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SOIL SAMPLE VALIDATION INFORMATION <br /> Calscience Work Number: 08-07-1204 <br /> Sample: A3-2-1 <br /> Collection Date: July 11, 2008 <br /> Polynuclear Aromatic Hydrocarbons—EPA Method 8310 <br /> Holding Times <br /> Soil samples have a 14-day analysis holding time requirement. The sample labeled A3-2- <br /> 1 was analyzed within this time period. <br /> Blanks <br /> The method blank was analyzed with the sample and was contaminate free. <br /> Sensitivity <br /> The sample A3-2-1 was diluted by a factor of 10. The RLs were adjusted by this factor. <br /> Surrogate Spike Recovery <br /> The sample and control samples were spiked with Decafluorobiphenyl prior to analysis. <br /> The surrogate percent recoveries were within the control limit range of the 40-160 % <br /> which indicated that compounds of interest were retained during the analysis procedure <br /> for the sample. <br /> Matrix Spike/Matrix Spike Duplicate <br /> The MS/MSD were analyzed with the samples in the batch. The Laboratory QC indicated <br /> the MS and MSD %recoveries and the RPDs %recoveries were within the control limits. <br /> Laboratory Control Sample <br /> The percent recoveries of Laboratory Control Sample for all compounds were within the <br /> control limits as stated by Calscience. The LCS samples were analyzed with the same <br /> batch as the sample. <br /> Gasoline for Soil Modified EPA Method M 8015G <br /> Holding Times <br /> The holding time for the analysis is fourteen days for soil. The sample was analyzed <br /> within this time period meeting this requirement. <br /> Method Blanks <br /> The method blank was analyzed with the sample and no contamination was detected. <br /> Sensitivity <br /> No dilutions were necessary for the A3-2-1 sample and therefore the RL was met. <br /> 11 <br />