New Source Review NSR Prevention of Significant Deterioration PSD: Refinement of Increment Modeling Procedures Proposal.

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Motivation. What is New Source Review?What are the Requirements of the PSD Program?PSD IncrementsPurpose of this ProposalRefinements of Increment Modeling Procedures ProposalTopics Addressed in this Proposal. 2. What is New Source Review?. Limits used to distinguish whether a source is significant or minor. Significant sources for:PSD are those with potential to discharge (i.e. ability at most extreme outline limit
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Jessica Montañez Office of Air Quality Planning and Standards New Source Review Group New Source Review (NSR) Prevention of Significant Deterioration (PSD): Refinement of Increment Modeling Procedures Proposal 1

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Agenda What is New Source Review? What are the Requirements of the PSD Program? PSD Increments Purpose of this Proposal Refinements of Increment Modeling Procedures Proposal Topics Addressed in this Proposal 2

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New Source Review pre-development allowing program for new or changed stationary sources What is New Source Review? Limits used to recognize whether a source is major or minor. Significant hotspots for: PSD are those with potential to radiate (i.e. ability at most extreme outline ability to radiate a toxin) 100 or 250 tons/year or all the more relying upon the source classification NA NSR are those with potential to emanate 100 tons/year or more. Sources may be liable to NA NSR on the grounds that lower edges apply contingent upon the nonattainment seriousness. Controlled NSR toxins. For: PSD incorporate National Ambient Air Quality Standards (NAAQS) and different poisons, for example, sulfuric corrosive fog and hydrogen sulfide NA NSR incorporate just the NAAQS NSR is partitioned into three sections: Major NSR in fulfillment zones (PSD) Major NSR in nonattainment regions (NA NSR) Minor NSR in both achievement and nonattainment territories 3

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What Are the Requirements of the PSD Program? When it is resolved that a source is liable to the PSD program, the program requires: Installation of Best Available Control Technology (BACT) Performing Air Quality Analysis to save existing clean air (counting National Parks and Wilderness Areas where appropriate) NAAQS Analysis (observing and displaying) Increment Analysis (demonstrating) Performing an Additional Impacts Analysis Public Involvement 4

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PSD Increments One of the huge segments of the PSD program is the prerequisite to assess increase utilization Baseline Concentration - the surrounding focus that existed in the range before a PSD source presents the principal PSD application in the zone Increment - greatest permitted increment in convergence of a poison over the pattern fixation in a territory Increment gauges exist for 3 contaminations for an assortment of averaging periods and zone arrangements Particulate Matter (PM 10 ) Sulfur Dioxide (SO 2 ) Nitrogen Dioxide (NO 2 ) Increment models for Class I zones are the littlest ones taken after by Class II and Class III Class I - national parks and other common zones of concern Class II - about every other zone in the United States Class III – territories focused for mechanical improvement 5

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Purpose of this Proposal Purpose: Refine the strategy for dissecting augmentation utilization through rulemaking Why? After some time, EPA has created suggested approaches for addition investigations through rules and direction archives in light of the fact that PSD controls contained just a couple of fundamental necessities Guidance on Air Quality Models, 40CFR Part 51 Appendix W Draft NSR Workshop Manual However, extraordinary translations and methodologies have come about over how restricting the rules and direction reports are and who has a definitive prudence to figure out which methodologies are sensible for a particular augmentation examination "EPA and states have by and large utilized a discharges stock and demonstrating way to deal with compute increase utilization." 6

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Refinements of Increment Modeling Procedures Proposal Proposed lead: Clarifies how PSD emanations increments are ascertained to decide consistence with the PSD increase Incorporates some of Western States Air Resources Council (WESTAR) suggestions Addresses issues identified with the 2004 State of North Dakota and the U.S. EPA Memorandum of Understanding (MOU) Proposal: Published in Federal Register on June 6, 2007 Comment period shut on August 6, 2007 Comment period revived on August 29, 2007 New remark period closes on September 28, 2007 7

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Refinements of Increment Modeling Procedures Proposal (Continued) Topics tended to in the proposition: What is the impact of the 1990 Draft NSR Workshop Manual? In what manner ought to real emanations from pertinent sources that expend the PSD addition be evaluated? How is a source with a Class I Area Federal Land Manager (FLM) difference treated in ensuing augmentation utilization displaying? What elective eras can be utilized to model poison focuses? In what manner ought to real discharges be figured for demonstrating here and now augments? What are fitting sorts of meteorological information and handling that ought to be utilized for certain scattering model applications? How long of meteorological information are suitable for displaying addition utilization? What are the prerequisites for displaying documentation, information and programming accessibility? 8

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What is the Effect of the 1990 Draft NSR Workshop Manual? We are just proposing to clear up that the 1990 Draft NSR Workshop Manual does not without anyone else\'s input build up conclusive approaches or translations Policies or understandings from the NSR Workshop Manual that where issued in definite shape, (for example, rulemakings, direction notice, or arbitrations by the Administrator or the Environmental Appeals Board) are the ones that will be trailed by EPA 9

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How Should Actual Emissions from Applicable Sources that Consume the PSD Increment be Estimated? Increase utilization examination include: Actual discharges: From any major stationary source on which development initiated after the real source gauge date Increases and reductions at any stationary source happening after the minor source pattern date Secondary emanations Mobile sources outflows: States that have fail to represent these discharges in earlier augmentation investigation ought to just incorporate them in their next allow survey or intermittent audit of addition utilization We are proposing to change the reference to "any stationary source" in 40 CFR 51.166(b)(13)(ii)(b) and 52.21 (b)(13)(ii)(b) of our directions to clarify that genuine addition expending discharges are not restricted exclusively to stationary source emanations Increment utilization examination bar: Categories specified in Clean Air Act Section 163(c) Concentrations inferable from transitory increments in emanations from sources influenced by SIP corrections endorsed by EPA, 40 CFR 51.166(f)(1)(v) Secondary outflows: outflows which happen accordingly of the development or operation of a noteworthy source or adjustment, yet don\'t originate from the significant source itself. They incorporate discharges from any offsite bolster office. Must be particular, all around characterized, quantifiable, and affect an indistinguishable general range from the significant source or change under survey. 10

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How Should Actual Emissions from Applicable Sources that Consume the PSD Increment be Estimated? (Kept) Proposing to: Give each auditing expert the tact to utilize its best proficient judgment when deciding sources\' real outflows Adopt an updated meaning of "real discharges" for augmentation figuring purposes in 40CFR51.166(f) and 52.21(f) as opposed to modifying 40CFR 51.166(b)(21) and 40CFR 52.21(b)(21) Requesting remark on WESTAR\'s prescribed two-stage approach: EPA ought to build up a menu of adequate emanations count approaches for both here and now and yearly PSD investigations Allow the evaluating specialist to choose what they accept to be the most suitable choice from the menu in light of an arrangement of managing standards 11

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How Should Actual Emissions from Applicable Sources that Consume the PSD Increment be Estimated? (Proceeded with) WESTAR\'s recommended controlling standards: Maximize the exactness of the method(s) utilized as a part of mirroring the genuine status of air quality amid every day and age related with relevant norms Conform to the Act, Federal PSD rules, and other material laws and tenets Ensure consistency between emanations computation strategies utilized for sources in the pattern outflows stock and the present discharges stock Ensure that chose techniques are commonsense given the accessibility of surveying specialist access to the emanations information Support decency and consistency on how outflows are figured for different source sorts crosswise over and inside States Support key air quality administration goals that States and EPA are looking to accomplish, for example, empowering sources\' utilization of consistent outflows observing frameworks (CEMS) and debilitating sources from looking for more allowed air quality than they require 12

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How is a Source with a Class I Area Federal Land Manager (FLM) Variance Treated in Subsequent Increment Consumption Modeling? At the point when a proposed source subject to allowing can possibly antagonistically affect a Class I range, an extra survey is required to evaluate whether the source can possibly unfavorably affect the region\'s AQRVs – asset that may be influenced by an adjustment in air quality as characterized by the FLM, State or Indian Governing Body Sections 165(d)(2)(C)(ii) and 165(d)(2)(C)(iii) of the CAA express that AQRVs control whether an allow is issued or not The FLM, State or Indian Governing Body has the weight of exhibiting an unfriendly effect on AQRVs, assuming any, when the Class I addition is not surpassed. The allow candidate has the weight of persuading the FLM, State or Indian Governing Body that the proposed source won\'t adversy affect AQRVs when the source causes or adds to an infringement of the Class I augment This confirmation is known as a "difference" 13

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How is a Source with a Class I Area Federal Land Manager (FLM) Variance Treated in Subsequent Increment Consumption Modeling? (Proceeded with) Section 165(d)(C) of the Act is vague in the matter of whether the Class I augmentation ought to keep on applying in the Class I territory for which a change has been issued For that reason, we are proposing to: Retain the Class I augment for the p

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