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wY� <br /> f.u! <br /> I <br /> t <br /> If free product is present in a well,a free product sample will be collected in a laboratory cleaned, <br /> teflon bailer, transferred to the appropriate sample container and shipped to a Caiifornia-certified <br /> 1 laboratory for the determination of the type of hydrocarbon product present(i.e„gasoline,kerosene, <br /> diesel, etc.). <br /> 2.0 ANALYTICAL PROCEDURES <br /> tr <br /> All soil samples submitted to the laboratory will be analyzed by EPA Method 524.2/8240 for ethylene <br /> dibromide, 1,2-dichloroethane, benzene, toluene, xylene, ethylbenzene, and total purgeable <br /> petroleum hydrocarbons. All ground water samples submitted to the laboratory will be analyzed by <br /> e EPA Method 524.2/8240 for ethylene dibromide, 1,2-dichloroethane, benzene, toluene, xylene, <br /> ! ethylbenzene, and total purgeable petroleum hydrocarbons. <br /> t k <br /> t , 3.0 QUALITY ASSURANCE PLAN <br /> This section describes the field and analytical procedures to be followed throughout the investigation. <br /> t 3.1 General Sample Collectir2n and Handling Pro duce <br /> t Proper collection and handling are essential to ensure the quality of a sample. Each sample will be <br /> 7 collected in a suitable container, preserved correctly for the intended analyses, and stored prior to <br /> analysis for no longer than. the maximum allowable holding time. Details on the procedure for <br /> collection and handling of soil and ground water samples to be used on this project can be found in <br /> Section 1.0. <br /> G ; <br /> 32 Samplt Idgnlification and Chain-of-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 will have a label affixed to identify the job number, sampler, date and time of sample <br /> collection,and a sampie number unique to that sample. This information,in addition to a description <br /> .•.. of the sample,field measurements made,sampling methodology,names of on-site personnel,and any <br /> other pertinent field observations will be recorded on the borehole log or in the field records. All <br /> samples will be analyzed by a California State-Certified Laboratory. <br /> A chain-of-custody form will be used to record possession of the sample from time of collection to <br /> its arrival at the laboratory. When the samples are shipped,the person in custody of them will relin- <br /> quish the samples by signing the chain-of-custody form and noting the time of shipment. The <br /> __....sample-control officer-will-verify sample integrity and confirm that it-was collected-in the proper <br /> container, preserved correctly,and that there is an adequate volume for analysis. <br /> If these conditions are met, the sample will be assigned a unique log number for identification <br /> throughout analysis and reporting. The log number will be recorded on the chain-of-custody form <br />