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 2 of 4
7. As outlined in the response to item #1, it is Kiewit's intent that the permit boundary
encompasses all 640 acres within Section 36.
8. The owner of the fence along the property boundary is the State of Colorado; this
information has been added to the Exhibit C-1 map.
9. The rail line loop adjacent to Cell 1 is owned by L.G. Everist and is now labeled on the
Exhibit C-1 map. As discussed during the pre-operation inspection on August 12,2020, in
our opinion the unimproved two track road designated as County Road 124 should not be
considered a "significant, valuable and permanent man-made structure" for the purposes
of this mining application and so it has been left off the map.
Rule 6.4.4 Exhibit D—Mining Plan
10. The attached Exhibit C-1 map more clearly labels the buffer around cultural resources on
the site.
11. The proposed creek crossing is shown and labeled on the attached Exhibit C-1 map. As
discussed previously, it is Kiewit's intent that the entire 640-acre section be included in the
permit boundary and thus this proposed creek crossing would be included.
12. Kiewit acknowledges that any new roads built to access or haul mined material will be
considered affected land. Note that the proposed north haul route to County Road 126
through land owned by the Lazy D Grazing Association has been removed from Exhibit
C-1. Kiewit no longer anticipates using this proposed road as an access point.
13. Kiewit estimates that each cell will be mined for a duration of approximately 2 years
(depending on market conditions).
14. Kiewit will not be using explosives on this mining operation.
15. The proposed culvert will likely be an arched corrugated metal pipe with a minimum width
of 5 feet, or a culvert of a different shape with an equivalent flow area. This same sized
culvert is used to pass Lone Tree Creek flows beneath Weld County Road 120 located just
downstream of the site.
Rule 6.4.5 Exhibit E—Reclamation Plan
16. Kiewit has found that compacting topsoil to 90%of standard proctor reduces the potential
for erosional loss and have not noted a negative impact on vegetation establishment.
However, for the purposes of this permit, Kiewit will agree not to conduct such
compaction.
17. As discussed previously, it is Kiewit's intent that the entire 640-acre section be included in
the permit boundary,which will therefore encompass the affected area associated with the
proposed creek crossing.
18. An updated Exhibit E stating the type of reclamation that the applicant proposes to achieve
and why it was chosen is attached.
19. The proposed reclaimed land use of rangeland will be compatible with the surrounding
land uses,which include industrial and rangeland. It is also compatible with local land use
plans given that this area of Weld County is zoned agricultural.
www.applegategroup.com Denver • Glenwood Springs • Hotchkiss [phone]