# Part 70 Operating Permit

Permit Number: 

### 3296-121-0021-V-02-0 Effective Date: February 26, 2009

Facility Name: 

### Owens Corning Insulating Systems, LLC.

Facility Address: 7000 McLarin Road Fairburn, Georgia 30213, Fulton County

Mailing Address: 7000 McLarin Road Fairburn, Georgia 30213

Parent/Holding Company: Owens Corning

Facility AIRS Number: 04-13-121-00021

In accordance with the provisions of the Georgia Ai r Quality Act, O.C.G.A. Section 12-9-1, et seq and the Georgia Rules for Air Quality Control, Chapter 391- 3-1, adopted pursuant to and in effect under the Ac t, the Permittee described above is issued a Part 70 P ermit for:

The operation of a wool fiberglass insulation manu facturing facility

This Permit is conditioned upon compliance with all provisions of The Georgia Air Quality Act, O.C.G.A

. Section 12-9-1, et seq, the Rules, Chapter 391-3-1, adopted and in effect under that Act, or any other
condition of this Permit. Unless modified or revok ed, this Permit expires five years after the effect ive date indicated above.

This Permit may be subject to revocation, suspensio n, modification or amendment by the Director for cause including evidence of noncompliance with any of the above, for any misrepresentation made in Title V Application No. TV-17969 signed on January 31, 2008, any other applications upon which this Permit is based, supporting data entered therein or attached thereto, or any subsequent submittal of supporting data, or for any alterations affecting t he emissions from this source.

This Permit is further subject to and conditioned u pon the terms, conditions, limitations, standards, or schedules contained in or specified on the attached 59 pages.

[Signed]

Director Environmental Protection DivisionTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

i 

### Table of Contents

PART 1.0 FACILITY DESCRIPTION ...............................

................................................... ...........................1
1.1 Site Determination .............................

................................................... ...............................................1
1.2 Previous and/or Other Names ....................

................................................... .......................................1 1.3 Overall Facility Process Description...........

................................................... ......................................1
PART 2.0 REQUIREMENTS PERTAINING TO THE ENTIRE FACILITY ..... ........................................4 2.1 Facility Wide Emission Caps and Operating Limit s.................................................. ..........................4 2.2 Facility Wide Federal Rule Standards ...........

................................................... ...................................4 2.3 Facility Wide SIP Rule Standards...............

................................................... ......................................4 2.4 Facility Wide Standards Not Covered by a Federa l or SIP Rule and Not Instituted as an Emission Cap or Operating Limit .............................

................................................... ........................................4
PART 3.0 REQUIREMENTS FOR EMISSION UNITS ....................

................................................... ..........5
3.1 Emission Units .................................

................................................... .................................................5 3.2 Equipment Emission Caps and Operating Limits ...

................................................... ..........................8 3.3 Equipment Federal Rule Standards...............

................................................... ..................................10 3.4 Equipment SIP Rule Standards ...................

................................................... ....................................12 3.5 Equipment Standards Not Covered by a Federal or SIP Rule and Not Instituted as an Emission Cap or Operating Limit .................................

................................................... .........................................15
PART 4.0 REQUIREMENTS FOR TESTING...........................

................................................... .................16 4.1 General Testing Requirements...................

................................................... .....................................16 4.2 Specific Testing Requirements ..................

................................................... .....................................17
PART 5.0 REQUIREMENTS FOR MONITORING (Related to Data Collec tion) ....................................21 5.1 General Monitoring Requirements................

................................................... ..................................21 5.2 Specific Monitoring Requirements ...............

................................................... ..................................21
PART 6.0 RECORD KEEPING AND REPORTING REQUIREMENTS .......... ........................................32 6.1 General Record Keeping and Reporting Requiremen ts................................................. ....................32 6.2 Specific Record Keeping and Reporting Requireme nts ................................................ ....................36
PART 7.0 OTHER SPECIFIC REQUIREMENTS........................

................................................... .............41 7.1 Operational Flexibility ........................

................................................... ............................................41 7.2 Off-Permit Changes .............................

................................................... ...........................................41 7.3 Alternative Requirements .......................

................................................... ........................................42 7.4 Insignificant Activities.......................

................................................... .............................................42 7.5 Temporary Sources ..............................

................................................... ...........................................42
7.6 Short-term Activities..........................

................................................... .............................................42 7.7 Compliance Schedule/Progress Reports ...........

................................................... ..............................42 7.8 Emissions Trading..............................

................................................... .............................................42 7.9 Acid Rain Requirements .........................

................................................... ........................................42 7.10 Prevention of Accidental Releases (Section 112 (r) of the 1990 CAAA) .............................. ............42 7.11 Stratospheric Ozone Protection Requirements (T itle VI of the CAAA of 1990) ....................... .......44 7.12 Revocation of Existing Permits and Amendments .

................................................... ........................45
7.13 Pollution Prevention..........................

................................................... ..............................................45 7.14 Specific Conditions...........................

................................................... ..............................................45
PART 8.0 GENERAL PROVISIONS .................................

................................................... ..........................46
8.1 Terms and References...........................

................................................... ..........................................46
8.2 EPA Authorities ................................

................................................... ..............................................46 8.3 Duty to Comply.................................

................................................... ..............................................46 8.4 Fee Assessment and Payment .....................

................................................... ....................................47Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

ii 8.5 Permit Renewal and Expiration ..................

................................................... ....................................47 8.6 Transfer of Ownership or Operation.............

................................................... ..................................47 8.7 Property Rights ................................

................................................... ...............................................47
8.8 Submissions ....................................

................................................... ................................................48 8.9 Duty to Provide Information....................

................................................... .......................................48
8.10 Modifications .................................

................................................... .................................................49 8.11 Permit Revision, Revocation, Reopening and Ter mination........................................... ....................49 8.12 Severability ..................................

................................................... ................................................... 50 8.13 Excess Emissions Due to an Emergency ..........

................................................... ..............................50 8.14 Compliance Requirements .......................

................................................... .......................................51
8.15 Circumvention.................................

................................................... ................................................53
8.16 Permit Shield.................................

................................................... ..................................................5 4 8.17 Operational Practices .........................

................................................... .............................................54
8.18 Visible Emissions.............................

................................................... ...............................................54 8.19 Fuel-burning Equipment ........................

................................................... .........................................54
8.20 Sulfur Dioxide................................

................................................... .................................................55
8.21 Particulate Emissions .........................

................................................... .............................................55 8.22 Fugitive Dust.................................

................................................... ..................................................5 6 8.23 Solvent Metal Cleaning........................

................................................... ...........................................56
8.24 Incinerators..................................

................................................... ................................................... .57 8.25 Volatile Organic Liquid Handling and Storage ..

................................................... ............................57 8.26 Use of Any Credible Evidence or Information ...

................................................... ............................58 8.27 Diesel-Fired Internal Combustion Engines......

................................................... ...............................58
Attachments ........................................

................................................... ................................................... ................59
A. List of Standard Abbreviations and List of Permi t Specific Abbreviations B. Insignificant Activities Checklist, Insignifican t Activities Based on Emission Levels and Generic Emission Groups
C. List of ReferencesTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 1 of 59 PART 1.0 FACILITY DESCRIPTION

1.1 Site Determination

There are no other facilities which could possibly be contiguous or adjacent and under common
control.

1.2 Previous and/or Other Names

Owens Corning Fiberglas Corporation

Owens Corning – Fairburn Plant

1.3 Overall Facility Process Description

Raw Material Handling and Batch Charging

Raw materials including sand, cullet, and other com pounds are delivered to the plant by trucks and rail cars. The raw material delivery and handling s ystem includes an unloading grate; batch house storage bins; and batch transfer, weighing, and mix ing equipment. Raw materials are fed from the batch charging operations to the FG-1, FG-2, and FG -3 electric glass melting furnaces (FG11, FG21, and FG31).

Particulate matter (PM) is emitted during raw mater ial handling and batch charging.

Electric Cold Top Furnaces

There are three cold top electric furnaces (FG11, F G21, and FG31) which supply thermal energy to the mixed glass batch via resistive heating from un der glass electrodes. Each furnace is equipped with natural gas /propane backup burners, which are utilized only during startup periods or extended power losses to maintain the furnace operating temp erature. Fiberglass production is halted during such periods.

PM, PM 10 , PM 2.5 , Sulfur dioxide (SO 2 ), Volatile Organic Compound (VOC), Carbon monoxide (CO), and Nitrogen oxides (NO
x ) are emitted from the cold furnaces

Risers/Channels and Forehearths

The molten glass exiting each furnace flows via gra vity through a conditioning riser/channel (FG12, FG22, FG32) into the forehearth (FG23, FG23, FG33). The forehearth then delivers the molten glass to the forming section. The FG-1 and FG-3 Riser/Cha nnel and Forehearths (FG12, FG32, FG13, FG33) are heated with natural gas. The FG-2 Riser/C hannel and Forehearth utilize an enclosed Riser/Channel and Forehearth (FG22 and FG23) that d oes not generally require natural gas for heating.

PM, PM 10 , PM 2.5 , SO 2 , VOC, CO, and NO
x are emitted from the risers/channels, and the fore hearths.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 2 of 59 Forming Sections

In the forming sections (FG14, FG24, FG34) molten g lass in spinners cause streams of molten glass to go into a space where air is blowing down the mo lten glass to form a downward flowing veil of glass fibers. The veil is first sprayed with water for cooling, and then coated with a phenol/formaldehyde resin-based binder solution. Th e coated fibers are collected and formed into a pack on a horizontal conveyor.

Each manufacturing line is equipped with a dropout box system located below the forming conveyors to collect fibers that pass through the forming cha in. Each dropout box system (G1S, G2S, G3s) contains a proprietary non-traditional scrubbing sy stem that serves to remove fiber entrained in the forming section exhaust. The fibers collected in th e dropout box system are generally larger than 10 microns. Exhaust from the dropout box is combined w ith exhaust from the curing section incinerator in the respective mixing chamber for each manufactu ring line before being emitted to the atmosphere.

PM, PM 10 , PM 2.5 , SO 2 , VOC (formaldehyde, phenol, methanol), CO, NO
x , and ammonia are emitted from the forming sections.

Curing Sections

After forming, the fiberglass pack enters its curin g oven (FG15, FG25, FG35). A curing oven is comprised of zones that drive combustion air either upwards or downwards through the pack to drive off water and thermally cure the binder. Emissions from each curing oven is controlled by a Thermal Incinerator (G1I, G2I, G3I). As indicated above, ex haust from the curing section incinerator is combined with exhaust from the forming section in t he respective mixing chambers for each manufacturing line before being emitted to the atmo sphere.

PM, PM 10 , PM 2.5 , SO 2 , VOC (formaldehyde, phenol, methanol), CO, NO
x , and ammonia are emitted from the curing sections.

Cooling Sections

The cured pack enters the Cooling Section (FG16, FG 26, FG36) where air is drawn through the pack to cool it. The FG-1 Cooling Section is equipped wi th an aerofilter (G1A) that aids in the removal of large particles (diameter greater than 10 microns) from the air exhaust. The FG-2 Cooling Section is equipped with an aerofilter (G2A) and a smoke strip per (G2SS) that aid in the removal of PM from the exhaust air, while the FG-3 Cooling Section is equipped with a Venturi Scrubber (G3W) that aids
in the removal of PM from the air exhaust.

PM, PM 10 , PM 2.5 , SO 2 , and VOC (formaldehyde, phenol, methanol) are emit ted from the cooling
sections.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 3 of 59 Final Finishing

After cooling, the fiberglass product is trimmed to set the final width and cut to length. Various products made on FG-1 or FG-2 require the addition of a vapor barrier facing. This facing is generally Kraft paper or foil, and is bonded to one side of the fiberglass product with an asphaltbased adhesive in the asphalt application process ( FG18 or FG28). A flexographic printing press (FG17 or FG27) then applies the Owens Corning Insul ating Systems (OCIS) logo and product information to the outward side of the product faci ng. Not all products made on the FG-1 or FG-2 requires the addition of facing material. Such prod ucts are marked directly on the fiberglass product with one of two inkjet printers. The marked product s are then compressed and packaged in bags or rolled up.

PM 10 and VOC are emitted from the finishing sections.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 4 of 59 PART 2.0 REQUIREMENTS PERTAINING TO THE ENTIRE FACI LITY

2.1 Facility Wide Emission Caps and Operating Limit s

None applicable.

2.2 Facility Wide Federal Rule Standards

None applicable.

2.3 Facility Wide SIP Rule Standards

None applicable.

2.4 Facility Wide Standards Not Covered by a Federa l or SIP Rule and Not Instituted as an Emission Cap or Operating Limit

None applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 5 of 59 PART 3.0 REQUIREMENTS FOR EMISSION UNITS

Note: Except where an applicable requirement specif ically states otherwise, the averaging times of any of
the Emissions Limitations or Standards included in this permit are tied to or based on the run time(s) specified for the applicable reference test method(s) or procedures required for demonstrating compliance.

3.1 Emission Units

Emission Units Specific Limitations/Requirements Air Pollution Control Devices

ID No. Description Applicable Requirements/Standards Corresponding Permit
Conditions ID No. Description

FG11 FG-1 Furnace 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.1, 3.2.2, 3.2.3, 3.2.7, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.6, 3.4.1, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.9, 5.2.2, 5.2.5, 5.2.9, 5.2.10, 5.2.11, 6.1.7b.i-ii, 6.1.7b.xi, 6.1.7c.i-ii, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.5, 6.2.7, 6.2.8 Batch Water Spray System

FG12 FG-1 Riser/Channel GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(yy) 3.2.14, 3.2.15, 3.4.1, 3.4.3, 3.4.6, 5.2.11, 6.1.8 N/A N/A

FG13 Forehearth GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(yy) 3.2.14, 3.2.15, 3.4.1, 3.4.3, 3.4.6, 5.2.11, 6.1.8 N/A N/A

FG14 FG-1 Forming Section 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.5, 3.2.6, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.8, 4.2.10, 5.2.4, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.2.18, 6.1.7b.vi-viii, 6.1.7b.xv, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.3, 6.2.7, 6.2.17 G1S Proprietary Wet Scrubber

FG15 FG-1 Curing Oven 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.4, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.7, 4.2.10, 5.2.1, 5.2.3, 5.2.6, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.18, 6.1.7b.iii, 6.1.7b.vii, 6.1.8, 6.2.1, 6.2.3, 6.2.6,
6.2.7 G1I Incinerator

FG16 FG-1 Cooling Section 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 3.5.1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.10, 5.2.6, 5.2.9, 5.2.10, 5.2.12, 5.2.16, 6.1.7b.vii, 6.1.7c.vi, 6.1.8, 6.2.1, 6.2.3, 6.2.7 G1A Aerofilter

FG17 FG-1 Flexographic

Printing GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(mm) 3.4.3, 3.4.7, 6.1.7b.ix-x, 6.1.8, 6.2.9, 6.2.10 N/A N/ATitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 6 of 59 Emission Units Specific Limitations/Requirements Air Pollution Control Devices

ID No. Description Applicable Requirements/Standards Corresponding Permit
Conditions ID No. Description

FG18 FG-1 Asphalt Coating 40 CFR 63, Subpart A 40 CFR 63, Subpart JJJJ GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) 3.3.2, 3.3.4, 3.3.8, 3.4.2, 3.4.3, 4.2.14, 4.2.15, 6.1.7b.xvi, 6.1.8, 6.2.15,
6.2.16 N/A N/A

FG21 FG-2 Furnace 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.1, 3.2.2, 3.2.3, 3.2.8, 3.2.10, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.6, 3.4.1, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.9, 5.2.2, 5.2.5, 5.2.9, 5.2.10, 5.2.11, 6.1.7b.i-ii, 6.1.7b.xi, 6.1.7b.xiii, 6.1.7c.i, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.5, 6.2.7, 6.2.8, 6.2.12 Batch Water Spray System

FG22 FG-2 Riser/Channel GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) 3.4.1, 3.4.3, 6.1.8 N/A N/A

FG23 FG-2 Forehearth GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) 3.4.1, 3.4.3, 6.1.8 N/A N/A

FG24 FG-2 Forming Section 40 CFR 60, Subpart A 40 CFR 60, Subpart PPP 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.5, 3.2.6, 3.2.9, 3.2.10, 3.2.11, 3.2.13, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.5, 3.3.7, 3.3.9, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.8, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 5.2.4, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.2.11, 5.2.12,5.2.14, 5.2.19, 6.1.7b.viviii, 6.1.7b.xii, 6.1.7b.xiv-xv, 6.1.7c.v, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.3, 6.2.7, 6.2.11,
6.2.13 G2S Proprietary Wet Scrubber

FG25 FG-2 Curing Oven 40 CFR 60, Subpart A 40 CFR 60, Subpart PPP 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.4, 3.2.9, 3.2.10, 3.2.11, 3.2.13, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.5, 3.3.7, 3.3.9, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.7, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 5.2.1, 5.2.3, 5.2.6, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.19, 6.1.7b.iii, 6.1.7b.vii, 6.1.7b.xii, 6.1.7b.xiv, 6.1.8, 6.2.1, 6.2.3, 6.2.6, 6.2.7, 6.2.11, 6.2.13 G2I Incinerator

FG26 FG-2 Cooling Section 40 CFR 60, Subpart A 40 CFR 60, Subpart PPP 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) 3.2.9, 3.2.10, 3.2.12, 3.2.13, 3.3.1, 3.3.3, 3.3.5, 3.3.7, 3.3.9, 3.4.2, 3.4.3, 3.5.1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.10, 4.2.11, 4.2.12, 4.2.13, 5.2.6, 5.2.9, 5.2.10, 5.2.12, 5.2.17, 6.1.7b.vii, 6.1.7b.xii, 6.1.7b.vii, 6.1.7b.xiv, 6.1.7c.iii-iv, 6.1.7c.vi, 6.1.8, 6.2.1, 6.2.3, 6.2.7, 6.2.11, 6.2.13, 6.2.14 G2A
G2SS Aerofilter

Smoke StripperTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 7 of 59 Emission Units Specific Limitations/Requirements Air Pollution Control Devices

ID No. Description Applicable Requirements/Standards Corresponding Permit
Conditions ID No. Description

FG27 FG-2 Flexographic

Printing GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(mm) 3.4.3, 3.4.7, 6.1.7b.ix-x, 6.1.8, 6.2.9, 6.2.10 N/A N/A

FG28 FG-2 Asphalt Coating 40 CFR 63, Subpart A 40 CFR 63, Subpart JJJJ GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) 3.3.2, 3.3.4, 3.3.8, 3.4.2, 3.4.3, 4.2.14, 4.2.15, 6.1.7b.xvi, 6.1.8, 6.2.15,
6.2.16 N/A N/A

FG31 FG-3 Furnace 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.1, 3.2.2, 3.2.3, 3.2.7, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.6, 3.4.1, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.9, 5.2.2, 5.2.5, 5.2.9, 5.2.10, 5.2.11, 6.1.7b.i-ii, 6.1.7b.xi, 6.1.7c.i-ii, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.5, 6.2.7, 6.2.8 Batch Water Spray System

FG32 FG-3 Riser/Channel GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(yy) 3.2.14, 3.2.15, 3.4.1, 3.4.3, 3.4.6, 5.2.11, 6.1.8 N/A N/A

FG33 FG-3 Forehearth GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(e) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(yy) 3.2.14, 3.2.15, 3.4.1, 3.4.3, 3.4.6, 5.2.11, 6.1.8 N/A N/A

FG34 FG-3 Forming Section 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.5, 3.2.6, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.8, 4.2.10, 5.2.4, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.15, 5.2.20, 6.1.7b.vi-viii, 6.1.7b.xv, 6.1.7d.i, 6.1.8, 6.2.1, 6.2.3, 6.2.7, 6.2.17 G3S Proprietary Wet Scrubber

FG35 FG-3 Curing Oven 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(g) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) GA Rule 391-3-1-.02(2)(yy) 3.2.4, 3.2.14, 3.2.15, 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 3.4.6, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.7, 4.2.10, 5.2.1, 5.2.3, 5.2.6, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.20, 6.1.7b.iii, 6.1.7b.vii, 6.1.8, 6.2.1, 6.2.3, 6.2.6,
6.2.7 G3I Incinerator

FG36 FG-3 Cooling Section 40 CFR 63, Subpart A 40 CFR 63, Subpart NNN GA Rule 391-3-1-.02(2)(b) GA Rule 391-3-1-.02(2)(oo) GA Rule 391-3-1-.02(2)(tt) 3.3.1, 3.3.3, 3.3.7, 3.4.2, 3.4.3, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.10, 5.2.2, 5.2.6, 5.2.9, 5.2.10, 6.1.7b.iv, 6.1.7b.v, 6.1.7b.vii, 6.1.8, 6.2.1, 6.2.3, 6.2.4,
6.2.7 G3W Venturi Scrubber

Plant Roads GA Rule 391-3-1-.02(2)(n) 3.4.4, 3.4.5 , 6.2.2 N/A N/A * Generally applicable requirements contained in t his permit may also apply to emission units listed above.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 8 of 59 3.2 Equipment Emission Caps and Operating Limits

3.2.1 The Permittee shall initiate corrective actio n within 1 hour when the average glass pull rate of any 4-hour block period for glass melting furnac e FG11, FG21 or FG31, exceeds the average glass pull rate established for that melter during the performance test by greater than 20 percent and shall complete corrective actio ns in a timely manner according to the procedures in the operations, maintenance, and moni toring plan. [Subpart NNN - 40 CFR 63.1382(b)(5)(i)]

3.2.2 The Permittee shall implement a Quality Impro vement Plan (QIP) consistent with the compliance assurance monitoring provisions of 40 CF R 64, Subpart D when the glass pull rate for a melter exceeds, by more than 20 percent, the average glass pull rate established during the performance test as specified in Conditi on No. 4.2.3 for more than 5 percent of the total operating time in a 6-month block reporti ng period. [Subpart NNN - 40 CFR 63.1382(b)(5)(ii)]

3.2.3 The Permittee shall operate glass melting fur naces FG11, FG21 and FG31 such that the glass pull rate from each melter does not exceed, b y more than 20 percent, the average glass pull rate established during the performance test a s specified in Condition No. 4.2.3 for more than 10 percent of the total operating time in a 6-month block reporting period. [Subpart NNN; 40 CFR 63.1382(b)(5)(iii)]

3.2.4 The Permittee shall operate each incinerator (G1I, G2I, or G3I) used to control formaldehyde emissions from curing such that any 3- hour block average temperature in the firebox does not fall below the average established during the performance test. [Subpart NNN - 40 CFR 63.1382(b)(6)]

3.2.5 The Permittee shall in the formulation of the binder, use a resin with a free-formaldehyde content that does not exceed the free-formaldehyde range contained in the specifications for the resin used during the performance test determin ed in accordance with Condition No.
4.2.5. [Subpart NNN - 40 CFR 63.1382(b)(9)]

3.2.6 The Permittee shall use a binder formulation that does not vary from the specifications and operating range established and used during the per formance test determined in accordance
with Condition No. 4.2.5. The addition of urea and/ or lignin in the binder formulation shall not constitute a change in the binder formulation. [Subpart NNN - 40 CFR 63.1382(b)(10)]

3.2.7 The Permittee shall not discharge or cause th e discharge into the atmosphere from the FG11or FG31 glass melting furnace, nitrogen oxides (NO
x ) emissions in excess of 13.5 pounds per ton of molten glass pulled. [391-3-1-.03(2)(c) and 391-3-1-.02(2)(yy)]

3.2.8 The Permittee shall not discharge or cause th e discharge into the atmosphere from the FG21 glass melting furnace, nitrogen oxides (NO
x ) emissions in excess of 8.9 pounds per ton of molten glass pulled. [391-3-1-.03(2)(c), 391-3-1-.02(2)(yy), and NSR-avo idance]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 9 of 59 3.2.9 The Permittee shall not operate the FG-2 form ing, curing, or cooling sections (ID Nos. FG24, FG25, and FG26) in excess of 8,450 hours duri ng any 12 consecutive month period. [391-3-1-.03(2)(c) and NSR-avoidance]

3.2.10 The Permittee shall not pull in excess of 53 ,108 tons of glass through the FG-2 furnace (FG21), and shall not pull in excess of 51,229 tons of glass through the FG-2 line, during any 12 consecutive month period. [391-3-1-.03(2)(c) and NSR-avoidance]

3.2.11 The Permittee shall not discharge or cause t he discharge into the atmosphere from the FG-2 forming and curing sections (ID Nos. FG24 and FG25) PM 10 emissions in excess of 29.5
lb/hr. [391-3-1-.03(2)(c) and NSR-avoidance]

3.2.12 The Permittee shall not discharge or cause t he discharge into the atmosphere from the FG-2 cooling sections (ID Nos. FG26) PM 10 emissions in excess of 1.50 lb/hr. [391-3-1-03(2)(c) and NSR-avoidance]

3.2.13 the Permittee shall not discharge or cause t he discharge into the atmosphere from the FG-2 forming, curing, or cooling sections (ID Nos. FG24, FG25, and FG26) NO

x emissions in
excess of 9.6 lb/hr. [391-3-1-.03(2)(c) and NSR-avoidance]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 10 of 59 3.2.14 The Permittee shall maintain all burners use d in the following emission units in a manner
which minimizes NO
x emissions. This includes the use of low NO
x burner replacements when necessary for maintenance purposes: [391-3-1-.03(2)(c) and 391-3-1-.02(2)(yy)]

Emission Units

ID No. Description Burner Recommendation

FG11 FG-1 Furnace

FG21 FG-2 Furnace

FG31 FG-3 Furnace Customized burners are recommended during startup, shutdown, and malfunction of any electric glass melting furnace.

FG12 FG-1 Riser/Channel

FG32 FG-3 Riser/Channel Customized burners are
recommended to maintain the temperature of the molten glass
enroute to the forehearth.

FG13 FG-1 Forehearth

FG33 FG-3 Forehearth Customized burners are
recommended to maintain the temperature of the molten glass prior to fiberizing of the molten glass. FG14 FG-1 Forming FG24 FG-2 Forming FG34 FG-3 Forming Customized burners are recommended to maintain glass temperature and aid the fiberizing of the molten glass. FG15 FG-1 Curing FG25 FG-2 Curing FG-35 FG-3 Curing Low NO
x burners are
recommended to cure the binder.

3.2.15 The Permittee shall use natural gas and/or p ropane to fire all burners specified in Condition
3.2.14. [391-3-1-.03(2)(c)]

3.3 Equipment Federal Rule Standards

3.3.1 The Permittee shall comply with all applicabl e provisions of the National Emission Standard for Hazardous Air Pollutants (NESHAP) as f ound in 40 CFR Part 63, in Subpart A – “General Provisions,” as indicated in Table 1 t o Subpart NNN of Part 63-Applicability of General Provisions (40 CFR Part 63, Subpart A) t o Subpart NNN. [40 CFR 63, Subpart A]

3.3.2 The Permittee shall comply with all applicabl e provisions of the National Emission Standard for Hazardous Air Pollutants (NESHAP) as f ound in 40 CFR Part 63, in Subpart A – “General Provisions,” as indicated in Table 2 t o Subpart JJJJ of Part 63-Applicability of 40 CFR Part 63 GENERAL PROVISIONS to Subpart JJJ J. [40 CFR 63, Subpart A]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 11 of 59 3.3.3 The Permittee shall comply with all applicabl e provisions of 40 CFR 63, Subpart NNN –
“National Emission Standards for Hazardous Air Poll utants for Wool Fiberglass Manufacturing”. Conditions within this permit that represent the requirements of 40 CFR Part 63, Subpart NNN were effective on and after Ju ne 14, 2002, with the exception of the
initial notification which was due earlier. [40 CFR 63, Subpart NNN]

3.3.4 The Permittee shall comply with all applicabl e provisions of 40 CFR 63, Subpart JJJJ –
“National Emission Standards for Hazardous Air Poll utants: Paper and Other Web Coating”. Conditions within this permit that repre sent the requirements of 40 CFR Part 63, Subpart JJJJ were effective on and after December 5 , 2005, with the exception of the initial
notification which was due earlier. [40 CFR 63, Subpart JJJJ]

3.3.5 The Permittee shall comply with Georgia Rule for Air Quality Control 391-3-1-.02(8)(b)5., which incorporates by reference 40 CFR Part 60 Subp art PPP, as these rules pertain to the FG-2 Manufacturing Line with ID Nos. FG24, FG25, an d FG26. The Permittee shall operate the FG-2 Manufacturing Line with ID Nos. FG 24, FG25, and FG26 in compliance with the provisions of the New Source Performance S tandards (NSPS) found in 40 CFR Part 60 Subpart A - "General Provisions" and Subpar t PPP - "Standards of Performance for Wool Fiberglass Insulation Manufacturing Plants." [40 CFR 60 Subpart A and Subpart PPP]

3.3.6 The Permittee shall not discharge or cause th e discharge into the atmosphere from each electric melting furnace (ID No. FG11, FG21, or FG3 1) any gases that contain particulate matter in excess of 0.5 pound per ton of molten gla ss pulled from the furnace. [Subpart NNN - 40 CFR 63.1382(a)(1)]

3.3.7 The Permittee shall not discharge or cause th e discharge into the atmosphere from rotary spin fiberglass manufacturing lines FG-1 (FG14, FG1 5, FG-16), FG-2 (FG24, FG25, FG26), or FG-3 (FG34, FG35, FG36) any gases that co ntain formaldehyde in excess of 1.2 pounds per ton of molten glass pulled. [Subpart NNN - 40 CFR 63.1382(a)(2)(i)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 12 of 59 3.3.8 The Permittee shall not discharge or cause th e discharge into the atmosphere from each asphalt application station (ID No. FG18 or FG28) a ny gases that contain organic hazardous air pollutant (HAP) emissions to the leve l specified in either of the following: [Subpart JJJJ - 40 CFR 63.3320(b)(1), (2), or (3)]

a. No more than 5 percent of the organic HAP applie d for each month (95 percent reduction), or

b. No more than 4 percent of the mass of coating ma terials applied for each month, or

c. No more than 20 percent of the mass of coating soli ds applied for each month.

3.3.9 The Permittee shall not discharge or cause to be discharged into the atmosphere from the FG-2 fiberglass manufacturing line (ID Nos. FG24, F G25, and FG26) any gases that contain particulate matter in excess of 11.0 pounds per ton of glass pulled. [Subpart PPP - 40 CFR 60.682]

3.4 Equipment SIP Rule Standards

3.4.1 The Permittee shall not cause, let, permit, s uffer, or allow the rate of emissions, from any melting furnace (FG11, FG21, or FG31), any riser (F G12, FG22, or FG32), or any forehearth (FG13, FG23, or FG33), particulate matte r in total quantities equal to or exceeding the allowable rate calculated as follows: [Rule 391-3-1-.02(2)(e)1.(i)]

For process input weight rate up to and including 3 0 tons per hour,

E = 4.1P 0.67

For process input weight rate above 30 tons per hou r,

E = 55P 0.11 -40

Where:

E = emission rate in pounds per hour P = process input weight rate in tons per hourTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 13 of 59 3.4.2 The Permittee shall not discharge or cause th e discharge into the atmosphere from the following emission units any gases which contain pa rticulate matter in excess of 0.04 grain per dry standard cubic foot: [Rule 391-3-1-.02(2)(oo)]

Emission Unit

ID No. Stack ID No. Description

FG 14 and FG15 MC1 FG-1 Forming and Curing FG16 AF1 FG-1 Cooling FG18 A1N FG-1 Asphalt Pit FG24 and FG25 MC2 FG-2 Forming and Curing FG26 AF2 FG-2 Cooling FG28 A2S FG-2 Asphalt Pit FG34 and FG35 MC3 FG-3 Forming and Curing FG36 SC3 FG-3 Cooling

3.4.3 The Permittee shall not discharge into the at mosphere from any emission point of the following emission units any gases which exhibit op acity equal to or greater than 40
percent: [391-3-1-.02(2)(b)]

Emission Units

ID No. Stack ID No. Description

FG 11 F1N/F1S FG-1 Furnace FG12, FG13 FHRV FG-1 Riser and Forehearth FG14, FG15 MC1 FG-1 Forming and Curing FG16 AF1 FG-1 Cooling FG17 FG-1 Flexographic Printing FG18 A1N FG-1 Asphalt Pit

FG21 F2N/F2S FG-2 Furnace FG22, FG23 FHRV FG-2 Riser and Forehearth FG24, FG25 MC2 FG-2 Forming and Curing FG26 AF2 FG-2 Cooling FG27 FG-2 Flexographic Printing FG28 A2S FG-2 Asphalt Pit

FG31 F3 FG-3 Furnace FG32, FG33 FHRV FG-3 Riser and Forehearth FG34, FG35 MC3 FG-3 Forming and Curing FG36 SC3 FG-3 CoolingTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 14 of 59 3.4.4 The Permittee shall not discharge or cause th e discharge into the atmosphere from the plant roads any fugitive dust which exhibits opacity equa l to or greater than 20 percent. [391-3-1-.02(2)(n)]

3.4.5 The Permittee shall take all reasonable preca utions to prevent dust from becoming airborne including, but not limited to, the application of w ater or other suitable chemicals to control fugitive dust from roads. [391-3-1-.02(2)(n)]

3.4.6 The Permittee shall not burn fuel containing more than 2.5 percent sulfur, by weight, in the following emission units: [391-3-1-.02(2)(g)]

Emission Units

ID No. Stack ID No. Description

FG 11 F1N/F1S FG-1 Furnace FG12, FG13 FHRV FG-1 Riser and Forehearth FG14, FG15 MC1 FG-1 Forming and Curing

FG21 F2N/F2S FG-2 Furnace FG24, FG25 MC2 FG-2 Forming and Curing

FG31 F3 FG-3 Furnace FG32, FG33 FHRV FG-3 Riser and Forehearth FG34, FG35 MC3 FG-3 Forming and Curing

3.4.7 The Permittee shall not cause, let, permit, s uffer, or allow the operation of a packaging rotogravure, publication rotogravure or flexographi c printing facility unless for packaging rotogravure and flexographic printing, the VOC cont ent of any ink or coating as applied is equal to or less than one of the following: [391-3-1-02(2)(mm)]

a. 25 percent by volume of the volatile content of the coating or ink.

b. 40 percent by volume of the coating or ink, min us water.

c. 0.5 pounds of VOC per pound of coating solids.

As an alternative to compliance with the limits in Paragraphs a, b, or c of this condition, the Permittee may comply with the Rule (mm) by:

d. Averaging on a 24-hour weighted basis the VOC co ntent of all inks and coatings, as applied, on a single printing line, where the avera ge does not exceed the limits in Paragraphs a, b, or c. Averaging across lines is no t allowed.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 15 of 59 3.5 Equipment Standards Not Covered by a Federal or SIP Rule and Not Instituted as an Emission Cap or Operating Limit

3.5.1 The Permittee shall maintain an inventory of fiberglass filter media such that an adequate supply of media is on hand to assure a continuous s upply of media for each aerofilter and the smoke stripper. [391-3-1-.03(2)(c)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 16 of 59 PART 4.0 REQUIREMENTS FOR TESTING

4.1 General Testing Requirements

4.1.1 The Permittee shall cause to be conducted a p erformance test at any specified emission unit when so directed by the Environmental Protection Di vision (“Division”). The test results shall be submitted to the Division within 60 days o f the completion of the testing. Any tests shall be performed and conducted using method s and procedures that have been previously specified or approved by the Division. [391-3-1-.02(6)(b)1(i)]

4.1.2 The Permittee shall provide the Division thir ty (30) days (or sixty (60) days for tests required by 40 CFR Part 63) prior written notice of the date of any performance test(s) to afford the Division the opportunity to witness and/ or audit the test, and shall provide with the notification a test plan in accordance with Div ision guidelines. [391-3-1-.02(3)(a)]

4.1.3 Performance and compliance tests shall be con ducted and data reduced in accordance with applicable procedures and methods specified in the Division’s Procedures for Testing and Monitoring Sources of Air Pollutants. The methods for the determination of compliance with emission limits listed under Sections 3.2, 3.3 , 3.4 and 3.5 are as follows:

a. Method 1 shall be used for selection of sampling site and number of traverse points.

b. Method 2 shall be used to determine stack gas flow rate.

c. Method 3 or 3A shall be used to determine gas mo lecular weight.

d. Method 4 shall be used to determine moisture con centration.

e. Except as in (f) and (g) below, Method 5 shall b e used to determine the Particulate
Matter concentration. Each run shall consist of a m inimum run time of 2 hours and a minimum sample volume of 60 dry standard cubic feet (dscf). The probe and filter holder heating system may be set to provide a gas t emperature no greater than 177 ± 14 °C (350 ± 25°F).

f. Method 5E or 5T shall be used to determine the P articulate Matter concentration for units FG14/FG15, FG16, FG34/FG35, and FG36. The sam pling time and sample
volume shall be at least 120 minutes and 2.55 dscm (90.1 dscf).

g. Method 5E shall be used to determine the Particu late Matter concentration for units FG24/FG24, and FG26. The sampling time and sample v olume shall be at least 120 minutes and 60 dscf. The probe and filter holder he ating system may be set to provide a gas temperature no greater than 177 ± 14°C (350 ± 25°F). [40 CFR 63.1385(a)(5)]

h. Method 7 or 7E shall be used to determine nitrog en oxides concentration.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 17 of 59 i. Method 9 and the procedures of Section 1.3 of th e above referenced document shall be used to determine opacity.

j. Method 24 shall be used to determine the VOC con tent of coatings or inks.

k. Method 316 or Method 318 (Appendix A, 40 CFR 63) shall be used to determine the concentration of formaldehyde. Each run shall consi st of a minimum run time of 1
hour.

l. Methods and procedures contained in Appendix A, 40 CFR 63, Subpart NNN, shall be used to determine the product Loss On Ignition ( LOI).

m. Methods and procedures contained in Appendix B, 40 CFR 63, Subpart NNN, shall be used to determine the free-formaldehyde content of resin.

n. Methods and procedures contained in Appendix C, 40 CFR 63, Subpart NNN, shall be used to determine the product density.

o. Method 311 (Appendix A, 40 Part 63), or an alter native method approved by the Division, shall be used to determine the mass fract ion of organic HAP in coatings and adhesives used in paper and web coating operations.

Minor changes in methodology may be specified or ap proved by the Director or his designee when necessitated by process variables, ch anges in facility design, or improvement or corrections that, in his opinion, re nder those methods or procedures, or portions thereof, more reliable. [391-3-1-.02(3)(a)]

4.2 Specific Testing Requirements

4.2.1 The Permittee shall ensure that all monitorin g systems and equipment are installed, operational, and calibrated. [Subpart NNN - 40 CFR 63.1384(a)(1)]

4.2.2 The Permittee shall monitor and record proces s and add-on control device parameters at least every 15 minutes during any performance testi ng. The arithmetic average for each parameter must be calculated using all of the recor ded measurements for the parameter. [Subpart NNN - 40 CFR 63.1384(a)(2)]

4.2.3 During each performance test(s) required by § 63.7 and §63.1384, the Permittee shall monitor and record the glass pull rate for the appl icable glass melting furnace (FG11, FG21, or FG31) and, if different, the glass pull ra te for the associated rotary spin manufacturing line FG-1, FG-2, or FG-3, respectivel y, every 15 minutes. The Permittee shall determine the arithmetic average of the recor ded measurements for each test run and calculate the average of the three test runs. [Subpart NNN - 40 CFR 63.1384(a)(3)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 18 of 59 4.2.4 The Permittee shall, while conducting perform ance test(s) for rotary spin manufacturing line FG-1, FG-2, or FG-3, be producing the building insulation with the highest Loss On Ignition (LOI) expected to be produced on that line (FG-1, FG-2, or FG-3). [Subpart NNN - 40 CFR 63.1384(a)(8)]

4.2.5 The Permittee shall, while conducting a perfo rmance test for rotary spin manufacturing line FG-1, FG-2, or FG-3, use the resin with the highest free-formaldehyde content. During the test, the Permittee shall monitor and record the fr ee-formaldehyde content of the resin, the binder formulation used, the product LOI, and the p roduct density. [Subpart NNN - 40 CFR 63.1384(a)(9)]

4.2.6 During the performance test(s) of Line FG-1, FG-2, or FG-3 required by §63.7 and §63.1384, the Permittee shall continuously monitor and record the pressure drop across the Venturi Scrubber (ID No. G3W) controlling the FG-3 Cooling Section and the scrubbing liquid flow rate to Scrubber G3W, and establish the minimum and/or maximum value(s) that will be used to determine compliance after the initial compliance test. [391-3-1-.02(6)(b)1(i)]

4.2.7 The Permittee shall, while conducting a perfo rmance test for a rotary spin manufacturing line FG-1, FG-2, or FG-3, continuously record the o perating temperature of the applicable incinerator (G1I, G2I, or G3I) and determine the av erage during each 1-hour test; the average operating temperature of the three 1-hour t ests shall be used to monitor compliance. [Subpart NNN - 40 CFR 63.1384(a)(12)]

4.2.8 The Permittee shall comply with the requireme nts of §63.1384(a)(13), which contains requirements for any short-term experimental produc tion runs using binder formulations or other process modifications where the process param eter values would be outside those established during the performance test required by §63.7 and §63.1384, if doing so without first conducting a performance test. [Subpart NNN - 40 CFR 63.1384(a)(13)]

4.2.9 The Permittee shall use the following equatio n to determine compliance with the PM
emission limits of Conditions Nos. 3.3.6 and 3.4.1 for each glass melting furnace (FG-1, FG-2 or FG-3): [Subpart NNN - 40 CFR 63.1384(b)]

P K Q C E )

)( )( ( 1
=

where:

E = Emission rate of PM, lb/ton of glass pulled C = Concentration of PM, gr/dscf Q = Volumetric flow rate of exhaust gases, dscf/h r K 1 = Conversion factor, 1 lb/7000 gr P = Average glass pull rate, tons/hrTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 19 of 59 4.2.10 The Permittee shall use the following equati on to determine compliance with the formaldehyde emission limit of Condition No. 3.3.7 for each rotary spin manufacturing line (FG14, FG15, and FG16; FG24, FG25, and FG26; or FG3 4, FG35, and FG36): [Subpart NNN - 40 CFR 63.1384(c)]

) 10 )( )( ( )

)( )( )( )( (

6

3 2

1 P K K K Q MW C E =

where:

E = Emission rate of formaldehyde, lb/ton of glas s pulled C = Measured volume fraction of formaldehyde, ppm MW = Molecular weight of formaldehyde, 30.03 g/g-m ol Q = Volumetric flow rate of exhaust gases, dscf/h r K 1 = Conversion factor, 1 lb/453.6 g

K 2 = Conversion factor, 28.3L/ft 3

K 3 = Conversion factor, 24.45 L/g-mol P = Average glass pull rate, tons/hr

4.2.11 During any performance test of the FG-2 rota ry spin manufacturing line, required by §60.8 and §60.682, the Permittee shall monitor and record the liquid flow rate across scrubber G2S, controlling the FG-2 Forming Section, every 30 minutes during each 2-hour test run.
The recorded values shall be submitted to the Divis ion, along with the test report(s). [Subpart PPP - 40 CFR 60.683(a), 40 CFR 60.684(a), and a Determination by EPA Region 4 dated Oct. 27, 2004]

4.2.12 The average glass pull rate (Pavg) for the F G-2 manufacturing line shall be the arithmetic average of three glass pull rate (Pi) determination s taken at intervals of at least 30 minutes during each run. The individual glass pull rates (P i) shall be computed using the following equation: [Subpart PPP - 40 CFR 60.685(c)(3)]

     

− = ) 100 ( 0.1 ) )( )( )( ( ' LOI

M W L K P

m

s i

where:

P i = Glass pull rate at interval “i”, ton/hr

L
s = Line speed, ft/min

W
m = Trimmed mat width, ft LOI = Loss on ignition, weight percent

K ’ = Conversion factor, 0.03 (min-ton)/(hr-lb) M = Mat gram weight, lb/ft 2

4.2.13 The Permittee shall determine the line speed (L
s ), trimmed mat width (W
m ), and mat gram weight (M) for each performance test run on Rotary Spin Fiberglass Manufacturing Line FG24, FG25, and FG26 from the process information o r from direct measurements. [Subpart PPP - 40 CFR 60.685(c)(3)(ii)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 20 of 59 4.2.14 The Permittee shall determine the organic HA P or volatile matter and coating solids content of coating materials used to coat Kraft paper or fo il in the web coating operations (FG18 and FG28) according to procedures in §63.3360(c) an d (d) and if applicable determine the
mass of volatile matter retained in the coated web or otherwise not emitted to the atmosphere according to §63.3360(g). [Subpart JJJJ – 40 CFR 63.3360(a)(1)]

4.2.15 The Permittee shall demonstrate that all coa tings and adhesives used to coat Kraft paper or foil in the web coating operations (FG18 and FG28), which are subject to 40 CFR 63 Subpart JJJJ, have a mass fraction of organic HAP i n the material that is less than 0.04 (4.0 weight percent) or that the mass fraction of organi c HAP in the materials’ solids is less than 0.20 (20.0 weight percent) by following the procedu res set out in §63.3370(b) if the coating material is used “as purchased” or by following the procedures set out in §63.3370(c)(1), (c)(2), (c3), and (c)(4) if the coating material is used “as applied.” [Subpart JJJJ - 40 CFR 63.3370(a)(1) and (2)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 21 of 59 PART 5.0 REQUIREMENTS FOR MONITORING (Related to Da ta Collection)

5.1 General Monitoring Requirements

5.1.1 Any continuous monitoring system required by the Division and installed by the Permittee shall be in continuous operation and data recorded during all periods of operation of the affected facility except for continuous monitoring system breakdowns and repairs. Monitoring system response, relating only to calibr ation checks and zero and span adjustments, shall be measured and recorded during such periods. Maintenance or repair shall be conducted in the most expedient manner to minimize the period during which the system is out of service. [391-3-1-.02(6)(b)1]

5.2 Specific Monitoring Requirements

5.2.1 The Permittee shall install, calibrate, maint ain, and operate a system to continuously monitor and record the indicated parameters on the following equipment. Where such performance specification(s) exist, each system sha ll meet the applicable performance specification(s) of the Division's monitoring requi rements. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i), and Subp art NNN - 40 CFR 63.1383(g)(1), (h)]

a. The temperature in the firebox of each incinerat or (G1I, G2I, and G3I).

5.2.2 The Permittee shall install, calibrate, maint ain, and operate monitoring devices for the measurement of the indicated parameters on the foll owing equipment. Data shall be recorded at the frequency specified below. Where s uch performance specification(s) exist, each system shall meet the applicable performance s pecification(s) of the Division's monitoring requirements. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i), and Subp art NNN - 40 CFR 63.1383(f)(1)]

a. Glass pull rate on Furnaces FG11, FG21, and FG31 . Data shall be recorded hourly.

b. Water flow rate to the batch wetting system on F urnaces FG11, FG21, and FG31. Data shall be recorded twice per operating shift. T he time interval between recordings shall be at least six hours but no more than eight hours.

c. Water flow rate to Wet Scrubber G3W. Data shall be recorded hourly.

d. Pressure drop across Wet Scrubber G3W. Data shal l be recorded hourly.

5.2.3 The Permittee must inspect each incinerator a t least once per year according to the procedures in the OMM plan. At a minimum, an inspec tion must include the following: [Subpart NNN - 40 CFR 63.1383(g)(2)]

a. Inspect all burners, pilot assemblies, and pilot sensing devices for proper operation and clean pilot sensor, as necessary.

b. Ensure proper adjustment of combustion air and a djust, as necessary.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 22 of 59 c. Inspect, when possible, internal structures (for example, baffles), to ensure structural integrity per the design specifications.

d. Inspect dampers, fans, and blowers for proper op eration.

e. Inspect for proper sealing.

f. Inspect motors for proper operation.

g. Inspect combustion chamber refractory lining and clean and repair/replace lining, as

necessary.

h. Inspect incinerator shell for corrosion and/or h ot spots.

i. For the burn cycle that follows the inspection, document that the incinerator is operating properly and make any necessary adjustmen ts.

j. Generally observe that the equipment is maintain ed in good operating condition.

k. Complete all necessary repairs as soon as possib le.

5.2.4 The Permittee shall install, calibrate, maint ain, and operate monitoring devices for the measurement of the indicated parameter on the follo wing equipment. Data shall be recorded at the frequency specified below. Where such perfo rmance specification(s) exist, each system shall meet the applicable performance specif ication(s) of the Division's monitoring requirements. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i); and Subp art PPP - 40 CFR 60.684(a), 60.683(c); and a Determination by EPA Region 4 dated Oct. 27, 2004 (G2S Only)]

a. The water pressure at the outlet of the pump tha t provides water used to wash the walls, floor, and ceiling of each dropout box (ID N os. G1S, G2S, and G3S). Data shall be recorded twice per operating shift. The da ta should be obtained within the first and last four hours of each operating shift.

b. The water flow rate into each dropout box (ID No s. G1S, G2S, and G3S). Data shall be recorded at least once every 4 hours. The monito ring devices must be recalibrated each quarter.

5.2.5 The Permittee shall monitor each glass-meltin g furnace according to the procedures in the OMM plan. The OMM plan for the glass-melting furnac e must contain the following
information: [Subpart NNN - 40 CFR 63.1383]

a. The operating parameter(s) to be monitored and t he minimum and/or maximum values that will be used to identify any operationa l problems.

b. A schedule for monitoring the operational parame ter(s) of the glass-melting furnace.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 23 of 59 c. Record keeping procedures, consistent with the r equirements of §63.1386, to show that each glass-melting furnace parameter is within the limit established during the performance test.

d. Procedures for the proper operation and maintena nce of the batch wetting system.

5.2.6 The Permittee shall monitor and record at lea st once every 8 hours, the product Loss On Ignition (LOI) and the product density of each bond ed wool fiberglass product
manufactured. [Subpart NNN - 40 CFR 63.1383(l)]

5.2.7 The Permittee shall monitor and record the fo rmulation of each batch of binder used. [Subpart NNN - 40 CFR 63.1383(k)]

5.2.8 The Permittee shall monitor and record the fr ee-formaldehyde content of each resin shipment received and used in the formulation of bi nder. [Subpart NNN - 40 CFR 63.1383(j)]

5.2.9 The Permittee shall prepare for each glass-me lting furnace (ID No. FG11, FG21, and FG31) and each rotary spin manufacturing line, a wr itten OMM plan and shall submit the plan to the Division for review and approval. The p lan must include the following
information: [Subpart NNN - 40 CFR 63.1383(a)]

a. Procedures for the proper operation and maintena nce of process modifications and
add-on control devices used to meet the emission li mits in Conditions Nos. 3.3.6 and
3.3.7.

b. Procedures for the proper operation and maintena nce of monitoring devices used to determine compliance, including quarterly calibrati on and certification of accuracy of each monitoring device according to the manufacture r’s instructions.

c. Corrective actions to be taken when process para meters or add-on control device parameters deviate from the limit(s) established du ring the performance test required by §63.7 and §63.1384.

5.2.10 The Permittee may, for all control devices a nd process operating parameters measured during the performance test required by §63.7 and § 63.1384, request the change of any parameter range or value established during a perfo rmance test by conducting additional performance testing to verify that, at the new cont rol device or process parameter levels, the Permittee complies with the applicable emission lim its in Conditions Nos. 3.3.6 and 3.3.7. Any additional performance tests shall be conducted according to the procedures in Part 63, Subpart A and in §63.1384. [Subpart NNN - 40 CFR 63.1383(m)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 24 of 59 5.2.11 The Permittee shall notify the Division in w riting within thirty days whenever there is a replacement of any burner described in Condition 3. 2.14. The notification shall include the type of burner being replaced and the type of the n ew burner. [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

5.2.12 The following pollutant specific emission un it(s) (PSEU) is/are subject to the Compliance Assurance Monitoring (CAM) Rule in 40 CFR 64.

Emission Unit Pollutant FG-1 Forming Section (FG14) PM FG-2 Forming Section (FG24) PM FG-3 Forming Section (FG34) PM FG-1 Cooling Section (FG16) PM FG-2 Cooling Section (FG26) PM FG-1 Forming and Curing Sections (FG14 and FG15)) V OC FG-2 Forming and Curing Sections (FG24 and FG25) VO C FG-3 Forming and Curing Sections (FG34 and FG35) VO C

Permit conditions in this permit for the PSEU(s) li sted above with regulatory citation 40 CFR 70.6(a)(3)(i) are included for the purpose of compl ying with 40 CFR 64. In addition, the Permittee shall meet the requirements, as applicable, of 40 C FR 64.7, 64.8, and 64.9. [40 CFR 64]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 25 of 59 5.2.13 The Permittee shall comply with the performa nce criteria listed in the table below for the
PM emissions from FG-1 Forming Section (FG14)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator No. 1

Water Flow Rate Indicator No. 2

Water Pressure

A. Data Representativeness [64.3(b)(1)] Dropout box water inlet flow rate measured by a flow meter located in the dropout box water inlet line; meter with accuracy within ± 5 percent over operating range.

This requirement is effective on the date of installation of a water flow meter, but no later than January 1, 2010. Water pressure at pump outlet measured by a pressure gauge with accuracy of ±2.5 psi over operating range.

B. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable. Not applicable.

C. QA/QC Practices and Criteria [64.3(b)(3)] Flow meter calibrated quarterly. Pressure gauge cal ibrated quarterly.

D. Monitoring Frequency [64.3(b)(4)] Every four hours. Twice per operating shift,
within the first and last four hours of each operating shift.

Data Collection Procedures [64.3(b)(4)] Manual reading of gauge. Manual reading of monitor.

Averaging Period [64.3(b)(4)] Not applicable. Not applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 26 of 59 5.2.14 The Permittee shall comply with the performa nce criteria listed in the table below for the
PM emissions from FG-2 Forming Sections (FG24)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator No. 1

Water Flow Rate Indicator No. 2

Water Pressure

A. Data Representativeness [64.3(b)(1)] Dropout box water inlet flow rate measured by a flow meter located in the dropout box water inlet line; meter with accuracy within ± 5 percent over operating range. Water pressure at pump outlet measured by a pressure gauge with accuracy of ±2.5 psi over operating range.

B. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable. Not applicable.

C. QA/QC Practices and Criteria [64.3(b)(3)] Flow meter calibrated quarterly. Pressure gauge cal ibrated quarterly.

D. Monitoring Frequency [64.3(b)(4)] Every four hours. Twice per operating shift,
within the first and last four hours of each operating shift.

Data Collection Procedures [64.3(b)(4)] Manual reading of gauge. Manual reading of monitor.

Averaging Period [64.3(b)(4)] Not applicable. Not applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 27 of 59 5.2.15 The Permittee shall comply with the performa nce criteria listed in the table below for the
PM emissions from FG-3 Forming Section (FG34)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator No. 1

Water Flow Rate Indicator No. 2

Water Pressure

A. Data Representativeness [64.3(b)(1)] Dropout box water inlet flow rate measured by a flow meter located in the dropout box water inlet line; meter with accuracy within ± 5 percent over operating range.

This requirement is effective upon the restart of the FG-3 manufacturing line. Water pressure at pump outlet measured by a pressure gauge with accuracy of ±2.5 psi over operating range.

B. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable. Not applicable.

C. QA/QC Practices and Criteria [64.3(b)(3)] Flow meter calibrated quarterly. Pressure gauge cal ibrated quarterly.

D. Monitoring Frequency [64.3(b)(4)] Every four hours. Twice per operating shift,
within the first and last four hours of each operating shift.

Data Collection Procedures [64.3(b)(4)] Manual reading of gauge. Manual reading of monitor.

Averaging Period [64.3(b)(4)] Not applicable. Not applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 28 of 59 5.2.16 The Permittee shall comply with the performa nce criteria listed in the table below for the
PM emissions from FG-1 Cooling Section (FG16)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator
Record of Aerofilter Media Replacement

A. Data Representativeness [64.3(b)(1)] Fiberglass filter media as specified by the
aerofilter manufacturer.

B. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable.

C. QA/QC Practices and Criteria [64.3(b)(3)] Replace filter media once per shift.

D. Monitoring Frequency [64.3(b)(4)] Once per shift.

Data Collection Procedures [64.3(b)(4)] Record once per shift when filter media are replaced. Note in record when filter media are not replaced because emission unit is
offline.

Averaging Period [64.3(b)(4)] Not applicable.

5.2.17 The Permittee shall comply with the performa nce criteria listed in the table below for the
PM emissions from FG-2 Cooling Section (FG26)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator
Record of Aerofilter Media Replacement

E. Data Representativeness [64.3(b)(1)] Fiberglass filter media as specified by the
aerofilter manufacturer.

F. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable.

G. QA/QC Practices and Criteria [64.3(b)(3)] Replace filter media once per shift.

H. Monitoring Frequency [64.3(b)(4)] Once per shift.

Data Collection Procedures [64.3(b)(4)] Record once per shift when filter media are replaced. Note in record when filter media are not replaced because emission unit is
offline.

Averaging Period [64.3(b)(4)] Not applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 29 of 59 5.2.18 The Permittee shall comply with the performa nce criteria listed in the table below for the
VOC emissions from the FG-1 Forming and Curing Sections (FG14 and FG15)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator
Temperature

A. Data Representativeness [64.3(b)(1)] The temperature is measured by a thermocouple located in a position that provides a representative firebox temperature. The temperature sensor must have an accuracy of ±4°F.

B. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable.

C. QA/QC Practices and Criteria [64.3(b)(3)] Perform calibration checks and certify accuracy of thermocouple at least once quarterly according to the manufacturers’ instruction, and if necessary replace thermocouple.

At least annually, inspect all components for integrity per condition 5.2.3.

D. Monitoring Frequency [64.3(b)(4)] Continuously.

Data Collection Procedures [64.3(b)(4)] Continuous recording to electronic system.

Averaging Period [64.3(b)(4)] Three-hour block average firebox
temperature.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 30 of 59 5.2.19 The Permittee shall comply with the performa nce criteria listed in the table below for the
VOC emissions from the FG-2 Forming and Curing Sections (FG24 and FG25)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator
Temperature

E. Data Representativeness [64.3(b)(1)] The temperature is measured by a thermocouple located in a position that provides a representative firebox temperature. The temperature sensor must have an accuracy of ±4°F.

F. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable.

G. QA/QC Practices and Criteria [64.3(b)(3)] Perform calibration checks and certify accuracy of thermocouple at least once quarterly according to the manufacturers’ instruction, and if necessary replace thermocouple.

At least annually, inspect all components for integrity per condition 5.2.3.

H. Monitoring Frequency [64.3(b)(4)] Continuously.

Data Collection Procedures [64.3(b)(4)] Continuous recording to electronic system.

Averaging Period [64.3(b)(4)] Three-hour block average firebox
temperature.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 31 of 59 5.2.20 The Permittee shall comply with the performa nce criteria listed in the table below for the
VOC emissions from the FG-3 Forming and Curing Sections (FG34 and FG35)

. [40 CFR 64.6(c)(1)(iii)]

Performance Criteria [64.4(a)(3)] Indicator
Temperature

I. Data Representativeness [64.3(b)(1)] The temperature is measured by a thermocouple located in a position that provides a representative firebox temperature. The temperature sensor must have an accuracy of ±4°F.

J. Verification of Operational Status (new/modified monitoring equipment only) [64.3(b)(2)] Not applicable.

K. QA/QC Practices and Criteria [64.3(b)(3)] Perform calibration checks and certify accuracy of thermocouple at least once quarterly according to the manufacturers’ instruction, and if necessary replace thermocouple.

At least annually, inspect all components for integrity per condition 5.2.3.

L. Monitoring Frequency [64.3(b)(4)] Continuously.

Data Collection Procedures [64.3(b)(4)] Continuous recording to electronic system.

Averaging Period [64.3(b)(4)] Three-hour block average firebox
temperature.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 32 of 59 PART 6.0 RECORD KEEPING AND REPORTING REQUIREMENTS

6.1 General Record Keeping and Reporting Requiremen ts

6.1.1 Unless otherwise specified, all records requi red to be maintained by this Permit shall be recorded in a permanent form suitable for inspectio n and submission to the Division and to
the EPA. The records shall be retained for at leas t five (5) years following the date of
entry. [391-3-1-.02(6)(b)1(i) and 40 CFR 70.6(a)(3)]

6.1.2 In addition to any other reporting requiremen ts of this Permit, the Permittee shall report to the Division in writing, within seven (7) days, any deviations from applicable requirements associated with any malfunction or breakdown of pro cess, fuel burning, or emissions control equipment for a period of four hours or mor e which results in excessive emissions.

The Permittee shall submit a written report that sh all contain the probable cause of the deviation(s), duration of the deviation(s), and any corrective actions or preventive measures
taken. [391-3-1-.02(6)(b)1(iv), 391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(3)(iii)(B)]

6.1.3 The Permittee shall submit written reports of any failure to meet an applicable emission limitation or standard contained in this permit and /or any failure to comply with or complete a work practice standard or requirement co ntained in this permit which are not otherwise reported in accordance with Conditions 6. 1.4 or 6.1.2. Such failures shall be determined through observation, data from any monit oring protocol, or by any other monitoring which is required by this permit. The r eports shall cover each semiannual period ending June 30 and December 31 of each year, shall be postmarked by the 30th day following the end of each reporting period, July 30 and January 30, respectively, and shall contain the probable cause of the failure(s), durat ion of the failure(s), and any corrective actions or preventive measures taken. [391-3-1-.03(10)(d)1.(i) and 40 CFR 70.6(a)(3)(iii) (B)]

6.1.4 The Permittee shall submit a written report c ontaining any excess emissions, exceedances, and/or excursions as described in this permit and a ny monitor malfunctions for each semiannual period ending June 30 and December 31 of each year. All reports shall be postmarked by the 30th day following the end of eac h reporting period, July 30 and January 30, respectively. In the event that there have not been any excess emissions, exceedances, excursions or malfunctions during a reporting perio d, the report should so state. Otherwise, the contents of each report shall be as specified b y the Division’s Procedures for Testing and Monitoring Sources of Air Pollutants and shall contain the following: [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(iii)(A)]

a. A summary report of excess emissions, exceedance s and excursions, and monitor downtime, in accordance with Section 1.5(c) and (d) of the above referenced document, including any failure to follow required work practice procedures.

b. Total process operating time during each reporti ng period.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 33 of 59 c. The magnitude of all excess emissions, exceedanc es and excursions computed in accordance with the applicable definitions as deter mined by the Director, and any conversion factors used, and the date and time of t he commencement and completion of each time period of occurrence.

d. Specific identification of each period of such e xcess emissions, exceedances, and excursions that occur during startups, shutdowns, o r malfunctions of the affected facility. Include the nature and cause of any malf unction (if known), the corrective action taken or preventive measures adopted.

e. The date and time identifying each period during which any required monitoring system or device was inoperative (including periods of malfunction) except for zero and span checks, and the nature of the repairs, adj ustments, or replacement. When the monitoring system or device has not been inoper ative, repaired, or adjusted, such information shall be stated in the report.

f. Certification by a Responsible Official that, ba sed on information and belief formed after reasonable inquiry, the statements and inform ation in the report are true, accurate, and complete.

6.1.5 Where applicable, the Permittee shall keep th e following records: [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(3)(ii)(A )]

a. The date, place, and time of sampling or measure ment;

b. The date(s) analyses were performed;

c. The company or entity that performed the analyse s;

d. The analytical techniques or methods used;

e. The results of such analyses; and

f. The operating conditions as existing at the time of sampling or measurement.

6.1.6 The Permittee shall maintain files of all req uired measurements, including continuous monitoring systems, monitoring devices, and perform ance testing measurements; all continuous monitoring system or monitoring device c alibration checks; and adjustments and maintenance performed on these systems or devic es. These files shall be kept in a permanent form suitable for inspection and shall be maintained for a period of at least five (5) years following the date of such measurements, reports, maintenance and records. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6 (a)(3)(ii)( B)]

6.1.7 For the purpose of reporting excess emissions , exceedances or excursions in the report required in Condition 6.1.4, the following excess e missions, exceedances, and excursions shall be reported: [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 34 of 59 a. Excess emissions: (means for the purpose of thi s Condition and Condition 6.1.4, any condition that is detected by monitoring or record keeping which is specifically defined, or stated to be, excess emissions by an ap plicable requirement)

None required to be reported in accordance with Con dition 6.1.4.

b. Exceedances: (means for the purpose of this Con dition and Condition 6.1.4, any condition that is detected by monitoring or record keeping that provides data in terms
of an emission limitation or standard and that indi cates that emissions (or opacity) do not meet the applicable emission limitation or stan dard consistent with the averaging period specified for averaging the results of the m onitoring)

i. Any 4-hour block period when the glass pull rate from either Melter FG11, FG21, or FG31 exceeds the average pull rate, establ ished during the most recent performance test for each melter, by more than 20 p ercent.

ii. Any determination that the glass pull rates fro m either Melter FG11, FG21, or FG31 are outside of the ranges established, as requ ired by Condition 4.2.3, during the most recent performance test, for more t han 10 percent of the total operating time of the respective unit in a 6-month block reporting period.

iii. Any 3-hour block period for which the average temperature of any incinerator (G1I, G2I, or G3I) is below the average temperature , established for that incinerator during the most recent performance test

.

iv. Any 3-hour block period for which the average o f any parameter of Wet Scrubber G3W (such as pressure drop and water flow rate), is outside the range established during the most recent performance test

.

v. Any determination that any Scrubber G3W paramete r is outside of the range established, as required by Condition 4.2.6, during the most recent performance

test.

vi. Any determination that a binder formulation is used which varies from the specification and operating range, as required by C ondition 4.2.5, established and used during the most recent performance test.

vii. Any determination that the product LOI or prod uct density of any bonded wool fiberglass product manufactured, monitored and reco rded as required once every 8 hours, is greater than the product LOI or d ensity measured during the most recent performance test.

viii. Any determination that the free-formaldehyde content of a resin shipment received and used in the formulation of binder, is greater than the freeformaldehyde content measured, using the resin with the highest freeformaldehyde content, during the most recent perfor mance test.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 35 of 59 ix. If the Permittee does not use a 24-hour weighte d basis to show compliance with Condition 3.4.7, any time an ink or coating is used on a flexographic printing line (emission unit ID Nos. FG17 and FG27) that doe s not meet at least one of the requirements of Condition 3.4.7. [391-3-1-.02(2)(mm)]

x. If the Permittee uses a 24-hour weighted basis t o show compliance with Condition 3.4.7, any 24-hour weighted basis VOC con tent of inks or coatings used on a flexographic printing line (emission unit ID Nos. FG17 or FG27) that does not meet at least one of the requirements of C ondition 3.4.7. [391-3-1-.02(2)(mm)]

xi. Any calendar week during which the average emis sions of NO
x from glass melting furnaces FG11 or FG31, exceeds 13.5 pounds per ton of glass pulled, or
NO
x emissions from glass melting furnace FG21, exceeds 8.9 pounds per ton of glass pulled as determined by the procedures in Con dition 6.2.8. [391-3-1-.02(2)(yy) and NSR avoidance]

xii. Any month during which the twelve-month rollin g hours of operation of the FG-2 forming, curing, or cooling sections (ID Nos. FG24, FG25, and FG26) exceed 8,450 hours of operation. [NSR avoidance]

xiii. Any month during which the twelve-month rolli ng total glass pulled from the FG-2 furnace exceeds 53,108 tons of glass. [NSR avoidance]

xiv. Any month during which the twelve-month rollin g total from the FG-2 manufacturing line exceeds 51,299 tons of glass pul led. [NSR avoidance]

xv. Any water flow rate into the dropout box with I D Nos. G1S, G2S, and G3S recorded in accordance with Condition 5.2.4b, that is less than 70 percent of the lowest value or greater than 130 percent of the hig hest value of the flow rates recorded during the most recent performance test fo r G2S, or less than 1,050 gallons per minute or greater than 1,160 gallons pe r minute for G1S and G3S.

This requirement is in effect for G2S, is effectiv e for G1S on the date of installation of a water flow meter, but no later th an January 1, 2010, and is effective for G3S upon the restart of the FG-3 manu facturing line. [Subpart PPP - 40 CFR 60.684(d), and a Determinatio n by EPA Region 4 dated Oct. 27, 2004 (G2S only)]

xvi. Any coating or adhesive used in 40 CFR 63 Subp art JJJJ applicable paper and web coating operations that has a mass fraction of organic HAP in the material that exceeds 0.04 (4.0 weight percent) or a mass fr action of organic HAP in the materials’ solids that exceeds 0.20 (20.0 weight pe rcent).Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 36 of 59 c. Excursions: (means for the purpose of this Condi tion and Condition 6.1.4, any departure from an indicator range or value establis hed for monitoring consistent with any averaging period specified for averaging the re sults of the monitoring)

i. Any two consecutive water flow rates, recorded i n accordance with the requirements of Condition 5.2.2b for the batch wett ing systems on Furnaces FG11, FG21, and/or FG31, that are less than 90 perc ent of the average flow rate during the most recent performance test.

ii. Any two consecutive water pressure readings of the pump supplying water to the FG-1 and FG-3 dropout boxes recorded in accorda nce with the requirements of Condition 5.2.4 that are less than 45 psi.

iii. Any two consecutive shifts of operation of the FG-2 Cooling Section (FG26) when the filter media of the smoke stripper (G2SS) is not replaced. [NSR avoidance]

iv. Any day during which the daily downtime associa ted with the routine filter media changes for the smoke stripper (G2SS) exceede d 1 hour. The record shall indicate the amount of time by which it exceeded a total of 1 hour. [NSR avoidance]

v. Any two consecutive water pressure readings of t he pump supplying water to the FG-2 dropout box recorded in accordance with th e requirements of
Condition 5.2.4 that are less than the minimum valu e established during the most recent performance test.

vi. Any two consecutive shifts of operation of the FG-1 Cooling Section (FG16) or the FG-2 Cooling Section (FG26) when the filter med ia of the Aerofilter for the line (G1A for FG-1 and G2A for FG-2) is not replace d.

d. In addition to the excess emissions, exceedances and excursions specified above, the following should also be included with the report r equired in Condition 6.1.4:

i. Any failure to implement any QIP as required by Condition 3.2.2 or 3.2.6.

6.1.8 The Permittee shall provide the Division with a statement, in such form as the Director may prescribe, showing the actual emissions of nitrogen oxides and volatile organic compounds from the entire facility. These statements shall b e submitted every year by the date specified in 391-3-1-.02(6)(a)4 and shall show the actual emissions of the previous calendar

year. [391-3-1-.02(6)(b)1(i)]

6.2 Specific Record Keeping and Reporting Requireme nts

6.2.1 The Permittee shall maintain records describi ng the routine maintenance performed on all air pollution control equipment. [391-3-1-.02(2)(a)10]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 37 of 59 6.2.2 The Permittee shall maintain a record of all actions taken in accordance with Conditions Nos. 3.4.4 and 3.4.5 to suppress fugitive dust from roads, storage piles, or any other source of fugitive dust. Such records shall include the da te and time of occurrence and a description of the actions taken. [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

6.2.3 The Permittee shall maintain records of the f ormulation of each binder batch and the LOI and density for each product manufactured on each r otary spin manufacturing line (FG-1, FG-2, and FG-3) and the free-formaldehyde content o f each resin shipment received and
used in the binder formulation. [Subpart NNN - 40 CFR 63.1386(d)(2)(v)]

6.2.4 The Permittee shall maintain records of scrub ber pressure drop and scrubbing liquid flow
rate for Scrubber G3W. The Permittee shall also mai ntain records of any period when a parameter level deviated from the established limit , the date and time of the deviation, when corrective actions were initiated, the cause o f the deviation, an explanation of the corrective actions taken, and when the cause of the deviation was corrected. [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

6.2.5 The Permittee shall maintain a record of the glass pull rate for each melting furnace (FG11, FG21, and FG31), including any period when the pull rate exceeded the average pull rate established during the performance test by more tha n 20 percent, the date and time of the exceedance, when corrective actions were initiated, the cause of the exceedance, an explanation of the corrective actions taken, and wh en the cause of the exceedance was
corrected. [Subpart NNN - 40 CFR 63.1386(d)(2)(ix)]

6.2.6 The Permittee shall maintain records of each incinerator (ID Nos. G1I, G2I, and G3I) operating temperature and the results of periodic i nspection of each incinerator’s components, including any period when the temperatu re fell below the established average or the inspection identified problems with any inci nerator. The Permittee shall also maintain records of the date and time of the proble m, when corrective actions were initiated, the cause of the problem, an explanation of the corrective actions taken, and when the cause of the problem was corrected. [Subpart NNN - 40 CFR 63.1386(d)(2)(viii)]

6.2.7 The Permittee shall implement a written plan as described in §63.6(e)(3) that contains specific procedures to be followed for operating an d maintaining equipment subject to Subpart NNN during periods of startup, shutdown, an d malfunction and a program of corrective action for malfunctioning process modifi cations and control systems used to comply with the standard. In addition to the requir ements of §63.6(e)(3), the plan shall include the following: [Subpart NNN - 40 CFR 63.1386(c)]

a. Procedures to determine and record the cause of the malfunction and the time the malfunction began and ended.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 38 of 59 b. Corrective actions to be taken in the event of a malfunction of a control device or process modification, including procedures for reco rding the actions taken to correct
the malfunction or minimize emissions.

c. A maintenance schedule, for each control device and process modification, that is
consistent with the manufacturer’s instructions and recommendations for routine and long-term maintenance.

6.2.8 The Permittee shall, each calendar week, dete rmine and record the emissions of Nitrogen Oxides (pounds of NO
x per ton of glass pulled) from each glass-melting e lectric furnace (ID Nos. FG11, FG21, and FG31) using the following procedures; [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

a. Record the quantity (pounds) of NaNO 3 used in each furnace.

b. Calculate pounds of NO
x by multiplying the pounds of sodium nitrate used i n each furnace by 0.541.

c. Record the tons of glass pulled from each furnac e.

d. Calculate the pounds of NO
x per ton of glass pulled for each furnace by dividi ng the pounds of NO
x by the tons of glass pulled.

6.2.9 For the purposes of verifying compliance with Condition 3.4.7, the Permittee shall maintain records specifying the VOC content of each ink or c oating utilized on the flexographic printing lines (emission unit ID Nos. FG17 and FG27 ) expressed in either percent VOC by volume, percent VOC by volume minus water, or pound s VOC per pound of coating solids. For the purposes of this condition, the VOC content used in calculations can be taken from the applicable material safety data sheets or deter mined by testing each and every ink or coating using the appropriate EPA Reference Test me thod. [391-3-1-.02(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

6.2.10 If the Permittee chooses to comply with Cond ition 3.4.7 by use of a 24-hour weighted basis average, the Permittee shall maintain the following records: [391-3-1-.02(2)(6)(b)1 and 40 CFR 70.6(a)(3)(i)]

a. Daily usage records of all materials utilized co ntaining VOCs, which include the total weight of each material and the VOC content of each material.

b. Using the daily usage records required by Paragr aph (a) of this condition, calculate the 24-hour weight average of all coatings used on each flexographic printing line expressed in either percent VOC by volume, percent VOC by volume minus water, or pounds VOC per pound of coating solids.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 39 of 59 6.2.11 The Permittee shall maintain monthly records of the hours of operation for the FG-2 forming, curing, and cooling sections (ID Nos. FG24 , FG25, and FG26). The Permittee shall use the monthly totals to determine twelve mo nth rolling totals for each calendar month. These records shall be kept available for in spection by or submittal to the Division for five years from the date of record within one w eek following the end of each calendar
month. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i), and NSR Avoidance]

6.2.12 The Permittee shall maintain monthly records of glass pulled from the FG-2 furnace (FG21) for each calendar month. The Permittee shall use the monthly totals to determine twelve-month rolling totals for each calendar month . These records shall be kept available for inspection by or submittal to the Division for five years from the date of record within one week following the end of each calendar month. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i), and NSR Avoidance]

6.2.13 The Permittee shall maintain monthly records of glass pulled in fiberglass line FG-2 for
each calendar month. The Permittee shall use the mo nthly totals to determine twelve-month rolling totals for each calendar month. These recor ds shall be kept available for inspection by or submittal to the Division for five years from the date of record within one week following the end of each calendar month. [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i), and NSR Avoidance]

6.2.14 The Permittee shall record the following inf ormation, with regard to changing the smoke stripper (G2SS) filter media, controlling emissions from the FG-2 Cooling Section (FG26): [391-3-1-.02(6)(b)1, 40 CFR 70.6(a)(3)(i)]

a. Each time the filter media is changed, the Permi ttee shall record the time taken for that change and the total down time for changes, du ring periods when the FG-2 Cooling Section (FG26) is in operation, for each ca lendar day.

b. If the filter media is not changed during any 12 -hour shift, the Permittee shall make a record of that in the same log in which filter medi a replacement time is recorded, per paragraph a of this condition, and provide an expla nation in the log of why the filter media was not changed. If the filter did not need t o be changed because the FG-2 manufacturing line was not in operation, the Permit tee shall note that in the log.

6.2.15 The Permittee shall keep monthly records of organic HAP content data, volatile matter and coating solids data, material usage, organic HAP us age, volatile matter usage, and coating solids usage in the 40 CFR 63 Subpart JJJJ applicab le paper and web coating operations (FG18 and FG28). These records shall be used to dem onstrate compliance with 40 CFR 63 Subpart JJJJ and Condition 4.2.15 of this permit on a monthly basis following the procedure in Condition 6.2.16. These records shall be kept available for inspection by or submittal to the Division for five years from the d ate of record. [Subpart JJJJ - 40 CFR 63.3410(a)(1)(iii), (iv), (v i)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 40 of 59 6.2.16 The Permittee shall calculate the total mont hly organic HAP applied in the web coating operations (FG18 and FG28) using the following equa tion: [Subpart JJJJ - 40 CFR 63.3370(a)(3)]



# ∑ ∑

= = − + = p

i q

j vret

ij hij i hi m M

M C M C H

1 1 where:

H
m = Total monthly organic HAP applied, lb p = Number of different coating materials applied i n a month
C hi = Organic HAP content of coating material, i, as pu rchased, expressed as a weight fraction, lb/lb

M i = Weight of as-purchased coating material, i, appli ed in a month, lb q= Number of different materials added to the coati ng material
C hij = Organic HAP content of material, j, added to as p urchased coating material, i, expressed as a weight fraction, lb/lb

M ij = Weight of material, j, added to as-purchased coat ing material, i, in a month, lb

M vret =Weight of volatile matter retained in the coated w eb after curing or drying, or otherwise not emitted to the atmosphere, lb. The va lue of this term will be zero in all cases except where you choose to take into account the volatile matter retained in the coated web or otherwise not emitted to the atmosphe re for the compliance demonstration procedures in §63.3370.

The Permittee shall also calculate the monthly allo wable organic HAP emissions using the following equation:



## ( )      

+

− +      

= 

# ∑

∑ ∑

= = = q

j Lj i p

i i si i p

i i a M G M C G M H

1 1 1 1

04.0 20.0

where:

H
a = Monthly allowable organic HAP emissions, lb p = Number of different coating materials applied i n a month

M i = Weight of as-purchased coating material, i, appl ied in a month, lb
G i = Weight fraction of each coating material, i, whic h was applied at 20 weight percent or greater coating solids content, on as applied basis , lb/lb
C si = Coating solids content of coating material, i, ex pressed as a weight fraction, lb/lb q= Number of different materials added to the coati ng material

M Lj = Weight of non-coating solid-containing material, j, added to coating-solids containing coating material which were applied at less than 20 weight percent coating solids content, on as-applied basis, in a month, lb.

The Permittee has demonstrated compliance if the to tal monthly HAP applied, H
m , is less than the calculated equivalent allowable organic HA P, H
a .

6.2.17 The Permittee shall notify the Division in w riting within seven (7) days of the installation
of a water flow meter on the inlet of the FG14 and FG34 dropout boxes. [391-3-1-.02(6)(b)1]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 41 of 59 PART 7.0 OTHER SPECIFIC REQUIREMENTS

7.1 Operational Flexibility

7.1.1 The Permittee may make Section 502(b)(10) cha nges as defined in 40 CFR 70.2 without requiring a Permit revision, if the changes are not modifications under any provisions of Title I of the Federal Act and the changes do not e xceed the emissions allowable under the Permit (whether expressed therein as a rate of emis sions or in terms of total emissions). For each such change, the Permittee shall provide t he Division and the EPA with written notification as required below in advance of the pr oposed changes and shall obtain any Permits required under Rules 391-3-1-.03(1) and (2) . The Permittee and the Division shall attach each such notice to their copy of this Permi t. [391-3-1-.03(10)(b)5 and 40 CFR 70.4(b)(12)(i)]

a. For each such change, the Permittee’s written no tification and application for a
construction Permit shall be submitted well in adva nce of any critical date (typically at least 3 months in advance of any commencement of construction, Permit issuance date, etc.) involved in the change, but no less tha n seven (7) days in advance of such change and shall include a brief description of the change within the Permitted facility, the date on which the change is proposed to occur, any change in emissions, and any Permit term or condition that is no longer applicable as a result of the change.

b. The Permit shield described in Condition 8.16.1 shall not apply to any change made pursuant to this condition.

7.2 Off-Permit Changes

7.2.1 The Permittee may make changes that are not a ddressed or prohibited by this Permit, other than those described in Condition 7.2.2 below, with out a Permit revision, provided the following requirements are met: [391-3-1-.03(10)(b)6 and 40 CFR 70.4(b)(14)]

a. Each such change shall meet all applicable requi rements and shall not violate any existing Permit term or condition.

b. The Permittee must provide contemporaneous writt en notice to the Division and to the EPA of each such change, except for changes tha t qualify as insignificant under Rule 391-3-1-.03(10)(g). Such written notice shall describe each such change, including the date, any change in emissions, pollut ants emitted, and any applicable requirement that would apply as a result of the cha nge.

c. The change shall not qualify for the Permit shie ld in Condition 8.16.1.

d. The Permittee shall keep a record describing cha nges made at the source that result in emissions of a regulated air pollutant subject to a n applicable requirement, but not otherwise regulated under the Permit, and the emiss ions resulting from those changes.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 42 of 59 7.2.2 The Permittee shall not make, without a Permi t revision, any changes that are not addressed or prohibited by this Permit, if such changes are s ubject to any requirements under Title IV of the Federal Act or are modifications under any p rovision of Title I of the Federal Act. [Rule 391-3-1-.03(10)(b)7 and 40 CFR 70.4(b)(15)]

7.3 Alternative Requirements [White Paper #2]

Not Applicable.

7.4 Insignificant Activities (see Attachment B for the list of Insignificant Act ivities in existence at the facility at the time of permit issuance)

7.5 Temporary Sources [391-3-1-.03(10)(d)5 and 40 CFR 70.6(e)]

Not Applicable.

7.6 Short-term Activities (see Form D5 “Short Term Activities” of the Permit application and White Paper #1)

Not Applicable.

7.7 Compliance Schedule/Progress Reports [391-3-1-.03(10)(d)3 and 40 CFR 70.6(c)(4)]

None applicable.

7.8 Emissions Trading [391-3-1-.03(10)(d)1(ii) and 40 CFR 70.6(a)(10)]

Not Applicable.

7.9 Acid Rain Requirements

Not Applicable.

7.10 Prevention of Accidental Releases (Section 112 (r) of the 1990 CAAA) [391-3-1-.02(10)]

7.10.1 When and if the requirements of 40 CFR Part 68 become applicable, the Permittee shall comply with all applicable requirements of 40 CFR P art 68, including the following.

a. The Permittee shall submit a Risk Management Pla n (RMP) as provided in 40 CFR 68.150 through 68.185. The RMP shall include a reg istration that reflects all covered

processes.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 43 of 59 b. For processes eligible for Program 1, as provide d in 40 CFR 68.10, the Permittee shall comply with 7.10.1.a. and the following addit ional requirements:

i. Analyze the worst-case release scenario for the process(es), as provided in 40 CFR 68.25; document that the nearest public recepto r is beyond the distance to a toxic or flammable endpoint defined in 40 CFR 68. 22(a); and submit in the RMP the worst-case release scenario as provided in 40 CFR 68.165. ii. Complete the five-year accident history for the process as provided in 40 CFR 68.42 and submit in the RMP as provided in 40 CFR 6 8.168 iii. Ensure that response actions have been coordin ated with local emergency planning and response agencies iv. Include a certification in the RMP as specified in 40 CFR 68.12(b)(4)

c. For processes subject to Program 2, as provided in 40 CFR 68.10, the Permittee shall comply with 7.10.1.a., 7.10.1.b. and the following additional requirements:

i. Develop and implement a management system as pro vided in 40 CFR 68.15 ii. Conduct a hazard assessment as provided in 40 C FR 68.20 through 68.42 iii. Implement the Program 2 prevention steps provi ded in 40 CFR 68.48 through 68.60 or implement the Program 3 prevention steps p rovided in 40 CFR 68.65 through 68.87 iv. Develop and implement an emergency response pro gram as provided in 40 CFR 68.90 through 68.95 v. Submit as part of the RMP the data on prevention program elements for Program 2 processes as provided in 40 CFR 68.170

d. For processes subject to Program 3, as provided in 40 CFR 68.10, the Permittee shall comply with 7.10.1.a., 7.10.1.b. and the following additional requirements:

i. Develop and implement a management system as pro vided in 40 CFR 68.15 ii. Conduct a hazard assessment as provided in 40 C FR 68.20 through 68.42 iii. Implement the prevention requirements of 40 CF R 68.65 through 68.87 iv. Develop and implement an emergency response pro gram as provided in 40 CFR 68.90 through 68.95 v. Submit as part of the RMP the data on prevention program elements for Program 3 as provided in 40 CFR 68.175

e. All reports and notification required by 40 CFR Part 68 must be submitted electronically (e.g., diskette or compact disc) to:

MAIL

Attention: RMP*Submit Risk Management Program (RMP) Reporting Center

P.O. Box 1515 Lanham-Seabrook, MD 20703-1515Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 44 of 59 COURIER & FEDEX

Risk Management Program (RMP) Reporting Center

C/O CSC
Suite 300 8400 Corporate Drive New Carrollton, MD 20785

Compliance with all requirements of this condition, including the registration and submission of the RMP, shall be included as part of the compliance certification submitted
in accordance with Condition 8.14.1.

7.11 Stratospheric Ozone Protection Requirements (T itle VI of the CAAA of 1990)

7.11.1 If the Permittee performs any of the activit ies described below or as otherwise defined in 40 CFR Part 82, the Permittee shall comply with the st andards for recycling and emissions reduction pursuant to 40 CFR Part 82, Subpart F, ex cept as provided for motor vehicle air conditioners (MVACs) in Subpart B:

a. Persons opening appliances for maintenance, serv ice, repair, or disposal must comply with the required practices pursuant to 40 CFR 82.1 56.

b. Equipment used during the maintenance, service, repair, or disposal of appliance must comply with the standards for recycling and recover y equipment pursuant to 40 CFR
82.158.

c. Persons performing maintenance, service, repair, or disposal of appliances must be certified by an approved technician certification p rogram pursuant to 40 CFR 82.161.

d. Persons disposing of small appliances, MVACs, an d MVAC-like appliances must comply with record keeping requirements pursuant to 40 CFR 82.166. [Note: “MVAC-like appliance” is defined in 40 CFR 8 2.152.]

e. Persons owning commercial or industrial process refrigeration equipment must comply with the leak repair requirements pursuant t o 40 CFR 82.156.

f. Owners/operators of appliances normally containi ng 50 or more pounds of refrigerant must keep records of refrigerant purchased and adde d to such appliances pursuant to
40 CFR 82.166.

7.11.2 If the Permittee performs a service on motor (fleet) vehicles and if this service involves an ozone-depleting substance (refrigerant) in the MVAC , the Permittee is subject to all the applicable requirements as specified in 40 CFR Part 82, Subpart B, Servicing of Motor
Vehicle Air Conditioners.

The term “motor vehicle” as used in Subpart B does not include a vehicle in which final assembly of the vehicle has not been completed. Th e term “MVAC” as used in Subpart BTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 45 of 59 does not include air-tight sealed refrigeration sys tems used for refrigerated cargo, or air conditioning systems on passenger buses using HCFC- 22 refrigerant.

7.12 Revocation of Existing Permits and Amendments

The following Air Quality Permits, Amendments, and 502(b)10 are subsumed by this permit and are hereby revoked:

Air Quality Permit and Amendment Number(s) Dates of Original Permit or Amendment Issuance 3296-121-0021-V-01-0 July 31, 2003 3296-121-0021-V-01-1 December 14, 2005 3296-121-0021-V-01-2 February 7, 2007

7.13 Pollution Prevention

None applicable.

7.14 Specific Conditions

None applicable.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 46 of 59 PART 8.0 GENERAL PROVISIONS

8.1 Terms and References

8.1.1 Terms not otherwise defined in the Permit sha ll have the meaning assigned to such terms in the referenced regulation.

8.1.2 Where more than one condition in this Permit applies to an emission unit and/or the entire facility, each condition shall apply and the most s tringent condition shall take precedence. [391-3-1-.02(2)(a)2]

8.2 EPA Authorities

8.2.1 Except as identified as “State-only enforceab le” requirements in this Permit, all terms and conditions contained herein shall be enforceable by the EPA and citizens under the Clean Air Act, as amended, 42 U.S.C. 7401, et seq. [40 CFR 70.6(b)(1)]

8.2.2 Nothing in this Permit shall alter or affect the authority of the EPA to obtain information pursuant to 42 U.S.C. 7414, “Inspections, Monitorin g, and Entry.” [40 CFR 70.6(f)(3)(iv)]

8.2.3 Nothing in this Permit shall alter or affect the authority of the EPA to impose emergency orders pursuant to 42 U.S.C. 7603, “Emergency Power s.” [40 CFR 70.6(f)(3)(i)]

8.3 Duty to Comply

8.3.1 The Permittee shall comply with all condition s of this operating Permit. Any Permit noncompliance constitutes a violation of the Federa l Clean Air Act and the Georgia Air Quality Act and/or State rules and is grounds for e nforcement action; for Permit termination, revocation and reissuance, or modifica tion; or for denial of a Permit renewal application. Any noncompliance with a Permit condi tion specifically designated as enforceable only by the State constitutes a violati on of the Georgia Air Quality Act and/or State rules only and is grounds for enforcement act ion; for Permit termination, revocation and reissuance, or modification; or for denial of a Permit renewal application. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(6)(i)]

8.3.2 The Permittee shall not use as a defense in a n enforcement action the contention that it would have been necessary to halt or reduce the Per mitted activity in order to maintain compliance with the conditions of this Permit. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(6)(ii)]

8.3.3 Nothing in this Permit shall alter or affect the liability of the Permittee for any violation of applicable requirements prior to or at the time of Permit issuance. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(f)(3)(ii)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 47 of 59 8.3.4 Issuance of this Permit does not relieve the Permittee from the responsibility of obtaining any other permits, licenses, or approvals required by the Director or any other federal, state, or local agency. [391-3-1-.03(10)(e)1(iv) and 40 CFR 70.7(a)(6)]

8.4 Fee Assessment and Payment

8.4.1 The Permittee shall calculate and pay an annu al Permit fee to the Division. The amount of fee shall be determined each year in accordance wit h the “Procedures for Calculating Air
Permit Fees.” [391-3-1-.03(9)]

8.5 Permit Renewal and Expiration

8.5.1 This Permit shall remain in effect for five ( 5) years from the effective date. The Permit shall become null and void after the expiration dat e unless a timely and complete renewal application has been submitted to the Division at l east six (6) months, but no more than eighteen (18) months prior to the expiration date o f the Permit. [391-3-1-.03(10)(d)1(i), (e)2, and (e)3(ii) and 40 CFR 70.5(a)(1)(iii)]

8.5.2 Permits being renewed are subject to the same procedural requirements, including those for public participation and affected State and EPA rev iew, that apply to initial Permit
issuance. [391-3-1-.03(10)(e)3(i)]

8.5.3 Notwithstanding the provisions in 8.5.1 above , if the Division has received a timely and complete application for renewal, deemed it adminis tratively complete, and failed to reissue the Permit for reasons other than cause, authorizat ion to operate shall continue beyond the expiration date to the point of Permit modification , reissuance, or revocation. [391-3-1-.03(10)(e)3(iii)]

8.6 Transfer of Ownership or Operation

8.6.1 This Permit is not transferable by the Permit tee. Future owners and operators shall obtain a new Permit from the Director. The new Permit may b e processed as an administrative amendment if no other change in this Permit is nece ssary, and provided that a written agreement containing a specific date for transfer o f Permit responsibility coverage and liability between the current and new Permittee has been submitted to the Division at least thirty (30) days in advance of the transfer. [391-3-1-.03(4)]

8.7 Property Rights

8.7.1 This Permit shall not convey property rights of any sort, or any exclusive privileges. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(6)(iv)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 48 of 59 8.8 Submissions

8.8.1 Reports, test data, monitoring data, notifica tions, annual certifications, and requests for
revision and renewal shall be submitted to:

Georgia Department of Natural Resources
Environmental Protection Division
Air Protection Branch Atlanta Tradeport, Suite 120 4244 International Parkway Atlanta, Georgia 30354-3908

8.8.2 Any records, compliance certifications, and m onitoring data required by the provisions in
this Permit to be submitted to the EPA shall be sen t to:

Air and EPCRA Enforcement Branch – U. S. EPA Region 4

Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Atlanta, Georgia 30303-3104

8.8.3 Any application form, report, or compliance c ertification submitted pursuant to this Permit shall contain a certification by a responsible offi cial of its truth, accuracy, and completeness. This certification shall state that, based on information and belief formed after reasonable inquiry, the statements and inform ation in the document are true, accurate, and complete. [391-3-1-.03(10)(c)2, 40 CFR 70.5(d) and 40 CFR 70. 6(c)(1)]

8.8.4 Unless otherwise specified, all submissions u nder this permit shall be submitted to the Division only.

8.9 Duty to Provide Information

8.9.1 The Permittee, upon becoming aware that any r elevant facts were omitted or incorrect information was submitted in the Permit application , shall promptly submit such supplementary facts or corrected information to the Division. [391-3-1-.03(10)(c)5]

8.9.2 The Permittee shall furnish to the Division, in writing, information that the Division may request to determine whether cause exists for modif ying, revoking and reissuing, or terminating the Permit, or to determine compliance with the Permit. Upon request, the Permittee shall also furnish to the Division copies of records that the Permittee is required to keep by this Permit or, for information claimed to be confidential, the Permittee may furnish such records directly to the EPA, if necess ary, along with a claim of confidentiality. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(6)(v)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 49 of 59 8.10 Modifications

8.10.1 Prior to any source commencing a modificatio n as defined in 391-3-1-.01(pp) that may result in air pollution and not exempted by 391-3-1 -.03(6), the Permittee shall submit a Permit application to the Division. The applicatio n shall be submitted sufficiently in advance of any critical date involved to allow adeq uate time for review, discussion, or revision of plans, if necessary. Such application shall include, but not be limited to, information describing the precise nature of the ch ange, modifications to any emission control system, production capacity of the plant be fore and after the change, and the anticipated completion date of the change. The app lication shall be in the form of a Georgia air quality Permit application to construct or modify (otherwise known as a SIP application) and shall be submitted on forms suppli ed by the Division, unless otherwise notified by the Division. [391-3-1-.03(1) through (8)]

8.11 Permit Revision, Revocation, Reopening and Ter mination

8.11.1 This Permit may be revised, revoked, reopene d and reissued, or terminated for cause by the Director. The Permit will be reopened for cause an d revised accordingly under the following circumstances: [391-3-1-.03(10)(d)1(i)]

a. If additional applicable requirements become app licable to the source and the remaining Permit term is one (1) year or longer. I n this case, the reopening shall be completed no later than eighteen (18) months after promulgation of the applicable requirement. A reopening shall not be required if compliance with the applicable requirement is not required until after the date on which the Permit is due to expire; [391-3-1-.03(10)(e)6(i)(I)]

b. If any additional applicable requirements of the Acid Rain Program become applicable to the source; [391-3-1-.03(10)(e)6(i)(II)] (Acid Rain sources onl y)

c. The Director determines that the Permit contains a material mistake or inaccurate statements were made in establishing the emissions standards or other terms or conditions of the Permit; or [391-3-1-.03(10)(e)6(i)(III) and 40 CFR 70.7(f)(1)( iii)]

d. The Director determines that the Permit must be revised or revoked to assure compliance with the applicable requirements. [391-3-1-.03(10)(e)6(i)(IV) and 40 CFR 70.7(f)(1)(i v)]

8.11.2 Proceedings to reopen and reissue a Permit s hall follow the same procedures as applicable to initial Permit issuance and shall affect only th ose parts of the Permit for which cause to reopen exists. Reopenings shall be made as expedit iously as practicable. [391-3-1-.03(10)(e)6(ii)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 50 of 59 8.11.3 Reopenings shall not be initiated before a n otice of intent to reopen is provided to the source by the Director at least thirty (30) days in advance of the date the Permit is to be reopened, except that the Director may provide a sh orter time period in the case of an

emergency. [391-3-1-.03(10)(e)6(iii)]

8.11.4 All Permit conditions remain in effect until such time as the Director takes final action. The filing of a request by the Permittee for any Pe rmit revision, revocation, reissuance, or termination, or of a notification of planned change s or anticipated noncompliance, shall not stay any Permit condition. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(6)(iii)]

8.11.5 A Permit revision shall not be required for changes that are explicitly authorized by the
conditions of this Permit.

8.11.6 A Permit revision shall not be required for changes that are part of an approved economic incentive, marketable Permit, emission trading, or other similar program or process for change which is specifically provided for in this P ermit. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(8)]

8.12 Severability

8.12.1 Any condition or portion of this Permit whic h is challenged, becomes suspended or is ruled invalid as a result of any legal or other action sh all not invalidate any other portion or
condition of this Permit. [391-3-1-.03(10)(d)1(i) and 40 CFR 70.6(a)(5)]

8.13 Excess Emissions Due to an Emergency

8.13.1 An “emergency” means any situation arising f rom sudden and reasonably unforeseeable events beyond the control of the source, including acts of God, which situation requires immediate corrective action to restore normal opera tion, and that causes the source to exceed a technology-based emission limitation under the Permit, due to unavoidable increases in emissions attributable to the emergenc y. An emergency shall not include noncompliance to the extent caused by improperly de signed equipment, lack of preventative maintenance, careless or improper oper ation, or operator error. [391-3-1-.03(10)(d)7 and 40 CFR 70.6(g)(1)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 51 of 59 8.13.2 An emergency shall constitute an affirmative defense to an action brought for noncompliance with the technology-based emission li mitations if the Permittee demonstrates, through properly signed contemporaneo us operating logs or other relevant evidence, that: [391-3-1-.03(10)(d)7 and 40 CFR 70.6(g)(2) and (3)]

a. An emergency occurred and the Permittee can iden tify the cause(s) of the emergency;

b. The Permitted facility was at the time of the em ergency being properly operated;

c. During the period of the emergency, the Permitte e took all reasonable steps to
minimize levels of emissions that exceeded the emis sions standards, or other requirements in the Permit; and

d. The Permittee promptly notified the Division and submitted written notice of the emergency to the Division within two (2) working da ys of the time when emission limitations were exceeded due to the emergency. Th is notice must contain a description of the emergency, any steps taken to mi tigate emissions, and corrective
actions taken.

8.13.3 In an enforcement proceeding, the Permittee seeking to establish the occurrence of an emergency shall have the burden of proof. [391-3-1-.03(10)(d)7 and 40 CFR 70.6(g)(4)]

8.13.4 The emergency conditions listed above are in addition to any emergency or upset provisions contained in any applicable requirement. [391-3-1-.03(10)(d)7 and 40 CFR 70.6(g)(5)]

8.14 Compliance Requirements

8.14.1 Compliance Certification

The Permittee shall provide written certification t o the Division and to the EPA, at least annually, of compliance with the conditions of this Permit. The annual written certification shall be postmarked no later than January 30 of eac h year and shall be submitted to the
Division and to the EPA. The certification shall i nclude, but not be limited to, the following elements: [391-3-1-.03(10)(d)3 and 40 CFR 70.6(c)(5)]

a. The identification of each term or condition of the Permit that is the basis of the certification;

b. The status of compliance with the terms and cond itions of the permit for the period covered by the certification, including whether com pliance during the period was continuous or intermittent, based on the method or means designated in paragraph c below. The certification shall identify each devia tion and take it into account in the compliance certification. The certification shall also identify as possible exceptionsTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 52 of 59 to compliance any periods during which compliance i s required and in which an
excursion or exceedance as defined under 40 CFR Par t 64 occurred;

c. The identification of the method(s) or other mea ns used by the owner or operator for determining the compliance status with each term an d condition during the certification period;

d. Any other information that must be included to c omply with section 113(c)(2) of the Act, which prohibits knowingly making a false certi fication or omitting material information; and

e. Any additional requirements specified by the Div ision.

8.14.2 Inspection and Entry

a. Upon presentation of credentials and other docum ents as may be required by law, the Permittee shall allow authorized representatives of the Division to perform the following: [391-3-1-.03(10)(d)3 and 40 CFR 70.6(c)(2)]

i. Enter upon the Permittee's premises where a Part 70 source is located or an emissions-related activity is conducted, or where r ecords must be kept under the conditions of this Permit; ii. Have access to and copy, at reasonable times, a ny records that must be kept under the conditions of this Permit; iii. Inspect at reasonable times any facilities, eq uipment (including monitoring and air pollution control equipment), practices, or ope rations regulated or required under this Permit; and iv. Sample or monitor any substances or parameters at any location during operating hours for the purpose of assuring Permit compliance or compliance with applicable requirements as authorized by the G eorgia Air Quality Act.

b. No person shall obstruct, hamper, or interfere w ith any such authorized representative while in the process of carrying out his official d uties. Refusal of entry or access may constitute grounds for Permit revocation and assess ment of civil penalties. [391-3-1-.07 and 40 CFR 70.11(a)(3)(i)]

8.14.3 Schedule of Compliance

a. For applicable requirements with which the Permi ttee is in compliance, the Permittee shall continue to comply with those requirements. [391-3-1-.03(10)(c)2 and 40 CFR 70.5(c)(8)(iii)(A)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 53 of 59 b. For applicable requirements that become effectiv e during the Permit term, the Permittee shall meet such requirements on a timely basis unless a more detailed schedule is expressly required by the applicable re quirement. [391-3-1-.03(10)(c)2 and 40 CFR 70.5(c)(8)(iii)(B)]

c. Any schedule of compliance for applicable requir ements with which the source is not in compliance at the time of Permit issuance shall be supplemental to, and shall not sanction noncompliance with, the applicable require ments on which it is based. [391-3-1-.03(10)(c)2 and 40 CFR 70.5(c)(8)(iii)(C)]

8.14.4 Excess Emissions

a. Excess emissions resulting from startup, shutdow n, or malfunction of any source which occur though ordinary diligence is employed s hall be allowed provided that: [391-3-1-.02(2)(a)7(i)]

i. The best operational practices to minimize emiss ions are adhered to;

ii. All associated air pollution control equipment is operated in a manner consistent with good air pollution control practice for minimizing emissions;
and

iii. The duration of excess emissions is minimized.

b. Excess emissions which are caused entirely or in part by poor maintenance, poor operation, or any other equipment or process failur e which may reasonably be prevented during startup, shutdown or malfunction a re prohibited and are violations of Chapter 391-3-1 of the Georgia Rules for Air Qua lity Control. [391-3-1-.02(2)(a)7(ii)]

c. The provisions of this condition and Georgia Rul e 391-3-1-.02(2)(a)7 shall apply only to those sources which are not subject to any requi rement under Georgia Rule 391-3- 1-.02(8) – New Source Performance Standards or any requirement of 40 CFR, Part 60, as amended concerning New Source Performance St andards. [391-3-1-.02(2)(a)7(iii)]

8.15 Circumvention

8.15.1 State Only Enforceable Condition. The Permittee shall not build, erect, install, or u se any article, machine, equipment or process the use of which conceals an emission which would otherwise constitute a violation of an applicable emission standard. Such concealme nt includes, but is not limited to, the use of gaseous diluents to achieve compliance with an opacity standard or with a standard which is based on the concentration of the pollutan ts in the gases discharged into the atmosphere. [391-3-1-.03(2)(c)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 54 of 59 8.16 Permit Shield

8.16.1 Compliance with the terms of this Permit sha ll be deemed compliance with all applicable requirements as of the date of Permit issuance prov ided that all applicable requirements are included and specifically identified in the Permit. [391-3-1-.03(10)(d)6]

8.16.2 Any Permit condition identified as “State on ly enforceable” does not have a Permit shield.

8.17 Operational Practices

8.17.1 At all times, including periods of startup, shutdown, and malfunction, the Permittee shall maintain and operate the source, including associat ed air pollution control equipment, in a manner consistent with good air pollution control p ractice for minimizing emissions. Determination of whether acceptable operating and m aintenance procedures are being used will be based on any information available to the D ivision that may include, but is not limited to, monitoring results, observations of the opacity or other characteristics of emissions, review of operating and maintenance proc edures or records, and inspection or
surveillance of the source. [391-3-1-.02(2)(a)10]

State Only Enforceable Condition. 8.17.2 No person owning, leasing, or controlling, t he operation of any air contaminant sources shall willfully, negligently or through failure to provide necessary equipment or facilities or to take necessary precautions, cause, permit, or al low the emission from said air contamination source or sources, of such quantities of air contaminants as will cause, or tend to cause, by themselves, or in conjunction wit h other air contaminants, a condition of air pollution in quantities or characteristics or o f a duration which is injurious or which unreasonably interferes with the enjoyment of life or use of property in such area of the State as is affected thereby. Complying with Georg ia’s Rules for Air Quality Control Chapter 391-3-1 and Conditions in this Permit, shal l in no way exempt a person from this provision. [ 391-3-1-.02(2)(a)1]

8.18 Visible Emissions

8.18.1 Except as may be provided in other provision s of this Permit, the Permittee shall not cause, let, suffer, permit or allow emissions from any air contaminant source the opacity of which is equal to or greater than forty (40) percent. [391-3-1-.02(2)(b)1]

8.19 Fuel-burning Equipment

8.19.1 The Permittee shall not cause, let, suffer, permit, or allow the emission of fly ash and/or other particulate matter from any fuel-burning equi pment with rated heat input capacity of less than 10 million Btu per hour, in operation or under construction on or before January 1, 1972 in amounts equal to or exceeding 0.7 pounds pe r million BTU heat input. [391-3-1-.02(2)(d)]Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 55 of 59 8.19.2 The Permittee shall not cause, let, suffer, permit, or allow the emission of fly ash and/or other particulate matter from any fuel-burning equi pment with rated heat input capacity of less than 10 million Btu per hour, constructed afte r January 1, 1972 in amounts equal to or exceeding 0.5 pounds per million BTU heat input. [391-3-1-.02(2)(d)]

8.19.3 The Permittee shall not cause, let, suffer, permit, or allow the emission from any fuelburning equipment constructed or extensively modifi ed after January 1, 1972, visible emissions the opacity of which is equal to or great er than twenty (20) percent except for one six minute period per hour of not more than twe nty-seven (27) percent opacity. [391-3-1-.02(2)(d)]

8.20 Sulfur Dioxide

8.20.1 Except as may be specified in other provisio ns of this Permit, the Permittee shall not burn fuel containing more than 2.5 percent sulfur, by we ight, in any fuel burning source that has a heat input capacity below 100 million Btu's per h our. [391-3-1-.02(2)(g)]

8.21 Particulate Emissions

8.21.1 Except as may be specified in other provisio ns of this Permit, the Permittee shall not cause, let, permit, suffer, or allow the rate of emission from any source, particulate matter in total quantities equal to or exceeding the allowable rate s shown below. Equipment in operation, or under construction contract, on or before July 2 , 1968, shall be considered existing equipment. All other equipment put in operation or extensively altered after said date is to be considered new equipment. [391-3-1-.02(2)(e)]

a. The following equations shall be used to calcula te the allowable rates of emission from new equipment:

E = 4.1P 0.67 ; for process input weight rate up to and including 30 tons per hour.
E = 55P 0.11 - 40; for process input weight rate above 30 tons per hour.

b. The following equation shall be used to calculat e the allowable rates of emission from existing equipment:

E = 4.1P 0.67

In the above equations, E = emission rate in pounds per hour, and P = process input weight rate in tons per hour.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 56 of 59 8.22 Fugitive Dust

8.22.1 Except as may be specified in other provisio ns of this Permit, the Permittee shall take all reasonable precautions to prevent dust from any ope ration, process, handling, transportation or storage facility from becoming airborne. Reason able precautions that could be taken to prevent dust from becoming airborne include, but ar e not limited to, the following: [391-3-1-.02(2)(n)]

a. Use, where possible, of water or chemicals for c ontrol of dust in the demolition of existing buildings or structures, construction oper ations, the grading of roads or the clearing of land;

b. Application of asphalt, water, or suitable chemi cals on dirt roads, materials, stockpiles, and other surfaces that can give rise t o airborne dusts;

c. Installation and use of hoods, fans, and fabric filters to enclose and vent the handling of dusty materials. Adequate containment methods c an be employed during sandblasting or other similar operations;

d. Covering, at all times when in motion, open bodi ed trucks transporting materials likely to give rise to airborne dusts; and

e. The prompt removal of earth or other material fr om paved streets onto which earth or other material has been deposited.

8.22.2 The opacity from any fugitive dust source sh all not equal or exceed 20 percent.

8.23 Solvent Metal Cleaning

8.23.1 Except as may be specified in other provisio ns of this Permit, the Permittee shall not cause, suffer, allow, or permit the operation of a cold cl eaner degreaser unless the following requirements for control of emissions of the volati le organic compounds are satisfied: [391-3-1-.02(2)(ff)1]

a. The degreaser shall be equipped with a cover to prevent escape of VOC during periods of non-use,

b. The degreaser shall be equipped with a device to drain cleaned parts before removal from the unit,

c. If the solvent volatility is 0.60 psi or greater measured at 100 oF, or if the solvent is heated above 120 oF, then one of the following cont rol devices must be used:

i. The degreaser shall be equipped with a freeboard that gives a freeboard ratio of 0.7 or greater, or

ii. The degreaser shall be equipped with a water co ver (solvent must be insoluble in and heavier than water), orTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 57 of 59 iii. The degreaser shall be equipped with a system of equivalent control, including but not limited to, a refrigerated chiller or carbo n adsorption system.

d. Any solvent spray utilized by the degreaser must be in the form of a solid, fluid stream (not a fine, atomized or shower type spray) and at a pressure which will not cause excessive splashing, and

e. All waste solvent from the degreaser shall be st ored in covered containers and shall not be disposed of by such a method as to allow exc essive evaporation into the atmosphere.
8.24 Incinerators

8.24.1 Except as specified in the section dealing w ith conical burners, no person shall cause, let, suffer, permit, or allow the emissions of fly ash a nd/or other particulate matter from any incinerator, in amounts equal to or exceeding the f ollowing: [391-3-1-.02(2)(c)1-4]

a. Units with charging rates of 500 pounds per hour or less of combustible waste, including water, shall not emit fly ash and/or part iculate matter in quantities exceeding 1.0 pound per hour.

b. Units with charging rates in excess of 500 pound s per hour of combustible waste, including water, shall not emit fly ash and/or part iculate matter in excess of 0.20 pounds per 100 pounds of charge.

8.24.2 No person shall cause, let, suffer, permit, or allow from any incinerator, visible emissions the opacity of which is equal to or greater than tw enty (20) percent except for one six minute period per hour of not more than twenty-seve n (27) percent opacity.

8.24.3 No person shall cause or allow particles to be emitted from an incinerator which are individually large enough to be visible to the unai ded eye.

8.24.4 No person shall operate an existing incinera tor unless:

a. It is a multiple chamber incinerator;

b. It is equipped with an auxiliary burner in the p rimary chamber for the purpose of creating a pre-ignition temperature of 800 o F; and

c. It has a secondary burner to control smoke and/o r odors and maintain a temperature
of at least 1500 o F in the secondary chamber.

8.25 Volatile Organic Liquid Handling and Storage

8.25.1 The Permittee shall ensure that each storage tank subject to the requirements of Rule 391-3- 1-.02(2)(vv) “Volatile Organic Liquid Handling and Storage” is equipped with submerged fill pipes. For the purposes of this condition and the permit, a submerged fill pipe isTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 58 of 59 defined as any fill pipe with a discharge opening w hich is within six inches of the tank
bottom. [391-3-1-.02(2)(vv)(1)]

8.26 Use of Any Credible Evidence or Information

8.26.1 Notwithstanding any other provisions of any applicable rule or regulation or requirement of this permit, for the purpose of submission of compl iance certifications or establishing whether or not a person has violated or is in viola tion of any emissions limitation or standard, nothing in this permit or any Emission Li mitation or Standard to which it pertains, shall preclude the use, including the exclusive use , of any credible evidence or information,
relevant to whether a source would have been in com pliance with applicable requirements if the appropriate performance or compliance test o r procedure had been performed. [391-3-1-.02(3)(a)]

8.27 Diesel-Fired Internal Combustion Engines

8.27.1 The Permittee shall comply with all applicab le provisions of New Source Performance Standards (NSPS) Federal Rule 40 CFR Part 60 Subpar t A-"General Provisions" and Subpart IIII-“Standards for Stationary Compression Ignition Internal Combustion Engines,” for diesel-fired internal combustion engine(s) manu factured after April 1, 2006 or modified/reconstructed after July 11, 2005. Such r equirements include but are not limited

to: [40 CFR 60.4205(b), 391-3-1-.02(8)(b)77 ]

a. Equip all emergency generator engines with non-r esettable hour meters

b. Use only diesel fuel with a maximum sulfur conte nt of 500 ppm (15 ppm after October 1, 2010) unless otherwise specified by the Division.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Page 59 of 59 Attachments

A. List of Standard Abbreviations and List of Permi t Specific Abbreviations B. Insignificant Activities Checklist, Insignifican t Activities Based on Emission Levels and Generic Emission Groups
C. List of ReferencesTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 1 of 8 ATTACHMENT A

List Of Standard Abbreviations

AIRS Aerometric Information Retrieval System PM Pa rticulate Matter

APCD Air Pollution Control Device PM 10 (PM10) Particulate Matter less than 10 micrometers in

diameter ASTM American Society for Testing and Materials PP M (ppm) Parts per Million BACT Best Available Control Technology PSD Prevent ion of Significant Deterioration BTU British Thermal Unit RACT Reasonably Available Control Technology CAAA Clean Air Act Amendments RMP Risk Management Plan

CEM Continuous Emission Monitor SIC Standard Indus trial Classification CERMS Continuous Emission Rate Monitoring System S IP State Implementation Plan CFR Code of Federal Regulations SO 2 (SO2) Sulfur Dioxide CMS Continuous Monitoring System(s) USC United Sta tes Code

CO Carbon Monoxide VE Visible Emissions COM Continuous Opacity Monitor VOC Volatile Organi c Compound dscf/dscm Dry Standard Cubic Foot / Dry Standard Cu bic

Meter EPA United States Environmental Protection Agency EPCRA Emergency Planning and Community Right to

Know Act gr Grain(s) GPM (gpm) Gallons per minute

H 2 O (H2O) Water

HAP Hazardous Air Pollutant HCFC Hydro-chloro-fluorocarbon MACT Maximum Achievable Control Technology

MMBtu Million British Thermal Units MMBtu/hr Million British Thermal Units per hour

MVAC Motor Vehicle Air Conditioner MW Megawatt

NESHAP National Emission Standards for Hazardous Ai r

Pollutants

NO

x (NOx) Nitrogen Oxides

NSPS New Source Performance Standards OCGA Official Code of Georgia Annotated

List of Permit Specific Abbreviations

OMM Plan Operations, Maintenance, and Monitoring Pl an QIP Quality Improvement Plan LOI Loss On IgnitionTitle V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 2 of 8 ATTACHMENT B

NOTE: Attachment B contains information regarding insign ificant emission units/activities and groups of gen eric emission

units/activities in existence at the facility at th e time of Permit issuance. Future modifications or additions of insignificant emission units/activities and equipment that are pa rt of generic emissions groups may not necessarily cause this attachment to be updated.

INSIGNIFICANT ACTIVITIES CHECKLIST
Category Description of Insignificant Activity/Unit Quantity

Mobile Sources 1. Cleaning and sweeping of streets and paved surfa ces 1

1. Fire fighting and similar safety equipment used to train fire fighters or other emergency personnel. 1

2. Small incinerators that are not subject to any s tandard, limitation or other requirement under Section 111 or 112 (excluding 112(r)) of the Federa l Act and are not considered a "designated facility" as specified in 40 CFR 60.32e of the Fede ral emissions guidelines for Hospital/Medical/Infectious Waste Incinerators, tha t are operating as follows:

i) Less than 8 million BTU/hr heat input, firing ty pes 0, 1, 2, and/or 3 waste.

ii) Less than 8 million BTU/hr heat input with no m ore than 10% pathological (type 4) waste by weight combined with types 0, 1, 2, and/or 3 was te. iii) Less than 4 million BTU/hr heat input firing t ype 4 waste. (Refer to 391-3-1-.03(10)(g)2.(ii) for descriptions of waste types) 3. Open burning in compliance with Georgia Rule 391 -3-1-.02 (5). 1

4. Stationary engines burning:

i) Natural gas, LPG, gasoline, dual fuel, or diesel fuel which are used exclusively as emergency generators shall not exceed 500 hours per year or 200 hours per year if subject to Georgia Rule 391-3-1-.02(2)(mmm).7 ii) Natural gas, LPG, and/or diesel fueled generato rs used for emergency, peaking, and/or standby power generation, where the combined peakin g and standby power generation do not exceed 200 hours per year. iii) Natural gas, LPG, and/or diesel fuel used for other purposes, provided that the output of each engine does not exceed 400 horsepower and that no individual engine operates for more than 2,000 hours per year. 7 Combustion Equipment

iv) Gasoline used for other purposes, provided that the output of each engine does not exceed 100 horsepower and that no individual engine operat es for more than 500 hours per year. Trade Operations 1. Brazing, soldering, and welding equipment, and c utting torches related to manufacturing and
construction activities whose emissions of hazardou s air pollutants (HAPs) fall below 1,000 pounds per year. 1

Maintenance, Cleaning, and Housekeeping 1. Blast-cleaning equipment using a suspension of a brasive in water and any exhaust system (or collector) serving them exclusively.

2. Portable blast-cleaning equipment. 2
3. Non-Perchloroethylene Dry-cleaning equipment wi th a capacity of 100 pounds per hour or less
of clothes. 4. Cold cleaners having an air/vapor interface of not more than 10 square feet and that do not use a halogenated solvent. 6

5. Non-routine clean out of tanks and equipment fo r the purposes of worker entry or in preparation for maintenance or decommissioning. 12

6. Devices used exclusively for cleaning metal par ts or surfaces by burning off residual amounts of paint, varnish, or other foreign material, provided that such devices are equipped with
afterburners. 7. Cleaning operations: Alkaline phosphate cleaner s and associated cleaners and burners.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 3 of 8 INSIGNIFICANT ACTIVITIES CHECKLIST

Category Description of Insignificant Activity/Unit Quantity

Laboratories and Testing 1. Laboratory fume hoods and vents associated with bench-scale laboratory equipment used for physical or chemical analysis. 4

2. Research and development facilities, quality co ntrol testing facilities and/or small pilot project s, where combined daily emissions from all operations are not individually major or are support facilities not making significant contributions to the product of a collocated major manufacturing facility. 7

1. Sanitary waste water collection and treatment sy stems, except incineration equipment or equipment subject to any standard, limitation or ot her requirement under Section 111 or 112 (excluding 112(r)) of the Federal Act. 2. On site soil or groundwater decontamination unit s that are not subject to any standard, limitation or other requirement under Section 111 or 112 (excl uding 112(r)) of the Federal Act. 3. Bioremediation operations units that are not sub ject to any standard, limitation or other requirement under Section 111 or 112 (excluding 112 (r)) of the Federal Act. Pollution Control

4. Landfills that are not subject to any standard, limitation or other requirement under Section 111 or 112 (excluding 112(r)) of the Federal Act. 1. Concrete block and brick plants, concrete produc ts plants, and ready mix concrete plants producing less than 125,000 tons per year. 2. Any of the following processes or process equipm ent which are electrically heated or which fire natural gas, LPG or distillate fuel oil at a maximu m total heat input rate of not more than 5 million BTU's per hour: i) Furnaces for heat treating glass or metals, the use of which do not involve molten materials or oil-coated parts. 1

ii) Porcelain enameling furnaces or porcelain ename ling drying ovens.

iii) Kilns for firing ceramic ware.

iv) Crucible furnaces, pot furnaces, or induction m elting and holding furnaces with a capacity of 1,000 pounds or less each, in which sweating or distilling is not conducted and in which fluxing is not conducted utilizing free chlorine, c hloride or fluoride derivatives, or ammonium compounds. v) Bakery ovens and confection cookers.

3. Carving, cutting, routing, turning, drilling, ma chining, sawing, surface grinding, sanding, planing, buffing, shot blasting, shot peening, or p olishing; ceramics, glass, leather, metals, plastics, rubber, concrete, paper stock or wood, al so including roll grinding and ground wood pulping stone sharpening, provided that: i) Activity is performed indoors; & ii) No significant fugitive particulate emissions e nter the environment; & iii) No visible emissions enter the outdoor atmosph ere. 2

4. Photographic process equipment by which an image is reproduced upon material sensitized to radiant energy (e.g., blueprint activity, photograp hic developing and microfiche). 5. Grain, food, or mineral extrusion processes

6. Equipment used exclusively for sintering of glas s or metals, but not including equipment used for sintering metal-bearing ores, metal scale, clay , fly ash, or metal compounds. 7. Equipment for the mining and screening of uncrus hed native sand and gravel.

8. Ozonization process or process equipment.

9. Electrostatic powder coating booths with an appr opriately designed and operated particulate control system. 10. Activities involving the application of hot mel t adhesives where VOC emissions are less than 5 tons per year and HAP emissions are less than 1,000 pounds per year. 2

11. Equipment used exclusively for the mixing and b lending water-based adhesives and coatings at ambient temperatures. 12. Equipment used for compression, molding and inj ection of plastics where VOC emissions are less than 5 tons per year and HAP emissions are les s than 1,000 pounds per year. Industrial Operations

13. Ultraviolet curing processes where VOC emission s are less than 5 tons per year and HAP emissions are less than 1,000 pounds per year.Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 4 of 8 INSIGNIFICANT ACTIVITIES CHECKLIST
Category Description of Insignificant Activity/Unit Quantity

1. All petroleum liquid storage tanks storing a liq uid with a true vapor pressure of equal to or less than 0.50 psia as stored. 2. All petroleum liquid storage tanks with a capaci ty of less than 40,000 gallons storing a liquid with a true vapor pressure of equal to or less than 2.0 psia as stored that are not subject to any standard, limitation or other requirement under Sec tion 111 or 112 (excluding 112(r)) of the
Federal Act. 3. All petroleum liquid storage tanks with a capaci ty of less than 10,000 gallons storing a petroleum liquid. 9

4. All pressurized vessels designed to operate in e xcess of 30 psig storing petroleum fuels that are not subject to any standard, limitation or other re quirement under Section 111 or 112 (excluding 112(r)) of the Federal Act. 5

5. Gasoline storage and handling equipment at loadi ng facilities handling less than 20,000 gallons per day or at vehicle dispensing facilities that ar e not subject to any standard, limitation or other requirement under Section 111 or 112 (excluding 112 (r)) of the Federal Act. 1

6. Portable drums, barrels, and totes provided that the volume of each container does not exceed 550 gallons. 100 Storage Tanks and Equipment

7. All chemical storage tanks used to store a chemi cal with a true vapor pressure of less than or equal to 10 millimeters of mercury (0.19 psia).

INSIGNIFICANT ACTIVITIES BASED ON EMISSION LEVELS Description of Emission Units / Activities Quantity Antistat Application System 2

Asphalt Storage System (Tank and Coating) 1

Batch Charging (includes charger bins) 3

Batch House Rail/Truck Unload 1

Batch Mixing 1

Batch Scales 2

Batch Storage Bins 6

Batch Storage Silos 14

Batch Transfer/Bad Batch Chute 1

Belt Rollup 2

Binder Mix Tank 1

Binder Surge Tank 1

Bisect Saw 3

Blue Die Applicator 3

Chop to Length 4

Clarifier 1

Cold Glue Applicator System 2

Cullet Chute Systems 3Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 5 of 8 INSIGNIFICANT ACTIVITIES BASED ON EMISSION LEVELS Description of Emission Units / Activities Quantity Cullet Glass Storage Bays 3

Edge Trim System 2

Emergency Basin 1

End of Line Automation Stretch Wrapping 1

Equalization Basins 3

FG-1 Binder Use Tanks 2

FG-1 Wash Water Tank 1

FG-2 Binder Use Tanks 2

FG-2 Wash Water Tank 1

FG-3 Binder Use Tank 1

FG-3 Wash Water Tank 1

Form, Fill, and Seal Operation 1

Hammer/Cube Mills 2

Ink Jet Printer System 2

Inline Overwrap Printer System 2

Line Baggers 8

Pack Modulus 2

Packing and Overhead Conveyor System 1

Paper Room Shift Code Printer System 2

Plant Cullet Storage Hopper and Bins 3

Premix Tanks 3

Process Water Shaker Screens and Screw Presses (7 W W Screens, 2 Slitting Screens) 11

Propane/Air Blenders 1

Reclaim Water Tank, Centrifuges and Trench System 1

Repack Baggers 2

Resin Tanks 2

Rotary Chopper 3

Silane Tank 1

Slitter System 3

Stretch Wrap Printer System 1Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 6 of 8 INSIGNIFICANT ACTIVITIES BASED ON EMISSION LEVELS Description of Emission Units / Activities Quantity

Tanker Unload Area 1

Thickener Tank 1

Unitizer Operation 1

Unload to Truck Chute 1

Vacuum Roller 2Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 7 of 8 ATTACHMENT B (continued)

GENERIC EMISSION GROUPS

Emission units/activities appearing in the followin g table are subject only to one or more of Georgia Rules 391-3-1-.02 (2) (b), (e) &/or (n). Potential emissions of particulate matter, from these sources based on TSP, are less than 25 tons per year per p rocess line or unit in each group. Any emissions u nit subject to a NESHAP, NSPS, or any specific Air Qual ity Permit Condition(s) are not included in this ta ble.

Applicable Rules

Description of Emissions Units / Activities Number
of Units (if appropriate) Opacity

Rule (b) PM from

Mfg Process Rule (e) Fugitive Dust

Rule (n)

The following table includes groups of fuel burnin g equipment subject only to Georgia Rules 391-3-1-. 02 (2) (b) & (d).Any emissions unit subject to a NESHAP, NSPS, or any specific Air Quality Permit Co ndition(s) are not included in this table.

Description of Fuel Burning Equipment Number of Units

Fuel burning equipment with a rated heat input capa city of less than 10 million BTU/hr burning only na tural gas
and/or LPG. 0

Fuel burning equipment with a rated heat input capa city of less than 5 million BTU/hr, burning only di stillate fuel oil, natural gas and/or LPG. 0

Any fuel burning equipment with a rated heat input capacity of 1 million BTU/hr or less. 0Title V Permit Owens Corning Insulating Systems, LLC. Permit No.: 3296-121-0021-V-02-0

Appendix Page 8 of 8 ATTACHMENT C

LIST OF REFERENCES

1. The Georgia Rules for Air Quality Control Chapte r 391-3-1. All Rules cited herein which begin with 391-3-1 are State Air Quality Rules.

2. Title 40 of the Code of Federal Regulations; spe cifically 40 CFR Parts 50, 51, 52, 60, 61, 63, 64, 68, 70, 72, 73, 75, 76 and 82. All rules cited with these part s are Federal Air Quality Rules.

3. Georgia Department of Natural Resources, Environmen tal Protection Division, Air Protection Branch, Procedures for Testing and Monitoring Sources of Ai r Pollutants.

4. Georgia Department of Natural Resources, Environmen tal Protection Division, Air Protection Branch, Procedures for Calculating Air Permit Fees

.

5. Compilation of Air Pollutant Emission Factors, A P-42, Fifth Edition, Volume I: Stationary Point and Area Sources. This information may be obtained from EPA 's TTN web site at www.epa.gov/ttn/chief/ap42.html

.

6. The latest properly functioning version of EPA's TANKS emission estimation software. The software may be
obtained from EPA's TTN web site at www.epa.gov/ttn/chief/tanks.html

.

7. The Clean Air Act (42 U.S.C. 7401 et seq).

8. White Paper for Streamlined Development of Part 70 Permit Applications, July 10, 1995 (White Paper #1).

9. White Paper Number 2 for Improved Implementation of the Part 70 Operating Permits Program, March 5, 1996 (White Paper #2).