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Prelim Cost Estimate_3-21-16UNIT PRICE ASSUMPTIONS Engineer's Estimate of Probable Construction Costs -PRELIMINARY LEVEL FOR PRICING The Town of Northampton Drainage Relocation - Northampton Lumber Yard Engineer's Estimate of Probable Construction Costs Date: March, 21 2016 ENR Index: 10,181.92 (February 2016) Item No.Description Unit Cost Units Quantity Cost 1 2% Mobilization/Demobilization 12,000$LS 1 12,000$ 2 Survey 5,000$LS 1 5,000$ 3 Railroad Coordination 5,000$LS 1 5,000$ 4 Pipe - RCP 72-inch diameter 650$LF 325 211,250$ 5 Pipe - RCP 12-inch diameter 175$LF 85 14,875$ 6 Pipe - DI 12-inch diameter 250$LF 75 18,750$ 7 Catch Basin - Type 1 Single Grate 3,500$EA 1 3,500$ 8 Manhole - Precast 4-Foot Diameter 2,500$EA 2 5,000$ 9 Manhole - Precast 10'x10'x15', Installation 27,000$EA 3 81,000$ 10 Manhole - Special Structure Sweep - Precast Concrete 45,000$EA 1 45,000$ 11 Bypass Pumping 45,000$LS 1 45,000$ 12 Flow Fill (pumpable)85$CY 300 25,500$ 13 Test pits 75$CY 150 11,250$ 14 Rock Excavation 100$CY 15 1,500$ 15 Utility Support and Coordination (640 LF x 18' depth = 11520 sf )45$SF 11500 517,500$ 16 Export of Soil 25$TON 835 20,875$ 17 Export of Asphalt Materials (Includes roadway and site)20$TON 150 3,000$ 18 Excavation of Unsuitable Material Below Grade (Replaced with on site soil)25$CY 400 10,000$ 19 Crushed Stone for pipe bedding 20$CY 500 10,000$ 20 Temporary Trench Pavement (2.0-inch, Local Roads)125$TON 45 5,625$ 21 Full Depth Paving (2"/2")125$TON 90 11,250$ 22 Processed gravel Base (12" thick under road)20$CY 150 3,000$ 23 Site Clearing and Erosion Control 10,000$LS 1 10,000$ 24 Geotechnical Instrumentation & Monitoring 100$DAY 40 4,000$ 25 Police Details 800$DAY 15 12,000$ 26 Railroad Flagger 400$DAY 15 6,000$ 27 Traffic Management 2,000$LS 1 2,000$ 28 Traffic Pedestrian Management 2,000$LS 1 2,000$ TOTAL 1,101,875$ Construction Costs $1,101,875 Construction Contingency (20%)$220,000 Construction Total $1,321,875 Assumptions/Notes Engineering costs are not included Groundwater was not determined in the OTO geotechncial report Railroad elevations are based on Google Earth