This includes determining the level of service to be provided by individual forecast offices to air pollution control agencies. In addition to the service for air pollution control agencies, field offices must be prepared to provide whatever assistance they can within their capabilities when dangerous contaminants could be or are accidentally released into the atmosphere. Depending upon the particular circumstances, a local, state, and Federal agency or a private interest may take charge of control or abatement efforts. There may be instances where the agency leading the abatement effort is not aware of the services which we can provide. If an office becomes aware of such a situation, an attempt should be made to contact the agency involved to discuss assistance that can be provided.
Overtime is authorized to provide the necessary meteorological support.
The regional headquarters should be immediately notified whenever such situations develop. The ASA is the only air pollution product which is normally issued. 4.1 Criteria for Issuance . The ASA, where used, is usually issued when locally established critical values of transport winds, mixing height, and ventilation are expected to persist for at least 36 hours. Use of an air stagnation check sheet is helpful in evaluating stagnation parameters.