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AEGIS ENVIRONMENTAL, INC. <br /> STANDARD OPERATING PROCEDURES <br /> RE: SAMPLE IDENTIFICATION AND CHAIN-OF-CUSTODY PROCEDURES <br /> SOP-4 <br /> Sample identification and chain-of-custody procedures ensure sample integrity, and <br /> document sample possession from the time of collection to its ultimate disposal. Each <br /> sample container submitted for analysis is labeled to identify the job number, date, <br /> time of sample collection, a sample number unique to the sample, any in-Meld <br /> measurements made, sampling methodology, name(s) of on-site personnel and any <br /> other pertinent field observations also recorded on the field excavation or boring log. <br /> Chain-of-custody forms are used to record possession of the sample from time of <br /> collection to its arrival at the laboratory. During shipment, the person with custody of <br /> the samples will relinquish them to the next person by signing the chain-of-custody <br /> form(s) and noting the date and time. The sample-control. officer at the laboratory will <br /> verify sample integrity, correct preservation, confirm collection in the proper <br /> container(s), and ensure adequate volume for analysis. <br /> If these conditions are met, the samples will be ssigned unique laboratory log <br /> numbers for identification throughout analysis and reporting. The log numbers will be <br /> recorded on the chain-of-custody forms and int the legally-required log book <br /> maintained in the laboratory. The sample descri tion, date received, client's name, <br /> and any other relevant information will also be recorded. <br /> I <br /> I <br /> ATTACHMENT/SOP-4/50-9 MBER 1992 <br />