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Exhibit 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