WAC 480-75-250
| WSR Filing Number | Type of Filing | Date of Filing |
| 19-14-118 | Permanent Rule | 7/03/2019 |
| 19-10-074 | Expedited Rule Making | 5/01/2019 |
| 14-19-001 | Permanent Rule | 9/03/2014 |
| 14-10-082 | Proposal Original Notice | 5/07/2014 |
| 14-05-089 | Preproposal Statement of Inquiry | 2/19/2014 |
| 08-12-045 | Permanent Rule | 5/30/2008 |
| 08-07-080 | Proposal Original Notice | 3/19/2008 |
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