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<br />g ~ ~ II I I II I II I II IIII III ~(u, , <br />a GEC MINERALS, INC. <br />FLORENCE, COLORADO 81226 303J784-E 891 <br />P.O. BOX 225 <br />March 31, 1981 <br />RECEIVED <br />Mr. Peter H. Evans <br />Reclamation Specialist <br />Mined Land Reclamation <br />Department of Natural Resources <br />State of Colorado <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />A.PR 0~ l~~l <br />MRVEU LAND RECLgMg710N ~ COgI <br />COLO. DEG7. pF Nq iURAL RESOURCES <br />SUBJECT: Proposed Construction Plan of the embankment at the point <br />of Diversion - Dam D Area. <br />Dear Peter: <br />The construction of a diversion ditch to separate the fresh water from <br />the disturbed (Mine) water (over the Dam D Area) has been 90% accom- <br />plished; however due to un-even rock bottom being encountered durinc <br />the construction, therefore we were forced to take a five (5) foot <br />deepening action to include both the embankments and the ditch itself. <br />Unfortunately three (3) feet of coal was exposed which could erode and <br />dilute the fresh water. Therefore, the west embankment of the ditch <br />should be well protected(armored) tc prevent erosion. The following <br />is the proposed construction plan to be applied to the embankment. <br />- A 4 to 6 square inch wire mesh will be installed to cover the <br />coal face, the total dimension of the wire mesh will be <br />approximately 5' X 300'. <br />- 1" thick shotcrete/granite/asphalt to be applied on top of <br />the wire mesh and throughout the entire wire mesh. <br />- The effectiveness of this engineering application will have to <br />be periodically checked to secure the embankment and keep it <br />in perfect condition. <br />- The completion date of this construction plan will be April 17, <br />1981. <br />If you have any questions regarding this submission please feel free to <br />call me. <br />Sincerely, <br />~~ ~~~ <br />L. K. Chen <br />U. P. Operations <br />i ~ <br />~~ , <br />~~~~ <br />~ " <br />~` y r~~ <br />L,y <br />