## TSD **- 1c** 

**Em ission Processing for the Revised 2002 OTC Regional and** 

**Urban 12 km Base Case Simulations**

Bureau of Air Quality

Analy sis and Research Division of Air Resources New York State Department of Environmental Conservation

September 19, 20062

1. Overview ................................ ................................ ................................ ......................... 4 2. Emission Inventories ................................ ................................ ................................ ....... 4 2.1 MANE - VU ................................ ................................ ................................ ................ 4 2.1.1 Area Sources ................................ ................................ ................................ ...... 4 2.1.2 Nonroad Sources ................................ ................................ ................................ 4 2.1.3 Mobile Sources ................................ ................................ ................................ .. 5 2.1.4 Point Sources ................................ ................................ ................................ ..... 5 2.2 CENRAP ................................ ................................ ................................ ................... 5 2.2.1 Area Sources ................................ ................................ ................................ ...... 5 2.2.2 Nonroad Sources ................................ ................................ ................................ 6 2.2.3 Mobile Sources ................................ ................................ ................................ .. 6 2.2.4 Point Sources ................................ ................................ ................................ ..... 6 2.3 VI STAS ................................ ................................ ................................ ..................... 6 2.3.1 Area Sources ................................ ................................ ................................ ...... 6 2.3.2 Nonroad Sources ................................ ................................ ................................ 7 2.3.3 Mobile Sources ................................ ................................ ................................ .. 7 2.3.4 Point Sources ................................ ................................ ................................ ..... 7 2.4 MRPO ................................ ................................ ................................ ....................... 7 2.4.1 Area Sources ................................ ................................ ................................ ...... 7 2.4.2 Nonroad Sources ................................ ................................ ................................ 8 2.4.3 Mobile Sources ................................ ................................ ................................ .. 8 2.4.4 Point Sources ................................ ................................ ................................ ..... 8 2.5 Canada ................................ ................................ ................................ ....................... 9 2.5.1 Area Sources ................................ ................................ ................................ ...... 9 2.5.2 Nonroad Sources ................................ ................................ ................................ 9 2.5.3 Mobile Sources ................................ ................................ ................................ .. 9 2.5.4 Point Sources ................................ ................................ ................................ ..... 9 3. Mobile6 Processing ................................ ................................ ................................ ....... 10 3.1 MANE - VU ................................ ................................ ................................ .............. 10 3.1.1 Mobile6 input files ................................ ................................ ........................... 10 3.1.2 SMOKE/Mobile6 auxiliary files ................................ ................................ ...... 10 3.1.3 Temperature averaging ................................ ................................ .................... 11 3. 2 CENRAP ................................ ................................ ................................ ................. 11 3.2.1 Mobile6 input files ................................ ................................ ........................... 11 3.2.2 SMOKE/Mobile6 auxiliary files ................................ ................................ ...... 11 3.2.3 Temperature averaging ................................ ................................ .................... 11 3.3 VI STAS ................................ ................................ ................................ ................... 12 3.3.1 Mobile6 input files ................................ ................................ ........................... 12 3.3.2 SMOKE/Mobile6 auxiliary files ................................ ................................ ...... 12 3.3.3 Temperature averaging ................................ ................................ .................... 12 3.4 MRPO ................................ ................................ ................................ ..................... 12 3.4.1 Mobile6 input files ................................ ................................ ........................... 12 3.4.2 SMOKE/Mobile6 auxiliary files ................................ ................................ ...... 12 3.4.3 Temperatur e averaging ................................ ................................ .................... 123

4. Biogenic Emission Processing ................................ ................................ ...................... 13 5. Temporal Allocation ................................ ................................ ................................ ..... 13 5.1 MANE - VU ................................ ................................ ................................ .............. 13 5.1.1 Area and nonroad sources ................................ ................................ ................ 13 5.1.2 Mobile sources ................................ ................................ ................................ . 13 5.1.3 Point Sources ................................ ................................ ................................ ... 13 5.2 CENRAP ................................ ................................ ................................ ................. 13 5.3 VI STAS ................................ ................................ ................................ ................... 14 5.4 MRPO ................................ ................................ ................................ ..................... 14 5.5 Canada ................................ ................................ ................................ ..................... 14 6. Speciation ................................ ................................ ................................ ...................... 15 7. Spatial Al location ................................ ................................ ................................ .......... 15 7.1 U.S. ................................ ................................ ................................ ......................... 15 7.2 Canada ................................ ................................ ................................ ..................... 154

**1. Overview**  All emissions processing for the revised 2002 O TC regional and urban 12 km base case simulations was performed with SMOKE2.1 compiled on a Red Hat 9.0 L inux operating s ys tem with the Portland group fortran compiler version 5.1. The emissions processing was performed on a month - by- month and RPO - by- RPO b asis, i.e. SMOKE processing was performed for each month for each of the RPOs (MANE - VU, VI STAS, CENRAP, MRPO) individually as well as for Canada. For each month/RPO combination, a separate SMOKE ASSIGNS file was created, and the length of the episode in each of these ASSI GNS files was set to the entire month. Also, as discussed in Section 3, there was no difference between “episode - average” temperatures and “monthl y- average” temperatures for the Mobile6 simulations that used the option of temperature averaging. This document is structured as follows: A listing of all emission inventories is given in Section 2, organized by RPO and source category . Section 3 discusses the Mobile6 processing approach emplo yed for the different RPOs, while Section 4 describes the processing of biogenic emissions with BEI S3.12. Finally , Sections 5 through7 describe the temporal allocation, speciation, and spatial allocation of the emissions inventories, respectivel y. **2. Emission Inventories**  2.1 MANE- VU Version 3 of the MANE_VU invento ry was utilized to generate CMAQ - ready emissions. This emissions inventory data were obtained from the MANEVU archive in April 2006. 2.1.1 Area Sources  Files: MANEVU_AREA_SMOKE_INPUT_ANNUAL_SUMMERDAY_040606.txt and MANEVU_AREA_SMOKE_INPUT_ANNUAL_WI NTERDAY_040606 .txt prepared b y PECHAN, downloaded from **ftp.marama.org** (username mane - vu, password exchange)  Fugitive dust correction: This was applied as county- specific correction factors for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; the correction factor file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password protected). ; this adjustment was performed using the SMOKE programs cntlmat and grwinven to generate an adjusted IDA inventory

file used for subsequent SMOKE processing 2.1.2 Nonroad Sources  File: MANEVU_NRD2002_SMOKE_030306 prepared by PECHAN; downloaded from **ftp.marama.org** (username mane - vu, password exchange)5

2.1.3 Mobile Sources  VMT/Speed: MANEVU_2002_mbinv_02022006_addCT.txt prepared by PECHAN and NESCAUM; downloaded from http://bronze.nescaum.org/P rivate/junghun/MANE VU/onroad_ver3_update/MANEVU_V3_update.tar 2.1.4 Point Sources  Files: MANEVU_Point_SMOKE_INPUT_ANNUAL_SUMMERDAY_041006.txt and MANEVU_Point_SMOKE_INPUT_ANNUAL_WI NTERDAY_041006.txt prepared b y PECHAN were downloaded from **ftp.marama.org** (username mane vu, password exchange)  Fugitive dust correction: This was applied as county- specific correction factors for SCC’s listed at http://www.epa .gov/ttn/chief/emch/invent/index.html#dust ; the correction factor file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password protected). ; this adjustment was p erformed using the SMOKE programs cntlmat and grwinven to generate an adjusted IDA inventory

file used for subsequent SMOKE processing  Corrected the omission of 2,100 tons/year VOC emissions from several point sources in NJ. NJDEP provided updated IDA file s on June 30 that were used for modeling. 2.2 CENRAP The inventory

data were obtained from the CENRAP ftp site in March 2006 and reflect version BaseB of the CENRAP inventory . 2.2.1 Area Sources  Files: o CENRAP_AREA_SMOKE_INPUT_ANN_STATES_081705.txt o CENRAP_AREA_MI SC_S MOKE_INPUT_ANN_STATE_071905.txt o CENRAP_AREA_BURNING_SMOKE_INPUT_ANN_TX_ NELI_071905.txt o CENRAP_AREA_MI SC_SMOKE_INPUT_NH3_MONTH_{MMM} _072805.txt where {MMM} is JAN, FEB, ... DEC o CENRAP_AREA_SMOKE_INPUT_NH3_MONTH_{MMM} _071905.txt where {MMM} is JAN, FEB, ... D EC  Fugitive dust correction: This was applied as county- specific correction factors for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; the correction facto r file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password protected). ; this adjustment was performed using the SMOKE programs cntlmat and grwinven to generat e an adjusted IDA inventory

file used for subsequent SMOKE processing  Note about area and nonroad source SMOKE processing for the CENRAP region: All area source inventories (both annual and month - specific) were processed in6 one step through SMOKE. SMK_AVED AY_YN was set to N, so seasonal profiles were used to apportion the annual inventories numbers b y month. This setting was also used for the nonroad processing performed in a separate step. This was necessary

since the month - specific files had zero in their ‘average - day ’ column and the annual total column reflects the “monthly emissions as annual totals” as per header line. Therefore, seasonal profiles are used to apportion both the annual and month - specific files. As described below, we utilized the temporal profiles and cross - reference files generated by CENRAP. However, we did not verify that this approach indeed leads to the intended monthly allocation of ammonia and nonroad emissions. 2.2.2 Nonroad Sources  Files: o CENRAP_NONROAD_SMOKE_INPUT_ANN_071305.txt o CENRAP_NONROAD_SMOKE_INPUT_MONTH_{MMM}_071305.txt where {MMM} is JAN, FEB, ... DEC 2.2.3 Mobile Sources  VMT/Speed files: o mbinv02_vmt_cenrap_ce.ida o mbinv02_vmt_cenrap_no.ida o mbinv02_vmt_cenrap_so.ida o mbinv02_vmt_cenrap_we.ida 2.2.4 Point Sources  File: CENRAP_POI

NT_SMOKE_INPUT_ANNUAL_DAILY_072505.txt  Fugitive dust correction: This was applied as county- specific correction factors for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#du st ; the correction factor file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password protected). ; this adjustment was performed using the SMOKE programs cntlmat and grwinven to generate an adjusted IDA inventory

file used for subsequent SMOKE processing. 2.3 VISTAS All VI STAS emission files were obtained from the Alpine Geophys ics ftp site. They reflect version BaseG of the VI STAS inventory with the exception of fi re emissions which reflect BaseF and BaseD. These files were downloaded between February and August, 2006. 2.3.1 Area Sources  Files:7 o arinv_vistas_2002g_2453922_w_pmfac.txt o ida_ar_fire_2002_vistaonly _basef.ida  Note: the header lines of these files indicate that the fugitive dust correction was already applied, so no further correction was performed. 2.3.2 Nonroad Sources  Files: o nrinv_vistas_2002g_2453908.txt o marinv_vistas_2002g_2453972.txt 2.3.3 Mobile Sources  VMT/Speed file: mbinv_vistas_02g_vmt_12jun06.txt 2.3.4 Point Sources  Fil es: o Annual:  egu_ptinv_vistas_2002typ_baseg_2453909.txt  negu_ptinv_vistas_2002ty p_baseg_2453909.txt  ptinv_fires_{MM}_ty p.vistas.ida where {MM} is 01, 02, 03, etc. depending on the month; these annual point fire files were generated as part of the VI STAS Bas eD inventory and were obtained in January

2005 o Hour- specific:  pthour_2002ty

p_baseg_{MMM}_28jun2006.ems where {MMM} is jan, feb, mar, etc.  pthour_fires_{MM}_ty p.vistas.ida where {MM} is 01, 02, 03, etc. depending on the month; these hourl y point fire files were generated as part of the VI STAS BaseD inventory and were obtained in January

2005  Note: No fugitive dust correction was performed for these files. 2.4 MRPO MRPO emissions for SMOKE modeling were generated b y Alpine Geophysics through a contract from MARAMA to convert the MRPO BaseK inventory from NIF to IDA format. The files were downloaded from the MARAMA ftp site **ftp.marama.org** (username mane - vu, password exchange) between April and June 2006. 2.4.1 Area Sources  Files: o Annual:  arinv_mar_mrpok_2002_27apr2006.txt  arinv_other_mrpok_2002_20jun2006.txt o Month - specific:8  arinv_nh3_2002_mrpok_{mmm}_3may2006.txt where {mmm} is jan, feb, etc.  dustinv_2002_mrpok_{mmm}_23may2006.txt where {mmm} is jan, feb, etc.  Fugitive dust correction : This correction was performed only to the arinv_other_mrpok_2002_20jun2006.txt file using county- specific correction factors for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; the correction factor file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password protected). ; this adjustment was performed using the SMO KE programs cntlmat and grwinven to generate an adjusted IDA inventory

file used for subsequent SMOKE processing.  Note about area source SMOKE processing: SMOKE processing was performed separately for the annual and month - specific files. For the annual inv entory processing, SMK_AVEDAY_YN was set to N, so seasonal profiles were used to apportion the annual inventories numbers b y month. For the month - specific inventory processing, this variable was set to Y so that no seasonal profiles would be applied and th e inventory numbers in the ‘average day ’ column would be used. To save a SMOKE processing step, the annual “marine” inventory “ arinv_mar_mrpok_2002_27apr2006.txt” was processed together with the annual “other area source” inventory “arinv_other_mrpok_2002_20jun2006.txt” even though it technically

is part of the nonroad inventory . 2.4.2 Nonroad Sources  Files: nrinv_2002_mrpok_{mmm}_3may2006.txt where {mmm} is jan, feb, etc. 2.4.3 Mobile Sources  VMT/Speed file: mbinv_mrpo_02f_vmt_02may06.txt 2.4.4 Point Sources  Files: ptinv_egu_negu_2002_mrpok_1may2006.txt  Fugitive dust correction: This correction was performed only to the arinv_other_mrpok_2002_20jun2006.txt file using county- specific correction factors for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; the correction factor file gcntl.xportfrac.txt was obtained from EPA’s CAIR NODA ftp site http://www.airmodelingftp.com (password p rotected). ; this adjustment was performed using the SMOKE programs cntlmat and grwinven to generate an adjusted IDA inventory

file used for subsequent SMOKE processing.9

2.5 Canada 2.5.1 Area Sources  File: AS2000_SMOKEready .txt obtained from ftp://ftp.epa.gov/EmisInventory /canada_2000inventory  Fugitive dust correction: We applied “divide - by- four” correction for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; this adjustment was performed outside SMOKE with in - house Fortran programs. No county/ province specific correction factors were available for Canada 2.5.2 Nonroad Sources  File: NONROAD2000_SMOKEready.txt obtained from ftp://ftp.epa.gov/EmisInventory /canada_2000inventory 2.5.3 Mobile Sources  File: MOBILE2000_SMOKEready.txt obtained from ftp://ftp.epa.gov/EmisInventory /canada_2000inventory  Fugitive dust correction: applied “divide - by- four” correction for SCC’s listed at http://www.epa.gov/ttn/chief/emch/invent/index.html#dust ; this adjustment was performed outside of SMOKE with in - house Fortran programs. No county /province - specific correction factors were available for Canada. 2.5.4 Point Sources There has long been difficulty in obtaining an up - to - date Canadi an criteria emissions inventory

for point sources. This is due largel y to confidentiality rights afforded to Canadian facilities. Thus far, the most recent inventory of Canadian point sources is rooted in the 1985 NAPAP data and is close to two decades old . Because there are a number of high emitting industrial facilities in southern Canada it is of particular importance to have a reasonably accurate inventory

of these sources especially when modeling air quality

over the Northeast and Midwest United State s. Toward this end, an effort was made to obtain more recent Canadian point source data and incorporate it into an inventory

database, which could then be used for the 2002 OTC air quality modeling. Perhaps the most accurate and publicl y accessible sourc e of Canadian pollutant data is now available from the National Pollutant Release Inventory (NPRI) database. This database contains 268 substances. Facilities that manufacture, process or otherwise use one of these substances and that meet reporting thres holds are required to report these emissions to Environment Canada on an annual basis. The NPRIdata are available at Environment Canada’s website and can be found at the link http://www.ec.gc.ca

/pdb/npri/npri_home_e.cfm . The page hosts an on - line search engine where one can locate emissions by pollutant or location. In addition, the entire database is available for download as an MS Access or Excel file. The NPRI database contains10

numerous pages with a rather comprehensive list of information. Detailed information is available about each facility , including location, activity and annual emissions. In addition, facilities having stacks with a height of 50 meters or more are required to report sta ck parameters. Unfortunatel y, one of the limitations of the NPRIdatabase for modeling purposes is that the data are only

available at the facility

level. Emissions models require process level information, so in order to use this data, a few generalizations had to be made. Each facility has a Standard In dustrial Classification (SIC) code associated with it; however, emissions models require Source Classification Codes (SCC’s). SCC’s are of critical importance as the emissions models use these codes for assignment of temporal and speciation profiles. SIC codes describe the general activity of a facility

while SCC codes describe specific processes taking place at each facility . While no direct relationship exists between these two codes, a general albeit s ubjective association can be made. For the purposes of creating a model - ready inventory file it was necessary to obtain the whole NPRIdatabase. After merging all the necessary components from the NPRI database required in the SMOKE inventory file, the SI C code from each facility was examined and assigned an SCC code. In most cases, only a SCC3 level code was assigned with confidence. While this is admittedly a less than desirable process, it does allow for the use of the most recent emissions from the NPRIdatabase to be used in modeling. Furthermore, having some level of SCC associated with these emissions will ensure that they

will be assigned a temporal and speciation profile by the model, other than the default. Once the model - ready inventory file w as developed, it was processed through SMOKE. **3. Mobile6 Processing**  3.1 MANE- VU 3.1.1 Mobile6 input files  Month - specific input files were prepared b y PECHAN and NESCAUM and were downloaded from http://bronze.nescaum.org/Private/junghun/MANE VU/onroad_ver3_update/MANEVU_V3_update.tar  Added the line “REBUILD EFFECTS :0.10” to each file before the SCENARI O record to override the Mobile6 default setting of 0.9 (90%) for the “chip reflash” effectiveness 3.1.2 SMOKE/Mobile6 auxiliary files  SMOKE/Mobile6 auxiliary files were prepared by PECHAN and NESCAUM and were downloaded from http://bronze.nescaum.org/Private/junghun/MANE VU/onroad_ver3_update/MANEVU_V3_update.tar11

3.1.3 Temperature averaging  Following the setting in the MANEVU_2002_mvref.txt files, the following procedures were use d by

SMOKE for temporal and spatial temperature averaging in the calculation of emission factors: o Spatial averaging: temperatures were averaged over all counties that share a common reference county (i.e. Mobile6 input file) o Temporal averaging for May

– September emissions processing: no temporal averaging was used, i.e. day- specific temperatures were used to calculate emission factors for each day . o Temporal averaging for non - summer- months emissions processing: Temporal averaging over the duration of the ep isode (i.e. the entire month, see introduction) was used, i.e. monthly average temperatures were used to calculate the emission factors. 3.2 CENRAP 3.2.1 Mobile6 input files  Mobile6 input files for the CENRAP region for January and July were contained in the files c entral_M6_{MMM}.zip, north_M6_{MMM}.zip, south_M6_{MMM}.zip, west_M6_{MMM}.zip where {MMM} is either jan or jul. July input files were used for April

– September processing, while January input files were used for the remaining months  All files were downlo aded from the CENRAP ftp site in March 2006. 3.2.2 SMOKE/Mobile6 auxiliary files  SMOKE/Mobile6 auxiliary files were contained in the files central_M6_RD.zip, north_M6_RD.zip, south_M6_RD.zip, and west_M6_RD.zip. The SMOKE MCREF, MVREF, and MCODES files were cont ained in the file MOBILESMOKE_ Inputs.zip. The MCREF and MVREF files were combined for the different regions (“central”, “east”, “west”, “north”)  All files were downloaded from the CENRAP ftp site in March 2006. 3.2.3 Temperature averaging  The following procedure s were used b y SMOKE for temporal and spatial temperature averaging in the calculation of emission factors according to the setting in the mvref files: o Spatial averaging: no spatial averaging of temperatures, i.e. the temperatures for the reference county is used to calculate emission factors for all counties that share this reference county (i.e. Mobile6 input file) o Temporal averaging: Temporal averaging over the duration of the episode (i.e. the entire month, see introduction) was used, i.e. monthly avera ge temperatures were used to calculate the emission factors.12

3.3 VISTAS 3.3.1 Mobile6 input files  Month - specific Mobile6 input files were obtained from the Alpine Geophys ics ftp site in July

2006. They

reflect version BaseG of the VISTAS inventory . 3.3.2 SMOKE/Mobile6 aux iliary files  SMOKE/Mobile6 auxiliary files utilized were obtained from the Alpine Geophys ics ftp site in July 2006. They

reflect version BaseG of the VISTAS inventory . 3.3.3 Temperature averaging  The following procedures were used b y SMOKE for the temporal and spatial temperature averaging in the calculation of emission factors according to the setting in the mvref_baseg.36k.ag.txt file: o Spatial averaging: temperatures averaged over all counties that share a common reference county (i.e. Mobile6 input file) o Temporal averaging: Temporal averaging over the duration of the episode (i.e. the entire month, see introduction) was used, i.e. monthly average temperatures were used to calculate the emission factors. 3.4 MRPO 3.4.1 Mobile6 input files  Month - specific Mobile6 input fi les for SMOKE modeling were generated by Alpine Geophys ics through a contract from MARAMA. They are based on version BaseK of the MRPO inventory . The files were downloaded from the MARAMA ftp site **ftp.marama.org** (username mane - vu, password exchange) in May 2006. 3.4.2 SMOKE/Mobile6 auxiliary files  SMOKE/Mobile6 auxiliary files for SMOKE modeling were generated by Alpine Geophys ics through a contract from MARAMA. They are based on version BaseK of the MRPO inventory . The files were downloaded from the MARAMA ftp site **ftp.marama.org** (username mane - vu, password exchange) in May 2006. 3.4.3 Temperature averaging  The following procedures were used b y SMOKE for the temporal and spatial temperature ave raging in the calculation of emission factors according to the setting in the mvreg_mrpo_basek.txt file: o Spatial averaging: temperatures averaged over all counties that share a common reference county (i.e. Mobile6 input file)13 o Temporal averaging: Temporal averaging over the duration of the episode (i.e. the entire month, see introduction) was used, i.e. monthly average temperatures were used to calculate the emission factors. **4. Biogenic Emission Processing**  Hourly gridded biogenic emissions for the 12 km and 3 6 km modeling domains were calculated b y BE IS 3.12 through SMOKE, using MCIP - processed MM5 fields for temperature (“TA”, layer - 1 temperature), solar radiation (“RGRND”), surface pressure (“PRES”), and precipitation (“RN” and “RC”). A ‘seasonal switch’ file was generated b y the SMOKE utility

metscan to determine whether winter or summer emission factors should be used for any gi ven grid cell on any given day . Winter emission factors are used from January

1 st through the date of the last frost and again from the data of the first frost in fall through December 31 st . Summer emission factors are used for the time period in between. This calculation is performed separatel y for each grid cell. **5. Temporal Allocation**  5.1 MANE- VU 5.1.1 Area and nonroad sources  Generated as part o f the MANE - VU version 1 inventory  amptpro.m3.us+can.manevu.030205.txt  amptref.m3.manevu.012405.txt  downloaded from **ftp.marama.org** (username mane - vu, password exchange) in January 2005 5.1.2 Mobile sources  MANEVU_2002_mtpro_02 022006_addCT.txt  MANEVU_2002_mtref_02022006_addCT.txt  prepared b y PECHAN and NESCAUM and downloaded from http://bronze.nescaum.org/Private/junghun/MANE VU/onroad_ver3_update/MANEVU_V3_update.tar 5.1.3 Point Sources  Based on the same files as for the MANE - VU are a and nonroad temporal files listed above, but added the CEM - based 2002 state - specific temporal profiles and cross - references for EGU sources for the MANE - VU states that were generated by VI STAS for their BaseD modeling and obtained in February 2005.  No CE M - based hour - specific EGU emissions were utilized 5.2 CENRAP The following temporal profiles and cross - reference files were used:14

 Area and nonroad sources: o amptpro.m3.us+can.cenrap.010605_incl_nrd.txt o amptref.m3.cenrap.010605_add_nh3_and_nrd.txt  Mobile sources : o mtpro.cenrap.v3.txt o mtref.cenrap.v3.txt  Point sources: o ptpro.{QQ}.cenrap_egus_cem.00 - 03avg.121205.txt where {QQ} is Q1 for January /February /March, Q2 for April/May /June, etc. o ptref.{QQ}.cenrap_egus_cem.00 - 03avg.121205.txt where {QQ} is Q1 for January /Feb ruary /March, Q2 for April/May /June, etc.  All files were downloaded from the CENRAP ftp site in March 2006. 5.3 VISTAS The following month - specific temporal profiles and cross - reference files were used:  Area and nonroad sources: o atpro_vistas_basef_15jul05.txt o atref_vistas_basef_15jul05.txt  Mobile sources: o mtpro_vistas_basef_04jul05.txt o mtref_us_can_vistas_basef_04jul05.txt  Point sources: o ptpro_ty

p_{MMM}_vistasg_28jun2006.txt where {MMM} is jan, feb, mar, etc. o ptref_typ_vistas_baseg_28jun2006.txt  These files were obtained from the Alpine Geophy sics ftp site. They reflect version BaseG of the VISTAS inventory for the point source allocation files and version BaseF for the area, nonroad, and mobile source allocation files. These files were downloaded between February and July, 2006. 5.4 MRPO The following month - specific temporal profiles and cross - reference files were used for all source categories:  amptpro_ty

p_us_can_{MMM}_vistas_27nov04.txt where {MMM} is jan, feb, mar, etc.  amptref_2002_us_can_vistas_17dec04.txt  Thes e files were obtained from VISTAS in January 2005 and reflect their BaseD modeling. No updated temporal profiles or cross - reference files were developed for use with the MRPO BaseK inventory . 5.5 Canada For Canada, the SMOKE2.1 default temporal profiles and c ross - reference files (amptpro.m3.us+can.txt and amptref.m3.us+can.txt) were utilized.15

**6. Speciation**  The same speciation profiles (gspro.cmaq.cb4p25.txt) and cross - references (gsref.cmaq.cb4p25.txt) were utilized for all regions and all source categories. Dif ferent versions of these files were obtained (SMOKE2.1 default, EPA - CAIR modeling, VI STAS, CENRAP and MANE - VU) and compared. After comparing the creation dates and header lines of these files, it was determined that the EPA - CAIR and MANE - VU files had the m ost recent updates, and consequently the final speciation profile and cross reference files used for all regions and source categories was based on the EPA - CAIR files with the addition of MANE - VU specific updates. **7. Spatial Allocation**  7.1 U.S. The spatial surrog ates for the 12 km domain were extracted from the national grid 12 km U.S. gridding surrogates posted at EPA’s website at http://www.epa.gov/ttn/chief/emch/spatial/newsurrogate.html The gridding cross - references were also obtained from this website, but for the processing of MANE - VU area source emissions, MANE - VU specific cross - reference entries posted on the MARAMA ftp site were added. 7.2 Canada The spatial surrogates for Canadian emissions for the 12 km domain were extracted from the national grid 12 km Canadian gridding surrogates posted at EPA’s website at http://www.epa.gov/ttn/chief/emch/spatial/newsurrogate.html The gridding cross - references were also obtained from this website.