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E. Acid-forming and Toxic -forming Spoil <br />Based upon information provided by BRL, the Division does not anticipate that <br />any acid-forming or toxic -forming spoil will be encountered during the operation <br />of the Bowie No. 2 Mine (4.05.8(3)). <br />F. Impoundments <br />The applicant has not proposed the use of alternative design criteria and <br />specifications for impoundment design and construction (4.05.9). <br />G. Surface and Groundwater Monitoring <br />The applicant will conduct monitoring of surface and ground waters in a manner <br />approved by the Division. The surface and groundwater monitoring plan is <br />specified in Section 2.05.6(3)(b)(iv) of the Bowie No. 2 Mine permit application <br />(4.05.13(1)). BRL monitors surface water quantity and quality in perennial <br />streams, irrigation ditches, ephemeral drainages, and several springs, both <br />upstream and downstream from the areas affected by mining. Ground water <br />levels and quality are monitored in the D-2 coal seam, the B-2 coal seam and the <br />North Fork alluvium. Monitoring and reporting of mine inflows was added to the <br />hydrology monitoring plan with the approval of Permit Revision No. 2. <br />H. Transfer of Wells <br />The Division does not propose to approve the transfer of any exploration or <br />monitoring well (4.05.15(13)). <br />I. Discharge of Water into an Underground Mine <br />1. The Division is not proposing to approve the diversion of water from a surface or <br />underground mine into underground mine workings. <br />Stream Buffer Zones <br />The Division does not propose to approve surface or underground mining activities <br />within 100 feet or through a perennial stream or stream with a biological <br />community (4.05.18(1)). <br />K. Probable Hydrologic Consequences <br />BRL provided an analysis of the Probable Hydrologic Consequences to be expected as a <br />result of mining and reclamation operations at the Bowie No. 2 Mine. The analysis is <br />presented in Section 2.05.6(3)(b)(iii) of the permit application document. Possible <br />hydrologic impacts to the local surface and ground water systems are summarized below. <br />Surface water systems directly above the mine working, and within the permit area, could <br />be minimally impacted due to mine subsidence. Surface cracking resulting from <br />subsidence could occur within the ephemeral and intermittent stream channels which <br />overlie the mine; however, such impacts should be minimal and surface cracks should fill <br />28 <br />