A. The provisions of this section are applicable to the following affected facilities: primary rock crushers, secondary rock crushers, tertiary rock crushers, screens, conveyors and conveyor transfer points, stackers, reclaimers, and all gravel or crushed stone processing plants and rock storage piles.
B. No person shall cause, allow or permit the discharge of particulate matter into the atmosphere except as fugitive emissions in any one hour from any gravel or crushed stone processing plant in total quantities in excess of the amounts calculated by one of the following equations:
1. For process sources having a process weight rate of sixty thousand pounds per hour (thirty tons per hour) or less, the maximum allowable emissions shall be determined by the following equation:
E = 3.59P 0.62
where:
E = the maximum allowable particulate emissions rate in pounds-mass per hour.
P = the process weight rate in tons-mass per hour.
2. For process sources having a process weight rate greater than sixty thousand pounds per hour (thirty tons per hour), the maximum allowable emissions shall be determined by the following equation:
E = 17.31P 0.16
where "E" and "P" are defined as indicated in subdivision 1 of this subsection.
C. The actual values shall be calculated from the applicable equations and rounded off to two decimal places.
D. Spray bar pollution controls shall be utilized in accordance with "EPA Control of Air Emissions From Process Operations in the Rock Crushing Industry" (EPA 340/1-79-002), "Wet Suppression System" (pages 15-34), amended as of January, 1979 (and no future amendments or editions), as incorporated herein by reference and on file with the Office of the Secretary of State, with placement of spray bars and nozzles as required by the control officer to minimize air pollution.
F. The owner or operator of any affected facility subject to the provisions of this section shall install, calibrate, maintain, and operate monitoring devices which can be used to determine daily the process weight of gravel or crushed stone produced. The weighing devices shall have an accuracy of ±five percent over their operating range.
G. The owner or operator of any affected facility shall maintain a record of daily production rates of gravel or crushed stone produced.
H. The test methods and procedures required by this section are as follows:
1. The reference methods in 40 CFR 60, Appendix A shall be used to determine compliance with the standards prescribed in this section as follows:
a. Methods 4 and 5 for concentration of particulate matter and moisture content;
b. Method 1 for sample and velocity traverses;
c. Method 2 for velocity and volumetric flow rate;
d. Method 3 for gas analysis.
2. For Method 5, the sampling time for each run shall be at least sixty minutes and the minimum sample volume is 0.85 dscm (thirty dscf), except that shorter sampling times or smaller volumes, when necessitated by process variables or other factors, may be approved by the control officer. Sampling shall not be started until thirty minutes after startup and shall be terminated before shutdown procedures commence. The owner or operator of the affected facility shall eliminate cyclonic flow during performance tests in a manner acceptable to the control officer.
(Ord. 1993-128 § 4 (part), 1993)