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~~ . <br />EUGENE M. SHEARER,P.E. <br />CONSULTING GEOLOGIST <br />5720 South Jasmine Street <br />Englewood,CO 80111-1525 <br />(303)771-2371 <br />23September94 <br />Mr. Bryan J. Archer <br />Sun Coal Company <br />10200 West 44th Avenue, Suite 120 <br />Wheat Ridge, CO 80033 <br />RECEIVED <br />OCT 18 1994 <br />?i ~!sion v. munerals 8 Geology <br />RE: Meadows No.l Mine (C-81-029) <br />Fall Quarter 1994 Sedimentation Pond Inspections <br />Dear Bryan: <br />The Fall Quarter, 1994, inspection of the sedimentation <br />ponds took place on the 18th and 19th of September. The <br />following information was observed. <br />Lower Sedimentation Pond No.l <br />1. Structural Weakness - None <br />2. Erosion and Vegetation - No rills or gullies oP <br />significance disturb either the upstream or downstream <br />embankment slopes. Vegetation is well established on <br />these slopes, and a lesser density of plant growth <br />occurs on the embankment top. <br />3. Hazardous or Potentially Hazardous Conditions - None <br />4. Sediment Level - 1.5 feet below the riser base. The pond <br />is dry, consequently this measurement includes no <br />estimate of water depth. <br />5. Required Maintenance - None <br />6. Discharge Structures <br />The primary dewatering device is dry and free oP any <br />debris. <br />Both the emergency spillway riprap and the outflow <br />riprap are in acceptable condition. Sparse vegetation <br />in the spillway and outflow areas constitutes no <br />hindrance to water flow. There is no evidence of <br />recent water flow in these structures. <br />7. Input Structures - Small alluvial fan deposits located <br />at the termini of the lateral and ditch that input water <br />and clastic material to the pond appear to reflect no <br />change from the Summer Quarter, 1994, inspection. <br />$. Miscellaneous - Embankment measurements confirm that the <br />structure conforms to Section 4.05.6(11)(f) and <br />4.05.6(11)(h) of the Regulations of the Colorado Mined <br />Land Reclamation Board for Coal Mining. <br />