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Gold F1i11 Mill Adequacy Review Realxxtsea May 31, 1995 1 A map (Exhibit E-2) has been indudad that shows the new pe~R botmduy hued on the raaw ~lotgr embertlattenr, proposed barrow ernes topsoil pile loatioru, and tn7iupt'4odt coed' alrxege 2. 71te lend owneralup map (Exhibit A-1) ha+ been included in this submitW. 3. The miffing agnxment between COM, Inc. and Mi Vida Erttapmaea has been irtcltdedm this submittal 4. If COhi, Irtc. plaits to mule on a,ty of We cleans under its ownership, a separate pemtit application wi0 be submitted to the CM LRB end approved befott any muting taken place. Any nutorg on dartm lhet are covered undo the milling agreement with Mi Vida Enterprises will be covered under a separate pemrd application that will be submitted to CMLRB by Mi Vida 5. A reclentatian map is enclosed (Exttibit D-I) that drJOreata the pa~rrg rues that wig rerrran u a post operetiortel feattae. COM, ]nc. will requcst a inning for indushieUcommerriel for the bu8dhrg. 6. COM, Inc. proposes using material from two barow ueaa u sotuoe materiel for the new tar 'large embetdanent. The fiat borrow area is located above the preeerd embentmerrt and is ootlcaed err Exhibit Frt. The materiel u represented by two samples tDet wen talmn from the presertt lerlutge embanlmtertttrsed the same barrow area for conshuction. 'Lhe material for eonshuctiort ie u foIloavs: Description: Poody graded Bard with sr7t and gravel Dry Denary: 118.8 to 123A @CF Optimum Water Content 10.0 tb 11.IX Coheaote 0 Friction Angle: 33.8 degrees The samples do not aPPeu to Dave arty viable acidic material of then ahhortgh veins aormaororg acidic materiel may be pzeaent in the boQOrv area. Any aodic ataberial tteIl be separated end pot in the core of the dam or tpnporsnly stockpiled and placedm tDe anpotusdttterrt at6er completion. The second barrow errs oauisb of erg or portiasts of the WDibe Clrnd, Wynom and Oscar mme drmrpa flat ere situated south of the mill bur7ding. Samples for shear and proctor tearing have not been submitted to n besting laboratory, however, most of the cbarecteristica should be samlar to the materiel above tht axistutg teilutgs embattlzuent since ttre materiel was excavated from tlu Boulder granite and overlying decomposed granite material that make up the ewrrpllea taken from the present embankment 'There is more clay binding in the dump materiel that is probably oartastertt with the higMr day car~rtt of the vein material in the Gold Iirll area 7'he dumps have a higher acidic mrtterrt (percentage riot known), again because of the highs portion of veal mate9al that was excavated and placed on the mine dumps. AD of the mine dump mabnial will be uaedm the core ofthe dam so that a covemtg (atvt®tmt S feat) of non acidic material can be plead on top to ad as en oxidation homer. 'The Dare material wid mtbe subject to any oxygenated water Bow Itom the lsiiirtgs that might aatae learbing mob3ty became Ure pasd is lined and aE water wifl be certtauted wilh'vt the fora. The letter dated May 2,1995 wu in error about the anatmt of topsoil snipped behind the present railings Pond. 'The audy topsoil stopped extends to the area wither the present pond bens lore. All topsoil that will be shipped over the new boaow ores wr'8 De stoolcpled and preserved fac me dttorrg reclamation. 7. No brtildurgs or outer shuchmes wrL be built on the pemait area without a teohrdcal revis;orr su6mulad to the Division for approval woh boding revisions std disposal afipuh>dom.