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REP42265
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REP42265
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Entry Properties
Last modified
8/25/2016 12:44:07 AM
Creation date
11/27/2007 9:32:54 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981020
IBM Index Class Name
Report
Doc Date
1/31/2006
Doc Name
2004 AHR Review Memo
From
Dan Mathews
To
Sandy Brown
Annual Report Year
2004
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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<br />CDPS permit specifies quarterly reporting of TDS, but our records do not include TDS <br />reporting for the 3rd quarter, 2005. Operator will need to address this apparent discrepancy. <br />Non-seep inflow monitoring and field parameter reporting is required...lnflowqugntity is <br />calculated/reported in Table 1, described in Narrative, and source locations depicted on <br />Figure 3 Mine Map. Since inflow is characterized as seepage, specific inflow locations were <br />not monitored. However, field parameters and a full suite lab analysis was presented in <br />Table 6, from gone-time sample of mine discharge in the first quarter of 2005. <br />Surface Water Sampling <br />East Salt Creek monitoring sites (SW-1, SW-4, and SW-8) were monitored quarterly as <br />required. All required field and laboratory parameters were analyzed during the quarters <br />when samples were obtained. Clarification was provided as requested in last year's review, <br />that the upstream site SW-1 is not sampled during mine discharge events. Note that, <br />following installation of proposed Culvert "P" on lower McClane Creek, minewater that is <br />pumped into McClane Creek will enter East Salt Creek downstream from SW-1, rather than <br />upstream of SW-1 as is currently the case. <br />• McClane Creek is to be sampled "twice a year if possible". Upstream site SW-1 was <br />reported dry during each quarterly check. One grab sample was collected during a flow <br />event at the lower site SW-2, during the 3'd quarter, 2005. <br />Munger <br />Required analytical parameters were provided for the specified laboratory parameters. Two flow <br />events were captured at the lower site on Munger Creek (SW3). One event was captured at <br />SW-7 upstream site on Munger. Munger site SW-6 (below the mine and above the north fork of <br />Munger) was reported as dry during the quarterly sampling visits. <br />There is one apparent discrepancy associated with CDPS reporting for the Munger Waste <br />Disposal Area sediment pond. The Division's inspection report for September 12, 2005 describes <br />the affects of a large storm event in the Munger watershed. High flows in the ephemeral drainage <br />adjacent to the pond embankment had backed up into the sediment pond through the emergency <br />spillway. The inspection narrative stated that "remedial measures will need to include dewatering <br />of the sediment pond and removal of the sediment...". The report further noted that the operator <br />was making preparations to initiate pumping as soon as possible and stated that discharge would <br />be sampled and reported in conformance with CDPS permit requirements. The following report <br />for the Division's inspection of October noted that the pond sediment had been excavated, <br />implying that pumping to dewater the pond had been previously completed. The CDPS reports <br />we have on file for September and October 2005 for the sediment pond are marked "No <br />Discharge". The operator will need to explain this apparent discrepancy. <br />Summary <br />There are a couple apparent discrepancies associated with CDPS reporting that the operator will <br />need to address. Other monitoring, reporting, and hydrologic impact assessment appears in <br />general to have been conducted in accordance with permit requirements. DMG PHC review is <br />requested. <br />
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