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<br />Geld FIIiI MNI Tamp EmMnkttaent Cwedroeelw 9oeeJ~afalaae <br />AnY hirstt suh5de material encountered dtnIIta oonehttctiat ~ be removed and Dlaoad in a temporary <br />stockpile to be processed in the mtIl or placed beck in the tmlirtge area eRa completion <br />'!he final borrow area floor will be graded toward flra pond at a mutirnt~ of 2 peroent abpe. M large taokr <br />wid be removed or the area arced them wiIl be ltlled with fore material w that the roclu wtTl rat be <br />exposed. The excavation highwaU wtTt be graded to a 2:l elope with erg loose mateml end sharp and <br />exposed rock removed. <br />Pond Liner lestall~tlon <br />Pond lirux will be irtstelled in the borrow arm and on the upstream aide of the ttew embartktnettt The rtew <br />liner will be welded ro flte existing liner to provide en irrtpameable barrier W tatlirtgs'water. <br />All stttface irregulmities within the area to be lined tvrlf be smoothed and a layer of send, deceaeposed <br />granite or screened mine dump materiel minus 3/B inch will be placed an the bottom of the tailings area and <br />compacted ttanx a smooth dnen vibratory roller. <br />An anchor batch, 2d-inches wide by 36 inches deep will be exmvated et the top of the boaow arm <br />beckslope and on the top of the embenlmterd. The trench wilt be exmvated at least one foot from the <br />interior slope of the impormdment area. <br />A 30 mil high dzruity polyethylene (HDPE) geamembrane liner wHl be railed out std phtoed oa the <br />prepared surface in a manna that eastees a rtrin®um of dragging over fhe eteLce. All patds wid be <br />ina6aged with a minimum of 12 mcha of overlap required tar had smtittg. All oontad taafaaes far lap <br />joints wr71 be wiped clean of ell dirt and fordpt materiel prig to beet sealing. A 0®paahee cotthoOed hot <br />shoe welder will be used to wtTl be used W produce a doable weld m ell hip joint pa[r]t. 7Le area bdweert <br />the double welds will be ptessurc leafed to lomte arty fiwtly here sal location. All foully tal Ioafiorts will <br />be resealed or art out end new materiel plead, reeled and leafed. Any obvious bears err hales that wero <br />made in the finer mateasl doting instelletion wiIl be repaired. The liner ettrtltoe will be aped fated for <br />pltllWlrs lrt Ule liar etid BII potholes will be I'CpBI[ed ptlol fa accepWtce. The edge of the line. will be <br />placed in the anchor trench end excavated materiel will be used W attchar the lino in plan. <br />Send bags wiE be used to hold liner material in position during irutdlation end prior W depoe~on of tarlittgs <br />on the liner. <br />The HDPE comtgeted undcdrairt line that gom thtottgh the embertkmmt d the bottom of the pond wrTl <br />have a pipe boot placed over the line end the boot will be hat Baled err clt®icafly Baled to the HDPE fete. <br />The pipe boot wid be heat sealed to fhe line. <br />Underdrafn Inshilllatloa <br />A winch HDPE non-perforated cantgated tubing with two anti-seep collets wiU be pleoed an the southwest <br />side of the new embanlaaent at the same height az the top of the existing embertlunent The tubing wt11 go <br />completely through the embattlement and should be hand compacted around the tubing end collazs so that <br />no piping err the outside of Utz tubing cart occur. Sutflcerd fill should be placed over the top of the tubcrg <br />and bend ooropected so that motorized oontpactas and bevy etptipment mrutot cntslt err otherwise injure <br />the ttrbdrtg.dteirtg subsequrnt embenlttnent lifts. The tubing will be booted dutirtg finer instsllaticn wAh a <br />HDPE boot on the inside of the pond A valve box, valve and pump w0l be placed on the aueride of the <br />pmtd by Ute tttiR opaaWrs. <br />