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HYDRO27597
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HYDRO27597
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Last modified
8/24/2016 8:47:01 PM
Creation date
11/20/2007 8:13:11 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981025
IBM Index Class Name
Hydrology
Doc Name
NorthThompson Creek Site Information
Permit Index Doc Type
Correspondence
Media Type
D
Archive
No
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The pile was reclaimed in 1987, now entering its 5 year <br />revegetation assessment. Establishing revegetation was a problem on the slopes and in <br />addition to drill seeding it was hand sown on the eastern and western slopes. Hand sowing <br />seems to have been more effective than the drill. Grasses are abundant, but woody stems <br />and fortis are few. Woody stems that do exist are: Woody rose and rabbit brush. <br />There are two clean water diversion ditches, D-9 and D-10, on the eastern and <br />western side of the refuse pile that are heavily ripraped. Minor erosion may occur along <br />the eastern ditch where the slope dramatically drops to f ollow the topography. Ditch D-7 <br />is up above the refuse area, to the north side of the main road. <br />HYDROLOGICAL BALANCE <br />surface Water monitoring <br />Beginning in 1981, 2 sites upstream and downstream respectively are monitored <br />biannually for pH, EC and temperature. PH values range from 8.4 at high f low to 7. 0 at <br />base f low, a neutral pH with a calcium carbonate character. <br />Waters are classified as Class 2 for recreation, and Class 1 for fish and aquatic life. <br />There are two NPDES outfalls at the site, 001 and 007. 001 is for the treatment <br />system and 007 located south of the main road down from Portal #3 at the far west end of <br />the site. (see D-4-7 <br />map) 001 discharges at rate of 30-40 gpm. and 007 at about 5-7 gpm. <br />Ground Water Monitoring <br />Wells are D1-A and D2-A, at the base of the refuse area. TDS, water quality, pH <br />and EC are all seasonally effected, with low values in June (spring runoff) and high in the <br />fall, August and September. All parameters meet the standards except for Copper, due in <br />part to downstream shale and coal outcrops. <br />Ditches and Culverts <br />There are 4 ditches to check: D-9 and D-10 on the sides of the refuse pond, all <br />heavy rip rap, ditch between the long pond and T1 and T2 also heavy rip rap with a 4011+ <br />culvert to the other side of the access road, and the ditch from AML's portal Mine #2 <br />wetland site down to the ditch, also heavy rip rap. <br />of course the ditch along the main roadside can also be checked for integrity as <br />well. <br />There are two culverts on site. one between the long pond and T1, already <br />mentioned above and one exiting P-3, under the main road across from the orange metal <br />entrance gate. <br />
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