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Section 816.57 (a) Continued. <br />authorized surface mining activities closer to or through such a stream <br />upon finding-- <br />(1) That the original stream channel will be restored; and <br />(2) During and after the mining, the water quantity and quality from <br />the stream section within 100 feet of the surface mining activities <br />shall not be adversely affected. <br />(b) The area not to be disturbed shall be designated a buffer zone and <br />marked as specified in Section 816.11. <br />(c) A stream with a biological communit}~ shall be determined by the <br />existence in the stream at any one time of an assemblage of two or more <br />species of arthropods or mulluscan animals which are-- <br />• (1) Adapted to flowing water for all or part of their life cycle; <br />(2) Dependent upon a flowing water habitat; <br />(3) Reproducing or can reasonably be expected to reproduce in the water <br />body where they are found; and <br />(~+) Longer than 2 millimeters at some stage of the part of their life <br />cycle spent in the flawing water habitat. <br />Stream buffer zones have been identified on maps of Energy PSines <br />No. 1 and 2 Hydrology (Flap 13) and Eckman Park Rydrology (Map 14), <br />and Energy Mines No. 1 and 2 Ptine Plan (Map 1) and Eckman Park <br />P1ine Plan (Map 2). Intermittent and perennial streams in the <br />mine plan area were initially found to qualify far buffer zones <br />and mining was planned around the identified buffer zones. The <br />ephemeral tributaries to these stream channels were found by field <br /> <br />816-67 <br />