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Field Sample Management Standard Operating Procedure SWE-FSOP-002;Revision 1 Ahtna Southwest Environmental Operations project work plans. Shipping coolers should be inspected for defects and must be decontaminated before use. [PFAS Projects]: Surfaces in contact with the sampled media should not contain Teflon° or other PFAS-containing material. Use new, certified sample containers suitable for the media being analyzed. Containers should be provided by the analytical lab or supplier in the appropriate quantity to accommodate required volumes for the field sample, duplicates, and any amounts required for laboratory QC processes. Certification requirements are specified in the USEPA Specifications and Guidance for Contaminant Free Sample Containers (EPA, 1992). 4.3 Sample Collection and Handling Each person handling the samples must document from whom and when the item was received and to whom and when it was delivered. Documentation of handling samples is part of the custody record,which provides the mechanism for tracking samples from the time of sample collection thru laboratory analysis and disposal. A sample is considered to be "in custody"for legal proceedings if it is: • In a person's actual possession • In view after being in physical possession • Locked up so that no one can tamper with it after having been in physical custody • In a secured area, restricted to authorized personnel only. If any one of these is not in place at all times, sample custody is broken. The FTL should notify the PL of actions taken and document the PL decision. If corrective action is needed, the Program Manager and SWE Field Quality Control Manager should be notified. Sampling procedures are described in the SWE-FSOP-400 series of SOPs.The Field Team is responsible for logging the sample collection in field logbooks/notepads or field forms as described in SWE-FSOP-001, "Field Documentation." Sample custody begins at the time of sample collection, and its custody is assigned to the Field Team sample custodian. Custody transfers must be documented.Typical transfers include: • Transfer of samples from contractors, if used,to Ahtna staff • Transfer of samples to a transporter • Transfer of samples to the laboratory • Transfer of samples within the laboratory When samples are transferred,the transfer is noted in the field logbook/notepad or field form SWE-FFRM- 002, "Chain of Custody," or similar form. The name of the organization/individual and date/time of the transfer and organization/name and date/time of the recipient. For samples shipped by ground or air carrier,the unique airbill number or bill of laden should be recorded. Page 7 of 12