# Revisions to the California State Implementation Plan; South Coast Air Quality Management District; Control of Oxides of Nitrogen Emissions From Off-Road Diesel Vehicles
> **Rule** · Final rule. · Published 2016-11-21 · Effective 2016-12-21 · 81 FR 83154
## Document
- **Document number:** 2016-27853
- **Category:** air-emissions
- **Federal Register citation:** 81 FR 83154
- **CFR reference:** 40 CFR 52
- **Publication date:** 2016-11-21
- **Effective date:** 2016-12-21
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2015-0819
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve South Coast Air Quality Management District (SCAQMD or "the District") Rule 2449, Control of Oxides of Nitrogen Emissions from Off-Road Diesel Vehicles, as a revision to the SCAQMD portion of the California State Implementation Plan (SIP). SCAQMD Rule 2449 adopts by reference title 13, chapter 9, section 2449.2 of the California Code of Regulations, "Surplus Off-Road Opt-In for NO<INF>X</INF> (SOON) Program." SCAQMD Rule 2449 requires certain in-use off-road vehicle fleets to meet more stringent requirements in the South Coast area when funding is provided by the District in order to achieve additional reductions of oxides of nitrogen (NO<INF>X</INF>).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/11/21/2016-27853/revisions-to-the-california-state-implementation-plan-south-coast-air-quality-management-district)
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