Sierran Masthead

Gradual Progress for Indiana Air

by Bill Hayden with Tom Anderson
Environmental Representative
on the Indiana Air Pollution Control Board

Ozone Attainment

In 2001, Indiana met the one-hour health-based ozone standard for the first time since the Clean Air Act Amendments were adopted in 1990. The standard is 125 parts per billion for one hour of exposure. This is a great accomplishment but only one step on the road to healthy air.

Now the state must start working on the new EPA-adopted standard of 85 ppm for eight hours of exposure. The one-hour standard was not shown to be protective enough against irreversible lung damage, especially for children.

The Indiana Air Pollution Control Board has passed a rule to reduce nitrogen oxides, or NOx, by 100,000 tons per year, which will help get the state to the new eight-hour standard.

Title V Air Permits Explained

The Clean Air Act Amendments of 1990 created the air pollution operating permit program that combined all the pollution control requirements for each major stationary source of air pollution.

The amendments require public participation, but most citizens are intimidated by the technical nature of air pollution issues.

The air permits are named for Title V of the Clean Air Act, and they generally apply to companies that emit large quantities (generally over 100 tons per year) of lead, sulfur dioxide, and volatile organic compounds and certain levels of hazardous air pollutants.

Title V requires facilities to perform monitoring, record keeping, and reporting that are sufficient to assure ongoing compliance with the Clean Air Act's requirements. Title V permits do not impose new pollution controls. Permits for a number of the largest Northwest Indiana industries should be issued by the middle of 2002.

Copyright © 2007 Hoosier Chapter Sierra Club, all rights reserved.[7/20/02]efp

Spring 2002