If you appeal, your appeal must be submitted in writing on the official appeal form, signed by you or your representative, and received at the following address within 10 days of your receipt of notice or knowledge of the action: Colorado State Personnel Board/State Personnel Director, Attn: Appeals Processing, 1525 Sherman Street, 4th Floor, Denver, CO 80203. Services include engineering, design, renovations, and maintenance of building structures, electrical and mechanical systems, fire protection, HVAC/R, plumbing, keyless access, door operators, custodial services, waste and recycling, landscaping, and paving.