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Regulatory Update South Coast Air Quality Management District. California Desert Air Working Group Conference October 8 & 9 , 2014 Pala, California Mohsen Nazemi, P.E. Deputy Executive Officer. SCAQMD Regulatory Update. 2014 New Rules/Compliance Deadlines for Criteria Pollutants - PowerPoint PPT Presentation
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Regulatory Update South Coast Air Quality
Management District
California Desert Air Working Group ConferenceOctober 8 & 9 , 2014
Pala, California
Mohsen Nazemi, P.E.Deputy Executive Officer
2
SCAQMD Regulatory Update2014 New Rules/Compliance Deadlines for Criteria
PollutantsRule 444 – Open Burning at Beaches (PM)Rule 461 – Above Ground Gasoline Storage Tank (VOCs)Rule 1110.2 – Internal Combustion Engines (NOx/CO/VOCs)Rule 1111 – NG Fired Central Furnaces (NOx)Rule 1113 – Architectural Coatings (VOCs)Rule 1114 – Refinery Coking Operations (VOCs)Rule 1146/1146.1 – Boilers/Steam Generators/Heaters
(NOx)Rule 1147 – Other Miscellaneous Sources (NOx)Rule 1155 – Particulate Matter Control Devices (PM)
3
SCAQMD Regulatory Update2014 New Rules/Compliance Deadlines for ToxicsRule 1420.1 – Lead Acid Battery Recycling (Lead,
Arsenic, etc.)Rule 1472 – Diesel Fired Emergency Standby
Engines(Diesel PM)
2014/15 Proposed RulesRule 1430 – Metal Grinding Operations (Nickel,
Chrome, etc. metal dust)Rule 415 – Rendering Operations (Odors)Rule 1148.1 – Oil & Gas Production / Fracking
Operations
4
SCAQMD Other UpdatesExide Technologies – Lead Acid Battery RecyclingAllenco Energy, Inc. – Oil & Gas ProductionRidgeline RDX – Commercial Wastewater
TreatmentHixson – Metal Finishing Operations
Port of LA FireSalton Sea H2S ReleasesAdopted a Drought Management & Water
Conservation Plan
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Multiple Air Toxics Exposure Study (MATES IV) - Draft Report
Provide the public with information on toxic exposure and risk
Evaluate progress in reducing air toxics exposure
Provide direction to future toxics control programs
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MATES Background
MATES I: 1987MATES II: 1998-99MATES III: 2004-2006MATES IV: 2012-2013
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Key ComponentsMonitoring
Added black carbon & ultrafine particle countsImproved analysis methodsPAH at selected sites
Emissions inventoryBased on latest 2012 AQMP inventory
ModelingConsistent with AQMP modeling platformExtended to include Coachella Valley
Technical Advisory Group Input on study plan and draft report
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MATES IV Monitoring Sites10 sites, every 6th day, July 2012 – June 2013
F o n t a n a
Rubidoux
Wilmington
Pico Rivera
Sun Valley
San Bernardino Industry
Compton
Burbank
Anaheim
Inland Valley S.B.
Rubidoux
W. Long Beach N. Long Beach
Pico Rivera Central Los Angeles
Huntington Park
Substances MeasuredAcetaldehyde Dichloroethane Organic Carbon (OC)
Acetone Elemental Carbon (EC) PAHs
Arsenic Ethyl Benzene Perchloroethylene
Benzene Formaldehyde PM2.5
Black Carbon (BC) Hexavalent Chromium PM10
1,3-Butadiene Lead Selenium
Cadmium Manganese Styrene
Carbon Tetrachloride Methylene Chloride Toluene
Chloroform Methyl ethyl ketone Trichloroethylene
Copper MTBE Ultrafine Particles (UFP)
Dibromoethane Naphthalene Vinyl Chloride
Dichlorobenzene Nickel Xylene
Zinc9
10
Summary of Major MATES IV FindingsCancer Risk has decreased more than 50%
between MATES III (2005) and MATES IV (2012)Monitoring, inventory, and modeling approaches all
produce similar resultsWhile Diesel PM exposure decreased by ~70%, it
still dominates the overall cancer risk from air toxics
Highest risk areas near ports and transportation corridors
Risk from other air toxics continue to decline, with limited exceptions
Ultrafine Particle measurements show higher levels in areas with higher population and traffic density
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MATES IV Monitored Air Toxics RiskEstimated basin
wide lifetime air toxics risk 418 per million
65% overall risk reduction from MATES III based on monitoring
Mobile sources account for 90% of air toxics risk
Diesel accounts for 68% of air toxics risk
68.2%
8.4%
7.8%
5.0%
10.6%
MATES IV Air Toxics Risk
Diesel PM
Benzene
1,3 Butadiene
Carbonyls
Other
Basinwide Risk: 418 per millionBased on Average at 10 Fixed Monitoring sites
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0
200
400
600
800
1000
1200
1400
1600
III IV III IV III IV III IV III IV III IV III IV III IV III IV III IV III IV
Anaheim Burbank Central LA Compton Inland Valley S.B.
Huntington Park
North Long Beach
Pico Rivera Rubidoux W. Long Beach
Sites Average
Diesel PM Benzene 1,3 Butadiene Carbonyls Other
Risk per Million
Monitored Air Toxics Risk by Site: MATES III vs. IV
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MATES IV Inventory-Based Risk Reductions(potency weighted)
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MATES III Modeled Air Toxics Risk
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MATES IV Modeled Air Toxics Risk
Basin and Port Area Population-Weighted Modeled Cancer Risk
Region
MATES IV MATES IIIAverage Percenta
ge Change in Risk
2012 Populatio
n
Average Risk(Per
Million)
2005 Populatio
n
Average Risk(Per
Million)
Basin15,991,15
0 367 15,662,620 853 -57
Ports Area 998,745 480 959,761 1,415 -66
Basin Excluding Ports Area
14,992,806 359 14,702,85
9 816 -56
Highest Grid Cell Risk 1,057
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CA Office of Environmental Health Hazard Assessment Updated Risk Assessment Methodology
Considers childhood susceptibility to carcinogen exposureUpdates age-specific breathing ratesReduces residential exposure period from 70 to 30 yearsNet effect:
Inhalation carcinogenic risk may increase by a factor
of about 2.7 for the same exposure concentrationActual carcinogenic risk still down by more than 50%
New guidelines under review, expected to be finalized by
1st quarter 2015
CAVEAT
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MATES IV Modeled Risk with Proposed OEHHA Methodology
Inhalation Risks go up by factor of about 2.7
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Summary/Policy ImplicationsContinued and substantial progress in reducing
exposure to air toxicsResidual risks from air toxics still unacceptably
high, and higher than we previously estimated given the revised OEHHA methodology
Diesel particulate exposure substantially reduced, but still the major contributor to air toxics risk, concentrated near ports and transportation corridors
Importance of continued reduction in mobile source emissions in order to achieve toxics reductions and federal standards
20
Next StepsReleased Draft MATES IV Report
for 90-day public review (10/03/14)Draft Report , technical
appendices, and interactive risk map available on AQMD web site
Final Report: Spring 2015Update AQMD’s Air Toxic Control
Plan as part of the 2016 AQMP
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