HomeMy WebLinkAboutBUCKING HORSE, THIRD FILING - MAJOR AMENDMENT - MJA140001 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTMay 7, 2014
City of Fort Collins
Stormwater Utility
700 Wood Street
Fort Collins, Colorado 80521
RE: Drainage Summary Letter for
Bucking Horse Filing 3
Dear Staff:
Northern Engineering is pleased to submit this Drainage Summary Letter for the proposed
Bucking Horse Filing 3 project for your review. The focus of this drainage summary letter is a
minor modification that is proposed to the current effective SWMM model reviewed and
approved with the Bucking Horse Filing 2 project (“Final Drainage Report for Bucking Horse
Filing 2”, December 17, 2012, by Northern Engineering).
The proposed project will modify basin percentage imperviousness for SWMM Basin 105. The
previously approved SWMM model showed this basin with a percent impervious value of 75%.
With the proposed site plan for Bucking Horse Filing 3, the averaged percent impervious value
will be reduced by 6% to a value of 69%. This will be beneficial for the storm system design and
detention pond design by creating a small decrease in both peak 100-year runoff rates and
volumes.
If you should have any questions as you review this, please feel free to contact us.
Sincerely,
NORTHERN ENGINEERING SERVICES, INC.
Aaron Cvar, PE
Project Engineer