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06/08/88 12:68 'i~`441742b CITY/EI.K RIVER X003 <br />Page 2 <br />June $, 1 g9S <br />8. "i~1e engineering report shall be modified to include procedures which will be used m protect tha <br />batrter IayerunderlYing the dentcslitiatz debris during filling operations considering ilze physical <br />chsracteristics of the waste 1ztateriai, <br />9. The plan sheets and cngitxeering report sha11 ba madi>F`ied to indicate the cttuztagement of LFCr <br />condensate in a mannee consistent with that of N!S W ieachate. <br />l t), ~'he stu•#'sce water nian~;emant plan shall be ittaditicd to tie ~ttio existing and future suriace water <br />control features for closed pgrtions ~f the Lvest slvptr. Surface w.3ter poztding areas within tlt~:1311 <br />area shall tic el,i,~,sted, ~~ design tiFsw~face wastx control structures shall Ue rnodifted to provide <br />a CantttlU4us t1T.l3I C4Vtrr Sy5[zrtl. <br />! I. The pr4pct5ed leschate snanagemr:ne systenn shall be modified to eli,ninate pt~rential problems with <br />operatic~rt and maintenance. Specifically, the letlchatc sump area and force main shall be designed <br />to provide izostprotection, <br />I?. ping! c©ver slapcs shall be cattslracted with a maximun14H:1V grade in accordance with approved <br />plans. All Erausition areas where s:lopcs chattgc: gradt4 shall not e.cceed 4H:1 V, <br />17. "lhe leaehate collection Gild rtxt~nagement system sha11 be operated to maintain a ma.Yimum Head of <br />one foot on the >7•~trrier Layer for the liner. <br />l~. A'b0 toot buffer ar~~-~, shall U~ maintained bet~vecn the wa5le aird the propony line. if cornpliaaic~ <br />bouztdary wells fire required bcyartd the pzoperty bourticlztry; a variance team the ~olitl Waste <br />1Vlanztgement Rules will be required. <br />'!he May ~ 1, 199A technical meraorartdun~ prepaerd by Wenck Associates ~vhiah provides <br />supplertaental tlosign in.forniation shall be incorporated into the modified plan sheets rind engineering <br />report. <br />Tftherca are any additional oomnxznts ar questions regarditlg this matter, please contest us. <br />Sinceaely, <br />Bill Acinstron~ <br />Ntirmesota l'P~o'llution C;onLea! Agency <br />Steve Rr~hll' <br />City ot" F.lk River <br />cc: .Iohn ICellzls, Elk River I,andfi11 <br />Matthew Ledvina, Liesch ,Associates <br />Jlm Simonet, ERecaTeeh IVl;idwest, rnc, <br />>2od Ambrosie, Wettek Associates <br />.r° <br />t:~C~ <br />~~d' !., ~ <br />~-°' 1Jave'Luaas. -~ . <br />Shcrbu~e'Caunty <br />~~ . <br />~.. <br />l~brnnnelpr3g•~f1132iH1:i11t980603.dna <br />