# Chapter 421, § 5: Documentation Requirements

**Citation:** 65-407 C.M.R. ch. 421, § 5  
**Type / status:** regulation / current  
**Agency:** Maine Public Utilities Commission  
**Effective:** 2012-06-14  
**Published:** 2012-06-14

A. Preservation of Records

## Document text

A.	Preservation of Records

1.	All records required by these rules shall be preserved by the LPG operator for 1 year after the LPG Operator ceases to operate the LPG system unless otherwise designated by 49 C.F.R. Part 192.

2.	The LPG operator shall make such records available to the Commission upon request at the LPG operator’s local office.

B.	LPG Operator Documentation of Gas Odorization

1.	All LPG delivered by distribution system to customers shall be odorized by the addition of a warning agent of such character that the gases are detectable, by a distinct odor.

2.	The presence of odorant shall be determined by sniff-testing or other means and the results documented upon delivery to the distribution system storage containers or when LPG is loaded into the containers of delivery vehicles at a bulk facility.

## Provenance

- Official: Yes
- Source: <https://www.maine.gov/sos/sites/maine.gov.sos/files/content/assets/407c421.doc>
- Source ID: `me-puc-pipeline-safety`
- SHA-256: `61626934cac39159f2312e7396e1e93755f1a633a7c1cc68e72e51635a64faa0`
- Retrieved: 2026-08-20T10:06:50.037Z
- Exported: 2026-08-25T08:39:25.106Z
- Document slug: `me-cmr-65-407-421-5`

### Source metadata

```json
{
  "jurisdiction": "US-ME",
  "code": "65-407 C.M.R.",
  "chapter": "421",
  "section": "5",
  "corpusScope": "complete-current-chapters-420-and-421",
  "publicationObservedOn": "2026-08-20",
  "exactScope": "This bounded corpus contains the complete current operative text of all 10 top-level sections of 65-407 C.M.R. Chapter 420 and all 7 top-level sections of Chapter 421. Chapter 420 governs intrastate natural-gas and LNG pipeline operators; Chapter 421 separately governs jurisdictional LPG distribution systems within 49 C.F.R. Part 192.",
  "excludedScope": "Chapter 895 damage prevention, Chapters 130 and 140 reporting and mapping, gas accounting, rates, metering, customer protection, siting, environmental permits, statutes, dockets, orders, forms, federal text, interstate pipelines, hazardous-liquid pipelines, and private standards are not standalone searchable documents in this rules connector. Their exclusion does not imply legal irrelevance.",
  "applicabilityCaveat": "Maine's certified program covers intrastate gas pipeline operators, including covered natural-gas, LNG, and jurisdictional LPG facilities. Chapter 420 expressly excludes interstate natural-gas facilities and transportation. PHMSA retains gas interstate and gas/hazardous-liquid responsibilities not assumed by Maine; neither the MPUC program page nor PHMSA fact sheet establishes Maine hazardous-liquid certification.",
  "incorporationCaveat": "Chapter 420 dynamically incorporates amendments to 49 C.F.R. Parts 40, 190, 191, 192, 193, 198, and 199. Chapter 421 dynamically incorporates Parts 191 and 192 but fixes its NFPA 58 baseline to the 2004 edition with stated exceptions. This connector records those links without reproducing federal or private standards or deciding the legal effect of prospective incorporation.",
  "publicationCaveat": "The Maine Secretary of State warns that online rule copies are not certified copies for adjudicatory or evidentiary use. Chapter 420's controlling online copy is filing 2026-135, effective June 30, 2026; older MPUC gas pages that still identify the 2021 version are stale. Chapter 421's history says filing 2012-156 was filed May 15, 2010, an apparent source typo preserved rather than silently corrected. The PHMSA state page is corroborative program-scope evidence, not controlling Maine rule text.",
  "rightsCaveat": "Maine and federal government source artifacts are archived with attribution and SHA-256 provenance. Public availability does not settle rights in site presentation, seals, agency marks, forms, incorporated federal material, or private standards such as NFPA 58; downstream redistribution requires separate review.",
  "federalIncorporation": "dynamic-with-fixed-NFPA-58-2004-baseline",
  "references": [
    {
      "citation": "49 CFR Part 192",
      "referenceType": "federal_regulation",
      "url": "https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-D/part-192"
    }
  ],
  "region": "ME"
}
```