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a <br /> Ebw <br /> gg <br /> h <br /> G <br /> 0 <br /> C <br /> %Enseco <br /> Test: 504 Water LCS <br /> LCS ID: 504A880307A <br /> Concentration Units: ng/mL <br /> Concentration Accuracy Precision <br /> Measure % Recovery RPD <br /> Parameter eke LCS1 LCS; LCS1 LCS2 Av. Limits LCS Limit <br /> EDB 0.20 0.165 O.i44 83 72 77 NC 14 NC <br /> NC = Not Calculated <br /> Accuracy is measured by Percent Recovery as in: <br /> % recovery measured concentration x 100 <br /> (actual concentration <br /> Precision is measured using duplicate tests by Relative Percent Difference + <br /> (RPD) as.in: <br /> RPD = N recovery_ test 1 % recovery test 2 x 100 <br /> recovery test 1 + % recovery test 2 /2 <br /> £ Control limits for accuracy (percent recovery) are based on the average, <br /> historical percent recovery +/-3 standard deviation units. Control limits <br /> for precision (relative percent difference) range from 0 (iden'tical <br /> duplicate LCS results) to the average, historical relative percent <br /> difference + 3 standard deviation units. These control 11mits .ire updated <br /> on a quarterly basis. <br /> ;y <br /> IV Analysis Results <br /> i <br /> M Test methods prefaced by "Enseco" indicate that minor modifications of <br /> published EPA Methods were made such as reporting limits or parameter <br /> lists. . Reporting limits are adjusted to reflect dilution of the sample, <br /> Z when appropriate. Solid and waste samples are reported on an "as received" <br /> basis; i.e.,. no correction is made for moisture content. All data. is <br /> "blank corrected" by subtracting the level of contamination, if any, found <br /> ,E in the labcratory method blank from the analytical result before it is <br /> reported. <br /> � Results-are-on the-attached-data-sheets: -- - - <br /> f <br /> .ks, - <br /> .....,e _.. _ .. <br />