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-- f <br /> _A41 <br /> AEGIS ENVIRONMENTAL, INC. <br /> STANDARD OPERATING PROCEDURES <br /> RE: SAMPLE IDI"NTIFICATION AND CHAW—OF-CUSTODY PROCEDURES <br /> SOP-4 <br /> ain-of-custody procedures ensure sample integrity, and <br /> Sample identrficatian and ch <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 jab 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 /> 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 the <br /> samples will relinquish them to the next person by signing the chain-cf-custody form(s) <br /> le-control officer at the laa•,bratory will verify <br /> and noting the date and time. The sampE <br /> sample integrity. correct dreservation, confirm collection in the proper containers) and <br /> ensure adequate volume for analysis. <br /> If these conditions are met,the samples will be assigned unique laboratory log numbers <br /> r 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, ciient's name and any other relevant <br /> information will also be recorded. <br /> 5 <br /> �`� SOP-4/Oct. 1990 <br />