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<br />Serial NO. C-1362 <br />CONTROL7.SD SURFACE USE ST==ATION <br />GENERAL FOREST <br />surface occupancy or use is subject to the following special operating <br />constraints. <br />Underground mining operations will result in 'surface 'subsidence. The <br />'operator/lessee shall perform a study to secure adequate baseline data to <br />quantify the existing surface resources' on and adjacent to the lease area. <br />Existing data may be head if such data io 'adequate for the intended <br />purposes. The study shall be adequate to locate, quantify, and demonstrate <br />the inter-relationship of the geology, topography, surface hydrology, <br />vegetation and wildlife. Baseline data will;be established so?that future <br />programs of observation can be incorporated at regular is tervals for <br />•. comparison. • <br />The operator/lessee shall establish a monitoring system to locate, measure <br />and quantify the progressive and final effects of'. underground mining <br />activities on the topographic surface, underground and surface hydrology <br />and vegetation. The monitoring system shall utilize. techniques which will <br />provide a continuing record of change over time and an analytical method <br />for location and measurement of a number of points over the lease area. <br />The monitoring shall incorporate and be an extension of the baseline data. <br />If subsidence activates a landslide which adversely affects surface <br />resources, or a documented water loss, the operator shall (where <br />applicable): <br />1. Restore stream channels and surface drainage or protect stream <br />flow with earthwork or temporary culverting; or <br />2. Restore affected roads; or <br />3. Revegetate as necessary to protect against erosion; or <br />4. Restore or replace surface structures or compensate the owner of <br />those surface structures; or <br />5. Provide other mitigation (which could include water replacement). <br />on lands described below: <br />National Forest system and Bureau o£ Land Management lands within the <br />entire lease.