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tY '"i" s -' - a a ;Ys..w,c.-. __ _; �_ f_.. ''fir..' �"- <br /> r ? i -`' t<:, '' ry 'rc ifEt•.P�°' gyp,., ��': `.-� a�. .Sr <br /> y` F�'?'<+ <br /> I.tx`.," y SY'rs ;n.:y s <br /> 'firr. 5 k rzr 3 fr s { x r r 1 <br /> ! ij. "`. t .. r •n�2 .L— .-F -_ Ji..Y L x3' f Y---!.d #+-.r <br /> M= <br /> s� ;r <br /> —AS�2G•ti"' �S"� <br /> . e <br /> QUALXTY CONTROL RIEPORTi <br /> s METHOD BLANK RESULTS: A method blank (ma) is a laboratory generated sample free <br /> of any roxntaminatlon. The method blank assessas the degree to which Llle <br /> ;, s F laboratory operations and procedures cause false-positive analytical.results far <br /> your samples. The method blat':k results associated with your samples arc <br /> attached, <br /> LABORATORY CONTROL SPIKES <br /> The LCS Program: - <br /> The laboratory enntrol spike is a well characterized matrix (organic pure <br /> type II for water samples and contamination free Send for soil snraplea) - <br /> whlch is spiked with certain target parameters and analvaed in duplicate <br /> at approxfmataly lOS of the sample load in order to asscro the accuracy <br /> and precision of the analytical method. The results of the laboratory ' <br /> control spike associated with your samples are attached. <br /> Accuracy is measured using percent recovery, i.e.: <br /> (measured concentration) <br /> Percent Accovery, – ........................ .: 100 <br /> (actual concentration) <br /> Precision is measured using the relative pc:rcenC difference.(RPD) from <br /> duplicate ersts, i.e.: <br /> Recovery of Spike,,, - i Recovery of Spike r2) <br /> APD .............................. x 1.0P - <br /> (% Recovery of Spiketr� + 8 Recovery of Spiku,,, )/2 <br /> Control limlts for accuracy and prpcision are different for different: <br /> methods. They may also vary with the dlCferenc—mi-la macrice.a. They arse <br /> �.� based on laboratory average historical data and EYP. limits which are <br /> approved by the quality Assurance Depnrtmet=t- Melaren <br /> Analytical - <br /> '4r_+i�;. Laboratory reanalyzes sajapie; if the preeIsiou or accurate i:: oui of <br /> -- acceptance control limits- <br /> McLaren <br /> .(CN2345) <br /> ZiE REPRODUCTION OF TSS <br /> DOCLMW CANNOT <br /> RE <br /> DWROVIED <br /> J.lLJL:+D E TO . ME <br /> CONDITION OF THE ORIGINAL ' <br />