2020-10-27_PERMIT FILE - C1981035 ‎(22)‎

• Permit No: C1981035
• IBM Index Class Name: Permit File
• Doc Date: 10/27/2020
• Section_Exhibit Name: KII Appendix 16 Dunn Ranch LBA Technical Resources Report
• Media Type: D
• Archive: No

2nd highest daily average PM,,concentration 0th highest daily average PM_,concentration
2025 High Oil and Gas Scenario 2025 High Oil and Gas Scenario
(H)Tres Rios FO (H)Tres Rios FO
2.2 -
r 1 _ 0.35
f =—. .. _ 0.325
0.3
L 1.8 __ 1 -
, - r 0.275
1.6 ... rr --_ — 0.25
IA 0.225
4 } L
0,2
-- -� 0.175
1 g0.15
—
0.8 f i � + 0.125
0.6 _ _.i t - - � 0.1
0.075
._....�. , - �.... 0.40.025
- ---- r--.-� _I
I
Y9lm' µ9lms
median= 0.0 µgim' O max(98,107)= 2.4 µglm' median= 0.0 µgim' O max(81,t 16)= 0.4 µglm'
0 min(163,1)= 0.0 gglm O mVn(184,1)= 0.0 pg/m
81h highest 1 hour daily max NOz concentration
2025 High Oil and Gas Scenario 4th High 8 Hour Avg Daily Max Ozone
(H)Tres Rios FO 2025 High Oil and Gas Scenario
(H)Tres Rios FO
9 0.2
4t y
. -.. ,•i- a .0.14
6
5
-- 0,12
--
006
_ 2
004
ppb ppb
median= 0.0 ppb O max(67,141)= 9.2 ppb median= 0.0 ppb O max(74,142)= 0.2 ppb
O min(214,16)= 0.0 ppb Q min(3,160)= 0.0 ppb
Figure 2.2-4 Contribution to the 2025 High Oil and Gas Scenario(H)Tres Rios Field Office
(Environ 2017)
As would be expected given the plots above,the Colorado Mines (particularly the surface mines)
contribute greatly to the PM related NAAQS and visibility impacts. Although the exact King II Mine
contributions cannot be teased out of the data, it's highly unlikely that the mines emissions contribute a
significant fraction of the modeled AQRV impacts shown above, given the isolation of the facility in
relation to the impacted area and the localized nature of the PM emissions.
Dunn Ranch Area LBA and Mining Plan Modification 33
Technical Resources Report