This contract is for aerial surveying services, including aerial photography, LiDAR, and photogrammetry. The vendor, Psomas, will provide these services to the County of Orange for a period of five years. The contract includes a detailed scope of work, pricing, and payment terms. The vendor will be compensated on a time and materials basis, with hourly rates ranging from $125 to $245 per hour. The contract also includes provisions for reimbursement of expenses, invoicing, and payment terms.