Section 783.18 - Climatological information(a) When requested by the regulatory authority, the application shall contain a statement of the climatological factors that are representative of the proposed permit area, including-(1) The average seasonal precipitation;(2) The average direction and velocity of prevailing winds; and(3) Seasonal temperature ranges.(b) The regulatory authority may request such additional data as deemed necessary to ensure compliance with the requirements of this subchapter.44 FR 15363, Mar. 13, 1979, as amended at 45 FR 51550, Aug. 4, 1980; 81 FR 93330 , Dec. 20, 2016; 82 FR 54956 , Nov. 17, 2017