Section 010. Definitions (Rule 10)

Unless the context otherwise requires, the following definitions govern these rules. (3-30-23) 01. Board. The Idaho Water Resource Board. (3-30-23) 02. Director. The Director of the Idaho Department of Water Resources. (3-30-23) 03. Department. The Idaho Department of Water Resources. (3-30-23) 04. Mine Tailings Impoundment Structure. Any artificial embankment which is or will be more tha n thirty (30) feet in height measured from the lowest elevation of the toe to the maximum crest elevation constructed fo r the purpose of storing mine tailings slurry. (3-30-23) 05. Mine Tailings Slurry. All slurry wastes from a mineral processing or mining operation. (3-30-23) 06. Mine Tailings Storage Capacity. The total storage volume of the impoundment when filled wit h tailings to the maximum approved design storage elevation. (3-30-23) 07. Borrowed Fill Embankment. Any embankment constructed of borrowed earth materials an d which is designed for construction by conventional earth moving equipment. (3-30-23) 08. Reservoir. Any basin which contains or will contain the material impounded by the mine tailing s impoundment structure. (3-30-23) 09. Owner. Includes any of the following who own, control, operate, maintain, manage, or propose t o construct a mine tailings impoundment structure or reservoir. (3-30-23) a. The state of Idaho and any of its departments, agencies, institutions and political subdivisions; (3-30-23) b. The United States of America and any of its departments, bureaus, agencies and institutions ; provided that the United States of America shall not be required to pay any of the fees required by Section 42-1713 , Idaho Code, and shall submit plans, drawings and specifications as required by Section 42-1721, Idaho Code, fo r information purposes only; (3-30-23) c. Every municipal or quasi-municipal corporation; (3-30-23) d. Every public utility; (3-30-23) e. Every person, firm, association, organization, partnership, business, trust, corporation or company; (3-30-23) f

the fees required by Section 42-1713 , Idaho Code, and shall submit plans, drawings and specifications as required by Section 42-1721, Idaho Code, fo r information purposes only; (3-30-23) c. Every municipal or quasi-municipal corporation; (3-30-23) d. Every public utility; (3-30-23) e. Every person, firm, association, organization, partnership, business, trust, corporation or company; (3-30-23) f. The duly authorized agents, lessees, or trustees of any of the foregoing; (3-30-23) g. Receivers or trustees appointed by any court for any of the foregoing. (3-30-23) 10. Alterations, Repairs or Either of Them. Only such alterations or repairs as may directly affec t the safety of the mine tailings impoundment structure or reservoir, as determined by the Director. (3-30-23) 11. Enlargement. Any change in or addition to an existing mine tailings impoundment structure o r reservoir, which raises or may raise the storage capacity of the structure, as defined in Rule Subsection 010.06. (3-30-23) 12. Days Used in Establishing Deadlines. Calendar days including Sundays and holidays. (3-30-23) 13. Certificate of Approval. A certificate issued by the Director for the mine tailings impoundmen t structure listing restrictions imposed by the Director, and without which no new mine tailings impoundmen t structures shall be allowed to impound mine tailings slurry or water and no existing impoundment shall be allowed t o impound water or continue deposition of mine tailings slurry. The structure will be recertified following the sit e inspection scheduled according to the Hazard Classification assigned by the Department, unless the Directo r determines that the structure is unsafe. (3-30-23) 14. Engineer. A registered professional engineer, licensed as such by the state of Idaho. (3-30-23) 011. -- 024. (RESERVED)