Storm Drainage Draft.pdf

This document consists of engineering drawings and site plans for a stormwater drainage system project. The drawings depict a drainage infrastructure system centered on Northgate Road, featuring multiple catch basins (CB1 through CB9) connected by underground piping. The system includes existing and new drainage components, including existing 12-inch and 8-inch pipes, new 8-inch drainage pipe, and a 24-inch HDPE corrugated double-wall pipe. The site plan shows catch basin locations with finished grade elevations at 661 and 662 feet, invert elevations at 657 and 658 feet, and a new tent pad area with associated drainage provisions. The project involves both existing infrastructure modifications and new construction elements.

The detailed topographic survey overlays and cross-sectional elevation profiles on page 2 and 3 provide precise ground elevation data, spot elevations, and ditch bottom measurements throughout the project area, with elevations ranging from approximately 659 to 665 feet. The drawings indicate connections to existing storm pipe infrastructure and include provisions for a gate/sluice valve on the south inlet of CB9 to control drainage flow. The plan encompasses drainage from building gutters and includes existing drainage infrastructure that will be integrated or modified as part of this stormwater management project.