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CASE NARRATIVE <br /> CLIENT: CKY ENVIRONMENTAL SERVICES <br /> PROJECT: TRACY AIRPORT <br /> SDG: 95KO36 <br /> EPA 8020 <br /> BTEX <br /> Seven (7) soil samples were received on 11 /10/95 to be analyzed for aromatic volatile <br /> organics (BTEX) by EPA Method 8020 in accordance with USEPA SW846. <br /> 1 . Holding Time <br /> Analytical holding time was met. <br /> 2. Surrogate Recovery <br /> All surrogate recoveries were within QC limits. <br /> 3. Matrix Spike/Matrix Spike Duplicate <br /> All recoveries and RPD were within QC limits. <br /> 4. Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> All recoveries were within QC limits. <br /> 5. Method Blanks <br /> Method blank was free of contamination. <br /> 6. Calibration <br /> Initial calibration was 5 point, continue calibration was at 10 sample interval. <br /> All QC requirements were met. <br /> 7. Sample Analysis <br /> All sample analyses were done within QC requirements. All surrogates, LCS <br /> and MS were within 80-120% recoveries on the first analysis. <br /> 00] <br /> 'i CKY INC.,ANALYTICAL LABORATORIES, 630 Maple Ave.,Tortance,Calif.90503 Tel.(310)618.8889 Fax:(310)618-0818 <br />