A non-metallic mineral processing plant is defined as any combination of equipment used to grind or crush any non-metallic mineral, such as stone, sand, gravel, clay, rock, salt and vermiculite. The term includes all equipment used in conjunction with the grinding or crushing equipment to dry, mix, convey, size, or blend the processed material.

Rock Crushing Plants

Rock Crushing Plants

What emission limits apply to rock crushing plants?

For rock crushing plants that fall below the capacity thresholds listed above, the visible emissions limit is 20 percent opacity, averaged over a continuous six-minute period.

What is the process for obtaining coverage under the Permit-by-Notification?

The application for a Permit-by-Notification shall contain the information listed in Env-A 2806.04. The application will need to include general information on the plant and the owner or operator, as well as a detailed list of all equipment associated with the crushing plant. The owner or operator will also need to certify that the operation will comply with all applicable rules, including the federal rules governing non-metallic mineral processing plants codified under 40 CFR 60, subpart OOO. The application for an initial Permit-by-Notification shall be submitted to DES via postal mail.

What if there is a change in ownership of the plant?

Within 10 days of any change of the owner or operator, the new owner or operator shall submit the following information to DES via postal mail:

a) The name, mailing address, and daytime telephone number of the new owner or operator (and if available, an e-mail address and fax number). b) The Permit-by-Notification identification number. c) The physical location of the plant, including street address and municipality. d) Signature and certification pursuant to Env-A 2806.05.

What if a rock crushing plant is modified?

Any time an owner or operator makes a modification to a plant covered by a Permit-by-Notification, including replacing a piece of equipment, DES must be notified. Within 10 days of making the modification, the owner or operator must submit the following:

a) Information specified in 40 CFR 60.676(a), as applicable. b) Date on which testing of new equipment will be conducted. c) Signature and certification pursuant to Env-A 2806.05.

What if the rock crushing plant is moved?

Within 10 days after a portable plant covered by a Permit-by-Notification is moved to a different location, the owner or operator shall submit to DES and all affected towns a location change notice. The notice shall contain the following information:

a) The Permit-by-Notification identification number. b) The physical location from which the plant was moved. c) The physical location to which the plant was moved. d) Signature and certification pursuant to Env-A 2806.05.

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