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MONUMENT S2, 160 FEET NORTH OF TOES <br />OF THE WASTE PILE, AS INDICATED ON <br />DRAWING NO. MG -R C -001, INCLUDED IN <br />THE PERMIT REVISION NO. 6 APPLICATION. <br />DURING THE INSTALLATIONS OF THESE <br />TILT METER TUBES, THE OPERATOR SHALL <br />AUGER AND LOG THE SUPERFICIAL AND <br />BEDROCK STRATIGRAPHY ENCOUNTERED. <br />AUGERING SHALL CONTINUE UNTIL THE <br />OPERATOR HAS ESTABLISHED INTACT <br />BEDROCK OCCURENCE. IF ANY EVIDENCE <br />OF EXISTING LANDSLIDE DEPOSITS IS <br />ENCOUNTERED, THE OPERATOR SHALL <br />DEFINE THE NATURE AND EXTENT OF THE <br />PRE - EXISTING SLOPE INS. <br />MOUNTAIN COAL COMPANY WILL INFORM <br />THE MONTROSE OFFICE OF THE <br />COLORADO DIVISION OF WATER <br />RESOURCES PLACEMENT OF ALL NEW <br />SURVEY MONUMENTS. MOUNTAIN COAL <br />COMPANY WILL COPY THE MONTROSE <br />OFFICE OF THE COLORADO DIVISION OF <br />WATER RESOURCES ON ALL SURVEY, <br />PIEZOMETER, AND <br />ACCELEROMETER/SEISMOMETER <br />MONITORING IN AND AROUND MONUMENT <br />DAM. MOUNTAIN COAL COMPANY WILL <br />NOTIFY THE MONTROSE OFFICE OF THE <br />COLORADO DIVISION OF WATER <br />RESOURCES WHENEVER THE PEAK <br />GROUND ACCELERATION (PGA) <br />THRESHOLD IS EXCEEDED DURING THE <br />MONITORING PERIOD, WHETHER MINE - <br />INDUCED OR NATURALLY- OCCURRING. <br />