HomeMy WebLinkAboutDP Library GSHP Cost Estimate - FinalDimond Park Library Geothermal Concept Design and Cost Estimate
AIRPORT & DPAC GSHP COST INFORMATION
DPAC Horizontal Piping 7272
DPAC Horizontal Piping Bid Cost 265,517$
DPAC Horizontal Piping Bid Cost/LF 36.51$
Airport Bid Cost/LF of borehole 7.50$
DIMOND PARK LIBRARY GEOTHERMAL LOOPFIELD DESIGN ASSUMPTIONS
Dimond Park Library SF 20,600
Peak BTUH per SF 25
Total BTUH Peak Heat Load 515,000
LF Borehole Piping per BTUH 0.02292
LF Boreholes required at Dimond Park Library1 11,802
Number of 330' boreholes 36
Estimated length of Horizontal Piping 2,615
DIMOND PARK LIBRARY GSHP SYSTEM CONSTRUCTION COST ESTIMATE
Boreholes2 $88,516
--escalation 17.50% $15,490
Driller Mobilization2 $170,000
--escalation 17.50% $29,750
Horizontal Piping2 $95,480
--escalation 17.50% $16,709
Site Demolition & Earthwork $80,000
Heat Pump Infrastructure in Boiler Room $140,000
Construction Contingency $64,056
Estimated Construction Cost of Gastineau GSHP System $700,000
DIMOND PARK LIBRARY GSHP SYSTEM PROJECT COST
Construction Cost of DP Library GSHP System $700,000
Design $55,000
Test Wells - Use DPAC well performance for design1 $0
Conductance Tests - Use DPAC well performance for design1 $0
Permits $5,000
CBJ Bidding Services $5,000
Consultant Construction Inspection Services 2% $14,000
CBJ Project Management Services 4% $28,000
Commissioning $10,500
Annual O&M Reporting to AEA $10,500
Project Contingency $47,000
Total Project Cost $875,000
Project Capital Cost $725,000
Project Development Cost $150,000
1 Assumes similar heat transfer conductance in soil as Dimond Park Aquatic Center
2 Cost based on Spring 2009 bid results for DPAC and Airport Loop Fields
Printed: 9/13/2012 Page 1 of 1