Educational Material on Visibility Science and Regulations 

Introductory and educational material on Visibility science, issues and Laws and Regulations.

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Visibility Issues and Science

Monitoring Changing Air Quality in the Edwin B. Forsythe NWR

An interactive tutorial guiding the user through air quality monitoring instruments and air quality issues impacting the Edwin B. Forsythe NWR and Brigantine WA.  This is the same tutorial available at a kiosk at the refuge.

This tutorial requires the Adobe Flash Player plug in which can be found here.

Reactive Nitrogen Cycling Through the Atm. & Ecosystem

This interactive tutorial presents the cycling of reactive nitrogen through our environment, showing basic concepts such as reactive nitrogen's sources, its effects while in the atmosphere, and the consequences of its deposition into our environment.

 This tutorial requires the Adobe Flash Player plug in which can be found here.

AQ in Sequoia Kings Canyon NP

An interactive tutorial guiding the user through air quality issues impacting Sequoia Kings Canyon National Park.  This is the same tutorial available from kiosks at Sequoia Kings Canyon's visitor center.  This tutorial requires the Adobe Flash Player plug in which can be found here.

Introduction to Visibility

A pictorial guide to visibility starting from the fundamental principles for visibility impairment and causes of regional haze to aerosol concentration and trends.   Many of the concepts are dynamically illustrated using animated figures.

Exploring Visibility Concepts

An interactive tutorial that guides the user through a number visibility concepts and issues including the impact that haze has on a scene, the nature of light and how it colors what we see, particulate matter that comprises the haze and regulations addressing haze issues.  This tutorial requires the Adobe Flash Player plug in which can be found here.

  Visibility Trend Report - This document is the visibility chapter from EPA's 1997 National Air Quality and Emissions Trends Report.  The report presents an overview of the visibility regulations, causes of visibility impairment and trends in visibility.

Glossary of Terms - Definitions of terms and phrases used in visibility science.

Regional Haze Workshops

WESTAR, NPS & EPA EOG Visibility Monitoring Data Analysis Workshop - Held at Colorado State University, August 2001

Regional Haze Rule - EPA Documents

 Regional Haze Guidance Documents- The Environmental Protection Agency, Draft Report, Reference Document for Regional Haze Tracking Progress Guidance is found here.

  Haze Rule Fact Sheet (PDF-27 KB) - Summary of the final regional haze rule, June 6, 1999.

  Regional Haze Rule (PDF-590 KB) - The final regional haze rule and preamble as it appeared in the April 1999 Federal Register.

  Complete Visibility Protection Rule (PDF-78 KB) - EPA's full visibility protection regulations, which consolidate EPA's 1980 visibility regulations and 1999 regional haze rule.

  Rule Development Timeline (PDF-8 KB) - Timeline indicating key milestones between 1977 and 1999.

  State Implementation Milestones (PDF-12 KB) - Timeline for state implementation activities, beginning in 1999.

Class I Areas Protected Under the Regional Haze Program

bullet  List of the National Parks and Wilderness Areas
bullet  Map of the National Parks and Wilderness Areas
bullet  Map of the parks managed by the National Park Service
bullet  Map of the wilderness areas managed by the U.S. Forest Service
bullet  Map of the wilderness areas managed by the Fish and Wildlife Service