The 35 Story RSA Tower/Battle House required a very large Dewatering System. The Foundation slab will be over 7 feet thick and almost 5 feet of it will set in the natural water table. The water was pulled down to a level necessary to set rebar and pour the slab. Burns Dewatering Services provided around the clock on-site service for this project for 11 months. The final concrete pour took over 24 hours constant. This system was designed, installed, and operated by Burns Dewatering Services, Inc.