2017-01-23_PERMIT FILE - M1980244

• Permit No: M1980244
• IBM Index Class Name: PERMIT FILE
• Doc Date: 1/23/2017
• Doc Name: Adequacy Review Response
• From: Newmont
• To: DRMS
• Type & Sequence: AM11
• Email Name: TC1
• Media Type: D
• Archive: No

Volume II of IV
Hvdrogeochemistry Evaluation/December 15,2015/Adrian Brown
3.4.2 Water Table
1. On pages 3 and 4 of Attachment 1,the text refers to an attached Plate 27.The Division
could not find a Plate 27 in either the hard copy or the digital copy of the
submittal. Please provide Plate 27.
Response: Please see responses from Adrian Brown Consultants (ABC)provided in
Attachment 5.
2. On page 3 of Attachment 1, footnotes 2 and 3 allege the Division is in error when
referring to groundwater monitoring wells GVMW-22A and GVMW-22B. The
footnotes state the Operator assumes the Division is referring to GVMW-23A
and GVMW-23B. However, on the revised Figure 2-la — Surface Water and
Groundwater Monitoring Locations submitted with the previous response,
groundwater monitoring wells GVMW-23A and GVMW-23B are not shown.
On this figure,GVMW-22A and GVMW-22B are shown to be compliance wells
located in Grassy Valley. Please explain this discrepancy.
Response: Please see responses from Adrian Brown Consultants (ABC)provided in
Attachment 5.
3. The cross-section submitted on December 9th as Plate 29 does not show enough detail
beneath the ECOSA to illustrate the relationship between the ECOSA, ECOSA
underdrains, Grassy Valley perched aquifer, Grassy Valley Creek, and the
portion of the area identified on Plate 9 (Rev. 1) as the "area where drainage
tunnels do not cause significant head change in diatreme" which underlies the
ECOSA. The vertical scale of the figure is too small to show the requested
details. The Division did not request the Carlton Tunnel elevation be shown on
this cross-section, as it is displayed on other figures submitted. Please increase
the vertical scale of the figure as necessary to show sufficient detail for the
requested features. The features of interest occur from surface to approximately
9,500 foot elevation(below the surface).Additionally,please ensure all features
are labeled on the figure, including Grassy Valley Creek and monitoring wells,
if appropriate.
Response: Please see responses from Adrian Brown Consultants (ABC)provided in
Attachment 5.
4. The cross-section submitted on December 9th as Plate 30 does not show enough detail
to illustrate the relationship between the ECOSA, the Grassy Valley perched
aquifer, Grassy Valley Creek, groundwater monitoring wells GVMW-8A and
GVMW-8B, and the areas identified on Plate 9(Rev. 1) as "post-mining Grassy
Valley capture zone" and"area where drainage tunnels do not cause significant
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