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Pitch Reclamation Project April 14, 2006 <br />2005 Annual Reclamation Report Pace 10 <br />• thes I events. During 2005, the phreatic surfaces in all piezometers showed a comparatively normal <br />spring cycle. The seasonal low water levels observed in P-7 and P-10 indicate gradual upward <br />trends that have been observed since 2000. A hydrograph of the piezometer water levels is <br />provided as Figure 4. <br />4.3.31 Pinnacle Adit Flow <br />The f+ow rate from the Pinnacle Adit at PP-01 has been monitored since November 1993. The flow <br />from the adit remains in a seasonal pattern of high flows during the short period of spring melt in late <br />May or early June and stable flows of less than 10 gallons per minute (gpm) throughout the year. <br />The measured peak flow for the 2005 season was 30.2 gpm on June 6, 2005. A hydrograph of the <br />Pinnacle Adit flow at PP-01 is provided as Figure 5. The spike in flows observed at PP-01 each <br />spring are likely a result of snowmelt and runoff from surrounding sources originating between the <br />Pinnacle plug and the PP-01 discharge point. Once the snowmelt period is over the discharge at <br />PP-0,1 decreases and stabilizes at normal levels. <br />Radium and Uranium Concentrations at PP-01 <br />ed radium 226 and total uranium have been monitored at PP-01 since March 1994. After <br />ction of the Pinnacle Adit plug in September 1995, both the dissolved radium 226 and total <br />1 concentrations have stabilized at reduced concentrations. A graph of the radium and <br />1 concentrations at PP-01 is provided as Figure 6. During 2005, total uranium and dissolved <br />226 levels remained at the reduced concentrations observed over the preceding nine-year <br />• <br /> <br />