03 AG HCProject: Arbor Glen
Location: Chanhassen MN
Prepared for: Chanhassen
Prepared by: Sathre-Bergquist, Inc.
Date: June 4, 2015
Revised:
Subject: Volume Control
Required Infiltration - 1.1 inches = 0.092 ft 2590
Infiltration Time - 72 hours 3350
2590
Hardcover -1.85 acres = 80,389 sf 2843.33
Volume Requirement -1.1 in = 0.092 ft
(MNDot Drainage Manual -MCWD))
Infiltration Volume Required =80,389 sf x 0.092 ft = 7,369 cf
Property boundary
No. of Houses =21 Each
Ave. House Roof Area =2430 SF
No. of Driveways =21
Driveway Area =320 SF 6720
Area Of Street & Sidewalk =22639 SF
Topology Area sf
Total Hardcover Area = 1.85 Acres 80389 sf
Total Site Area= 8.00 Acres 348480 sf
Total Drainage Area ***= 6.10 Acres 265716 sf
Impervious Ratio = 30.3% Acres
*** Total Drainage Area does not include 2 Acres of Wetland