Air Quality Permits

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Basic and General Air Contaminant Discharge Permits

Basic and General ACDPs are established for some of the most common industry types in Oregon. These permits follow the rules contained in OAR 340 Division 200 through 268. Any activity or source found on the list in Table 1, Part A of OAR 340-216-8010 must, at a minimum, obtain a Basic ACDP.
DEQ’s air permits vary in complexity. The most basic type of permit is a Basic Air Contaminant Discharge Permit (ACDP), followed by a General ACDP, then Simple ACDP, Standard ACDP, and then Title V (five) permits. Any facility may elect to obtain a higher level permit than is required, this can help clarify requirements for sources that are subject to multiple rules or have a variety of equipment subject to regulation.
All ACDP’s require a Land Use Compatibility Statement prior to permit issuance. This is because, by law, DEQ must ensure that an operation is complying with local land use jurisdiction prior to issuing a permit. Check with your local city or county planning section/division for further information.
  • Application Guidelines Document
    This document provides instructions to the owner/operator of a facility seeking an initial Air Contaminant Discharge Permit (ACDP), renewal of existing ACDP, or modification to an existing ACDP. These instructions identify the application forms and describe how the forms are to be used to prepare an application. 
  • Land Use Compatibility Statement

 Application and other forms

​Asphalt plants (GP-07)
General ACDP
Autobody repair or painting shops (BS-01)

Basic ACDP

Autobody repair or painting shops painting more than 25 automobiles in a year.*

* Portland AQMA only

​Boilers (GP-11 or BS-02)

Basic ACDP

Natural Gas and Propane Fired Boilers (with or without #2 diesel oil back-up(a)) of 10 or more MMBTU but less than 30 MMBTU/hr heat input constructed after June 9, 1989. (a) “back-up” means less than 10,000 gallons of fuel per year.

General ACDP
Oil fired ≥ 10 million Btu/hr and natural gas fired ≥ 30 million Btu/hr heat input.
Bulk gasoline plants (GP-17)
General ACDP
Clay manufacturing ≥ 50 tpy (GP-19)

General ACDP

(≥ 50 tpy)

Coffee roaster ≥ 30 tpy (GP-16)

General ACDP

(≥ 30 tpy)

Crematories (GP-12 or BS-04)

Basic ACDP

Crematory incinerators with less than 20 tons/yr. material input.

General ACDP

​Decorative chrome electroplaters (GP-02)

General ACDP

Degreasers – all (GP-05)

General ACDP

​Dry cleaners (GP-06)

General ACDP

Electric power generators (GP-18)

General ACDP

Gasoline dispensing facilities (GP-22 or GP-23)

General ACDP

Gasoline Dispensing Facilities - Stage I

Stage 1 Gasoline Dispensing Facility Calendar

Gasoline Dispensing Facilities - Stage II ​

Stage 2 Gasoline Dispensing Facility Calendar

Grain elevators ≥ 10,000 tpy (GP-13)

General ACDP

(≥ 10,000 tpy)

Hard chrome electroplaters (GP-01)

General ACDP

Hospital ethylene oxide sterilizers (GP-20)

General ACDP

Metal fabrication and finishing (GP-25 or GP-29)

General ACDP

Paint and allied product manufacturing (GP-30)

General ACDP

Paint stripping (GP-28)

General ACDP

Plating and polishing (GP-26)

General ACDP

Prepared feeds/cereal/flour (GP-14 or BS-05)
Basic ACDP
Prepared feeds for animals and fowl and associated grain elevators more than 1,000 tons/yr. but less than 10,000 tons per year throughput.

General ACDP

(≥ 10,000 tpy)

Ready-mix/concrete manufacturing (GP-09 or BS-03)

General ACDP

Basic ACDP
Concrete manufacturing including Redimix and CTB more than 5,000 but less than 25,000 cubic yards per year output.
 
​Rock crushers (GP-08 or BS-06)

​
Basic ACDP

Rock, concrete or asphalt crushing both portable and stationary more than 5,000 tons/yr. but less than 25,000 tons/yr. crushed.
 
General ACDP
(≥ 25,000 tpy)
 
​Sawmills/millwork ≥ 25,000 bd. ft. finished product/maximum 8 hour shift (GP-10)

General ACDP

(≥ 25,000 bd. ft. finished product/maximum 8 hour shift)

Seed cleaning ≥ 5,000 tpy (GP-15)

General ACDP

(≥ 5,000 tpy)

Surface coating (GP-27 or BS-07)

Basic ACDP

Surface coating operations whose actual or expected usage of coating materials is greater than 250 gallons per month, excluding sources that exclusively use non-VOC and non-HAP containing coatings (e.g. powder coating operations).

General ACDP

Wood preserving (GP-24)

General ACDP