Ariz. Admin. Code § 18-2-716

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-2-716 - Standards of Performance for Existing Coal Preparation Plants

A. The provisions of this Section are applicable to any of the following affected facilities in coal preparation plants: thermal dryers, pneumatic coal-cleaning equipment, coal processing and conveying equipment including breakers and crushers, coal storage systems, and coal transfer and loading systems. For purposes of this Section, the definitions contained in 40 CFR 60.251 are adopted by reference and incorporated herein.

B. No person shall cause, allow or permit the discharge of particulate matter into the atmosphere in any one hour from any existing coal preparation 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 60,000 pounds per hour (30 tons per hour) or less, the maximum allowable emissions shall be determined by the following equation:

E = 4.10P^0.67

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 60,000 pounds per hour (30 tons per hour), the maximum allowable emissions shall be determined by the following equation:

E = 55.0P^0.11 -40

where "E" and "P" are defined as indicated in subsection (B)(1).

C. Actual values shall be calculated from the applicable equations and rounded off to two decimal places.

D. For purposes of this Section, the total process weight from all similar units employing a similar type process shall be used in determining the maximum allowable emission of particulate matter.

E. Fugitive emissions from coal preparation plants shall be controlled in accordance with R18-2-604 through R18-2-607.

F. The test methods and procedures required by this Section are as follows:

1. The reference methods in the 40 CFR 60, Appendix A, as incorporated by reference in Appendix 2 of this Chapter, are used to determine compliance with standards prescribed in subsection (B) as follows:

a. Method 5 for the concentration of particulate matter and associated 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 60 minutes and the minimum sample volume is 0.85 dscm (30 dscf) except that short sampling times or smaller volumes, when necessitated by process variables or other factors, may be approved by the Director. Sampling shall not be started until 30 minutes after start-up 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 Director.

3. The owner or operator shall construct the facility so that particulate emissions from thermal dryers or pneumatic coal cleaning equipment can be accurately determined by applicable test methods and procedures under subsection (F)(1).

Ariz. Admin. Code § R18-2-716

Section R18-2-716 renumbered from R18-2-516 and amended effective November 15, 1993 (Supp. 93-4). Amended by final rulemaking at 15 A.A.R. 281, effective March 7, 2009 (Supp. 09-1).