"README" for modeling-related files

Arizona Regional Haze FIP, November 2012 - Final

covering AEPCO Apache, APS Cholla, and SRP Coronado BART

EPA Region 9

Note on Zip Archives of Modeling Files

The modeling files were first stored with no compression (e.g. wzzip -e0 

Cholla_cpf_nocomp.zip); the contents are listed in a corresponding text file. The 

"nocomp.zip" file was then compressed using LZMA compression (e.g. wzzip -el 

Cholla_cpf.zipx) to give about 99% compression.

=======================================================

APS Cholla

Remodeling of all NPR scenarios.

Changes from NPR: EPRI method for H2SO4 throughout, merged stacks for units 2 & 3, unit 1 

at 2011 CAMD SO2 emission rate to reflect recently upgraded wet FGD and also more recent 

coal (units 2, 3, and 4 remain at 0.15 lb/MMBtu ADEQ BART emission rates as in NPR); unit 

2 PM speciation was revised. Used in NFRM to give updated estimates of visibility 

benefits.

Input and output file-naming convention (different than for NPR):

CALPUFF and POSTUTIL file names have the format:

•XX_Cholla_SCEN_YYYY.inp or .lst

•XX = cf for CALPUFF, pu for POSTUTIL

•YYYY = 2001, 2002, or 2003

•SCEN = scenario, one of:

••ebase•Base case, LNB

••ectrl1•SCNR on u2,3,4

••ectrl2•SCR on u2,3,4

••ectrl2n•SCR on u2,3,4; no added SCR SO4

CALPOST file names have the format:

•ct_cholla_SCEN_VMETH_AREA_YYYY.inp or .lst

•VMETH = vm6a, vm6b, vm8a, m8b for MVISBK = 6 or 8,

••and natural background concentrations based on annual average or best 20% of days.

•AREA = 4-letter abbreviation for Class I area

Cholla_cpf.zipx•CALPUFF files

Cholla_putil.zipx•POSTUTIL files

Cholla_cpost.zipx•CALPOST files

Cholla_visx.zipx•CSV files extracted from CALPOST output

•text listings of *nocomp.zip within the above:

•Cholla_remodel_ziplist.txt

Cholla_NFR_remodeling.xls

•CALPUFF input calculations, and extracted visibility results

2006FinalDryBottomPC_FGD_FFpmSpeciationProfile_Cholla-Unit2-filtPM.xls

•new speciation for unit 2, using FGD+FF consistent with units 3 & 4

•(formerly had used scrubber-only speciation)

-------------------------------------------------------

"mrg23"

Remodeling of all NPR scenarios to see effect of merged stack.
Changes from NPR: merged stacks for units 2 & 3 (did *not* change H2SO4 or unit 1 

emissions). Used in NFRM only to state effect of merged stack.

Cholla_mrg23_cpf.zipx•CALPUFF files

Cholla_mrg23_putil.zipx•POSTUTIL files

Cholla_mrg23_cpost.zipx•CALPOST files

Cholla_mrg23_visx.zipx•CSV files extracted from CALPOST output

•text listings of *nocomp.zip within the above:

•Cholla_mrg23_ziplist.txt

Cholla_mrg23_visx_table.xls

•Excel spreadsheet with tables comparing NPR cases to those with merged stack

=======================================================

SRP Coronado

"base_p" case: LNB on both units 1 and 2.

For unit 1, NOx emission rate is 16.6 TPD from CAMD 2010-11-03 (same as NPR "base_rs" and 

"base_q"). For unit 2, it's a low-load LNB emission rate, meant to represent Consent 

Decree's "SCR" not operating at low loads; 6.842 tpd from CAMD 2012-04-01, in a low-load 

period identified by SRP. Used in NFRM only to compare "base_p" to "base_q" LNB on both 

units from the FIP Proposal to get benefit of unit 2 Consent Decree SCR.

Input and output file-naming convention is same as for NPR.

Coronado_NFRph1_cpf.zipx•CALPUFF files

Coronado_NFRph1_putil.zipx•POSTUTIL files

Coronado_NFRph1_cpost.zipx•CALPOST files

Coronado_NFRph1_visx.zipx•CSV files extracted from CALPOST output

•text listings of *nocomp.zip within the above:

•Coronado_NFRph1_ziplist.txt

Coronado_base_p_visx.xls

•Excel spreadsheet with tables comparing "base_p" to "base_q"; includes extracted CALPOST 

output