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CASE NARRATIVE <br /> CLIENT: CKY ENVIRONMENTAL SERVICES <br /> PROJECT: TRACY AIRPORT <br /> SDG: 95KO36 <br /> EPA M8015/5030 <br /> GASOLINE <br /> Seven (7) soil samples were received on 11/10/95 to be analyzed for Gasoline by <br /> M8015/5030 analysis in accordance with USEPA SW846 and Leaking Underground <br /> Fuel Tank (LUFT) Field Manual, SWRCB, Dept. of Health Service, CA (1988). <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 except sample K036-07 (124% <br /> recovery). Upon reanalysis, the recovery was within 80-120% range. Both <br /> results are reported. <br /> 4. Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> All recoveries were within QC limits. <br /> 5. Method Blank <br /> Method blanks were free of contamination. <br /> 6. Calibration <br /> Initial was at 5-point and continuing calibration was carried out at 10-sample <br /> interval. All QC requirements were met. <br /> 7. Sample Analysis <br /> All sample analyses were done within QC requirements. All surrogates except <br /> sample mentioned above, 1-CS and MS were within 80-120% recoveries on the <br /> first analysis. <br /> CKY INC., ANALYTICAL LABORATORIES, 630 Maple Ave.,Touance,Calif.90503 Tel.(310)618-8889 Fax:(310)618.0818 <br />