I. Research Problem Statement Due to automobile braking, roadside sediments in heavily trafficked regions have high levels of copper and zinc compared to sediment quality. Recent use of bio-retention filters…
Problem Statement A potentially major barrier to sharing data in environmental and related management systems is intellectual property rights, including copyrights, licensing, and terms of use. Although state Departments of…
Problem Statement The current practice for mitigating environmental impacts of transportation projects is to mitigate only specific impacts on specific resources without consideration of which produces the best environmental result.…
I. Research Problem Statement – Concerns about pavement noise continue to be expressed in many urban areas in the United States. Comprehensive studies have been completed in Europe resulting in…
I. Research Problem Statement: Erosion (runoff) and sedimentation of and from low-volume roads can adversely impact the environment. Many low-volume roads are soil or aggregate surfaced, have steeper grades than…
TERI Administrator Note (January 2009): Funded under NCHRP 25-25 (53). Background: The New Hampshire Department of Transportation has recently been issued a number of Water Quality Certifications by the NH…
I. Problem Statement: There is increasing evidence that nutrients are major constituents in highway runoff. This varies with the area of ROW as well as the vegetation types and adjacent…
TERI Administrator Note (January 2009): Funded as NCHRP Project 25-25 (52). Background: Under the Clean Water Act, the Corps is delegated the authority to permit the discharge of dredged or…
Right-of-way vegetation management is a major responsibility of the State DOTs. Traditionally, roadside vegetation was managed for a variety of purposes important to the public, such as safety, roadway integrity,…
By law, Departments of Transportation are required to control noxious weeds along highway rights-of-way (ROWs). Beginning 2000, District 4 (D4) of Minnesota Department of Transportation (Mn/DOT) adopted a survey design…