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Bowie Resources LLC Permit No. C-1996-083 PR-10 Preliminary Adequacy Review Page 4 of 8 been required through both agencies and some portions may be just for BRL's information. In order to avoid any confusion, please include in the subsidence monitoring descriptions beginning on revised page 2.05-115 which subsidence data is required by which entity. 17. The Division requests that a summary of subsidence monitoring stations be included in the permit application, as has been developed for water monitoring, identifying purpose, stations, locations, monitoring frequency, and better-defined start and end dates for some activities, and reporting requirements. For example, when (in terms of spatial and time relationships) will monitoring take place for lines 24 through 27 (see page 2.05-1 15)? Monitoring is to take place quarterly (page 2.05-116) for some items, but not others (photographs every 5 yeazs). 18. Please revise Section 2.05.6(6)(f)(v)(B) of the permit application to include an appropriate study that verifies the angle of draw. 19. Because of the importance of the Bruce Park Dam and Terror Creek Reservoir, the Division requests that, in addition to the request in the above comment for the confirmation of the angle of draw, a sepazate confirmation of the angle of draw close to the dam be provided in Section 2.05.6(6)(f)(v)(B) of the permit text. This would also provide compliance, in part, with item number 3 of Stipulation No. 9. Referring to revised Map 14-B, subsidence monuments might be located along the centerline of Panel B-12 in the location of depths of overburden similar to the reach between the closest mining of Panel 13 to the Bruce Park Dam and Terror Creek Reservoir. The line might consist often monuments, 100 feet apart. The purpose is to validate the predicted angle of draw in an area of similar lithology and depths. A similaz line of monuments from the point of closest long-wall mining to the dam would monitor actual effects of subsidence towards the structure. The Panel B-12 monitoring should start before the angle of draw reaches the 151(closest) monument. To validate the angle of draw, the frequency of monitoring should be increased. The spatial relationship between the longwall face and subsidence ahead needs to be captured in concurrent and real time (to determine the angle of draw). The Panel 13 monitoring should start before the angle of draw reaches the closest monument to the long-wall mining. The subsidence monuments for panels B-12 and B-13 should be shown on Map 27.