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Sequoia 680 Chesapeake Drive Red.aod Oty,CA 94063 (415) 364-9600 FAX(415) 364-9333 <br />((f �4) 444 N.Wiget Line Walnut Creek.CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> %07 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 931-9600 FAX(916)921-0100 <br /> .. .::-.:.�::..r.:.:.-:•::.::::.... .....ter:.�.. ...r..v.v: ..:�.xr. --- <br /> _ rra Pacific Groundwater Client Project ID Unocal.. <br /> 4911 Windplay Dr., #4 Matrix: Water <br /> El Dorado Hills, CA 95762 <br /> Attention: John Rapp CC Sample Group 509-0782 Reported: Oct 11 1995 <br /> ::............... .....................................................:.::.:..vim.::.:. -...:::+.v:,�::.r•.vn:•:-.:::: •w::.:::•:::{i..yr3rs:r.:::'::-:::iv.}:"'::.iY4iY.::-}:+.-::: ;:Si.:..:i;:.:::::.;•+:' <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel TKN Nitrate <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M EPA 351.4 EPA 300.0 <br /> Analyst: C. Lee C.Lee C.Lee C.Lee C.Lee Y.Arteaga R.Salinas <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L 300 ug/L 100 mg/L 10 mg/L <br /> LCS Batch#: LCS092795 LCS092795 LCS092T95 LCS092795 LCS091995 LCS092595 LCS092095 <br /> Date Prepared: 9/27/95 9/27/95 9/27/9 9127;95 9/19/95 9/25/95 9/20/95 <br /> Date Analyzed: 9/27/95 9/27/95 9/27/95 9/27/95 9/20/95 9/25/95 9/20/95 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-_ GCHP-2 GCHP-38 Manual IMC-1 <br /> LCS <br /> Recovery: tas 105 105 105 91 95 99 <br /> Control Limits: 75-125 75-125 75-125 75-125 50-130 80-120 86-137 <br /> MS/MSD <br /> Batch #: 5090701 5090701 5090701 5090701 SS091995 9509039-1 5091202 <br /> Date Prepared: 9/27/95 9/27/95 9/27/95 9/27/95 9/19/95 9/25/95 9/20/95 <br /> Date Analyzed: 9/27/95 9/27/95 9/27/95 9/27/95 9/20/95 9/25/95 9/20/95 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-38 Manual INIC-1 <br /> Matrix Spike <br /> % Recovery: 101 99 100 100 91 101 12fi <br /> Matrix Spike <br /> Duplicate <br /> Recovery: 100 97 100 99 90 91 126 <br /> Relative% <br /> Difference: 1.0 3.1 0.0 1.0 1.1 10 0.0 <br /> SEQUOIA ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents. <br /> preparation and analytical methods employed for the samples. The LCS a recovery data is used for <br /> I � <br /> l �L9 -validation of sample batch results. Due to matrix effects,the QC limits for MS/MSD's are advisory only <br /> Janet H an and are not used to accept or reject batch results. <br /> Project onager <br /> 5090782.SSS <6> <br />