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• • Ji C ~~*O •~~~ lets p j Colorado Departnent yv.r, e~s~ues; nssstn~.cc :aoc=+r=. of Po6Gc Hnhh and Fnvitoomrnt SURFACE MINING Surface mines, including sand and grovel pits, borrow pits and quarries release dust from the removal of pit run material, storage piles, haul road traffic, material crushing and screening operations performed at surface mine sites. Dust is also known as particulate mutter and is regulated ns an Air Pollutant by the Colorado Department of Public Health and Environment, Air Pollution Control Division (Division), Particulate matter is classified into two size categories. Total Suspended Particulate (TSP) simply means ALL of the dust regardless of particle size. PM10 means all of the particles which are ten microns or smaller in size. Since PM10 particles are so small, they tend to stay in the lungs. As n result, PM10 is considered to be of greater health concern. Geographical Areas of Concern Colorodo is divided into attainment and nonattninment areas. Attainment menus that the area is in compliance with the Federal Clean Air Act. Nonattainment areas have exceeded the National Ambient Air Quality 5tnndard for a regulated pollutant. Nonattainment areas have more strict air pollution rules than nttninment areas. To find out i f your business is located in one of these areas, call the Air Pollution Control Division at (303) 692-3150. Many of the larger cites in Colorado are nonnttainment. Reporting requirements An APEN (Air Pollutant Emission Notice) is a form used to report o facility's emissions to the Division. The form titled Air Pollutant Emission Notice (APEN) and Control Plan for Fugitive Particulate Emissions is used for this purpose. Under the following conditions surface mine owners/operators ore required to file an APEN with the Division. The threshold for filing an APEN is dependant on whether the source is in an attainment or nonnttainment area. In nonattninment areas, an APEN must be filed if uncontrolled emissions of particulate matter equal or exceed one ton per year. In nttninment areas, the threshold for filing nn APEN is 2 tons per year of uncontrolled emissions. Uncontrolled emissions refers to the amount of emissions that occur prior to their treatment with an air pollution control measure. A source may obtain information regarding whether or not the emissions from a source requires reporting by cull the Air Pollution Control Division at 303 692-3150 or SBAP phone numbers listed below. The APEN has a place for the source to describe any air pollution control measures to be used.