Laserfiche WebLink
B2 i27~94 17:32 E 702 376 0917 ncClel land Lab 23 <br />13 <br />• l lutnidified air, generated by 5pargittg filtered, c(tlnprecsed air in[o D.l. H2O contained in <br />a temperature controlled (3(1°C) glass vessel, is pumped upwards through the solids the <br />next 3 days of the cycle. On the 7th day, the solids are flooded with D.1. HyO at pH 5.4 <br />to 5,7 (pH not adjusted). l~looded solids are allowed to soak for one hour. After one <br />}lour, solution is allowed [o Jrain freely from the solids. Effluent volume is measured <br />atml the pit is measured immediately. Samples are taken immediately for acidity and <br />alkalinity analysis and are (lelivered immediately to the analytical laboratory without <br />prescrvxdon. '1'Ite analytical laboratory will analyse for ncidity and alkalinity within 24 <br />(tours of sample acquisition. The retnaindcr of the weekly eftluettt is filtered through a <br />Q.7µm filter w produce an cxuact. The weekly extrurt is analyzed within R hours for Eh <br />(etnt), 50~, Fe„ Fe2a, :tlnl Fe". The seven day cycle is repeated until the kinetic test is <br />terminated. <br />Four week voluntc weighted extract composites elre preserved attd submitted for tttelaLs <br />analysis. The suite of metals analyses will be based rot 1CP metals analysis results for <br />the waste rock feed, and on site specific catcents attd project objectives. <br />A summary sheet for the Mod HC test procedw'e is attached for your reference. <br />• <br />l <br />• k4c('I:Iit.l.rWl) 1.A FSURA'I'O!t)I:ti, INIT. <br />