MMW Existing North Detention PondProject Information
Calculator Version: Version 2: June 2014
Project Name: MMW Existing North Detention Pond
User Name / Company Name: Cliff Buhman/Inspec
Date: 9-5-15
Project Description: Existing North Detention Pond constructed in 2003
Site Information
B Soils C Soils D Soils
CITYOFCHANHASSEPI
(acres)
(acres) (acres) (acres)
i3ECEIVED
Retention Requirement (inches):
1.1
Site's Zip Code:
55331
SEP 0 8 2015
Annual Rainfall (inches):
29.6
Phosphorus EMC (mg/1):
0.3
CHANHAASSEN PLANNINGWI
TSS EMC (mg/1):
54.5
3.65
Total Site Area
Total Area (acres)
14.39
Land Cover A Soils B Soils C Soils D Soils Total
(acres) (acres) (acres) (acres) (acres)
Forest/Open Space - Undisturbed, protected 0
forest/open space or reforested land
Managed Turf - disturbed, graded for yards or 10.74 10.74
other turf to be mowed/managed
Impervious Area (acres) 3.65
Total Area (acres) 14.39
Site Areas Routed to BMPs
Land Cover A Soils
B Soils C Soils D Soils
Total
(acres)
(acres) (acres) (acres)
(acres)
Forest/Open Space - Undisturbed, protected
forest/open space or reforested land
0
Managed Turf - disturbed, graded for yards or
other turf to be mowed/managed
10.74
10.74
Impervious Area (acres)
3.65
Total Area (acres)
14.39
Summary Information
Performance Goal Requirement
Performance goal volume retention requirement: 14574 ft3
Volume removed by BMPs towards performance goal: ft3
Percent volume removed towards performance goal %
Annual Volume and Pollutant Load Reductions
Post development annual runoff volume
13.6586
acre -ft
Annual runoff volume removed by BMPs:
0
acre -ft
Percent annual runoff volume removed:
0
%
Post development annual particulate P load:
6.13
lbs
Annual particulate P removed by BMPs:
3.8
lbs
Post development annual dissolved P load:
5.02
lbs
Annual dissolved P removed by BMPs:
0
lbs
Percent annual total phosphorus removed:
34
%
Post development annual TSS load:
2025
lbs
Annual TSS removed by BMPs:
1215
lbs
Percent annual TSS removed:
60
%
BMP Summary
De.i......�...n r �l c.
Annual Vnluma Summary
BMP Volume Volume Volume
Volume
Percent
BMP Name
Capacity Recieved Retained
Outflow
Retained
Volume
(ft3) (ft3) (ft3)
(ft3)
(%)
1 - Constructed stormwater pond
0 14574 0
14574
0
Annual Vnluma Summary
Dawlnldafn Dhnmhnn,c cummam
Load From Load From
Volume
Outflow
Percent
BMP Name
Volume
From Volume
Volume
Percent
BMP Name
From Direct
Upstream Retained
outflow
Retained
Watershed
BMPs (acre -ft)
(acre -ft)
(%)
1 - Constructed stormwater pond
(acre -ft)
(acre -ft)
2.33
62
1 - Constructed stormwater pond
13.6586
0 0
13.6586
0
Dawlnldafn Dhnmhnn,c cummam
Load From Load From
Load
Outflow
Percent
BMP Name
Direct Upstream
Retained
Load
Retained
Watershed BMPs
(lbs)
(lbs)
(%)
(lbs) (lbs)
1 - Constructed stormwater pond
6.13 0
3.8
2.33
62
Dissolved Phosphorus Summary
TSS Summary
Load From
Load From
Load From
Direct
Load
Upstream
Outflow
Direct
Upstream
Load
Outflow
Percent
BMP Name
(lbs) (lbs)
(lbs)
Retained
Load
Retained
810
Watershed
BMPs
(lbs)
(lbs)
(lbs)
(lbs)
(%)
1- Constructed stormwater pond
5.02
0
0
5.02
0
TSS Summary
Load From
Load From
Direct
Load
Upstream
Outflow
Percent
BMP Name
Watershed
BMPs Retained
Load
Retained
(lbs)
(lbs) (lbs)
(lbs)
(%)
1 - Constructed stormwater pond 2025
0 1215
810
60
BMP Schematic
1- Constructed s a.water
pood