Appendix_D_Wheatley_Reservoir_Bathy_NAVD88.pdf

This is a bathymetric survey appendix document prepared for Charles County, Maryland, in support of the Wheatley Dam Dredging Services procurement. The document contains technical survey data and bathymetric mapping information collected in late 2024 to identify sediment accumulation within the Wheatley Dam reservoir located at Gilbert Run Park (13140 Charles Street, Charlotte Hall, MD 20622). The County is soliciting sealed bids from qualified dredging firms to perform wet dredging, hauling, and sediment disposal or beneficial reuse services, with primary focus on the northern and eastern areas of the reservoir where bathymetric and sub-bottom profiling surveys identified significant sediment accumulation. The dredging scope is contingent upon cost per cubic yard and associated project tasks, with Charles County retaining the option to request post-dredging bathymetric survey data to document elevation changes. Prospective bidders are encouraged to review all project documents and drawings and conduct site visits during normal business hours prior to submission. The procurement timeline and specific bid due date are not disclosed in this appendix document; however, project execution must coordinate with park accessibility and operational activities given the reservoir's location within a public park.

No pricing information, contract award amounts, set-asides, incumbency status, or funding sources are documented in this bathymetric appendix. The technical survey data provided serves as supporting documentation to establish baseline conditions and sediment volumes for contractor cost estimation and bid preparation purposes.