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• <br />EXF[IBIT 2 - Continued <br />above the water table than that of alluvium consisting of gravel. In <br />addition, the interface between one lithology and another within the <br />alluvium has an effect on moisture content. The interface between the A <br />and B soil horizons can also affect the amount of moisture available <br />within the root zone. <br />To document the above effects on soil moisture, information on <br />topsoil thickness, root depth, and water table elevation from nearby <br />alluvial wells was analyzed along with the data collected from the <br />neutron probe access tubes. The location of the alluvial wells is shown <br />on Map 4, Energy Mine No. 3 Ground Water Hydrology. All of the above <br />information is graphically presented in this Exhibit in Figure 2, <br />Neutron Probe Access Tube Moisture Logs. The raw data collected were <br />interpreted considering site-specific conditions of lithology, topsoil, <br />• roots and alluvial water. These logs are discussed below. <br />The soil moisture conditions in the intermittent drainages of <br />Foidel and Middle Creek were found to be very similar. These logs were <br />adjusted only to correct for anomalies in [he raw data caused by the <br />topsoil-alluvium interface and water table elevation, since the lithol- <br />ogy at all four measurement locations was identical. The logs of Foidel <br />and Middle Creek show an increase in soil moisture in an interval of <br />about three feet above the water table, which is the capillary fringe. <br />The root zone does not penetrate this interval. However, the topsoil <br />also appears to contain high moisture content. Since the measurements <br />were made in late summer and there had been no recent precipitation, <br />this moisture is indicative of recent flood irrigation. <br />The logs of soil moisture in alluvium of Fish Creek show a similar <br />pattern of a capillary fringe extending approximately 2.5 feet above the <br />water table, and a root zone which does not penetrate the capillary <br />• fringe. In contrast to the logs from Foidel and Middle Creek, the <br />topsoil in the Fish Creek drainage did not exhibit high moisture content. <br />