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Stantec <br /> April 30, 2010 <br /> Page 2 of 3 <br /> Reference: First Quarter 2010 Site Status, Groundwater Monitoring and Remedial Summary Report- <br /> Stockton Terminals Technical Committee Facilities <br /> Appendix C -Stantec Standard Procedures <br /> To help assure the quality of the collected samples and to evaluate the potential for cross <br /> contamination during transport to the laboratory, a distilled-water trip blank accompanies the <br /> samples in the cooler. The trip blank is analyzed for the presence of volatile organic <br /> compounds. For petroleum hydrocarbons, the trip blank is typically analyzed for TPHg, BTEX, <br /> and MTBE by Environmental Protection Agency (EPA) Method 8260. <br /> Containment and Disposal of Generated Water <br /> Purge water generated during the field activities is temporarily stored within a polyethylene tank <br /> kept at the Tesoro Terminal. The purge water is sampled and upon satisfactory analytical <br /> results from the samples, the water is removed from the Site via vacuum tanker truck by an <br /> approved subcontractor. <br /> Related Procedures: <br /> • Standard Procedure for Equipment Decontamination <br />