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Colorado Ui~lch Ii-etlcnuls Bench Test <br />Tec/n n cal llen~ orcm~lr ~ m <br />4.0 Hydraulic Testing of Bioreactor Cells <br />hi order for hydraulic conductivit<r to be estimated for the substrate. flow rate and other <br />measurements should be made as described below each of the final two weeks of the test (8 <br />measurements in total). A sample table is provided belo~y for clarification. Actual field measurements <br />should be recorded on the H~-draulic Conductivity Measurements sheet provided as Attachment D. <br />1. Suspend floe- to the individual SRBR cells by shuttilig off the timers. <br />2. Measure the height of the reactor drum (should be the same for all events). <br />3. Place a temporary plug/stopper on the outlet hose and place outlet hose in a flo«--measuring <br />device. <br />4. Add three to five gallons of mine ~~-ater to the cell being tested (start with Cell 1). <br />5. Measure the distance from the top of the drum to the top of the ~z-ater. <br />H. Measure the distance from the top of the drum to the top of the outlet hose. <br />7. Measure the distance from the top of the drum to the top of the substrate. <br />8. Remove the stopper plug in the hose and simultaneously start a stopwatch. <br />9. Measure the flow volume leaving the cell at time zero (0) over the course of 15 seconds (0.25 <br />minutes) and record the value in milliliters. <br />10. Replace the plug/stopper and stop the stopwatch after 15 seconds. <br />11. Measure the distance from the top of the drum to the top of the water and record the value. <br />12. Reopen the stopper and let water flow for one minute; replace the stopper and repeat the <br />measurements described in Steps 9 and 11. <br />13. Repeat measurements descr7bed in Step 12, three tunes. <br />14. When ~-ou have completed the measurements for Cell 1, repeat Steps 3 through 13 for Cells <br />2, 3, 4, and ~. <br />12 CMC NRM <br />