Administrative Manual January 2025

Part 4. Appendices 4.5 Checklists

Construction Plan Approval for Infrastructure Projects Submittal Checklist For each listed item, check (√) if provided, write “n/a” if the feature does not exist or is not proposed, and write “w” if a waiver from the requirement is justified because it is unnecessary in the particular case to determine compliance with applicable regulations. Staff Use Only √, n/a, or w Application Submittal Requirement √, n/a, or w 8 Location, material, and width of existing and proposed sidewalk(s), greenway(s), and crosswalk(s) on the site` to be developed and on adjacent properties. 9 Location and width of existing and proposed public/private greenway(s) and access easement(s) 10 Location and width of existing and proposed rights-of-way and road widths, including road names and State Road (SR) number 11 Location and width of existing and proposed median(s) (Measured from back of curb) F Grading and Drainage Plan 1 An overall drainage and grading plan shall be provided showing existing and proposed contours. 1% minimum slope impervious areas, 2% minimum slope pervious areas. 2 Stormwater Layout Design • Location and dimensions of pipes, culverts, and other storm drain system elements • Stormwater Table- drainage structure ID, rim/grate, pipe diameter, material, slope, inlet and outlet inverts, structure type, drainage area and flow into the pipe structure • Public drainage easements for all pipes collecting water from public right-of-ways • Any extensions of storm drain outfalls across adjoining property and any private drainage easements needed to ensure discharge into natural watercourse 3 Stormwater Quality/Quantity Best Management Practices (BMPs) • Each BMP shall be on an individual plan sheet with associated BMP specific plan & profile/section views, and all applicable construction details • Include a table of pertinent design parameters with columns indicating Existing/Required, Design/Provided, and As-Built columns including, but not limited to: • Drainage Area (sf) • Surface Area of BMP (sf) (per BMP Manual requirements) • Land use Areas (sf) (Impervious, Open Space, Woodlands, etc.) • Design Storm Flows (Q 1 , Q 2 , Q 10 , Q 25 & Q 100 ) • Design Storm Water Surface Elevations • Free Board • Other pertinent BMP specific parameters • Table of maximum allowable impervious area proposed for each lot/outparcel 4 Grading/Drainage plans • Plan-Drainage structure ID, rim/grate, inlet and outlet inverts, pipe diameter, material and slope • One (1) foot contour lines • Spot elevations along accessible routes, ramps, parking stalls, building entrances, corners, curb/pavement corners and grade changes, high points, tie-in points, swales, etc. • Location of all existing and proposed utilities (screened), and blow-up of utility conflicts • All existing and proposed easements • FEMA 100-year floodplain and floodway boundaries including FIRM number • Surface waters (show & label top of bank) & wetlands • Location, width, and type of each riparian buffer encroaching within the site measured from the top of the stream bank • Show all building roof leaders G Utility Plans 1 Property lines distinctly and accurately represented. 2 Fire flow for building or project. 3 General – This information may be incorporated from other sheets within the construction plan submittal set.

• Add following note to each Utility Plan sheet: “All Town of Cary utility construction shall be performed in accordance with Town of Cary Standard Specifications and Details in effect at time of utility permitting.” • Phased projects have unique requirements, including individual permit requirements. See subsequent section: Phased Plan Submittals

Morrisville, NC

May 29, 2020

Administrative Manual

Page 42