Revises the business and occupation taxation of environmental remediation services.

Requires the department of ecology to report to the legislature by December 10, 2011, on the environmental remedial actions conducted under this act. The report must include the following information: (1) The number of sites for which the certifications required under this act were submitted during the years 2008, 2009, and 2010;

(2) The number of sites for which the owner's report required under this act were submitted during the years 2008, 2009, and 2010;

(3) The number of these sites which were cleaned up under a voluntary remedial action and the number of these sites which were cleaned up under state or federal order;

(4) An analysis of the effect of this act in encouraging site owners to conduct environmental remedial action more quickly or more effectively; and

(5) Recommendations to improve the timely and voluntary cleanup of contaminated sites in Washington.