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• i _q_ ~ Page 2,04-23 states that recharge to the Trout Creek Aquifer may occur through reclaimed spoil material. What is the vertical permeability of the strata between the ,Trout Creek sandstone and the Wolf Creek ~~ 7 q-.,., 'S&A~46He-'~' ~~'~luY~r-< .,rriM CI P~,.~ t~.<;"~ ^%~ _ ~ t'-,''~-~,1~~, = ,.~.. _`__ , iE`` .L, Operation Plan - Rule 2, 05,3(3)(c)(i) (/ 1. Please delineate the drainage areas used in the culvert design v,u ~~ calculations on a map which shows the worst case disturbance. ~}. Mitigation of Surface Coal Mining Impacts - Rule 2.05,6 11~~ Rule 2.05, 6(3)(b) specifically requires the coal operator to provide a plan for (1) routing water from undisturbed areas away from disturbed areas and (2) treatment of drainage from disturbed areas, Please ~~.~`-~~ submit a schedule which discusses the placement and_si.zing_of temporary .~~ t clean water ditches south of actiye.•.rrFi~na.r~q_a.Ceas.-'Please present a~~ ;' drainage system~aesign, which meets the standards of Rule 4,05,3, and `, ~;~~~ 'provides for diversion of flow from ail reclaimed, disturbed and active .~tJ .\ mining areas in the western part..of,_Permit 79-177 into..a._sedimentation ond. /This drainage system should minimize contributions of sediment to--streamflow per 4.05.5(1)(a) and 4,05.5(2) and protect aquatic ~_;~ communities and the associated riparian habitat pursuant to (4.18(4)(e) J~~;i ~ and (f)). Please provide raw calculations and a map delineating areas \ (acreages) used for individual drainages. This should include topographic relief and worst case status of land use (disturbed, regraded, reclaimed artd undisturbed). Drainage structures for both the x east and west panels should be submitted. ~ ~~/2. The discussion of the hydrologic monitoring plan indicates that samples `?` will be obtained using accepted sampling techniques, but does not ~. , ;` ~;, provide further details. Please reference procedures of company ~~ sampling protocol for approval by the Division. ~ ~ ~ Specifics of the hydrologic monitoring plan will be negotiated just _~ ;~_ prior to preparation of the findings. CMLRD concerns at this time ,;:k4~y' range from the absence of upstream surface water sites and shallow •~ water alluvial wells to the adequacy of bedrock monitoring in the Trout ?-1~~. ~. Creek and Wolf Creek aquifers. Electrical conductivity values should ~ ~ :~` -~t~ be recorded in terms of specific conductance and ammonia values should %~y?~J~o- reflect the un-ionized form. \ ~ Si /4, A discussion of the effects of dewatering the overburden aquifer and its Subsequent recharge appeared on page 2.05-114, This discussion referenced figure 5-4 which was not found in the permit. Figure 5-D ~' shows seasonal fluctuations in water levels based on the averaging of many years of data, but does not show any effects from dewatering, Please submit a new graph or delete the paragraph.