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Attachment A Colorado Coal Mine No. 1 List of Stipulations Stipulation No. 1 THE PERMITTEE SHALL ESTABLISH A TOTAL OF FIVE SURFACE WATER MONITORING STATIONS AT THE MINING SITE. THESE SHOULD BE LOCATED AT THE FOLLOWING POINTS: UPSTREAM OF THE MINING OPERATION ON THE MAITLAND AND GORDON ARROYOS AND THE UNNAMED TRIBUTARY OF THE MAITLAND ARROYO AND DOWNSTREAM OF THE MINING OPERATION UN THE MAITLAND AND GORDON ARROYOS. THESE FIVE STATIONS SHALL EACH BE MONITORED IN THE FOLLOWING MANNER: 1) A UAILY RECURU OF THE OCCURRENCE OF FLOWS IN ALL STREAM DRAINAGES (e. g. WAS THERE ANY FLOW?); 2) A DAILY DEPTH OF WATER READING; 3) A WEEKLY MEASUREMENT OF PEAK FLOWS; 4) MONTHLY FIELD MEASUREMENTS OF pH, ELECTRU-CONDUCTIVITY, AND TEMPERATURE DURING A PERIOD OF SNOWMELT AND/OR DURING THE FIRST PRECIPITATION EVENT OCCURRING IN THE MONTH; AND 5) A MINIMUM OF THREE WATER QUALITY SAMPLES FOR EACH OF THE STATIONS SHALL BE COLLECTED NNNUALLY. ONE SHALL BE COLLECTED UURIfVG SNOWMELT, ONE DURING A PRECIPITATION EVENT IN MIDSUMMER, ANU ONE DURING A PRECIPITATION EVENT AT THE ENU OF SUMMER. FIELD PARAMETERS OF pH, ELECTRO-CONDUCTIVITY, TEMPERATURE, ANU FLOW SHALL BE TNKEN PRIOR TO SAMPLING AS DESCRIBED ABOVE. THEN THE SAMPLES MUST BE AfVALYZEU IN A TIMELY MANNER FOR THE FOLLOWING PARAMETERS (TOTAL ION CONCENTRATIONS IN mg/1): TOTAL DISSOLVED SOLIDS NITRATE-NITRITE TOTAL SUSPENDED SOLIDS PHOSPHATE OIL AND GREASE ALUMINUM SODIUM ADSORPTION RATIO ARSENIC CALC I U~~1 BARIUM POTASSIUM COPPER SODIUM IRON BICARBONATE LEAD CARBONATE MANGANESE CHLORIDE MERCURY SULFATE MOLYBDENUM AMMONIUM SELENIUM FLUORIDE ZINC ALL SAMPLES SHALL BE COLLECTED, PRESERVED, AND ANALYZED ACCORDING TU U. S. E.P.A. METHODS. ALL RESULTS AND DATA COLLECTED FUR THE MONITORING PROGRAM SHALL BE SUBMITTED TO THE DIVISION ON A QUARTERLY BASIS, BEGINNING ON THE 4th MONTH AFTER PERMIT ISSUANCE.