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activity. It is anticipated that the stock ponds in the remainder of the NMD and WMD will react in the same <br /> manner. If cracks develop in the embankments, they can be repaired and regraded to maintain the integrity of <br /> the ponds. Similarly, if differential subsidence results in changes in the elevation of the pond embankments <br /> • relative to the containment basins, minor repairs /reconstruction may be necessary to maintain water storage <br /> capacity and assure the integrity of the embankments. <br /> Monitoring Wells - Active ground water monitoring Wells 97012TC and 97012TM fall within the proposed <br /> mine expansion areas under PRO6 -07, and Alluvial Well 006 -AY1 falls within the mining area for Panel 2 -Left. <br /> The ground water monitoring wells lie directly above the main entries where retention of chain and barrier <br /> pillars will prevent surface subsidence, so these wells should not be impacted by the proposed mining <br /> operations. The alluvial well lies above an area which has been previously mined and subsided and was not <br /> affected. <br /> (c) Subsidence Monitoring Program. <br /> (i) The monitoring program shall be designed to determine the commencement and <br /> magnitude of subsidence movements which occur and shall include the following monitoring techniques: <br /> (A) .Monuments shall be installed and surveyed prior to the commencement <br /> of mining. <br /> (9) Monuments shall be situated to appropriately monitor ground surface <br /> movement, vertical and horizontal, within the area proposed to be undermined, including an area to <br /> accommodate the predicted angle -of- draw. <br /> (C) The orientation. location, and elevation of each structure within the <br /> permit and adjacent area shall be monitored. <br /> • (D) Monitoring of established monuments and structures shall be <br /> .eta :fa ed at least quarterly, commencing one month. prior to the initiation of mining beneath any established <br /> monument or structure. <br /> • <br /> PRO9 -08 2.05- 184.10 04/29/09 <br />