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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 document sample <br /> possession from the time of collection to its ultimate disposal Each sample container submitted for <br /> analysis is labeled to identify the job number, date, time of sample collection, a sample number unique <br /> to the sample, any in-field measurements made, sampling methodology, name(s) of on-site personnel <br /> and any 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 collection to its arrival <br /> at the laboratory During shipment, the person with custody of the samples will relinquish them to the <br /> next person by signing the chain-of-custody form(s) and noting the date and time The sample-control <br /> officer at the laboratory will 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 assigned unique laboratory log numbers for <br /> identification throughout analysis and reporting The log numbers will be recorded on the chain-of- <br /> custody forms and in the legally-required log book maintained in the laboratory The sample <br /> description, date received, client's name, and any other relevant information will also be recorded <br /> •7ACHMENVSOP-VSEPTEMBER 1992 <br />