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Mercury from Electric Utilities: Monitoring and Emission Reductions. Greg DeAngelo & Tiffany Miesel Florida DEP, Division of Air Resource Management July 30, 2009. Outline and Introduction. Update since our March workshop Interaction with cement industry Federal regulatory updates
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Mercury from Electric Utilities: Monitoring and Emission Reductions Greg DeAngelo & Tiffany Miesel Florida DEP, Division of Air Resource Management July 30, 2009
Outline and Introduction • Update since our March workshop • Interaction with cement industry • Federal regulatory updates • Inventory • Testing and sampling • Monitoring (Mark Calloway, Tekran Instruments)
Update on Department's Activities • Feb 12—held informational workshop http://www.dep.state.fl.us/air/permitting/construction/mercury_wkp.htm • May 5 & 6—tested OUC Stanton, Units 1 & 2 • Stack testing; Method 30B, with speciated results • Concurrent material sampling; coal, combustion byproducts, scrubber sludge • Analyzed by Department's lab • June 22—met with FCG mercury task force • Status of the project, mercury (Hg) test data, Hg emission estimates, additional data needs
Other Department Activities • Added data from 2007 TRI, May FCG letter • Provided inventory to DEP staff working on TMDL standard for Hg • Current (2008) emissions • Emissions with controls to be installed in 2009 • Tracked federal rulemaking developments • MACT proposals and activity for utilities, cement • Examined non-utility coal use and utility non-coal generation • Followed Tampa Electric fly ash reinjection testing
Interaction with Cement Industry • March—DEP met with FDOT and cement experts at the FDOT research center in Gainesville. • Summarized emissions from cement kilns in the U.S. • Outlined likely range of future EPA limits, control options • Discussed concept of filter dust shuttling to ultimately encase some Hg in cement/concrete • Agreed to support demonstration efforts by testing cement for compliance with FDOT physical/chemical specifications • DEP's expert consultant has found that substitution of small amounts of filter dust for clinker: • Reduces air emissions, and • Will not disqualify the product as a Type I/II or masonry cement. • National associations are moving toward dust shuttling. • DEP is looking for participants interested in testing. • Contact at DEP is Al Linero.
Federal Rulemaking (Cement MACT) • May 6, 2009—EPA proposed revisions • Tighter Hg standard, on a 30-day rolling average basis • Compliance through continuous Hg measurement • CEMS (PS–12A) or sorbent trap monitors (PS–12B) • Performance specifications for ongoing quality assurance • "[Could] apply to sources from categories other than…cement" • No restriction on types of utility boiler fly ash that cement kilns can use • June 9, 2009—EPA extended the comment period • Three public hearings in June • Comments due Sept 4, 2009
Federal Rulemaking (Utility MACT) • In response to having CAMR vacated, EPA will propose a MACT rule for utilities. • Negotiations with litigants to settle the rulemaking schedule continue. • EPA believes they are very close to settling that schedule. • EPA plans to move "as quickly as [their] understanding of the issues allows." • EPA may have a final rule as early as Summer 2011. • EPA is not reconsidering their previously proposed MACT. • EPA will now (re-)evaluate all HAP (metals, acid gases, organics) • 114 information collection request (ICR) letters will be necessary and are under development. • Will EPA require stack tests to get the baseline data they will need? • EPA is soliciting comments on the proposed ICR. • Review of the ICR was noticed in Federal Register on July 2, 2009. • Comments are due August 31.
