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RUG 09 '96 12~23PM PERBODY WSTN SENECA MINE III IIIIIIIIIIIIIIII P 2 <br />sss <br />ENEC <br />s ~a,~om~.m Seneca Coal Company <br />..dtuque t 9 , 19 9 6 <br />Ms, Susan Burgmaier <br />Division of Minerals and Geology <br />1313 Sherman Street, Rootq~.215 <br />server, CO 80203-2273 <br />RE: YOdSt *~line Permit C-94-08a, POrid 10 COriStruCtlOn <br />Dear Ms. 8urgmaier: <br />This corresFondence is in response to your letter dated August 7, <br />1996 with regard to the construction of sedimentation pond 10. I <br />apologize fo.r any problems in communication with the Division, but <br />meat of this could have been handled in a phone conversation as we <br />did earlier today. <br />A.s far as the construction of pond 10, we started stripping topsoil <br />on Juiy 24th. That morning Chuck McCulloh, our construction <br />fo;~eman, notified me that we should have our geotechnical <br />consultant come out and take a look at the proposed site. Mr. Brian <br />ue-r,, P.E. of DiorthWeat Colorado Consultants (NWCC1 arrived and we <br />both co.rducted an inspection of the dam site. Haled on our field <br />investigation, Srian prepared the enclosed letter with his <br />recosrraendat:.ons for this project to proceed. I would like to point <br />oiz'c that NWCC prepared the Geotechnical Investigation, Attachment <br />:L3 5, wk,ich is contained in the permit package. Since the 24th, <br />Brian has personally inspected the site three times and has had his <br />fial~ technicians here once or twice daily doing compaction <br />testing, soil sampling, etc. with the exception of the week I was <br />on vacation; when all we did was push topsoil and start <br />construction of the keyway, I have visited the site at least once <br />o:r twi.ce per day. Finally, Chuck has been present at the site the <br />entire time. <br />As L•ar as the keyway and embankment material, it is coming from <br />haul road cut material between stations 13+00 and 15+00 of haul <br />read "B" an3 not the facilities area. Any drainage from this area <br />i.s following the plane for the haul road itself. All soil testing, <br />lal:oratorlr information, stability analysis, etc. is being performed <br />by NWCC. a.r; we mentioned on the telephone all geotechnical work <br />associated with the construction of pond 10 will be included as an <br />Appendir_ to 'the As-Built report. With regard to the horizontal <br />drainage system, based on Brian's recommendations we have "beefed <br />>>p" what i.s actually approved and contained in the design report. <br />Seneca Coal Company • P.O. Drawer D • Hayden, Colorado 87899 <br />Telephone (970) 278.7707 • FA1( (970) 2783014 <br />