Document ID: EPA-HQ-OAR-2002-0051-3463
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2010-09-09T04:00Z

Subject:	Meeting with Holcim Cement to Discuss Statistical Methods

Location:	U.S. Environmental Protection Agency, Research Triangle Park,
NC

Date: 		June 9, 2010

Participants:	

Holcim

Hector Ybanez, Holcim

Dr. William Mills, Mills Consulting

U.S. Environmental Protection Agency (EPA)

Keith Barnett, SPPD, OAQPS

Steve Silverman, OGC (by phone)

RTI International

Mike Laney

Roy Neulicht

Breda Munoz	

Representatives of Holcim Cement met with EPA to discuss the use of the
upper predictive limit (UPL) and the variability associated with mercury
in coals as well as intra-quarry variability of mercury concentrations.
Other topics included autocorrelation of  consecutive mercury emissions
data,  appropriate methods for the analysis of both long-term and
short-term THC CEMS data, accounting for THC emissions from coal mills,
clinker production monitoring issues, and issues associated with kiln
startup and shutdown.