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The CAA and the Federal Land Policy and Management Act of 1976 (FLPMA) require the BLM <br /> to ensure actions taken by the agency comply or provide for compliance with federal, state, <br /> tribal, and local air quality standards and regulations. FLPMA further directs the Secretary of the <br /> Interior to take any action necessary to prevent unnecessary or undue degradation of the lands <br /> [Section 302 (b)], and to manage the public lands "in a manner that will protect the quality of <br /> scientific, scenic, historical, ecological, environmental, air and atmospheric, water resource, and <br /> archeological values" [Section 102 (a)(8)]. <br /> Existing Regional Air Quality <br /> Air quality for any area is generally influenced by the amount of pollutants that are released <br /> within the vicinity and up wind of that area, and can be highly dependent upon the contaminants <br /> chemical and physical properties. Additionally, an area's topography or terrain(such as <br /> mountains and valleys) and weather(such as wind, temperature, air turbulence, air pressure, <br /> rainfall, and cloud cover) will have a direct bearing on how pollutants accumulate or disperse. <br /> Ambient air quality in the affected environment(i.e. compliance with the NAAQS) is <br /> demonstrated by monitoring for ground level atmospheric air pollutant concentrations. The <br /> APCD monitors ambient air quality at a number of locations throughout the state. The data is <br /> summarized by monitoring regions and CDPHE prepares an annual report (Annual Air Quality <br /> Reports) to inform the public about air quality trends within these regions. Similarly, several <br /> Federal Land Managers (FLMs) like the BLM, FS, and NPS, also monitor air quality for <br /> NAAQS and Air Quality Related Values (AQRVs) to meet organic act requirements. Table 3 <br /> below presents three years of monitoring data for criteria pollutants for KFO counties (or <br /> adjacent/representative county monitors where no monitoring exists in the KFO). The maximum <br /> monitoring value is presented where multiple monitors exist within a single county that monitor <br /> for the same pollutant. The "rank" of the concentrations are consistent with the standards form <br /> (see the "Form" column in Table 2 above), and the concentrations for each pollutant are for <br /> single year of monitored data. To compute the ozone design value (3 year average of the 4th <br /> highest 8-hour max) and other pollutant multiple year average concentrations, sum three <br /> consecutive years of data (if available) and divide by three. <br /> DOI-BLM-CO-N020-2017-0003 14 <br />