Slide 1

2013 Ozone Season Review / Ozone Monitoring Network Tom Downs, CCM Maine Department of Environmental Protection Chief Meteorologist, Bureau of Air Quality MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION Protecting Maines Air, Land and Water March 26, 2014 AQMC Meeting

Slide 2

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 2013 Ozone Season Summary Meteorological conditions (June August) Ozone Season time series 2011-13 Event back trajectories Maine and Eastern US 4 th high and Design Values Trends Potential Future Ozone NAAQS Ozone Monitoring Network 2

Slide 3

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 3 June - August 2013 Surface and 850 mb Temperature Anomolies

Slide 4

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 4 JULY 2013 Anomalous SE Flow Tropical Maritime AIr Bermuda High did not extend westward

Slide 5

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 5

Slide 6

Summit of Cadillac Mt. 2011-13 Exceedance Back Trajectories 6 Atlantic Ocean Maine

Slide 7

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep Mid and Downeast Coast 2011-13 Exceedance Back Trajectories 7 Atlantic Ocean Gulf of Maine

Slide 8

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep Southwest Coast 2011-13 Exceedance Back Trajectories 8 Atlantic Ocean Gulf of Maine

Slide 9

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 9

Slide 10

10

Slide 11

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 11

Slide 12

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 12

Slide 13

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 13

Slide 14

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 14

Slide 15

March 25-27 CASAC Meeting to review the following EPA documents: Health Risk and Exposure Assessment for Ozone Welfare Risk and Exposure Assessment for Ozone Policy Assessment for the Review of the Ozone NAAQS Potential for primary standard to be lowered EPA staff recommends 60-70 ppb (most likely 65 or 70 ppb?) Canadian standard currently 65 ppb, 63 ppb in 2015 and 62 ppb in 2020 Potential for Secondary W-126 NAAQS EPA staff recommends 7-15ppm-hrs (most likely 15ppm-hrs?) May 28 CASAC teleconference to finalize recommendation letter to EPA EPA proposal may occur ~Dec 1, 2014 Jan 15, 2015(?) with final ~Oct 1 Nov 15, 2015(?). [Next court date April 8] MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep Potential Future Ozone NAAQS 15

Slide 16

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 16

Slide 17

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 17

Slide 18

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 18

Slide 19

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 19

Slide 20

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep 20 Potential changes to the Ozone Network? 1)Replacement for North Lovell to monitor high spring ozone in the western mountains 2)Replacement for Bowdoinham to capture peak ozone along the coast downwind of Portland (Phippsburg or Georgetown (Reid State Park))

Slide 21

www.maine.gov/dep Maine Department of Environmental Protection Bureau of Air Quality 21