1. www.epa.gov/airscience AIR CLIMATE & ENERGY RESEARCH PROGRAM B U I L D I N G A S C I E N T I F I C F O U N D A T I O N F O R S O U N D E N V I R O N M E N T A L D E C I S I O N S U.S. Environmental Protection Agency Office of Research and Development South Philadelphia Passive Sampler and Sensor Study Annual Conference of the A&WMA - June 24, 2015, Raleigh, NC - Paper # 2015-A-34-AWMA E.D. Thoma, W. Jiao, H. Brantley, T. Wu, B. Squier, B. Mitchell, K. Oliver, D. Whitaker, S. Mukerjee, M. Colon, L. Alston, C. Gross-Davis, H. Schmidt, R. Landy, J. DeWees, R. Merrill, E. Escobar, M. Amin, M. Modrak, T. Cousett NRMRL Fugitive and Area Source Group Source and Fenceline Measurements Methods and Technology Development

2. 2 U.S. Environmental Protection Agency Office of Research and Development South Philly Passive Sampler and Sensor Study An applied research effort with multiple objectives Support development of: -Facility fenceline measurement methods -Advanced LDAR concepts -Near source tools for communities Improve understanding of: -Benzene (and BETX) spatial concentration profiles -Low cost passive sampler and sensor methods -Time-resolved fenceline monitoring (AMS) Collaboration: -EPA Region 3, ORD, OAR, and the City of Philadelphia AMS

3. 3 U.S. Environmental Protection Agency Office of Research and Development Better Air Quality Management Decisions Work with industry on best practices Reduce emissions Safer working environments Save money The South Philly project is part of EPA’s Next Generation Air Measurement (NGAM) program Enable Efficient Compliance Facilitate Smart Regulation Supplement Ambient Air Monitors Expand Conversation on Air Pollution Enhance Exposure Assessment Increase Community Information 3

4. 4 U.S. Environmental Protection Agency Office of Research and Development Carol Ann Gross-Davis and Howard Schmidt, Ron Landy - EPA Region 3 Don Whitaker, Karen Oliver, Shaibal Mukerjee - ORD/NERL- Passive samplers Bill Squier, and Bill Michell - ORD/NRMRL- design and sensors Halley Brantley, Wan Jiao, Sue Kimbrough - data analysis and support Adam Eisele, Mike Miller, Don Smith, Motria Caudill - EPA Region collaborators Jason Dewees, Ray Merrill, Brenda Shine, - EPA/OAR collaborators Dennis Sosna, Hallie Weiss - City of Philadelphia AMS Many Folks at Arcadis, Alion, Lockheed Martin, and ERG - ORD contractors Steen Outdoor Advertising - Subcontractor South Philly Passive Sampler and Sensor Study Folks Involved

5. 5 U.S. Environmental Protection Agency Office of Research and Development Discussed today 5

6. 6 U.S. Environmental Protection Agency Office of Research and Development Passive Samplers - potential regulatory application

7. 7 U.S. Environmental Protection Agency Office of Research and Development 7.2 km Deployment Area 7

8. 8 U.S. Environmental Protection Agency Office of Research and Development 8

9. 9 U.S. Environmental Protection Agency Office of Research and Development 550 m AMS-OP Zoomed-in View 9

10. 10 U.S. Environmental Protection Agency Office of Research and Development Solar-powered SPod Sentinel base station wireless cell uplink Philly Sensor Network Deployment 10

11. 11 U.S. Environmental Protection Agency Office of Research and Development Passive Sampler Duplicate Comparison Includes both Philly and Multiregional study

12. 12 U.S. Environmental Protection Agency Office of Research and Development PS Benzene Background Variation (7/2013 – 9/2014) Winter time spike Numbers are the location of period minimum

13. 13 U.S. Environmental Protection Agency Office of Research and Development Benzene by location (background subtracted) Fence line sites In community sites

14. 14 U.S. Environmental Protection Agency Office of Research and Development Investigating Benzene Concentration Gradients

15. 15 U.S. Environmental Protection Agency Office of Research and Development Moving forward Fence line sensors networks Wind and concentration measurements Used mostly now in VOC applications Open source design Drop-in-place SPod ($$) Fixed-placed SENTINEL ($$$) 15 See Wan Jiao et al. “Investigation of a Low Cost Sensor-Based Leak Detection System for Fence Line Applications”, Paper #26 for more info

16. 16 U.S. Environmental Protection Agency Office of Research and Development Moving forward - near source (lower cost monitoring ) Drop-in-place SPod ($$) EPA Sensor Board with PID VOC sensor Plug-in a other sensors (when ready) 16

17. 17 U.S. Environmental Protection Agency Office of Research and Development EPA fence line sensor version 2 (in development) $1500 to $3500 (several options) Commercial wind sensor 3D-printed housing (base) Arduino computer EPA rev 2 sensor board Solar powered All designs and code open source

18. 18 U.S. Environmental Protection Agency Office of Research and Development 18

19. 19 U.S. Environmental Protection Agency Office of Research and Development SPod Back Trajectory Example 19

20. 20 U.S. Environmental Protection Agency Office of Research and Development Digital Billboards possible deployment system Digital Billboards Provide: Security Power Communications Sentinel Pod 20

21. 21 U.S. Environmental Protection Agency Office of Research and Development Field sampling completed June 2013- March 2015 Passive sampler in-community deployments successful Data analysis underway (benzene and other compounds) Prototype sensor deployment successful (see paper #26) New field deployments in planning phases Publication development in process South Philly Passive Sampler and Sensor Study Status and Summary