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LB 593

Update references relating to automotive spark-ignition engine fuel

109th Legislature (2025-2026) Introduced by Mike Moser

Nebraska adopts ASTM D4814-24b for gasoline fuels, updates volatility tables and adds a minimum T50 for Classes D/E to improve cross-state fuel compatibility; penalties apply.

Approved by Governor on March 17, 2025
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Bill Summary · LB 593

Summary — LB 593 (2025)

Update references / adopt updated standards relating to automotive spark‑ignition engine fuel
Introduced by: Sen. Mike Moser | Approved by Governor: March 17, 2025

Purpose

LB 593 modernizes Nebraska’s statutory reference for gasoline specifications by adopting the current ASTM standard for automotive spark‑ignition engine fuel (ASTM D4814‑24b). The stated goal is to improve fungibility of fuel supplies across the distribution system and between states by updating volatility tables and incorporating a new minimum T50 volatility requirement for fuel Classes D and E.

Key provisions

  • Amends Neb. Rev. Stat. § 66‑1226 to:
    • Adopt by reference ASTM D4814‑24b (Standard Specification for Automotive Spark‑Ignition Engine Fuel).
    • Update the named standards body to its current name, “ASTM International” (replacing the older “American Society for Testing and Materials” phrasing).
    • Require that all automotive spark‑ignition engine fuels sold in Nebraska meet the ASTM D4814‑24b specification as of the act’s effective date.
    • Specify that “automotive spark‑ignition engine fuels” means gasoline and its blends with oxygenates such as alcohols and ethers.
    • Direct the Department of Agriculture to file copies of the adopted publication with the Secretary of State and Clerk of the Legislature.
  • Repeals the prior version of § 66‑1226 (which referenced the older ASTM D4814‑89).
  • Technical edits included (hyphenation of “spark‑ignition” and wording changes) as reflected in Enrollment and Review amendments.

Enforcement and penalties

  • Violation of the fuel-specification requirement is a Class I misdemeanor for a first offense and a Class IV felony for subsequent offenses (this penalty structure is retained in the amended section).

Who is affected

  • Fuel producers, refiners, blenders, importers, distributors, and retailers who supply gasoline or gasoline‑oxygenate blends in Nebraska (must comply with the adopted ASTM specification).
  • Nebraska Department of Agriculture (administrative filing and likely enforcement/oversight).
  • Indirectly affects consumers and interstate suppliers due to improved compatibility/fungibility of fuel supplies.

Procedural/timeline highlights

  • Introduced: January 22, 2025; referred to Natural Resources Committee.
  • Committee hearing: February 5, 2025; advanced to General File.
  • Enrollment & Review changes and amendments processed in February–March 2025.
  • Passed Final Reading: March 13, 2025 (47–0–2).
  • Presented to Governor: March 13, 2025; Approved March 17, 2025.

Notes

  • The bill adopts the latest ASTM D4814 revision (2024, designated 24b), including updated volatility tables and the new minimum T50 standard for Classes D and E fuels—technical details of those changes are contained in the ASTM publication itself.

Compiled from official sources — confirm details with the bill’s official record.

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