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Stipulation No. 15 <br />WECC HAS REQUESTED PERMISSION TO COMPLETE AERIAL PHOTOGRAMMETRIC SURVEYS <br />OF THE SUBSIDENCE MONITORING GRID SUBSEQUENT TO THE INITIATION OF <br />SUBSIDENCE, FOR THE PURPOSE OF MONITORING SUBSIDENCE MONUMENT MOVEMENTS. <br />THE ACCURACY OF THE AERIAL PHOTOGRAMMETRIC SURVEYS SHALL BE DETERMINED BY <br />A COMPARISON OF TRIANGULATION BENCH MARK MONUMENT FIELD AND AERIAL <br />PHOTOGRAMMETRIC SURVEY RESULTS FOLLOWING EACH SEMI-ANNUAL SURVEY. THE <br />RESULTS OF EACH AERIAL PHOTOGRAMh1ETRIC SURVEY SHALL BE ACCEPTED AS <br />ACCURATE, IN THE EVENT THAT THE AERIAL PHOTOGRAMMETRIC AND MOST RECENT <br />ANNUAL TRIANGULATION M110NUMENT FIELD SURVEY RESULTS CORRELATE WITH AN <br />AVERAGE TRIANGULATION MONUMENT LOCATION DEVIATION OF LESS THAN 0.2 FEET <br />VERTICALLY AND HORIZONTALLY, WITH TRIANGULATION MONUMENT LOCATION <br />DEVIATIONS OF LESS THAN 0.4 FEET VERTICALLY AND HORIZONTALLY FOR LESS <br />THAN 83% OF THE TRIANGULATION MONUMENTS, AND WITH NO SINGLE TRIANGULATION <br />POINT LOCATION DEVIATION VERTICALLY OR HORIZONTALLY IN EXCESS OF 0.8 FEET. <br />Status: Forgiven. <br />Stipulation No. 16 <br />IN THE EVENT THAT THE AERIAL PHOTOGRAMh1ETRIC MONUMENT SURVEYS FAIL TO <br />MEET THE STIPULATED ACCURACY CRITERIA, WECC SHALL UTILIZE TRADITIONAL <br />FIELD SURVEY TECHNIQUES TO ESTABLISH THE REASONS FOR LACK OF <br />CORRELATION. IF THE RESULTS CANNOT BE CORRELATED, WECC SHALL RESUME <br />TRADITIONAL FIELD SURVEY tdONUh1ENT MONITORING, IN COMPLIANCE WITH THE <br />ACCURACY CRITERIA AND STANDARDS CONTAINED WITH STIPULATION N0. 15. <br />Status: Forgiven. <br />Stipulation No 17 <br />THE DIVISION DIRECTS WECC TO SUBMIT REPORTS OF ITS SUBSIDENCE MONITORING <br />PROGRAM ON A SEMI-ANNUAL BASIS, COMMENCING ONE MONTH AFTER THE <br />INSTALLATION AND INITIAL SURVEYING OF THE SUBSIDENCE MONUMENTS. FURTHER, <br />DUE TO THE COMPLEXITY OF THE PERMIT AREA, GEOLOGY, PRESENCE OF LANDSLIDES <br />AND STEEP SLOPES, AND SENSITIVE HYDROLOGIC ELEMENTS, WECC IS DIRECTED TO <br />SUBMIT A PROPOSED SUBSIDENCE t40NITORING REPORT FORMAT TO THE DIVISION FOR <br />APPROVAL. THIS REPORT FORMAT SHOULD RECOGNIZE THE IMPORTANCE OF <br />CONTINUAL UPDATE OF SUBSIDENCE DATA INTERPRETATION, h10NITORING OF GROUND <br />WATER LEVELS AND SPRING FL041S, MONITORING OF MINE INFLOW, AND SUBSURFACE <br />GROUND CONDITIONS WHICH COULD BE CORRELATED TO SUBSIDENCE PREDICTION. <br />THIS REPORT FORMAT SHALL BE APPROVED BY THE DIVISION PRIOR TO THE <br />COMMENCEMENT OF EXTRACTION OF COAL WITHIN THE SUBSIDENCE TEST PANEL <br />DESIGNATED IN APPENDIX A TO WECC'S NOVEMBER, 1984 PERMIT REVISION <br />APPLICATION (PANEL 1W-1 S). <br />Status: Active. <br />