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Leach Potential Test <br />Schwartzwalder Waste Rock <br />• Page Two <br />Please note -annual average creek flow is almost 30 gallons per second. <br />Please use all available pumping capacity to circulate creek water as <br />quickly as possible. Limit will be the maximum flow permitted by spigot. <br />Also, please attempt to maintain a water temperature of no higher than 40° <br />Analytical Procedures - Test No. 1 <br />Circulate water for 10 full days (240 hours). Collect a water sample <br />once per day and analyze the sample for pH. <br />At the end of the ten day period, collect a composite water sample from <br />both containers. Mix well and analyze for the constituents listed below: <br />504 ,~ ~ r„fa <br />Gro Slph %~ <br />Diss 1 As, Ba, Cd, Ch, Pb, Se, Ag, U and Mo <br />Please retain sufficient sample, properly preserved, for <br />analysis of Hg at an outside lab. <br />Test Procedures - Test No. 2 - <br />• This test will be conducted so <br />inches of annual precipitation <br />rock. The spigot on the waste <br />while the water is poured over <br />should be collected in a large <br />collected from the total volume <br />Non-saturated, Precipitation Test <br />that a volume of water equivalent to 15 <br />is poured over the entire volume of waste <br />rock container should remain wide oFen <br />the top of the waste rock. All water <br />plastic container, and a composite sample <br />of water used for the test. <br />Assuming a 30 inch diameter on the waste rock container, approximately <br />46 gallons of water will be required for each test. This water should <br />be DI water or tap water adjusted to a pH of 5.0. <br />After collecting the water from the waste rock container spigot, corer the <br />waste rock container, but leave the spigot open to allow the waste rock <br />to drain and dry out for 24 hours. Repeat this procedure daily for <br />10 consecutive days. <br />Analytical Procedures - Test No. 2 <br />For each of the ten composite samples, send to the lab immediately for <br />analysis of the constituents listed helow: <br />SOq <br />Gross Alpha <br />pH <br />Dissolved As, Ba, Cd, Ch, Pb, Se, Ag, U and Mo <br />• Please retain sufficient sample, properly preserved, for analysis <br />of Hg at an outside lab. <br />