Appendix G. Alternative Solutions Details. Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G Alternative Solutions Details TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G1 Creek Improvements for Conveyance of the Regulatory Flow TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

Design of a 2-Stage Uniform Channel Low Flow Channel Design Flow 12.00 m 3 /s Slope 0.004 m/m Mannings 'n' 0.035 Side Slopes (H:V) 2.0 :1 Base Width 5.0 m Depth 0.50 m 8.9 Full Flow Area 3.00 m 2 Full Flow Wetted Perimeter 7.24 m Calculated Flow 3.06 m 3 /s Velocity 1.02 m/s Top Width 7.00 m Hydraulic Depth 0.43 m Froude Number 0.50 <= Overbank Depth <=Shelf Width=> Overbank Area Design Flow 43.00 m 3 /s Base Slope 0.004 m/m => Width <= Manning's 'n' 0.06 Low Flow Channel Side Slopes 2 :1 Low Flow Channel Width 5.0 m Low Flow Channel Depth 0.50 m Overbank Side Slopes 3 :1 Shelf Width 5.0 m Overbank Depth 1.50 m 2.3 Full Section Area 35.25 m 2 Full Section Wetted Perimeter 26.72 m Full Section Flow 45.34 m 3 /s Average Channel Velocity 1.29 m/s Total Channel Depth 2.00 m Channel Top Width 26.00 m Hydraulic Depth 1.36 m Froude Number 0.35 <= <= Base Depth <= Manning's Open Channel Flow - 2 Stage Channel.xls Sheet1 11/18/13 1 of 1

C D E A 8800 Dufferin Street, Suite 200 Vaughan, ON L4K 0C5... p: 905.738.5700 f: 905.738.0065 KROSNO CREEK DIVERSION PROJECT PROPERTY REQUIRED FOR CONVEYANCE OF THE REGULATORY FLOW PROJECT No. SCALE: 1:4000 DATE: SEPTEMBER 2013 DESIGNED BY: ET DRAWN BY: CAD CHECKED BY: SH CHECKED BY: 12150 FIGURE No. 4-1

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 Cost Estimate Reconstructed Channel to convey Regulatory Storm Approx 25 m top width plus buffers Item No. Spec. Code Item Description Unit Quantity Unit Price Total Notes 1 Property Acquisition LS 1.0 $ 14,200,000.00 $ 14,200,000.00 All property on one side of the existing channel is required. 46 properties required if channel is constructed to the east of the existing channel 2 Channel Reconstruction m 850.0 $ 2,500.00 $ 2,125,000.00 Including grading and landscape restoration 3 Bridges each 4.0 $ 1,000,000.00 $ 4,000,000.00 Bridges to span the channel at Bayly, Morden, Reytan and Alyssum 4 General Contingencies (20 %) LS 1 $ 4,065,000.00 $ 4,065,000.00 TOTAL COST $ 24,390,000.00

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G2 Enhanced Stormwater Management Controls TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Enhanced Stormwater Management Controls Downtown Pickering Intensification, 5 mm retention, 100 Year Post to Pre, where Pre is max 50% impervious Maximum Flow Rate Location Conduit Drainage Area (ha) 2 5 10 25 50 100 Hazel Highway 401 34_1 162.6 9.48 12.63 14.87 16.85 17.35 17.67 17.56 Bayly Street Weir Flow KC_CJ44_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.16 Culvert Flow KC_CJ44 9.36 12.31 14.44 16.50 17.21 17.70 17.75 Total Flow ADD 162.6 9.36 12.31 14.44 16.50 17.21 17.70 17.91 Downstream Bayly Street KC_CJ43 253.1 11.74 15.51 18.38 20.96 22.46 23.64 24.16 Morden Lane Weir Flow KC_CJ37_HC 0.00 0.65 3.27 5.67 7.49 9.06 10.46 Culvert Flow KC_CJ37 11.97 15.10 16.01 16.53 16.66 16.78 16.97 Total ADD 272.6 11.97 15.74 19.28 22.19 24.15 25.84 27.43 Reytan Boulevard Weir Flow KC_CJ29_HC 0.01 0.29 2.88 6.28 8.04 9.74 12.42 Culvert Flow KC_CJ29 11.65 13.68 14.65 14.94 15.05 15.11 15.28 Total ADD 286.3 11.66 13.97 17.53 21.22 23.09 24.85 27.70 Alyssum Street Weir Flow KC_CJ25_HC 0.05 1.99 5.63 10.88 13.39 15.85 20.35 Culvert Flow KC_CJ25 11.28 12.08 12.10 12.03 11.95 11.87 11.70 Total ADD 304.3 11.32 14.07 17.73 22.91 25.34 27.72 32.04 Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC 0.00 0.38 3.51 9.53 12.09 14.63 19.88 Culvert Flow KC_CJ20 11.39 13.49 13.49 13.41 13.38 13.34 13.28 Total ADD 321.8 11.39 13.87 16.99 22.94 25.47 27.98 33.17 Confluence with East Tributa KC_CA 459.7 15.88 21.38 26.54 33.50 38.96 44.72 47.54 Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ7 16.89 23.09 28.00 35.62 41.42 47.34 52.48 Total ADD 517.3 16.89 23.09 28.00 35.62 41.42 47.34 52.48 Outlet to Frenchman's Bay KC_CJ.4 654.4 15.93 20.48 23.97 29.13 32.39 35.52 60.90

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Enhanced Stormwater Management Controls Downtown Pickering Intensification, 5 mm retention, 100 Year Post to Pre, where Pre is max 50% impervious Maximum Hydraulic Grade Line (m) Location Node 2 5 10 25 50 100 Hazel Sandy Beach Road North Culvert - Downstream KC_J19 76.70 77.00 77.15 77.35 77.42 77.48 77.61 Sandy Beach Road North Culvert - Upstream KC_J20 77.08 77.50 77.64 77.76 77.80 77.84 77.88 Alyssum Street Culvert - Downstream KC_J24 77.16 77.56 77.71 77.89 77.95 78.02 78.13 Alyssum Street Culvert - Upstream KC_J25 77.88 78.08 78.17 78.25 78.28 78.31 78.35 Reytan Boulevard Culvert - Downstream KC_J28 77.91 78.09 78.18 78.27 78.30 78.33 78.37 Reytan Boulevard Culvert - Upstream KC_J29 78.62 78.92 79.08 79.17 79.21 79.24 79.28 Morden Lane Culvert - Downstream KC_J36 78.87 79.11 79.53 79.63 79.64 79.64 79.73 Morden Lane Culvert - Upstream KC_J37 79.91 80.35 80.50 80.59 80.63 80.66 80.68 Bayly Street Culvert - Downstream KC_J43 80.29 80.65 80.84 80.96 81.02 81.07 81.10 Bayly Street Culvert -Upstream KC_J44 80.91 81.30 81.55 81.80 81.90 81.96 82.04 Highway 401 / CNR Culverts - Downstream KC_J48 81.67 81.67 81.78 81.96 82.04 82.10 82.16 Highway 401 / CNR Culverts - Upstream 8 82.65 83.27 83.80 84.30 84.47 84.59 84.59 flood damages incurred

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Enhanced Stormwater Management Controls Downtown Pickering Intensification, 5 mm retention, 100 Year Post to Pre, where Pre is max 50% impervious Pickering Town Centre Storage Summary Storm Event Peak Flow to Storage Node Peak Flow from Storage Node Maximum Storage Volume Maximum Water Level 2 10.81 9.48 57 82.65 5 15.30 12.63 151 83.27 10 18.34 14.87 488 83.80 25 22.88 16.85 2047 84.30 50 26.41 17.35 4513 84.47 100 29.93 17.67 7118 84.59 Hazel 21.06 17.56 7027 84.59 Node / Conduit 8 8 8 8

Downtown SWM and Diversion Study TMIG Project 12150 Flood Damage Estimates Enhanced SWM Controls in Downtown Pickering Storm Event Buildings Impacted Flood Damages* 2 2 $70,900 5 6 $193,100 10 27 $825,300 25 58 $1,750,800 50 60 $1,802,100 100 62 $1,866,600 Regional 65 $1,963,500 Average Annual Damages Existing Average Annual Damages Reduction in Annual Flood Damages $239,401 $390,931 $151,530 * Damages Calculated as 30% of the Assessed Value of all Properties where buildings are partially or entirely within the flood plain

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G3 Culvert Improvements TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Culvert Upgrades Twin 3 m box culverts at Alyssum, Reytan and Morden Maximum Flow Rate Location Conduit Drainage Area (ha) 2 5 10 25 50 100 Hazel Highway 401 34_1 162.6 10.01 13.39 15.72 17.19 17.63 17.92 17.81 Bayly Street Weir Flow KC_CJ44_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ44 9.89 13.19 15.31 17.00 17.50 17.92 17.94 Total Flow ADD 162.6 9.89 13.19 15.31 17.00 17.50 17.92 17.94 Downstream Bayly Street KC_CJ43 253.1 12.90 17.36 20.21 22.98 24.69 26.14 25.31 Morden Lane Weir Flow KC_CJ37_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ37 13.48 18.12 21.16 24.51 26.61 28.31 27.77 Total ADD 272.6 13.48 18.12 21.16 24.51 26.61 28.31 27.77 Reytan Boulevard Weir Flow KC_CJ29_HC 0.00 0.00 0.00 0.01 0.05 0.14 0.31 Culvert Flow KC_CJ29 13.59 18.26 21.40 24.75 26.40 27.98 30.06 Total ADD 286.3 13.59 18.26 21.40 24.76 26.44 28.12 30.37 Alyssum Street Weir Flow KC_CJ25_HC 0.00 0.17 1.57 4.92 6.90 8.78 10.39 Culvert Flow KC_CJ25 13.31 18.10 20.02 20.52 20.68 20.74 20.18 Total ADD 304.3 13.31 18.27 21.59 25.44 27.58 29.52 30.57 Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC 0.00 5.57 9.88 14.57 16.85 19.43 21.91 Culvert Flow KC_CJ20 13.15 14.04 14.12 14.16 14.15 14.15 13.50 Total ADD 321.8 13.15 19.61 24.00 28.73 31.01 33.58 35.40 Confluence with East Tributa KC_CA 459.7 17.74 27.65 34.23 42.93 46.31 50.48 49.65 Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ7 18.80 28.61 35.23 43.26 48.04 52.86 54.79 Total ADD 517.3 18.80 28.61 35.23 43.26 48.04 52.86 54.79 Outlet to Frenchman's Bay KC_CJ.4 654.4 17.26 23.24 27.27 31.99 35.23 38.28 62.54

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Culvert Upgrades Twin 3 m box culverts at Alyssum, Reytan and Morden Maximum Hydraulic Grade Line (m) Location Node 2 5 10 25 50 100 Hazel Sandy Beach Road North Culvert - Downstream KC_J19 76.91 77.23 77.36 77.48 77.53 77.59 77.65 Sandy Beach Road North Culvert - Upstream KC_J20 77.39 77.69 77.77 77.83 77.86 77.88 77.90 Alyssum Street Culvert - Downstream KC_J24 77.43 77.73 77.83 77.91 77.95 77.98 78.01 Alyssum Street Culvert - Upstream KC_J25 77.54 77.93 78.07 78.15 78.19 78.21 78.23 Reytan Boulevard Culvert - Downstream KC_J28 77.61 77.95 78.08 78.18 78.21 78.24 78.26 Reytan Boulevard Culvert - Upstream KC_J29 77.86 78.24 78.43 78.62 78.73 78.82 78.93 Morden Lane Culvert - Downstream KC_J36 78.91 79.15 79.29 79.43 79.51 79.58 79.57 Morden Lane Culvert - Upstream KC_J37 79.19 79.51 79.69 79.88 80.01 80.16 80.13 Bayly Street Culvert - Downstream KC_J43 80.33 80.56 80.70 80.83 80.90 80.97 80.93 Bayly Street Culvert -Upstream KC_J44 80.97 81.34 81.58 81.78 81.85 81.90 81.92 Highway 401 / CNR Culverts - Downstream KC_J48 81.67 81.67 81.83 81.96 82.01 82.06 82.07 Highway 401 / CNR Culverts - Upstream 8 82.75 83.43 84.01 84.39 84.54 84.66 84.63 flood damages incurred

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Culvert Upgrades Twin 3 m box culverts at Alyssum, Reytan and Morden Pickering Town Centre Storage Summary Storm Event Peak Flow to Storage Node Peak Flow from Storage Node Maximum Storage Volume Maximum Water Level 2 11.45 10.01 67 82.75 5 16.14 13.39 221 83.43 10 19.57 15.72 711 84.01 25 24.61 17.19 3195 84.39 50 28.18 17.63 5991 84.54 100 31.48 17.92 8729 84.66 Hazel 21.55 17.81 8152 84.63 Node / Conduit 8 8 8 8

Downtown SWM and Diversion Study TMIG Project 12150 Flood Damage Estimates Culvert Upgrades (Alyssum, Reytan & Morden) Storm Event Buildings Impacted Flood Damages* 2 1 $35,600 5 2 $70,900 10 3 $100,000 25 4 $131,400 50 7 $222,500 100 8 $251,500 Regional 7 $222,500 Average Annual Damages Existing Average Annual Damages Reduction in Annual Flood Damages $46,271 $390,931 $344,660 * Damages Calculated as 30% of the Assessed Value of all Properties where buildings are partially or entirely within the flood plain

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 Cost Estimate Culvert Upgrades Twin 3.0 m x 1.8 m Concrete Box Culverts at Alyssum, Reytan and Morde Item No. Spec. Code Item Description Unit Quantity Unit Price Total Notes 1 2 x 3.0m x 1.8m Concrete Box Culvert Depth - Less than 5.0m (Morden Crossing) m 23.0 $ 12,000.00 $ 276,000.00 2 2 x 3.0m x 1.8m Concrete Box Culvert Depth - Less than 5.0m (Raytan Crossing) m 27.0 $ 12,000.00 $ 324,000.00 3 2 x 3.0m x 1.8m Concrete Box Culvert Depth - Less than 5.0m (Alyssum Crossing) m 23.0 $ 12,000.00 $ 276,000.00 4 Headwalls on upstream and downstream end of each culvert each 6.0 $ 30,000.00 $ 180,000.00 5 Utility Relocation, Traffic Control and General Contingencies (30 %) LS 1.0 $ 316,800.00 $ 316,800.00 TOTAL COST $ 1,372,800.00 Cost Estimates - 2013 09 06.xls

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G4 Diversion Alternatives TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

Potential Diversion Route Properties Route Route Description Route Length (m) Minimum Slope (m) Minimum Depth 1 (m) Maximum Pipe Size 2 Full Flow Capacity (m 3 /s) 3 1 Pickering Parkway, West to Pine Creek 770 0.30 % 3.5 2 @ 2.4 m diameter concrete pipes 4,5 27.1 2 Bayly Street, West to Pine Creek 750 0.15 % 2.7 1.8 m diameter concrete pipe 4 4.5 3 Bayly Street, East to Sandy Beach Road, south to Krosno Creek 1120 0.30 % 1.9 1.8 m wide x 0.9 m high concrete box 3.1 4 Morden Lane, south on Reytan Boulevard to Krosno Creek 480 0.30 % 2.1 2.4 m wide x 1.2 m high concrete box 6.6 5 Morden Lane, south on Krosno Boulevard, east on Alyssum to Krosno Creek 670 0.25 % 2.3 3.0 m wide x 1.5 m high concrete box 10.9 1 2 3 4 5 measured from existing ground to diversion invert Based on 0.6 m minimum structural cover as per Ontario Provincial Standard Specifications. This is a deviation from City of Pickering standards (1.8 m cover) Based on free flow conditions, ignoring tailwater elevation and potential surcharging Circular pipe is required for tunnelling under Liverpool Road Twin pipes as per FBSWMMP

1 - Pickering Parkway, West to Pine Creek A FUTURE OPTIONAL SWM POND LOCATION 2 - Bayly Street, West to Pine Creek 3 - Bayly Street, East to Sandy Beach Road, south to Krosno Creek C 4 - Morden Lane, South on Reytan Boulevard to Krosno Creek 5 - Morden Lane, South on Krosno Boulevard, West on Alyssum to Krosno Creek D E D 8800 Dufferin Street, Suite 200 Vaughan, ON L4K 0C5... p: 905.738.5700 f: 905.738.0065 KROSNO CREEK DIVERSION PROJECT POTENTIAL DIVERSION ROUTES PROJECT No. SCALE: 1:5000 DATE: SEPTEMBER 2013 DESIGNED BY: ET DRAWN BY: CAD CHECKED BY: SH CHECKED BY: 12150 FIGURE No. 4-2

Diversion Alignment 1: Pickering Parkway to Pine Creek Liverpool Road Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 2.4 m

Diversion Alignment 2: Bayly Street to Pine Creek Liverpool Road Average Pipe Slope: 0.15% Maximum Diversion Sewer Height: 1.8 m

Diversion Alignment 3: Bayly Street Sandy Beach Road Krosno Creek 85 84 Intersection of Bayly & Sandy Beach 83 82 81 80 79 78 77 76 75 0 200 400 600 800 1000 1200 Existing Ground Invert Obvert Min Cover Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 0.9 m

Diversion Alignment 4: Morden Lane Reytan Boulevard Krosno Creek 85 84 83 82 81 80 79 78 77 76 75 0 50 100 150 200 250 300 350 400 450 500 Invert Obvert Min Cover Existing Ground Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 1.2 m

Diversion Alignment 5: Morden Lane Krosno Boulevard Alyssum Street Krosno Creek 85 Intersection of Krosno Blvd & Reytan Intersection of Krosno Blvd & Alyssum 84 83 82 81 80 79 78 77 76 75 0 100 200 300 400 500 600 700 Existing Ground Invert Obvert Minimum Cover Average Pipe Slope: 0.25% Maximum Diversion Sewer Height: 1.5 m

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G5 Pickering Parkway Diversion to Pine Creek TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Pickering Parkway Diversion to Pine Creek Twin 2400 mm Diameter Sewers Maximum Flow Rate Location Conduit Drainage Area (ha) 2 5 10 25 50 100 Hazel Highway 401 34_1 162.6 12.14 13.07 13.59 14.25 14.81 15.80 12.77 Bayly Street Weir Flow KC_CJ44_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ44 11.69 12.26 12.70 13.51 14.24 15.10 12.76 Total Flow ADD 162.6 11.69 12.26 12.70 13.51 14.24 15.10 12.76 Downstream Bayly Street KC_CJ43 253.1 14.99 17.38 19.22 21.52 23.21 25.03 20.84 Morden Lane Weir Flow KC_CJ37_HC 0.30 1.94 3.82 6.73 8.71 10.83 7.15 Culvert Flow KC_CJ37 14.76 15.88 16.27 16.61 16.75 16.81 16.55 Total ADD 272.6 15.05 17.82 20.09 23.34 25.46 27.64 23.70 Reytan Boulevard Weir Flow KC_CJ29_HC 0.25 2.66 4.16 6.83 9.19 10.06 9.51 Culvert Flow KC_CJ29 13.46 14.38 14.77 14.98 15.10 15.40 14.94 Total ADD 286.3 13.71 17.05 18.93 21.81 24.29 25.46 24.45 Alyssum Street Weir Flow KC_CJ25_HC 1.56 4.00 7.83 11.89 15.22 15.76 16.69 Culvert Flow KC_CJ25 12.14 12.12 12.07 11.95 11.86 11.78 11.93 Total ADD 304.3 13.70 16.12 19.90 23.84 27.09 27.54 28.62 Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC 0.09 2.07 6.49 10.72 14.08 14.08 16.43 Culvert Flow KC_CJ20 13.43 13.57 13.64 13.60 13.59 13.58 13.55 Total ADD 321.8 13.53 15.65 20.13 24.32 27.68 27.66 29.98 Confluence with East Tributa KC_CA 459.7 17.96 23.69 30.59 38.00 43.41 45.06 45.70 Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ7 18.98 25.12 31.92 39.48 45.12 48.16 51.08 Total ADD 517.3 18.98 25.12 31.92 39.48 45.12 48.16 51.08 Outlet to Frenchman's Bay KC_CJ.4 654.4 18.00 22.05 25.54 30.04 33.41 35.94 58.40

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Pickering Parkway Diversion to Pine Creek Twin 2400 mm Diameter Sewers Maximum Hydraulic Grade Line (m) Location Node 2 5 10 25 50 100 Hazel Sandy Beach Road North Culvert - Downstream KC_J19 76.95 77.10 77.26 77.38 77.47 77.47 77.53 Sandy Beach Road North Culvert - Upstream KC_J20 77.45 77.59 77.71 77.78 77.83 77.83 77.86 Alyssum Street Culvert - Downstream KC_J24 77.51 77.66 77.80 77.92 78.00 78.02 78.06 Alyssum Street Culvert - Upstream KC_J25 78.06 78.13 78.21 78.27 78.31 78.31 78.32 Reytan Boulevard Culvert - Downstream KC_J28 78.07 78.15 78.22 78.28 78.32 78.33 78.33 Reytan Boulevard Culvert - Upstream KC_J29 78.89 79.03 79.12 79.18 79.23 79.24 79.23 Morden Lane Culvert - Downstream KC_J36 79.08 79.26 79.60 79.65 79.66 79.70 79.54 Morden Lane Culvert - Upstream KC_J37 80.30 80.48 80.54 80.61 80.65 80.69 80.62 Bayly Street Culvert - Downstream KC_J43 80.60 80.78 80.88 80.99 81.06 81.12 80.99 Bayly Street Culvert -Upstream KC_J44 81.22 81.34 81.41 81.55 81.68 81.81 81.49 Highway 401 / CNR Culverts - Downstream KC_J48 81.67 81.67 81.67 81.76 81.85 81.94 81.70 Highway 401 / CNR Culverts - Upstream 8 83.16 83.35 83.47 83.63 83.78 84.03 83.30 flood damages incurred

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Pickering Parkway Diversion to Pine Creek Twin 2400 mm Diameter Sewers Diversion Flow Summary Storm Event Peak Flow to Storage / Junction Node Peak Flow from Storage / Junction Node Maximum Storage Volume Maximum Water Level Flow in Diversion Sewers Flow in Highway 401 Cuvlert 2 15.52 14.16 120 83.16 9.21 12.14 5 18.58 20.28 183 83.35 9.21 13.07 10 21.08 23.69 244 83.47 10.60 13.59 25 26.61 27.66 350 83.63 13.65 14.25 50 30.39 30.42 471 83.78 15.64 14.81 100 34.00 32.84 736 84.03 17.07 15.80 Hazel 22.83 22.71 160 83.30 9.95 12.77 Node / Conduit 8 8 8 8 D2 34_1

Downtown SWM and Diversion Study TMIG Project 12150 Flood Damage Estimates Pickering Parkway Diversion to Pine Creek Storm Event Buildings Impacted Flood Damages* 2 5 $162,000 5 21 $686,000 10 56 $1,688,500 25 61 $1,838,500 50 62 $1,866,600 100 64 $1,932,700 Regional 62 $1,866,600 Average Annual Damages Existing Average Annual Damages Reduction in Annual Flood Damages $448,283 $390,931 -$57,352 * Damages Calculated as 10% of the Assessed Value of all Properties where buildings are partially or entirely within the flood plain

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 Cost Estimate Pickering Parkway Diversion to Pine Creek 650 m Twin 2400 mm diam concrete pipe Item No. Spec. Code Item Description Unit Quantity Unit Price Total Notes 1 Storm Sewer Dia. 2.4m, Installed by Open Cut construction m 600.0 $ 6,300.00 $ 3,780,000.00 Quantity reflects twin diversion sewers 2 Storm Sewer Dia. 2.4m, Installed by Tunnelling m 700.0 $ 10,000.00 $ 7,000,000.00 3 Chambers / Headwalls at inlet / outlet each 2 $ 30,000.00 $ 60,000.00 4 SWM Pond LS 1 $ 4,000,000.00 $ 4,000,000.00 A design has not been prepared for the SWM pond. The cost of $4 Million was the high limit of the cost of a pond from the FBSWMMP 5 Utility Relocation, Traffic Control and General Contingencies (20 % of Diversion Costs) LS 1 $ 2,168,000.00 $ 2,168,000.00 TOTAL COST $ 17,008,000.00 Cost Estimates - 2013 09 03.xls

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G6 Pickering Parkway Complete Diversion to Pine Creek + Culvert Improvements in Krosno and Pine Creeks TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Complete Diversion to Pine Creek (Twin 2.4 m Diameter Sewers) Combined with Culvert Improvements (Twin 3.0 m x 1.8 m Box Culverts at Morden, Reytan and Alyssum) Maximum Flow Rate Location Conduit Drainage Area (ha) 2 5 10 25 50 100 Hazel Highway 401 34_3 162.6 1.45 1.45 1.45 1.45 1.45 1.45 1.45 Bayly Street Weir Flow KC_CJ44_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ44 9.09 9.09 9.09 9.09 9.09 9.09 9.09 Total Flow ADD 162.6 9.09 9.09 9.09 9.09 9.09 9.09 9.09 Downstream Bayly Street KC_CJ43 253.1 6.03 6.03 6.75 8.57 9.94 11.38 8.16 Morden Lane Weir Flow KC_CJ37_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ37 6.68 7.14 8.77 11.00 12.78 14.52 10.76 Total ADD 272.6 6.68 7.14 8.77 11.00 12.78 14.52 10.76 Reytan Boulevard Weir Flow KC_CJ29_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ29 5.32 7.91 9.66 11.93 13.74 15.55 12.20 Total ADD 286.3 5.32 7.91 9.66 11.93 13.74 15.55 12.20 Alyssum Street Weir Flow KC_CJ25_HC 0.00 0.00 0.00 0.00 0.00 0.22 0.00 Culvert Flow KC_CJ25 5.80 8.49 10.23 12.28 14.13 15.96 13.37 Total ADD 304.3 5.80 8.49 10.23 12.28 14.13 16.18 13.37 Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC 0.00 0.00 0.00 0.07 2.08 4.88 2.59 Culvert Flow KC_CJ20 6.52 9.39 11.19 12.89 13.51 13.70 12.67 Total ADD 321.8 6.52 9.39 11.19 12.96 15.59 18.58 15.26 Confluence with East Tributa KC_CA 459.7 10.34 17.10 22.87 29.71 34.86 40.26 34.02 Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ7 12.41 19.36 25.11 31.98 37.73 42.98 39.62 Total ADD 517.3 12.41 19.36 25.11 31.98 37.73 42.98 39.62 Outlet to Frenchman's Bay KC_CJ.4 654.4 12.54 17.88 21.56 25.84 28.95 32.10 45.48

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Complete Diversion to Pine Creek (Twin 2.4 m Diameter Sewers) Combined with Culvert Improvements (Twin 3.0 m x 1.8 m Box Culverts at Morden, Reytan and Alyssum) Maximum Hydraulic Grade Line (m) Location Node 2 5 10 25 50 100 Hazel Sandy Beach Road North Culvert - Downstream KC_J19 76.16 76.49 76.75 77.01 77.13 77.24 77.17 Sandy Beach Road North Culvert - Upstream KC_J20 76.43 76.83 77.08 77.45 77.59 77.67 77.61 Alyssum Street Culvert - Downstream KC_J24 76.57 76.91 77.15 77.49 77.65 77.75 77.67 Alyssum Street Culvert - Upstream KC_J25 76.71 77.05 77.28 77.60 77.80 77.94 77.80 Reytan Boulevard Culvert - Downstream KC_J28 76.92 77.16 77.35 77.64 77.83 77.96 77.83 Reytan Boulevard Culvert - Upstream KC_J29 77.17 77.43 77.60 77.85 78.04 78.19 78.01 Morden Lane Culvert - Downstream KC_J36 78.47 78.52 78.63 78.78 78.88 78.99 78.77 Morden Lane Culvert - Upstream KC_J37 78.61 78.73 78.87 79.05 79.19 79.32 79.04 Bayly Street Culvert - Downstream KC_J43 79.91 79.91 79.95 80.07 80.16 80.24 80.04 Bayly Street Culvert -Upstream KC_J44 80.73 80.73 80.73 80.73 80.73 80.73 80.73 Highway 401 / CNR Culverts - Downstream KC_J48 81.66 81.66 81.66 81.66 81.66 81.66 81.66 Highway 401 / CNR Culverts - Upstream 8 82.55 82.79 83.06 83.48 83.88 84.26 83.43

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Complete Diversion to Pine Creek (Twin 2.4 m Diameter Sewers) Combined with Culvert Improvements (Twin 3.0 m x 1.8 m Box Culverts at Morden, Reytan and Alyssum) Pickering Town Centre Storage Summary Storm Event Peak Flow to Storage Node Peak Flow from Storage Node Maximum Storage Volume Maximum Water Level 2 11.62 11.04 47 82.55 5 16.58 15.89 71 82.79 10 20.13 18.82 104 83.06 25 25.60 22.48 246 83.48 50 29.04 24.15 574 83.88 100 32.66 25.51 1626 84.26 Hazel 22.66 22.17 222 83.43 Node / Conduit 8 8 8 8

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 Cost Estimate Complete Flooding Solution, Independent of Highway 401 Culvert Restrictions Pickering Parkway Diversion to Pine Creek Culvert Improvements Flood Proofing remaining vulnerable homes Item No. Spec. Code Item Description Unit Quantity Unit Price Total Notes 1 Diversion Sewers on Pickering Parkway + SWM Pond west of Liverpool Road LS 1 $ 13,008,000.00 $ 13,008,000.00 Total Cost, including contingencies, from Pickering Parkway Diversion Alternative, less $4Million for SWM Pond at end of diversion 2 Culvert Improvements at Morden, Retyan and Alyssum LS 1 $ 1,372,800.00 $ 1,372,800.00 Total Cost, including contingencies, from Culvert Upgrades Alternative 3 Pine Creek Improvements to lower tailwater and accommodate increased flows LS 1 $ 15,980,000.00 $ 15,980,000.00 Radom Street & Hwy 401 culvert replacements plus channel modifications upstream of Highwy 401. Cost, including contingencies, taken from Sept 2007 MMM Report 4 Flood Proofing for Remaining Structures each $ 10,000.00 $ - 5 TOTAL COST $ 30,360,800.00

Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G7 Krosno Boulevard Relief Sewer TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Krosno Boulevard Relief Sewer 3.0 m wide x 1.5 m high concrete box sewer Maximum Flow Rate Location Conduit Drainage Area (ha) 2 5 10 25 50 100 Hazel Highway 401 34_1 162.6 10.01 13.39 15.72 17.19 17.63 17.92 17.81 Bayly Street Weir Flow KC_CJ44_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ44 9.89 13.19 15.31 17.00 17.50 17.93 17.95 Total Flow ADD 162.6 9.89 13.19 15.31 17.00 17.50 17.93 17.95 Downstream Bayly Street KC_CJ43 253.1 12.91 17.37 20.21 22.98 24.66 26.09 25.24 Morden Lane Weir Flow KC_CJ37_HC 0.00 0.00 0.00 0.00 0.00 0.28 0.47 Culvert Flow KC_CJ37 4.12 6.40 9.93 12.26 13.71 14.73 14.89 Total ADD 272.6 4.12 6.40 9.93 12.26 13.71 15.02 15.36 Reytan Boulevard Weir Flow KC_CJ29_HC 0.00 0.00 0.00 0.07 0.15 0.29 2.54 Culvert Flow KC_CJ29 4.18 6.34 9.64 11.78 12.51 13.24 14.02 Total ADD 286.3 4.18 6.34 9.64 11.85 12.66 13.53 16.56 Alyssum Street Weir Flow KC_CJ25_HC 0.00 0.09 1.73 4.49 6.09 7.60 11.56 Culvert Flow KC_CJ25 4.17 6.45 8.18 8.39 8.38 8.38 8.15 Total ADD 304.3 4.17 6.54 9.90 12.88 14.47 15.98 19.71 Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC 0.00 4.79 8.27 11.85 13.86 15.65 20.47 Culvert Flow KC_CJ20 12.87 13.95 14.06 14.05 14.05 14.06 13.45 Total ADD 321.8 12.87 18.74 22.33 25.90 27.91 29.71 33.92 Confluence with East Tributa KC_CA 459.7 17.45 26.86 31.99 39.23 43.87 47.71 47.57 Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Culvert Flow KC_CJ7 18.53 27.91 33.36 40.73 45.67 50.27 52.81 Total ADD 517.3 18.53 27.91 33.36 40.73 45.67 50.27 52.81 Outlet to Frenchman's Bay KC_CJ.4 654.4 17.08 22.95 26.77 31.21 34.27 37.14 61.75

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Krosno Boulevard Relief Sewer 3.0 m wide x 1.5 m high concrete box sewer Maximum Hydraulic Grade Line (m) Location Node 2 5 10 25 50 100 Hazel Sandy Beach Road North Culvert - Downstream KC_J19 76.88 77.20 77.32 77.41 77.46 77.51 77.62 Sandy Beach Road North Culvert - Upstream KC_J20 77.34 77.67 77.74 77.80 77.83 77.85 77.89 Alyssum Street Culvert - Downstream KC_J24 77.40 77.75 77.85 77.95 78.00 78.04 78.14 Alyssum Street Culvert - Upstream KC_J25 77.47 77.89 78.07 78.13 78.15 78.17 78.24 Reytan Boulevard Culvert - Downstream KC_J28 77.48 77.89 78.07 78.13 78.16 78.18 78.25 Reytan Boulevard Culvert - Upstream KC_J29 77.64 78.11 78.49 78.76 78.83 78.92 79.05 Morden Lane Culvert - Downstream KC_J36 78.28 78.47 78.75 78.91 79.01 79.08 79.18 Morden Lane Culvert - Upstream KC_J37 78.78 79.13 79.63 79.95 80.15 80.30 80.33 Bayly Street Culvert - Downstream KC_J43 80.32 80.56 80.70 80.83 80.90 80.97 80.95 Bayly Street Culvert -Upstream KC_J44 80.97 81.34 81.58 81.78 81.85 81.91 81.93 Highway 401 / CNR Culverts - Downstream KC_J48 81.67 81.67 81.83 81.96 82.01 82.06 82.08 Highway 401 / CNR Culverts - Upstream 8 82.75 83.43 84.01 84.39 84.54 84.66 84.63 flood damages incurred

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Krosno Boulevard Relief Sewer 3.0 m wide x 1.5 m high concrete box sewer Diversion Flow Summary Storm Event Peak Flow to Intake Peak Flow in Diversion Sewer Peak Flow in Krosno Creek (Culvert) Peak Flow in Krosno Creek (Weir) Total Flow Continuing in Krosno Creek 2 13.50 9.37 4.12 0.00 4.12 5 18.09 11.63 6.40 0.00 6.40 10 20.92 12.30 9.93 0.00 9.93 25 23.94 12.49 12.26 0.00 12.26 50 25.78 12.46 13.71 0.00 13.71 100 27.40 12.40 14.73 0.28 15.02 Hazel 27.48 12.07 14.89 0.47 15.36 Node / Conduit KC_J37 D1 KC_CJ37 KC_CJ37_HC

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 PCSWMM Model Output Krosno Boulevard Relief Sewer 3.0 m wide x 1.5 m high concrete box sewer Pickering Town Centre Storage Summary Storm Event Peak Flow to Storage Node Peak Flow from Storage Node Maximum Storage Volume Maximum Water Level 2 11.45 10.01 67 82.75 5 16.14 13.39 221 83.43 10 19.57 15.72 712 84.01 25 24.60 17.19 3190 84.39 50 28.23 17.63 5994 84.54 100 31.51 17.92 8748 84.66 Hazel 21.55 17.81 8160 84.63 Node / Conduit 8 8 8 8

Downtown SWM and Diversion Study TMIG Project 12150 Flood Damage Estimates Krosno Boulevard Relief Sewer Storm Event Buildings Impacted Flood Damages* 2 0 $0 5 2 $70,900 10 3 $100,000 25 4 $131,100 50 7 $222,500 100 7 $222,500 Regional 34 $1,074,500 Average Annual Damages Existing Average Annual Damages Reduction in Annual Flood Damages $31,874 $390,931 $359,057 * Damages Calculated as 10% of the Assessed Value of all Properties where buildings are partially or entirely within the flood plain

City of Pickering Krosno Creek Diversion Project TMIG Project 12150 Cost Estimate Krosno Boulevard Relief Sewer 660 m 3.0 x 1.5 Concrete Box Item No. Spec. Code Item Description Unit Quantity Unit Price Total Notes 1 3.0m x 1.5m Concrete Box Sewer Depth - Less than 5.0m m 660.0 $ 5,800.00 $ 3,828,000.00 2 Storm Sewer MH (every 90m) m 8.0 $ 30,000.00 $ 240,000.00 3 Headwalls inlet /outlet each 2.0 $ 30,000.00 $ 60,000.00 4 Utility Relocation, Traffic Control and General Contingencies (40 %) LS 1 $ 1,651,200.00 $ 1,651,200.00 Higher contingency related to potenital conflicts with sanitary services to houses along the route TOTAL COST $ 5,779,200.00 Cost Estimates - 2013 09 03.xls