ARCHIVED REPORTS_PHASE II ENVIRONMENTAL SITE ASSESSMENT

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MCCampbellAnalVtical, Inc. 1534 Willow Pass Road,Pittsburg,CA 94565-1701 Web:www.mccampbell.com E-mail:main@mccampbell.com "When Ouelity Counts" I Telephone,877-252-9262 Fax:925-252-9269 • QC SUMMARY REPORT FOR SW8015C W.O.Sample Matrix: Water QC Matrix: Water WorkOrder: 0805464 EPA Method SW8015C Extraction SW3510C BatchlD:35612 Spiked Sample ID: NIA Analyte Sample Spiked MS MSD MS-MSD LCS _CSD LCS-LCSD Acceptance Criteria(%) pg/L pg/L %Rec. %Rec. %RPD % Rec. %Rec. %RPD MS/MSD RPD LCS/LCSD I RPD TPH-Diesel(C 10-C23) N/A 1000 N/A N/A N/A 121 121 0 N/A I N/A 70- 130 30 %SS: N/A 2500 N/A N/A N/A 117 117 0 N/A 1 N/A 70- 130 30 All target compounds in the Method Blank of this extraction batch were ND less than the method RL with the following exceptions: NONE BATCH 35612 SUMMARY Lab ID Date Sampled Date Extracted Dale Analyzed Lab ID Date Sampled Date Extracted Date Analyzed 0805464-011A 05/16/08 10:45 AM 05/16/08 05/21/08 8:13 AM 0805464-012A 05/16/08 11:15 AM 05/16/08 05/17/08 5:31 PM 0805464-013A 05/16/08 11:30 AM 05/16/08 05/21/08 1:22 AM 0805464-OI4A 05/16/08 11:45 AM 05/16/08 05/17/08 7:44 PM • MS=Matrix Spike;MSD=Matrix Spike Duplicate;LCS=Laboratory Control Sample;LCSD=Laboratory Control Sample Duplicate;RPD=Relative Percent Deviation. %Recovery=100'(MSSample)/(Amount Spiked);RPD=100`(MS- MSD)/((MS+MSD)/2). 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 significant concentrations of analyte relative to the amount spiked,or b)the spiked sample's matrix interferes whh the spike recovery. N/A=not enough sample to perform matrix spike and matrix spike duplicate. NR=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 or analyte content. 42 DHS ELAP Certification No 1644 QA/QC Officer •