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<br />F~~~~ <br />•=ertifi~sates are current. They e>:pire July ~. 1'38. <br />Sedim=_~nt f='c~nd Inspecti~=ins: - <br />4ie ~_c~nfi.rmed {.fie opera.tc~rs sel.f--i.r~spe•=ti~=~n of pc•nds fc~r the ~~nd and <br />Ord puarter> c•f 1987. 4Je found thr re~_ords L-o be .in order. We also <br />=~•nfi.rmed +he wne4:7y i.nspe~=tion c•f {:he =:~~yC•tr= Fond. It is an MSHA <br />sized <_=trr!~=turn, Tf~e reports indicated that sediment ~.,=cumLrlatic~n is <br />within :' :+.~_re feet cif the E~~ per•_ent sediment ~~{;•-~raac ~r~~lume. Tfie <br />operator. pr~~poses t~~ remr_ve thn sediment- .in i;he spring of .1'?88. <br />Design and Construe=ti~~n Certifir_atic_n=_: <br />Ttie rep=•_~rd=_ review a.l=.~~ in~_lu.ded "bservations cif the design and <br />censtructi.on certifi~=aticm=_ f~•r the various sediment ponds and the <br />haul reads. The desiq_n and ~=onstru•=ti.~n ~:ertifi•rations for each <br />strLn_t~-rre were fc•und tc be in order. <br />field Inspection: <br />Tl~e field inspection r~=~mmen•red at the northeast part c•f the mine. It <br />in•_ludPd observations of the various sediment pc•nds, haul roads and <br />r n~ad drainage =control. strut+, ur es, the active mi ni.nq areas (Ashmor ec•, <br />En~Field and Derringer Fits?, ast, disposal ar-ea.s, water monitc~riny <br />sit•ss and areas ~_~f re•=lamatic•n. Additicmal detail •=~~ncerninq the <br />field inspe~:=tine fc~llc~ws: <br />Sediment F'c•nds: <br />The sediment pnnd inspr~ctic~n •_ommenced with the F'yaett i~ul~_h F'ond_ <br />Eki, rte, and #~. Each was found t,,, be in gnc~d repair with f;he <br />exception c,f the upstr.aam elide of the embant~:mcnt ~~•F p.-end ft~. Wo <br />obscr ved one small au11y apprc•~•, i.mat elv S frpa lc•nq and 10 inches <br />deep. Tlie opd~erator indicated ':he feature would be repaired a= <br />_.on as pc~=_sible. 41e als~_ observed an erc•sion fcaa.trare •-.n thn. ~._ul: r_•f <br />i,hr~ light use rr_.ad adjacent to pond 4Y~. It a1== d.rs mi. n~~r in nature <br />?nd the c~peratc~r indicated it tc mould Le repaired a.s .:.on as <br />possi.b).e. r-.t pond it^-. ws ob=.erved an area ~.!heres read drainage flews to <br />the pond. The dra.inaa_ crc•sc_nc. the road before eni-.erin~t the p~_nd. <br />Cc~~_c•nLrt mats were recently applied tc~ the infl~~w c•f the pnnd toward <br />pr•-•vidina a deoree of stabilization. Though very miner in nature <br />e:~diment is bepi.nninq tc~ accumulate a.*, tl,e ~.iprtream end cif the mat. <br />The a~_~_umulated sediment is cau_ing =_ur fe.•.e fl~_ws t:o hypo.=_=<_; the mat. <br />This was evidenced by a small rill at the upstream end along the sicJe <br />:•f the ma.i; when it merts. the ?d.jacent ground. Thr_ oner-atc•r indicated <br />remedir+l •dork dill be performed to corre~.t the pry-~hlem. 4Je al.=_~~ <br />obs~~r~•~ed that each of the spillways at th_ three ponds •=ons.i=_ts of an <br />open ~=hannr-~1 ~=ombined spillway. We observed this same =.i.tuati•~n at <br />many ~:f the sediment ponds, We dis_ussed tt-~e requirement- c.f the <br />requlati:%ns as relates to principal .znd emeraern_y spillway= being <br />_ombined .into one discharo~= structure'. I ind:i•_ated lha.t the <br />!i.nterpetation _~f the ~_~~loradi~ YLI).n at Sr.~_tion :},p~,F has been a <br />matter cif •_entinuina dispute be+ween 7,hr. AFO and the Di visi!~n. 41e <br />rtaviewed and discussed the preamble to the federal rule that was in <br />effect at the time the ~=ol~,rado Program was ~=onditionally approved. <br />The preamble 6asicall.y states there ~=annot be passe..+oe of flow through <br />tfie emer-gen~.y spillway from prey=ipit?.tic~n less than tfie spillway <br />