The CDX ESA is signed by all users that have a signatory role. People in this role would include both Responsible Officials and Duly Authorized Representatives. A CDX ESA must be signed by all users requesting the role Permittee (signature) in order to log-in to CDX. A RO does not approve DARs CDX ESA. Signing a CDX ESA is a onetime occurrence during user account registration in CDX.
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