Control of air pollution from sulfur compounds.
Tulsa Revised Ordinances tit. 17, § 715
in effectSection 715. - Control of air pollution from sulfur compounds.
A. Purpose. It is the purpose of this regulation to control emission of sulfur compounds from stationary sources in the City of Tulsa and thereby to promote and protect the health and welfare of its residents.
B. Limitation of ambient conditions. No person shall cause, suffer, allow or permit the emission of sulfur compounds from any premise in such a manner and amounts that the concentrations attributable to such emissions exceed the following at any place beyond the boundary of the property on which the source is located:
SO 2
1350 ug/m 3 - Three-minute average
1200 ug/m 3 - One-hour average
650 ug/m 3 - Three-hour average
130 ug/m 3 (.05 ppm) Twenty-four-hour average
H 2 SO 4 and/or SO 3 calculated as H 2 SO 4 10 ug/m 3 (2.45 x 10 -3 ppm)
H 2 S 70 ug/m 3 (.05 ppm)
Determination of violations may be made either by ambient air monitoring at the property line on which the source is located or by atmospheric diffusion modeling. Testing procedures, diffusion models and equipment to determine whether or not emissions standards required by this subsection are met shall be approved by the Director.
C. Emission limitation from point sources. No person shall cause, suffer, allow or permit the discharge into the atmosphere of sulfur compounds from any stack, vent or other such exhaust system, in excess of the following:
1. Existing installation:
SO 2 5.32 g/m 3 (2,000 ppm)
H 2 SO 4 and/or SO 3 in any combination calculated as H 2 SO 4
70 mg/m 3 (17 ppm) H 2 S 140 mg/m 3 (100 ppm)
2. New installations:
SO 2 1.3 g/m 3 (500 ppm)
H 2 SO 4 and/or SO 3 in any combination calculated as H 2 SO 4 50 mg/m 3 (12.3 ppm)
H 2 S 140 mg/m 3 (100 ppm)
Where:
g = grams
mg = milligrams
ug = micrograms
ppm = parts per million
Testing procedures and equipment to determine whether or not emissions standards required by this subsection are met shall be approved by the Director.
D. Specific new source process weights limitations. No person shall cause, suffer, allow or permit the emission of sulfur compounds into the atmosphere from the following specific new sources in excess of the amounts shown below.
1. Sulfuric acid plants.
a. SO 2 - Two (2) kgm per metric ton (four (4) pounds per ton) of H 2 SO 4 produced, the total production being expressed as one hundred percent (100%) H 2 SO 4 .
b. H 2 SO 4 - .075 kgm per metric ton (0.15 pounds per ton) of acid produced, the production being expressed as one hundred percent (100%) H 2 SO 4 .
c. Visible emission of ¼ Ringelmann (five percent (5%) opacity).
2. Fuel burning equipment.
a. SO x measured as SO 2 - .36 gm/106 calories (0.2 pounds/10 6 BTU), heat input derived from gaseous fossil fuel.
b. SO x measured as SO 2 - 1.4 gm/10 6 calories (0.8 pounds/10 6 BTU), heat input derived from liquid fossil fuel.
c. SO x measured as SO 2 - 2.2 gm/10 6 calories (1.2 pounds/10 6 BTU), heat input derived from solid fossil fuel.
d. Where different states of fuels are burned simultaneously, the following formula will apply:
[x(.36) + y(1.4) + z(2.2)] / (x + y + z)=Total Heat Input
Where "x" is the percent of total heat input derived from gaseous fuels, "y" is the percent of total heat input derived from liquid fuels; "z" is the percent of total heat input derived from solid fuels.
3. Nonferrous smelters. The emission of sulfur oxides, calculated as sulfur dioxide, from new nonferrous smelters is restricted according to the following equations as a maximum two-hour average:
a. Copper Smelters: Y = 0.2X
b. Zinc Smelters: Y = 0.564X 0.85
c. Lead Smelters: Y = 0.98X 0.77
Where X - Total sulfur fed to smelter (one (1) lb/hr)
Where Y - Sulfur dioxide emissions (one (1) lb/hr)
4. Paper pulp mill. The emission of sulfur oxides, calculated as sulfur dioxide, from the blow pits, washer vents, storage tanks, digester, relief and recovery furnace of any new paper pulp mill shall not exceed eighteen (18) pounds per air dried ton of pulp produced, maximum two-hour average.
E. Hydrogen sulfide emission limit from new petroleum or natural gas processing equipment. No person shall cause, suffer or allow the discharge into the atmosphere of hydrogen sulfide from any new petroleum or natural gas processing equipment without removal of the hydrogen sulfide from the exhaust gas or oxidizing it to sulfur dioxide in a system which ensures at all times complete combustion of the hydrogen sulfide with the exhaust gas then being emitted from a stack at least fifty (50) feet in height. Efficiency of these removal or oxidation systems shall not allow emission of more than three tenths (0.3) pounds per hour of hydrogen sulfide as a two-hour maximum, with a maximum efficiency required of ninety-five percent (95%) and a minimum efficiency required of ninety percent (90%) of the hydrogen sulfide in the exhaust gas.
F. Applicability. In any situation in which more than one (1) requirement of this regulation is applicable, the more restrictive provision shall govern.
(Ord. No. 13740)
Source: City of Tulsa, Revised Ordinances and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ok/tulsa/codes/code_of_ordinances?nodeId=COOR_TIT17HERE_CH7CLAICO_S715COAIPOSUCOFetched: 10/28/2026