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EXHIBIT G -WATER INFORMATION The location and configuration of any specific stormwater control structures that will be installed at the site per the stormwater Management Plan that the applicant will be seeking need to be shown on an appropriate map within the application. This information is necessary for accurate calculations of financial warranty amounts and to demonstrate that the operation has been designed to minimize impacts to the prevailing hydrologic balance. Item 1 of Exhibit G states that "Irrigation water to downstream users will be passed through with no changes". However, Item 1 of Exhibit E -Reclamation Plan indicates that the reclamation plan for the site includes "installation of an irrigation system". Please clarify this apparent inconsistency. If the applicant is proposing any changes or modifications to the irrigation system presently existing within the affected area, then specific details should be provided in the application regarding the design, location and dimensions of the proposed system. These details should include: 1) A description of how irrigation water passing through any portion of the proposed affected area will be routed through and/or around disturbed areas and newly reclaimed areas such that erosion and sedimentation will be effectively controlled; 21 How continuation of flows to water users wilt be maintained during and after the conclusion of mining, and 3) How adverse impacts to irrigation water quantity and quality will be minimized. Item 2 of Exhibit G states that "Ponding of seep water for ORION PIT operations may be requested from authorized agency". Please be aware that if the gravel extraction operations proposed by the applicant involve exposing groundwater in the pit, the State Division of Water Resources will need to be contacted regarding obtaining a well permit and providing an augmentation plan for evaporative losses. Attached to this review letter is a copy of a July 22, 7 997 Division of Water Resources report stating that "The proposed operation does not anticipate exposing groundwater. Therefore, exposure of groundwater must not occur during or after mining operations". Item 3 of Exhibit G states that "there are no known springs, stock ponds or wells on the affected land". Please be aware, however, that Rule 6.4.7 (21 (al Requires that the applicant locate on the map (in Exhibit C) tributary water courses, wells, springs, stock water ponds, reservoirs, and ditches on the affected land and on adjacent lands where such structures may be affected by the proposed mining operations. Not all stock water and other types of ponds and water impoundments known to exist within the hydrologically adjacent area are clearly shown on the Exhibit C map. Additionally, the Division has received correspondence from surface owners situated immediately down gradient from the proposed affected area (Bill & Carrie Baikie) indicating that several springs and associated trout ponds presently exist on their property. Please revise the Exhibit C Map to show all water wells, springs, ponds, reservoirs, and ditches on the affected and adjacent lands. In accordance with the requirements of Rule 6.4.7 (2) (bl, please identify all known aquifers within and adjacent to the proposed affected area. In accordance with the requirements of Rule 6.4.7 (2) (cl, please submit a brief statement or plan showing how water from dewatering operations or from runoff from disturbed areas, piled material and operating surfaces will be managed to protect against pollution of either surface or groundwater. In accordance with the requirements of Rule 6.4.7 (3), please provide an estimate of the project water requirements including flow rates and annual volumes for the development, mining and reclamation phases of the project. Also, per the requirements of Rule 6.4.7 (4), please indicate the projected amount from each of the sources of water to supply the project water requirements for the mining 00246 6