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
General ACDP
Autobody repair or painting shops

Basic ACDP

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

* Portland AQMA only

​Boilers

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
General ACDP
Clay manufacturing ≥ 50 tpy

General ACDP

(≥ 50 tpy)

Coffee roaster ≥ 30 tpy

General ACDP

(≥ 30 tpy)

Crematories

Basic ACDP

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

General ACDP

​Decorative chrome electroplaters

General ACDP

Degreasers – all

General ACDP

​Dry cleaners

General ACDP

Electric power generators

General ACDP

Gasoline dispensing facilities

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

General ACDP

(≥ 10,000 tpy)

Hard chrome electroplaters

General ACDP

Hospital ethylene oxide sterilizers

General ACDP

Metal fabrication and finishing

General ACDP

Paint and allied product manufacturing

General ACDP

Paint stripping

General ACDP

Plating and polishing

General ACDP

Prepared feeds/cereal/flour
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

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

​
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

General ACDP

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

Seed cleaning ≥ 5,000 tpy

General ACDP

(≥ 5,000 tpy)

Surface coating

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

General ACDP