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kA . laboratory for the determination of the type of hydrocarbon product present(i.e.,gasoline,kerosene, diesel,etc.). 2.0 ANALYTICAL PROCEDURES All soil samples submitted to the laboratory will be analyzed by EPA Method 524.2/8240 for ethylene dibromide, 1,2-dichloroethane, benzene, toluene, xylene, ethylbenzene, and total purgeable petroleum hydrocarbons. All ground water samples submitted to the laboratory will be analyzed by EPA Method 524.2/8240 for ethylene dibromide, 1,2-dichloroethane, benzene, toluene, xylene, ethylbenzene, and total purgeable petroleum hydrocarbons. 3.0 QUALITY ASSURANCE PLAN This section describes the field and analytical procedures to be followed throughout the investigation.. 1.1 General Sample Collection and Handling Proc de ures Proper collection and handling are essential to ensure the quality of a sample. Each sample will be collected in a suitable container, preserved correctly for the intended analyses, and stored prior to r analysis for no longer than the maximum allowable holding time. Details on the procedure for a collection and handling of soil and ground water samples to be used on this project can be found in Section 1.0. 3.2_Sample Identification and Chain-of-Custo_&Procedures r Sample identification and chain-of-custody procedures ensure sample integrity and document sample I� possession from the time :,f collection to its ultimate disposal. Each sample container submitted for analysis will have a label affixed to identify the job number, sampler, date and time of sample f collection,and a sample number unique to that sample. This information,in addition to a description t of the sample,field measurements made,sampling methodology,names of on-site personnel,and any other pertinent field observations will be recorded on the borehole log or in the field records. All n samples will be analyzed by a California State-Certified Laboratory. i� Y Y• t•.g A chain-of-custody form will be used to record possession of the sample from time of collection to its arrival at the laboratory. When the samples are shipped,the person in custody of them will refin- y quish the samples by signing the chain-of-custody form and noting the time of shipment. The t sample-control officer will verify sample integrity and confirm that it was collected in the proper i , container, preserved correctly,and that there is an adequate volume for analysis, f_these-.conditions-are_met,.-the.-sample__wil l_be_assigned_a__unique_log_number-.for_identificntion f throughout analysis and reporting. The log number will be recorded on the chain-of-custody form P.' and in the legally-required log book maintained by the laboratory. The sample description, date received, client's name, and any other relevant information will also be recorded,