My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
REP01568
DRMS
>
Back File Migration
>
Report
>
REP01568
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 11:31:56 PM
Creation date
11/26/2007 10:00:27 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
Report
Doc Name
AHR REQUIREMENTS & INFORMATION PERMIT # C-81-018
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
30
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
the sediment yielded from the lease and adjacent ephemeral areas occurs as bedload. The remaining <br />90 percent presumably occurs as suspended sediment load. <br />There is no significant effect on groundwater systems caused by the abandoned mine. Storm runoff <br />from old mine tailings would have some minor effect on surface water systems. A site visit has shown <br />that the condition has essentially stabilized and that little or no excess runoff or sedimentation is <br />caused by the old tailings. <br />The suspended sediment load of the White River above Rangely, Colorado was estimated using the <br />station's long-term flow duration curve and a suspended sediment discharge rating curve, developed <br />using guidelines given by Strand (1975). The resulting suspended sediment load duration curve is <br />given in Rgure II.C-23. Through arithmetic integration (see Table II.C-7), the average suspended <br />sediment load at the station was determined to be 1230.5 tons per day (449,440 tons per year). <br />Assuming a sediment unit weight of 80 pounds per cubic foot (see Flaxman, 1975), this load converts <br />to a yield of 0.09 aae-foot per square mile per year. Again, based on guidelines presented by Strand <br />(1975) for rivers with sand and cobble bottoms and intermediate suspended sediment concentrations <br />it is anticipated that bedload flowing past the station above Rangely equals 44,940 tons per year, <br />resulting in a total sediment yield at the station of 494,380 tons per year or 0.10 acre-foot per squaze <br />mile per year. This low basinwide yield relative to the lease area yield implies that a large portion of <br />the sediment in the White River comes from the lower basin areas, which agrees with the conclusions <br />of the Colorado Land Use Commission (1974). <br />ILC.2R Suifare wsfor unnlterlna Preq am The surface water monitoring program consists of <br />monitoring surface water at the following seven (7) stations: <br />SW7-1 SW6-1 <br />SW11-1 SW23-1 <br />SW24-1 SW31-1 <br />SW33-1 <br />The location of each of these stations is shown on Fgure II.C-11. Stations SW1-1, SW11-1, <br />SW31-1, SW23-1, and SW24-1 are crest stage gages with single stage samplers and are designed <br />to measure the crest of flow events and collect samples as the result of those events. Stations <br />SW6-1 and SW33-1 are the locations of stock watering ponds where grab samples are to be <br />collected. SW72-1 and SW11-2 were stations where grab samples 'from the White River were <br />collected. At stations SW6-1, SW33-1, SW12-1 and SW11-2 only water samples are collected for <br />analysis. Crest gage and water sample station SW23-1 is to be monitored only if there is discharge <br />from the sediment pond (RP-1) located below the refuse disposal area. To date, January, 1994, that <br />has not occurred. Crest gage and sample station SW24-1 along Red Wash above the mine was <br />washed out by a flash flood in the Spring of 1983. Grab samples were collected at SW24-1 until July <br />1986 when a new single stage sampler was installed. The stock water ponds at SW6-1 and SW33-1 <br />(Renewal q2, 1/94) II.C-47 <br />
The URL can be used to link to this page
Your browser does not support the video tag.