Laserfiche WebLink
<br />PAGE 3 <br />=ertifi~_ates are current. TI?ey expire July ;. i'33fl. <br />Sediment Fond Inspections: - ' <br />4ie canfi.rmed the ~~perators self--i.nspe~=tic~n of pc~nds for the ~nd and <br />Ord ~LI7YteY^-, r,f 1987. We found the r..=nrds +:~:~ be in order. We alsc~ <br />=~:nfi.rmed t4ie ~.~neF:].y inspe~:+.i~~n c~f {:he C~~y~-~+:e Fond. It is an MSHA <br />sized structure. The reports indi~sated that sediment accumulation is <br />within ,^-, :~cr= feet ~~f the 6~r per~:ent sediment st~-~ragc •~~=plume. The <br />operators proposes to remove the =.ediment in +:he spring cif 19flfl. <br />Design and ~_c~nstructic~n Certifications: <br />TF,e re•=cards review zl=_= ins=laded !~bservati~~ns =~f i;f?e design and <br />•'c•ns•t-ru~.ti.~:~n certifi~rations fc•r the various sediment ponds- and the <br />hanl reads. The desia_n and ..•.•nstructi _:n ~:=r?rti fic_~.ti~ons for each <br />str~_r~_t~-ere were fc,und tc be in order. <br />Fuld Inspr:~=tion: <br />Tlie field inspection commenced at the n~•rthea=.t part ~~f the mine. It <br />irn:luded •_~bservations ~_~f the vari~_~us sediment. ponds. haul roads and <br />rn<:.td drainage _~~ntrol. structures, the active mining area--+~- rAshmoree, <br />En fir-•ld and Derringer Fits?, asf, disposal areas, water monitorinU <br />sites sand r+reas •=•f rep=lamati•.•n. Additional detail ~=onrerninq the <br />field inspection f~-allows: <br />Sediment F'•:~nd=,: <br />The sediment p_.nd inspr=~.tion ~_ommen~red with the F'yaett Gulp=1, F'ond_ <br />lkl, !?~. and #~. Each was found +-o be in gr,r~d repair- with t.hn <br />~~>,cepti:~n of the upstream <_=i de c•f the emban4:mcnt ~_ F p~-~nd 8~. Wn= <br />~.•t?=.erv~~r.-1 r_,ne small gully appr~_~<~mat~ly ~fee1: l~~na and 10 .inches- <br />rdpnp, The opd•erator indicated the feature would be repaired as <br />r~:on as possible. 41e als!~ of?=_er-ved an er~:~sion fe?afi.rrc can the •_ut of " <br />+.hr~ light use road ad.j a~_ent tc p.-end {?~~. It al=== .::.a minor in r-~at are <br />and t!,_ ,-~peratc~r incli•_a.ted iL" t~: would he repaired ~~.s :...n as <br />p~~ssi.bt.e, r;t pond dsS we r,bs.erved an area where read drainage flows t_• <br />the p_~nd. Thr drainage cr.7•sses thq read before en+-er-inc? the pc,nd. <br />C~~conut mats were recently applied tc~ the ?nfl~~w ~•f the pond toward <br />prr~vidi.na_ a degree of stabili:;a+:icm. Though very minor in nature <br />=gdiment is begi.nnino to accumulate at t4?e upstream ~-?nct =~f the mat. <br />1'he a•_cumulated sediment is ~=ausina surfe,ce flews t.~; bypass th_ mat. <br />This was evidenced by a small rill at the upstream end alenq the side <br />:f the m~?+; wheys it mep};c the ,d.Ja,_ent gro~_rnd. Thr? operat~~r indi~_ated <br />remedi;il. work will be perfcrrmed t~= =orre•.t the problem. We e.)== <br />~.•b^:er~•Jr_+d that ea..h .f the spillway= at. +;he three pr_~nd=_ _on ;i=_t.=~ o~f an <br />open ~-honer<•7. .ombined spillway. We ,observed thi<_, =_arr,n :;i.tuatic,n at <br />many ~:~f the <-ediment p•-mds. LJe disco=<_=ed the requirement=_ of the. <br />rr.?nulati_~ns- a<: relates t.. prin~=ipzrl ,,.nd emc•rgen•_y ~pil7ways being <br />:combined into ~~ne discharg•= stru~=tare. I ind.i~_ated ':hat. the <br />i.nterpetation _~f the ~'olor?do rule at Se~_tion 4~.US.f i~?as been a. <br />matter" c•f ~=ontinuinq di<~pute bntwr~?n the AFO and tF?e Di visi~~n. We <br />r<-~vieawed .and disc-ussed the preamble t~~ ';he federal r~_rle that Ada<_- in <br />effe~_t at tFie time tFie C~~l~,ra.dc~ F'r-~-~yram was conditi~~nally appr~:ved. <br />The preamble ba~;ica7.l.y states there •=ann~_t be passage of flew through <br />+;he eme,-gen~ry spillway from precipitation less than +.he spillway <br />