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Report grain handling activities, including receiving, shipping, storage, cleaning, milling, grinding, handling (headhouse, elevators, conveyors), drying, flaking, or cooling.
Use this form for various development activities including excavation, grading, paving, etc.
You don't need to submit this form for projects fewer than 25 acres and less than six months. This form is not for sources that will operate for an indefinite period.
Guidance document for land development APEN.
Use the Crushers and screens APEN: Form APCD-221 to report crushing, screening, or other equipment operating at the site.
FAQ for updated landfill rules under Emission Guidelines Cf and New Source Performance Standards XXX.Design capacity reporting form.
4. Mail your complete application and payment to:
Colorado Department of Public Health & Environment
4300 Cherry Creek Drive South Denver, CO 80246-1530
Pay the APEN filing fee for each APEN submitted. More information about our fee structure is on our emissions and permitting fees page.