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Control Strategies Evaluation & Costing

Control Strategies Evaluation & Costing

Control Strategies Evaluation & Costing

SC&A provides technical and policy analysis support to the U.S. Environmental Protection Agency (EPA) and state and local regulatory agencies in selecting cost-effective emission control strategies for implementation. Our experience ranges from assisting EPA with its control measure database and menu of control measures to working with state and local agencies to perform reasonable available control technology (RACT)/reasonably available control measure (RACM) analyses. We help agencies identify appropriate and effective control measures for inclusion in state implementation plans (SIPs) and assess voluntary local measures that are likely to keep existing areas in attainment of National Ambient Air Quality Standards (NAAQS).

Sample Projects

  • SC&A provides technical support to the Allegheny County Health Department in developing its SIP for the 24-hour PM2.5 NAAQS for the Liberty-Clairton nonattainment area. This SIP submittal identifies and evaluates sources of direct PM2.5 emissions and precursors, including SO2, NOx, VOCs, and ammonia. Key project tasks included evaluating and modifying the 2007 SIP emission inventories and performing a RACM analysis for all area and mobile sources in the revised 2007 SIP emission inventories. The emission inventories developed by SC&A for this contract were used in the regional transport modeling performed for the PM2.5 attainment analysis. RACT/RACM analysis was performed in order to identify whether there are control measures that could be implemented in the area to advance the attainment date by one year or more. Control measure costs and cost effectiveness were estimated in this RACT/RAM analysis.
  • SC&A performed technical analysis and process planning tasks to assist the Mid-America Regional Council (MARC) in updating its regional clean air action plan. This plan focuses on voluntary measures that the Kansas City Metro area can pursue to reduce ozone precursor emissions as part of the area's attainment plan for expected EPA ozone NAAQS revisions. A technical report analyzing all of the emission reduction strategies identified by the working group and community engagement process was developed and submitted to the working group. The analysis of voluntary controls uses many criteria, including cost effectiveness, ease of implementation, and technical feasibility. The report also identifies both short- and long-term voluntary control strategies and emission reduction measures that could be used to improve air quality in the Kansas City region. SC&A's role included: reviewing emission-reduction strategies identified by the community working group and identifying any additional strategies used elsewhere; determining any legal or regulatory actions at the state or local level required to implement identified strategies; preparing cost estimates for implementing strategies; developing a technical report listing all of the emission-reduction strategies and the level of reductions that would be realized if implemented; developing scoring criteria for emission-reduction strategies; scoring proposed emission-reduction strategies and recommending the most effective strategies; and performing a cost-benefit analysis. SC&A also assisted in facilitation of work groups to gain consensus on priority voluntary measures to be included in the action plan.
  • SC&A helped Montana DOT refine its methods for determining projects for participation in its Montana Air Quality and Congestion Initiative (MACI), developed recommendations to improve and implement the MACI program, and helped orient the program toward high-value investments for Montana communities. A risk assessment was performed to identify which Montana communities have the greatest risk of health effects associated with current criteria pollutant exposure, and to identify Montana areas prone to future transportation-related issues. This analysis focused on the communities at risk from transportation-related pollutants. In addition, this project identified Congestion Mitigation and Air Quality (CMAQ) projects and measures that provide the greatest emission reduction/air quality improvement potential in Montana communities. A set of emission quantification tools were developed to estimate the emission reductions associated with CMAQ project types — incorporating MOVES emission rates.

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