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ENV-15-51 2016: A Year of Intensive Activity for SO2 NAAQS Implementation

Robert Paine, AECOM

Format:
Electronic (digital download/no shipping)

Associate Member, International Member, Petrochemical Member, Refining Member - $0.00
Government, NonMember - $35.00

Description:

The implementation of the 1-hour SO2 National Ambient Air Quality Standard (NAAQS) is unique in that SO2 is assumed to have local hot spots. Large SO2 sources are assumed to be “guilty” of NAAQS violations unless they can show through modeling or monitoring that they are “innocent” - in compliance in all areas near their facility. EPA’s “Data Requirements Rule” and the EPA-Sierra Club Consent Decree requires states to plan either a dispersion modeling or monitoring program for hundreds of SO2 sources nationwide (include several large refineries), all during 2016. While the rule is directed at states, affected sources are being notified by overworked state agency staff that they will need to take an active part in implementing either a modeling or a monitoring approach. In the meantime, EPA has issued proposed updates to their guideline model, AERMOD, which will affect the modeling approach. This presentation will provide an overview of strategic planning for the modeling or monitoring options. For modeling, advanced techniques involve specific AERMOD options (e.g., the “low wind” options) and possible use of site-specific meteorological data. A successful modeling outcome can avoid a costly monitoring program. However, in some cases, monitoring may provide more realistic results. For monitoring, the key issues are “how many” and “where”. Since the operation of monitors is expensive, strategic planning in this regard is critical to success.

Product Details:

Product ID: ENV-15-51
Publication Year: 2015