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Hydrogeology <br />1. <br />The Permittee shall conduct a program to evaluate <br />hydrogeologic conditions at the facility or refer to such a <br />Ii. • r previously with - Part B. This <br />program <br />shall provide following • r:•. <br />1. A description of the regional and facility <br />specific geologic and hydrogeologic <br />characteristics affecting groundwater flow in the <br />saturated and unsaturated zones beneath the <br />facility, including: <br />contacts;i. Regional and facility specific stratigraphy: <br />description of strata including strike and <br />dip, identification of stratigraphic <br />ii. Structural geology: description of local and <br />regional structural features (e.g., folding, <br />faulting,tilting, jointing, ` <br />iii. Depositional history; <br />iv. Regional and facility specific groundwater <br />flow patterns; and <br />V. Identification and characterization of areas <br />and amounts of recharge and discharge. <br />b. An analysis of any topographic features that might <br />influence the groundwater flow system. <br />C. Based on field data, tests, and cores, a <br />representative and accurate classification and <br />description of the hydrogeologic units which may <br />be part of the migration pathways at the facility <br />(i.e., the aquifers and any intervening saturated <br />and unsaturated units), including: <br />i. Hydraulic conductivity and porosity (total <br />and effective); <br />ii. Lithology, grain size, sorting, degree of <br />cementation; <br />iii. An interpretation of hydraulic <br />interconnections between saturated zones; and <br />iv. The attenuation capacity and mechanisms of <br />the natural earth materials (e.g., ion <br />exchange capacity, organic carbon content, <br />mineral content etc.). <br />e. Based on data obtained from groundwater monitoring <br />6 <br />