# State of Texas; Approval of State Implementation Plan (SIP) Addressing the Sulfur Dioxide Emission Limit; Site-Specific Revision to the SIP for the Aluminum Company of America (ALCOA) Facility in Rockdale, TX > **Rule** · Direct final rule. · Published 1996-09-23 · Effective 1996-11-22 · 61 FR 49685 ## Document - **Document number:** 96-24047 - **Category:** air-emissions - **Federal Register citation:** 61 FR 49685 - **CFR reference:** 40 CFR 52 - **Publication date:** 1996-09-23 - **Effective date:** 1996-11-22 - **State:** TX - **EPA docket:** TX-58-1-7256a ## Abstract This document announces the EPA's decision to approve a September 20, 1995, request from the State of Texas for a site-specific revision to the Texas sulfur dioxide (SO2) SIP. The revision amends the SO2 emission limitations applicable to the ALCOA facility in Milam County, Texas. In this action, the EPA is approving Texas' SIP revision allowing an increase in lignite fuel emissions of SO2 from 3.0 pounds per million British thermal units (lb/MMBtu) to 4.0 lb/MMBtu. The SIP revision also includes new requirements for limits on the sulfur content of the petroleum coke used at the ALCOA facility and an increased stack height to ``Good Engineering Practices'' (GEP) as defined in 40 CFR 51.100 (ii). Texas has modeled these changes demonstrating that with the revisions the National Ambient Air Quality Standards (NAAQS) for SO2 will remain protected. ## Source - [Federal Register document](https://www.federalregister.gov/documents/1996/09/23/96-24047/state-of-texas-approval-of-state-implementation-plan-sip-addressing-the-sulfur-dioxide-emission) --- *AI Analytics · CC0 1.0*