# Advice Letters

**Citation:** 4 CCR 723-4 Rule 4110  
**Type / status:** regulation / current  
**Agency:** Colorado Public Utilities Commission  
**Effective:** Not stated  
**Published:** Not stated

(a) All advice letter filings shall comply with rule 1210 of the Commission's Rules of Practice and Procedure. (b) In addition to the requirements and contents in rule 1210, the advice letter shall include the estimated amounts, if any, by which the utility's revenues will be affected, calculated on

## Document text

(a) All advice letter filings shall comply with rule 1210 of the Commission's Rules of
Practice and Procedure.
(b) In addition to the requirements and contents in rule 1210, the advice letter shall
include the estimated amounts, if any, by which the utility’s revenues will be
affected, calculated on an annual basis.
(c) Customer notice of advice letter. If the utility is required by statute, Commission
rule or order to provide notice to its customers of the advice letter, such notice
shall include the requirements of subparagraphs 4002(d)(I) - (XII).

## 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: `b7f9a5acbd590186a19bccab3f44f665e9499319dd1d574a55cf255762958310`
- Retrieved: 2026-08-12T04:36:48.096Z
- Exported: 2026-08-25T11:18:07.459Z
- Document slug: `co-ccr-4-723-4-4110`

### Source metadata

```json
{
  "jurisdiction": "US-CO",
  "code": "4 CCR 723-4",
  "ruleKey": "4110",
  "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 This is an adjacent gas-utility corpus, not a replacement for the repealed dedicated 4900-series pipeline-safety rules.",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"
}
```