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## NMIM and MOVES Runs for RFS2 Air

Quality Modeling: Memorandum Harvey Michaels, OTAQ January 1 2 , 2010 1) The models and scripts used to run and process NMI M and MOVES for the RFS2 FRM air quality modeling have been docketed on a DVD entitled “NMI M and MOVES R uns for RFS2 Air Quality

Modeling: DVD . ” This memo describes the contents of the DVD and provides an overview of how these models were used to generate the onroad and nonroad downstream inventories. a) Memorandum (this document) i) Title: “NMIM and MOVES Runs f or RFS2 Air Quality

Modeling: Memorandum” ii) Filename: RFS2_NMIM_MOVES_AQM.pdf b) DVD i) Title: “NMIM and MOVES Runs for RFS2 Air Quality Modeling: DVD”, written on the phy sical DVD. ii) Volume Label: RFS2 NMI M MOVES AQM c) This memo is not on the DVD. 2) Contents of the DVD a) MOVES folder i) Batch Files_20090206 folder contains the batch files that execute the MOVES runs. Batch files are key

to understanding the MOVES run s , because they control the run s and specify

the location and use of all files. ii) HCSpeciation

_ new

_ Code fold er contains My SQL scripts that are part of the MOVES code. The batch files copy these scripts into the MOVES code as a way of making last minute corrections to the code. iii) MOVESGHGSource20080909 folder is the MOVES code. The batch files modify

the code by

c opying some My SQL scripts into it. This modification does not require recompilation. iv) RunSpecs folder contains the RunSpecs referenced in the batch files that control the MOVES runs. v) MOVESDB20080828 .zip contains the MOVES default database. vi) Input folder contains the user - supplied databases that are referenced in the RunSpecs and modify

the MOVES default database vii) Perl Scripts folder contains a few scripts used to process MOVES output. b) NMI M i) BatchFilesAndRunSpecs folder contains NM IM batch files and RunSpecs. Batch files are key

to understanding the NMIM runs, because they control the runs and specify the location and use of all files. ii) NMI M20071009 folder is the NMI M code . iii) NCD20080727 .zip is the zipped NMI M County Database iv) M6203CHC contains compiled MOBILE6 ex ecutable ( M6203ChcOxFixNMI M.exe ) and external datafiles that NMI M used to run MOBILE6.C: \

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temp_sessions \2320212590556 619641 \EPA - HQ - OAR - 2005 - 0161 - DRAFT - 2898.doc 2 v) NR05d - Bond - Final .zip is the version of the NONROAD Model used to generate these inventories. vi) Scripts folder contains Perl and M yS QL scripts that prepare, post - process, and generate diagnostics for the NMIM runs. c) ProcessingScripts folder contains the scripts that post - processed NMIM and MOVES output into the RFS2 FRM AQM Inventories. An annotated list of scripts is in rp.bat. 3) Description of the inventory production pro cess a) The MOVES runs produced emission factors at the state - month level for all onroad gasoline vehicles except motorcy cles. Onroad gasoline inventories were generated by multiplying MOVES emission factors by VMT developed for the Office of Air Quality Planning and Standards's 2002 Version 3 Modeling Platform 1 and used in the recently published L ocomotive - Marine Rule . 2 b) MOVES was used for onroad gasoline emission factors because of significant improvements compared with MOBILE6 . Because of difficult y with MOVES VMT allocation, MOVES was used as a emission factor model and NMIM VMT was applied at the state - month - SCC level. Because of performance limitations of MOVES , there was only time to run it at the state - month level. State inventories were allocated t o the county - month level based on NMI M’s MOBILE6 runs. Despite the limitations of these methods, it was EPA’s judgment that they provided superior inventories to MOBILE6. c) Both MOBILE6 and NONROAD were run using NMI M (version NM IM 20071009 ) with NMI M Count y Database NCD20080724 . NMIM supplied emissions from the NONROAD Model and from onroad sources not produced from MOVES. The MOBILE6 Model was M6203ChcOxFixNMI M , a special version that includes cold - start VOC and the cold - start controls of the Mobile Sourc e Air Toxics Rule that go into effect in 2011. The NONROAD Model version was NR05d - Bond - Final , which is the same as the publically

released version NONROAD2008. d) Onroad emissions generated at the state - month level from MOVES were distributed to the county - month level using the results from MOBILE6 as run by NMIM. e) For both NMIM and MOVES, temperatures and humidity were those of the air quality modeling base ye ar 2005, and fuels for each case were those developed for this rule. f) For the E IS A case, E10 and E85 inventories were weighted together at the state level based on the ene rgy

consumed by

these two fuels. g) Onroad gasoline PM was run by MOVES at 72F and adjusted by OAQPS at the grid - hour level based on temperature curves supplied b y OTAQ.. h) For some fuel - process combinations, there were MOVES bugs in calculating VOC from THC . For these cases, VOC was generated b y post - processing from THC using fuel specific algorithms developed by Rich Cook. For these cases, Rich also supplied fuel specific algorithms t o calculate the HAPs that MOVES calculates from VOC. 1 See http://www.epa.gov/ttn/chief/emch/index.html. 2 Final Rule: Control of Em issions of Air Pollution from Locomotives and Marine Compression - Ignition Engines Less Than 30 Liters per Cylinder (published May 6, 2008 and republished June 30, 2008). For d etails, see http://www.epa.gov/otaq/locomotives.htm#2008final