2018-12-03_PERMIT FILE - M2018036

• Permit No: M2018036
• IBM Index Class Name: Permit File
• Doc Date: 12/3/2018
• Doc Name: Adequacy Review Response #2
• From: Zymin Corporation
• To: DRMS
• Email Name: ERR
• Media Type: D
• Archive: No

T_,ymin Corporation— Adequacy Review M-2018-036
October 13, 2018
Page 2 of 3
b. Maps A-1,A-2,and A-3 delineate the 20-acre claim boundary but not the proposed 9.1-acre
permit boundary. In accordance with Rule 6.2.1(2)(d),please update these maps to depict the
permit boundary within the claim boundary OR just include the proposed permit boundary.
c. Maps A-4,A-5,and all of the Exhibit E maps lack a scale and state"not to scale". In accordance
with Rule 6.2.1(2)(e),please update these maps to include an appropriate scale(the acceptable
range of map scales shall not be larger than 1"=50' nor smaller than 1"=660').
6.3 SPECIFIC PERMIT APPLICATION EXHIBIT REQUIREMENTS—110 LIMITED OPERATIONS
EXHIBIT B-Site Description(Rule 6. .2)
5. Within Exhibit B,the Applicant states a copy of a brief report(Geology of the Ten Percenter Mine...)is
attached to the application to document some of the previous work on the claim,however,this report was
not attached the application.Please provide the Division with the referenced report.
6. Within Exhibit B,the Applicant refers to a USFS biological and environmental evaluation on file with
DRMS and USFS South Park Ranger District offices for a detailed description of the vegetation in the area
of the proposed distubance.Please provide a copy of this report or provide a description of the vegetation
characteristics in the area of the proposed operations as required by Rule 6.3.2(1).
7. Within Exhibit B,the Applicant provided a Custom Soil Report containing a soil map on Page 8 of the
report. Please revise this map to include the proposed permit boundary.
8. Within Exhibit B,the Applicant states there are no permanent man-made structures within 200 feet of the
proposed permit boundary,however,after review of the submitted maps,it appears USFS Road 201 is
within 200 feet of the permit boundary.Please revise Exhibit B to identify all permanent man-made
structures within 200 feet of the permit boundary as required by Rule 6.3.2(b).
EXHIBIT C-Mining Plan(Rule 6.3.3)
9. Within Exhibit C,under the heading 6.3.3(l)(e)subheadings 1 and 2,the Applicant discusses initially
mapping the deposit with prospect pits and trenching using hand tools and mechanized equipment prior to
open pit operations.Please clarify if these development disturbances are included in the 2-acre limited bond
or will be a separate task.
10. Within Exhibit C,under the heading 6.3.3(1)(e)subheading 4,the Applicant discusses stockpiling waste
rock/overburden proximal to the pit.Please confirm waste rock/overburden stockpiles will be placed on
affected lands which have had the top 6 inches stripped.
11. Within Exhibit C,under the heading 6.3.3(1)(e)subheading 4,the Applicant states highwalls will be
benched and the maximum height between benches will be 4 feet.Please provide the minimum width of
these benches.Please also provide a cross-sectional diagram to depict the proposal.
12. In accordance with Rule 6.5(2),please provide engineering stability analyses for the proposed benched
highwalls. In lieu of submitting engineering stability analyses,the Applicant may commit to maintaining a
3H:1 V ratio for distance from the permit boundary to depth of excavation(i.e an excavation of 15 feet
should be no closer to the permit boundary than 45 feet). This commitment will help ensure protection of
off-site lands in accordance with C.R.S. 34-32-116(7)(h).Please note,throughout the life of mine,the
Applicant may submit a Technical Revision to the permit addressing slope stability analyses to allow deeper
excavations near the permit boundary.