Existing hydro would require no additional stream impoundments to continue operating. This pollution-free resource should be maintained and expanded where possible. Hydroelectric power which does not need huge dams should comprise an expanding part of the energy supply in a state with countless waterways. One of the greatest shortcoming is the failure of the utility to account for energy efficiency programs in its forecast. North Carolina's economy expanded during those decades.
Opacity is related to particulate pollution.
They are very effective at removing fine particles from the air and are in extensive use throughout the coal-fired electric utility industry. Toxic Air Pollution Toxic pollutants also result from the burning of thousands of tons of coal. Air toxins are inhaled by people and deposited on plants, soil, and water. The releases include hydrochloric acid, sulfuric acid, hydrofluoric acid, barium, manganese, copper, chromium, zinc, arsenic, nickel, ammonia, beryllium, chlorine, cobalt, lead, selenium and mercury. The true health impact of toxic pollutants will not be calculated because the industrial boilers are exempt from NC toxic air pollutant rules.