# HAR 6-77-169 Odorization of gas **Citation:** HAR 6-77-169 **Type / status:** regulation / current **Agency:** Hawaii Public Utilities Commission **Effective:** 1994-09-03 **Published:** 1994-04-15 a natural odorant or be odorized so that at a concentration in air of one-fifth of the lower explosive limit, the gas is readily detectable by a person with a normal sense of smell. (b) After December 31, 1976, a combustible gas in a transmission line in a Class 3 or Class 4 location must comply wit ## Document text a natural odorant or be odorized so that at a concentration in air of one-fifth of the lower explosive limit, the gas is readily detectable by a person with a normal sense of smell. (b) After December 31, 1976, a combustible gas in a transmission line in a Class 3 or Class 4 location must comply with the requirements of subsection (a) unless: (1) At least fifty percent of the length of the line downstream from that location is in a Class 1 or Class 2 location; (2) The line transports gas to any of the following facilities which received gas without an odorant from that line before May 5, 1975; (A) An underground storage field; (B) A gas processing plant; (C) A gas dehydration plant; or (D) An industrial plant using gas in a process where the presence of an odorant; (i) Makes the end product unfit for the purpose for which it is intended; (ii) Reduces the activity of a catalyst; or (iii) Reduces the percentage completion of a chemical reaction; or (3) In the case of a lateral line which transports gas to a distribution center, at least fifty percent of the length of that line is in a Class 1 or Class 2 location. (c) In the concentrations in which it is used, the odorant in combustible gases must comply with the following: (1) The odorant may not be deleterious to persons, materials, or pipe. (2) The products of combustion from the odorant may not be toxic when breathed nor may they be corrosive or harmful to those materials to which the products of combustion will be exposed. (d) The odorant may not be soluble in water to an extent greater than 2.5 parts to 100 parts by weight. (e) Equipment for odorization must introduce the odorant without wide variations in the level of odorant. (f) Each operator shall conduct periodic sampling of combustible gases to assure the proper concentration of odorant in accordance with this section. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.625, October 1, 1990) ## Provenance - Official: Yes - Source: - Source ID: `hi-puc-har-6-77` - SHA-256: `6ac2e83a2636bca0f7d5ab7a38928485df1176b92a9be4ca2f88743f7869eac4` - Retrieved: 2026-08-12T08:22:24.168Z - Exported: 2026-08-25T11:24:39.694Z - Document slug: `hi-har-har-6-77-169` ### Source metadata ```json { "jurisdiction": "US-HI", "chapter": "HAR Chapter 6-77", "provisionKind": "section", "adoptedOn": "1994-04-15", "filedOn": "1994-08-24", "exactEffectiveDateAvailableInPublication": true, "publicationStatus": "officially-published-superseded-slated-for-repeal", "phmsaProgramParticipant": false, "stateCertificationRepresented": false, "federalInspectionAndEnforcement": [ "interstate gas", "intrastate gas", "interstate hazardous liquid", "intrastate hazardous liquid" ], "fixedFederalBaseline": "1990-10-01", "editorialModernizationApplied": false, "references": [ { "citation": "49 CFR 192.625", "referenceType": "federal_regulation", "url": "https://www.ecfr.gov/current/title-49/section-192.625", "incorporatedEdition": "1990-10-01" }, { "citation": "HRS 269-6", "referenceType": "state_statute", "url": "https://data.capitol.hawaii.gov/hrscurrent/Vol05_Ch0261-0319/HRS0269/HRS_0269-0006.htm" } ], "caveats": { "exactScope": "Complete substantive text of the Hawaii Public Utilities Commission publication of HAR Chapter 6-77: 196 non-reserved numbered sections and Appendices A through D. Four expressly reserved section slots are inventory-only. The PUC's April 2026 page links a 160-page signed scan; an official 178-page text-layer copy from Budget and Finance is used as the higher-quality transcription aid. The publication is an April 15, 1994 adoption, filed August 24 and effective September 3, 1994, based on the October 1, 1990 federal text; it is not a current restatement of federal pipeline standards.", "applicability": "Hawaii is not represented as certified, as an agreement state, or as an interstate agent under the PHMSA federal-state pipeline safety program. PHMSA states that its Office of Pipeline Safety inspects and enforces federal pipeline safety regulations for interstate and intrastate gas and hazardous-liquid pipelines in Hawaii. Chapter 6-77 may remain relevant as published state utility material, but it must not be used to infer current Hawaii inspection or enforcement authority.", "currentness": "The Hawaii PUC still links Chapter 6-77 on its official rules page, updated April 2026. Hawaii's official 2022 periodic rules-review report separately says Chapter 6-77 is to be repealed, was superseded by statute and a federal takeover letter, and cites 2009 Act 25. Because the PUC page does not mark the chapter repealed, this connector preserves the published text with an explicit superseded/slated-for-repeal warning rather than declaring an unproved completed administrative repeal.", "incorporation": "The chapter repeatedly identifies the October 1, 1990 edition of 49 CFR Parts 191 and 192 and its appendices as the implemented source. That fixed, obsolete baseline is preserved exactly. Current federal text, later amendments, and current editions of incorporated private standards must not be silently substituted when researching what this publication says.", "excludedScope": "This connector excludes HAR Chapter 6-83 one-call damage prevention, utility rates and service standards, statutes as standalone documents, dockets, orders, tariffs, federal text, current federal amendments, and the full text of incorporated private standards. Those materials require separate completeness, currentness, applicability, and rights analysis.", "rights": "Official Hawaii and PHMSA artifacts are retained with attribution and SHA-256 provenance. Public access does not establish unrestricted rights in site presentation, state marks, forms, or incorporated private standards. The connector records citations to private standards but makes no independent rights claim for those works." }, "region": "HI" } ```