Please submit two (2) original hard-copies (both with an identical copy saved to a non-password protected flash drive) of your proposal response in a sealed envelope that is clearly marked with the Request for Proposal (RFP) information listed above. Mail or hand-carry all proposals to Douglas County Government, Finance Department, Purchasing Division, 100 Third Street, Suite 130, Castle Rock, Colorado 80104, prior to the proposal due date and time. Electronic and/or fax proposal responses will not be accepted. It is the sole responsibility of the respondent to see that their proposal response is received on time. Proposals will not be considered which are received after the time stated, and any proposals so received will be returned unopened. If closure of Douglas County buildings occurs on the proposal due date, proposals must then be delivered to the Purchasing Division on the following business day before 12 noon.