Ozone season means the contiguous 3 month period during which ozone exceedances typically occur, i.e., June, July, and August.
User seal check or "fit check" means an action conducted by the respirator user to determine if the respirator is properly seated to the face. Examples include negative pressure check, positive pressure check, irritant smoke check, or isoamyl acetate check.
Junk yard means any property utilized for breaking up, dismantling, sorting, storing, distributing, buying or selling of any scrap waste material, junk or used equipment or machinery of any nature.
Winter Season means the period commencing on November 1 of any year and ending on the next succeeding March 31.
Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, blockage of bridge or culvert openings, and the hydrological effect of urbanization of the watershed.