2017-12-21_PERMIT FILE - M2017049 (105)

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connections for ground water and surface water • More than 1.2 billion years of tectonic activity has created a hydraulic fracture system network that is too complex to interpret or predict water movement • Many factors required to understand how groundwater is stored or transmitted are undeterminable in this area Geologic Settine • Groundwater flowing down gradient MUST cross the intersection of the UTE Thrust Fault Zone,highly faulted/fractured Zones in Little Turkey Creek • After flowing through this conduit of faults/fractures,the recharge water will be distributed into the alluvial gravels and the Manitou/Fountain Formations • The Paleozoic rocks'permeability and porosity have been enhanced by unevenly distributed localized faults/fractures • Because of the billion-plus years of missing rock(unconformity) the fault/fracture recharge conduit may not directly coincide with the surface drainage that is being influenced by surface topography • Orientation and quantification of the fracture/fault systems will be difficult because of the variable tectonic forces involved over this extreme time period Interpretation of Hydrologic System with Existing Data Hydro-Logic Solutions, Inc.and Transit Mix have stated that they do not anticipate any impacts beyond"de minimis"impacts. Seven monitoring wells were drilled to collect data used to construct the potentiometric surface contour map. With this limited number of control points the map in figure G-6 is only one of MANY valid interpretations that could be drawn. The numerical model that was generated to predict the changes to the hydrologic balance was based on optimistic estimations of many unknowable parameters. The model parameterization values were not provided in the application and they are essential to determining the validity of the model. It appears that other sources of hydrologic/geologic information were not incorporated in the analysis. If the database of information used to build the model is not adequate to estimate the parameters in the numerical model with sufficient precision, the usefulness of this model to make important decisions is VERY limited. As the computer scientists say,"GIGO"-garbage in garbage out. Surface Water Surface waters and creek flow will be affected by quarry operations.