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_P1_ 310136-2c Siltstone and Coal " 310136-2p Lower Sandstone " *Field parameters (depth-to-water, pH, ec, temp.) are taken monthly, and a full suite water chemistry analysis (see Attachment A) is run quarterly. All data from both monthly and quarterly sampling is reported quarterly. Future monitoring of each of the three major bedrock stratigraphic units will be undertaken by the permittee in the following bedrock monitoring wells beginning one year prior to entering Federal Coal Leases C-8424 and C-8425: Well No. 310129-4u Upper Sandstone Facies Monitored Stratum Monitoring Frequency* Quarterly 310129-4m Siltstone and Coal " 310130-8u Lower Sandstone " 310130-Sm Siltstone and Coal " 310131-7m Siltstone and Coal " 310132-7m Siltstone and Coal " 310132-7L Lower Sandstone " 310133-8u Upper Sandstone " 310133-8m Siltstone and Coal " *Data to be reported on a quarterly basis. The location of each of the above monitoring wells is shown on Table II.C-35 within Volume 1 of the application. Quarterly reports are compiled and the data interpreted on a yearly basis by the permittee in the form of an annual hydrology report submitted to the Division on January 1st of each year. The operation is in compliance with the requirements of this section. VII. Alluvial Valley Floors - Rules 2.06.8 and 4.24 Alluvial Valley Floor Identification The permit area and adjacent lands contain three steam channels, the White River, Red Wash, and Scullion Gulch, with enough associated alluvium to be considered as potential alluvial valley floors. A11 three channels cross the permit area as well as the adjacent area. The permittee's alluvial valley floor analysis is contained in Section II.D of the permit application. Map 102 of Volume 9 of the application shows the extent of alluvial deposits along the three drainages.