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state Rea. <br />bilk aTmmn;~pn ru~te j.s stored in a 40 ton powder silo. • <br />Fuel Storaue. Seneca II Mine has the capacity for storing <br />43,000 gallons of diesel fuel. Rhe three main tanks (10,000 <br />gallons each) are shown on E~ibit 12-2. Portable field <br />tanks, of 13,000 gallon capacity are mounted on skids within <br />the permit area. A 8,000 gallon gasoline tank is stored by <br />the maintenance building. <br />RIIIdOFF ADID SIDII+IFNP OONIR2pL SPR[J(.'IIJItFS. <br />'IYte existing surface water and sediment control strictures are <br />d~:~,ss~~ on pages 7-90 arxi 7-91 and shown on Eihibit 7-7. <br />DOMESTIC WATFSt WELL. <br />A new water well was drilled in September 1977 to replace an <br />inadequate shop well. ZSie new well is located east of the <br />welding shop as shown on Eadtibit 12-2. • <br />Total Depth of Well - 600 feet <br />Casing Size - 4-1/2" I.D. (Plastic) <br />Putting Fate - 35 gpm <br />Drilling Prooedin-es - Trioone (6-1/4"), air-foam injected <br />drill <br />CcaQoletion - Plastic well casing (4-1/2" I.D.) placed frcnn <br />surface to 56o feet; plastic well screen placed <br />fran 560 to 590, gravel packed, bottmn capped; <br />rubber packer placed at 390 feet; ~Zted Ervin <br />390 feet to surface. <br />Water consumption at the mine is for restavoms, shower <br />facilities, drinking water, acid general shop use. Daily usage <br />fran the above amounts to approximately 950 gallons per day. <br />Water quality data for the shop well are reported in the • <br />12-22 Revised 12f10/92 <br />