Mo. Code Regs. Ann. tit. 10, § 10-5.250
PURPOSE: This rule specifies the time schedule for compliance with regulations by new and existing sources.
(1) General Provisions. Except as otherwise specified, compliance with the provisions of this regulation shall be according to the following time schedule:
months of the effective date (September 24, 1967) unless the owner or person responsible for the operation of the installation shall have submitted to the director in a form and manner satisfactory to him/her a program and schedule for achieving compliance, the program and schedule to contain a date on or before which full compliance will be attained, and other information as the director may require. If approved by the director, that date will be the date on which the person shall comply. The director may require persons submitting the program to submit subsequent periodic reports on progress in achieving compliance; and
(C) All other dates notwithstanding, all existing installations in Franklin County shall be in compliance with this regulation by January 31, 1972, except for—
range between two thousand and ten thousand (2000—10,000) inhabitants shall be in compliance with 10 CSR 10-5.070 by September 20, 1972;
than two thousand (2000) inhabitants shall be in compliance with 10 CSR 10-5.070 by September 20, 1973; and
the use of fuel shall be in compliance with 10 CSR 10-5.110 by January 31, 1973.
AUTHORITY: section 643.050, RSMo 1994.* Original rule filed March 14, 1967, effective March 24, 1967. Amended: Filed Jan. 31, 1972, effective Feb. 10, 1972. *Original authority 1965, amended 1972, 1992, 1993.