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(d) Permit applications may comply with the requirements of 2.06.8(4) c iii <br />• and (iv) with data collected over a shorter period of time or extrapolated by an expert in the field from documented <br />data on water quality and quantity of similar areas provided that information provided is sufficient to make the <br />determinations required under 2.06.8(5) and that the data used by the expert is included within the permit <br />application, the expert opinion is approved by the Division, and all such data are made available to the public for <br />review and comment. <br />(e) The surveys required by 2.06.8(3) should identify those geologic, <br />h~~drologic, and biologic characteristics of the alluvial valley floor necessary to support the essential hydrologic <br />functions of any alluvial valley Floor. Such characteristics which must be evaluated in a complete application <br />include, but are not limited to: <br />~i) Characteristics supporting the function of collecting water which <br />include, but are not limited to: <br />(A) The amount and rate of runoff and a water balance analysis, <br />with respect to rainfall, evapotranspiration, infiltration and ground water recharge; <br />channels <br />(B) The relief, slope, and density of the network of drainage <br />(C) The infiltration, permeability, porosity and transmissivity of <br />unconsolidated deposits of the valley floor that either constitute the aquifer associated with the stream or lie <br />between the aquifer and the stream; and <br />• (D) Other factors that affect the interchange of water between <br />surface and ground water systems, including the depth to ground water, the direction of ground water flow, the <br />extent to which the stream and associated alluvial ground water aquifers provide recharge to, or are recharged by, <br />bedrock aquifers. <br />are not limited to: <br />(ii) Characteristics supporting the function of storing water which include, but <br />(A) Surface roughness, and vegetation of the channel, flood plain, <br />and low terraces that retazd the flow of surface waters; <br />t~J <br />APPPp~ED JUN 2 8 2000 <br />PR 99-OS 2.06-12 3/5/99 <br />