### Methodology **Used for MOVES Runspec**

The discussion below identifies the inputs and setting s used by the Shelby

C ounty Health Department

– Pollution Control Section (SCHD - PCS) in the Run Specification file (s) (Runspec) to define the MOVES runs that were performed. Description

– provides descriptive details to help remember the purpose of the run and distinguish the output Run S pec ification file(s) . Scale

– county

l evel was selected as the domain and the emission inventory method was chosen for the calculation ty

pe. Time Spans

– inputs and setting s were selected, as follows:  T ime Aggregation L evel input

– ‘Hour’ was selected . This was done in accordance with EPA guidance for the preferred aggregation level for SIP and/or conformity runs .  Years input

– two MOVES runs were performed . 2006 was used as the ye ar input in the first MOVES run and 2021 w as used in the second run .  Months input

– July w as selected as the month that best represent s summer ozone conditions .  Days input

– weekdays were selected for the representative day typ e as they

are considered to be the worst - case type when compared to weekends .  Hours input

– al l hours of the day were included to represent the 24 - hour day . Geographic Bounds

– Shelby County, Tennessee was selected a s the geographic boundary . Vehicles/Equipment

– all representative fuel and vehicle ty pes within the transportation network were selected from this input catego ry , which featured 13 different vehicle classes (referred to as source use ty

pes) and different fuel ty pes. Due to the lack of compressed natural gas and liquefied petroleum gas vehicles in the population, this analysis incorporate s diesel and gas fuel ty pes only . This anal ys is also allow s for default fuel formulation and fuel supply inform ation to be used in the study

area. With the exception of diesel -powered motorcycles, gas oline -powered combination long - haul trucks, and gas oline -powered intercity buses (which were removed because they

are not represented in the vehicle population) , all p ossible vehicle and fuel ty pes were considered. Road Ty pe – all five roadway ty pes , which include off

- network, rural restricted access, rural unrestricted access, urban restricted access, and urban unrestricted access, were considered. Notably, the o ff

- network is intended to account for vehicle starts and evaporative emissions f rom parked vehicles. While these emissions are not captured through the information in the regional travel demand models, default values can be used to assess their impacts. P ollutants and Processes

– Oxides of Nitrogen (NOx), Volatile Organic Compounds (VOC s ), Non - Methane Hydrocarbons (NMHC s ), and Total Gaseous Hydrocarbons (THC s ) are selected because the purpose of th e MOVES runs i s to assess emissions relating to 8 - hour ozon e formation. Note, all pertinent processes associated with ozone formation are selected, however,vapor and spillage loss are not include d as they are traditionally d eveloped as part of the area source emissions inventory . Miscellaneous Strategies

– N o information was entered for this section. Output

– To assist with post -processing aggregation , source use ty pe information was included with the output . Inaddition, e ach of the MOVES runs create s output databases that include U.S tons, million btu ’ s , and miles as the units of measure . The table below summarizes the settings used in th e MOVES run specification file. Table

– MOVES Runspec Parameters **MOVES Runspec Parameter Settings**  MOVES2010b Version 2012/04/10 Description provided descriptive details to help remember the purpose of the run and distinguish the output Run Specification file(s). Scale Domain/ Scale = County and Calculation T ype = Inventory Time Span Time A ggregation Level = Hour two MOVES runs were performed and input was selected as follows: 1) Years = 2006 2) Years = 2021 Months = One month (July) was selected to represent summertime ozone conditions Hours = All hours of the day selected Days = Selected Weekdays only Geographic Bounds 1 custom domain

– Shelby County , Tennessee Vehicles/Equipment All valid source types, gasoline and diesel Road Type All road types including off -network Pollutants and Processes NOx, VOCs, total gaseous hydrocarbons, and non - methane hydrocarbons General Output Units = U.S. tons, million btu , and miles Output Emissions Time = hour, location = link, on -road emissions by road type and source use type Advanced Performance None