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. 1997 Annual Hydrologic Report <br />Page 3 <br />There was no discharge from CDPS discharge points 005 thru 014 during the Year. These <br />outfalls cover sediment pond discharges. Discharge point 015 is permitted to allow <br />pumping water from the south end of the Roadside South Portal out the 2 West portals. <br />Piping to this point has not been installed yet and as a result there was no discharge from <br />this point during the Year. <br />Discharge point 001 is used as an overflow to a mine water system for the preparation <br />plant. The source of the water is primarily location 3 (see the Mine Water section of this <br />report) in the Roadside South but can include flow from location 5. Flow from this site is <br />not directly related to inflows and is discussed in more detail in the Mine Water section of <br />this report. As with other winters, in order to avoid freezing problems only enough water <br />to supply the preparation plant was pumped from the mine. Data pages SD-11 and 12 <br />show the results of weekly monitoring on this point. The 1997 full suite water analysis <br />results are shown on data page SN-5. Table S97-2 has been prepared to give a statistical <br />analysis of information taken at this site since 1979. Diagram S97-1 is a graph relating <br />TDS to time and incorporating a Lowess Smooth Plot using a "nearness" factor of 0.5. All <br />• discharges from this site were within the permit limits. <br />Discharge point 002 is water siphoned from our former NW Intake Portal of the Roadside <br />South Portals. Mine inflows that are not used underground or pumped to the preparation <br />plant are routed to an abandoned portion of the mine for discharge from this point. Flow <br />information for this site is discussed in the Mine Water section of this report. Data pages <br />SE-6 and 7 include a listing of water quality monitoring performed at this site during the <br />Year. Data page SO-5 includes a full suite analysis performed on a sample collected <br />during 1997. The average TDS dropped again this Year by about 2%. The following <br />table presents the average TDS measurements for outfall 002 for the last four water years. <br />Average TDS from Pages SE-3 - SE-7 <br />Water Year 1994 1995 1996 1997 <br />TDS (mg/I) 2115 1767 1709 1683 <br />Table S97-3 is a statistical summary of sampling since 1979. Diagram S97-2 is a <br />graph relating TDS at outfall 002 to time prepared to incorporate a Lowess Smooth Plot <br />• (nearness = 0.5). The source of water for this discharge point has varied over time, <br />