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A-4 <br /> 2,0 QUALITY ASSURANCE PLAN <br /> This section describes the field and analytical procedures that were followed throughout the investigation <br />' 2.1 General Sample Collection and Handling Procedures <br /> Proper collection and handling are essential to ensure the quality of a sample Soil samples were <br /> collected in brass tubes, sealed and stored on ice to approximately 4°C and sent to the laboratory for <br /> chemical analysis The soil samples were not analyzed within the recommended holding times for BTEX <br /> and TPH as gasoline due to a laboratory login error The analyses of these soil samples were performed <br /> 2 days outside the recommended EPA holding time A cover letter from the laboratory is included with <br /> the data provided in Appendix C <br />' Ground water samples were placed in 40-milliliter glass vials with teflon-lined septum caps The ground <br /> water samples were analyzed within the recommended holding times for BTEX and TPH as gasoline <br />' Details on the procedure for collection and handling of soil and ground water samples used on this project <br /> can be found in Appendix A, Section I 0 <br /> 2.2-Sample Identification and Chain-or-Custody Procedures <br />' Sample identification and chain-of-custody procedures ensure sample integrity and document sample <br /> possession from the time of collection to its ultimate disposal Each sample container submitted for <br /> analysis had a label affixed to identify the job number, sampler, date and time of sample collection, and <br /> a sample number unique to that sample This information, in addition to a description of the sample, <br />' field measurements made, sampling methodology, names of on-site personnel, and any other pertinent <br /> field observations were recorded on the borehole log or in the field records All samples were analyzed <br /> by Pace Incorporated Laboratories, located in Novato, California <br />' A chain-of-custody form was used to record possession of the sample from trine of collection to its arrival <br /> at the laboratory, and a strip of chain of custody tape was dated, signed, and placed across the cooler <br /> where the lid and body of the ice chest come together The sample-control officer at the laboratory <br /> verified sample integrity and confirmed that it was collected in the proper container, preserved correctly, <br /> and that there was an adequate volume for analyses <br /> RJPTl 12 JDM <br />