Approval and Promulgation of State Implementation Plan; Indiana
air-emissions · Rule · Published 1997-06-26 · Effective 1997-08-25 · IN · 62 FR 34406
Document
Document number
97-16739
Federal Register citation
62 FR 34406
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
1997-06-26
Effective date
1997-08-25
State
IN
EPA docket
IN79-1A
Abstract
The United States Environmental Protection Agency (USEPA) is approving a February 5, 1997, request from Indiana, for a State Implementation Plan (SIP) revision for the Vanderburgh County ozone nonattainment area. The revision is for a transportation control measure (TCM) to reduce the emissions of volatile organic compounds (VOCs) from motor vehicles by converting city-owned vehicles to compressed natural gas as a fuel. Reductions in VOCs help protect the public's health and welfare by reducing ground level ozone, commonly known as urban smog. High concentrations of ground level ozone can aggravate asthma, cause inflammation of lung tissue, decrease lung function, and impair the body's defenses against respiratory infection.