1. REGIONAL HAZE Progress Report IASC Meeting Clovis, California ♦ April 1-2, 2008 Air Resources Board California Environmental Protection Agency

2. CALIFORNIA CLASS 1 AREAS 1. Redwood National Park 2. Marble Mountain Wilderness 3. Lava Beds National Monument 4.South Warner Wilderness 5. Thousand Lakes Wilderness 6. Lassen Volcanic National Park 7. Caribou Wilderness 8. Yolla Bolly Middle Eel Wilderness 9. Point Reyes National Seashore 10. Ventana Wilderness 11. Pinnacles National Monument 12. Desolation Wilderness 13. Mokelumne Wilderness 14. Emigrant Wilderness 15. Hoover Wilderness 16. Yosemite National Park 17. Ansel Adams Wilderness 18. Kaiser Wilderness 19. John Muir Wilderness 20. Kings Canyon National Park 21. Sequoia National Park 22. Dome Land Wilderness 23. San Rafael Wilderness 24. San Gabriel Wilderness 25. Cucamonga Wilderness 26. San Gorgonio Wilderness 27. San Jacinto Wilderness 28. Joshua Tree National Park 29. Agua Tibia Notes: The 17 IMPROVE monitors provide pollutant concentration measurements in or near California’s 29 Class 1 areas, so some data is the same for more than one Class 1 area in California. There are 156 Class 1 Areas in the United States.

3. OVERVIEW RH SIP Requirements and Progress What Pollutants Drive Haze in California Ability to Control Sources of Pollutant Species California Strategy for Initial Planning Period California and National Issues Statewide Average Contribution to Light Extinction on Worst Haze Days

4. BASIC REQUIREMENTS Deciviews 2004 2064 2018 Best Day Baseline Conditions Worst Day Baseline Uniform Glide Path RH SIP sets Reasonable Progress Goals for 2018 Deciviews 2064 Best Day Baseline Conditions Worst Day Baseline Uniform Glide Path RH SIP sets Reasonable Progress Goals for 2018 2064 Best Day Baseline Conditions (must not be degraded) Worst Day Baseline Uniform Glide Path Worst Days Average for Natural Conditions RH SIP sets Reasonable Progress Goals for 2018 Calculate Best and Worst Days in Deciviews Determine 2018 Reasonable Progress Goals in Deciviews “Long Term Strategy” for reaching 2018 RPGs BART Requirement (Best Available Retrofit Technology) Consultation with Other States / Federal Land Managers Public Webcast Workshop scheduled June 10, 2008 Submission to U.S. EPA after Public Hearing (July 2008) Mid-Course Reviews and SIP Updates every 10 years

5. MONITOR DATA & DECIVIEWS Species Mass  Light Extinction  Deciview Value Haze Algorithm II calculates light extinction Deciview is the natural logarithm of light extinction As Haze Species concentration increases, Light Extinction increases, Visibility worsens, Deciview number increases Reduce Haze Species, Deciview number decreases, clearer air with higher range of visibility Bottom line: reduce haze species “drivers” of worst day haze –Determine drivers at each IMPROVE monitor (Class 1 Area) and figure out where sources are –Model to look back at emissions and look forward to 2018

6. Haze Algorithm Tutorial: Measuring Visibility 1.Haze pollutants are particles that have the ability to absorb and reflect light radiation; both actions extinguish light and decrease visibility. Particle mass, humidity, and temperature influence the amount of light extinction caused by haze species. Rayleigh scattering is affected by elevation and temperature. 2.The “HAZE ALGORITHM” uses Species Mass  to determine Light Extinction  which is converted to a Deciview Value. 3.Every third day, 24-hour mass measurements are made of all the haze species collected at each IMPROVE monitor and the Haze Algorithm is used to deliver individual species and total species Light Extinction in inverse megameters (Mm -1 ). 4.The Haze Algorithm for calculating Light Extinction (bext) weights the Species Mass (ug/m 3 ) measured at the IMPROVE monitors using particle size, humidity, and elevation as follows: bSulfate = 2.2 x fS(RH) x [small SO4] + 4.8 x fL(RH) x [large SO4] bNitrate = 2.4 x fS(RH) x [small NO3] + 5.1 x fL(RH) x [large NO3] bOrganic Material Carbon = 2.8 x [Small OM] + 6.1 x [Large OM] bElemental Carbon = 10 x [EC] bFine Soil = 1 x [Fine Soil] bSea Salt = 1.7 x fSS(RH) [Sea salt] bCoarse Mass = 0.6 x [CM] bRayleigh = (Site Specific factor, related to elevation, ranging from 7+ to 11+ in California) bNitric Oxide gas= 0.33 x [NO2 (ppb)] (not measured at most IMPROVE sites.) The sum of the weighted extinction values gives the total daily extinction (Total bext) for each day of measurement: Total bext = bSulfate + bNitrate + bEC +bOMC + bSoil + bCM + bSS + bRay + bNO2 5.The deciview scale was created to describe the total light extinction capability of all haze species in the ambient air at a given time at a given location. The Deciview Value (dv) is the natural logarithm of the total calculated light extinction on each day of measurement. Mass measurements for all species must be available to calculate the dv for a given day. Deciview Value (dv) = 10 ln (Total bext / 10) 6.Each year, the daily Deciview Values are ranked for the entire year and the 20% highest days are averaged to obtain the “Worst Day” deciview average for that year. The average Worst Day Deciview Value for each of the baseline years are then averaged to get the Baseline “Worst Day” Deciview Value for the monitor. The same process is undertaken to calculate the 20% “Best Day” deciview average using the lowest ranking days (cleanest, best visibility) for the baseline. 7.These “Worst Day” and “Best Day” average Deciview levels are used to develop the Long-Term Strategy and Reasonable Progress Goals for the Regional Haze SIP.

7. GEOGRAPHIC OVERVIEW Far Northern California (Inland) -organics, sulfates, nitrates Sierra Nevada Mountains -organics, sulfates, nitrates Coastal Sub-Units -sea salt, sulfate, nitrate, organics Southern California -nitrates, organics, sulfates Closest Neighbor Class 1 Areas -Arizona (Grand Canyon…) -Oregon (Kalmiopsis…) -Nevada (only Jarbridge) California C1A Out-of-State C1A IMPROVE monitor

8. MONITOR ASSIGNMENTS NORTHERN CALIFORNIA TRIN (1014 m)Trinity AlpsMarble Mountain Wilderness; Yolla Bolly-Middle Eel Wilderness LABE (1460 m)Lava BedsLava Beds National Monument, South Warner Wilderness LAVO (1733 m)Lassen VolcanicLassen Volcanic National Park, Caribou Wilderness, Thousand Lakes Wilderness SIERRA CALIFORNIA BLIS (2131 m)Bliss State ParkDesolation Wilderness, Mokelumne Wilderness HOOV (2561 m)HooverHoover Wilderness YOSE (1603 m)YosemiteYosemite National Park, Emigrant Wilderness KAIS (2598 m)KaiserKaiser Wilderness, Ansel Adams Wilderness, John Muir Wilderness SEQU (519 m)SequoiaSequoia National Park, Kings Canyon National Park DOME (927 m)Dome LandsDome Lands Wilderness COASTAL CALIFORNIA REDW* (244 m)RedwoodRedwood National Park PORE (97 m)Point ReyesPoint Reyes National Seashore PINN (302 m)PinnaclesPinnacles Wilderness, Ventana Wilderness RAFA (957 m)San RafaelSan Rafael Wilderness SOUTHERN CALIFORNIA SAGA* (1791 m)San GabrielSan Gabriel Wilderness, Cucamonga Wilderness SAGO (1726 m)San GorgonioSan Gorgonio Wilderness, San Jacinto Wilderness AGTI* (508 m)Agua Tibia JOSH (1235 m)Joshua TreeJoshua Tree National Park

9. NORTHERN CALIFORNIA TOTAL light extinction ~ 10 times higher on Worst Days Organic Carbon (OC) clearly drives Worst Days Wildfires, Transportation Corridors, Stationary Sources

10. SIERRA CALIFORNIA TOTAL light extinction ~ 6-12 x higher on Worst Days Organic Carbon or Nitrates drive worst days Wildfires and Biogenics (OC), Urban Mix (nitrates/sulfates) Coarse Mass and Fine Soil from wind events Monitor Elevation (exposure to inversions, long-range transport)

11. SOUTHERN CALIFORNIA TOTAL light extinction ~ 6-12 x higher on Worst Days Nitrates drive worst days; sulfates and organics also have roles Mobile sources (on and off-road) key component year-round Coarse Mass and Fine Soil from natural events Monitor Elevation (exposure to inversions, long-range transport)

12. COASTAL CALIFORNIA TOTAL light extinction ~ 4-7 x higher on Worst Days Sea Salt and Sulfates more influence than elsewhere Affected by marine commercial shipping Onshore – Offshore wind patterns; different source attribution for same haze species

13. EMISSIONS AND SOURCES California Statewide inventory of haze precursors (WRAP 2002c in Tons per Year) Organic Carbon sources primarily natural Nitrate sources primarily anthropogenic Does not include marine commercial vessel emissions

14. OTHER INFLUENCES TRANSPORT “Controllable vs. Uncontrollable” Out-of-StateIn-State Anthropogenic ~20%*~35%* Natural ~15%*~30%* * Numbers are rounded estimates of haze pollutant source origin based on source attribution modeling California RH SIP focuses on anthropogenic sources under state or local control

15. STRATEGY FOR 2018 population growth and climate change… urban/wildland interface pressures… new NAAQS standards… California “Long-Term” Strategy for Initial Planning Period –On-the-Books Ozone/PM Controls Modeled to give Reasonable Progress Goals for 2018 –BART Reductions minimal due to existing controls –Adjust at Mid-Course Review with more data and new post-2004 controls

16. CALIFORNIA’s BART PROCESS

17. PRELIMINARY REASONABLE PROGRESS Baseline Modeling Results: Visibility improves at all California Class 1 Areas

18. MID-COURSE REVIEW Future Program Benefits from NAAQS, SAAQS, Climate Change, Goods Movement, Diesel Risk Reduction Programs –Same pollutants involved –Same high-emitting source categories (refineries, power plants, cement plants, large boilers) Scheduled for 2012-2013 Time Frame –Emissions Reductions compared to Monitoring Data –Natural Conditions Assessment –May Adjust Reasonable Progress Goals

19. RH SIP as Learning Experience –BART reductions await final modeling –Regional cooperation essential –Continued consultation valuable Controllable vs. Uncontrollable Sources –Wildfires, Dust Storms, and other Natural Events –Pacific Shipping / Oceanic Atmospheric Chemistry –Jet Stream Sources –International Transport (Mexico, Canada, Asia) –Organic Aerosols: Biogenic Emissions v. Anthropogenic VOCs Achieving Natural Conditions –Will EPA continue to Fund Monitoring & Technical Support? –Will metrics change for calculating Natural Conditions or visibility? –Will it take until the 23 rd Century? PENDING CONCERNS NASA Photo October 2007

20. OREGON CALIFORNIA Biscuit Fire Plume Umpqua Complex Fire Plume “SEEING” WILDFIRE PLUMES Inventory and Modeling for “Baseline” Period: 2002 “Base Year” was very bad year for western wildfire emissions Analyzing Monitoring Data for “Natural Conditions” analysis: Canoe and Honey Fires not “seen” by Redwood but measurable at Point Reyes and Trinity Alps monitors REDW PORE TRIN

21. “MEASURING” SMOKE IMPACTS John Muir Wilderness Webcam Big Creek Fire 13 miles SW 8/15 - 8/29/1994 picture taken at 3:00 PM on 8/27/1994 Exact same location: Scenic view picture taken at 3:00 PM on 9/21/1994 Need local knowledge and satellite photos –No IMPROVE monitors for John Muir Wilderness in 1994 –Neither YOSE > 150 miles NW, nor SEQU >50 miles SW saw OC change

22. October 25, 2003 From NASA/Goddard Space Flight Center Scientific Visualization Studio: http://svs.gsfc.nasa.gov/vis/a000000/a002800/a002842/ http://svs.gsfc.nasa.gov/vis/a000000/a002800/a002842/ Southern California Fires – October 2003 Photo of California wildfires from space, after the winds shifted toward Arizona and Nevada on October 29, 2003. Photo credit: NASA

23. northern el. 1469 m Sierra el. 1615 m coastal el. 953 m REGIONAL “DUST” EVENTS “Tax Day” Asian Windfall: April 16, 2001 Santa Ana Winds: Autumn and early winter Sundowners & Valley transport? AG SJ SGO SR CUSGA JT NASA image: February 9, 2002 southern el. 507 m

24. CARB Contacts: Tina Suarez-Murias csuarezm@arb.ca.gov Sylvia Zulawnickszulawni@arb.ca.gov Prepared by U.S. Census Bureau One dot = 7500 people FOR ADDITIONAL INFORMATION Websites for Regional Haze: ARB – www.arb.ca.gov/planning/reghaze/reghaze.htm WRAP – www.wrapair.org TSS – http://vista.cira.colostate.edu/tss/

25. YOSE (Yosemite): Yosemite National Park Emigrant Wilderness Millenium Fireworks Monitoring Data converted to Light Extinction showing Best & Worst Days for 2000- 2004 Basellne Period Annual Worst Days – Light Extinction Worst Days Monthly Average - 2002 PRELIMINARY DRAFT 4-1-08

26. YOSE (Yosemite): Yosemite National Park Emigrant Wilderness PRELIMINARY DRAFT 4-1-08 YOSE at Turtleback Dome, 1 mile west of Tunnel View

27. YOSE (Yosemite): Yosemite National Park Emigrant Wilderness Organic Carbon Sulfates Nitrates Source regions 2018 “On-the-Books Scenario Modeling: PRELIMINARY DRAFT 4-1-08 9-28-8210-9-82