L&A Celebrates 30th Anniversary in 2015
Dr. William T. Lawhon, a family man, military veteran, scientist at Battelle Memorial Institute and entrepreneur, founded Lawhon & Associates in ...


Categorical Exclusion
Air Quality Modeling
Ecological Survey
ESA Screening
Noise Analysis
Purpose and Need
Section 106 Request for Review
Section 4(f) Determination
Section 404 Permitting
Section 7 Coordination

Interstate 71 Widening


The Ohio Department of Transportation, District 6, is proposing to rehabilitate and widen Interstate 71 on the south side of Columbus through three separate projects: Pickaway/Franklin County Line to SR 665, SR 665 to Stringtown Road and Stringtown Road to SR 315. L&A was responsible for completing the Categorical Exclusion (CE) for all three projects – two have received ODOT and FHWA approval and one is still in development. The necessary supporting studies varied based on the scope and environmental considerations of each segment, and included the evaluation of impacts to air quality, noise, ecological resources, cultural resources and hazardous materials. L&A also assisted ODOT with agency coordination efforts relative to compliance with Section 4(f) of the Department of Transportation Act, Section 404 of the Clean Water Act and Section 7 of the Endangered Species Act.