id-02-0609-2501: Rules Governing Invasive Species and Noxious Weeds
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The new temporary rule restricts access to a section of the Snake River to manage an infestation of invasive quagga mussels, which pose a threat to the local environment and water use. Watercraft and other conveyances are prohibited in this area unless specifically authorized, and they must be inspected and decontaminated before launch or exit.
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The rule, in full
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Terri Kondeff Director MEMORANDUM TO: Senators NICHOLS, Zito, Semmelroth and, Representatives ANDRUS, Raymond, Mathias FROM: Alli Olson - Legislative Drafting Attorney DATE: October 06, 2025 SUBJECT: Temporary Rule IDAPA 02.06.09 - Rules Governing Invasive Species and Noxious Weeds-Adoption of Temporary Rule - Docket No. 02-0609-2501 We are forwarding this temporary rule to you for your information only. No analysis was done by LSO. This rule is posted on our web site. If you have any questions, please call Alli Olson at the Legislative Services Office at (208) 334-4845. Thank you. Attachment: Temporary Rule PaulHeadlee,DeputyDirectoratt Drake, Manager Keith Bybee, Manager April Renfro, Manager Norma Clark, Manager Legislative Services OfResearch & Legislation Budget & Policy AnaLegislative AuditInformation Technology Statehouse, P.O. Box 83720 Tel: 208–334–2475 Boise, Idaho 83720–0054 legislature.idaho.gov IDAPA 02 – DEPARTMENT OF AGRICULTURE 02.06.09 – RULES GOVERNING INVASIVE SPECIES AND NOXIOUS WEEDS DOCKET NO. 02-0609-2501 NOTICE OF RULEMAKING – ADOPTION OF TEMPORARY RULE
Effective Date
The effective date of the temporary rule is September 29, 2025. AUTHORITY: In compliance with Section 67-5226, Idaho Code, notice is hereby given this agency has adopted a temporary rule. The action is authorized pursuant to Sections 22-1904, 22-1907, and 22-1909, Idaho Code. DESCRIPTIVE SUMMARY: The following is the required finding and concise statement of its supporting reasons for adopting a temporary rule: Invasive quagga mussels have been found in the Snake River. Left unchecked, quagga mussels pose a significant threat to the health and safety of Idaho’s environment and water use for irrigation, recreation, hydropower generation, and municipal uses. Accordingly, the Director has exercised the authority granted under Idaho law to quarantine certain areas of the Snake River to facilitate chemical treatment for the purposes of eradication. This new temporary rule updates IDAPA02.06.09.135 to close the river to use by watercraft and other conveyances not otherwise directed or authorized by the Director for the purposes of treatment. TEMPORARY RULE JUSTIFICATION: Pursuant to Section 67-5226(1)(a), Idaho Code, the Governor has found that temporary adoption of the rule is appropriate for the protection of the public health, safe, or welfare. The closure will ensure the safety of the public, department personnel, and contractors during the treatment application period. FEE SUMMARY: Pursuant to Section 67-5226(2), the Governor has found that the fee or charge being imposed or increased is justified and necessary to avoid immediate danger and the fee is described herein: There is no fee being charged by this temporary rule. ASSISTANCE ON TECHNICAL QUESTIONS: For assistance on technical questions concerning the temporary rule, contact Lloyd Knight, Deputy Director, at (208)332-8615. DATED this September 29, 2025. Lloyd B. Knight, Deputy Director Idaho State Department ofAgriculture 2270 Old Penitentiary Road P.O. Box 7249 Boise, ID 83707 Phone: (208) 332-8615 Email: lloyd.knight@isda.idaho.gov IdahoAdministrative Bulletin Page 147 October 1, 2025 – Vol. 25-10 DEPARTMENT OF AGRICULTURE Docket No. 02-0609-2501 Rules Governing Invasive Species & Noxious Weeds Adoption of Temporary Rule THE FOLLOWING IS THE TEXT OF THE TEMPORARY RULE FOR DOCKET NO. 02-0609-2501 (Only Those Sections With Amendments Are Shown.) 135. SNAKE RIVER QUARANTINE. ISDA has issued a quarantine of the Snake River from Hansen Bridge to the partial bridge structure at the bottom of Yingst Grade (known as “the Broken Bridge”, “Yingst Grade Bridge”, the “Old Interstate Bridge”), which is approximately one-half (1/2) mile upstream ofAuger Falls to contain and treat quagga mussels. Launch of watercraft or other conveyances in this section is restricted to the hours when the watercraft inspection station at Centennial Waterfront Park is open, or other such stations that may be posted at other locations in the quarantine area. All watercraft and conveyances must be inspected and decontaminated by agency personnel or an assigned entity prior to launch and prior to exit from the water. This requirement applies to all motorized and non-motorized watercraft or other conveyances of any size, including paddle boards, kayaks, and water-exposed recreational gear. Effective September 29, 2025, access to the river by watercraft or other conveyances of any size, including paddle boards, kayaks, and water-exposed recreation gear is prohibited between Hansen Bridge and Pillar Falls. The prohibition will remain in effect unless amended by the Director at the conclusion of the active treatment and dissipation period. (11-9-24)T(9-29-25)T IdahoAdministrative Bulletin Page 148 October 1, 2025 – Vol. 25-10
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