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)