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KIFF <br /> REGEIVE'Uport Number : 81637 <br /> Analytical LLC 0 FEB 16 2016 Date : 06/29/2012 <br /> Subject : 4 Soil Samples ENVIRONMENTAL <br /> Project Name : Tesoro Stockton Terminal }.aFAITP nCDAPTTAr-h" <br /> Project Number : 185702499.200.0007 <br /> Case Narrative <br /> All soil samples were reported on a total weight (wet weight) basis. <br /> Matrix Spike/Matrix Spike Duplicate results associated with samples Tank-1 Composite-1(A,B,C„ Tank-2 <br /> Composite-1(A,B,C„ Tank-1 Composite-2(A,B,C„ and Tank-2 Composite-2(A,B,C, for the analytes <br /> Antimony, Arsenic, Barium, and Molybdenum were outside of control limits. This may indicate a bias for <br /> the sample that was spiked. Since the LCS recoveries were within control limits, no data are flagged. <br /> Matrix Spike/Matrix Spike Duplicate results associated with samples Tank-1 Composite-1(A,B,C„ Tank-2 <br /> Composite-1(A,B,C„ Tank-1 Composite-2(A,B,C„ and Tank-2 Composite-2(A,B,C, for the analyte <br /> Bromoform were outside of control limits. This may indicate a bias for the sample that was spiked. Since <br /> the LCS recoveries were within control limits, no data are flagged. <br /> LCS results associated with samples Tank-1 Composite-1(A,B,C„ Tank-2 Composite-1(A,B,C„ Tank-1 <br /> Composite-2(A,B,C„ and Tank-2 Composite-2(A,B,C, for the analyte Bromoform were outside of control <br /> limits, indicating a possible high bias for this analyte. Since Bromoform was not detected above the <br /> Method Reporting Limit in the associated samples, no data are flagged. <br /> Surrogate Recovery for sample Tank-2 Com for test method Mod. EPA 8015 was outside of control limits. <br /> This may indicate a bias in the analysis due to the sample's matrix or an interference from compounds <br /> present in the sample. <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 Page 2 of 32 <br />