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2018-11-26_REVISION - C1980004 (2)
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2018-11-26_REVISION - C1980004 (2)
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Last modified
11/29/2018 10:29:20 AM
Creation date
11/29/2018 10:25:30 AM
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Template:
DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
Revision
Doc Date
11/26/2018
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
McClane Canyon Mining, LLC
Type & Sequence
RN8
Permit Index Doc Type
Findings
Email Name
CCW
Media Type
D
Archive
No
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3. Monitoring of all non -seep inflows into the mine to include source, <br />quantity, duration and quality (pH, electrical conductance, and temperature). <br />4. Monitoring of quantities of water discharged from the mine, <br />consumed in the mine, and imported for use in the mine. <br />Results of the quarterly ground water monitoring are submitted to the Division during <br />the month following the end of that quarter. Monitoring results and evaluation for ground water and <br />surface water are submitted in an annual hydrologic report (AHR). The AHR will detail inflows, <br />discharges and consumption of water within the mine and shall be structured around the normal <br />"water year" (October 1 through September 30). The annual report will also include baseline water <br />quality data in addition to the quarterly monitoring data to allow for comparison of baseline and <br />"during mining" conditions. The annual report for the previous water year will be submitted no later <br />than March 31 of each year. <br />SURFACE WATER <br />Surface water hydrology description is provided in Sections 4.2.2 and 4.2.6 of the <br />permit application. The surface water monitoring program is described in Section 4.2.7. Required <br />analytical monitoring parameters are specified in Table 4.2-15, and monitoring sites are depicted on <br />Figure 4.2-2. <br />East Salt Creek and McClane Creek flow data are obtained by measuring rated culvert <br />depths. In 1996, the downstream sampling point on East Salt Creek was relocated to the bridge over <br />East Salt Creek in the Munger Canyon Mine permit area, and flow measurements are made at that <br />location. <br />Surface water quantity and quality will be monitored upstream and downstream of the <br />disturbance in McClane Canyon and on East Salt Creek upstream and downstream of the confluence <br />of McClane Canyon and East Salt Creek in a manner approved by the Division. The monitoring plan <br />was submitted under 2.05.6(3)(b)(iv), and includes the following, pursuant to 4.05.13(2). <br />SW -1 and SW -8 (East Salt Creek upstream and downstream): Quarterly flow <br />and quality. <br />SW -2 (McClane Creek below mine bench): Flow and quality, once during spring <br />snowmelt, and once during storm event runoff. <br />SW -5 (McClane Creek above mine bench): Water quality samples twice a year, <br />once during spring snowmelt, and once during storm event runoff. <br />The water quality monitoring parameter list is outlined on Table 4.2-15. A <br />reduced parameter list (Short Suite for Temporary Cessation) is included in the table. A notation on <br />the table specifies that the short suite is to be implemented only after mining has ceased for a period <br />of at least 6 months. <br />Monitoring results and evaluation are submitted in an annual hydrologic report (AHR). <br />The AHR will assess observed impacts to the surface water system, and will be structured around <br />the normal "water year" (October 1 through September 30). The annual report will also include <br />baseline water quality data in addition to the quarterly monitoring data to allow for comparison of <br />
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