Specifications include, but are not limited to: Provide architectural/ engineering services to provide Total Maximum Daily Loads (TMDLs) for selected impaired streams in the Upper Elk River watershed and Eastern Panhandle area in West Virginia. The vendor must demonstrate an understanding of the TMDL program, through a description of a methodology to accomplish project goals and the following objectives: 2.1 Data Development It shall be the vendor’s responsibility to gather and assemble all relevant data as specified by the WVDEP to support the model setup and development, with details to be determined for each type of TMDL. The WVDEP shall generate recent and comprehensive water quality monitoring data for impaired waters and provide it to the vendor. The WVDEP will compile pollutant source information throughout the contract period. The vendor must be capable of data manipulations in Microsoft® Access, Microsoft Excel (or equivalent), and in ArcView shapefile formats in order to facilitate usage of WVDEP’s current databases. 2.1.1 Subwatershed Delineation In this project, the project watershed will be subdivided into “TMDL watersheds”. Further subdivision of the watersheds will be scaled to the extent and size of the impaired stream segments such that only one impaired stream AUID is contained in an individual subwatershed. The location of pre-TMDL monitoring stations shall also be considered. Subwatershed delineation will be structured as to conserve pollutants from upstream watersheds to downstream (receiving) watersheds and will adhere to topographic boundaries. WVDEP will provide a preliminary subwatershed delineation of the project watersheds that will contain ArcView ® shapefiles. The project will be developed in ArcView® 10.1 or more recent version to be determined at the kick-off meeting. The Vendor will confirm and verify these subwatersheds and make any needed edits up until the final subwatershed deliverable is approved. The Vendor will number the subwatersheds and notate the downstream connectivity.
