All proposals must be filled out in ink or typewritten and shall be legibly signed, giving the complete name and address of the Bidder. This page is where the public copy of bidder submissions are posted for public review.The Contractor shall employ only qualified supervisors and workers who are skilled in the performance of janitorial services. Personnel performing work. The City of Charlotte will accept sealed proposals for janitorial services for City. Hall, the Charlotte Fire and Police departments.