Laserfiche WebLink
<br /> <br /> <br />(Page 2) <br />MINE ID # OR PROSPECTING ID # M-78-078 <br />INSPECTION DATE Q2 /03/99 INSPECTOR'S INITIALS Aye <br />OBSERVATIONS <br />This was a normal monitoring inspection conducted by Tony Waldron of DMG along with Pete <br />Aragon of Lincoln County. The site is located approximately 16 miles east and 6 miles south <br />of Karval, Colorado. The pit is situated in the upper end of a small drainage where the <br />watershed begins to drop off a relatively flat plain to the south and into a number of small <br />drainages that typically run in a northerly direction and eventually into Rush Creek. The <br />surrounding area is mostly short grass rangeland dominated by Blue grama and Buffalo grass. <br />There is some farming to the south of the pit on the more level areas of the broader plain. <br />The pit was inactive at the time of this inspection. The mine identification sign and permit <br />boundary markers were properly installed. Prior to moving from this pit the last time it was <br />operated by the county, the operator had sloped most of the highwalls and left the pit in <br />relatively good condition. There is an area along the south side of the pit that is <br />exhibiting some erosive down cutting. This is not causing a problem at this time since all <br />of the runoff from this area is captured within the pit. However, this could become a <br />problem when the pit is reclaimed since the pit is located where water naturally dropped off <br />of the relatively flat plain south of the pit. <br />As a result, unless the water is diverted around the pit after it is reclaimed, it will <br />likely continue to down cut somewhere along this south wall. There are basically two options <br />to deal with this water situation. The Eirst is to divert the flow around the pit which will <br />require the installation of an up_r.~ __.=-sior.:::_r..g t`.e south rim of the pit. This could <br />solve the down cutting problem in the pit, however, the diverted flow will still need to be <br />dealt with to prevent down cutting in another location as it drops off of the plain. The <br />second option is to allow the water to find its own place to drop down off of the plain and <br />across the re-sloped highwall and then work to reinforce that area to prevent excessive <br />erosion. This method takes into account that there will be some down cutting as the channel <br />re-establishes itself, but this down cut area will be <br />reinforced or reconstructed to handle these flows once the site is permanently abandoned. <br />Since the pit is still active this is not an immediate concern, however, it will need to be <br />addressed eventually. Therefore, the operator is being asked to submit a technical revision <br />to their reclamation plan which outlines how they intend to manage the surface water flows <br />coming into the pit from the south. This is being cited as a problem on page three of this <br />report along with corrective actions including dates for submittal of the Technical Revision. <br />This concluded the inspection. <br />fi E Contact Address <br />NAME Pete Aragon <br />OPERATOR Lincoln County <br />STREET P.O. Box 67 <br />CITY/STATE/ZIP Huao, CO @0821 <br />~~ ~ ~ ~~~ <br /> cc: Jim Stevens <br /> ^ CE <br /> ^ BL <br /> ^ FS <br /> ^ HW <br /> ^ HMWMD (CH) <br /> ^ SE <br /> ^ WQCD (CH) <br />~~~ ,/~~ ^ OTHER <br />