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Standard Exemptions 1 - 6, July 26, 1985

Outdated Title 30 TAC 116 Standard Exemptions organized by exemption number and date.


Clicking on a highlighted number below links you to the standard exemption.

1 | 2 | 3 | 4 | 5 | 6

1. Any facility constructed and operated at a domestic residence for domestic use.

2. Dual-chambered incinerators with a burner in the secondary chamber that maintains a temperature of 1200F or higher in the secondary chamber and with a burning capacity equal to or less than 1000 pounds per hour for type 0, type I and type II waste only and which meet the following conditions. Types of waste are defined by the U.S. Environmental Protection Agency in Field Operations and Enforcement Manual for Air Pollution Control, Volume II, APTD-1101.

  1. Operating instructions must be posted at the incinerator.
  2. Fuel shall be sweet natural gas, LP gas or No. 2 fuel oil with less than 0.5% sulfur by weight.

3. Combustion units designed for comfort heating purposes employing LP gas or natural gas as a fuel.

4. Comfort air conditioning systems or comfort ventilating systems which are not used to remove air contaminants generated by or released from specific units of equipment.

5. IC engine driven compressors, IC engine driven electric generator sets and IC engine driven water pumps and equipment components for gas dehydration units, gas-oil separators, free water knockouts, iron sponge units, production tank batteries and natural gas liquids separation plants used only for emergency replacement or standby services provided that:

  1. There will be no increase in emissions resulting from the operation.
  2. If not previously permitted the emissions meet the applicable emission abatement and emission rate requirements of Condition (2) of Standard Exemption No. 6 or Standard Exemption Nos. 63, 64, 66, 79, 87, 88 or 89.
  3. Notification requirements of Standard Exemption Nos. 6, 63 and 89 are met.
  4. Replacement of equipment components at permitted facilities must comply with permit amendment or permit revision procedures.

6. Gas or liquid fuel fired stationary internal combustion engines or gas turbines, provided that all proposed engines and turbines satisfy the following conditions:

1. Within 10 days after construction of the facility begins, it shall be registered with Form PI-7, including applicable information demonstrating compliance with (2) below and information concerning the air quality in the area of the proposed facility. [See (2) and (3) below]. Engines smaller than 240 horsepower need not be registered.
2. The emissions of NO x (NO plus NO 2) are no more than 5.0 grams per horsepower-hour for any such engine or turbine purchased new after September 23, 1982, and rated at 825 horsepower or more. Documentation of purchase date is required. For facilities which use catalytic converters to achieve compliance with the NO x limitation, the owner or operator shall submit and implement monitoring and/or testing plans sufficient to ensure that (a) the oxygen content in the stack exhaust is maintained at or lower than a value consistent with stoichiometric combustion and (b) catalyst degradation does not result in NO x emissions greater than 5.0 grams per horsepower-hour. Monitoring and testing results shall be made available to the Agency upon request.
3. There will be no existing or projected violations of any NAAQS in the area of the proposed facility. Compliance with this condition shall be demonstrated by one of the following three methods:

(a) Ambient sampling or dispersion modeling accepted or performed by the Executive Director. (For these purposes TACB models TEM-8 and TCM-2 and EPA Model ISC are acceptable, and all existing stationary sources within 1/4 mile of the proposed facilities and the proposed facilities must be considered.)

Unless otherwise documented by actual test data, the following NO 2/NO x ratios shall be used for modeling NO 2 NAAQS:

Device NOx Emis. Rate (Q) gm/hp-hr NO2/NOx Ratio
IC Engine Less than 2.0 0.4
IC Engine 2.0 thru 10.0 0.15 + (0.5/Q)
IC Engine Greater than 10.0 0.2
Turbines 0.25
IC Engine with catalytic converter 0.85

or (b) All existing and proposed engine and turbine exhaust is released to the atmosphere at a height at least twice the height of surrounding obstructions to wind flow. Buildings, open sided roof structures and covers are considered as obstructions.

or (c) The total emissions of NO x (NO plus NO 2) from all existing and proposed facilities on the property do not exceed the most restrictive of the following: (1) 250 tons per year, (2) the value (0.3125 D) tons per year, where D equals the shortest distance in feet from any existing or proposed stack to the nearest property line.

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