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will also be routed through the pond. Pond 11 a was designed to control runoff <br />and erosion east of the North Pit. Pond 11 a was installed at the head of the <br />YPM-12 drainage above Pond 11; approximately 57 acres of disturbed area <br />runoff flows to Pond 11 a and subsequently discharges to Pond 11 for <br />treatment prior to discharge. Pond 12 treats runoff from approximately 31 <br />undisturbed acres and 287 acres of disturbed area. Pond 13 treats disturbed <br />area runoff from approximately 23.5 acres and undisturbed area runoff from <br />approximately 9.8 acres. Pond 14 treats disturbed area runoff from <br />approximately 117 acres, in addition to approximately 37 acres of undisturbed <br />area. <br />There are no variances from the requirements of the Rules and Regulations <br />proposed at this time. Therefore, no specific findings regarding sedimentation <br />ponds have been made. (4.05.6(11)). <br />D. Acid-forming and Toxic -forming Spoil <br />The overburden and interburden material associated with the Wadge and Wolf <br />Creek coal seams at the Yoast Mine is similar in nature to the corresponding <br />materials at the nearby Seneca II and Seneca II West coal mines. Only a minor <br />portion of the spoil generated by the mining operation has the potential to be acid- <br />forming or toxic -forming. This is due to acid forming potential of a fraction of <br />Wolf Creek overburden and low pH and high Boron found in and near the Lennox <br />coal seam. Seneca Property, LLC previously committed to sampling regraded <br />spoil material in areas of potential concern prior to replacement of topsoil to <br />determine the presence of acid or toxic forming spoil material at the surface of <br />regraded pits. Any areas with characteristics unsuitable for plant growth were to be <br />treated chemically or buried with at least four feet of topsoil. The regraded areas <br />were sampled as required, and no acid-forming or toxic -forming spoil was <br />encountered on site. <br />E. Surface and Ground Water Monitoring <br />Seneca Property, LLC has devised a water monitoring plan that will enable the <br />Division to determine what, if any, impacts the operation will have on the <br />prevailing hydrologic balance. The plan is described in detail in Tab 15 of the <br />permit application. <br />1. The applicant will conduct monitoring of ground water in a manner approved <br />by the Division. The ground water monitoring plan is listed in Tables 1 and 3 <br />of this document. (4.05.13(1)). <br />2. The applicant will conduct monitoring of surface water in a manner approved <br />by the Division. The monitoring plan was submitted under 2.05.6(3)(b)(iv) <br />and is listed in Tables 2 and 4 of this document. (4.05.13(2)). <br />20 <br />