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_:.. ,:. <br /> <br />_2_ <br /> <br />9. Sludge will be monitored quarterly for the following parameters. <br />Percent Total Solids, o <br />Percent Volatile Solids, ~ <br />pH <br />Conductivity, umhos/cm <br />Ammonium Nitrogen, mg/kg <br />Nitrate Nitrogen, mg/kg <br />Organic Nitrogen, mg/kg <br />Total Nitrogen, mg/kg <br />Total Phosphorus, mg/kg <br />Total Potassium, mg/kg <br />Total Lead mg/kg <br />Total Arsenic, mg/kg <br />Total Cadmium, mg/kg <br />Total Chromium, mg/kg <br />Total Copper, mg/kg <br />Total Mercury, mg/kg <br />Total Nickel mg/kg <br />Total Selenium, mg/kg <br />Total Zinc, mg/kg <br />e <br />The monitoring should be composite samples with methodology in accordance <br />with Department of Health requirements. Reports should be submitted <br />quarterly. After the second quarter, the Division will reconsider whether <br />anu sludge monitoring will be required to continue. <br />With the acceptance of Coors of the above conditions the Division hereby <br />approves the minor revision to utilize sludge at the mine site. Approval <br />of this revision also resolves stipulation #8 to Permit #C-028=81. <br />If you have any questions on this matter please contact me: Thank you <br />foz• your patience and cooperation in this matter, <br />Sincerely, <br />_ ~ <br />' v <br />Robert G. Liddle <br />Reclamation Specialist <br />RL: ep <br />cc: J. Nelson <br />B. Robie <br />M. Long <br />M. Savage <br />D. Craig <br />