DRAFT AGENDA Mineral Wool and Wool Fiberglass RTR s Meeting between OMB and EPA October 5 , 2011 4 :00 to 5 :00 pm (Eastern Time) Call - in Number: 919 - 541 - 4376 Agenda Topics: 1 . Summary

of the Industry

and the C urrent MACT Standard 2 . Proposed Amendments**MINERAL WOOL INDUSTRY OVERVIEW**

• Mineral Wool is a building insulation serving primari ly the industrial, commercial and institutional markets - used for thermal or acoustical insulation, noise attenuation, and fire protection • Mineral wool is a fibrous, glass y substance made from natural rock, blast furnace slag, or other similar materials an d consists of silicate fibers typicall y 4 to 7 micrometers in diameter • 6 companies, 7 facilities . 5 of the 6 companies are Small Businesses • SBAR Panel convened June 1, 2011. • All facilities are major sources of HAP emissions **DRAFT 2011 RTR Amendments**  112 (d)(3) MACT • Proposing to c orrect deficiencies for pollutants that were not regulated in the 1999 MACT o HF o HCl o COS (Surrogacy

removed) o Phenol (Surrogacy

removed) o Methanol (Surrogacy

removed) o Formaldeh yd e • Proposing to correct deficiency for the collection p rocess that was not regulated in the 1999 MACT o Collection/curing are being ‘bundled’ together o Subcategorizing according to 3 types of collection/curing 112(f)(2) Risk Review • Risk is acceptable at current levels and within an ample margin of safety ; n o amendments are proposed based on 112(f)(2) 112(d)(6) Technology

Review • No changes proposed based on 112(d)(6) Other Changes • Startup and Shutdown - emission limits (in lb/hour units) equivalent to production - based emission limits for periods during which no p roduction exists • Malfunction - Affirmative defense language • Clarifying that ‘incinerator’ in rule means ‘thermal oxidizer’ to avoid confusion with 129 rules **Mineral Wool 1999 MACT**  Cupola Existing Sources 0.10 lb PM per ton of melt

New Sources 0.10 lb PM per ton of melt 0.10 lb CO per ton of melt, or Reduce uncontrolled CO emissions ≥ 99% Curing Oven Existing and New Sources 0.06 lb formaldehyde per ton of melt, or Reduce uncontrolled formaldehyde emissions ≥ 80%**WOOL FIBERGLASS INDUSTRY OVERVIEW**

• Wool fiberglass is a building insulation serving primarily the residential housing market - thermal and acoustical insulation for buildings, automobiles, aircraft, appliances, ductwork, and pipes; other uses include liquid and air filtration. • 30 facilities and 80 furnaces use a variety of processes and formulations depending on end use market • Most of industry

is phasing out the use of formaldehyde - based binders • Some facilities are using a new technology to extend furnace life that creates high hexavalent chromium emissions • 2010 voluntary

I CR, including some emissions testing, was conducted by industry . **DRAFT 2011 RTR Amendments**  112(d)(3) MACT • Proposing to c orrect deficiencies for pollutants that were not regulated in the 1999 MACT o HF o HCl o Phenol (Surrogacy

removed) o Methanol (Surrogacy

removed) o Formaldeh yd e 112(f)(2) Risk Review • Hexavalent chromium is the primary risk driver, follow ed by

formaldehyde. • We are propos ing chrome limits to the rule 112(d)(6) Technology

Review • Proposing revised limits based on i mproved PM control technologies • Proposing to add chrome limits based on n ew technology to extend furnace life Other Changes • Startup and Shutdown - emission limits (in lb/hour units) equivalent to production - based emission limits for periods during which no production exists • Malfunction - Affirmative defense language • Clarifying that ‘incinerator’ in rule means ‘thermal oxidizer’ to avoid confusion with 129 rules **Wool Fiberglass 1999**  **MACT** Glass - Melting Furnaces Existing and New Sources 0.50 lb PM per ton of glass pulled Rotary Spin (RS) Lines Existing Sources 1.2 lb formaldehyde per ton of glass pulled New Sources 0.8 lb formaldehyde per ton of glass pulled Flame Attenuation (FA) Lines New Sources Heavy - Density 7.8 lb formaldehyde per ton of glas s pulled Existing & New Sources Pipe Product 6.8 lb formaldehyde per ton of glass pulled