HomeMy Public PortalAboutExhibit MSD 61B - MSD Combined Sewer Projects Prioritization System Worksheet 2/6/2012 1 of 2
MSD Combined Sewer Projects Prioritization System
Benefit Points Allocation Schedule
PROJECT NAME:DATE:
PROBLEM SOLVED CATEGORY
Chronic
(<=2-Yr)
Flooding
Frequent
(>2<=10-Yr)
Flooding
Infrequent
(>10<=20-Yr)
Flooding
Points per CategoryNo. Lots AffectedPoints per CategoryNo. Lots AffectedPoints per CategoryNo. Lots Affected1.1.1. Structure Flooding
Habitable 1st floor, residential; includes spaces with
mechanical equipment (1 lot per structure)
Address:
Building Backup (1 lot per structure)
Address:
Basement Flooding from Overland (1 lot per structure)
Address:Industrial, office, commercial and warehouse
(1 lot per 2,500 sf of floor space flooded)
Address:
Attached Garage (1 lot per structure)
Address:
Misc. structures including patio/decks, pools, sheds, tennis courts, detached garages, etc.(1 lot per structure)
Address:Yard Flooding (1 per lot)
Address:
1.1.2 Structure Flooding, Recurrence Frequency Reduced*
*If proposed project moves any of the above problems from
chronic to frequent, chronic to infrequent or from frequent to infrequent but does not achieve a 20-year Level of Service,
use the point values below instead of those above Points per CategoryNo. Lots AffectedPoints per CategoryNo. Lots AffectedPoints per CategoryNo. Lots AffectedHabitable 1st floor, residential; includes spaces with
mechanical equipment (1 lot per structure)
Address:
Building Backup (1 lot per structure)
Address:
Basement Flooding from Overland (1 lot per structure)
Address:Industrial, office, commercial and warehouse
(1 lot per 2,500 sf of floor space flooded)
Address:
Attached Garage (1 lot per structure)
Address:
1.1.3.Roadway Flooding (allocate 1 lot per 250' of roadway
impacted & 2 lots per intersection impacted)
Emergency Access restricted (>12" water over only access
route to habitable structure), pts per structure
Address:
Traffic obstruction (> 6" of water) on arterial street
Address:Traffic obstruction (> 6" of water) on collector street
Address:
Traffic obstruction (> 6" of water) on residential street/alley
Address:
Ponding (per ponding area)
Address:1.2 Yard Erosion (1 per lot)
Address:TOTAL PROBLEM POINTS
NOTE:1. Problem points are awarded only for those problems solved by the proposed solution.
2. Condos/apartments to be assigned points on a per-family-impacted basis
3. For Buyout/Relocation projects: the Total Problem Points = Total Benefit Points. (Only use page 1 of this form to assign points,
then proceed to the bottom of page 2 to enter the total cost.
100 75 10
150
50
200 100
3570
Frequent to
infrequent
170
235175
150
125
125
115
100 Total Points300 225
200
350 250 100
85
1.1 Flooding200
250
50 35
300
200
Chronic to
frequent
Chronic to
infrequent
21.0 Combined Sewer/Overland FlowNo. Lots:
6
20 10
2
100 75 40
20
10
70
No. Ponds:Points/pond:
5
8 5 1
3040
Note: Problem points are awarded only for those problems solved by the proposed solution.
5
70
Points/lot:10
2/6/2012 2 of 2
MSD Combined Sewer Projects Prioritization System
Benefit Points Allocation Schedule
PROJECT NAME:DATE:
CONTINUED:Total Points2.1. Reduction of flowrate to combined sewer (retention/detention)Max points:1000
2.3. Combines smaller projects into regional solution (see note)100
3.1. Project Includes BMP's/Green Infrastructure:No. Units Points per Unit
Bioswales
Forebays
Wet Ponds
Wetlands
Bioretention
Rain Gardens
Rain Barrels
Microdetention
Reduction of impervious area
3.2. Eliminates combined sewer by full separation (project area in AC)
AC (enter total project area at left)
3.3 Includes soft separation of sewers (project area in AC)
AC (enter total project area at left)
4.1. Project replaces pipe(s) with known significant condition defects
4.2 Project increases level-of-service to adjacent properties 50
4.3. Recreational/Educational
TOTAL SOLUTION POINTS
TOTAL BENEFIT POINTS
NOTE: A regional solution combines several smaller projects into a watershed or subwatershed solution.
MSD Project
Project by Others
Yes = 100,
no = 0 pts
100 SF 10
0-20 AC
(5 pts/AC)
>20≤100 AC
(10 pts / AC)
>100 AC
(15 pts/AC)
EA 5
AC 50
Points per
Add'l Proj.:
100 SF 10
EA
Place "X" in one box below:
10
% reduction of peak
flowrate :
AC
AC
10
200
100
PER 100 LF
TOTAL COST IN THOUSANDS=
#DIV/0!BENEFIT/ COST RATIO= TOTAL POINTS/ TOTAL COST IN THOUSANDS=
0
>20≤100 AC
(10 pts / AC)
0
>100 AC
(15 pts/AC)
150 0 0Diameter <24 = 100
Diameter ≥24" = 500 ptsNo. Adjacent
Properties:
0-20 AC
(5 pts/AC)
Yes = 100,
No = 0 pts
4.0 MISC.SOLUTION BENEFIT CATEGORY
3.0 ENVIRONMENTAL / BMPS2.0 REGIONAL2.2. Does retention/detention in 2.1 occur in upper 1/3 of watershed?
No. Add'l
Projects:
1000 SF
5
Points per
property:
Diameter in inches:
0
0