Region 6 Superfund Technical Assessment and Response Team (START) IV - Justification and Approval for The Environmental Protection Agency (EPA), Region 6 Superfund and Emergency Management Division (6... Region 6 Superfund Technical Assessment and Response Team (START) IV - Justification and Approval for The Environmental Protection Agency (EPA), Region 6 Superfund and Emergency Management Division (6SEMD) emergency bridge extension via modification to the existing single-award Indefinite Delivery/Indefinite Quantity (IDIQ) contract, EP-S5-17-02, awarded July 3, 2017, to Weston Solutions, LLC, and is scheduled to expire on January 2, 2023.