Appendix G. Alternative Solutions Details. Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING
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1 Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G Alternative Solutions Details TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD
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3 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
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5 Design of a 2-Stage Uniform Channel Low Flow Channel Design Flow m 3 /s Slope m/m Mannings 'n' 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 m 3 /s Base Slope 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 m 2 Full Section Wetted Perimeter m Full Section Flow m 3 /s Average Channel Velocity 1.29 m/s Total Channel Depth 2.00 m Channel Top Width 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
6 C D E A 8800 Dufferin Street, Suite 200 Vaughan, ON L4K 0C5... p: f: 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: FIGURE No. 4-1
7 City of Pickering Krosno Creek Diversion Project TMIG Project 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, $ 14,200, 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 $ 2, $ 2,125, Including grading and landscape restoration 3 Bridges each 4.0 $ 1,000, $ 4,000, Bridges to span the channel at Bayly, Morden, Reytan and Alyssum 4 General Contingencies (20 %) LS 1 $ 4,065, $ 4,065, TOTAL COST $ 24,390,000.00
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9 Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G2 Enhanced Stormwater Management Controls TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD
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11 City of Pickering Krosno Creek Diversion Project TMIG Project 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) Hazel Highway _ Bayly Street Weir Flow KC_CJ44_HC Culvert Flow KC_CJ Total Flow ADD Downstream Bayly Street KC_CJ Morden Lane Weir Flow KC_CJ37_HC Culvert Flow KC_CJ Total ADD Reytan Boulevard Weir Flow KC_CJ29_HC Culvert Flow KC_CJ Total ADD Alyssum Street Weir Flow KC_CJ25_HC Culvert Flow KC_CJ Total ADD Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC Culvert Flow KC_CJ Total ADD Confluence with East Tributa KC_CA Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC Culvert Flow KC_CJ Total ADD Outlet to Frenchman's Bay KC_CJ
12 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Sandy Beach Road North Culvert - Downstream KC_J Sandy Beach Road North Culvert - Upstream KC_J Alyssum Street Culvert - Downstream KC_J Alyssum Street Culvert - Upstream KC_J Reytan Boulevard Culvert - Downstream KC_J Reytan Boulevard Culvert - Upstream KC_J Morden Lane Culvert - Downstream KC_J Morden Lane Culvert - Upstream KC_J Bayly Street Culvert - Downstream KC_J Bayly Street Culvert -Upstream KC_J Highway 401 / CNR Culverts - Downstream KC_J Highway 401 / CNR Culverts - Upstream flood damages incurred
13 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit
14 Downtown SWM and Diversion Study TMIG Project Flood Damage Estimates Enhanced SWM Controls in Downtown Pickering Storm Event Buildings Impacted Flood Damages* 2 2 $70, $193, $825, $1,750, $1,802, $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
15 Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G3 Culvert Improvements TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD
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17 City of Pickering Krosno Creek Diversion Project TMIG Project PCSWMM Model Output Culvert Upgrades Twin 3 m box culverts at Alyssum, Reytan and Morden Maximum Flow Rate Location Conduit Drainage Area (ha) Hazel Highway _ Bayly Street Weir Flow KC_CJ44_HC Culvert Flow KC_CJ Total Flow ADD Downstream Bayly Street KC_CJ Morden Lane Weir Flow KC_CJ37_HC Culvert Flow KC_CJ Total ADD Reytan Boulevard Weir Flow KC_CJ29_HC Culvert Flow KC_CJ Total ADD Alyssum Street Weir Flow KC_CJ25_HC Culvert Flow KC_CJ Total ADD Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC Culvert Flow KC_CJ Total ADD Confluence with East Tributa KC_CA Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC Culvert Flow KC_CJ Total ADD Outlet to Frenchman's Bay KC_CJ
18 City of Pickering Krosno Creek Diversion Project TMIG Project PCSWMM Model Output Culvert Upgrades Twin 3 m box culverts at Alyssum, Reytan and Morden Maximum Hydraulic Grade Line (m) Location Node Hazel Sandy Beach Road North Culvert - Downstream KC_J Sandy Beach Road North Culvert - Upstream KC_J Alyssum Street Culvert - Downstream KC_J Alyssum Street Culvert - Upstream KC_J Reytan Boulevard Culvert - Downstream KC_J Reytan Boulevard Culvert - Upstream KC_J Morden Lane Culvert - Downstream KC_J Morden Lane Culvert - Upstream KC_J Bayly Street Culvert - Downstream KC_J Bayly Street Culvert -Upstream KC_J Highway 401 / CNR Culverts - Downstream KC_J Highway 401 / CNR Culverts - Upstream flood damages incurred
19 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit
20 Downtown SWM and Diversion Study TMIG Project Flood Damage Estimates Culvert Upgrades (Alyssum, Reytan & Morden) Storm Event Buildings Impacted Flood Damages* 2 1 $35, $70, $100, $131, $222, $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
21 City of Pickering Krosno Creek Diversion Project TMIG Project 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, $ 276, x 3.0m x 1.8m Concrete Box Culvert Depth - Less than 5.0m (Raytan Crossing) m 27.0 $ 12, $ 324, x 3.0m x 1.8m Concrete Box Culvert Depth - Less than 5.0m (Alyssum Crossing) m 23.0 $ 12, $ 276, Headwalls on upstream and downstream end of each culvert each 6.0 $ 30, $ 180, Utility Relocation, Traffic Control and General Contingencies (30 %) LS 1.0 $ 316, $ 316, TOTAL COST $ 1,372, Cost Estimates xls
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23 Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G4 Diversion Alternatives TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD
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25 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 % m diameter concrete pipes 4, Bayly Street, West to Pine Creek % m diameter concrete pipe Bayly Street, East to Sandy Beach Road, south to Krosno Creek % m wide x 0.9 m high concrete box Morden Lane, south on Reytan Boulevard to Krosno Creek % m wide x 1.2 m high concrete box Morden Lane, south on Krosno Boulevard, east on Alyssum to Krosno Creek % m wide x 1.5 m high concrete box 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
26 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: f: 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: FIGURE No. 4-2
27 Diversion Alignment 1: Pickering Parkway to Pine Creek Liverpool Road Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 2.4 m
28 Diversion Alignment 2: Bayly Street to Pine Creek Liverpool Road Average Pipe Slope: 0.15% Maximum Diversion Sewer Height: 1.8 m
29 Diversion Alignment 3: Bayly Street Sandy Beach Road Krosno Creek Intersection of Bayly & Sandy Beach Existing Ground Invert Obvert Min Cover Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 0.9 m
30 Diversion Alignment 4: Morden Lane Reytan Boulevard Krosno Creek Invert Obvert Min Cover Existing Ground Average Pipe Slope: 0.30% Maximum Diversion Sewer Height: 1.2 m
31 Diversion Alignment 5: Morden Lane Krosno Boulevard Alyssum Street Krosno Creek 85 Intersection of Krosno Blvd & Reytan Intersection of Krosno Blvd & Alyssum Existing Ground Invert Obvert Minimum Cover Average Pipe Slope: 0.25% Maximum Diversion Sewer Height: 1.5 m
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33 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
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35 City of Pickering Krosno Creek Diversion Project TMIG Project PCSWMM Model Output Pickering Parkway Diversion to Pine Creek Twin 2400 mm Diameter Sewers Maximum Flow Rate Location Conduit Drainage Area (ha) Hazel Highway _ Bayly Street Weir Flow KC_CJ44_HC Culvert Flow KC_CJ Total Flow ADD Downstream Bayly Street KC_CJ Morden Lane Weir Flow KC_CJ37_HC Culvert Flow KC_CJ Total ADD Reytan Boulevard Weir Flow KC_CJ29_HC Culvert Flow KC_CJ Total ADD Alyssum Street Weir Flow KC_CJ25_HC Culvert Flow KC_CJ Total ADD Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC Culvert Flow KC_CJ Total ADD Confluence with East Tributa KC_CA Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC Culvert Flow KC_CJ Total ADD Outlet to Frenchman's Bay KC_CJ
36 City of Pickering Krosno Creek Diversion Project TMIG Project PCSWMM Model Output Pickering Parkway Diversion to Pine Creek Twin 2400 mm Diameter Sewers Maximum Hydraulic Grade Line (m) Location Node Hazel Sandy Beach Road North Culvert - Downstream KC_J Sandy Beach Road North Culvert - Upstream KC_J Alyssum Street Culvert - Downstream KC_J Alyssum Street Culvert - Upstream KC_J Reytan Boulevard Culvert - Downstream KC_J Reytan Boulevard Culvert - Upstream KC_J Morden Lane Culvert - Downstream KC_J Morden Lane Culvert - Upstream KC_J Bayly Street Culvert - Downstream KC_J Bayly Street Culvert -Upstream KC_J Highway 401 / CNR Culverts - Downstream KC_J Highway 401 / CNR Culverts - Upstream flood damages incurred
37 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit D2 34_1
38 Downtown SWM and Diversion Study TMIG Project Flood Damage Estimates Pickering Parkway Diversion to Pine Creek Storm Event Buildings Impacted Flood Damages* 2 5 $162, $686, $1,688, $1,838, $1,866, $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
39 City of Pickering Krosno Creek Diversion Project TMIG Project 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 $ 6, $ 3,780, Quantity reflects twin diversion sewers 2 Storm Sewer Dia. 2.4m, Installed by Tunnelling m $ 10, $ 7,000, Chambers / Headwalls at inlet / outlet each 2 $ 30, $ 60, SWM Pond LS 1 $ 4,000, $ 4,000, 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, $ 2,168, TOTAL COST $ 17,008, Cost Estimates xls
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41 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
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43 City of Pickering Krosno Creek Diversion Project TMIG Project 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) Hazel Highway _ Bayly Street Weir Flow KC_CJ44_HC Culvert Flow KC_CJ Total Flow ADD Downstream Bayly Street KC_CJ Morden Lane Weir Flow KC_CJ37_HC Culvert Flow KC_CJ Total ADD Reytan Boulevard Weir Flow KC_CJ29_HC Culvert Flow KC_CJ Total ADD Alyssum Street Weir Flow KC_CJ25_HC Culvert Flow KC_CJ Total ADD Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC Culvert Flow KC_CJ Total ADD Confluence with East Tributa KC_CA Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC Culvert Flow KC_CJ Total ADD Outlet to Frenchman's Bay KC_CJ
44 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Sandy Beach Road North Culvert - Downstream KC_J Sandy Beach Road North Culvert - Upstream KC_J Alyssum Street Culvert - Downstream KC_J Alyssum Street Culvert - Upstream KC_J Reytan Boulevard Culvert - Downstream KC_J Reytan Boulevard Culvert - Upstream KC_J Morden Lane Culvert - Downstream KC_J Morden Lane Culvert - Upstream KC_J Bayly Street Culvert - Downstream KC_J Bayly Street Culvert -Upstream KC_J Highway 401 / CNR Culverts - Downstream KC_J Highway 401 / CNR Culverts - Upstream
45 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit
46 City of Pickering Krosno Creek Diversion Project TMIG Project 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, $ 13,008, 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, $ 1,372, Total Cost, including contingencies, from Culvert Upgrades Alternative 3 Pine Creek Improvements to lower tailwater and accommodate increased flows LS 1 $ 15,980, $ 15,980, 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, $ - 5 TOTAL COST $ 30,360,800.00
47 Krosno Creek Flood Reduction Project PROJECT FILE REPORT CITY OF PICKERING Appendix G7 Krosno Boulevard Relief Sewer TMIG THE MUNICIPAL INFRASTRUCTURE GROUP LTD
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49 City of Pickering Krosno Creek Diversion Project TMIG Project 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) Hazel Highway _ Bayly Street Weir Flow KC_CJ44_HC Culvert Flow KC_CJ Total Flow ADD Downstream Bayly Street KC_CJ Morden Lane Weir Flow KC_CJ37_HC Culvert Flow KC_CJ Total ADD Reytan Boulevard Weir Flow KC_CJ29_HC Culvert Flow KC_CJ Total ADD Alyssum Street Weir Flow KC_CJ25_HC Culvert Flow KC_CJ Total ADD Sandy Beach Road North Culvert Weir Flow KC_CJ20_HC Culvert Flow KC_CJ Total ADD Confluence with East Tributa KC_CA Sandy Beach Road South Culvert Weir Flow KC_CJ7_HC Culvert Flow KC_CJ Total ADD Outlet to Frenchman's Bay KC_CJ
50 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Sandy Beach Road North Culvert - Downstream KC_J Sandy Beach Road North Culvert - Upstream KC_J Alyssum Street Culvert - Downstream KC_J Alyssum Street Culvert - Upstream KC_J Reytan Boulevard Culvert - Downstream KC_J Reytan Boulevard Culvert - Upstream KC_J Morden Lane Culvert - Downstream KC_J Morden Lane Culvert - Upstream KC_J Bayly Street Culvert - Downstream KC_J Bayly Street Culvert -Upstream KC_J Highway 401 / CNR Culverts - Downstream KC_J Highway 401 / CNR Culverts - Upstream flood damages incurred
51 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit KC_J37 D1 KC_CJ37 KC_CJ37_HC
52 City of Pickering Krosno Creek Diversion Project TMIG Project 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 Hazel Node / Conduit
53 Downtown SWM and Diversion Study TMIG Project Flood Damage Estimates Krosno Boulevard Relief Sewer Storm Event Buildings Impacted Flood Damages* 2 0 $0 5 2 $70, $100, $131, $222, $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
54 City of Pickering Krosno Creek Diversion Project TMIG Project 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 $ 5, $ 3,828, Storm Sewer MH (every 90m) m 8.0 $ 30, $ 240, Headwalls inlet /outlet each 2.0 $ 30, $ 60, Utility Relocation, Traffic Control and General Contingencies (40 %) LS 1 $ 1,651, $ 1,651, Higher contingency related to potenital conflicts with sanitary services to houses along the route TOTAL COST $ 5,779, Cost Estimates xls
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