Update

US EPA is proposing mercury emission regulations for portland cement manufacturers. In addition to mercury, the changes would add or revise emission limits for hydrochloric acid (HCl), total hydrocarbons (THC), and particulate matter (PM).

Also inculded in the proposed amendments are performance specifications for mercury continuous emission monitors (CEMS), as well as updated recordkeeping and testing requirements:

• Performance Specification 12A—Specifications and Test Procedures
  For Total Vapor Phase Mercury Continuous Emission Monitoring
  Systems in Stationary Sources.
• Performance Specification 12B – Specifications and Test
  Procedures For Monitoring Total Vapor Phase Mercury Emissions
  from Stationary Sources Using a Sorbent Trap Monitoring System
• Procedure 5. Quality Assurance Requirements for Vapor Phase
  Mercury Continuous Emission Monitoring Systems Used for
  Compliance Determination at Stationary Sources

Portland Cement Manufacturing: Proposed Amendments to National Air Toxics Emission Standards: Proposed Rule. April 21 May 6, 2009 (pdf, 58pp., 1MB)

South Coast Air Quality Management District (SCAQMD) has posted a draft final source test protocol for Rules 1110.2, 1146, and 1146.1. The protocol is for the periodic monitoring of nitrogen oxides (NOx), carbon monoxide (CO), and oxygen (O2) from combustion sources. The protocol has been developed to ensure standardization of test procedures, and includes specifications for test conditions, test methods, test equipment, data collection/reporting, and quality assurance procedures.

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.. Draft Version 0.0, April 9 May 1, 2009 (pdf, 24pp., 434kB)

Previously, SCAQMD posted a protocol for compliance testing:

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)

For more information on Rules 1110.2, 1146, and 1146.1, see:

• SCAQMD Rule 1110.2 Support
• SCAQMD Rule 1146 & 1146.1 Support