The county government may negotiate with the proper authorities of the various cities and towns, and with private individuals or contractors within the County as to the establishment of public dumping areas open to the use of the general public, and further the county government may expend a sum not to exceed $75,000 as cost to the County in the purchase of land for said disposal or in the various contracts with the towns, cities and private individuals or contractors. The county government may tax the general public of Kent County annually to defray the cost and expenses of the public dumping areas.