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DEPARTMENT OF TOXIC SUBSTANCES CONTROL * s Hazardous Materials Laboratory Q.C. Summary of Matrix spike Analysis HML SAMPLE NUMBER(S): 960306 COLLECTOR'S NUMBER(S): PL8196 COLLECTOR'S NAME: ALAN K. ITO SAMPLING SITE: P -N -L CONCRETE PRODUCTS 1900 ROSEVELT AVE. ESCALON AUTHORIZATION NUMBER: HMM2966 Analysis for: volatile organic Sample Spiked: HML No. 960306 Matrix: oil compounds Matrix spike QC applicable to the following sample : HML #960306 Note: ND = not detected NA = not analyzed D = detected below quantitation limit. Amount Found = (amount found in spiked sample - amount found in unspiked sample) RPD = Relative Percent Difference = 'RUN 1 - RUN 21 (RUN 1 + RUN 2)/2 r •• Comment: Sample HML 1960306 is an oil sample. The sample was spiked at an equivalent of 450 milligrams per liter. Analyst: Orlando Garbin Supervisor: William Lum Signature: Date: 9/30/96 LL P Signature:. Date: 9/30/96 A:ICP.OWAbWCCP UNSPIKED AMOUNT AMOUNT AMOUNT AVERAGE AVERAGE RPD_ QUAN COMPOUNDS HML No. ADDED FOUND FOUND AMOUNT PERCENT - LIMIT #960306 SPIKE DUPL FOUND RECOVERY (ANALYTES) ************* Units m L m L mgZL m L m L % % m L 1,1-DICHLOROETHENE ND 450 408 418 413 91.8 2.42 45.0 (QC Limits: 59% -155%x) BENZENE ND 450 553 529 541 120 4.44 45.0 (QC LIWa: 37% -151%) TRICHLOROETHENE ND 450 520 506 513 114 2.73 45.0 (QC LJmta: 71% -157%) TOLUENE 124 450 574 542 558 124 5.74 45.0 (QCLimta: 47% -150%) CHLOROBENZENE ND 450 532 510 521 116 4.22 45.0 (QC Umi 37% -160%) Note: ND = not detected NA = not analyzed D = detected below quantitation limit. Amount Found = (amount found in spiked sample - amount found in unspiked sample) RPD = Relative Percent Difference = 'RUN 1 - RUN 21 (RUN 1 + RUN 2)/2 r •• Comment: Sample HML 1960306 is an oil sample. The sample was spiked at an equivalent of 450 milligrams per liter. Analyst: Orlando Garbin Supervisor: William Lum Signature: Date: 9/30/96 LL P Signature:. Date: 9/30/96 A:ICP.OWAbWCCP