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C � MIFFCDIM Standard Operating Procedure ," 1 1.0 Chain of Custody E"°'"E`°'"° Rev. 0 10/23/2020 3.1 COC Contents Sampling personnel will properly complete a COC upon collection of samples for analysis. The COC will be the controlling document to assure that sample handling and custody are maintained, thereby assuring the sample(s) are representative of the environment from which they were collected. At a minimum, the following information will be recorded on the COC document: • The unique identification number assigned to each sample; • The date and time of the sample collection; • A description of the sample method (e.g., grab or composite); • A physical description of the sample matrix (e.g., soil, water, etc.); • Number of sample containers; • Confirmation that the sample was field filtered; • Sample preservation (e.g., HNO3, H2SO4, ice, etc.); • Requested analyses (analyte and/or method identification); • Special instructions to the laboratory including handling requirements, quality assurance/quality control, health and safety, and sample disposition; • The project name and number; • The date the analytical report is due; • The names of all sampling personnel; • The name and phone number of the project contact; • The name and phone number of the laboratory contact; and • The name of the courier and the waybill number(if applicable). The COC document will be initiated in the field by the person collecting the samples and signed by each individual (custodian) who has the samples in their possession. Each time that sample custody is transferred, the former custodian must sign the COC relinquishment and the new custodian must sign the COC receipt. Relinquishment and receipt signatures must be accompanied by the date and time, as well as the name of the project or company affiliation. 3.2 Direct Transfer to Laboratory COC transfer from sampling personnel to the analytical laboratory will be performed in accordance with the requirements stated below. If sampling personnel deliver the samples to the laboratory, or if a laboratory representative comes to the site/office to transport the samples to the laboratory, COC transfer occurs as follows: 2