### Source Categories Emissions (tons/yr)%Cumulative

%

Adhesives and Sealants 1.00E-03 0.00 0.00 Aerospace Industries 7.15E-01 0.22 0.22 Agricultural Chemicals and Pesticides 5.56E-01 0.17 0.38 Air and Gas Compressors 2.50E-01 0.08 0.46
Aluminum Extruded Products 3.89E-01 0.12 0.58 Aluminum Foundries (Castings) [1] 1.36E-01 0.04 0.62
Animal Cremation 1.18E-02 0.00 0.62 Asphalt Concrete Manufacturing 9.00E-03 0.00 0.62 Asphalt Roofing Manufacturing 8.00E-03 0.00 0.63 Automotive stampings 5.15E-01 0.16 0.78 Ball and Roller Bearings Manufacturing 4.19E-01 0.13 0.91
Blowers and Fans 1.50E-01 0.05 0.95 Boat Manufacturing 5.00E-03 0.00 0.96 Bolts, Nuts, Rivets and Washers Manufacturing 5.00E-03 0.00 0.96
Brooms and Brushes 2.50E-01 0.08 1.03 Carburetors, Pistons, Rings and Valves Manufacturing 2.50E-01 0.08 1.11 Cement, Hydraulic (not subject to Portland Cement MACT) 3.58E-01 0.11 1.22 Chemical Manufacturing: Chromium Compounds 9.79E+00 2.96 4.17 Chemical Preparations 2.10E+00 0.63 4.81 Chromic Acid Anodizing 3.37E+00 1.02 5.82 Clay Products Manufacturing 1.10E+00 0.33 6.16 Clay Refractories (not subject to Refractories Manufacturing MACT) 4.00E-03 0.00 6.16 Cold Finishing of Steel Shapes 5.37E-01 0.16 6.32 Commercial Physical Research 5.00E-03 0.00 6.32 Conveyors and Conveying Equipment Manufacturing 5.05E-01 0.15 6.47 Copper Rolling and Drawing 1.26E-01 0.04 6.51 Custom Compound Purchased Resins Manufacturing 3.69E+00 1.12 7.63 Cutlery 2.50E-01 0.08 7.70 Cyclic Crude and Intermediate Production [2] 3.70E-01 0.11 7.82 Decorative Chromium Electroplating 9.94E+00 3.00 10.82 Electric Lamps 2.50E-01 0.08 10.89 Electrical and electronic equipment: finishing operations [3] 5.24E+00 1.58 12.48 Electrical Industrial Apparatus, nec 2.50E-03 0.00 12.48 Electronic Components, nec 7.50E-03 0.00 12.48 Engineering, Laboratory, Scientific and Research 2.50E-03 0.00 12.48 

### Chromium Compounds

Page 1

### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

Fabricated Metal Products Manufacturing 1.25E-01 0.04 12.52 Fabricated Metal Products, nec 1.40E+00 0.42 12.94 Fabricated Pipe and Fittings 1.25E-01 0.04 12.98 Fabricated Plate Work (Boiler Shops) 1.18E+01 3.57 16.54 Fabricated Rubber Products, nec 5.00E-03 0.00 16.55 Fabricated Structural Metal Manufacturing 6.38E+00 1.93 18.47
Fabricated Structural Metal Products 2.35E-02 0.01 18.48 Farm Machinery and Equipment Manufacturing 1.02E+00 0.31 18.79 Ferroalloy Production [4] 2.60E+00 0.79 19.57 Fluid Power Cylinders and Activators 2.50E-03 0.00 19.57 Fluid Power Pumps and Motors 1.90E-02 0.01 19.58 Food Products Machinery 1.36E-01 0.04 19.62 Food Products Machinery Manufacturing 1.00E-02 0.00 19.62 Gaskets, Packing and Sealing Devices Manufacturing 3.50E-03 0.00 19.62 General Industrial Machinery Manufacturing 5.15E-01 0.16 19.78 Hand and Edge Tools Manufacturing 3.05E-01 0.09 19.87 Hard Chromium Electroplating 1.38E+0241.6761.54 Hardware Manufacturing 2.66E-01 0.08 61.62 Hazardous Waste Incineration [5] 1.85E+00 0.56 62.18 Heating Equipment, Except Electric 4.14E+00 1.25 63.43 Heavy Construction, Nec 1.25E-01 0.0463.46
Human Cremation 4.58E-03 0.00 63.47 Hydrochloric Acid Production 8.91E-06 0.00 63.47
Industrial Boilers 1.64E+00 0.50 63.96
Industrial Furnaces and Ovens 1.63E-01 0.05 64.01 Industrial Inorganic Chemical Manufacturing 1.14E+01 3.45 67.46 Industrial Machinery, nec 3.85E-01 0.12 67.58 Industrial Manufacturing and Equipment: finishing operations [6] 4.84E+00 1.46 69.04 Industrial Organic Chemicals Manufacturing 1.30E-01 0.0469.08 Inorganic Pigments Manufacturing 3.18E+00 0.9670.04
Institutional/Commercial Heating 2.40E+00 0.72 70.76 Internal Combustion Engine Manufacturing 2.50E-03 0.0070.77 Iron and Steel Forging 4.79E+00 1.45 72.21 Iron and Steel Foundries (not subject to Iron Foundries MACT)2.50E-01 0.08 72.29
Iron Foundries 2.58E+00 0.78 73.07

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### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

Large Appliance (Surface Coating) 2.65E-01 0.08 73.15 Lead Acid Battery Manufacturing 5.00E-03 0.0073.15 Lead Pencils, Art Goods Manufacturing 2.50E-01 0.08 73.22 Leather Tanning and Finishing Operations 1.16E-01 0.0473.26 Lighting Equipment 5.00E-03 0.0073.26
Machine Tool Accessories 2.50E-03 0.0073.26 Machine tools, Metal Cutting Types 2.79E-01 0.08 73.35 Magnetic and Optical Recording Media Manufacturing 1.33E-01 0.0473.39
Manifold Business Forms 1.25E-01 0.0473.42 Manufacturing Industries, nec 3.25E-01 0.1073.52 Meat Packing Plants 5.00E-03 0.0073.52
Medical Waste Incinerators 4.15E-01 0.1373.65 Metal Barrels, Drums, and Pails Manufacturing 2.50E-03 0.0073.65 Metal coating and allied services 7.81E-01 0.2473.88 Metal Coil (Surface Coating) 1.07E-01 0.0373.92 Metal Doors, Sash, and Trim 2.50E-01 0.08 73.99 Metal Forgings and Stampings 1.25E-01 0.0474.03 Metal Furniture (Surface Coating) 2.50E-03 0.0074.03 Metal Heat Treating Manufacturing 1.30E-01 0.0474.07 Metal Sanitary Ware Manufacturing 3.78E-01 0.11 74.18 Metal Services, nec 1.25E-01 0.0474.22 Metal Stampings Manufacturing 6.29E-01 0.19 74.41 Metal Valves [7] Metalworking Machinery 2.53E-01 0.08 74.49 Mining Machinery Manufacturing 5.03E-01 0.15 74.64
Miscellaneous Fabricated Metal Products 6.51E-01 0.2074.84
Miscellaneous Fabricated Wire Products 6.54E-01 0.2075.03
Miscellaneous Plastics Products 1.75E-02 0.01 75.04 Miscellaneous Organic Chemical Manufacturing (MON) 1.03E-01 0.0375.07 Municipal Waste Combustors 1.70E-01 0.05 75.12 Nonclay Refractories (not subject to Refractories Manufacturing MACT) 7.85E-01 0.2475.36 Noncurrent-Carrying Wiring Devices 2.50E-03 0.0075.36 Nonferrous Die-castings, Except Aluminum 2.50E-01 0.08 75.44 Nonferrous Forgings 3.93E-01 0.12 75.55 Nonferrous Foundries, nec 8.58E-01 0.2675.81

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### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

Nonferrous Rolling and Drawing 2.67E-01 0.08 75.89 Paints and Allied Products Manufacturing 6.73E+00 2.0377.93 Paper and Other Webs (Surface Coating) 2.50E-01 0.08 78.00 Paper Industries Machinery 6.27E-01 0.19 78.19 Paperboard Mills 5.00E-03 0.0078.19
Petroleum Refining (not subject to Petroleum Refining MACT)1.67E-01 0.05 78.24 Photographic Equipment And Supplies 5.00E-03 0.0078.24 Plastic materials and resins manufacturing [8] 1.30E-01 0.0478.28 Plastic Parts and Products (Surface Coating) 6.99E+00 2.11 80.39 Plating And Polishing 1.15E+01 3.48 83.87 Plumbing And Heating, Except Electric 1.28E-01 0.0483.91 Plumbing Fixture Fittings and Trim 3.35E-01 0.10 84.01 Plywood/Particle Board Manufacturing 1.75E-04 0.00 84.01 Polishes and Sanitation Goods Manufacturing 1.15E-02 0.00 84.02 Portland Cement Combined [9] 1.34E-01 0.0484.06 Power Transmission Equipment 5.00E-04 0.00 84.06 Prepared Feeds Manufacturing 2.50E-01 0.08 84.13 Pressed and Blown Glass and Glassware Manufacturing [10]1.27E+00 0.38 84.52 Primary Copper (not subject to Primary Copper Smelting MACT) 2.50E-01 0.08 84.59 Primary Copper Smelting [11] Primary Metal Products Manufacturing 5.49E+00 1.66 86.25 Primary Nonferrous Metals Production 1.60E-01 0.05 86.30 Printing Ink 5.37E-01 0.16 86.46 Printing Trades Machinery Manufacturing 1.85E+00 0.56 87.02 Printing, Coating, and Dyeing of Fabrics 1.46E+00 0.4487.46 Printing/Publishing (Surface Coating) 8.00E-02 0.02 87.49
Process Control Instruments 8.50E-03 0.00 87.49 Radio and Television Communications Equipment (3663) 5.00E-03 0.00 87.49 Railroad Equipment Manufacturing 2.50E-01 0.08 87.57 Refractories Manufacturing 6.48E-01 0.20 87.76 Reinforced Plastic Composites Production 1.46E-01 0.0487.81 Rubber and Plastic Hose and Belting Manufacturing 1.25E-01 0.0487.84
Saw Blades and Handsaws 3.50E-03 0.00 87.84 Screw Machine Products Manufacturing 2.55E-02 0.01 87.85 Secondary Lead Smelting 2.15E-03 0.00 87.85

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### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

Secondary Nonferrous Metals Production 1.14E+00 0.3488.20 Sewage Sludge Incineration 3.00E+00 0.91 89.10
Sheet Metal Work 7.76E-01 0.2389.34 Shipbuilding and Ship Repair (Surface Coating) 4.69E-03 0.00 89.34
Small Arms 1.28E-01 0.0489.38 Soap and Other Detergents Manufacturing 2.55E-01 0.08 89.45 Space Research and Technology 1.28E-01 0.0489.49 Special Dies, Tools, Jigs and Fixtures 5.00E-01 0.15 89.64 Special Industry Machinery, nec 6.25E-02 0.02 89.66 Speed Changers, Drives, and Gears 3.10E-02 0.01 89.67 Stainless and Non-stainless Steel Manufacture - EAF [11] 8.81E+00 2.66 92.33 Stationary Internal Combustion Engines 4.92E-02 0.01 92.35 Steel and Iron Reclamation- Auto Scrap Burning 5.00E-01 0.15 92.50
Steel Foundries 1.89E+01 5.71 98.21 Steel Pipe and Tubes Manufacturing 8.30E-01 0.25 98.46 Steel Springs, Except Wire 2.50E-03 0.00 98.46 Steel Wire and Related Products Manufacturing 5.08E-01 0.15 98.61 Surface Active Agents Manufacturing 2.50E-03 0.00 98.61 Surgical and Medical Instruments Manufacturing 1.25E-01 0.0498.65 Switchgear and Switchboard Apparatus 1.25E-01 0.0498.69 Tanks and Tank Components Manufacturing 2.50E-03 0.00 98.69 Textile Machinery 3.50E-03 0.00 98.69
Tire Production 1.21E-02 0.00 98.69 Transformers, Except Electronic 5.00E-03 0.00 98.69
Turbines and Turbine Generator Sets 3.77E-01 0.11 98.81 Unsupported Plastics Profile Shapes 3.78E-01 0.11 98.92 Valves and Pipe Fittings Manufacturing [7] 7.87E-01 0.2499.16 Welding Apparatus 1.78E-01 0.05 99.21 Welding Apparatus, Electric 1.25E-01 0.0499.25 Wire Springs 1.01E+00 0.30 99.56 Wood Preserving 1.47E+00 0.44100.00 Wool Fiberglass Manufacturing 1.21E-03 0.00100.00

Total Emissions331.14100.00

Page 5

### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

Foot Notes [1] Aluminum Foundries (casting) (Nov. 2002 Inventory) combines two May 1999 categories: Aluminum Foundries and Aluminum Foundries (casting) [2] Cyclic Crude and Intermediate Production was titled Cyclic Crude and Intermediate Production (not subject to petroleum refining MACT) in the May 1999 Report [3] Electrical and Electronic Equipment: Finishing Operations (Nov. 2002 Inventory) combines two May 1999 categories: Electronic Equipment and Supplies, nec and Motor and Generators Manufacturing [4] Ferroalloy Production was named Electrometallurgical Production in the May 1999 Report [5] Hazardous Waste Incinerators were only included in the May 1999 Report for dioxins/furans; additionally, those emissions were all attributed to major sources [6] Industrial Machinery and Equipment: Finishing Operations (Nov. 2002 Inventory) combines three May 1999 categories: Oil and Gas Field Machinery Manufacturing, Pumps and Pumping Equipment Manufacturing, and Construction Machinery Manufacturing [7] Valves and Pipefittings (Nov. 2002 Inventory) combines two May 1999 categories for chromium, manganese, and nickel: the Metal Valves category and the Valves and Pipefittings Manufacture category [8] Plastics Materials and Resins Manufacturing (Nov. 2002 Inventory) was titled Polymers and Resins (I,II,IV) in the May 1999 Report [9] Portland Cement was only included in the 1999 inventory for
dioxins/furans [10] Pressed and Blown Glass and Glassware Manufacturing (Nov. 2002 Inventory) combines two May 1999 categories: Pressed and Blown Glass and Glassware Manufacturing and
Glass Containers

Page 6

### Source Categories Emissions (tons/yr)%Cumulative

% Chromium Compounds

[11] Stainless and Nonstainless EAF (Nov. 2002 Inventory) combines two May 1999 categories: Stainless and
Nonstainless EAF and Blast Furnaces and Steel Mills' area

sources [12] Primary Copper Smelting was removed from the 2002 Inventory

Page 7