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Surface Water Monitoring - New Horizon 2 Mine The total number of surface water sampling <br />locations is five. Calamity Draw contains three stations while the remaining two stations are <br />located on the West Lateral Ditch. <br />Stations SW-N102 is located on a tributary of Calamity draw and will remain as a monitoring <br />point for water leaving Pond 007. This will also act as the NPDES 007 discharge monitoring <br />point for Pond 007. The two stations, SW-N108 and SW-N109 are also located on Calamity <br />Draw. The upstream station, SW-N108 is located just west of Lincoln Street as it flows from <br />under the road. This station will define water quality and quantity before it enters the area <br />potentially influenced by the mine. SW-N109 is located on Calamity Draw west of the mine <br />permit boundary but east of the Nucla waste water lagoons. This station will define the water <br />quality and quantity as it leaves the site but before it is influenced by the waste water lagoons. <br />Station SW-N101 was dropped from the monitoring program in the Calamity draw as Stations <br />SW-108 and SW-109 replaced its functions. <br />Surface stations SW-N104 and SW-N105 monitor the West Lateral Ditch. These two stations <br />monitor flow and water quality of the ditch system as it enters the upstream area of the mine <br />and as it leaves the mine area. <br />Monthly flow, pH, temperature, and conductivity measurements will be taken at the five <br />monitoring locations to assess potential impacts of the mine and to fulfill the requirements for <br />the water augmentation plan. Water quality parameters listed in Table 2.04.7-2 will be <br />collected on a quarterly basis for SW-102, and on a semi-annual basis for the remaining four <br />stations (SW-1\1104, SW-1\1105, SW-N108 and SW-N109). The discharge point at Pond 007 <br />will also be monitored for NPDES requirements. <br />(REVISED 25 Jul 2002)