• Air Quality

Potential At-Risk Maps and Information

The following are the potential at-risk maps produced during the Arkansas Resource Assessment - Phase I. The NRCS definition of the natural resource concern and the input layers and land use designation weights that were used for modeling the natural resource concerns within the Air Quality Resource Concern are listed to the right of each map. More detailed maps are available by clicking the link below each map. None of the natural resource concerns under the Air Quality Resource Concern were selected for Priority Area designation at this time.



Larger Map: View or Download

















Larger Map: View or Download




Larger Map: View or Download






Larger Map: View or Download
Particulate Matter

    NRCS Definition:
        Direct emissions of particulate matter (dust and smoke), as well as the
        formation of fine particulate matter in the atmosphere from other agricultural
        emissions (ammonia, NOx, and VOCs) cause multiple environmental
        impacts, such as:
            - The unintended movement of particulate matter (typically dust or
              smoke) results in safety or nuisance visibility restriction.
            - The unintended movement of particulate matter and/or chemical
              droplets results in unwanted deposits on surfaces.
            - Increased atmospheric concentrations of particulate matter can impact
              human and animal health and degrade regional visibility.

    Land Use Designation Weights:
        Crop (Weight 2); Forest, Range, Pasture, Urban, and
        Assoc. Ag (Weight 1); Water (Weight 0)

    Binary Input Layers and Associated Weights:
        – Aerial Applied Chemicals/Dust (Cropland) (Weight 1)
        – SSURGO Wind Erodibility Group = Classes 1 and 2 (Weight 2)
        – Federal Class 1 Lands (Weight 1)
        – 8-hour Non-Attainment Areas (Weight 1)



Emissions of Greenhouse Gases

    NRCS Definition:
        Emissions increase atmospheric concentrations of greenhouse gases.

    Land Use Designation Weights:
        Crop, Forest, Range, Pasture, Urban, and
        Assoc. Ag (Weight 1); Water (Weight 0)

    Binary Input Layers and Associated Weights:
        – Federal Class 1 Lands (Weight 1)



Emissions of Ozone Precursors

    NRCS Definition:
        Emissions of ozone precursors (NOx and VOCs) resulting in  formation of 
        ground-level ozone that cause negative impacts to plants and animals.

    Land Use Designation Weights:
        Crop, Forest, Range, Pasture, Urban, and
        Assoc. Ag (Weight 1); Water (Weight 0)

    Binary Input Layers and Associated Weights:
        – Federal Class 1 Lands (Weight 1)
        – 8-hour Non-Attainment Areas (Weight 1)



Objectionable Odors

    NRCS Definition:
        Emissions of odorous compounds (VOCs, ammonia, and odorous sulfur    
        
compounds) cause nuisance conditions.

    Land Use Designation Weights:
        Crop, Forest, Range, Pasture, Urban, and
        Assoc. Ag (Weight 1); Water (Weight 0)

    Binary Input Layers and Associated Weights:
        – Federal Class 1 Lands (Weight 1)

    Classified Input Layers and Associated Weights:
        – Acres of Manure Applied by County
            < 8,500 (Weight 0)
            8,500 – 13,700 (Weight 1)
            14,000 – 26,000 (Weight 2)
            28,000 – 50,000 (Weight 3)
        – Number of Animal Units by County
            < 25,000 (Weight 0)
            25,000 – 60,000 (Weight 1)
            70,000 – 100,000 (Weight 2)
            125,000 – 190,000 (Weight 3)

Ċ
Hanna Ford,
Dec 2, 2011, 6:40 AM
ċ
AirQuality_At-RiskMaps.zip
(1491k)
Hanna Ford,
Oct 9, 2011, 8:07 PM
Comments