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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 fob number, date, time <br />of sample collection, a sample number unique to the sample, any in -field measurements <br />made, sampling methodology, name(s) of on-site personnel and any other pertinent field <br />observations also recorded on the field excavation or boring log <br />Cham -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 the <br />samples will relinquish them to the next person by signing the chain -of -custody form(s) <br />and noting the date and time The sample -control officer at the laboratory will verify <br />sample integrity, correct preservation, confirm collection in the proper container(s), and <br />ensure adequate volume for analysis <br />If these conditions are met, the samples will be assigned unique laboratory log numbers <br />for identification throughout analysis and reporting. The log numbers will be recorded on <br />the chain -of -custody forms and in the legally -required log book maintained in the <br />laboratory The sample description, date received, client's name, and any other relevant <br />information will also be recorded <br />ATTACH MENT/SOP-4/55YMM9ER 1992 <br />