R18-2-715. Standards of Performance for Existing Primary Copper Smelters; Site-specific Requirements

A. No owner or operator of a primary copper smelter shall cause, allow or permit the discharge of particulate matter into the

atmosphere from any process in total quantities in excess of the amount 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 = 4.10P0.67

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 = 55.0P0.11-40

where “E” and “P” are defined as indicated in subsection (A)(1).

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

C. 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 for that process.

D. The opacity of emissions subject to the provisions of this Section shall not exceed 20%.

E. The reference methods set forth in the Arizona Testing Manual and 40 CFR 60, Appendix A, as incorporated by reference in 

Appendix 2 of this Chapter, shall be used to determine compliance with the standards prescribed in this Section as follows:

1. Method A1 or Reference Method 5 for concentration of particulate matter and associated moisture content,

2. Reference Method 1 for sample and velocity traverses,

3. Reference Method 2 for volumetric flow rate,

4. Reference Method 3 for gas analysis.

F. Except as provided in a consent decree or a delayed compliance order, the owner or operator of any primary copper smelter shall 

not discharge or cause the discharge of sulfur dioxide into the atmosphere from any stack required to be monitored by R18-2-

715.01(K) in excess of the following:

1. For the copper smelter located near Hayden, Arizona at latitude 33°0’29”N and longitude 110°47’17” W:

a. Annual average emissions, as calculated under R18-2-715.01(C), shall not exceed 6,882 pounds per hour.

b. The number of three-hour average emissions, as calculated under R18-2-715.01(C), shall not exceed n cumulative 

occurrences in excess of E, the emission level, shown in the following table in any compliance period as defined in 

R18-2-715.01(J):

n,

Cumulative

Occurrences

E,

(lb/hr)

0 24,641

1 22,971

2 21,705

4 20,322

7 19,387

12 18,739

20 17,656

32 16,988

48 16,358

68 15,808

94 15,090

130 14,423

180 13,777

245 13,212

330 12,664

435 12,129

560 11,621

710 11,165

890 10,660
1100 10,205

1340 9,748

1610 9,319

1910 8,953

2240 8,556

2. For the copper smelter located near Miami, Arizona at latitude 33°24’50”N and longitude 110°51’25”W:

a. Annual average emissions, as calculated under R18-2-715.01(C), shall not exceed 604 pounds per hour.

b. The number of three-hour average emissions, as calculated under R18-2-715.01(C), shall not exceed n cumulative 

occurrences in excess of E, the emission level, shown in the following table in any compliance period as defined in 

R18-2-715.01(J):

n,

Cumulative

Occurrences

E,

(lb/hr)

0 8678

1 7158

2 5903

4 4575

7 4074

12 3479

20 3017

32 2573

48 2111

68 1703

94 1461

130 1274

180 1145

245 1064

330 1015

435 968

560 933

710 896

890 862

1100 828

1340 797

1610 765

1910 739

2240 712

G. Except as provided in a consent decree or a delayed compliance order, for the copper smelter located near Hayden, Arizona at 

latitude 33°0’29”N and longitude 110°47’17”W, annual average fugitive emissions calculated under R18-2-715.01(T) shall 

not exceed 295 pounds per hour.

H. In addition to the limits in subsection (F)(3), except as provided in a consent decree or a delayed compliance order, the owner 

or operator of the copper smelter located near Miami, Arizona at latitude 33°24’50”N and longitude 110°51’25”W shall not 

discharge or cause the discharge of sulfur dioxide into the atmosphere from combined stack and fugitive emissions units in 

excess of the 2420 pounds per hour annual average calculated under R18-2-715.01(U).

Historical Note

Section R18-2-715 renumbered from R18-2-515 and amended effective November 15, 1993 (Supp. 93-4). Amended by final 

rulemaking at 8 A.A.R. 575, effective January 15, 2002 (Supp. 02-1). Amended by final rulemaking at 8 A.A.R. 3365, 
effective July 18, 2002 (Supp. 02-3). Amended by final rulemaking at 13 A.A.R. 2157, effective August 4, 2007 (Supp. 

07-2). Amended by final rulemaking at 15 A.A.R. 281, effective March 7, 2009 (Supp. 09-1).