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Lost Hills Community MeetingStudy of Neighborhood Air near Petroleum
Sources (SNAPS)
October 29, 2018Wonderful Park Recreation Building
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Outline
• Introduction and Scope
• Air Pollutants
• Monitoring Equipment
• Monitoring Location
• Communicating Results
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What is SNAPS?
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Study of Neighborhood Air near Petroleum Sources
Study of air quality in neighborhoods as cumulative impact from all surrounding sources. Selected neighborhoods are close to oil and gas
extraction facilities.
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Motivation for SNAPS
• Exposure concerns raised by communities
• Aliso Canyon underground natural gas storage leak
• California Council on Science and Technology (CCST) recommendations
• Part of broader CARB effort to understand impacts of oil and gas operations
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SNAPS Scope
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Characterize air qualityin communities near oil and
gas operations
Identify emission sources as feasible
Analyze data for possible health risks
Toxic Air Contaminants (TACs)
Criteria Pollutants(particulate matter, carbon monoxide,
sulfur dioxide, ozone)
Volatile Organic Compounds (VOCs)
Methane
Metals
Major PollutantsProgram Goals
Hydrogen Sulfide
Glycols
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First Round Communities
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Lost Hills
McKittrick and Derby Acres
Baldwin Hills
South Los Angeles
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Related CARB Efforts
• Methane regulation
• Targeted air sampling at some well stimulation events (e.g. fracking)
• Oil and gas produced water (wastewater) pond research
• Statewide greenhouse gas network
• California Airborne Methane Survey
• Clean Air Protection Program (AB 617)
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Monitoring Scope
• Characterize air quality in communities near oil and gas production facilities• Criteria pollutants and air toxics
• Limited-term, intensive air quality monitoring• 3-4 months
• Evaluate measured concentrations using health-based guidance levels
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Air Pollutants Measured-with a focus on Toxic Air Contaminants-
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On
-Sit
e M
easu
rem
ents
Black carbon (BC)
Particulate Matter (PM2.5)
Hydrogen Sulfide (H2S)
Methane/Carbon Dioxide/Carbon Monoxide (CH4/CO2/CO)
Ozone (O3)
Speciated Volatile Organic Compounds (VOCs)
Dis
cret
e Sa
mp
les
Glycols
Sulfur-containing compounds
PAHs/Semi-volatile organics
Aldehydes
Speciated Volatile Organic Compounds (VOCs)
PM Bound Metals
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Stationary Trailer
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• Extensive air pollutant monitoring
• Pollutant speciation with sophisticated instrumentation
• Logistical requirements • Space/footprint
• Power
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Mobile Monitoring Vehicle• Community air pollutant screening
• Provide measurements as needed away from trailer
• Pollutants:
• Methane
• Carbon dioxide/monoxide
• BTEX
• Speciated VOCs (grab samples)
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Monitoring Discussion
• What are your air pollution concerns?
• Do you have questions about our monitoring approach?
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Possible Monitoring Sites
1. Lost Hills Union School District Office
2. Department of Water Resources
3. Wonderful Park
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Site #1: Lost Hills School District
• Western boundary of Lost Hills
• Adjacent to school
• < 1 mile from Lost Hills Oil Field
• Onsite traffic emissions
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Site # 2: Department of Water Resources
• Western/Central Lost Hills
• Location offers central community measurements
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Site # 3: Wonderful Park
• Eastern boundary of Lost Hills
• Possible community emissions from:
• Airport
• Traffic (e.g, Interstate 5)
• Agriculture
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Other Monitoring Sites?
• What suggestions do you have?
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Interstate 5
Proposed Site #1
Proposed Site #3
Proposed Site #2
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Data Availability
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Measurement Pollutants Time to Public Posting of Data
On-site InstrumentationCH4, H2S, O3, CO, CO2, PM2.5, black
carbon (BC) Hourly(1)
Discrete SamplesToxic air contaminants (TACs), non-
TAC VOCs and metalsWith published report(2)
(1) Results streamed hourly on project website.
(2) Report published 6 months following the completion of monitoring.
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Communicating Results• Hourly criteria pollutant data available
online
• Example visualizations
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Communicating Results
• Compare community air quality against regional air quality?
• Compare community air quality against Air Quality Index?
• Ideas for better communication?
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Further Analysis
• Health analysis
• Office of Environmental Health Hazard Assessment (OEHHA)
• Data analysis
• CARB
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OEHHA Evaluation of Potential Health Risks
• Relate short- and longer-term exposure levels to health-based guidance values
• Acute, 8-hour, chronic Reference Exposure Levels (RELs)
• Cancer potencies
• Characterize potential health risks
• Follow up on measured chemicals without existing guidance levels
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Emission Reductions
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If elevated pollutant levels found:
• Attempt to determine the source
If from oil and gas extraction, CARB could:
• Coordinate with SJVAPCD and DOGGR
• Work with operator to pursue solutions
• Explore broader solutions, as appropriate
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Resources and Contact Information
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• Project webpagehttps://ww2.arb.ca.gov/our-work/programs/study-neighborhood-air-near-petroleum-sources
•Visit project webpage to Subscribe and receive email updates
• Email us at [email protected] or call contacts below:
Events & General Project Questions Air Monitoring Technical Questions
Carolyn Lozo, Manager Walter Ham, ManagerProgram Assessment Section Advanced Monitoring Techniques SectionCalifornia Air Resources Board California Air Resources Board(916) 445-1104 (916) 322-8116