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MLRD Findings Document: Stipulation No. 11, p. 9 <br />OSM Findings Cocument: Stipulation No. 27, p. 8 <br />OSM TEA: Stipulation No. 23 (listed as No. 2 under Section 817.59), p. 71 <br />25. Stipulati orl: THE DIVISION DIRECTS ARCO TO COMPLETE THE .INSTALLATION OF THE <br />SUBSIDENCE MONITORING NETWORX PRIOR TO TfIE INITIATION OF EXTRACTION OF' COAL <br />WITHIN THE PANEL DESIGNATED IN EXHIBIT 3.4.8.A FOR SUBSIDENCE MONITORING. THE <br />MONITORING NET[/ORK IS DESIGNED TO MONITOR THE FIFTfI PANEL FROh1 THE ENTRANCE OF <br />THE MAIN PORTAL, WEST FROM THE MAIN, WITFFIN SECTION 16. THIS hONITORING NET- <br />WORK SHALL CONSIST OF SUBSTANTIAL hfONUhfENTS DESIGNED TO RESIST FROST-HEAVE, <br />FIRE, AND THE ACTIONS OF CATTLE AND WILDLIFE. ARCO SHALL SUBMIT A MONUMENT <br />DESIGN TO THE DIVISION FOR APPROVAL. MONUMENT INSTALLATION SffALL NOT OCCUR <br />PRIOR TO RECEIPT OF DIVISION APPROVAL OF THE MONUMENT DESIGN. <br />MLRD Findings Document: Stipulation No. 41, p. 96 <br />OSM Findings Lbcument: Stipulation No. 38, p. 11 <br />OSM TEA: This stipulation has not been incZ uded in the TEA. <br />26. Stipulation: THE DIVISION DIRECTS ARCO TO SUBMIT REPORTS OF ITS SUBSIDENCE <br />MONITORING PROGRAM ON A SEMI-ANNUAL BASIS, COhIh1ENCING ONE MONTH AFTER THE <br />INSTALLATION RND INITIAL SURVEYING OF THE SUBSIDENCE MONUMENTS. FURTHER, DUE <br />TO THE COMPLEXITY OF THE PERhlZT AREA GEOLOGY, PRESENCE OF LANDSLIDES AND STEEP <br />SLOPES, AND SENSITIVE HYDROLOGIC ELEh1ENT5, ARCO ZS DIRECTED TO SUBMIT A PROPOSED <br />SUBSIDENCE MONITORING REPORT FORMAT TO THE DIVZSIOP! FOR APPROVAL. THIS <br />REPORT FORMAT SHOULD RECOGNIZE TffE IMPORTANCE OF CONTINUAL UPDATE OF SUBSIDENCE <br />DATA INTERPRETATION, h10FlITORING OF GROUND WATER LEVELS AND SPRING FLO{JS, <br />h10NITORING OF MINE INFLOW, AND SUBSURFACE GROUND CONDITIONS WHICH COULD BE <br />CORRELATED TO SUBSIDENCE PREDICTION. THIS REPORT FORMAT SHALL BE APPROVED <br />"BY THE DIVISION PRIOR TO THE COh1MENCEMENT OF EXTRACTION OF COAL WITHIN SHE <br />PANEL DESIGNED IN EXHIBIT 3.4.8.A FOR SUBSIDENCE h10NITORING. <br />MLRD Findings Document: Stipulation No. 42, p. 47 <br />OShf Findings Document: Stipulation No. 39, P. 11 <br />OSM TEA: Stipulation No. 32, p. 160 as follows: <br />32. Although the applicant intends to perform subsidence measurements <br />upon a greater frequency than stated in the rule (1 month vs. Z quarter) <br />the applicant does not describe the method or content of its reports <br />to the regulatory authority. Due to the presence of landslides, <br />questionable hydrologic effects and the lack of Ioca1 subsidence <br />history it is required that the applicant negotiate a formal report- <br />ing system with the regulatory authority. This precedure should <br />recognize the importance of continual update of data interpretation, <br />monitoring of ground water levels, and mining conditions in the panels <br />which could be correlated to subsidence prediction. <br />27. Stipulation: TIIE DIVISION DIRECTS ARCO TO COMPLETE A DETAILED ANALI'SIS OF <br />THE POTENTIAL EFFECTS OF SLOPE STABILITY' UPON THE STABILITY OF THE LANDSLIDE <br />DEPOSIT LOCATED ADOVE THE TO[JN OF SOh1ERSET, REFERENCED ON PAGE 30 OF EXHIBIT <br />3.9.8.A OF THE REVISED PERh1IT APPLICATION. ARCO SHALL INSTALL AND MONITOR AN <br />APPROPRIATE SET OF MONUMENTS ON THE LANDSLIDE DEPOSIT, IN ORDER TO OBS""ERNE <br />POTENTIAL DISPLACEMENT OF TIfE LAND FORM. THE DETAILED ANAYSIS SHALL BE <br /> <br />