Update: Major Metro East Geothermal Opportunity. NE Riverfront Industrial Park, East St. Louis, IL

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1 Update: Major Metro East Geothermal Opportunity NE Riverfront Industrial Park, East St. Louis, IL

2 Study Area: Northeast Riverfront Industrial Park & IDOT Bowman Avenue Pump Station East St. Louis City Limits Industrial Park Pump Station

3 Potential Geothermal Capacity 500,000 gal/hr; 60 F (dry weather) Refrigeration capacity 2,500 tons (8,700 kw) 700,000 SF refrigerated warehouse Heat & AC capacity 4,200 tons heat (10,000 kw) 2,900 tons AC (15,000 kw) 2,000,000 SF office

4 Goal: Be Known & Be Ready Additional Monitoring Implementation Team & Stakeholders City Limits Industrial Park Pump Station

5 Presentation Outline History Development context & site Technical details Challenges & risk factors Implementation scenarios Summary

6 Estimated Area Pumpage, Ground-Water Levels and Pumpage in the Metro-East Area, Illinois, , by Richard J. Schicht and Andrew G. Buck, Illinois State Water Survey,1995

7 IDOT Early Dewatering History I-70 at the Tri-Level Bridge 1958 Highway design Low point elevation = ft Ground water elevation = 390 ft Highway construction 1962 Drainage system failure 1963 New drainage system installed Performance deterioration wells in service, 600 gpm each Source: Richard J. Schicht and Andrew G. Buck, Ground-Water Levels and Pumpage in the Metro-East Area, Illinois, , Illinois State Water Survey, 1995

8 How the Site Was Identified Interesting Open Loop Case Studies UIUC Research Group Prairie Research Institute: Illinois Sustainable Technology Center, Illinois State Water Survey, Illinois Geological Survey Identify potential IL locations for open loop IDOT Dewatering Wells

9 River Edge Redevelopment Zone & IDOT Dewatering Wells RERZ Development incentives Dewatering Geothermal opportunity Network of IDOT Dewatering Wells

10 Northeast Riverfront Industrial Park & IDOT Bowman Avenue Pump Station City Limits Industrial Park Pump Station

11 Outfall IDOT Bowman Avenue Pump Station

12 IDOT Bowman Avenue Pump Station

13 R/W Alignment, 72 Gravity Discharge Line

14 72 Gravity Discharge Line Outfall into Drainage Ditch

15 Biofouling and Corrosion

16 Water Chemistry Source: Mark A. Anliker and Robert D. Olson, Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois, Contract Report , Prepared for the Illinois Department of Transportation Division of Highways, 2003

17 Biological Aggressivity Source: Mark A. Anliker and Robert D. Olson, Dewatering Well Assessment for the Highway Drainage System at Four Sites in the East St. Louis Area, Illinois, Contract Report , Prepared for the Illinois Department of Transportation Division of Highways, 2003

18 Temperature ( F) Geothermal Resource Characterization 500,000 gal/hr (12 MMGD) at 60 F Except during precipitation events 50 12/29/11 2/29/12 5/1/12 7/2/12 9/2/12

19 Geothermal Resource Characterization Refrigeration Thermal Capacity 2,900 tons 700,000 SF refrigerated warehouse Refrigeration Energy Use, Cost, Savings 7,400 kwh/yr per 1,000 SF $370/yr per 1,000 SF Savings = 40% ($300/yr per 1,000 SF)

20 Geothermal Resource Characterization Space Heating & AC Thermal Capacity 4,200 tons heating; 2,900 tons AC 2,000,000 SF office Heating & AC Energy Use, Cost, Savings 2,800 kwh/yr per 1,000 SF $140/yr per 1,000 SF Savings = 60% ($250/yr per 1,000 SF)

21 Temperature ( F) Temperature ( F) Geothermal Resource Characterization Temperature Variations During Precipitation Reality check: predictive model (dashed line) The temperature spikes are real Jan 25-26, kgal/hr 1,200 kgal/hr 0:00 12:00 0:00 12:00 0: Aug 31 Sep 1, , kgal/hr kgal/hr 0:00 12:00 0:00 12:00 0:00

22 Geothermal Resource Characterization Temperature Variations in 8 Months of Monitoring Temperature Excursions Below 60 F Temp ( F) Time at Temp (hrs) ,471 # Excursions Max Duration (hrs) Temperature Excursions Above 60 F Temp ( F) Time at Temp (hrs) 5, # Excursions Max Duration (hrs)

23 Challenges & Risk Factors Water use arrangements with IDOT Reliability of water supply Water quality Industrial park land ownership How does this compare to installing new wells?

24 Potential Scenarios Scenario 1 Incremental Heat Exchange Loop Facility Heat Pump Dewatering Station Drainage Ditch Heat Exchanger Groundwater

25 Potential Scenarios Scenario 2 Large Thermal Utility Facility B Dual Temperature Heat Exchange Loop Facility A Facility C Thermal Utility Dewatering Station Drainage Ditch Heat Exchanger Groundwater

26 Summary: Be Known & Be Ready Additional Monitoring Implementation Team & Stakeholders City Limits Industrial Park Pump Station