PURPOSE: This rule restricts volatile organic compounds from industrial surface coating operations.

1. (1) Applicability.

   1. (A) This rule shall apply throughout St. Louis City and Jefferson, St. Charles, Franklin and St. Louis Counties.
   2. (B) This rule shall apply to any installation with actual emissions of greater than two and one-half (2 1/2) tons in any calendar year after December 1, 1989, of volatile organic 10 CSR 10-5

compounds (VOCs) from surface coating operations covered under this rule. This includes any installation which does not have an allowable VOC emission limit established under 10 CSR 10-6.060 or legally enforceable state implementation plan revision, which has actual VOC emissions of greater than two and one-half (2 1/2) tons in any calendar year after December 1, 1989. Once a source is determined to exceed the applicability level of this rule, it shall remain subject to this rule even if its actual emissions drop below the applicability level.

1. (C) This rule is not applicable to the surface coating of the following metal parts and products:

   1. 1. Automobile refinishing;
   2. 2. Customizing top coating of automo-

biles and trucks, if production is less than thirty-five (35) vehicles per day; and

1. 3. Exterior of marine vessels.

1. (2) Definitions of certain terms specified in this rule may be found in 10 CSR 10-6.020.
2. (3) General Provisions. No person shall emit to the atmosphere any VOC from any surface coating operation in excess of the amount allowed in section (4). A surface coating operation includes an application area(s), flashoff area(s), oven(s) and any other functional area needed to complete a coating.

3. (4) Tables of Emission Limitations and Dates of Compliance.

   1. (A) Table A: VOC Emission Limits Based on Solids Applied. Emission Limit lbs. Operations VOC/gal. Dates of Surface Coating Solids Applied Compliance Auto/light duty truck Topcoat 15.1 12/1/89 Spray Prime or Primer Surfacer 15.1 12/1/89
   2. (B) Table B: VOC Emission Limits Based on Weight of VOC per Gallon of Coating (minus water and non-VOC organic compounds). Emission Limit lbs. VOC/gal. Coating (less water & non-VOC Dates of Surface Coatings organic Compliance Operations compounds) (See Note) Large Appliance Topcoat 2.8 12/31/81 Final Repair 6.5 12/31/81 Magnet Wire 1.7 12/31/81 Metal Furniture 3.0 12/31/81 Auto/Light Duty Truck Chrysler Motor Co. (Car) Prime-Electrocoat 1.2 12/31/85 Spray Prime

Topcoat

Final Repair Miscellaneous Metal Parts Extreme Performance and Air Dried Coatings All Other Coatings 3.0 Chrysler Motor Co. (Truck) Prime-Electrocoat Spray Prime

Topcoat Final Repair Miscellaneous Metal Parts Extreme Performance and Air Dried Coatings All Other Coatings 3.0 Ford Motor Company Prime-Electrocoat Spray Prime Topcoat Final Repair Miscellaneous Metal Parts Extreme Performance and Air Dried Coatings All Other Coatings 3.0 General Motors Company Cathodic Electrocoat1.2 Primer Surfacer Topcoat

Final Repair Miscellaneous Metal Parts Extreme Performance and Air Dried Coatings All Other Coatings 3.0 Paper Vinyl Fabric Coil Can 2 Piece Exterior Sheet 4.0 Basecoat 2 and 3 Piece Interior Body Spray 2 Piece End Exterior 4.2 3 Piece Side Seam 5.5 End Seal Compound 4.2 Railroad Cars, Farm Implements and Machinery, and Heavy Duty Trucks Other Metal Parts Clear Coat Extreme Performance and Air Dried Coatings 3.5 All Other Coatings 3.0 Plastic Parts Mail Boxes and Shutters 4.2 12/31/79 3.4 12/31/83 2.8 12/31/85 3.9 12/31/79 3.0 12/31/84 2.5 12/31/85 4.8 12/31/81

3.5 12/31/82 12/31/82

1.2 12/31/84 4.4 12/31/79 3.4 12/31/82 2.8 12/31/84 3.9 12/31/79 2.5 12/31/84 4.8 12/31/84

3.5 12/31/82 12/31/82

1.2 12/31/82 3.2 12/31/83 3.6 12/31/84 4.8 12/31/84

3.5 12/31/82 12/31/82 12/31/82 3.0 12/31/82 2.8 12/31/84 5.8 12/31/79 5.0 12/31/81 2.8 12/31/84 6.5 7/1/79 4.8 12/31/84

3.5 12/31/82 12/31/82 2.9 12/31/81 3.8 12/31/81 2.9 12/31/81 2.6 12/31/81 12/31/82 2.8 12/31/85 4.2 12/31/82 12/31/82 12/31/82 12/31/82 3.7 12/31/85

3.5 12/31/82 4.3 12/31/82 12/31/82 12/31/82 3.5 4/11/84 3.5 4/11/85 Note: The emission limit associated with the latest compliance date for each surface coating process supersedes interim emission limits associated with earlier compliance dates. No coating operation shall have emission limits from Tables A and B that apply at the same time.

1. (5) Determination of Compliance. Compliance with section (4) of this rule shall be determined by one (1) of the following methods specified in subsections (5)(A) and (B) as applicable and appropriate:

   1. (A) For subsection (4)(A), Table A, the calculation of daily volume-weighted emission performance for automobile and light duty truck primer surfacer and topcoat operations shall be made according to procedures detailed in the United States Environmental Protection Agency (EPA) document entitled “Protocol for Determining the Daily Volatile Organic Compound Emission Rate of Automobile and Light Duty Truck Topcoat Operations” (U.S. EPA-450/3-88-018) dated December, 1988; and

   2. (B) For subsection (4)(B), Table B—

      1. 1. Compliance with the emission limits

may be determined using the method referenced in 10 CSR 10-6.030(14)(C) using the one (1)-hour bake. Emission performance shall be on the basis of a daily volumeweighted average of all coatings used in each surface coating operation as delivered to the coating applicator(s) on a coating line. The daily volume-weighted average (DAVGvw) shall be calculated by the following formula:

n ∑ (Ai × Bi) i=1

DAVGVW = C

Where: A = daily gal. each coating used (minus water and exempt solvents) in a surface coating operation; B = lbs. VOC/gal. coating (minus water and exempt solvents); C = total daily gal. coatings used (minus water and exempt solvents) in a surface coating operation; and N = number of coatings used in a surface coating operation;

1. 2. Compliance with the emission limits

in subsection (4)(B), Table B may be determined on a pounds of VOC per gallon of coating solids basis. The determination is made by first converting the emission limit in subsection (4)(B), Table B to pounds of VOC per gallon of coating solids as shown in the following three (3) steps: lbs. VOC per gallon of coating (emission limit Volume minus water from (4)(B)) 1) =fraction 7.36 lbs. per gallon (average density of solvents of VOC used to originally establish the emission limit) 2) 1 — Volume fraction = Volume fraction of VOC solids lbs. VOC per gallon of coating (emission limit minus water from (4)(B)) =lbs. VOC 3) Volume fraction of solids gallons of coating solids

This value from step 3) is the new emission limit. It is equivalent to the emission limit in subsection (4)(B) on a coating solids basis. The VOC per gallon of coating solids for each coating solids used is then determined using the method referenced in 10 CSR 10- 6.030(14)(C) using the one (1)-hour bake. The composite daily weighted average of pounds of VOC per gallon of coating solids as tested for in the actual coatings used is compared to the new emission limit. Source operations on a coating line using coatings with a composite actual daily weighted average value less than or equal to the new emission limit, are in compliance with this rule; or

1. 3. Compliance with the emission limits

in subsection (4)(B), Table B may be determined on a pounds of VOC per gallon of coating solids applied basis. An owner or operator may request his/her emission limit be modified to be equivalent to the emission limit in subsection (4)(B), but in emission units of pounds of VOC emitted per gallon of coating solids applied. This new emission limit is derived by dividing the emission limit from paragraph (5)(B)2. by an appropriate value for transfer efficiency (TE) as determined by the director. Prior to this determination, the owner or operator shall demonstrate to the satisfaction of the director that an adequate, fully replicable TE test method exists for the source operation. Upon approval of the TE demonstration, the director will develop an emission limit equivalent to the applicable emission limit in subsection (4)(B).

1. (6) Record Keeping.

   1. (A) The owner or operator of a coating line shall keep records detailing specific VOC sources as necessary for the director to determine daily compliance. These may include:

      1. 1. Daily records of the type and the

quantity of coatings used daily;

1. 2. The coating manufacturer’s formula-

tion data for each coating on forms provided or approved by the director; Specific to the St. Louis Metropolitan Area

1. 3. Daily records of the type and quanti-

ty of solvents for coating, thinning, purging and equipment cleaning used;

1. 4. All test results to determine capture

and control efficiencies, TEs and coating makeup;

1. 5. Daily records of the type and quanti-

ty of waste solvents reclaimed or discarded daily;

1. 6. Daily records of the quantity of pieces

or materials coated daily; and

1. 7. Any additional information pertinent

to determining compliance.

1. (B) Records such as daily production rates may be substituted for actual daily coating use measurements provided the owner submits a demonstration approved by the director that these records are adequate for the purposes of this rule.
2. (C) Records required under subsections (6)(A) and (B) shall be retained by the owner or operator for a minimum of two (2) years. These records shall be made available to the director upon request.

1. (7) Compliance Schedules.

   1. (A) Owners or operators who were subject to this rule prior to December 1, 1989 shall be subject to the compliance dates set forth in section (4). Record keeping systems required of these owners or operators under section (6) shall be in place and functioning not later than April 1, 1990. All other subject owners or operators shall be in compliance and have all record keeping systems in place by December 1, 1990.
   2. (B) Owners or operators subject to this rule, but operating under alternate compliance plans as allowed prior to December 1, 1989, shall submit documentation by March 1, 1990 that their controls represent compliance with this rule. If the director determines that the documentation represents compliance, the director shall propose to the Missouri Air Conservation Commission subsequent rules’ amendments to make those control measures enforceable. If documentation is not submitted or if the director determines the documentation does not represent compliance, the owner or operator shall comply with section (4) of this rule. All owners or operators subject to this subsection shall demonstrate compliance by December 1, 1990.

AUTHORITY: section 643.050, RSMo Supp. 1999.* Original rule filed Dec. 15, 1978, effective July 12, 1979. Amended: Filed March 13, 1980, effective Sept. 12, 1980. Amended: Filed Aug. 15, 1983, effective Jan. 13, 1984. Amended: Filed Dec. 13, 1983, effective Jan. 13, 1984. Rescinded and readopted: Filed June 30, 1989, effective Nov. 26, 1989. Amended: Filed May 19, 2000, effective Jan. 30, 2001.

*Original authority: 643.050, RSMo 1965, amended 1972, 1992, 1993, 1995.