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rr 1534 Willow Pass Road, <br />VC am hPp CA 94565-1701 <br />2 n Toll (87 52-926/ Fax: (925) 252-9269 <br />men Qualithttp://www.nrcpbeH.com / E -mal: minacpbell.comy C � <br />QC SUMMARY REPORT FOR SW8021B/8015Bm <br />W.O. Sample Matrix: Soil QC Matrix: Soil BatchlD: 63934 WorkOrder: 1201197 <br />EPA Method: SW8021 B/8015Bm <br />Extraction: SW5030B <br />Spiked Sample ID: <br />1201197-001A <br />Analyte <br />TPH(btex)£ <br />Sample <br />Spiked <br />MS <br />MSD <br />MS -MSD <br />LCS <br />Acceptance Criteria (%) <br />mg/Kg mg/Kg % Rec. % Rec. % RPD % Rec. MS / MSD RPD LCS <br />ND 0.60 123 127 3.31 122 70-130 20 70-130 <br />MTBE <br />ND <br />0.10 <br />112 <br />113 <br />0.777 <br />109 <br />70-130 <br />20 <br />70-130 <br />Benzene <br />ND <br />0.10 <br />108 <br />108 <br />0 <br />107 <br />70-130 <br />20 <br />70-110 <br />Toluene <br />ND <br />0.10 <br />104 <br />104 <br />0 <br />103 <br />70-130 <br />20 <br />70-130 <br />Ethylbenzene <br />ND <br />0.10 <br />104 <br />105 <br />0.634 <br />103 <br />70-130 <br />20 <br />70-130 <br />Xylenes <br />ND <br />0.30 <br />106 <br />105 <br />0.378 <br />106 <br />70-130 <br />20 <br />70-130 <br />%SS: <br />101 <br />0.10 <br />104 <br />115 <br />9.73 <br />107 <br />1 70-130 <br />20 <br />70-130 <br />AA target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: <br />NONE <br />BATCH 63934 SUMMARY <br />Lab ID Date Sampled Date Extracted Date Analyzed Lab ID Date Sampled Date Extracted Date Analyzed <br />1201197-001 A 01/10/12 11:11 AM 01/10/12 01/10/12 10:32 PM <br />MS = Matrix Spike; MSD = Matra Spike Duplicate; LCS = Laboratory Control Sample; LCSD = Laboratory Control Sample Duplicate; RPD = Relative Percent Deviation. <br />% Recovery = 100 ' (MS -Sample) / (Amount Spiked); RPD = 100 ` (MS - MSD) / ((MS + MSD) / 2). <br />MS / MSD spike recoveries and / or %RPD may fall outside of laboratory acceptance criteria due to one or more of the following reasons: a) the sample is inhomogenous AND contains <br />significant concentrations of analyte relative to the amount spiked, or b) the spiked sample's matrix interferes with the spike recovery. <br />£ TPH(btex) = sum of BTEX areas from the FID. <br /># Guttered chromatogram; sample peak coelutes with surrogate peak. ' <br />N/A = not enough sample to perform matrix spike and matrix spike duplicate. <br />NR = matrix interference and/or analyte concentration in sample exceeds spike amount for soil matrix or exceeds 2x spike amount for water matrix or sample diluted due to high matrix <br />or analyte content. <br />DHS FLAP Certification 1644 QA/QC Officer <br />Page 14 of 16 <br />