ARCHIVED REPORTS XR0001725 - Laserfiche WebLink

Home Browse Search

Enseco " A Commg Company 1._ SamRle Description See the attached Sample Description Information. The sample was received under chain-of-custody. II _ Analysis Reauest The following analytical tests were requested. Lab ID Analysis Description 059184-1 1,2-Dibromoethane (EDB) Total Petroleum Hydrocarbons (Gasoline) and BTEX i Lead III Quality Control A. Project S ecific OC, No project specific QC (i .e. , spikes and/or duplicates) was requested. B. Method Blank Results. A method blank is a laboratory-generated sample which assesses the degree to which laboratory operations and procedures cause false-positive analytical results for your sample. i No target parameters were detected in the method blanks associated with your sample at the reporting limit levels noted on the attached Method Blank Report. C. Laboratory Control Samples - The US Program Duplicate Control Samgl.es. A DCS is a well -characterized matrix (blank water, sand or celite) which is spiked with certain target parameters and analyzed at approximately 107. of the sample load in order to establish method-specific control limits. The DCS results associated with your sample are on the attached Duplicate Control Sample Report. Single Control Samples.. An SCS consists of a control matrix that is spiked with surrogate compounds appropriate to the method being _I used. In cases where no surrogate is available, (e.g. metals or conventional analyses) a single control sample identical to the DCS serves as the control sample. An SCS is prepared for each sample lot. Accuracy is calculated identically to the DCS. The SCS results associated with your sample are on the attached Single Control Sample Report. Accuracy is measured by Percent Recovery as in: • % recovery = (measured concentration) x 100 (actual concentration)