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Enseco=_-- <br /> A Corning Company <br /> . am le Description <br /> See the attached Sample Description Information. <br /> i <br /> The samples were received under chain-of-custody. <br /> II _ Analysis Request <br /> r <br /> The following analytical tests were requested. <br /> Lab ID Analysis Description <br /> 059348-0001 Total Petroleum Hydrocarbons (Diesel Fuel) <br /> Total Petroleum Hydrocarbons (Gasoline) and BTEX <br /> 1 Halogenated Volatile Organics <br /> PCBs in Soil <br /> Total Petroleum Hydrocarbons, Gravimetric <br /> Cadmium, Chromium, Lead, Zinc <br /> Chromium, Hexavalent <br /> 1 <br /> III Quality Control <br /> A. Project Specific QC. No project specific QC (i .e. , spikes and/or <br /> • 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 /> attached Method Blank Report. <br /> C. Laboratory Control Samples - The US Pro ram <br /> Duplicate Control Samples_. A DCS is a well-characterized matrix <br /> 1 (blank water, sand or celite) which is spiked 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 /> ---- results associated with your samples are .on the attached Duplicate, _ <br /> Control Sample Report. <br /> i <br /> Single Control Samples. An SCS consists of a control matrix that <br /> is spiked with surrogate compounds appropriate to the method being <br /> used. In cases where no surrogate is available, (e.g. metals or <br /> conventional analyses) a single control sample identical to the <br /> DCS serves as the control sample. An SCS is prepared for each <br /> sample lot. Accuracy is calculated identically to the DCS. The <br /> . SGS results associated with your samples are on the attached <br /> Single Control Sample Report. <br /> r <br />