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What about the Haze Obscuring our Mountains – Is the View Getting Clearer? . Bill Jackson Air Resource Management Specialist USDA Forest Service Asheville, NC. The Goal By 2064.
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What about the Haze Obscuring our Mountains – Is the View Getting Clearer? Bill Jackson Air Resource Management Specialist USDA Forest Service Asheville, NC
The Goal By 2064 • In Section 169A of the 1977 Amendments to the Clean Air Act (CAA), our Nation set forth a program for protecting visibility in Class I areas which call for the “prevention of any future, and the remedying of any existing, impairment of visibility in mandatory Class I Federal areas which impairment results from manmade air pollution.”
The Goal – Haziest Days 73 Miles
The Goal – Best Days 121 Miles
Shining Rock Wilderness Fine Particle Concentrations Concentration (ug/m3)
98% Relative Humidity Average Fine Particle Mass 90% Reduction In Sulfates Sulfate Reduction
The Path – Haziest Days 14 miles 73 miles
Visibility Is Improving –Haziest Days Shining Rock Linville Gorge
Current Situation – Haziest Days 14 miles 18 miles
Current Situation -- Haziest Days 14 miles 18 miles
One More Time - Haziest Days 18 miles 14 miles
Why Is Visibility Improving? • North Carolina Clean Smoke Stacks Act • Tennessee Valley Authority (settlement agreement with EPA) • Continued implementation of the Clean Air Interstate Rule • Best Available Retrofit Technology (BART) • Conversion from coal to natural gas