There are several key advantages to using bioremediation as opposed to other, more traditional remediation methods. Firstly, because it can normally be conducted in-situ, bioremediation tends to be the most cost effective option, as it does not involve any costly transportation of hazardous materials.
6.5% is the smallest possible tax rate (98060, Seattle, Washington) 10% are all the other possible sales tax rates of Seattle area. 10.1% is the highest possible tax rate (98101, Seattle, Washington) The average combined rate of every zip code in Seattle, Washington is 9.699%. Other 2018 sales tax fact for Seattle
Washington State Sales Tax. The flip-side of the stateâs income tax-free status is its high sales taxes. The stateâs base sales tax rate is 6.5%. Since cities and counties collect additional sales taxes on top of that rate, in practice rates are typically at least 8% and often higher than 9%. The table below shows sales tax rates for all of the counties and the largest cities in Washington.