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2017-02-03_PERMIT FILE - C1980004 (2)
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2017-02-03_PERMIT FILE - C1980004 (2)
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Last modified
7/13/2017 7:21:40 AM
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7/13/2017 7:19:23 AM
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DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
Permit File
Doc Date
2/3/2017
Section_Exhibit Name
Volume I Sections 2.03 & 2.04
Media Type
D
Archive
No
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2.04.7 Hydrology Description <br />shown on Figure 4.2-2. The six alluvial wells were apparently sealed and <br />eight ground water monitoring wells were subsequently installed. <br />Groundwater monitoring wells GW -2, 4, 7 & 8 were sealed in 2007. GW - <br />10 was sealed in 2012. <br />Baseline alluvial wells shown in Tables 4.2-1 through 4.2-5 are not the <br />same wells as the GW wells currently being monitored. Baseline data for <br />the GW wells is shown for Table 4.2i. A typical well completion diagram <br />for the GW wells is shown in Figure 4.1-7. <br />Well GW -1 is 14.3 feet deep and monitors water in the alluvium of East <br />Salt Creek. As provided in detail in the AHR's, the static water level varies <br />with season and over the last five years (2007 - 2011) has averaged 12.5 <br />feet in the first quarter, 10.7 feet in the second quarter, 9.0 feet in the third <br />quarter and 12.3 in the fourth quarter. Average PH varies from 7.3 to 7.7 <br />and the average conductivity varies from 3840 to 7284 umhos/cm. <br />Well GW -3 is 85.5 feet deep and monitors water in the alluvium of East <br />Salt Creek below Munger Canyon. As provided in detail in the AHR's, the <br />static water level varies with season and over the last five years (2007 - <br />2011) has averaged 38.3 feet in the first quarter, 38.0 feet in the second <br />quarter, 37.0 feet in the third quarter and 38.4 feet in the fourth quarter. <br />Average PH varies from 7.1 to 7.5 and the average conductivity varies <br />from 4260 to 4560 umhos/cm. <br />Well GW -9 is 53.5 feet deep and monitors water in the alluvium of East <br />Salt Creek below the excess material stockpiles. As provided in detail in <br />the AHR's, the static water level varies with season and over the last four <br />(2008 - 2011) years has averaged 26.6 feet in the first quarter, and 26.0 <br />feet in the second through fourth quarters. Average PH varies from 7.2 to <br />7.4 and the average conductivity varies from 8575 to 9163 umhos/cm. <br />Well GW -9 was installed in 2007 and therefore no data is available for the <br />well until water year 2008. <br />Water Quality Control Division requires the Operator to select points of <br />compliance. Points of compliance are defined as one or more points or <br />locations at which compliance with applicable groundwater standards <br />must be achieved. Monitoring well GW -3 will serve as the point of <br />compliance for the mining operations. <br />PR -02 2.04-18 03/13 <br />
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