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REP11560
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REP11560
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Entry Properties
Last modified
8/24/2016 11:42:42 PM
Creation date
11/27/2007 12:42:11 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981011
IBM Index Class Name
Report
Doc Date
2/25/2002
Doc Name
2001 AHR (Annual Water Reports)
From
Greg Lewicki & Associates
To
DMG
Annual Report Year
2001
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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Annual Water Report <br />Year 2001 <br />Apex #2 Mine <br />Permit C-81-011 <br />Report by Greg Lewicki, P.E. <br />Surface Water <br />R~~-,, , TD <br />F ~~ 2 ; ~G02 <br />D1V stun of ~,~ine;als and GeelOgY <br />As in previous years, the single sediment pond for the entire disturbed area did not <br />discharge; it only contained water in the spring as a result of snowmelt. All disturbed <br />area is channeled into the sediment pond except for a small exemption area of less than <br />0.1 acre located at the reclaimed office area. The sediment pond discharge is permitted <br />with the Colorado Department of Health as NPDES Permit #COG-850041. (The permit <br />was formerly CO-0036668). Quarterly DMR forms are attached for the year. Quarterly <br />sediment pond inspections revealed no problems with functionality of the pond. These <br />inspections are attached. <br />Trout Creek, the perennial stream located adjacent to the reclaimed yard area, was <br />tested quarterly for pH, Specific conductance, temperature and flow. The sample <br />location was moved to immediately downstream of the reclaimed area. The data for <br />2001 data in Trout Creek showed normal conditions, with normal flows in Trout Creek. <br />The water has historically been of good quality and compares favorably to the baseline <br />analysis included in the permit. Iron, zinc and arsenic are in low concentration. The <br />summer levels show relative drought conditions. Ph levels are always good (7.8-82) <br />and total dissolved solids of the stream is 170 ppm. There are no signs of water quality <br />changes from previous years. <br />All portal seals are intact and do not show any signs of seepage or other problems. The <br />mine or its reclamation has not had any adverse effect on the prevailing hydrologic <br />balance. The diversion ditch above the minesite along the residential access road <br />requites cleaning as does the culvert crossing of this diversion under the Trout Creek <br />Road. <br />Ground Water <br />In 1997 a revision was submitted to install two new shallow groundwater monitoring <br />wells upstream and downstream of the mine reclaimed area. These wells were installed <br />in 1997 and replaced the old upstream and downstream wells. This was done since the <br />downstream welt and surface water monitoring points were near the P&M Edna mine <br />and were recording fluctuating data. The ls` water sampling of both wells in 1998 <br />demonstrated normal water quality. <br />
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