This is a public service announcement for the folks in Colorado to check your annual APEN fee invoice as soon as possible. You have 30 days from the date of the invoice (usually dated late February) to request changes to your annual fee if you find that the emissions in your invoice are wrong. Let me know if you have any questions about your invoice since I’ve had a few conversations with the CDPHE about my client’s invoices and can probably provide some insight. Also, if you found errors but already paid, reach out to me and I’ll send you the email of the person at CDPHE who will go ahead and fix it before the next invoice is sent out.