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structures and renewable resource lands, a projection of probable subsidence, and <br />developed a subsidence control plan and an appropriate accompanying subsidence <br />monitoring plan. <br />Inventory - <br />The operator has identified 41 structures within the permit and adjacent areas, depicted <br />on Map 9-7. Twenty seven (27) of these structures were inventoried within the permit <br />area, as well as two water pipelines and ait all-weather gravel road within S[even's <br />Gulch. No inventoried structures will be affected by mining operations during this <br />permit term since mining will be ceased temporazily and, possibly, during the entire <br />permit term. Should mining be resumed during this permit term, the proposed future <br />mine plan will be reviewed as it relates to possible mine subsidence effects. Stipulation <br />No. 42 of this permit renewal requires [he operator to submit waivers for any "occupied <br />dwellings within 100 feet of the permit area." The operator has also identified several <br />alluvial/colluvial surficial deposits which constitute renewable resource lands within the <br />revised permit area. <br />Surficial deposits have been identified within Steven's Gulch, East Roatcap Creek, and <br />in the area of the Morrell Cow Camp. The applicant completed a subsidence survey of <br />hydrologic features which is described in Section 2.OS.b(b)(e) Additional shallow <br />alluvial monitoring wells were installed within the alluvial/colluvial deposits for the <br />purposes of monitoring potential effects of subsidence upon the hydrology of the <br />surficial deposits. <br />Subsidence Proiections - <br />The operator retained Geo-Hydro Consultants, Inc. to complete a technical projection of <br />subsidence expected within the revised permit azea. Atypical subsidence profile is <br />graphically depicted on Plate 1 I of the subsidence study in Volume 3. Vertical <br />subsidence is projected to reach a maximum of approximately six feet. In consultation <br />with the Division, and through the employment of Dunrud's (1976) research, the <br />operator estimates the conservative angle-of-draw to be 20.5 degrees from vertical. The <br />technical projections included in the subsidence study conform with the prudent <br />state-of-the-art of subsidence projection. <br />Subsidence monitoring has been conducted within the Bowie No. 1 Mine permit area, <br />in compliance with the originally approved permit. The data collected to date <br />corresponds with the technical projections for vertical subsidence and draw angle (See <br />Table 8, Volume 3 and annual subsidence reports). <br />The operator has completed strain projections for the structures inventoried on Map 9-7. <br />Strain projections have also been completed for the Pitkin Mesa and the Bowie No. I <br />Mine water supply water pipelines which cross the potential subsidence zone of the <br />42 <br />