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Environmental Policy

Glossary & Acronyms

A-C | D-F | G-I | K-M | N-P | Q-S | T-Z

A through C

404 Individual Permit - A United States Army Corps of Engineers’ authorization for proposed discharge of dredged or fill material from a specific project into the waters of the United States.

404 Nationwide Permit - A general permit issued by the United States Army Corps of Engineers to regulate the discharge of dredged or fill material that has been determined to have minimal impact on the waters of the United States.

404 Pre-Construction Notification - A document, generally a completed 404 application, which must be submitted to the United States Army Corps of Engineers prior to commencing an activity authorized by a Section 404 nationwide permit.

4(f) - Resources protected under Section 4(f) of the United States Department of Transportation Act. These resources include: parks and recreation areas that are publicly owned or open to the public, publicly owned wildlife or waterfowl refuges, and significant historic sites.

4(f) Determination - Administrative action by which the Federal Highway Administration confirms that, on the basis of extensive studies and analysis, there are no “prudent and feasible” alternatives to the taking of land from resources protected under Section 4(f) of the United States Department of Transportation Act.

6(f) (of the Federal Land and Water Conservation Fund Act) - Provision that protects public recreational properties developed or enhanced using federal funding supplied to states or municipalities under the act by requiring replacement of lands converted to nonrecreational uses.

Access Management - A systematic process to manage the number, location and design of direct access points to the public road system in an effort to maintain traffic flow while providing adequate access to adjacent land.

ACCESS OHIO - Ohio’s statewide long-range transportation plan.

Administrative Letting Report - Document, developed by the Office of Estimating that contains specific goals for plan package submission, Engineer’s Estimate completion, plan package approval, bid dates, and award dates.

Aerial Mapping Topographic mapping and digital terrain data produced from controlled aerial photographs using stereoanalytic plotters.

Agency Coordination - Consists seeking input from state and federal agencies on matters regarding the project development process for specific transportation projects.

Alignment - The horizontal or vertical ground plan of a roadway. Alignments are usually described by grades, coordinates, bearings, and curve lengths.

Alternative - One of a number of specific transportation improvement proposals, alignments, options, or design choices.

Assessment of Feasible Alternatives - Development and analysis of a limited number of feasible alternatives to decide which alternatives avoid or minimize impacts while meeting the project’s purpose and need. There must be a reasonable range of alternatives considered for any given project and a discussion of why some were selected for detailed study and explain why other alternatives were eliminated.

Average Daily Traffic - The average number of vehicles that pass a specified point during a 24-hour period.

Base Map - 1) A map of the project’s study area showing topography, roads, streams, project limits, Red Flags, and other items of interest. 2) In CADD, a file containing information for the project area, which is referenced into sheet files showing specific portions of the project.

Biological Assessment - A report documenting whether federally-funded major construction activities are likely to adversely affect federally-listed species or designated critical habitat, jeopardize the continued existence of species proposed for federal listing, or adversely modify proposed critical habitat, with the outcome determining whether formal or informal consultation with the United States Fish and Wildlife Service is necessary.

Categorical Exclusion - A determination that an action does not have a significant effect on the environment and is exempt from requirements to prepare an Environmental Impact Statement.

Certified Traffic - Opening year and design year traffic projections with K, D, T24, and TD values provided or approved by the Office of Technical Services as the official traffic forecasts used for, but not limited to, geometric and pavement design.

Clean Air Act Amendments - Federal legislation mandating programs to curb acid rain, urban air pollution, and toxic air emissions. The Clean Air Act Amendments call for emission reduction measures in air quality non-attainment areas.

Clean Water Act - Federal law that protects our nation's waters, including lakes, rivers, aquifers, and coastal areas. Sections 401 and 404 of the Clean Water Act pertain to the discharge of materials into surface waters, including wetlands. Section 401 also mandates the National Pollutant Discharge Elimination System (NPDES), in which a permit is required to discharge pollutants from a point source into surface waters (including wetlands) for disposal purposes.

Clear Zone - The roadside border area, starting at the edge of the traveled way, available for safe use by errant vehicles. The desired width is dependant upon traffic volumes and speeds, and on the roadside geometry.

Conceptual Alternative Solutions - Alternatives, including modal options, that are developed during the planning process based on on a minimal level of design and environmental information. These alternatives are only defined to the level of design concept and design scope.

Conceptual Alternatives Study - Development and analysis of conceptual alternatives during Step 5 of the Major PDP to determine which alternatives can be eliminated from further study based on environmental or engineering concerns.

Conceptual Mitigation Plans - The early, generalized identification of design, operational, or construction measures that would minimize or avoid anticipated adverse environmental consequences.

Concurrence - When participants feel satisfied with the process. They feel their concerns have been heard; they understand the facts, feel the decision-making process is reasonable, and the alternatives and tradeoffs make sense.

Coordination Point - Point(s) in the PDP where coordination with resource agencies, stakeholders, or the public occurs and consensus may be reached regarding recommendations for further project development.

Consensus - When all members of a group agree that their major interests have been taken into consideration and addressed in a satisfactory manner. It means that most of the participants can live with the decision or recommendation and that it represents the best choice even if not everyone agrees with the specific recommendation.

Constructability Review - A review of the construction plans that focuses on construction means and methods; including: equipment access, construction timeframes, construction phasing, bid-ability, and build-ability.

Construction Limits - Lines shown on a plan view which show the lateral extent of the work; including room for construction activities.

Contract Addenda - The official record of pre-bid questions and responses.

Contract Documents - Written material and engineering data required to put a highway construction project under contract; including: proposals, agreements, plans, specifications, estimates, and other information pertaining to the manner and method of furnishing materials.

Coordination - A process whereby ODOT contacts, consults, and maintains communication with regulatory agencies to facilitate project development.

Critical Path Method - A planning, scheduling and control technique that uses individual tasks, their durations and interrelationships to determine optimal sequencing of activities.

Cross Section - A vertical section of ground suitable for showing proposed grading and underground features.



ADT Average Daily Traffic
AFA Assessment of Feasible Alternatives
AUMIRA Abandoned Underground Mine Inventory and Risk Assessment
BA Biological Assessment
BDM Bridge Design Manual
BMP Best Management Practice
BMS Bridge Management System
BO Biological Opinion
BUSTR Bureau of Underground Storage Tank Regulation
CAA Clean Air Act
CAAA Clean Air Act Amendments
CADD Computer-Aided Daft and Design
CAS Conceptual Alternatives Study
CE Categorical Exclusion
CFR Code of Federal Regulations
CMAQ Congestion Mitigation and Air Quality
CMS Construction and Materials Specifications
CMS Construction Management System

County, Route and Section
CWA Clean Water Act