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' 2852 Alton Ave Irvsne CA 92606 (949)261 1022 FAX(949)261 12 1014 E Cooley Or Suite A Colton CA 92324 (909)370 4667 FAX(909)370-1 C Def MarRnaficaf 16525 Sherman Way Suite C 11 Van Nuys CA 91406 (818)779 1844 FAX(818)779 18 ' 9484 Chesapeake Or Suite 805 San Diego CA 92123 (619)505.9596 FAX(619)505 96 2465 W 121h St Suite 1 Tempe AZ 85281 (602)968 8272 FAX(602)968 13 MS/MSD DATA REPORT ' EPA METHOD 8260 Matrix Soil Date Analyzed 11/28/98 Sample- HK03350 ' Batch HK280715 MEAN Acceptance Analyte R1 Sp MS MSD PRI PR2 RPD PR Limits ' ppb Ppb Ppb ppb % % % % RPD MPR ' Vinyl Chloride L 0 25 17 16 68% 64% 61% 66% 30 30-160 1,1-Dichloroethene 0 25 20 21 80% 84% 49% 82% 40 45-165 MTBE 30 25 21 26 72% 92% 21% 82% 40 55-155 ' 1,1-Dichloroethane 0 25 19 21 76% 84% 10% 80% 20 55-150 Chloroform 0 25 19 1 20 76% 80% 1 51% 78% 20 65-140 1,2-Dichloroethane 01 25 18 20 72% 80% 11% 76% 30 55-145 ' Benzene 0 25 20 21 80% 84% 49% 82% 25 60-140 Trichloroethene 05 25 37 32 146% 126% 14% 136% 30 60-145 ' Toluene 02 25 20 21 79% 83% 49% 81% 20 65-140 Tetrachloroethene 01 25 22 23 88% 92% 44% 90% 50 10-200 Chlorobenzene 0 25 20 22 80% 88% 95% 84% 20 70-135 ' Ethylbenzene 0 25 20 21 80% 84% 49% 82% 20 70-140 m,p-Xylenes 02 50 42 44 84% 88% 47% 86% 20 40-160 o-Xylene 0 25 20 22 80% 88% 95% 84% 20 65-150 I Definition of Terms. R1. . . . . . . . . . . . . . Result of Sample Analysis Sp . . . . . . . . . . . . . . . . Spike Concentration Added to Sample MS . . . . . . . . . . . . . . Matrix Spike Result I MSD . . . . . . . . . . . . . Matrix Spike Duplicate Result PRI. • . . . . . . . . . . Percent Recovery of MS, ((MS-R1)1 SP)X 100 PR2. . . . . . . Percent Recovery of MSD, ((MSD-R1)/SP)X 100 I RPD. . . . . . . . . . . . . . . Relative Percent Difference, ((MS-MSD)/(MS+MSD)12)X 100 Acceptance Limits. . . . . Statistically determined on an annual basis DEL MAR ANALYTICAL