Requires the department to, by December 31, 2006, study the adverse effects on residential neighborhoods from the noise generated by off-road and all-terrain vehicles. Based upon its findings, the department shall revise the rules establishing maximum noise levels permissible in identified environments and related use standards relating to the reception of noise within those environments. The revisions must: (1) Strengthen the decibel standards as applied to off-road and all-terrain vehicles so that the standards are stringent enough to protect health, safety, and welfare in residential neighborhoods; and

(2) Identify enforcement alternatives such as measurable buffers or a narrative standard such as a "plainly audible at the property line" standard that can be easily measured by law enforcement in the field instead of requiring expensive and burdensome protocols for decibel measurement.

Provides that any person who violates any rule adopted by the department under chapter 70.107 RCW is subject to a civil penalty imposed by local government pursuant to this act. Such penalties shall be as follows: One hundred dollars for the first violation; two hundred fifty dollars for the second violation; and one thousand dollars for the third and every subsequent violation.