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<br />leaning. Also, there appeared to be a very slight bulge on the south side of the pile. <br />Whether this is a sign of relatively recent slumping, a consequence of a repair job <br />performed on the one-time smoldering pile or a remnant of a much earlier stability <br />problem, I do not know. Fourth, there does not appear to be any subdrainage system or <br />alternative subdrainage system, as required in Rule 4.10.3. Fifth, the front one third of the <br />top of the old gob pile drains pile runoff onto the outslope of the old waste pile. Rules <br />4.10.3(2) ,4.09.2(7) and 4.09.2(5) require diversion of surface runoff off of the waste pile <br />and not down over the pile outslope. The back nvo thirds of the top of the old gob pile <br />drains water away from the pile outslope and into a diversion ditch, as is required by the <br />rules. <br />As you can see, the problem is difficult. Presently, the pile appears to be stable and very <br />well vegetated. Larry and I would rather convince the operator to provide the proper <br />demonstrations that the pile is stable, rather than rework the waste pile. Your assistance is <br />needed in determining whether or not it is feasible for the operator to provide the proper <br />demonstrations and geotechnical testing to show that the old waste pile has been built <br />according to the regulations and as designed. <br />To this memo I have attached the original memo I had given to Larry. That memo <br />provides some background as to the history of how the old gob pile ended up the way it <br />did. In my office I have additional material, such as the engineer's quarterly inspection <br />reports, photographs, the factor of safety statements and waste pile designs. If you would <br />like to review this other material, please let me know. As always, thanks for your help! <br />Attachment <br />c:\wp61 \bowie 1 \oldgob2 <br />