WAC 392-501-600
| WSR Filing Number | Type of Filing | Date of Filing |
| 14-21-121 | Preproposal Statement of Inquiry | 10/17/2014 |
| 10-01-053 | Permanent Rule | 12/09/2009 |
| 09-12-069 | Proposal Original Notice | 5/29/2009 |
| 09-08-041 | Emergency Rule | 3/25/2009 |
| 09-08-040 | Preproposal Statement of Inquiry | 3/25/2009 |
| 08-09-152 | Emergency Rule | 4/23/2008 |
| 08-09-149 | Preproposal Statement of Inquiry | 4/23/2008 |
| 07-13-035 | Permanent Rule | 6/13/2007 |
| 07-03-131 | Proposal Original Notice | 1/23/2007 |
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