DEPARTMENT OF ENVIRONMENTAL 

CONSERVATION

Standard Operating Permit Condition V –

Insignificant Emission Units

Permit Condition for Air Quality Permits

Adopted by Reference in 18 AAC 50.346

April 1, 2002

REVISED September 27, 2010
Standard Operating Permit Condition V – Insignificant Sources August 25, 2004

Revised September 27, 2010 2

Standard Operating Permit Condition V – Insignificant Emission Units 

Emission Unit Categories This Condition Applies to:

Emission Units

1. that are insignificant as defined in 18 AAC 50.326(d)-(i); 

2. that do not have control equipment for complying with an emissions standard or reducing 

emissions below a threshold in 18 AAC 50.326(e); and 

3. for which the department has not included monitoring, record keeping, or reporting in 

another condition of the permit to ensure compliance with an emission standard other 

than 18 AAC 50.110. 

Standard permit condition V will be used in any operating permit unless the Department 

determines that emission unit or stationary source specific conditions more adequately meet the 

requirements of 18 AAC 50. 

Permit Wording: 

1. For EU ID(s) < include emission unit identification for any insignificant emission units listed 

in the permit that qualify for this condition> listed in Table A and for emission units at the 

stationary source that are insignificant as defined in 18 AAC 50.326(d)-(i) that are not listed 

in this permit, the following apply:

1.1 The Permittee shall not cause or allow visible emissions, excluding condensed water 

vapor, emitted from an industrial process or fuel-burning equipment, or an incinerator 

to reduce visibility through the exhaust effluent by more than 20 percent averaged over 

any six consecutive minutes.

[18 AAC 50.050(a) & 50.055(a)(1)]

1.2 The Permittee shall not cause or allow particulate matter emitted from an industrial 

process or fuel-burning equipment to exceed 0.05 grains per cubic foot of exhaust gas 

corrected to standard conditions and averaged over three hours.

[18 AAC 50.055(b)(1)]

1.3 The Permittee shall not cause or allow sulfur compound emissions, expressed as SO2, 

from an industrial process or fuel-burning equipment, to exceed 500 ppm averaged over 

three hours.

[18 AAC 50.055(c)]

1.4 General MR&R for Insignificant Emission Units

a. The Permittee shall submit the compliance certifications of Condition <insert 

reference to compliance certifications condition> based on reasonable inquiry[

FOR CONDITION V.1];

b. The Permittee shall comply with the requirements of Condition <insert cross 

reference to Air Pollution Prohibited permit condition>;

c. The Permittee shall report in the operating report required by Condition <insert 

cross reference to Operating Reports standard permit condition> if an emission 

unit has historically been classified as insignificant because of actual emissions 
Standard Operating Permit Condition V – Insignificant Sources August 25, 2004

Revised September 27, 2010 3

less than the thresholds of 18 AAC 50.326(e) and current actual emissions 

become greater than any of those thresholds; and

d. No other monitoring, recordkeeping or reporting is required, except as provided in 

Conditions <refer to condition(s) that state the MR&R required for EU(s) subject 

to operating limits>.

[18 AAC 50.346(b)(4)]

The following apply to this standard permit condition: 

1. Standard permit condition V will be used with conditions that reiterate the emission 

standards of 18 AAC 50.055 as they apply to insignificant sources (see Conditions 

V.1.1 - 1.3). 
Standard Operating Permit Condition V – Insignificant Sources August 25, 2004

Revised September 27, 2010 4

STATEMENT OF BASIS FOR INSIGNIFICANT EMISSION UNITS

Condition <insert Condition number>, Insignificant Emission Units

Legal Basis: The Permittee is required to meet state emission standards set out in 18 

AAC 50.050 and 18 AAC 50.055 for all industrial processes fuel-burning equipment, and 

incinerators regardless of size.

Factual Basis: The conditions re-iterate the emission standards and require 

compliance for insignificant emission units. The Permittee may not cause or allow their 

equipment to violate these standards. Insignificant emission units are not listed in the 

permit unless specific monitoring, recordkeeping and reporting are necessary to ensure 

compliance.

(Optional text) The Department finds that the insignificant units at this stationary source 

do not require specific monitoring, recordkeeping and reporting to ensure compliance 

under these conditions.

(Optional text) Condition V1.4(a) requires certification that the units did not exceed state 

emission standards during the previous year and did not emit any prohibited air pollution. 

For EU ID(s) < >, as long as they do not exceed the operational limits of their hours of 

operation as stated in Condition < refer to condition(s) that state pertinent operational 

limits>, they are considered insignificant emission units and no monitoring is required in 

accordance with Department Policy and Procedure No. AWQ 04.02.103, Topic # 3, 

10/8/04 for small emission units subject to operating limits.