Laserfiche WebLink
<br /> <br />altered drainage pattern and reconstructed channel <br />have been designed to effectively handle the runoff <br />a large storm event. Having a drainageway from suc <br />watershed perched on the top of what is now a sort <br />situated between your property end the parcel on whic <br />Equipment is located would appear to present an <br />problem as reconstructed drainageways are often uns <br />prone to both vertical and lateral shifting of the <br />during heavy thunderstorm events. One thing that was <br />while walking the channel was that the slope gradie <br />channel flattens out considerably as it nears your <br />This would appear to explain why the steeper portio <br />drainageway exhibited scouring due to the higher ve <br />runoff and why the lower portion situated on your <br />showed deposition and infilling es the gradient decr <br />the velocity of runoff was not sufficient to carry <br />cobbles further downstream. One possible solution wo <br />consult with an engineer having experience in draina <br />and look into establishing a more even channel <br />between the east boundary of your property and the <br />culvert inlet. The size of the highway culvert may <br />problem that you may wish to talk to the Colo. <br />Transportation about. At any rate, some degree o <br />clean out work may be advisable before the star <br />upcoming summer thunderstorm season. <br />may not <br />rom such <br />a large <br />of ridge <br />.Century <br />ongoing <br />able and <br />channel <br />apparent <br />t of the <br />roperty. <br />i of the <br />ocity of <br />property <br />ased and <br />he large <br />ild be to <br />e design <br />gradient <br />highway <br />lso be a <br />lept. of <br />channel <br />of the <br />5) As I recall from our meeting at the site last Septemb r, there <br />was also a concern over the access road that leads from the <br />highway up to Mr. Helmerick's residence on the to of the <br />mesa. This road is not apart of the mining operati n and as <br />such is outside our Division's jurisdiction. <br />To summarize, the Division sympathizes with your concerns <br />problems you have experienced as a result of last Augus! <br />rains, however based on my observations of the drainagewa <br />not appear that either the J & J Pit or the Carbon Jun c1 <br />have caused or contributed in any significant way to the <br />Please contact me at 247-5062 here in Durango if you <br />questions or comments. Also, please feel free to cc <br />Supervisor, Mr. Jim Stevens of our Denver Office, phone <br />866-3567 if you so desire. <br />Sincerely, <br />L~E:I ~j' <br />Tom Gillis <br />Bnvironmental Protection Specialist <br />/tdg <br />cc: Jim Stevens <br />b:GALLEGOS <br />over the <br />'s heavy <br />it does <br />ion Mine <br />problem. <br />eve any <br />tact my <br />no. 303- <br />3 <br />