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The laboratory QC consisted of checking adherence to holding times and evaluating method <br /> blanks and matrix spike(MS)results. <br /> .'Holding times-'are establislied'by the`USEPA and refer to the,maximum time allowed to pass <br /> between sample collection and analysis by the laboratory. These limits assist in determining data <br /> validity. The method blank results are used to assess the effect of the laboratory environment on <br /> the analytical results. The MS recoveries are used to assess accuracy of the analytical results. <br /> All analyses were done within the holding times specified by the USEPA.' No'compounds were <br /> detected in the daily method blanks. Recoveries of MS were within the laboratory acceptance <br /> The laboratory QC results indicate that the analytical data are of acceptable 1.T. <br /> , <br /> ♦n �.��r 1 • � ' .• i ,. w+6 .. v �` l-f r J �fi i tr f•., ti� ! <br /> The.material and data in this report,were prepared under the supervision and direction of the <br /> : <br /> undersignedm <br /> EMCON:9 ,� , ►{' .n. <br /> ED G <br /> �ti�,�•� C. Isyo�f <br /> J. .Isham C REIFIED i <br /> Ge to Manager HYDRO <br /> C. .G. OQ7 � J' GEOLOGIST��J�Q' <br /> .Y. -- ■ �' ' � -:rte,. k x .". ..�' _��.� ,, i � . .4 .- � v <br /> ' • s - 4 w • . <br /> SAC\N.\PI{ri0143\01431150.1A5-964pt:4 ' 2 i Rev.0,114196 <br /> 0143-115.01 <br /> L <br />