Laserfiche WebLink
Colowyo Coal Company L.P. <br />Permit No. C-1981-019 <br />Quarterly Impoundment Inspections <br />Third Quarter 2017 <br />Inspection Date: 9/26/2017 <br />9/26/2017 <br />9/26/2017 <br />9/26/2017 <br />9/26/2017 <br />9/26/2017 <br />9/26/2017 <br />9/26/2017 9/26/2017 <br />9/26/2017 <br />9/26/2017 9/26/2017 <br />Inspector: <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson <br />Lee Sampson Lee Sampson <br />Lee Sampson <br />Lee Sampson Lee Sampson <br />Rule 4.05.9 (15)(a) <br />Does the pond exhibit <br />erosion, instability, structural <br />No <br />No <br />No <br />No <br />No <br />No <br />No No <br />No <br />No No <br />weakness, or other <br />hazardous conditions? <br />Rule 4.05.9(15)(b) <br />Existing and required Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection Quarterly Inspection <br />Quarterly Inspection <br />Quarterly Inspection Quarterly Inspection <br />monitoring procedures. <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In Parshall Flume In <br />Parshall Flume In <br />Parshall Flume In Parshall Flume In <br />Rule 4.OS.9(15)(b) <br />Place and <br />Required Instrumentation <br />Place and <br />Place and <br />Place and <br />Place and <br />Place and <br />Place and <br />Place and Place and <br />Place and <br />Place and Place and <br />Functioning <br />Functioning <br />Functioning <br />Functioning <br />Functioning <br />Functioning <br />Functioning <br />Functioning Functioning <br />Functioning <br />Functioning Functioning <br />Rule 4.05.9(15)(c) <br />Depth of Impounded Water 5.0 <br />4.0 <br />5.3 <br />0.0 <br />3.0 <br />3.5 <br />8.0 <br />0.0 5.0 <br />220 <br />130 0.0 <br />(ft)* <br />Rule 4.05.9(15)(c) <br />Elevation of Impounded 6583.0 <br />7150.0 <br />6389.3 <br />Dry <br />6325.0 <br />6347.5 <br />6742.0 <br />Dry 7745.0 <br />6952.0 <br />74690 Dry <br />Water (it)* <br />Rule 4.05.9(15)(d) Existing <br />Storage Capacity (ac -ft)** 3.18 <br />9.71 <br />2.34 <br />3.70 <br />035 <br />102 <br />1.39 <br />4.35 0.58 <br />1.81 <br />143 1.67 <br />Rule 4.05.9(15)(e) <br />Any additional items <br />None <br />effecting stability or <br />None <br />None <br />None <br />None <br />None <br />None <br />None None <br />None <br />None None <br />maintenance Items <br />* Moment In time measurement of the elevation of the top of the captured pool of water within the pond. <br />**Impoundments volumes are estimated from pre-existing as -built surveys and estimates of accumlated sediment. <br />I am a Licensed Professional Engineer in the State of Colorado. The information contained in this document was provided by Colowyo Coal L.P. Being familiar with the <br />Colowyo operation, and relying on the information provided to me by Colowyo Personnel, the information contained herein is reasonable and correct to the best of my <br />knowledge and experience. <br />1E <br />