Environmental Impact Evaluation – the assessment of the environmental consequences (positive and negative) of a plan, policy, program, or actual projects prior to the decision to move forward with the proposed action.


State of Connecticut Office of Policy and Management

You can find more information on the OPM website.


A collection of GIS data and/or orthorectified imagery that form the background setting for a map.


A data storage format for geospatial vector data to use in GIS software.

open space

Any open piece of land set aside for preserving natural communities, protecting water quality, providing outdoor recreation, and offering green spaces for all residents.  Parcels can be undeveloped or have no buildings or other built structures, and/or is accessible to the public.  Local governments can define open space differently depending on their zoning laws.


The way governments control the physical development of land and the kinds of uses to which each individual property/parcel may be put.

land use

The function of land; how is the land being used.


A linear orientation of transport routes and flows connecting important locations that act as origins, destinations or points of transshipment. They can be composed of streets, highways, transit routes, or rail lines.

multi-use trail

A path physically separated from motor vehicle traffic by an open space or barrier and either within a public right of way or easement, which accommodates two-way non-motorized travelers including pedestrians, bicyclists, joggers, and skaters.


A property/parcel, of which expansion, redevelopment, or reuse may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.