Adverse impact means any deleterious effect on waters or wetlands, including their quality, quantity, surface area, species composition, aesthetics or usefulness for human or natural uses which are or may potentially be harmful or injurious to human health, welfare, safety or property, to biological productivity, diversity, or stability or which unreasonably interfere with the enjoyment of life or property, including outdoor recreation.
Adverse system impact means a negative effect that compromises the safety or reliability of the electric distribution system or materially affects the quality of electric service provided by the electric distribution company (EDC) to other customers.
Adverse impact on visibility means visibility impairment which interferes with the management, protection, preservation or enjoyment of the visitor's visual experience of the Federal Class I area. This determination must be made on a case-by-case basis taking into account the geographic extent, intensity, duration, frequency and time of visibility impairment, and how these factors correlate with (1) times of visitor use of the Federal Class I area, and (2) the frequency and timing of natural conditions that reduce visibility.
Adverse Proceeding means any action, suit, proceeding (whether administrative, judicial or otherwise), governmental investigation or arbitration (whether or not purportedly on behalf of Holdings or any of its Subsidiaries) at law or in equity, or before or by any Governmental Authority, domestic or foreign (including any Environmental Claims), whether pending or, to the knowledge of Holdings or any of its Subsidiaries, threatened against or affecting Holdings or any of its Subsidiaries or any property of Holdings or any of its Subsidiaries.
Adverse Environmental Condition means (i) the existence or the continuation of the existence, of an Environmental Contamination (including, without limitation, a sudden or non-sudden accidental or non-accidental Environmental Contamination), of, or exposure to, any substance, chemical, material, pollutant, Hazardous Substance, odor or audible noise or other release or emission in, into or onto the environment (including without limitation, the air, ground, water or any surface) at, in, by, from or related to any Equipment, (ii) the environmental aspect of the transportation, storage, treatment or disposal of materials in connection with the operation of any Equipment, or (iii) the violation, or alleged violation, of any Environmental Law, permits or licenses of, by or from any governmental authority, agency or court relating to environmental matters connected with any of the Equipment.