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Spring 2008 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />• <br />'~•.,?a• - ...?-?? r '?:..? ??,,,?;? ----mac <br />1 <br />Z, <br /> <br /> <br /> Figure 16. Crenu1l0; GI.I K 3 z.r;, ,>n ;ne <is;ein -,1&, of the <br /> methane d rainage wells. <br />• ' f An en eclrehnr crack one (Crere•k 4 -,on e) Iocwe d encourl 20 f t,et ea,%'t of the C'rere•k 3 :,one <br /> and cr,c n111ch (Is 0 inc he.s tvicle (Figur e 17). This crack /one, which is located near the <br /> west track of the L1611 road, probably is one of the cracks observed during the shrine -1007 <br /> field visit (ue FiLIure I I of the springy= 1007 report). COnsiderahle healin`l' Of the surface <br /> expression of Crack 4 has Occurred as s hown in Fi` Ltre 17. <br />• 831-032.790 Wright Water Engineers, Inc. Page 28 <br />August 2008