Pod Technologies - SCAQMD Rules 1146 & 1146.1

Overview

On September 05, 2008, South Coast Air Quality Management District (SCAQMD) ammended rules for emissions of oxides of nitrogen (NOx) from industrial, institutional, and commercial boilers, steam generators, and process heaters.

Large and small natural gas-fired boilers, steam generators, and heaters currently are required to meet a NOx emission limit of 30 parts per million (ppm). Beginning in January 2012, large and small natural gas-fired units will be required to meet new, more stringent NOx emission limits ranging from 12 ppm to 5 ppm, depending on size and type of unit. New emission limits will be phased in over three to four years depending on the size of the unit. Large and small landfill gas-fired and digester gas-fired units must meet new NOx emission limits of 25 ppm and 15 ppm, respectively.

The amendments also call for compliance testing with portable analyzers and recognition of energy-efficient units.

Links to information and resources on regulations, test methods, monitoring, and reporting are listed below.

Regulations

• Rule 1146—Emissions of Oxides of Nitrogen from Industrial, Institutional, and Commercial Boilers, Steam Generators, and Process Heaters. Amended September 05, 2008
  • Clean Version (pdf, 19pp., 257KB)
  • Underline/Strikeout Version (pdf, 22pp., 290KB)
• Rule 1146.1—Emissions of Oxides of Nitrogen from Small Industrial, Institutional, and Commercial Boilers, Steam Generators, and Process Heaters. Amended September 05, 2008
  • Clean Version (pdf, 16pp., 246KB)
  • Underline/Strikeout Version (pdf, 18pp., 264KB)

Test Methods & Forms

• Compliance Protocol for the Measurement of Nitrogen Oxides, Volatile Organic Compounds, Carbon Monoxide, and Oxygen from Sources Subject to South Coast Air Quality Management District Rule 1146 and 1146.1. March 10, 2009 (pdf, 38pp., 102KB)
• Combustion Gas Periodic Monitoring Protocol for the Periodic Monitoring of Nitrogen Oxides, Carbon Monoxide, and Oxygen from Combustion Sources Subject to Rules 1110.2, 1146, and 1146.1. Version 0.0, May 01, 2009 (pdf, 24pp., 434KB)
  • Form 1: Linearity and Interference Tests Recordkeeping. (pdf, 1p., 9.8KB)
  • Form 2: Calibration Recordkeeping. (pdf, 1p., 15.5KB)
  • Form 3B: Periodic Monitoring Recordkeeping. SCAQMD RULES 1146 & 1146.1 Emissions of Oxides of Nitrogen from Industrial, Institutional and Commercial Boilers, Steam Generators, and Process Heaters (pdf, 1p., 15.8KB)
  • Form 4: Stability Check Recordkeeping. (pdf, 1p., 9.8KB)
  • CTM-030 Determination of Nitrogen Oxides, Carbon Monoxide, and Oxygen Emissions from Natural Gas-Fired Engines, Boilers and Process Heaters Using Portable Analyzers. (pdf, 19pp., 74KB)

Other

• SCAQMD has information at Rules and Regulations Support Documents.
• Portable Analyzer Training is required for the use of portable analyzers for periodic monitoring. For the latest information and schedule, check Combustion Gas Portable Analyzer Training & Certification.
• Final Environmental Assessment for Proposed Amended Rule 1146—Emissions of Oxides of Nitrogen from Industrial, Institutional, and Commercial Boilers, Steam Generators, and Process Heaters. August 2008 (pdf, 252pp., 1.6MB)
• Final Environmental Assessment (EA) for Proposed Amended Rule (PAR) 1146.1—Emissions of Oxides of Nitrogen from Small Industrial, Institutional, and Commercial Boilers, Steam Generators and Process Heaters. August 2008 (pdf, 71pp., 450KB)
• Information on Portable Emissions Analyzers 
• SCAQMD Rule 1146 & 1146.1 Excel Workbooks by Pod Technologies (Forms 1, 2, 3B & 4) 

If you have any additional or updated information to add to this web page, or if a link is not working, please contact Pod Technologies