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REP05658
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REP05658
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Last modified
8/24/2016 11:36:27 PM
Creation date
11/26/2007 11:08:28 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1980001
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
1984 AHR text and data
Annual Report Year
1984
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Page 5 <br />the well is completed in. This is not unexpected since the NPDES discharge <br />is diluted by surface runoff and should have a lower TDS. <br />TDS concentrations at the NPDES discharge point do not appear unusual. <br />Point 001 had discharge for several weeks which is a change from its <br />pattern an3 its TDS levels are not extraordinary since the nak Creek <br />drainage is affected only by the railroad loadout. The discharge volume <br />from this point is so small that the effects are not apparent in <br />differences between the OK-.4 and OK-B results. The OK-B concentrations are <br />loorer than ~K-A in April and higher in ASay while the ponds were discharging <br />and higher in October when the ponds weren't discharging. <br />On the Trout Creek side, the pond's discharge was significant during <br />the middle of May as the result of the rapid snowmelt. Point 003 showed <br />higher than normal flows during this period. This was probably caused by a <br />combination of ground=.aater and rapid snowmelt. The landslide which <br />occurred on ?lay 15, 1904 had some effect on the flows, but it is difficult <br />to identify the individual effects in the data. Surface drainage was <br />delayed as the slide blocked channels and formed ponds. The location of <br />springs changed and flows at some points apparently increased. Water <br />stored in a confined aquifer was released as the strata were fractured by <br />the ground movement. The released water then combined with snowmelt to <br />generate mudflovrs and new surface runoff channels. The pond below this <br />disturbance remained intact and functioned as intended. <br />The pond in the Trout Creek drainage that treats flow from the current <br />mining on ~dest Ridge also measured increased flows during !4ay. The TDS <br />samples from both this drainage and the NPDES 003 drainage taken to•+ards <br />the end of the snowmelt runoff in early June showed the expected decrease <br />
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