The tax levied by RCW 82.08.020
shall not apply to sales of tangible personal property to a consumer as defined in RCW 82.04.190
(6) if the tangible personal property is incorporated into, installed in, or attached to a building or other structure that is an integral part of a laser interferometer gravitational wave observatory on which construction is commenced before December 1, 1996.
Effective date—1996 c 113:
"This act is necessary for the immediate preservation of the public peace, health, or safety, or support of the state government and its existing public institutions, and shall take effect immediately [March 20, 1996]." [ 1996 c 113 § 3.