MEMORANDUM

DATE:   August 6, 2010

FROM:  Keith Barnett, EPA/OAR/OAQPS/SPPD/MMG

TO: Docket EPA-HQ-OAR-2007-0877, Standards of Performance for Portland
Cement Plants  

SUBJECT:   Incorporation by reference of Docket EPA-HQ-OAR-2002-0051,
National Emissions Standards for Hazardous Air Pollutants for Portland
Cement Manufacturing.  

Docket EPA-HQ-OAR-2002-0051 contains information that is relevant to the
Standards of Performance for Portland Cement Plants rulemaking and
Docket EPA-HQ-OAR-2002-0051 is incorporated by reference into this
docket EPA-HQ-OAR-2007-0877.

