The risers are located inside the tower, spanning the distance from the seafloor to the top of the tower and the buoyancy tanks. The buoyancy of the tanks keeps the risers tensioned in place. Flexible risers are then connected to the vertical risers and ultimately to the facility above.
The total sales tax rate in any given location can be broken down into state, county, city, and special district rates. Illinois has a 6.25% sales tax and Tazewell County collects an additional 0.50%, so the minimum sales tax rate in Tazewell County is 6.75% (not including any city or special district taxes). This table shows the total sales tax rates for all cities and towns in Tazewell County, including all local taxes.
The 8.25% sales tax rate in Sterling consists of 6.25% Illinois state sales tax, 1.00% Whiteside County sales tax and 1.00% Sterling tax. There is no applicable special tax. You can print a 8.25% sales tax table here. For tax rates in other cities, see Illinois sales taxes by city and county.