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KIFF <br /> Report Number : 75022 <br /> Analytical LLC Date : 10/26/2010 <br /> Subject : 28 Water Samples <br /> Project Name : Parcel #2A-4Q10 Monitoring and Sampling <br /> Project Number : 211402828.300.250 <br /> Case Narrative <br /> Matrix Spike/Matrix Spike Duplicate results associated with samples MW-56, MW-57, MW-58, <br /> MW-61, MW-63, MW-68, MW-69, QCDUP-6, QCEB-1-RG, QCEB-1-RM, and QCTB-1 for the analytes <br /> Methyl-t-butyl ether and Tert-Butanol were affected by the analyte concentrations already <br /> present in the un-spiked sample. <br /> Matrix Spike/Matrix Spike Duplicate results associated with samples MW-33, MW-34, MW-35, <br /> MW-44, MW-45, QCDUP-2, MW-23, MW-24, MW-25, MW-26, MW-29, MW-30, MW-32, and MW-51 for <br /> the analyte Methyl-t-butyl ether were affected by the analyte concentrations already present <br /> in the un-spiked sample. <br /> Surrogate Recovery for sample MW-63 for test method Mod. EPA 8015 was outside of control <br /> limits. This may indicate a bias in the analysis due to the sample's matrix or an <br /> interference from compounds present in the sample. <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 Page 2 of 139 <br />