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AMEC-BCI was retained to provide professional engineering services in support of the City of Tampa’s waterway management projects. This special assessment program includes design of dredging projects at various locations throughout the City including but not limited to the Westshore area and Davis Islands. The projects are partially funded by the United State Environmental Protection Agency (EPA) thereby requiring a substantial environmental enhancement element. Individual projects will typically be performed in three phases: project delineation and survey, preliminary design and permitting, and plans preparation and construction support services.
The GIS tasks performed in support of these projects involved the following:
- Delineated areas that currently do not meet the desired level of service (LOS) of at least 3 feet to 5 feet of clearance at Mean Low Water (MWL) level within 15 canals in the Westshore area.
- Prepared an inventory list of property owners affected by the proposed dredging of the canals. The City will use the affected property inventory to determine participation in a Special Assessment Area.
- Researched and collected historical and existing GIS data relevant to the project design and permitting into a GeoDatabase. Data included property parcels, roads, utilities, shorelines, hydrological features, soils, land use, wetlands, topography, bathymetry, benthic, manatee, seagrass and mangrove distributions.
- Produced project area maps with aerial images, affected property parcel maps, existing habitat maps, sediment and water sample location maps, proposed sediment removal areas, proposed disposal site locations, restoration options maps and pre and post-construction bathymetry maps.
- Generated Digital Elevation Models (DEMs) derived from surveyed data for the Westshore Canals, Currituck canal and the restoration options. Created a proposed DEM for the Westshore canals with a navigable zone of approximately 20 feet that would be dredged to -5 feet MWL. Calculated cut and fill estimates using volumetric and spatial analysis for the Westshore Canals.
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