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2007-11-07_HYDROLOGY - M1977300
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2007-11-07_HYDROLOGY - M1977300
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Last modified
8/24/2016 3:18:19 PM
Creation date
12/3/2007 4:13:29 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1977300
IBM Index Class Name
HYDROLOGY
Doc Date
11/7/2007
Doc Name
Hydrologic evaluation of mine closure & reclamation
From
Whetstone Associates
To
Cotter Corpoartion
Media Type
D
Archive
No
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~rh~~artrwalder ~4ine -Hydrologic Evaluation of >tgine Closure and Reclamation 31 <br />occurring in June (2Q9 gpm) (Figure 19). This pattern is consistent with the annual distribution of <br />precipitation shown in Table 2 and Figure h, but comparison of peak precipitation and intiltration indicates <br />a lag time of approximately I month for precipitation to infiltrate into the mine. If it is assumed that inflow <br />rates during February and March represent the infiltration to the mine during January and February when <br />the ground is frozen and intiltration is essentially negligible, the average inflow to the mine by intiltration <br />of precipitation to the upper levels can be calculated on a monthly basis for the referenced time period <br />(Table 1-l). <br />Table 14. Average Monthly Inflow to the Mine from Infiltration of Precipitation, 1995 - 1999 <br /> ~~cra~,c InlloN <br />~lunth <br /> ( rml <br />.Inman <br />Fchruan 0-fl <br />~4arch II,U <br />April ~? <br />~~~ 17.7 <br />luny 2K.7 <br />July 9.7 <br />August 13.2 <br />tirptemlxr 10? <br />l )rtotkr R.0 <br />\mrmhrr 7 .1 <br />a l 0913.071 1 16 wnersrone ~ssaciasrs . <br />r-yu-c -a. n~c.vyc ... ................ ....._.- ~ ----- <br />
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