# Gas Purchase and Deferred Balance Reports and Prudence Reviews

**Citation:** 4 CCR 723-4 Rule 4608  
**Type / status:** regulation / current  
**Agency:** Colorado Public Utilities Commission  
**Effective:** Not stated  
**Published:** Not stated

(a) GPDBR filing requirements. The utility shall file a GPDBR in accordance with paragraph 4602(e) for the review and approval of the calculation of the deferred GCA balance including the implementation of the utility's GPIM, as applicable, for the previous four quarters ending June 30. The GPDBR sh

## Document text

(a) GPDBR filing requirements. The utility shall file a GPDBR in accordance with
paragraph 4602(e) for the review and approval of the calculation of the deferred
GCA balance including the implementation of the utility’s GPIM, as applicable, for
the previous four quarters ending June 30. The GPDBR shall be filed under the
previous year’s GPP proceeding number (filed approximately 15 months
previously). Specific attachments or other information may be filed under seal;
however, an explanation of the confidential nature of the attachments or
information must be included in the GPDBR filing.
(b) Prudence review process. Based on the initial evaluation of the GPDBR,
including the results of the GPIM, the Commission may initiate a prudence review
hearing. The Commission shall initiate this hearing by written order within 120
days of the filing of the GDBPR. The prudence review may result in tariff or rate
changes that could affect different classifications of customers.
(c) Prudence review standard. For purposes of GCA recovery, the standard of
review to be used in assessing the utility's action (or lack of action) in a specific
gas purchase year is: whether the action (or lack of action) of a utility was
reasonable in light of the information known, or which should have been known,

at the time of the action (or lack of action). The Commission may consider, as
appropriate, whether the utility employed carefulness, precaution, attentiveness,
and good judgment.
(d) Burden of proof. If the Commission elects to hold a hearing, the utility shall have
the burden of proof and the burden of going forward to establish the
reasonableness of actual gas commodity and demand costs paid by the utility,
actual costs incurred in volatility management, and actual upstream service costs
of any nature incurred during the review period.
(e) Utility testimony and attachments. If the Commission sets a hearing, the utility
shall file its testimony supporting gas cost recovery for the gas purchase year at
issue. The testimony shall be filed in question-and-answer format. The utility shall
file its testimony not later than 45 days after the Commission sets the matter for
hearing.

## 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: `28d7635a707776f53159293885bbffeff8c50d16a289b7a99e5ab0365cc197f6`
- Retrieved: 2026-08-12T04:36:48.096Z
- Exported: 2026-08-24T17:46:18.223Z
- Document slug: `co-ccr-4-723-4-4608`

### Source metadata

```json
{
  "jurisdiction": "US-CO",
  "code": "4 CCR 723-4",
  "ruleKey": "4608",
  "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"
}
```