«State of Nevada Division of Environmental Protection 901 South Stewart Street, Suite 4001 Carson City, Nevada 89701 NOVEMBER 18, 2014 This page is ...»
NEVADA REGIONAL HAZE
5-YEAR PROGRESS REPORT
Sections 308(g), (h) and (i)
of the Regional Haze Rule
(40 CFR § 51.308)
State of Nevada
Division of Environmental Protection
901 South Stewart Street, Suite 4001
Carson City, Nevada 89701
NOVEMBER 18, 2014
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NOTE TO READERS
Nevada’s Regional Haze 5-Year Progress Report was developed for submittal to the U.S.
Environmental Protection Agency under Section 308 of the Regional Haze Rule (40 CFR § 51.308) as a revision to the applicable Nevada state implementation plan (SIP). 40 CFR § 51.308(g) requires periodic reports every five years after the initial regional haze SIP was submitted. This report satisfies the first 5-year progress report requirement. The report is based on data that existed as of March 1, 2014.
Nevada’s Regional Haze 5-Year Progress Report and related documents can be found on the following website: http://ndep.nv.gov/baqp/planmodeling/rhaze.html. Western Regional Air
Partnership (WRAP) reports and documents can be found on the following websites:
http://www.wrapair2.org/ or at the WRAP TSS website: http://vista.cira.colostate.edu/tss/.
Nevada has chosen to link to websites on the internet for many references cited in this report.
We have backed up these links by putting electronic copies of reference documents on the Nevada Division of Environmental Protection’s (NDEP) server. If any of the links in this document do not work for you, you may contact the NDEP Bureau of Air Quality Planning at 901 South Stewart Street, Suite 4001, Carson City, Nevada 89701 or by telephone at 775-687- 9349 for assistance.
This document was written by the following staff of the NDEP, Bureau of Air Quality Planning:
Principal Authors Frank Forsgren Brenda Harpring Adele Malone, Supervisor Contributing Staff Patricia Bobo Reviewers Jasmine Mehta, Chief, Bureau Air Quality Planning Rob Bamford, Chief, Bureau Air Pollution Control The supporting technical information in this plan was assembled with the assistance of the WRAP and their consultants.
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EXECUTIVE SUMMARYIn 1977, Congress amended the Clean Air Act (CAA) to establish a national goal to protect visibility in Class I federal areas – national parks, forests and wilderness areas. The amendments called 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.” CAA § 169A. In Nevada, one area was designated: the Jarbidge Wilderness Area (Jarbidge WA) in the northeast corner of the state.
On July 1, 1999, the U.S. Environmental Protection Agency (USEPA) adopted the Regional Haze Rule (RHR). The RHR requires each affected state to develop and adopt an implementation plan that will improve the haziest days and protect the clearest days at each mandatory Class I area in the state with a goal of returning to natural visibility conditions by the year 2064. Each plan must provide a comprehensive analysis of natural and man-made sources of haze in each mandatory Class I area in the state and contain strategies to control anthropogenic emissions that contribute to haze. The plan must also address the transport of haze across state boundaries. The Nevada Regional Haze State Implementation Plan (2009 RH SIP), which addressed the initial planning period in the federal rule (2008 to 2018), was submitted to the USEPA on November 18, 2009. A comprehensive SIP revision is due on July 1, 2018 and every ten years thereafter.
USEPA’s regional haze regulations also include provisions for 5-year progress reports. These progress reports must provide an assessment of whether the approved SIP is being implemented appropriately and whether reasonable visibility progress is being achieved consistent with the projected visibility improvement in the SIP. The requirements for these reports are found in Title 40 of the Code of Federal Regulations (CFR) Part 51 Sections 308 (g) and (h). Requirements for state and federal land manager (FLM) coordination are found in Part 51 Section 308 (i).
As discussed in the introductory chapter of this report, in Nevada nearly three-quarters of the visibility-impairing pollutants come from natural sources. Emission inventory data for the baseline period show that sulfur dioxide, oxides of nitrogen and coarse mass (dust) are the predominant anthropogenic pollutants in Nevada. For sulfur dioxide, 97 percent of the emissions statewide came from anthropogenic sources; for oxides of nitrogen, 86 percent were anthropogenic; and for coarse mass, 38 percent were anthropogenic. Nevada’s long-term strategy for the first planning period focused on sulfur dioxide and nitrogen dioxide because they were the predominant anthropogenic pollutants and because of the controllable nature of these emissions. This report, therefore, focuses on the status of sulfur dioxide and nitrogen dioxide control measures and progress toward Nevada’s 2018 visibility improvement goal.
Nevada continues to reduce emissions of the key visibility impairing pollutants. Point source emissions of sulfur dioxide alone decreased by 78 percent from the baseline inventory to the
Although natural wildfire smoke and windblown dust persist as the strongest drivers of reduced visibility on worst days at the Jarbidge WA, Nevada’s strategies for reducing sulfur dioxide and oxides of nitrogen have lowered sulfate and nitrate particle concentrations at the Jarbidge WA.
Monitored light extinction1 due to both sulfate and nitrate has decreased between the baseline and progress periods for both the worst days and the best days. Trend analyses of the period 2000 to 2012 for the Jarbidge WA show that visibility impairment due to sulfate and nitrate extinction is decreasing through time for both the worst and best days. Thus, the long-term strategy embraced in the 2009 SIP is working to reduce emissions to reach the reasonable progress goals for 2018, as required. In the comprehensive 2018 SIP revision, Nevada will evaluate sources of visibility impairment at Jarbidge WA and revise its long-term strategy for the 2018-2028 planning period, as appropriate.
Since the development of the 2018 emissions inventory for the 2009 RH SIP submittal, additional State and federal regulations and actions have been imposed on various source sectors.
These additional mandates will help ensure that reasonable progress goals are attained on or before 2018. In addition, the 2018 emissions projections included a coal-fired power plant that has since ceased operations and been decommissioned, and three proposed power plants whose permit applications have been withdrawn. These actions have led to substantial reductions in the actual and projected emissions of anthropogenic visibility-impairing pollutants from Nevada sources and will further ensure that reasonable progress goals are attained on or before 2018.
Finally, as discussed in Chapter Two, all of the facilities in Nevada that are subject to best available retrofit technology (BART) requirements are on schedule to meet those requirements by the State or federal implementation plan compliance dates.
Reducing haze is a regional effort and Nevada continues to work with the other western states and the federal land managers to plan for the required 2018 revision of its RH SIP. The states are focusing on strategies for continued reduction of controllable emissions. Quantification of the impacts of wildfire smoke and other sources beyond State regulatory jurisdiction will continue for the purposes of defining the burden these sources place on achieving visibility goals.
As evidenced by reductions in all of the controllable anthropogenic point source emissions that contribute to haze in Nevada and the concurrent downward trend of sulfate and nitrate light extinction at the Jarbidge WA monitor, Nevada determines the current regional haze plan strategies are adequate for Nevada to meet its 2018 visibility improvement goals. Based on an analysis of Nevada’s contribution to visibility impairment at nearby Class I areas, discussed in Chapters One and Six, and consultation with neighboring states, Nevada further concludes that 1 Light extinction, or the impairment of visibility, occurs due to particles and gases that reflect and absorb light. For a more complete description, see Chapter One of the 2009 RH SIP.
ACRONYMS, ABBREVIATIONS AND TERMS
LIST OF TABLES
LIST OF FIGURES
CHAPTER ONE: INTRODUCTION
1.1 Clean Air Act Requirements for Addressing Regional Haze
1.2 Requirements for Periodic Reports and Premises
1.3 Class I Areas in Nevada and Nearby
CHAPTER TWO: STATUS OF IMPLEMENTATION OF CONTROLMEASURES
2.1 Status Summary
2.2 Nature of the Visibility Problem in Nevada
2.3 Federal Programs
2.4 State Measures other than BART
2.5 Review of BART Determinations
CHAPTER THREE: SUMMARY OF EMISSION REDUCTIONS ACHEIVED
3.1 Status Summary
3.2 Overall NOx and SO2 Emission Reductions
3.3 NOx and SO2 Emission Reductions from Federal Programs
3.4 EGU NOx and SO2 Emission Reductions due to State Measures other than BART 3-3
CHAPTER FOUR: JARBIDGE: ASSESSMENT OF VISIBILITY CONDITIONS
4.1 Status Summary
4.2 Visibility Conditions
4.3 Current Visibility Conditions
4.4 Differences between Current and Baseline Conditions
4.5 Changes in Visibility Impairment
4.6 Visibility Trends
4.7 Effects of Outliers
CHAPTER FIVE: CHANGES IN EMISSIONS: ALL SOURCES WITHIN THESTATE
5.1 Status Summary
5.2 Baseline and Progress Periods for Tracking Emission Changes
5.3 Emissions from the 2002 Baseline Period
5.4 Emissions from the 2008 Progress Period
5.5 Emission Differences between the Baseline and Progress Periods
CHAPTER SIX: ASSESSMENT OF CHANGES IMPEDING VISIBILITYPROGRESS
6.1 Status Summary
6.2 Significant Emission Changes within Nevada
6.3 Non-Nevada Sources Impacting the Jarbidge Wilderness Area
6.4 Nevada’s Impacts on Nearby Class I Areas
CHAPTER SEVEN: ASSESSMENT OF CURRENT SIP STRATEGY FOR
MEETING REASONABLE PROGRESS GOALS
7.1 Status Summary
7.3 Emissions Analysis
7.4 Visibility Analysis
CHAPTER EIGHT: ASSESSMENT OF CURRENT MONITORINGSTRATEGY
CHAPTER NINE: DETERMINATION OF ADEQUACY, PROCEDURAL
REQUIREMENTS AND CONCLUSIONS
9.1 Determination of Adequacy
9.2 Procedural Requirements
REFERENCES APPENDIX A: Western Regional Air Partnership Regional Haze Rule Reasonable Progress Summary Report, June 28, 2013. Section 6.8 Nevada.
APPENDIX C: Federal Land Management Agency Comments and Nevada’s Responses APPENDIX D: Evidence of Public Participation; Public Comments and Nevada’s Responses