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!~ ~ i~ III IIIIIIIIIIIII III • <br />37 E. Colorado Avenue <br />Denver, CO 80210 <br />(303) 722-9067 <br />Environmental Services • Botanical Studies • Photography ~ - <br />December 6, 1991 ~~ ~ ~~~ <br />Berhan Keffelew SEC (~ i, iqQ~ <br />Mined Land Reclamation <br />215 Centennial Bldg. Wlirlsc +_3ri(3 <br />1313 Sherman St Rp~lamatl0n ~IViG~r' <br />Denver, CO 80203 <br />RE: Volume of stockpiled material and other matters. <br />Daniels Sand Pit #2/Castle Concrete Sand Pit <br />Your file nos.: M-73-7 and M-77-213 <br />Dear Mr. Reffelew: <br />The topography map has been completed, as indicated in a previous <br />letter, and the volumes of 37 stockpiles of various types of materials <br />have been calculated as you requested in your September 19, 1991 <br />inspection report. Aa previously indicated, the map cost about $15,000 <br />to produce and the calculation of volumes and doing comparative cross <br />sectioning was additional. <br />Enclosed are various items for your information. First, a copy of the <br />new topography map is provided. This map does not include the far north <br />eastern corner o£ the permitted area, but nothing has ever been done <br />there, so it is not really relevant to the issue at hand. The engineer <br />is currently working on merging that area into this map and adjusting <br />the layout so everything will fit on one sheet. The map shows each of <br />the 37 stockpiles of various materials that were used in the volume <br />calculations. Ae you can see, we included all piles in the volume <br />calculation that were of any significance and could feasibly be measured <br />at this map accuracy. The small piles between the plant and the scale <br />house were not included, but they would not add much volume to the <br />total. <br />A data sheet is provided that shows what each of the numbered piles is <br />composed of and its volume. The table has been arranged so that <br />materials of similar nature are all together. A total for each type of <br />material is provided in the column titled Class Volume. The volumes <br />shown are an average of the volumes calculated by two different methods <br />using digitized mapping points supplied by Analytical Surveys who did <br />the mapping. The computer work was done on Autocad Version 11. <br />~~.,ti <br />