Wash. Rev. Code § 29A.12.085
Beginning on January 1, 2006, all direct recording electronic voting devices must produce a paper record of each vote that may be accepted or rejected by the voter before finalizing his or her vote. This record may not be removed from the voting center, and must be human readable without an interface and machine readable for counting purposes. If the device is programmed to display the ballot in multiple languages, the paper record produced must be printed in the language used by the voter. Rejected records must either be destroyed or marked in order to clearly identify the record as rejected. Paper records produced by direct recording electronic voting devices are subject to all the requirements of chapter 29A.60 RCW for ballot handling, preservation, reconciliation, transit, and storage. The paper records must be preserved in the same manner and for the same period of time as ballots.
RCW 29A.12.085
Notice to registered poll voters-Elections by mail- 2011 c 10 : See note following RCW 29A.04.008.
Preservation: RCW 29A.60.095.
Unauthorized removal from voting center: RCW 29A.84.545.