2019-06-28_REVISION - M1977004

• Permit No: M1977004
• IBM Index Class Name: REVISION
• Doc Date: 6/28/2019
• Doc Name: Request For Amendment To Permit
• From: Homestake Mining
• To: DRMS
• Type & Sequence: AM1
• Email Name: DMC
• Email Name: THM
• Media Type: D
• Archive: No

Homestake Mining Company June 17.2019
Regular(112d)Operation Reclamation Permit Application Package
Project Name: Pitch Mine Reclamation Project-Reclamation Plan
Date of Submittal: March 1,2019
File Name: SRCE_Version_1_4_1_016c_2019-06-06_amh_User 3 Updates.xlsm
Model Version:Version 1.4.1
Cost Data:User Data
Cost Data File:SRCE_Cost_data-USR_l_l 2_2019-05-14.xlsm
Cost Estimate Type:Surety Cost Basis:Northern Nevada
Well Abandonment
Labor I Equipment I Materials I Totals
Pod-t-.Dewalenng.Infillrabon Wells $0 $0 $0 SO
Monitoring Wells $13,267 $36.262 $508 $50.027
TOTALS1 $13,257136,252 OB 0,037
Monitoring Well Closure
them
oral
Number Top Hok Casing Gran Volume Backfll Grouting
De scdpuon of Casing Average of Plug Volume Volume/ Per Volume Hours/
(required) ID Code Holes Diem Depth Screen" Method per It WNI,', Hok'°' per Hole' Hole
11 e bgs h bgs Isekc" tt3 cy cy cy Yr
1 RD-01 RD-01 1 4.0 35 14 Grout+B 0.090 0.06 0.08 3.1
2 RD-02 RD-02 1 4.0 35 15 Grout+B 0.090 0.06 0.08 3.1
3 RD-03 RD-03 1 4.0 34 13 Grout+8 0090 0.06 0.08 3.1
4 RD-04 RD-04 1 40 36 16 Grout+8 0090 0.07 0.08 3.1
5 P4 P4 1 4.0 299 281 Grout+8 0090 0.28 008 0,70 3.6
6 P-5 P-0 1 CO 236 230 Grout+B 0090 0.23 0.08 0.53 3.5
7 P-9 P-0 1 4.0 190 165 0rout+8 0.090 0.31 0.08 0.32 34
8 P-12 P-12 1 4.0 238 187 Grout+8 0.090 0.42 0.08 0.39 3.5
9 P-11 P-11 1 4.0 268 220 Grout+B 0.090 0,41 0.08 0.50 3.5
10 IRD-OS-01 IRD-OS-01 1 5.0 90 70 Grout+B 0.140 0.45 0.13 3.2
11 IC-10370R IC-10370R 1 5.0 208 198 Grout+B 0.140 0.39 0.13 0.66 34
12 RO-06 RD-06 1 5.0 206 180 Grout+6 0.140 0.49 0.13 0.57 3.4
13 RD-07 RD-07 1 5.0 206 180 Grout+B 0.140 0.49 0.13 0.57 34
14 RD-08 RD-08 1 5.0 206 181 Grout+B 0.140 0,49 0.13 0,58 34
15 RD-09 RD-09 1 5.0 211 185 Grout+B 0.14D 049 0.13 0.60 34
16 IC-103DOR IC-10300R 1 5.0 208 too Grout+B 0.140 0,45 0.13 0.61 34
17 IRD-MD-01 IRD-MD-01 1 54 33 167 Grow+6 0.140 0.00 0.13 0.50
18 IRD-MO-02 IRD-MD-02 1 5.0 90 12 Grow+8 0.140 0,45 0.13 3.2
19 RD-05 RD-05 1 5.0 30 10 Grout+B 0.140 0D 0,13 3.1
20 P-7 P-7 1 5.0 228 180 Grout+6 0.140 0.64 0.13 0.57 3.5
2t P-13 P-13 1 5.0 308 210 Groot+8 0.140 0.96 0.13 0.73 36
22 P-14 P-14 1 5.0 228 105 Grout+B 0.140 1.12 0.13 0.18 3.5
23 P-15 PA5 1 5,0 254 206 Grout 0.140 0.63 0.13 0.71 3.5
24 P-16 P-16 1 5.0 251 152 GroN+O 0.140 0.97 0.13 0.43 3.5
Wells abandoned per NAC 534.420 with bersonne grout placed to 50 feet above the top of the screen(see note 1).
(1)Assumes top of screen Is at or above the static water level(in unconfined aquifers)or the depth of first water encountered(in confined aquifers).
(2)Assumes 25%loss to formation for grouting
(3)Grouting only required to 50'(15.24m)above the top of screen because monitor wells are constructed with a seal in the annular space.
(4)Assumes top 10'(3m)plugged with cement.
(5)As hale plugged with Inert material(cuttings or aluvlum)above grout up to cement surface plug.
(6)See Productivity Sheet for hourly production.Minimum 1 for per hole+Pored hours per hole for move and setup(see Productivy Sheet).
(7)See Productivity Sheet for hourly production.Minimum 1 hr per hole.
Notes
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