If a district experiences an emergency condition that may create a serious health hazard or unreasonable economic loss to the district that requires immediate corrective action, the district may negotiate limited duration contracts to make the necessary repairs. The district shall submit to the executive director details describing the specific serious health hazard or unreasonable economic loss as soon as practicable following the issuance of the contracts. Whenever possible, the district should obtain prior approval of the executive director before authorizing the contract, but failure to obtain prior approval shall not void the contract. This section does not apply to special water authorities.