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Surface water monitoring in accordance with Stipulation No. 1 is ongoing at <br /> the mine. Technical Revision 4, however, reduced the monitoring frequency <br /> from quarterly to semiannually. <br /> STIPULATION NO. 1 <br /> THE PERMITTEE WILL PERFORM THE MONITORING OUTLINED BELOW AND SUBMIT A <br /> HYDROLOGIC MONITORING REPORT ANNUALLY IN JANUARY TO THE DIVISION <br /> INCORPORATING THE FOLLOWING MONITORING DATA. <br /> SURFACE WATER <br /> 1 . MONTHLY MONITORING OF THE HARVEY GAP RESERVOIR OUTLET AND THE <br /> SAMPLE SITE DESIGNATED AS HARVEY GAP BELOW THE MINE (ON MAP HGP-18). <br /> THIS MONTHLY MONITORING MUST INCLUDE FLOW AND FIELD PARAMETERS. <br /> SEMI-ANNUAL SAMPLES ARE TO BE TAKEN FOR THE FULL SUITE CHEMICAL <br /> PARAMETERS AS DESIGNATED LATER IN THIS SECTION. <br /> 2. SEMI-ANNUAL MONITORING OF THE HARVEY GAP RESERVOIR SEEP INCLUDING <br /> FLOW AND FIELD PARAMETERS. <br /> 3. COMPILATION OF ALL DATA SUBMITTED TO THE COLORADO DEPARTMENT OF <br /> HEALTH FOR COMPLIANCE WITH THE NPDES PERMIT SAMPLING REOUIREMENTS, <br /> INCLUDING SALINITY. <br /> GROUND WATER <br /> 1 . CONTINUATION OF AN INFLOW STUDY AT THE MINE WITH THE SOURCES OF <br /> SEEPS MAPPED ONCE YEARLY. FLOWS AND FIELD PARAMETERS SHALL BE SAMPLED <br /> AS PRACTICABLE. A HEAVY INFLOW MONTH SUCH AS JULY WILL BE CHOSEN FOR <br /> INFLOW MAPPING. ANY NEWLY DEVELOPED SOURCES OF INFLOW THAT HAVE FLOW <br /> OF 0.5 GPM OR GREATER WILL BE TESTED ONE-TIME FOR THE FULL SUITE OF <br /> CHEMICAL PARAMETERS. <br /> 2. PUMPAGE RATES FROM THE MINE TO THE SEDIMENT PONDS WILL BE RECORDED <br /> WITH THE MINE WATER TESTED OUARTERLY FOR FIELD PARAMETERS AND ONCE <br /> YEARLY FOR THE FULL SUITE OF CHEMICAL PARAMETERS. <br /> 3. THE GEOTECH WELL, LOCATED AT THE PROJECTED BASE OF THE REFUSE PILE <br /> AND COMPLETED IN THE ALLUVIUM, WILL BE SAMPLED MONTHLY FOR WATER LEVEL <br /> AND FIELD PARAMETERS AND OUARTERLY FOR FULL SUITE CHEMICAL PARAMETERS. <br /> FIELD PARAMETERS FULL SUITE CHEMICAL PARAMETER <br /> TEMPERATURE pH MAGNESIUM <br /> pH TEMPERATURE SULFATE <br /> CONDUCTIVITY SPECIFIC CONDUCTANCE FLUORIDE <br /> FLOW OR WATER LEVEL DISSOLVED SOLIDS BORON <br /> SODIUM ALKALINITY <br /> POTASSIUM BICARBONATE <br /> CALCIUM <br /> Stipulation No. 2 of the original permit issuance required submittal of a <br /> design for a non-clogging orifice in Pond SP-2. This is shown on Drawing 4, <br /> Volume II of the Eastside permit application, and was approved in a letter <br /> from the Division to the operator dated April 4, 1985. <br /> -6- <br />