Additional Clearwell Storage. URS will design additional clearwell storage to meet the CT requirements and to provide the City with flexibility in plant operations. URS will design a prestressed concrete (DYK or similar) or aboveground steel circular with appurtenances to obtain the required CT. In lieu of the Clearwell, URS will design a new pipeline to obtain the required CT. Selection between Clearwell vs. Pipeline design for CT requirements will be made by City, with a URS recommendation and input, during preliminary design.