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0 2.05.3 <br />Three or more gob vent boreholes GVBs are required over each longwall <br />panel. Additionally, exploratory holes will be drilled within the permit <br />boundary. Run -off from the related drill pads may not go through a treatment <br />facility such as a sediment pond. Run -off from the pads that does not report <br />to a sediment pond will be filtered through a sediment fence. Design of <br />sediment fences for drill pad configurations are presented in Volume III, <br />Exhibit 8 beginning on pages Exh -8 —107 and Exh -8 -223. The three typical <br />drill pads are designed on a 3H:1 V slope, 5H:1 V slope and 10H:1 V slope. <br />The typical sediment fence configuration, berms and ditches for the various <br />slopes and pad sizes are shown on Maps 36, 36a and 36b. The following <br />table lists each drill hole and its design drill pad: <br />r � <br />PR -12 2.05-43- 2/10 <br />A�P>� ov6D <br />It�16�1a <br />