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• I Alton Aye.,Irvine,CA 92606 (949)261-1022 FAX(949)261-1228 C 1014 E C.a..i Suite A,Colton CA 92324 (909)370-4667 FAX(909)370-1046 Del Mar Analytical 16525 Sherman Way,Suite C 11,Van Nuys,CA 91406 (818)779-1844 FAX(818)779-1843 9484 Chesapeake Dr.,Suite 805,San Diego,CA 92123 (619)505-9596 FAX(619)505-9689 2465 W 12th St,Suite 1,Tempe,AZ 85281 (602)968-8272 FAX(602)968-1338 MS/MSD DATA REPORT EPA METHOD: 5260 Matrix: Soil Date Analyzed: 11/14/98 Sample: HKO1708 Batch: HK14091S MEAN Acceptance Analyte R1 Sp MS MSD PR1 PR2 RPD PR Limits ppb ppb ppb ppb % % % % RPD MPR Vinyl Chloride 0 25 18 18 72% 1 72% 0% 72°/a 30 30-160 1,1-Dichloroethene 0 25 23 23 92% 92% 0% 92% 40 45-165 MTBE 0.4 25 27 27 106% 106% 0% 106% 40 55-155 1,1-Dichloroethane 0 25 24 24 96% 96% 0% 96% 20 55-150 Chloroform 0 25 24 24 96% 96% 0% 96% 20 65-140 1,2-Dichloroethane 0.1 25 24 24 96% 96% 0% 96% 30 55-145 Benzene 0 25 1 23 23 92% 92% 0% 92% 25 60-140 Trichloroethene 0 25 22 23 88% 92% 4.4% 90% 30 60-145 Toluene 0 25 23 23 92% 92% 0% 92% 20 65-140 Tetrachloroethene 0 25 23 23 92% 92% 0% 92% 50 10-200 Chlorobenzene 0 25 23 24 92% 96% 4.3% 94% 20 70-135 Ethylbenzene 0 25 24 25 96% 100% 4.1% 98% 20 70-140 m,p-Xylenes 0 50 48 49 96% 98% 2.1°/a 97°/p 20 40-160 o-Xylene 0 25 24 24 96% 96% 0°/a 96% 20 65-150 Definition of Terms: R1. . . . . . . . . . . . . . . . . . . Result of Sample Analysis Sp. . . . . . . . . . . . . . . . . . . Spike Concentration Added to Sample MS. . . . . . . . . . . . . . . . . . Matrix Spike Result MSD. . . . . . . . . . . . . . . . . Matrix Spike Duplicate Result PR1. . . . . . . . . . . . . . . . . Percent Recovery of MS, ((MS-R1)/SP) X 100 PR2. . . . . . . . . . . . . . . . . Percent Recovery of MSD, ((MSD-R1)/SP)X 100 RPD. . . . . . . . . . . . . . . . . Relative Percent Difference, ((MS-MSD)/(MS+MSD)/2) X 100 Acceptance Limits. . . . . Statistically determined on an annual basis. DEL MAR ANALYTICAL