Hot Topics in Air Quality

NAAQS, Regulations, and Other Developments

Jeff SlaybackA&WMA Southwest Ohio ChapterAugust 19, 2010

SO2 and NO2 NAAQS

Revised primary standard for NO2

New 1-hour standard promulgated 2-9-10 and effective 4-12-10 – 100 ppb (187 µg/m3)

Annual standard maintained at 53 ppb

Revised primary standard for SO2

New 1-hour standard promulgated 6-22-10 and effective 8-23-10 – 75 ppb (196 µg/m3)

Revoked existing 24-hr and annual stds

Secondary standards under review

Ozone NAAQS 1997 standard - 0.08 ppm, 8-hr avg

Revised primary and secondary standards announced on 3-12-08 0.075 ppm, 8-hr avg, effective 5-27-08 EPA area designation process stayed 9-16-08

pending further review of the standard

1997 8-hr standard (0.08 ppm) in effect Area designations Associated regulatory requirements

Ozone NAAQS Revised primary and secondary standards

proposed on 1-6-10 Primary 8-hr standard set at a level in the range

of 0.060-0.070 ppm, 0.065 ppm seems likely Seasonal secondary standard set at a level in the

range of 7-15 ppm-hrs

Final standards to be issued by August 31, 2010 Final designations by 8-31-11

PM2.5 NAAQS

1971 – TSP, 1987 – PM10 (inhalable, coarse)

Fine particle (PM2.5) primary and secondary standards promulgated on 7-18-97 15 μg/m3, annual average 65 μg/m3, 24-hr average

Revised 24-hr standards promulgated 10-17-06 and effective 12-18-06 35 μg/m3, 24-hr average Annual std (15 μg/m3) – remanded in 2009

Regulations Proposed federal GHG permitting 8-12-10 Portland Cement NSPS/NESHAP

Final amendments announced 8-9-10

FIP for Interstate Transport of Fine Particulate and Ozone FR proposal on 8-2-10

Industrial-Commercial-Industrial Boiler and Process Heater NESHAP Proposed MACT/GACT for major and area sources

published 6-4-10.

Regulations Commercial and Industrial Solid Waste

Incineration Units NSPS/EG Amendments proposed 6-4-10

Solid Waste Definition rule Proposed 6-4-10

Amendments to NESHAP for Stationary RICE Promulgated 3-3-10, effective 5-3-10

Amendments to NSPS for CI and SI ICE Proposed 6-8-10

NESHAP forStationary RICE

40 CFR Part 63, Subpart ZZZZ Originally promulgated 6-15-04 Affected RICE > 500 bhp located at major HAP

sources

Amendments promulgated 1-18-08 Affected new and reconstructed RICE ≤ 500 bhp

located at major HAP sources and new and reconstructed RICE at area sources

New RICE at major and area sources – NSPS IIII/JJJJ

NESHAP forStationary RICE Recent amendments to Subpart ZZZZ

Promulgated on 3-3-10 and effective 5-3-10

Affected RICE Existing CI ICE at area sources Existing CI ICE ≤ 500 bhp at major HAP sources Existing non-emergency CI ICE > 500 bhp at

major HAP sources

Rule applicability flow chart and summary of requirements found at http://www.epa.gov/ttn/atw/rice/ricepg.html

NESHAP forStationary RICE – CI ICE

Initial Notification requirements Due by 8-31-10

Not required for: Existing Emergency CI & Non-Emergency CI ≤

300 bhp at area sources Existing Emergency CI & Non-Emergency CI <

100 bhp and Limited Use CI > 500 bhp at major sources

Required for all other existing CI ICE All New CI ICE are affected by NSPS IIII