Part 6 of 7 Final Design Salem Stormwater Drawings_Addendum A.pdf

This document is a set of engineering drawings and profiles for proposed grading and stormwater management at the Quantico Urban Water Discharge project, prepared for the VA Office of Construction and Facilities Management by Mabbett (HDR/CH2M Hill) engineering firm.

The drawings present detailed cross-sectional profiles and elevation views of multiple stormwater infrastructure features and grading conditions across the project site. Key elements depicted include headwall structures, swales, storm structures, detention/storage areas, and connections between various stormwater management features labeled with station designations (such as CB-167 to FES-12, Headwall-1 to Headwall-3A, SDS-3 to SIS-3B, DMH-97 to CB-3, and numerous other profile relationships). Each profile includes horizontal and vertical scales, existing and proposed ground elevations, pipe inverts and slopes, structural details with design notes, and construction specifications. The drawings reference slope percentages, pipe diameters, materials designations, and dimensional requirements for grading and stormwater conveyance. Notes sections on each sheet address survey data, construction methodology, and compliance with applicable standards. The document represents the final design phase for comprehensive stormwater management and site grading improvements, with technical details necessary for construction bidding and implementation.