Participant Responsibilities

Program enrollment includes understanding and agreeing to certain program provisions. The provisions listed below are also listed on the program application and should be discussed during program enrollment. Participants can find additional information and best practices in the Participant Handbook.

Updating ACP Information

Participants receive a Change Form in their Welcome Packet for updating and changing their ACP records. Participants should contact the ACP for replacement forms as needed.

Address and Phone Number Changes

Participants must provide the ACP with a new address or telephone number within seven days of the change. §24-30-2106(2), C.R.S. Filing a change of address with the United States Postal Service does not satisfy this requirement and will result in undelivered mail.

Name Changes

Participants must provide the ACP with the Change Form and a copy of the court order reflecting the change within thirty days of the change. §24-30-2106(1), C.R.S.

Interacting With Government Agencies

It is the ACP participant's responsibility to notify government agencies about their ACP participation. §24-30-2108(1), C.R.S. Participants must present their ACP authorization card when requesting use of the substitute address, and agencies are authorized to make a copy of the authorization card. §24-30-2108(2), C.R.S. Participants may also need to present other ACP-provided documentation. Participants should refer to the Participant Handbook for additional information and guidance for interacting with specific agencies.

Using the Substitute Address

ACP participants are responsible for ensuring that their mail is sent to their assigned substitute address. The Participant Handbook provides suggestions for managing this transition. According to §24-30-2108(2), C.R.S., a participant's substitute address is their legal address for home, work, and school. The substitute address should be used whenever possible. Participants should refer to the Participant Handbook or contact the ACP if in doubt about providing an actual address to any person or agency.

Proper Address Formatting

Participants should have their mail addressed to their full substitute address, including the apartment number, as shown below. Incompletely or incorrectly addressed mail may be subject to delay or returned to the sender.

Participant Name
1001 E 62nd Ave Apt ____
Denver, CO 80216

Note: The ACP can only forward mail addressed to program participants. Mail addressed to a non-participant, a business name, or "in care of" a participant will not be forwarded. §24-30-2104(1)(b), C.R.S.

Renewing ACP Enrollment

Participants who wish to continue their enrollment after the initial four year term must submit renewal paperwork prior to their expiration date. The appropriate form and instructions will be sent to the participant by mail four to six weeks before their expiration date. §24-30-2105(5), C.R.S.

Service of Process and Legal Mail

The ACP is a participants' legal agent for the purpose of accepting legal mail and subpoenas (or any other personally-served document) as long as the service is in the participant's legal name. When the ACP accepts service on behalf of a participant, the participant is legally responsible for complying with the requirements contained in the legal document(s). ACP staff will notify participants about the service and forward the served document(s) by mail. §24-30-2104(3)(a), C.R.S.

Service of process will be accepted from 9 AM to 3 PM, Monday through Friday.

Cancellation of ACP Enrollment

Pursuant to §24-30-2107(1), C.R.S., the ACP must cancel a participant's program certification for the following reasons:

  • Failure to notify the ACP of a change in address or telephone number within 7 days
  • Failure to notify the ACP of a name change within 30 days
  • Submitting false information to the ACP
  • Mail sent by the ACP is considered undeliverable by USPS and returned
  • Residing outside the State of Colorado for more than 60 days
  • Failure to renew enrollment prior to the expiration date
  • They are a co-applicant who no longer resides with a primary applicant
  • They are a co-applicant or new adult (a child who has turned 18) who has not consented to ACP participation

The ACP will send a "Notice of Cancellation" and an "Appeal of Case Closure" form to the address on file with the ACP. Participants will have 30 days from the cancellation date to appeal the cancellation.

Voluntarily Withdrawing from the ACP

Participants wishing to voluntarily withdraw from the program must submit a Request to Withdraw form. More information is available in the Participant Handbook.

Discontinuing Use of the Substitute Address

Once program enrollment ends, it is the participant's responsibility to provide all necessary parties or agencies with their new address, and remove the substitute address from their records. Mail addressed to closed participants is returned to the sender. §24-30-2107(3), C.R.S.

Mail Delays and Returns

Participants should expect a delay of one or two business days. Incorrectly addressed mail may be delayed further, or returned to the sender. The ACP cannot forward packages, mail addressed to a business, trust, or similar entity, periodicals, or marketing mail. These items will be returned to the sender. Participants should refer to the Participant Handbook for more information on these policies.


General ACP Contact Information
1001 E. 62nd Ave., Denver, CO 80216
Phone: 303-866-2208 | Fax: 303-866-3946 | acp@state.co.us

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