There is significant traffic congestion on freeways during peak hours in metropolitan areas across the country that lead to increased emissions and other impacts. Both recurring bottlenecks and nonrecurring events…
Transportation agencies conduct a significant portion of archaeological investigations in the US and in many developed countries around the world. Once a transportation project is built, however, there remains the…
During project development and construction, DOT agencies must assess the liability of real property acquisitions of contaminated property as well as contaminated waste management generated by disturbing these areas during…
The Section 4(f) Net Benefit Programmatic Evaluation was created in 2005. It provides a streamlined opportunity for Section 4(f) compliance when compared to completing an Individual Section 4(f) Evaluation. The…
Background Per- and polyfluoroalkyl substances (PFAS) are a group of manmade fluorinated chemicals that have been manufactured and used in a variety of industries since the 1940’s. They are persistent…
Commitments resulting from the environmental clearance document are intended to avoid, minimize, or mitigate impacts to environmental resources. These commitments vary in scope and may be derived from federal environmental…
Field test and model 12-15 low berms along different roadways and document the results. Compare the measured to the modeled results. Compare the results to typical structural noise barrier results.…
.1 To minimize the capital costs of an open caste mine by direct method of project appraisal techniques against the target levels of production (MT/annum) and Manpower (000’s). For e.g.,…
Emission factors versus speed curves generated using the MOVES3 model exhibit very anomalous behavior at higher road grades that are within the range encountered in project-level air quality analyses for…
The recently completed NCHRP study (20-05 Topic 51-18 Practices for Project-Level Analyses for Air Quality) included a recommendation for the development of a template guidance document for the preparation of…