Laserfiche WebLink
Also included with these technical revision responses are replacement pages and a change of <br />index sheet to ease incorporation into the permit document. If you have any questions or <br />require additional information, please feel free to contact me at your convenience at (970) 824- <br />1532. <br />Sincerely, <br />Tony Tennyson <br />Environmental Engineer <br />Encl. 2 copies <br />Cc: file CF 1.1.2.84 <br />RUSLE calculation, it makes sense to use SEDCAD's algorithm for estimating <br />annual sediment volume for each pond. The method is explained on p. 64 of the <br />SEDCAD User's Manual. <br />Pursuant to CDRMS requests earlier in this year, CCC is also seeking to establish a <br />uniform basis for all ponds with regard to sediment storage volume and storm <br />detention volume for use in the required annual inspection. CCC is setting the <br />elevation of the lowest ungated overflow (generally, the lowest hole in a <br />perforated riser) as the sediment storage volume. Comparison of the storage <br />volume below this point to the estimated annual sediment inflow calculated by <br />SEDCAD represents in our professional opinion the best way to perform this <br />calculation on a consistent basis. To the extent that the annual inspections are <br />required to be performed and certified by a professional engineer, we believe this <br />approach removes much of the ambiguity that may currently exist as a result of <br />the several approaches that have been used in the past to make this calculation. <br />