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CASE NARRATIVE <br /> CLIENT: URS <br /> PROJECT: WORLD ENTERPRISES <br /> SDG: 06F221 <br /> METHOD 503013/826013 <br /> VOLATILE ORGANICS BY GC/MS <br /> Four(4)water samples were received on 06/20/06 for Volatile Organic analysis by Method <br /> 5030B/826013 in accordance with USEPA SW846, 3rd ed. <br /> 1. Holding Time <br /> Analytical holding time was met. <br /> 2. Tuning and Calibration <br /> Tuning and calibration were carried out at 12-hour interval. All QC requirements <br /> were met. <br /> 3. Method Blank <br /> Method blanks were free of contamination at the reporting limit. <br /> 4. Surrogate Recovery <br /> Recoveries were within QC limit. <br /> 5. Lab Control Sample/Lab Control Sample Duplicate <br /> Recoveries were within QC limit. <br /> 6. Matrix Spike/Matrix Spike Duplicate <br /> No MS/MSD sample was designated in this SDG. <br /> 7. Sample Analysis <br /> Samples were analyzed according to the prescribed QC procedur ps. All criteria <br /> were met. <br /> 200-1 <br />