Mo. Code Regs. Ann. tit. 10, § 10-5.240 – Additional Air Quality Control Measures May be Required When Sources Are Clustered in a Small Land Area

PURPOSE: This rule provides that more restrictive air quality control requirements may be prescribed for areas in which the sum of particulate and/or sulfur dioxide emissions from existing and proposed sources exceed specified limits.

(1) Areas to Which This Regulation Applies.
1. (A) This regulation shall apply to areas in which there are one (1) or more existing sources and/or proposed new sources of particulate matter in any circular area with a diameter of two (2) miles (including sources outside metropolitan area) from which the sum of particulate emissions allowed from these sources by regulations of general application are or would be greater than two thousand (2,000) tons per year or five hundred
(500) pounds per hour.
1. (B) This regulation shall apply in areas in which there are one (1) or more existing sources and/or proposed new sources of Specific to the St. Louis Metropolitan Area

sulfur dioxide in any circular area with a diameter of two (2) miles from which the sum of sulfur dioxide emissions from these sources allowed by regulations of general application are or would be greater than one thousand (1,000) tons for any consecutive three (3) months or one thousand (1,000) pounds per hour.

(2) Air Conservation Commission May Prescribe More Restrictive Air Quality Control Measures. In areas where this regulation applies, as specified in section (1), the Air Conservation Commission may prescribe air quality control requirements that are more restrictive and more extensive than provided in regulations of general application.

AUTHORITY: section 643.050, RSMo 1994.* Original rule filed March 14, 1967, effective March 24, 1967.

*Original authority: 643.050, RSMo 1965, amended 1972, 1992, 1993. Op. Atty. Gen. No. 331, Shell (11-15-71). The Missouri Air Conservation Commission has the authority under Chapter 203, RSMo (1969) and the Constitution of Missouri to enforce without delay the provisions of Chapter 203, RSMo (1969) and standards, regulations corresponding, through administrative procedures and injunctive relief.