HomeMy Public PortalAboutExhibit MSD 30K - Prioritization WorksheetMSD Stormwater Projects Prioritization System
Revised Benefit Points Allocation Schedule
PROJECT NAME:DATE:
Chronic
(<=2-Yr)
Flooding
Frequent
(>2<=15-Yr)
Flooding
Infrequent
(>15-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:
Basement (1 lot per structure)
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:
Industrial, office, commercial and warehouse
(1 lot per 2,500 sf of floor space flooded)
Address:
Yard Flooding (1 per lot)
Address:
1.1.2.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
Address:
1.2.1.Threatening Structure
(Ratio=Height of bank / distance from structure)Pts. for Ratio > 0.70No. LotsPts. for Ratio 0.36 - 0.70No. LotsPts. for Ratio 0.15- 0.35 No. LotsHabitable structures, residential (1 lot per structure)
Address:
Misc structures including pools, patio/decks, sheds, tennis
courts, detached garages, etc.(1 lot per structure)
Address:
Industrial, office, commercial and warehouse
(1 lot per structure)
Address:
1.2.2.No. of lots (from 1.2.1) on outside of bend lots
1.2.3.Threatening Roadway (allocate 1 lot per 250' of roadway
impacted & 2 lots per intersection impacted)Pts. for Ratio > 0.70No. LotsPts. for Ratio 0.36 - 0.70No. LotsPts. for Ratio 0.15- 0.35 No. LotsArterial Road:
Address:
Collector Road:
Address:
Residential Road:
Address:1.0 STREAM10 points per lot
300 Total Points1.1. FLOODING1.2. EROSIONPROBLEM SOLVED CATEGORY
15
150 25
100 50
200 100
8
50 25 4
10 5 0
300
200 100
25150
15
50 25 4
10 5 1
25
300 200
212
50
150 100 25
75 50 12
300
35 25
50200
6
20 12 3
Note: Problem points are awarded only for those problems solved by the proposed solution.
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MSD Stormwater Projects Prioritization System
Revised Benefit Points Allocation Schedule
PROJECT NAME:DATE:
CONTINUED:
Chronic
(<=2-Yr)
Flooding
Frequent
(>2<=15-Yr)
Flooding
Infrequent
(>15-Yr)
Flooding
Points per CategoryNo. Lots AffectedPoints per CategoryNo. Lots AffectedPoints per CategoryNo. Lots Affected2.1.1. Structure Flooding
Habitable 1st floor, residential; includes spaces with
mechanical equipment (1 lot per structure)*
Address:
Basement (1 lot per structure)*
Address:
Industrial, office, commercial and warehouse
(1 lot per 2,500 sf of floor space flooded)*
Address:
*If there is an existing public system and points are taken for
any of the 3 items above, add 50 points.
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:
2.1.2.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
Address:
Ponding (per ponding area)
Address:2.2.Moderate Risk Erosion of misc. structures
Address:
2.3.Yard Erosion (1 per lot)
Address:
2.4.Age of Existing System
Points for Age
Note: Problem points are awarded only for those problems solved by the proposed solution.TOTAL PROBLEM POINTS
PROBLEM SOLVED CATEGORY, CONT.2.1. FLOODING2.0 STORM SEWER / OVERLAND FLOWTotal PointsExisting System Y/N
26-50 yrs
(15 pts)
>50 yrs
(30 pts)
<25 yrs
(0 pts)
50 35
250 200 50
350
300 200
65250
100 75 25
12
50
200 150 25
10
50 35
06
6
25 15 2
No. Ponds:Points/pond:
10 6
No. Lots:
No. Lots:
1
Points/lot:
Points/lot:
5
20
10
Note: Problem points are awarded only for those problems solved by the
proposed solution.
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MSD Stormwater Projects Prioritization System
Revised Benefit Points Allocation Schedule
PROJECT NAME:DATE:
CONTINUED:
3.1. Reduction of flowrate leaving site Max points:1000
3.2. Combines smaller projects into regional solution (see note)50
4.1. Addresses pollutants:No. Units Points per Unit
Bioswales
Forebays
Wet Ponds
Wetlands
Biostabilization of banks (per bank)
Riffle Pool Complex
4.2. Eliminates combined sewer (per project)
4.3.
5.1. Ease of Implementation (No. of Easements)0-5 (20 pts)>15 (0 pts)Points for Easements
5.2. 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
200
100
Points per
Add'l Proj.:
10
10
10
100
Place "X" in one box below:
50
% reduction of
peak
flowrate :
AC
AC
PER 100 LF
No. Add'l
Projects:
10
SOLUTION BENEFIT CATEGORY
4.0 ENVIRONMENTAL / WATER QUALITY3.0 REGIONALEliminates inflow into sanitary system (1 each per basement
flooded, yard vent overtopped, street inlet or driveway drain
connected to sanitary/combined system, etc.)6-10 (10 pts)11-15 (5 pts)Yes = 100,
no = 0 pts5.0 MISC.BENEFIT/ COST RATIO= TOTAL POINTS/ TOTAL COST IN THOUSANDS=
AC
PER 100 LF
EA
EA
PER 100 LF
TOTAL COST IN THOUSANDS=
#DIV/0!
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