Appendix_E_Wheatley_Reservoir_Bathy_Contours_NAVD88.pdf

This document is a bathymetric contour map appendix prepared for Charles County, Maryland in support of the Wheatley Dam Dredging Services procurement. The file presents survey data from bathymetric and sub-bottom profiling surveys conducted in late 2024 at Wheatley Dam Reservoir located at Gilbert Run Park (13140 Charles Street, Charlotte Hall, MD 20622). The project requires qualified dredging contractors to provide wet dredging, hauling, and sediment disposal or beneficial reuse services within defined reservoir areas, with the northern and eastern sections identified as priority zones for an initial dredging event. The scope of work includes optional post-dredging bathymetric survey services to document elevation changes following completion of dredging activities. Contractors are encouraged to review all project documents and conduct site visits during normal business hours prior to bid submission. The project timeline is constrained by the reservoir's location within a public park, requiring that dredging activities be coordinated with park accessibility and programming schedules.

The actual volumes of sediment to be dredged will be determined based on contractor pricing per cubic yard and the cost-effectiveness of associated project tasks. This variable-scope approach allows Charles County flexibility in determining the final extent of work based on competitive bidding. No specific contract award amount, funding sources, or set-aside provisions are detailed within this bathymetric appendix; however, project funding is anticipated through Charles County resources. The document serves as a critical technical reference for bidders to assess site conditions and sediment accumulation patterns when developing cost proposals and project methodologies.