PERMFILE136916 - Laserfiche WebLink

Home Browse Search

2.04.7(1)(a) • of the piezometer wells in the proposed dam in the proposed sedimentation pond and one in the proposed underground development waste disposal site will also be sampled quarterlly for quality. Initial results of the quality samples are Figure:a 2.04.5-5d and 2.04.5-Se. In addition to these six piezometer wells, two new monitoring point have been established. They are designated a s CE-81-2, monitoring points A-1 and A-2. They are located east and west of the main branch of Ward Creek. These holes were drilled to further test the alluvium and to core the "E" coal seam, and were completed with PVC casing through a substantial portion of the alluvium in order to monitor water levels in the alluvial material. These well are located such that by monitoring water levels once a month initially, then quarterly after the first year, at: the same time measuring flow rates and the elevation of water in Ward Creek, influence of induced recharge to the "E" coal seam during mining should be evident. If the induced recharge is minor as it appeared upon underground inspection in May, 1981, recharge from the Ward Creek should substantially overcome any outflow due to the mining operation. In addition, at least one more monitoring well is being planned to be installed at the approximate western edge of the permit area • Section 11 near CE-80-3C and will be completed in a :similar fashion for the purposes of monitoring the alluvial water levels. In addition to water level monitoring, water quality seunpling will be done at these points on a quarterly basis. The Division will be notified when a decision has been reached concerning the new well. See Section 2.05.6(3)(b)(iii) for a current ground water monitoring schedule. (b) Additional information which describes the recharge, storage and • -61a- Revised May 21, 1993