Laserfiche WebLink
a ter . ` <br /> iElisecc <br /> A C. mg Co piny <br /> I Sample Description <br /> See the attached Sample Description Information. <br /> The samples were received under chain-or-custody. <br /> 1I Analysis Request <br /> The following analytical tests were requested. <br /> Lab ID Analysis_Descript on <br /> 057007-1 thru 3 Total Petroleum Hydrocarbons <br /> Total Petroleum Hydrocarbons (Gasoline) and BTCX <br /> III _Quality Control <br /> A. Project Specific QC. No project specific QC (i.e., spikes and/or <br /> ;f duplicates) was requested. <br /> B. Method Blank Results. A method blank is a laboratory-generated <br /> sample which assesses the degree to which laboratory operations <br /> and procedures cause false-positive analytical results for your <br /> samples. <br /> ; . No target parameters were detected in the method blanks associated <br /> with your samples at the reporting limit levels noted on the <br /> Method Blank Report. <br /> C. Laboratory Control Samples - The ECS Program <br /> Duplicate Control Samples., A DCS is a well-characterized matrix <br /> i, 017r:k water, sand or celite) which is spik:.d with certain target <br /> parameters and analyzed at approximately 10% of the sample load in <br /> order to establish method-specific control limits. The DCS <br /> j results associated with your samples are on the attached Duplicate <br /> Control Sample Report. <br /> a <br /> t ' Accuracy is measured by Percent Recovery as in: <br /> y <br /> % recovery - (measured concentration) x log <br /> (actual concentration) <br /> Precision is measured using duplicate tests by Relative Percent Difference <br /> (RPD) as in: <br /> RPD = f% recovery test I - % recovery_Jest 2 x 100 <br /> {90 recovery test I + % recovery test 2)/2 <br /> t <br /> j <br /> W9 <br /> i <br /> i <br /> i <br /> i <br /> i <br /> ...,E <br />