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Show C. ENVIRONMENTAL IMPACTS OF PROPOSED ACTION Introduction This section discusses qualitatively and quantitatively the impacts that are expected to result from construction and operation of the Bonneville Unite The environmental impacts are discussed for each feature and then discussed collectively, particularly as they influence the statewide situation,, The analysis of feature impacts are separated into two main categories- completed or partially completed features and proposed featureso Impacts may be beneficial, adverse, questionable, or unknown0 They may also be temporary or permanent and when considered collectively a series of actions can have a cumulative impact of broad significance. The definitions of these terms, as used in this statement, are given below: ac Beneficial impacts are those that are expected to either directly or indirectly improve the environment or the use of the environment; b. Adverse impacts are those that are expected to either directly or indirectly degrade the environment or interfere with the use of the environment; c. Questionable impacts are those which have known effects, but are not universally accepted as being beneficial or adverse; d. Unknown impacts are those having effects which cannot or have not yet been determined; e* Temporary impacts are those which would occur over a short time frame and would usually be associated with the construction phase of the Unit. Adverse impacts of this type are conducive to successful application of mitigation measures; f• Permanent impacts are those which would remain after all phases of the Unit plan have been carried out; and g. Cumulative impacts are those which, taken collectively, can have an impact which may be different and/ or greater in magnitude and scope than any of the individual impacts. This statement attempts to recognize that the Bonneville Unit would impact a multiplicity of physical, chemical, biological, ecological, and human environs and tries to describe and discuss 211 |