IDEM evaluates areas in all regions of Indiana in order to site air quality monitors for Indiana’s air toxics monitoring network. IDEM generally locates outdoor ambient air toxics monitoring sites in urbanized areas where there is a greater likelihood for increased air toxics emissions from multiple sources including mobile sources such as motor vehicles; stationary industrial sources; small area sources such as auto refinishing shops and drycleaners; indoor sources such as cleaning compounds and chemicals; and natural sources such as wildfires. Criteria for selecting specific monitoring site locations includes but is not limited to unobstructed air flow, accessibility for individuals who collect samples and perform maintenance, and site security.
Below are descriptions of the current monitoring locations in Indiana’s air toxics monitoring network.
Current Monitoring Locations
East Chicago
The East Chicago Air Toxics Monitor (also known as the East Chicago – Marina monitor) is located at the East Chicago Marina, 3301 Aldis St., East Chicago, IN 46312. It has been monitoring air toxics concentrations from 2012 through the present day. The East Chicago – Marina monitor is located in the northwestern portion of the state in Lake County. This area of Indiana is one of the most heavily industrialized areas of the county.
Gary
The Gary Air Toxics Monitor (also known as the Gary IITRI monitor) is located at the IITRI Bunker, 201 Mississippi St., Gary, IN 46402. It has been monitoring air toxics concentrations from 1999 through the present day. The Gary – IITRI monitor is located in the northwestern portion of the state in Lake County. This area of Indiana is one of the most heavily industrialized areas of the nation.
Hammond
The Hammond Air Toxics Monitor (also known as the Hammond – 141st St. monitor) is located at 1300 E. 141st St., Hammond, IN 46327. It has been monitoring air toxics concentrations from 1998 through the present day. The Hammond monitor is located in the northwestern portion of the state in Lake County. This area of Indiana is one of the most heavily industrialized areas of the nation.
Whiting
The Whiting Air Toxics Monitor (also known as the Whiting – HS monitor or the Whiting High School monitor) was located at 1751 Oliver St., Whiting, IN 46394. It has been monitoring air toxics concentrations from 2004 through the present day. The Whiting High School Monitor stopped sampling in December of 2015. In 2016 the monitor was moved 300 meters east to the HS Admin Bldg. at 1500 Center St. The Whiting High School monitor is located in the northwestern portion of the state in Lake County. This area of Indiana is one of the most heavily industrialized areas of the nation.
Ogden Dunes
The Ogden Dunes Air Toxics Monitor is located at the Water Treatment Plant, 84 Diana Rd., Ogden Dunes, IN 46368. It has been monitoring air toxics concentrations from 1998 through the present day. The Ogden Dunes monitor is located in the northwestern portion of the state in Porter County. This area of Indiana is one of the most heavily industrialized areas of the nation.
Terre Haute
The Terre Haute Air Toxics Monitor (also known as the Terre Haute – Fort Harrison Rd. monitor) is located at the Indiana Department of Transportation (INDOT) Maintenance Facility, 2900 Fort Harrison Road, Terre Haute, IN 47804. It has been monitoring air toxics concentrations from 2013 through the present day. The INDOT monitor is located in Vigo County in west central Indiana.
Indianapolis
The Indianapolis Air Toxics Monitor (also known as the Indpls – Washington Park monitor) is located in George Washington Park, 3120 E. 30th St., Indianapolis, IN 46218. It has been monitoring air toxics concentrations from 1999 through the present day. The Washington Park monitor is located in the center portion of the state in Marion County. The second Indianapolis Air Toxics Monitor (known as the Indianapolis – Near-Road or Indpls - I-70 E monitor) is located at 1650 Ludlow Ave. It started monitoring air toxics concentrations in 2016.
Evansville
The Evansville Air Toxics Monitor (also known as the Evansville – U of E monitor or the University of Evansville monitor) is located at the Carson Center on the campus of the University of Evansville at 1800 Walnut St., Evansville, IN 47714. It has been monitoring air toxics concentrations from 1999 through the present day. The University of Evansville monitor is located in the southwestern portion of the state in Vanderburgh County.
Clarksville
The Clarksville Air Toxics Monitor is located at the Falls of the Ohio State Park, 201 W. Riverside Dr. Clarksville, IN 47129. It has been monitoring air toxics concentrations from March, 2008 through the present day. The Clarksville monitor is located in the southern portion of the state, on the Ohio River at the southern tip of Clark County.