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Evaluation of Potential Impacts to Wetlands on the Sage Hill Farm from the Proposed Nix Property Sand and Gravel Operation WWE, the general direction of groundwater flow is to the northwest and generally follows the land surface (groundwater contours are shown on Figure 5). Data collected from the piezometers aze shown in Table 1. Figures 3A and 3B aze cross-sections through the wetland at piezometers installed in a north to south and east to west direction, respectively. The following observations are evident from the data: • The depth to groundwater beneath the wetland varied from slightly above the ground surface to approximately 3 feet below the wetland towazds its boundary. • Groundwater ranged from 0.76 to 2.40 feet below the surface in the wetland at MW-6. • Groundwater ranged from 0.1 feet above to 1.60 feet below the ground surface in the wetland at MW-8. • Groundwater levels fluctuated over a relatively large range during the approximately one- month period of monitoring. The maximum differences in groundwater readings are shown on Figures 3A and 3B. Groundwater fluctuated 1.6 and 1.7 feet at MW-6 and MW-8, respectively. • A relatively large range of hydrologic conditions existed throughout the wetland. The data from the piezometers (Table 1) indicate that moisture conditions in the wetland vary both throughout the wetland and with time. These fluctuations are likely caused by changes in pumping of irrigation wells, ditch diversions, and other changes in water used for agriculture in the area since little precipitation occurred during the monitoring period. Groundwater levels in the wetland are likely dependent upon agricultura] use of water in the azea. Field observations also indicate that surface water sources aze important for sustaining the wetland. Water was observed flowing into the wetland at the three laterals indicated on Figure 2. 011-074.000 Wright Water Engineers, Inc. Page 6 November 2001