PURPOSE: This rule restricts volatile organic compound emissions from rotogravure and flexographic printing facilities.

1. (1) Application.

   1. (A) This rule shall apply throughout St. Louis City and Jefferson, St. Charles, Franklin and St. Louis Counties.
   2. (B) This rule applies to installations with uncontrolled potential emissions equal to or greater than two hundred fifty kilograms (250 kg) per day or one hundred (100) tons per year of volatile organic compounds (VOC) from the combination of rotogravure flexographic printing presses. The uncontrolled potential emissions are the potential emissions (as defined) plus the amount by weight of VOCs whose emission into the atmosphere is prevented by the use of air pollution control devices.

2. (2) Definitions.

   1. (A) Definitions of certain terms specified in this rule may be found in 10 CSR 10- 6.020.
   2. (B) The definition of a term specific to this rule is as follows: ink formulation as applied, includes the base ink and any additives such as thinning solvents to make up the ink material that is applied to a substrate.

3. (3) Emission Limits.

   1. (A) No owner or operator shall use or permit the use of any of the following printing presses unless they are equipped with a control device. The control device shall remove, destroy or prevent the emission of VOCs into the ambient air by at least the percentage indicated by weight of the uncontrolled VOC emissions on a daily weighted basis.

Printing Press Percentage Flexographic 60 Publication Rotogravure 75 Other Rotogravure 65

1. (B) Low solvent technology may be used to achieve VOC emission reductions instead of the methods required in subsection (3)(A). If low solvent technology is used, the following limits must be met for each press:

   1. 1. For waterborne inks, the volatile por-

tion of the ink as applied to the substrate must contain no more than twenty-five percent (25%) by volume of VOC; and

1. 2. For water-based or high solids inks,

the ink as applied to the substrate must be at least sixty percent (60%) by volume non- VOC material.

1. (C) No owner or operator shall use or permit the use of any flexographic or rotogravure printing press that uses cleanup solvents containing VOCs unless—

   1. 1. The cleanup solvents are kept in tight-

ly covered tanks or containers during transport and storage;

1. 2. The cleaning cloths used with the

cleanup solvents are placed in tightly closed containers when not in use and while awaiting off-site transportation. The cleaning cloths should be properly cleaned and disposed of. The cloths, when properly cleaned or disposed of, are processed in a way that as much of the solvent as practicable is recovered for some further use or destroyed. Cleaning and disposal methods shall be approved by the director; and

1. 3. An owner or operator may use an

alternate method for reducing cleanup solvent VOC emissions, including the use of low VOC cleanup solvents, if the owner or operator shows the emission reduction is equal to or greater than paragraphs (3)(C)1. and 2. This alternate method must be approved by the director.

1. (4) Recordkeeping.

   1. (A) For owners or operators using an addon control devices(s) to meet the requirements of subsection (3)(A), the following parameters shall be monitored and recorded to determine compliance with subsection (3)(A):

      1. 1. Exhaust gas temperature of all incin-

erators or temperature rise across a catalytic incinerator bed on a continuous basis;

1. 2. VOC breakthrough on a carbon

adsorption unit on a continuous basis;

1. 3. Results of emissions testing as

required in section (5) of this rule when performed;

1. 4. Maintenance, repairs and malfunction

of any air pollution control equipment when performed; and

1. 5. Any other monitoring parameter

required by the director to determine compliance with subsection (3)(A).

1. (B) For owners or operators meeting the requirements of subsection (3)(B) for each ink formulation used, the following shall be recorded for each press to determine continuous compliance with subsection (3)(B):

   1. 1. Volume-weighted ink VOC content in

percent by volume for each ink formulation as applied on a monthly basis;

1. 2. Results of ink testing as required in

section (5) of this rule when performed; and

1. 3. Any other information required by the

director to determine compliance with subsection (3)(B).

1. (C) For owners and operators order using low solvent technology without the use of control equipment to meet the requirements of subsection (3)(B), and for whom subsection (4)(B) does not apply, the following shall be recorded to determine daily compliance with subsection (3)(B):

   1. 1. Volume-weighted ink VOC content in

percent by volume for each ink formulation as applied on a monthly basis;

1. 2. Ink usage in gallons for each ink for-

mulation as applied on a daily basis for each press;

1. 3. Volume-weighted density of VOCs in

ink in pounds per gallon for each ink formulation as applied on a daily basis;

1. 4. Volume-weighted average of the VOC

content of each ink formulation as applied in percent by volume for each press on a daily basis;

1. 5. Ink water content in percent by vol-

ume for each ink formulation as applied on a daily basis for each press;

1. 6. Ink exempt solvent content in percent

by volume for each ink formulation as applied on a daily basis for each press;

1. 7. Results of ink testing as required in

section (5) of this rule when performed; and

1. 8. Any other information required by the

director to determine compliance with subsection (3)(B).

1. (D) Records of all information required in subsections (4)(A)–(C) shall be kept for at least two (2) years. These records shall be available immediately upon request for review by Department of Natural Resources personnel and other air pollution control agencies with proper authority.

1. (5) Determination of Compliance.

   1. (A) Testing and compliance demonstrations for the emission limits of subsection (3)(A) shall follow the procedures contained in 10 CSR 10-6.030(14)(A) and 10 CSR 10- 6.030(20). The averaging time for these tests shall be three (3) one (1)-hour tests. These procedures will determine control device capture efficiency and destruction efficiency. Control device testing will be required as the director determines necessary to verify the capture and destruction efficiencies. At a minimum, control device testing must be Specific to the St. Louis Metropolitan Area

completed and submitted once to the appropriate air pollution control agency within one hundred eighty (180) days after this provision of the rule is effective (Aug. 5, 1992), unless the director determines that a valid test is already on file. Inlet and outlet gas temperature rise across a catalytic incinerator shall be used to determine daily compliance. These temperatures shall be monitored with an accuracy of the greater of plus or minus three-fourths percent (0.75%) of the temperature being measured expressed in degrees Celsius or two and one-half degrees Celsius (2.5°C).

1. (B) Testing and compliance demonstrations for the emission limits of subsection (3)(B) shall follow the procedures contained in 10 CSR 10-6.030(14)(C). This procedure will determine the VOC content of inks. Ink testing will be required as the director determines necessary to verify the manufacturers’ formula specifications. At a minimum, ink testing will be required once after February 6, 1992. Ink manufacturer’s formula specifications shall be used to determine daily compliance.

1. (6) Compliance Dates.

   1. (A) The owner or operator of a rotogravure or flexographic printing installation subject to this rule must submit a final control plan to the director by December 31, 1980, for his/her approval. This plan must include the following:

      1. 1. A detailed plan of process modifica-

tions; and

1. 2. A time schedule for compliance con-

taining increments of progress and a final compliance date.

1. (B) Compliance with this rule shall be accomplished by any installation as expeditiously as practicable, but in no case shall final compliance extend beyond December 31, 1982.

AUTHORITY: section 643.050, RSMo 1994.* Original rule filed March 13, 1980, effective Sept. 12, 1980. Amended: Filed Nov. 10, 1981, effective May 13, 1982. Amended: Filed Oct. 4, 1988, effective March 11, 1989. Amended: Filed July 15, 1991, effective Feb. 6, 1992.

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