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VEGISENVIRONMENTAL, 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 <br /> sample possession from the time of collection to its ultimate disposal Each sample container <br /> submitted for analysis is labeled to identify the lob number, date, time of sample collection, a <br /> sample number unique to the sample, any in-field measurements made, sampling methodology, <br /> name(s) of on-site personnel and any other pertinent field observations also recorded on the field <br /> excavation or boring log <br /> Chain-of-custody forms are used to record possession of the sample from time of collection to its <br /> arrival at the laboratory During shipment, the person with custody of the samples will relinquish <br /> them to the next person by signing the chain-of-custody form(s) and noting the date and time The <br /> sample-control officer at the laboratory will verify sample integrity, correct preservation, confirm <br /> collection in the proper container(s), and ensure adequate volume for analysis <br /> IIf 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 /> escription, date received, client's name, and any other relevant information will also be recorded <br />' ATTACH MENT/SOP�4/SEPMMBER 1992 <br />