New Source Review in the SCAQMD November 2, 2005 Judy B. Yorke Yorke Engineering, LLC x25

New Source Review (NSR) In the SCAQMD, Regulation XIII specifies the NSR requirements. Rule 1301 states: “The specific air quality goal of this regulation is to achieve no net increases from new or modified permitted sources of nonattainment air contaminants or their precursors.”

Applicability of Reg. XIII NSR generally applies to New, Modified, or Relocated Sources “Modification means any physical change in equipment, change in method of operation, or an addition to an existing facility, which may cause the issuance of air contaminants.” “Routine maintenance and/or repair shall not be considered a physical change.”

Which Pollutants? All Nonattainment air contaminants and their precursors, plus ammonia and Ozone Depleting Compounds (ODCs) Typically, the key pollutants include: NOx VOCs PM CO SOx

When is BACT Applied? Best Available Control Technology is required for any relocation, new, or modified source which results in an emission increase [Rule 1303(a)(1)] Except for a qualifying Relocated Minor Facility, where there is no net increase in emissions within two years [Rule 1306(d)(3)]

What Defines an Increase? … Or Decrease? Rule 1306 specifies Increases and Decreases under NSR: Increase = Potential to Emit Decrease = Actual Emissions (last 2 years) at current BACT (& discounted if <180 days of use)

When and How is BACT Decided? BACT is determined at the time of permit issuance BACT is determined on a case-by-case basis

BACT for Major/Minor Sources BACT determination based on whether the source is classified as “major” or “minor” Major Sources - Must meet Federal LAER Minor Sources – Use Minor Source BACT Guidelines

Major Source Definition In the South Coast AQMD, a major source has the Potential to Emit (PTE) greater than these thresholds: VOC10 Tons/Year NOx10 Tons/Year SOx100 Tons/Year CO50 Tons/Year PM1070 Tons/Year

Major Source BACT Major Source BACT is determined case- by-case BACT analysis looks at the “best” emission limits for similar equipment anywhere in the U.S. BACT definitions can be constantly changing and tend to become more restrictive over time

Major Source BACT Guidelines The complete BACT Guidelines can be downloaded from:

What is BACT? BACT means the most stringent … limit or control technique which: (1)has been achieved in practice for such category or class of source; or (2)is contained in any state implementation plan (SIP) … ; or (3)is any other emission limitation or control technique, found … to be technologically feasible for such class or category of sources or for a specific source, and cost-effective …” Federal LAER State BACT

Achieved in Practice, Reg. Documents An emission limit or control technology may be considered AIP if it exists in any of the following regulatory documents or programs: AQMD BACT Guidelines CAPCOA BACT Clearinghouse USEPA RACT/BACT/LAER Clearinghouse Other districts’ and states’ BACT Guidelines BACT/LAER requirements in New Source Review permits issued by AQMD or other agencies

Achieved In Practice, New Technologies A control technology may be considered Achieved in Practice if it meets the following: Commercial Availability: At least one vendor must offer this equipment for regular or full-scale operation in the United States with a performance warranty; Reliability: All control technologies must have been installed and operated reliably for at least six months … at a minimum of 50% design capacity … ; Effectiveness: The control technology must be verified to perform effectively over the range of operation expected for that type of equipment …”

Achieved in Practice, Tech. Transfer Technology that is determined to be AIP for one category of source be considered for transfer to other source categories. There are two types of potentially transferable control technologies: 1) exhaust stream controls for similar exhaust streams, and 2) process controls and modifications for similar processes.

Examples of Major Sources BACT SCAQMD Determinations for Boilers:

Minor Source BACT For minor sources, the SCAQMD has published Minor Source BACT Guidelines [Part D - Minor Source BACT may be less stringent than for major sources However, not all source types are listed… Be very careful of using the appropriate category!

Examples of Minor Source BACT *Natural gas fired SCAQMD Determinations for Boilers*:

Examples of Minor Source BACT SubcategoryNOxSOxPM10 Carpet Oven80 O 2 Natural Gas Rotary, Spray and Flash Dryers 1) Natural Gas with Low NOx Burner Natural Gas Natural Gas w/ Baghouse Tray, Agitated Pan, and Rotary Vacuum Dryers Natural Gas with Low NOx Burner Natural Gas Natural Gas Tenter Frame Fabric Dryer60 3% 02 Natural Gas Other Dryers and Ovens – Direct and Indirect Fired 30 3% 02 Natural Gas Natural Gas 1. Dryers for foodstuff, pharmaceuticals, aggregate & chemicals. SCAQMD Determinations for Dryers and Ovens

Typical Permit Conditions Emission limits for pollutants released Monitoring requirements Maintenance requirements Source testing requirements Recordkeeping requirements

BACT Implications Remember, once BACT is set for your source, you must always comply with that limit… as will all of the sources after you…