Aggregate & Rock Crushing Operations

Aggregate and rock crushing operations involve the handling and processing of nonmetallic mineral products for the construction industries.  Nonmetallic mineral products are quarried or mined and are then transported to the processing plant for further classification and/or further size reduction.  In addition, some recycled aggregate products (such as concrete and asphaltic concrete) are also processed in these plants.  The processing of sand and gravel for a specific market involves the use of different combinations of washers, screens, and classifiers to segregate particle sizes; crushers to reduce oversized material; and storage and loading facilities.  The various types of equipment used in these plants include: hoppers, belt conveyors, screens, scrubbers, pumps, storage bins, crushers, jigs, screws, front end loaders, scrapers, trucks, engines, and generators.

Who Needs a Permit?

  • Any aggregate and rock crushing operation which would emit any pollutant, without the benefit of an air pollution control device, greater than or equal to 2 pounds in any 24 hours period.
  • Equipment registered under CARB's Portable Equipment Registration Program is not required to have a permit unless it is being operated as part of a stationary source as determined by the Monterey Bay Air Resources District (MBARD).

Permit Fees 

New Installations:  

Aggregate and Rock Crushing operations are required to submit a one-time NEW APPLICATION fee for applying Authority to Construct/Permit to Operate (Form 400-General Application Fee Determination Sheet and Rule 300 District Fees).

Modifications:

For modifications resulting in any physical change or change in method of operation shall pay the MODIFICATION fee specified in Rule 300.

Baghouses and Internal Combustion Engines: 

When an aggregate and rock crushing process is permitted with a baghouse or an internal combustion engine, a separate application for Authority to Construct is required for each baghouse and each engine over 50 horsepower. 

Permit Application Completeness Determination

An application will not be accepted for processing until it is deemed complete. The following will be required in order for the Monterey Bay Air Resources District (MBARD) to make a completeness determination:

Documents/Forms

Permit Application Forms

Form 1-ATC-PTO ApplicationForm 400-General Application Fee Determination SheetAggregate and Rock Crushing/Screening Operations Supplemental Information Form

Related Rules

Rules

Rule 200 PERMITS REQUIRED

Rule 201 SOURCES NOT REQUIRING PERMITS

Rule 207 REVIEW OF NEW OR MODIFIED SOURCES

Rule 221 FEDERAL PREVENTION OF SIGNIFICANT DETERIORATION

Rule 222 FEDERAL MINOR SOURCES REVIEW

Rule 300 DISTRICT FEES

Rule 400 VISIBLE EMISSIONS

Rule 402 NUISANCES

Rule 403 PARTICULAR MATTER

Rule 440 MINERAL PROCESSING FACILITIES

Rule 436 TITLE V: GENERAL PROHIBITORY RULE

Rule 1000 PERMIT GUIDELINES AND REQUIREMENTS FOR SOURCES EMITTING TOXIC AIR CONTAMINANTS

Code of Federal Regulation, 40 CFR PART 60 SUBPART OOO, NSPS FOR NONMETALLIC MINERAL PROCESSING

California Health and Safety Code, Section 42301.6, Public Notice For Possible Source Of Air Hazardous Emissions Near School Prior To Approving Permit