Look-up tables and scenario notes for BART modeling of three Arizona power plants sjb 2012-06-28

AEPCO Apache Control scenarios Lookup table names: 'apache_scen' and 'apache_scen_'

modscen scenarios unit 1 unit 2 unit 3 short decription UNC description Notes on UNC

base Base OFA OFA OFA Base (OFA) Base (u2 LNB) Orig. assumed u2 had LNB

ctrl1 Ctrl-1 OFA OFA LNB LNB u3 u2 Base LNB, u3 LNB/OFA Orig. assumed u2 had LNB

ctrl2 Ctrl-2 OFA SNCR (no LNB) SNCR + LNB SNCR (u2 no LNB) LNB/SNCR SNCR -30% on pre-LNB u2; u3 ~OK

ctrl3 Ctrl-3 OFA SCR + LNB SCR + LNB SCR LNB/SCR SCR+LNB -87% on u2 is OK; u3 ~OK

ctrl4 Ctrl-4 OFA OFA SNCR + LNB SNCR u3 u2 Base LNB, u3 LNB/SNCR No LNB % used on u2; u3 OK

ctrl5 Ctrl-5 OFA OFA SCR + LNB SCR u3 u2 Base LNB, u3 LNB/SCR No LNB % used on u2; u3 OK

ctrl6 Ctrl-6 OFA SNCR (no LNB) SCR + LNB SNCR u2 (no LNB), SCR u3 u2 LNB/SNCR, u3 LNB/SCR SNCR -30% on pre-LNB u2

ctrl1_R Ctrl1-R OFA LNB LNB LNB LNB/OFA Rev. LNB -30% applied OK on both

ctrl2_R Ctrl2-R OFA SNCR + LNB SNCR + LNB SNCR LNB/SNCR Rev. SNCR & LNB each -30% OK on both

ctrl3_S Ctrl3-S OFA SCR+LNB; w/SO4 SCR+LNB; w/SO4 SCR; w/SO4 LNB/SCR SO4 Sensitivity SCR+LNB -87% on u2 is OK; u3 OK

"-R" for Revision: unit 2 base emissions recognized as pre-LNB, LNB -30% applied OK; unit 3 SNCR+LNB -51% instead of -50%; Ctrl-3 was OK w/o revision

ATP knew Apache had no LNB; all % reductions computed from CY2008-2010 average annual emissions and are OK.

APS Cholla Control scenarios Lookup table names: 'cholla_scen' and 'cholla_scen_'

modscen scenarios unit 2 unit 3 unit 4 short decription UNC description Notes on UNC

base Base COFA COFA COFA Pre-LNB Base; old SO2 Base (LNB/SOFA) Pre-LNB max used

ctrl1 Ctrl-1 SNCR (preLNB) SNCR (preLNB) SNCR (preLNB) SNCR (preLNB; old SO2) LNB/SNCR SNCR -30% on pre-LNB

(none: old ctrl2) Ctrl-2 SCR (preLNB) SCR (preLNB) SCR (preLNB) SCR (preLNB; old SO2) SCR SCR .05: -84%, -80%, -81% on pre-LNB

ctrl3 Ctrl-3 COFA COFA SNCR (preLNB) SNCR u4 (preLNB; old SO2) u2 SNCR u4 SNCR % on pre-LNB

ctrl4 Ctrl-4 COFA COFA SCR (preLNB) SCR u4 (preLNB; old SO2) u4 SCR u4 SCR .05: -81% on pre-LNB

ctrl5 Ctrl-5 COFA SNCR (preLNB) COFA SNCR u3 (preLNB; old SO2) u3 SNCR u3 SNCR -30% on pre-LNB

ctrl6 Ctrl-6 COFA SCR (preLNB) COFA SCR u3 (preLNB; old SO2) u3 SCR u3 SCR .05: -80% on pre-LNB

basenew Basecorr COFA COFA COFA Base (COFA) Base (LNB/SOFA) This & later use ADEQ BART SO2

base_r Rev Base LNB+SOFA/COFA LNB+SOFA/COFA LNB+SOFA/COFA Base (LNB) Base (LNB/SOFA) Rev. This & later use post-LNB max emissions

ctrl1_r CTRL1_R SNCR + LNB SNCR + LNB SNCR + LNB SNCR LNB/SNCR Rev. SNCR -30% on post-LNB

ctrl2 CTRL2 SCR (preLNB) SCR (preLNB) SCR (preLNB) SCR (preLNB) SCR SCR % on pre-LNB

ctrl2_r CTRL2_R SCR + LNB (% fr. '08-10) SCR + LNB SCR + LNB SCR (u2 CY2008-10) SCR Rev. SCR % on post-LNB, but u2 -80% old

ctrl2_r2 ctrl2_r2 SCR + LNB SCR + LNB SCR + LNB SCR SCR Addl Rev. All CY2010 base TPY; u2 SCR -83%

First set of runs used SO2 from max CAMD data; then switched to 0.15 lb/MMBtu per ADEQ's BART determination for SO2

Also, earlier runs applied % control to pre-LNB CAMD emissions, so they reflect SNCR or SCR *without* LNB; later"_R" runs used post-LNB max daily emissions

A final change was made for ctrl2_r2 SCR: ATP's -83% reduction to get to 0.5 lb/MMBtu was based on CY2011 TPY for unit 2 (units 3 &4 already used CY2011);

 previous SCR runs derived unit 2 SCR -84% reduction from CY2008-2010 TPY, which included a mix of pre- and post-LNB emission rates.

Both CTRL2_R and CTRL2_R2 apply % SCR to post-LNB emissions; Only CTRL2_R2 uses u2 SCR % control from CY2011
Look-up tables and scenario notes for BART modeling of three Arizona power plants sjb 2012-06-28

SRP Coronado Control scenarios Lookup table names: 'coronado_scen' and 'coronado_scen_'

modscen scenarios unit 1 unit 2 short decription UNC description Notes on UNC

base Base OFA SCR @ .08 SCR.08 u2 u1 Base (LNB/OFA), u2 SCR.08Assumed u1 had LNB

ctrl1 Ctrl-1 SNCR (no LNB) SCR @ .08 SNCR (no LNB) u1; SCR.08 u2 u1 SNCR u1 SNCR -30% on pre-LNB

ctrl2 Ctrl-2 SCR @ .05 + LNB (-86% '08-10) SCR @ .08 SCR .05 (preLNB) u1; SCR.08 u2 u1 SCR.05 SCR % applied OK (but u1 % bad)

ctrl3 Ctrl-3 OFA SCR @ .05 SCR.05 u2 u2 SCR.05 Assumed u1 had LNB

ctrl4 Ctrl-4 SNCR (no LNB) SCR @ .05 SNCR (no LNB); SCR.05 u1 SNCR, u2 SCR.05 u1 SNCR -30% on pre-LNB

ctrl5 Ctrl-5 SCR @ .05 + LNB (-86% '08-10) SCR @ .05 SCR .05 (u2 preLNB) SCR.05 SCR % applied OK (but u1 % bad)

base_R Base_R LNB + OFA SCR @ .08 LNB u1; SCR.08 u2 u1 Base (LNB/OFA), u2 SCR.08 Rev. Post-LNB max CAMD basis

ctrl1_R Ctrl1-R SNCR + LNB SCR @ .08 SNCR u1; SCR.08 u2 u1 SNCR Rev. (rel. to Rev. Base)

ctrl5_S Ctrl5-S SCR @ .05 + LNB (-86% '08-10) SCR @ .05 w/SO4 SCR.05 w/SO4 SCR.05 SO4 Sensitivity

base_RS base_rs LNB + OFA SCR @ .08 w/SO4 SCR .08 u2 w/SO4 Base Rev. SO4 Sensitivity

ctrl5_R ctrl5_r rev. SCR @ .05 + LNB SCR @ .05 SCR .05 SCR.05 Rev. post-LNB for % and for max em. u1

ctrl5_rs ctrl5_rs rev. SCR @ .05 w/SO4 + LNBSCR @ .05 w/SO4 SCR .05 w/SO4 SCR.05 Rev. SO4 Sensitivity (rel. to Base_R_S)

base_q LNB + OFA LNB + OFA LNB only (on both) Base LNB for both units sjb u1=base_r; u2=post-LNB CAMD

ctrl1_rs SNCR + LNB SCR @ .08 w/SO4 SNCR u1; w/SO4 u1 SNCR Rev. w/SO4 sjb u1=ctrl1_r, u2=base_rs

ctrl2_rs rev. SCR @ .05 w/SO4 + LNBSCR @ .08 w/SO4 SCR .05 u1; w/SO4 u1 SCR.05 Rev. w/SO4 sjb u1=ctrl5_rs; u2=base_rs

ctrl6_rs SCR -90% from LNB w/SO4 SCR -90% from LNB w/SO4 SCR -90%; w/SO4 SCR -90% w/SO4 sjb LNB base_q, -90% (both u1 & u2)

"_R" for Revision means post-LNB max emissions were used as basis; 'scenarios' names sometimes have an underscore where 'UNC lookup' has a hyphen

ATP knew Coronado had LNB; u1 % reduction from mixed pre- & post-LNB CY2008-10, see revised; u2 % from post-LNB CY2011, OK.

Unit 2 was modeled directly at 0.05 and 0.08 lb/MMBtu (& max heat MMBtu/hr), not as a % reduction from a base period.

Modeling for base_q, ctrl1_rs, ctrl2_rs, and ctrl6_rs were done by sjb
Lists from "AZ_BART_sources_final_all-Task7-8_05_15_2012.xlsx"

TEP Sundt 

(Irvington) 

Catalyst Paper - 

Snowflake 

Chemical Lime 

Co. - Nelson 

Plant

Apache Station 

(AEPCO)

APS Cholla 

Power Plant 

SRP Coronado 

Station

chir chir brca chir care band TEP Sundt (Irvington) chir chrw gali gila maza moba pimo sagu sian

chrw gali grca chrw gali chir Catalyst Paper - Snowflake chir gali gila grca maza moba pefo pimo sagu

gali gila jotr gali gila chrw Chemical Lime Co. - Nelson Plant brca grca jotr maza pimo sian supe syca zion

gila grca maza gila grca gali Apache Station (AEPCO) chir chrw gali gila maza moba sagu sian supe

maza maza pimo maza maza gila APS Cholla Power Plant care gali gila grca maza meve moba pefo pimo

moba moba sian moba meve grca SRP Coronado Station band chir chrw gali gila grca maza meve moba

pimo pefo supe sagu moba maza

sagu pimo syca sian pefo meve

sian sagu zion supe pimo moba

supe sian sagu pefo

supe sian pimo

syca supe sagu

syca sape

sian

supe

syca
supe

sian supe syca

sagu sian supe syca

pefo pimo sagu sape sian supe syca