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s <br /> 1 >� <br /> r AEGIS ENVIRONMENTAL, UIC. <br /> STANDARD OPERATING PROCEDURES <br /> RE: SAMPLE. IDENTIFICATION AND CHAIN-OF-CUSTODY PROCEDURES <br /> SOP-4 <br /> tP� <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, 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 /> a 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 /> VIA <br /> ensure adequate volume for analysis. <br /> , I <br /> t� 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 /> r� <br /> ._; <br /> t <br /> 3 <br /> i <br /> 1 <br /> L <br /> rr <br /> ATTACHMENTISOP•4/June 1990 - <br /> S <br />