Project Name: Discharge Point: Channel Protection Standard Waiver Worksheet Fill out this worksheet for each discharge point in which use of this waiver is sought. Channel Protection Standard (CPV) Waiver (check only one): 1. A site the pre-routed, post-development discharge from the 1-year, 24-hour storm event is less than 2 cubic feet per second (cfs). Enter the total pre-routed post-development stormwater discharge rate (cfs): Guidance: post development discharge” means the runoff after development, including “Pre-routed conveyance, but without STPs. Curve Numbers should not be adjusted based on TV credit from Tier 1 practices. When examining whether or not the site qualifies for this waiver, off-site runoff does not need to be considered, however the overall common plan of development shall be considered. Please attach the runoff calculations/hydrologic modeling for the pre-routed, post-development during the 1-year, 24-hour storm event. 2. A site with a direct discharge to waters with a drainage area to or greater than 10 square miles and that is less than 5% of the watershed area at the site’s upstream boundary. Name of Water at Discharge Point: Drainage Area of Water at Discharge Point (square miles): For a project that has more than one discharge point and that discharges to different receiving waters, waiver eligibility shall be determined on a receiving water” basis. Receiving waters are considered separate if the drainage area at “per their downstream point of confluence is greater than 10 square miles. For example, if discharge point S/N 001 discharges directly to the Winooski River (drainage area of greater than 10 square miles), but discharge point S/N 002 discharges directly to a small tributary of the Winooski River, then S/N 001 could be waived from the Channel Protection Standard using Waiver 2, but S/N 002 could not. However S/N 002 may still be eligible for Waiver 1.
Project Name: Discharge Point: Channel Protection Standard Waiver Worksheet Fill out this worksheet for each discharge point in which use of this waiver is sought. Channel Protection Standard (CPV) Waiver (check only one): 1. A site the pre-routed, post-development discharge from the 1-year, 24-hour storm event is less than 2 cubic feet per second (cfs). Enter the total pre-routed post-development stormwater discharge rate (cfs): Guidance: “Pre-routed post development discharge” means the runoff after development, including conveyance, but without STPs. Curve Numbers should not be adjusted based on TV credit from Tier 1 practices. When examining whether or not the site qualifies for this waiver, off-site runoff does not need to be considered, however the overall common plan of development shall be considered. Please attach the runoff calculations/hydrologic modeling for the pre-routed, post-development during the 1-year, 24-hour storm event. 2. A site with a direct discharge to waters with a drainage area to or greater than 10 square miles and that is less than 5% of the watershed area at the site’s upstream boundary. Name of Water at Discharge Point: Drainage Area of Water at Discharge Point (square miles): For a project that has more than one discharge point and that discharges to different receiving waters, waiver eligibility shall be determined on a “per receiving water” basis. Receiving waters are considered separate if the drainage area at their downstream point of confluence is greater than 10 square miles. For example, if discharge point S/N 001 discharges directly to the Winooski River (drainage area of greater than 10 square miles), but discharge point S/N 002 discharges directly to a small tributary of the Winooski River, then S/N 001 could be waived from the Channel Protection Standard using Waiver 2, but S/N 002 could not. However S/N 002 may still be eligible for Waiver 1.
CPv%20Waiver%20Worksheet_2017.docx