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Date: 04, Work Order: o�t-oo � Alpha Analytical, Inc. - QC Summary Report 00092560 Method Blank Test Code: SW8260B Batch ID: MS4W0926A Analysis Date: 09/26/2000 11:07 Sample ID: MBLK MS4W0926A Units: pg1L Run ID: GC/MSD_4 000926 Prep Date: 0912612000 Analyte Result PQL SpkVal SpkRefVal %REC Lowl-imit HighLimit RPD Ref Val %RPD Qua[ S ,rertiary Butyl Alcohol(TBA) ND 10 Methyl tert-butyl ether(MTBE) ND 0.5 Di-isopropyl Ether(DIPE) ND 1 Ethyl Tertiary Butyl Ether(ETRE) ND 1 Benzene ND 0.5 Tertiary Amyl Methyl Ether(TAME) ND 1 Toluene ND 0.5 Ethylbenzene ND 0.5 m,p-Xylene ND 0.5 o-Xylene ND 0.5 Surr: 1,2-Dichloroethane-d4 8.95 10 89 68 139 Surr:Toluene-d8 8,79 10 88 75 127 Surr:4-Bromofluorobenzene 9.5 10 95 73 128 Laboratory Control Spike Test Code: SW8260B Batch ID: MS4W0926A Analysis Date: 09/2612000 21:41 Sample ID: LCS MS4W0926A Units: pg1L Run ID: GCIMSD_4_000926 Prep Date: 09/26/2000 Analyte Result PQL SpkVal SpkRefVal %REC Lowl-imit HighLimit RPD Ref Vat %RPD Qual Methyl tert-butyl ether(MTBE) 7.45 0.5 10 74 70 142 Benzene 10.3 0.5 10 103 76 127 Toluene 9.07 0.5 10 91 76 125 Ethylbenzene 8.71 0.5 10 87 64 132 m,p-Xylene 20.4 0.5 20 102 70 130 o-Xylene 10 0.5 16 100 70 130 Surr: 1,2-Dich loroe than e-d4 8.7 10 87 68 139 Surr:Toluene-d8 8.78 10 88 75 127 Surr:4-Bromofluorobenzene 9.75 10 98 73 128 Sample Matrix Spike Test Code: SW8260B Batch ID: MS4W0926A Analysis Date: 0912612000 22:02 Sample ID: 00092542-02AMS Units: pg1L Run ID: GC/MSD_4_000926 Prep Date: 09126/2000 Analyte Result PQL SpkVai SpkRefVal %REC LowLimit HighLimit RPD Ref Val %RPD Quai Methyl tent-butyl ether(MTBE) 37.1 2.5 50 0 74 70 142 3enzene 50.1 2,5 50 0 100 76 127 Toluene 44.3 2.5 50 0 89 76 125 Ethylbenzene 42.7 2.5 50 0 85 64 132 m,p-Xylene 102 2.5 100 0 102 70 130 o-Xylene 48.9 2.5 50 0 98 70 130 Surr: 1,2-Dichloroethane-d4 45.3 50 91 68 139 Surr:Toluene-d8 44.4 50 89 75 127 Surr 4-Bromofluorobenzene 48.8 50 98 73 128 Sample Matrix Spike Duplicate Test Code: SW8260B Batch ID: MS4W0926A Analysis Date: 09/26/2000 22:23 Sample ID: 00092542-02AMSD Units: pgIL Run ID: GC/MSD_4W000926 Prep Date: 09/26/2000 Analyte Result PQL SpkVal SpkRefVal %REC LowLimit HighLimit RPD Ref Val %RPD Qual Methyl tert-butyl ether(MTBE) 38.3 2.5 50 0 77 70 142 37.05 3.4 Benzene 53.7 2.5 50 0 107 76 127 50.12 6.84 Toluene 46.1 2.5 50 0 92 76 125 44.31 3.98 Ethylbenzene 44.3 2.5 50 0 89 64 132 42.65 3.77 m,p-Xylene 106 2.5 100 0 106 70 130 101.8 4.48 o-Xylene 51.7 2.5 50 0 103 70 130 48.94 5.43 Surr. 1,2-Dichloroethane-d4 46.1 50 92 68 139 Surr:Toluene-d8 43.3 50 87 75 127 Surr.4-Bromofluorobenzene 48.2 50 96 73 128 +'Comments: ND-Not Detected at the Reporting Limit. D-If the spiked value is<25%of the reference value,recovery should not be calculated. S-Spike Recovery outside accepted recovery limits. M-Spike Recovery outside accepted recovery limits due to matrix. B-Analyte detected in the associated Method Blank.