Witrynaimpervious surfaces increase, stormwater runoff increases in quantity, speed, temperature, and pollutant load. When impervious surfaces reach 10–20% of local watershed area, surface runoff doubles and continues to increase until, at 100% impervious surface coverage, runoff is five times that WitrynaImpervious Area is any area where the surface coverage restricts water absorption, such as roofs or pavement. Each area type incurs a charge (“Gross Area charge” and “Impervious Area charge”), billed in 500 square foot units; the property’s monthly stormwater charge is the sum of the Gross Area charge and the Impervious Area …

Guidelines for Land Disturbing Activities

Witryna4 sty 2024 · Impermeable surfaces (like asphalt, concrete, and wood) are 100% impervious. Porous surfaces that allow the first one-half inch of non-concentrated … WitrynaPAGE 3 OF 3 raleighnc.gov Supplemental Plan Checklist Completed by City of Raleigh Staff REQUIREMENTS YES YES NO 1. The supplemental plan must be drawn to a … marco\u0027s pizza eastfield rd

Residential Plot Plan Checklist

WitrynaThe location, type and relevant dimensions and capacities of storm water management structures, associated easements and other devices. All existing and proposed impervious surfaces clearly itemized and listed in square feet and as a percentage of the net lot size. This can be shown on the site plan or an attached impervious calculation … Witryna3 mar 2024 · You can now use a variety of features to retain or detain stormwater when developing streets and residential lots. The lots must have 24 percent impervious … WitrynaThe location, type and relevant dimensions and capacities of storm water management structures, associated easements and other devices. All existing and proposed impervious surfaces clearly itemized and listed in square feet and as a percentage of the net lot size. This can be shown on the site plan or an attached impervious calculation … ctrl i command