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\J <br />December 23, ! 9>9 <br />American Soda, L.L.P. <br />Yankee Gulch Sodium Minerals Project <br />GROUNDWATER, SURFACE WATER, AND <br />PROCESS MONITORING PLAN FOR THE <br />YANKEE GULCH SODIUM MINERALS PROJECT <br />Table of Contents <br />n <br />U <br />• <br />I.0 INTRODUCTION ................... <br />2.0 <br />GROUNDWATER MONITORINC ................................................................................ <br />2.1 Groundwater Monitoring Locations ................'............................ <br />2.1.1 Piceance Site Groundwater Monitoring Locations........... <br />2.1.2 Parachute Site Groundwater Monitoring Locations ......... <br />2.1.3 Local Domestic Well Locations ........................................ <br />2.2 Groundwater Monitoring Program ............................................... <br />2.2.1 Water Level Monitoring ................................................... <br />2.2.2 Groundwater Quality Monitoring ..................................... <br />2.3 Piceance Site Groundwater Monitoring for Years 5-30 ............... <br />2.4 Post-Mining Groundwater Monitoring ......................................... <br />Page i <br />Paec <br />..........1 <br />...........3 <br />...........3 <br />4 <br />3.0 SURFACE WATER MONITORING LOCATIONS AND PROCESS ................ ...........................16 <br />3.1 Piceance Creek Monitoring ......................................................... ...........................16 <br />3.2 Parachute Creek Monitoring ....................................................... ...........................18 <br />3.3 Spring and Seep Monitoring-Piceance Site .............................. ...........................18 <br />3.4 Precipitation Monitoring-Piceance Site ................................... ...........................19 <br />3.5 Post-Mining Surface Water Moni[oring ..................................... ...........................19 <br />4.0 PROCESS MONITORINC .......................................................................... ...........................20 <br />4.1 Solution Mining Wells ................................................................ ...........................20 <br />4.2 Hazardous Waste Determination ................................................ ...........................21 <br />4.3 Solution and Cooling Ponds ........................................................ ...........................22 <br />4.4 PipelineMonitoring .................................................................... ...........................22 <br />$.0 QUALITY ASSURANCE/QUALITY CONTROL .....................................................................24 <br />5.1 Groundwater Sampling Methods ...........................................................................24 <br />5.2 Calibration Procedures and Frequency ..................................................................24 <br />5.3 Data Reduction, Validation, and Reporting ...........................................................25 <br />5.3.1 Data Reduction ...........................................................................................25 <br />5.3.2 Data Validation ..........................................................................................25 <br />5.4 Data Management ..................................................................................................25 <br />5.5 hiternal Quality Control Checks ............................................................................25 <br />S.J.I Quality Control Checks-Field Activities .................................................25 <br />Agapito Associates, Inc <br />