,6y Percent Recover as W Y <br /> %recoyerY measured contra 'u x 100 <br /> (actual concentration) - <br /> I,eclsin,is measured using duplicate tests by Relative Percent Difference <br /> (Rpo)as in: <br /> RPD= I%rec v t t 1 -%recovery test 21 x Ica <br /> (; ecevery test I t%.recovery test 2 .. _ <br /> tee " <br />