Submit Chain of Custody Forms Download Chain of Custody Forms Chain of Custody SubmissionPlease complete the form below to submit your Chain of Custody (COC) form and related documents. All fields marked with * are required.Company Name* Contact Name* Email Address* Phone Number* Test Type* —Please choose an option—GeotextileGCL TestingGeomembraneInterface TestingGeocompositeGeonetSoils - NJSoils - SCHydraulic TransmissivityUpload Chain of Custody Form* Additional Comments or Instructions I confirm that the information provided is accurate and complete.