2019-12-11_REVISION - M1977211

• Permit No: M1977211
• IBM Index Class Name: REVISION
• Doc Date: 12/11/2019
• Doc Name: Adequacy Review Response
• From: Castle Aggregate
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

J � �
6.4.12 EXHIBIT L—Reclamation Costs
20. Imported Material:The first paragraph of the Overview on p. L-2 states the plan calls for
approximately 2,345,000 yd3 of imported fill material. Where are the costs for this material included in
Exhibit L?
Response: Castle has been importing material for free or by charging a tipping fee.This process is
expected to continue;therefore, no costs were included to import the material. Castle is currently
negotiating with the City of Colorado Springs and private companies to develop the property adjacent to
the mine. Regardless of the development type, all or nearly all of the imported material necessary to
reclaim the mine can be provided by this development with the costs to deliver the material to the
existing quarry stockpile area burdened by the developer.
21. Material Swell:The first bullet lists the swell factor as 20%. It does not appear to be involved in the
cut and fill volumes presented. Please explain where this factor is used in the earth moving balance.
Response: The cut and fill volumes included in Table D-1 and used in the Exhibit L calculations include
the 20%swell factor applied to the material excavated onsite (1,530,000 cubic yards). There was no
swell factor applied to the imported fill, because it is imported as a loose material and placed in its
compacted state with a volume of 2,030,000 cubic yards.
22. Drill and Blast Material:The fifth bullet states 247,000 yd3 will be extracted by drilling and blasting.
Worksheet Nos. 3 and 15C list 246,299 yd3. Please explain the extra 701 yd3.
Response: This was rounded up in the report. The reclamation cost estimate was amended to state
246,299 yd3 to match the worksheets 3 and 15C.
23.Worksheets and Tables:There are 20 worksheets and tables included in Exhibit L with various
numerical and alpha-numerical identifiers("Worksheet No. 2"to "Table 50-A-26"). Given they are non-
sequential, please provide an index for all the intended worksheets and tables.
Response: A table of contents has been added to Exhibit L.
24. Cross-References:There appears to be some lapses in the following references(please address):
a. Worksheet No. 8B yields 7,246 hours for a Cat 345 loader that are to be used in Worksheet
13.There is no entry of 7,246 hours in Worksheet 13.
b. Worksheet No. 8C(Upgrading of roads)yields 333 hours for a Cat 345 loader that are to be
used in Worksheet 13.There is no "Upgrading of roads" entry of 333 hours in Worksheet 13.
Response: Exhibit L has been revised to address this comment.
Pikeview Quarry Amendment 4, Response to Adequacy
December 11, 2019