Laserfiche WebLink
• <br />TAB 16 <br />PROTECTION OF THE NY DROLOGIC BALANCE <br />Introduction <br />The surface mining and reclamation activities that are to be carried out at the Yoast <br />Mine have been designed to minimize disturbance of the hydrologic balance within the <br />permit boundaries and areas adjacent to the mine. Activities of the mining operation <br />that assure protection of ground water, surface water, stream buffer zones, water rights <br />and alternative water supplies, and alluvial valley floors are addressed in this part of <br />the permit. Mining and reclamation activities, as well as monitoring and data reporting, <br />have been planned in accordance with the Probable Hydrologic Consequences (PHC) <br />determination (Tab 17) and the analysis of baseline hydrologic, geologic, and other <br />pertinent information required in the permit application. Reference to additional tabs <br />regarding complete details of mining and reclamation operations that address aspects of <br />• the protection of the hydrologic balance are documented in the following sections uh en <br />and where they are appropriate. <br />Ground Water Protection <br />Ground water protection is addressed in three parts: 1) ground water quality; 2) ground <br />water quantity; and 3) ground water monitoring. <br />~----- <br />Ground Water quality. Mining activities involving replacement of spoil material into the <br />mine pits are described in Tab 20, Bac kfilling and Grading. Handling procedures for <br />topsoil and overburden are described in tab 21, Minesoil Reconstruction. Procedures for <br />handling topsoil and overburden were developed after analysis of the chemical and <br />physical properties of these materials in the mining complex (see Tab b, Geology; Tab 9, <br />Soil Baseline Study; and Tab 17 (PXC), ~~Impacts of Spoil Water quality on Ground and <br />Surface Water quality"). Geochemical analysis of the spoil indicated that the material <br />is neutral to slightly alkaline in pN (range 7.2 to 8.0). However, the analysis of the <br />overburden indicates the material has an excess neutralization potential on the order of <br />• tens of tons per 1,000 tons of overburden material (see Tab 6, Table 6-6). Only two <br />acidic layers were identified in the Wadge overburden: 1) a 5.8 foot thick section solely <br />1 <br />