AQMD Furniture Stripping Working Group Meeting

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(No Transcript)
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SCAQMD Boiler RulesRule 1146.2 Emissions of
Oxides of Nitrogen from Large Water Heaters and
Small Boilers

• March 22, 2006

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AQMD Boiler NOx Limits

• Rule 1146 30 ppm NOx (25 ppm for larger units)
• Rule 1146.1 30 ppm NOx
• Rule 1146.2 30 ppm NOx for units gt 0.4 MM
  Btu/hr and 55 ppm for smaller units
• Rule 1121 15 ppm NOx

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Background

• Rule 1146.2 Adopted in 1998
• Established NOx and CO emission limits for new
  equipment (2000 2001)
• 55 ppm for Type 1 (75,000 to 0.4 MM Btu/hr)
• 30 ppm for Type 2 ( gt0.4 to 2 MM Btu/hr)
• Established compliance dates for in-use Type 2
  units
• gt 1 MM Btu/hr (7/1/02 and 1/1/05)
• gt 0.4 to lt 1 MM Btu/hr (1/1/06)

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Implementation Studies

• Three Implementation Studies conducted since 1999
• Phase III Implementation Study for unitsgt 0.4 MM
  to 1 MM Btu/hr (July 2004)
• Pre-Certified retrofit kits not widely developed
• Retrofit burners not available for many units
• Recommendation to modify retrofit requirements
  and lower emission limits for new units
• Similar Implementation Issues for units gt 1 MM
  Btu/hr

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January 2005 Rule Amendment

• Extended compliance dates to retrofit or replace
  in-use units
• Compliance based on 15 year life
• Effective date for retrofit started January 1,
  2006

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Proposed 1146.2 Amendment May 2006

• Proposed amendments would
• Lower NOx emission limits for new units
• Require owners keep records of maintenance and
  equipment modifications
• Clarify applicability of rule
• Rule amendment will reduce NOx emissions in order
  to meet PM2.5 ambient air quality standard

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Rule Amendment Schedule

• Set Hearing in March 2006
• Public Hearing April 2006

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AQMD Contact

• Wayne Barcikowski
• 909-396-3077
• wbarcikowski_at_aqmd.gov

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15 Year Life Assumption

• Average life of equipment
• Date of manufacture used because
• Businesses could install used equipment if based
  on installation date
• Manufacture date/year is on nameplate
• Is consistent for all situations

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1146.2 Exemption Level

• Compliance with exemption level (9,000 therms)
  can be shown using
• Gas meter
• Hourly meter
• Calculations (gas meter and equipment ratings)
• Boilers used only for building heat are often
  exempt (schools, office buildings, hospitals)
• 1.5 MM Btu/hr unit operating 4 months - likely
  exempt
• Units providing hot water may not be exempt
• Larger buildings often have Rule 1146.1 units