Concurrence, Dispute, and Conference Committees: If the bill has been amended by the second house, the first house has to decide whether it will concur in the amendments or not... If the two houses cannot resolve their differences, one of them can ask for a conference committee. Members from each house meet to discuss the differences. If they agree on what is to be done, the conference committee makes a report. Both houses must adopt the conference committee report for the bill to pass the Legislature. If one house does not adopt the conference committee report (whether by vote or inaction), the bill has not passed. The House Floor Activity Report and the Senate Floor Activity Report list the bills on the concurrence, dispute, and conference calendars.
Washington State Legislature - "Overview of the Legislative Process"
Public Notice: The Chief Clerk of the House has called a meeting for the purpose of signing the conference committee report on ESSB 5693 - Making 2021-2023 fiscal biennium supplemental operating appropriations. The following members have been appointed to attend the 3/9/2022 3:00 PM virtual conference committee meeting: Representative Macri, Representative Ormsby, Senator Robinson, Senator Rolfes, Representative Stokesbary, Senator L. Wilson.
from the email announcement (March 9, 2022)