2020-09-08_PERMIT FILE - M2020029

• Permit No: M2020029
• IBM Index Class Name: Permit File
• Doc Date: 9/8/2020
• Doc Name: Adequacy Review Response
• From: Applegate Group Inc.
• To: DRMS
• Email Name: DC1
• Media Type: D
• Archive: No

Mr. Daniel Cunningham
RE:Kiewit Carr Sand&Gravel(M-2020-029)Response to Adequacy Review Comments
August 27, 2020
Page 4 of 4
Pre-Operation Inspection Issues
During the August 12, 2020 pre-operation inspection,the following issues were noted:
• Two small ponds located within mining cells 9 and 12 were found. According to data
available from the Colorado Division of Water Resources,there are no water rights or well
permits associated with these ponds.' Additionally, these ponds are not present in the
National Wetlands Inventory.2 Review of historical aerial imagery reveal that water
appears in these ponds only intermittently,and their removal will have a negligible impact
on the prevailing hydrological balance of the area. In an abundance of caution, however,
Kiewit will obtain permission from the landowner(the State of Colorado) before draining
these ponds and mining the surrounding area. This information has been added to the
revised Exhibit G, attached.
• A USGS benchmark located on the east side of Lone Tree Creek was found. Kiewit will
coordinate with the USGS on removal and/or relocation of this benchmark before mining
begins on the east side of Lone Tree Creek.
• It was noted that Kiewit has agreements for all structures within 200 feet of the mine except
the unimproved two-track road 124. As described in our above response to item 9 of the
adequacy review, in our opinion this unimproved two-track road does not qualify as a
"significant, valuable, and permanent man-made structure" and therefore a structure
agreement with the road owner is not necessary.
Conclusion
This concludes our response to your adequacy review from August 6, 2020, as well as the issues
noted during the August 12, 2020 pre-operation inspection. If you have any questions regarding
the contents of this response, feel free to contact me at [phone] or at
iareddainskapple agate roup.com.
Cordially,
Applegate Group, Inc.
Jared Dains, P.E.
Water Resource Engineer
cc: Stephen Ceresa(Kiewit Infrastructure Company)
AG File No. 19-131
' Colorado Decision Support System Map Viewer
(https://Qis.colorado.Qov/dnrviewer/Index.html?viewer—mal2viewer),accessed August 27,2020.
2 Fish and Wildlife Service National Wetlands Inventory(https://www.fws.gov/wetlands/data/mapper.html),
accessed August 27,2020.
www.applegategroup.com Denver • Glenwood Springs • Hotchkiss (303)452-661 1