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Environmental Policy

The Environmental Policy Office is dedicated to ensuring that INDOT is compliant with the National Environmental Policy Act (NEPA) and hazardous material requirements. The Office is responsible for red flag investigations, Phase I & II environmental site assessments (ESA), remediation of contamination discovered during construction, noise barrier assessments, air quality reviews, and the preparation/review of NEPA documents.    

Within Environmental Policy there are two units: Document Review and Site Assessment & Management. The Document Review Unit is responsible for ensuring that Indiana’s transportation projects comply with federal and state requirements for environmental documentation, including NEPA, the state Environmental Policy Act, and associated regulations. The unit prepares and reviews Environmental Impact Statements, Environmental Assessments, and Categorical Exclusions.

The mission of the Site Assessment & Management (SAM) is to provide support and guidance to INDOT employees, consultants, and contractors in the areas of:

  • Processing, developing, reviewing, and approving Red Flag Investigations, Phase I ESA and Phase II ESA for INDOT transportation project development and implementation; 
  • Management of the investigation and remediation of INDOT-owned contaminated properties; 
  • Hazardous materials management;
  • Hazardous waste management; and 
  • Day-to-day guidance as needed 

Environmental Policy Manuals 

Procedural Manual for Environmental Studies  2008

Categorical Exclusion (CE) Preparation Manual – Last Updated May 2017    

Standard Language - Last Updated October 2019

State Enviromental Policy Act Documents

Programmatic Categorical Exclusion

Project Development Tools  

Policy Links

Early Coordination

Water Quality Information

Stormwater Coordination Guidance

USFWS Coordination Guidance  

Policy Background

Site Assessment & Management (SAM) Information  

Air Quality Information

Noise Information

Public Involvement

Recent List Serv Annoucements - EPO Guidance

Contact Information

Ron Bales
Environmental Policy Manager
Indiana Department of Transportation
100 N. Senate Ave. IGCN 642
Indianapolis, IN 46204

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