The District of Columbia (“District”) Department of General Services (the “Department” or “DGS”) is  responsible for the day-to-day management of roofs for all DGS facilities. DGS has approximately 12.6 million square feet of roofs in its portfolio and thereby issuing this Request for Proposals (“RFP”) to engage a Consultant (the “Consultant” od “Contractor”) to implement roof maintenance services to ensure that Department properties’ roofs are properly maintained and managed for the purpose of increasing asset life and thereby decreasing capital costs, preventing leaks, remedying leaks promptly, facilitating the use of roof spaces to ensure environmental efficiency, and reducing stormwater run-off.