The Works Subject To This Contract Correspond To The Cleaning Of The Drinking Water Tanks Of The Municipalities Of Barcelona And Tarragona Managed By Integral Aigües De Catalunya, Sa (Giacsa) Management. As Well As The Contribution Of All The Machinery And The Necessary Utensils To Provide The Service And Manage Their Waste, Establishing The Technical Prescriptions In Which The Provision Of The Service Subject To The Contract Will Have To Be Subject. All Materials And Utensils For The Annual Maintenance Of Carrying Out The Scope Of This Contract Will Be Borne By The Contracting Company.