Chain of Custody (COC) Documents

Chain of Custody (COC) Documents

To ensure proper documentation, traceability, and compliance, TRI Environmental requires a completed Chain of Custody (COC) form to accompany all sample submissions. These forms serve as essential records for quality assurance, project verification, and regulatory compliance.

When submitting samples, please be sure to fill out the corresponding COC form and include it with your shipment. In certain cases—such as interface friction testing—a specialized form will be provided via email. This allows us to gather specific project details and provide accurate testing procedures and a tailored quote.

When submitting samples, please be sure to fill out the corresponding COC form and include it with your shipment. In certain cases—such as interface friction testing— the COC form will provide specific instructions on how to perform the test, on this case this form will be sent to the Project Manager via email. This will allow us to gather specific project details and provide accurate testing procedures and a tailored quote.

Click on the links below to download or fill online the relevant COC forms, and please reach our to our team in case you have any questions about how to fill them out: