# Definitions

**Citation:** 4 CCR 723-4 Rule 4551  
**Type / status:** regulation / current  
**Agency:** Colorado Public Utilities Commission  
**Effective:** Not stated  
**Published:** Not stated

(a) "Customer-owned yard line" means any customer-owned gas line running underground from the utility meter to a customer's home, business, or other customer end use. (b) "Defined programmatic expense" means a programmatic expense that, in the aggregate, falls within the oversight of a utility's app

## Document text

(a) “Customer-owned yard line” means any customer-owned gas line running
underground from the utility meter to a customer’s home, business, or other
customer end use.
(b) “Defined programmatic expense” means a programmatic expense that, in the
aggregate, falls within the oversight of a utility’s application for issuance of a
certificate of public convenience and necessity or approval of a gas infrastructure
plan. Defined programmatic expense means company-wide programmatic
investment in activities related to relocation or replacement of meters and
customer-owned yard lines, or as otherwise ordered by the Commission.
(c) “Gas infrastructure plan action period” means a three-year period beginning
January 1st of the year in which the gas infrastructure plan application filing is
made.

(d) “Gas infrastructure plan informational period” means the three-year period
following the gas infrastructure plan action period.
(e) “Gas infrastructure plan total period” means the gas infrastructure plan action
period and the gas infrastructure plan informational period.
(f) “Planned project” means any planned facility or an extension of an existing
facility, or a defined programmatic expense with a defined scope of work and
associated cost estimate that exceeds $3 million in utility capital investment in
2020 dollars, or $2 million in utility capital investment in 2020 dollars for gas
utilities with less than 50,000 full-service customers, as adjusted annually for
inflation.
(I) The dollar thresholds in paragraph (f) shall be adjusted for inflation
annually on March 1 of each year, based upon the annual percentage
change in the United States Bureau of Labor Statistics Consumer Price
Index - Denver-Aurora-Lakewood as published by the Colorado
Department of Local Affairs for the immediately preceding calendar year.
These adjustments shall be compounded annually. For reference, the
Commission will post a notice on its website, https://puc.colorado.gov/, by
March 15 of each year reporting the annual inflation adjustments
applicable pursuant to this rule.

## 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: `d4426fc75d9dab642e2cb8e9efef07dd2059d45d159ddfb1d56876f51fdb2f7c`
- Retrieved: 2026-08-12T04:36:48.096Z
- Exported: 2026-08-25T06:09:09.051Z
- Document slug: `co-ccr-4-723-4-4551`

### Source metadata

```json
{
  "jurisdiction": "US-CO",
  "code": "4 CCR 723-4",
  "ruleKey": "4551",
  "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"
}
```