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.- -s- The significance of the impact depends on the baseline condition of the receiving stream(s) as described in 2.04.7(2). If the streams are normally clear (loco suspended solids count) the impact may be significant. If the stream is usuallu muddy during flows (high suspended solids) the impact may not be significant. To minimize the impact the operation may construct sediment control measures for the mine or siltation structures for roads. The discussion should mention that this impact has a "life-of-mine" duration which decreases as reclamation is completed. Other impacts which should be considered are as follows: a. Impacts to Ioca1 or regional ayuife_rs contaminated, dewatered or recharged by the mine (an impact. may be beneficial). b. Short-term or Tony-term impacts to recharge rates (by increasing or decreasing recharge area or permeability). c. Effects on surface water from leachate of refuse piles. d. Increases in sediment and/or salt load from roads, diversions, or mine water pumped to streams. e. Effects on springs or seeps that may be subject to increases or decreases in quality or quantity. This might affect the receiving stream quality or quantity below the spring or seers. f. Impacts to surface water from gravity discharges from portals not sealed at the conclusion of mining. y. Effects cn surface runoff and streams due to subsidence features at the mine. h. Changes in the ion balance of surface water due to exposure of water to bedrocY., refuse, or ground water. 2. The application also needs designs and locations of each water diversion, collecting, conveyance, treatment, storage, and discharge facility to be used within the permit area (2.05.6(3)(b)(iv). T1re preparation plant crash down system designs need to be included in tiro application. 3. Rule 2.05.6(3)(b)(iii) also requires a plan to collect, record and report surface ar,d ground water monitoring data for water quality and quantity. This monitoring plan should be designed to augment existing water characteristics data and verify the statement of probable hydrologic consequences. The plan should be developed in consultation with the Division. X. Climatological Information and Air Resources - Rules 2.04.8, 2.05.4(2)( Deficiencies: 1. R.hat is the source of the climatology information i,n the application? 2. liver what time period was the climatology data collected? 3. Where was the data collected (location, elevation)? 4. P7hat was the a•/eraGe wind velocity during the- course of the year, and :,~hich month was the windiest? 5. What climatological. differences (if any) are expected between the recording station and the mine site? Why? (2.04.8, all of the ahove)