So2 naaqs history book pdf

Includes limits for benzene, ozone, benzopyrene, arsenic, nickel and ammonia not covered in 1994. Epa replaced the 24hour and annual standards with a new shortterm onehour standard of 75 parts per billion ppb. In 2010, epa established new 1hour average national ambient air quality standards for no2 and so2 epa creates air quality trends using measurements from monitors located around the country. Here are answers to some questions about the recent announcement by the u. The epa is issuing this rule to identify areas that, based on recorded air quality monitoring data showing violations of. However, given epas recent shift in how they see, or dont see the 1hr so2 implementation process happening, we agreed that it was more important to focus on how the process has played out so far and what to expect next.

So 2 primary rea plans presentation for the casac bob hetes, stephen graham, nicole hagan march 21, 2017. It is released naturally by volcanic activity and is produced as a byproduct of copper extraction and the burning. Environmental protection agency regarding a proposed revision to the national ambient air quality standard naaqs for ozone from dr. No2 is the component of greatest concern and is used as the indicator for the larger group of nox. National ambient air quality standards naaqs brief robert w. Evaluating the nine factors in setting nonattainment area boundaries part 1 overview pdf 34 pp, 3. Federal register air quality designations for the 2010. The facts on naaqs national ambient air quality standards. On june 2, 2010, epa revised the so2 standard, establishing a 1hour primary standard of 75 ppb. Americas oil and natural gas industry the facts on naaqs.

These commonly found air pollutants also know n as criteria pollutants are particulate matter, groundlevel ozone, carbon monoxide co, sulfur dioxide so2, nitrogen dioxide no2, and. Recommended attainmentnonattainment designations in illinois for the 2010 revised primary 1hour so 2 national ambient air quality standard aqpstr 1102 june 2, 2011 illinois environmental protection agency division of air pollution control 1021 north grand avenue east p. The sum of nitric oxide no and no2 is commonly called. Understanding the naaqs and the designation process. Sulfur dioxide also sulphur dioxide in british english is the chemical compound with the formula s o 2. The green book so2 nonattainment areas 2010 standard. History of the 2010 so2 1hr naaqs june 2, 2010, epa issued the revised primary naaqs to improve public health protection first revision since the initial so2 naaqs was issued in 1971 the 2010 revision was compelled by a judicial consent decree and legal challenge to. Statement of basis for trenton psychiatric hospital. National ambient air quality standards ozone naaqs nonattainment consequences so 2 naaqs 2.

Environmental protection agency office of air quality planning and standards health and environmental impact division air benefitcost group research triangle park, north carolina. The table below shows that air quality based on concentrations of. Literature comparing national ambient air quality standards aaqss globally is scattered and sparse. The epa is completing area designations for this naaqs in four rounds. Epa promulgated the revised national ambient air quality standard naaqs for sulfur dioxide so 2 on june 2, 2010. Established by the united states environmental protection agency epa under authority of the clean air act 42 u. Epa publication of so2 naaqs designations starts lawsuit.

National ambient air quality standardssulfur dioxide. Sulfur dioxide so2 national ambient air quality standard. Table of historical so2 naaqs sulfur dioxide naaqs us epa. State of ohio 2010 revised sulfur dioxide national ambient. Epas naaqs for no2 is designed to protect against exposure to the entire group of nitrogen oxides nox. Primary national ambient air quality standard naaqs for. Federal register primary national ambient air quality. Title i air pollution control and prevention, part d. Table of historical sulfur dioxide national ambient air. Revised national ambient air quality standards 2009 released by the ministry of environment and forests.

The revision of the no 2 naaqs in 2010 did not affect the. Naaqs implementation coalition virtual facilities naaqs study. Christopher frey, distinguished university professor at north carolina state university and chair of the epas clean air scientific advisory committee. An analysis of the impacts and nonattainment risks of the. The federal clean air act caa sets national ambient air quality standards naaqs for six common air pollutants. Epas decision is based on its judgment that the current. It is a toxic gas responsible for the smell of burnt matches. Title i implementation documents april 16, 1992 57 fr 498 november 25, 1992 57 fr 55620 1997 ozone 8hour naaqs phase 1 and phase 2 see appendix c3 epa still dealing with vacated rules and remands 1997 pm 2. History of ozone naaqs same as previous 18 final rule date indicator averaging time level ppm. This rule establishes air quality designations for certain areas in the united states for the 2010 primary sulfur dioxide so2 national ambient air quality standard naaqs. Sulfur dioxide so2 primary air quality standards the clean air act requires epa to set national ambient air quality standards naaqs for sulfur dioxide and five other pollutants considered harmful to public health and the environment the other pollutants are ozone, particulate matter, nitrogen dioxide, carbon monoxide, and lead. Milestone date rounds 1 and 2 designations round 1 areas associated with 20092011 monitored violations epa signs notice promulgating final so 2 area designations for 29 nonattainment areas july 25, 20. Implementation guidance for the national ambient air. Overview and guidance pdf 16 pp, 910kb designations for the 2006 pm 2.

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