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_ZZ_ Stipulation No. 3 PRIOR TO THE USE OF MINE WATER FOR ANY MINING ACTIVITIES OR DEWATERING OF MINE WATER, TWIN PINES COAL COf4PANY, INC., MUST OBTAIN ALL STORAGE AND WELL PERfAITS REQUIRED BY APPLICABLE STATE LAW. B. Surface Water Two ephemeral drainages, Lewis Gulch and South Oak Creek, drain the proposed permit area and flow into Oak Creek north of the proposed permit area (see Figure 2). Two areas of concern for impacts to the surface water were identified during review of the permit application: 1) general increases in suspended sediment during mining and reclamation activities; and 2) possible long-term effects to the stream channel if the Lewis Gulch Fill were to remain as a permanent structure. These concerns were resolved during the permitting process as follows: 1) The surface water control system was designed to reduce any additional sediment load; and 2) The applicant amended the reclamation plan to include removal of the Lewis Gulch fill (See sections XVII and XVIII of this document}. C. Finding Upon acceptance of the above stipulations, the Division finds the proposed operation is designed to minimize impacts to the prevailing hydrologic balance in compliance with the requirements of this section. CUMULATIVE HYDROLOGIC IMPACT STUDY Rule 2.07.b(2)(c) requires the Division to make an assessment of the probable cumulative impacts of all anticipated coal mining in the general area on the hydrologic balance and to make a finding that the operation proposed in the permit application has been designed to prevent material damage to the hydrologic balance outside the proposed permit area. This Cumulative Hydrologic Impact Study (CHIS) assesses the projected cumulative hydrologic impacts of all anticipated coal mining operations in the general area of the Twin Pines No. 2 Mine. Anticipated mining is defined as the proposed life-oflnine areas for the existing permitted mines and those for which complete permit applications have been submitted to the Division.