Taken from presentation by: Neal Babcock & Howard Alderson, P.E. Alderson Engineering, Inc. February 26, 2008

 Typical Installation:  100 to +150 ft/ton;  15’ x 15’ to 20’ x 20’ spacing  HDPE Piping

4,600 Tons 6,500 Tons

Underground soil/rock formation strongly affects the performance of the well field; –Sands and Clays; –Rock; Affects type of Grouting used.

 Primary Loop  Variable Flow  Circulates around the Campus  Secondary Loop #1  Variable Flow  Circulates thru Borefield  Secondary Loop #2  Variable Flow  Circulates within a Building

 Campus Distribution Loop:  HDPE Pipe; 160 PSI Rated  No Insulation  Borehole Piping  HDPE Pipe; 160 PSI Rated  No Insulation  Isolation Valves  Butterfly; 150 PSI Rated  Distribution Isolation Valves  Butterfly/Ball Valves; 150 PSI Rated  Borehole Grout  Thermally Enhanced Bentonite; K=1.2