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Colowyo C-1981-019 <br /> 18 June 2009 <br /> Pg 2/3 <br /> - The Prospect Pond (NPDES 007A) contained water to the weep hole and was <br /> discharging an immeasurable trickle at the time of the inspection. There was a small <br /> amount of sediment at the inlet but much less than has been there from the runoff <br /> from past years. It appears that the measures implemented on the surface above <br /> the Prospect Pond (contour ditches, repairing the riprap in the Prospect Ditch, etc.) <br /> have been successful in reducing the sediment load to the pond. There is a small <br /> area just below the emergency spillway that was repaired last year by Anson that <br /> appears to have some erosion. This area does have vegetation growing on it now <br /> but it will need to be watched. The pond embankment was well vegetated and no <br /> erosional problems were noted besides the one mentioned above. The short road <br /> spur up to the Prospect Pond was well maintained and stable. <br /> - The Gulch A Pond (NPDES 004A) was not inspected. <br /> - The Section 16 Pond (NPDES 009) was not inspected. <br /> - The Streeter Pond (NPDES 001 A) contained water approximately 1 feet below the <br /> top of the discharge pipe and was discharging from the weep hole on the pipe. The <br /> discharge was clear. There was no water flowing into the pond at the time of the <br /> inspection. The pond embankment was stable and well vegetated and no erosional <br /> problems were noted. The large culvert that carries water from Goodspring Creek <br /> under Colorado Highway 13 was clear at the time of the inspection (although this <br /> culvert is the responsibility of CDOT it does get clogged up and cause water to back- <br /> up for quite a distance). The emergency spillway was stable at the tirne of the <br /> inspection <br /> - The Section 28 Pond (NPDES 012A) contained a small amount of water but was not <br /> discharging at the time of the inspection. There was a small amount of sediment at <br /> the inlet of the pond from the runoff but this is not a problem at this time. The <br /> vegetation (mainly the grasses) on the embankment continues to grow and should <br /> benefit from the wet spring. There are some bare patches in the vegetation on the <br /> embankment that may need to be interseeded this fall if they do not fill in this <br /> summer. There were no erosional problems noted on the pond embankment and it <br /> appeared to remain stable. The emergency spillway also remains stable. <br /> Backfilling and Grading: - The Division has approved a backfilling and grading <br /> schedule for the West Pit with the approval of Technical Revision 79 and the <br /> remaining East Pit with Technical Revision 80. <br /> - Colowyo has continued to work on backfilling and grading in the East Pit with the <br /> 101 dragline. They are walking the dragline along the highwall throwing material into <br /> the pit taking 25 foot cuts each pass. <br /> - Colowyo has been performing backfilling and grading operations in the Section 4 <br /> area of the West Pit (by the East Taylor Pond), although they were not working on the <br /> area at the time of the inspection. They are using the 102 dragline to move material <br /> into the draw when it is out of sequence in the West Pit. Currently the 102 is doing <br /> pull-back work then it will return to this area to perform reclamation. The plan is to <br /> keep cycling the 102 dragline between the West Pit and reclamation work in this <br /> area. <br />