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Alpha Analytical, Inc. <br /> 255 Glendale Ave • Suite 21 • Sparks,Nevada 89431-5778 <br /> (775)355-1044 •(775) 355-0406 FAX • 1-800-283-1183 <br /> Date <br /> 21-May-02 QC Summary Report work Order <br /> 02050620 <br /> Method Blank Type MBLK Test Code SW8260B Batch 1D MSBW0507A <br /> File ID D NHPCHEMNMS081DATAN020507N02050706 D Analysts Date 05/07/2002 12 20 <br /> Sample ID MBLK MSBW0507A Units pg/L Run 1D GCIMSD_8_020507A Prep Date 05/07/2002 <br /> Analyte Result PQL SpkVal SpkRefVal %REC LowLimit Highl-imit RPD Ref Val %RPD Qual <br /> Tertiary Butyl Alcohol(TBA) ND 5 <br /> Methyl tert-butyl ether(MTBE) ND 05 <br /> Di-isopropyl Ether(DIPE) ND 1 <br /> Ethyl Tertiary Butyl Ether(ETRE) ND 1 <br /> Benzene ND 05 <br /> Tertiary Amyl Methyl Ether(TAME) ND 1 <br /> Toluene ND 05 <br /> Ethylbenzene NO 05 <br /> m p-Xylene NO 05 <br /> o-X,rlene NO 05 <br /> Surr 1,2-Dichloroethane-d4 11 10 110 71 130 <br /> Surr Toluene-d8 948 10 95 69 127 <br /> Surr 4-Bromofluorobenzene 11 1 10 111 80 123 <br /> Laboratory Control Spike Type LCS Test Code SW8260B Batch ID MSSWO507A <br /> File ID D NHPCHEM1 MS08NDATAN020507102050703 D Analysis Date 05/07/2002 11 08 <br /> Sample ID LCS MSBW0507A Units pg/L Run ID GCIMSD_8_020507A Prep Date 05/07/2002 <br /> Analyte Result PQL SpkVal SpkRefVal %REC Lowl-imit HighLimit RPD Ref Val %RPD Qual <br /> Benzene 9 57 05 10 96 80 120 <br /> Toluene 866 05 10 87 80 120 <br /> Ethylbenzene 939 05 10 94 80 120 <br /> m p-Xylene 196 05 20 98 73 129 <br /> *- <br /> Xylene 9 61 05 10 96 73 127 <br /> urr 1,2-Dichloroethane-d4 11 10 110 71 130 <br /> Surr Toluene-d8 904 10 90 69 127 <br /> Surr 4-Bromofluorobenzene B 99 10 90 80 123 <br /> Sample Matrix Spike Type MS Test Code SW8260B Batch ID'MSBW0507A <br /> File ID D kHPCHEMIMSOBNDATAkO20507102050708 D Analysis Date 05/07/2002 13 08 <br /> Sample 1D 02050660-01AMS Units pg/L Run 0 GCIMSD_8_020507A Prep Date 0510712002 <br /> Analyte Result PQL SpkVal SpkRefVal %REC Lowl-imit Highl-=t RPD Ref Val %RPD Qual <br /> Benzene 463 1 3 50 0 93 80 120 <br /> Toluene 417 13 50 0 83 80 120 <br /> Ethylbenzene 463 1 3 50 0 93 80 120 <br /> m p-Xylene 956 1 3 100 0 96 73 129 <br /> o-Xylene 466 1 3 50 0 93 73 127 <br /> Surr 1 2-Dichloroethane-d4 54 5 50 109 71 130 <br /> Surr Toluene-d8 456 50 91 69 127 <br /> Surr 4-Bromofluorobenzene 446 50 89 80 123 <br /> Sample Matrix Spike Duplicate Type MSD Test Code 5W82608 Batch ID MSBW0507A <br /> File ID D IHPCHEMNMS08kDATA1020507102050709 D Analysts Date 05/07/2002 13 32 <br /> Sample ID 02050660-01AMSD Units pg/L Run ID GC/MSD-8—020507A Prep Date 0510712002 <br /> Analyte Result PQL SpkVal SpkRfVai %REC Lowl-imit HighLimit RPD Ref VaY %RPD Qua[ <br /> Benzene 466 1 3 50 0 93 80 120 4625 0 668 <br /> Toluene 422 13 50 0 84 80 120 4174 105 <br /> Ethylbenzene 46 1 3 50 0 92 80 120 4635 0 736 <br /> m,p-Xylene 95 13 100 0 95 73 129 9562 064 <br /> o-Xylene 466 13 50 0 93 73 127 4663 00214 <br /> Surr 1 2-Dichloroethane-d4 531 50 106 71 130 <br /> Surr Toluene-d8 459 50 92 69 127 <br /> Surr 4-Bromofluorobenzene 452 50 90 80 123 <br /> omments ND-Not Detected at the Reporting Limit D [f the spiked value is<25%of the reference value,recovery should not be calculated <br /> 5-Spike Recovery outside accepted recovery limits M Spike Recovery outside accepted recovery limits due to matrix <br /> B Analyte detected in the associated Method Blank <br />