Colorado Revised Statutes Title 36. Natural Resources General § 36-20-114. Limits of permit

(1) Except for ground-based winter cloud seeding, a separate permit is required annually for each operation. If an operation is to be conducted under contract, a permit is required for each separate contract. Subject to the provisions of subsection (2) of this section, a permit may be granted for more than one year's duration. A permit for ground-based winter cloud seeding shall be issued for a period of five years. If a permit for a ground-based winter cloud seeding operation is renewed, the second permit shall have a duration of five years and any third or subsequent permit shall have a duration of ten years.

(2) The director may conditionally approve a project other than ground-based winter cloud seeding for a continuous time period in excess of one year's duration. Permits for such operations must be renewed annually. In approving the renewal of a permit for a continuous program, the director may waive the procedures for initial issuance of a permit in section 36-20-112 and, upon review and approval of the project's operational record, the director may issue a renewed permit for the operation to continue. In such instances, the fees imposed pursuant to section 36-20-113 may be prorated and paid on an annual basis.

(3) A project permit may be granted by the director without prior publication of notice by the operator in cases of fire, frost, hail, sleet, smog, fog, drought, or other emergency. In such cases, publication of notice shall be performed as soon as possible and shall not be subject to the time limits specified in this article or in article 4 of title 24, C.R.S.