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it <br />Site SWGS-05 was added on the upstream end of Cottonwood Creek in 1993. ~~ <br />Site SWGS-05 and SWGS-02 are both upstream in Cottonwood Creek and are <br />both above the projected angle of draw of the mine workings. Therefore 'i <br />monitoring of theses sites is redundant. Monitoring of Site SWGS-05 ceased <br />effective August 1999. <br />Monitoring on Coal Creek and Jeny Creek was started in 1995. Discussions with <br />DMG have indicated that there is no need to monitor the upstream locations <br />SWGS 07 and 09. The flow will only be monitored at the lower monitoring points. <br />The locations are shown on Exhibit 56. The ephemeral flow in Coal Canyon will <br />be measured at culverts located between the two refuse disposal areas, SWGS <br />06. These culverts provide a stable cross section and are accessible throughout <br />the year. A rating chart for the culverts is shown on Table 18-6. The intermittent <br />flow in Jerry Creek will be measured at the culvert near the Highline Canal, <br />SWGS O8. Beginning July 1999, instantaneous flows will be monitored monthly. <br />Peak flows were estimated from the flow marks in the culverts as well as chalk <br />marks on the culverts through 1999 when this monitoring was discontinued. <br />The annual monitoring of the springs and seeps described in the hydrologic <br />section of this permit application was initiated in 1995 and discontinued effective <br />2006. <br />Vol. 5 Tab 18 18-3 04/06 <br />