Regional Haze Rule Best Available Retrofit Technology

Government to Government Consultation

Navajo Nation Environmental Protection Agency

NGS• BART

(PENDING)• NOx

• Mercury (Final)• Coal Ash Rule• Climate Change

FCPP• BART (FINAL)

• NOx, PM• Mercury (Final)• Coal Ash Rule• Climate Change

SJGS• BART (STAYED)

• NOx• Mercury (Final)• Coal Ash Rule• Climate Change

Coal Fired EGU’s Surrounding Navajo Nation

EPA R9

Navajo Nation Comment Team

Navajo Nation President

NNEPA Executive Director

Air & Toxic Department

Manager

Air Quality Attorney

Operating Permit Program

Navajo Division of Natural Resources

Natural Resource Attorney

NN Attorney General

Water Rights Unit Attorney

Navajo NationVice President

Regional Haze Rule (RHR)40 CFR Subpart §51.300-51.309

• The Clean Air Act requires (Best Available Retrofit Technology) BART review when any source that “emits any air pollutant which may reasonably be anticipated to cause or contribute to any impairment of visibility” in any 156 Federal Class I area

• There are sixteen (16) and eleven (11) Class I area within 300 km (186 mi) radius of the Four Corners Power Plant and Navajo Generating Station

• Predicted visibility impact with baseline emissions exceeds 0.5 delta- deciview

Regional Haze Visibility Impact

Best 24-hr avg visibility Worst 24-hr avg visibility

2011 2064

Timeline For Proposed Activities

“Goal is to achieve natural background levels by 2064 (i.e., no manmade visibility impairment)”

53 Years

Every 10 years beginning in 2018 the previous SIP/FIP must be updated to account for current visibility and progress made toward the 2064 goal 6

Federal Class 1 Areas Within NGS & FCPP

BART Five Factor Analysis40 CFR § 51 Appendix Y

Cost of Compliance Energy and non-air quality environmental impacts of compliance

Existing pollution control technology at

the source

Remaining useful life of the source

Degree of visibility improvement which may be anticipated

from the use of BART

Unit 4 &5750MW per unit Unit 3

280MW

Unit 1 &2185MW per unit

Four Corners Power PlantPre- BART Operation

APS = 100% unit 1,2,3, Unit 4,5 : SCE 48 %, APS 15%, PNM 13%, SRP 10%, EPE 7%, TEP 7%

Unit 4 &5750MW per unit Unit 3

280MW

Unit 1 &2185MW per unit

Four Corners Power PlantBetter Than BART Proposal

APS = 100% unit 1,2,3, Unit 4,5 : SCE 48 %, APS 48+15=63%, PNM 13%, SRP 10%, EPE 7%, TEP 7%

S C R

Navajo Generating Station (NGS) BART Decision Pending !!!!

Unit 1, 2 and 3 = 750 MW each

U.S.BOR =24.3%, SRP = 21.7%, LADWP = 21.2% , APS = 14%, NPC = 11.3%, TEP = 7.5%

NGS Studies

San Juan Generating Station BART-Nation Position

EPA R6 BART FIP• NMED Failed to

Submit RH SIP• SCR on all Four

Units• BART FIP will

have No Tribal Implications

• No Economic Impacts Analyzed

• Compliance timeline increased from 3 to 5 years

NMED RH SIP• SNCR on all Four

Units• Meet Presumptive

BART Limits• Visibility

Improvement aligns with SIP

• Economic Impact to NM ratepayers analyzed

• SCR cost too high compared to SNCR

Navajo Nation Position• EPA Consider NM RH SIP• EPA failed to conduct full five factor analysis• EPA analysis of no Tribal implications is not supported• Economic Impacts, Regional Cumulative Benefits

Degree of Visibility Improvement

• BART guidelines recommend use of the CALPUFF

• IMPROVE monitoring network• Western Regional Air Partnership (WRAP)• 1 ppb IWAQM default value for ammonia

background• HCL and HF Emission Factors• USEPA approval modeling protocol

Gina McCarthy, Assistant Administrator for EPA Office of Air and Radiationvisited NGS and met with Navajo Nation President Ben Shelly

on January 29, 2012

NavajoNation

G2G

EPA HQ

G2GEPA R 9EPA R 6

G2G

DOIUSBR,

NPS, BIA

Lease

Power Plants&

Coal Mines

Mercury, Greenhouse Gases

Coal Ash Rule,Ozone NAAQS

BART FCPP, NGS, SJGS

BART, CAP, EIS, Leases

EPA Policy