Chattanooga Boiler & Tank Co. - City of                             PSF Industries - Edwards Airforce Base                Chattanooga; Department of Public Works

                                                   
                  Caldwell Tanks, Inc. - City of Lake Mary                                       Chicago Bridge & Iron Co. - 
                                                                                                                               Yucaipa Valley Water District

                                                                   
                                                        Chicago Bridge & Iron Co. - Village of Palatine