# Certificate Amendments for Changes in Service, in Service Territory, or in Facilities

**Citation:** 4 CCR 723-4 Rule 4103  
**Type / status:** regulation / current  
**Agency:** Colorado Public Utilities Commission  
**Effective:** Not stated  
**Published:** Not stated

(a) A utility seeking authority to do the following shall file an application pursuant to this rule: amend a certificate of public convenience and necessity in order to extend, to restrict, to curtail, or to abandon or to discontinue without equivalent replacement any service, service area, or facil

## Document text

(a) A utility seeking authority to do the following shall file an application pursuant to
this rule: amend a certificate of public convenience and necessity in order to
extend, to restrict, to curtail, or to abandon or to discontinue without equivalent
replacement any service, service area, or facility. A utility shall not extend,
restrict, curtail, or abandon or discontinue without equivalent replacement any
service, service area, or facility not in the ordinary course of business without
authority from the Commission.
(b) An application to amend a certificate of public convenience and necessity in
order to change, to extend, to restrict, to curtail, to abandon, or to discontinue
any service, service area, or facility without equivalent replacement shall include,
in the following order and specifically identified, the following information, either
in the application or in appropriately identified attachments:
(I) all information required in paragraphs 4002(b) and 4002(c);
(II) if the application for amendment pertains to a certificate of public
convenience and necessity for facilities, all of the information required in
rule 4102;
(III) if the application for amendment pertains to a certificate of public
convenience and necessity for franchise rights, all of the information
required in rule 4100;
(IV) if the application for amendment pertains to a certificate of public
convenience and necessity for service territory, all of the information
required in rule 4101;
(V) if the application for amendment pertains to a service, the application shall
include:
(A) the requested effective date for the extension, restriction,
curtailment, or abandonment or discontinuance without equivalent
replacement of the service; and
(B) a description of the extension, restriction, curtailment, or
abandonment or discontinuance without equivalent replacement
sought. This shall include maps, as applicable. This shall also
include a description of the applying utility's existing operations and
general service area.

(c) Customer notice of application. In addition to complying with the notice
requirements of the Commission’s Rules Regulating Practice and Procedure, a
utility applying to curtail, restrict, abandon or discontinue service without
equivalent replacement shall prepare a written notice as provided in
subparagraphs 4002(d)(I) through (XII) and shall mail or deliver the notice at
least 30 days before the application's requested effective date to each of the
applying utility's affected customers. The customer notice shall include a
statement detailing the requested restriction, curtailment, or abandonment or
discontinuance without equivalent replacement.
(d) If no customers will be affected by the grant of the application, the notice must
meet the requirements of subparagraphs 4002(d)(I) through (XII) and shall be
mailed to the Board of County Commissioners of each affected county, and to
the mayor of each affected city, town, or municipality.

## Provenance

- Official: Yes
- Source: <https://www.sos.state.co.us/CCR/DisplayRule.do?action=ruleinfo&ruleId=2260&deptID=18&agencyID=96&deptName=Department%20of%20Regulatory%20Agencies&agencyName=Public%20Utilities%20Commission&seriesNum=4%20CCR%20723-4>
- Source ID: `co-sos-ccr`
- SHA-256: `2766f0cba05e1ac3ed4447b5938f06eff066ceb226477f56b7f2ddfe47cc192d`
- Retrieved: 2026-08-12T04:36:48.096Z
- Exported: 2026-08-24T11:54:32.694Z
- Document slug: `co-ccr-4-723-4-4103`

### Source metadata

```json
{
  "jurisdiction": "US-CO",
  "code": "4 CCR 723-4",
  "ruleKey": "4103",
  "pipelineScope": "colorado-jurisdictional-gas-utilities",
  "legalScope": "Current 4 CCR 723-4 rules regulating Colorado jurisdictional gas utilities and gas master-meter operators, including construction, operation, system safety, gas infrastructure planning, metering, service, and enforcement provisions. This is an adjacent gas-utility corpus, not a replacement for the repealed dedicated 4900-series pipeline-safety rules.",
  "applicabilityCaveat": "Part 4 applies according to Colorado Public Utilities Commission jurisdiction and each rule's scope. The former dedicated pipeline-safety rules 4900 through 4975 are reserved after repeal; this connector does not represent them as current. Part 4 does not replace federal pipeline-safety requirements, determine whether a facility is interstate or intrastate, or resolve operator-specific orders, waivers, tariffs, or later rulemaking.",
  "references": [],
  "ruleInfoUrl": "https://www.sos.state.co.us/CCR/DisplayRule.do?action=ruleinfo&ruleId=2260&deptID=18&agencyID=96&deptName=Department%20of%20Regulatory%20Agencies&agencyName=Public%20Utilities%20Commission&seriesNum=4%20CCR%20723-4",
  "pucRulesUrl": "https://puc.colorado.gov/gasrulesandregulations",
  "ruleVersionId": "12549",
  "editionEffectiveOn": "2026-06-14",
  "publicationStatus": "The Colorado Secretary of State identifies the source as the official publication of state administrative rules. The edition date applies to the compiled rule version and is not represented as the effective date of every provision.",
  "rights": "Official state rule text is preserved with attribution and source links. Public accessibility does not imply rights in agency marks, third-party material, or incorporated standards; commercial redistribution requires review.",
  "region": "CO"
}
```