The District of Columbia ("District") Department of General Services ("Department" or "DGS") is issuing this Request for Proposal ("RFP") to solicit Contractors ("Contractor or Consultant") to provide the following Third Party Quality Assurance services:

(a) Category 1 – Commissioning Services for LEED Certification

(b) Category 2 – Construction Materials Testing (Special Inspection Services)

(c) Category 3 – Third Party Plan Review Services