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introduction of moisture from the waste water from condensation of vapor phase water in the cover or from the oxidation of methane (i.e.,when methane is present in the final cover it oxidizes and creates water as a byproduct of the reaction). The fact that the middle probe in the final cover section appears to increase more than the underlying or overlying probes provides further substantiation of a waste source for this water. The relatively high moisture contents observed during the summer are likely to be exacerbated by the immaturity of the vegetation. 6.2.2 SATELLITE STATION The Satellite Station monitoring location is in the western portion of the Stage 1A closure footprint and the soil moisture results from this location are illustrated on Figure 4. As with the Met Station location, soils at this Satellite Station exhibit variations in moisture content that are broadly associated with periods of precipitation events with only the more severe events (e.g., late February,2007)causing a discrete soil moisture response. The increasing soil moisture trend observed a the Met Station in the early summer of 2007 was not observed at the Satellite Station. Rather, a relatively constant moisture content has been observed at this location during this period. 6.3 HEAT DISSIPATION SENSORS 6.3.1 MET STATION Data from the soil suction instruments (Heat Dissipation Sensors-HDU) installed at the Met Station are illustrated on Figure 10. As shown therein, soil suction potentials are greater(indicating dry conditions)at shallow depth(12-inch)and lower(indicative of more moist condition) at deeper depths (36-inches). This clearly indicates an upward suction gradient (and an upward moisture flux gradient) from the base of the cover; a condition wherein long-term drying of the final cover/solid waste system is expected. The second most significant It should also be mentioned that a severe storm event monitored during late February 2007, cumulatively caused a rapid response at all depths down to 24". While this dramatic response is clearly attributed to the severity of the storm events, it is also exacerbated by the likelihood of higher post-construction water content and the poorly developed vegetation at the time. Though the rain event was not captured you can see how the soil suctions decreased (meaning moisture increased) during this period, but no percolation was recorded during this time period. 6.3.2 SATELLITE STATION Data from the soil suction instruments installed at the Satellite Station.are illustrated on Figure 11. As illustrated therein, soil suction potentials at the Satellite location are similar to the Met Station in exhibiting higher suction potentials in shallow soils and lower suction potentials in deeper soils. Again,this is indicative of a long-term drying potential for the cover/waste system. 6 Geologic Associates