M E M O R A N D U M 

To: File 

From: Idalia Pérez, EPA Region IX, Air Rulemaking Office

Date: July 22, 2013

Concerning: EPA Proposed Rule to Approve San Joaquin Valley Contingency Measure SIP 

Revision, Fine Particulate Matter (PM2.5) 

The 2013 Annual Demonstration Report and associated electronic Data Sheet1include the data 

needed to calculate projected emission reductions from incentive funds in 2015. In order to 

determine the projected emission reductions from On-Road Vehicle Replacement projects 

funded by Proposition 1B: Goods Movement Emission Reduction Program2and Off-Road 

Vehicle Replacement projects funded by the Carl Moyer Program,3 we analyzed the Data Sheet 

provided by the District as follows. 

From the Data sheet, we identified projects in these two categories that have a “Project Life” that 

ends on or after January 1, 2016 and thus will be active and achieving reductions through at least 

the end of 2015.

There are 1243 Prop 1B and 675 Moyer projects that fit this criterion.

4 We identified each of 

these projects by its unique “Project Identification” code, as well as the necessary information to 

determine its tons per day of emission reductions. See “Prop 1B - On-Road Vehicle Replacement 

projects achieving emission reductions through 2015.pdf” and “Carl Moyer Program - Off-Road 

Vehicle Replacement projects achieving emission reductions through 2015.pdf”. For each of the 

identified projects, we determined the “Project Life” in days by multiplying the given “Project 

Life” in years by 365. We divided the “NOx Lifetime Reduced Adjusted Percent Operation 

(tons)” and the “PM Lifetime Reduced Adjusted Percent Operation (tons)” presented in the Data 

Sheet for each project by its calculated “Project Life” in days to determine the tons per day of 

NOx and PM emissions reduced, respectively, for each project. Finally, we added the tons per 

day reduction of NOx and PM for every project in the two project categories mentioned above.

Based on these calculations, we determined that the projected 2015 emission reductions obtained 

from Prop 1B On-Road Truck replacements are 3.78 tpd of NOx and 0.15 tpd of PM, and the 

projected 2015 emission reductions obtained from Moyer Off-Road Vehicle Replacement are

 

1

http://www.valleyair.org/MOP/docs/069610ProjectDataforPublicUNLOCKED.xlsx

2

In the Data Sheet, these projects are categorized as: Component: On-Road Prop 1B; Component Option: Vehicle 

Replacement and Vehicle Replacement 2 for 1; Applicable Guideline: Prop 1B 2008 and Prop 1B 2010.

3

In the Data Sheet, these projects are categorized as: Component: Off-Road; Component Option: Vehicle 

Replacement; Applicable Guideline: Carl Moyer 2011.

4 Of the 1243 identified Prop 1B projects, 849 have a “Project Life” ending after December 31, 2016 and will 

therefore continue to achieve emission reductions through at least the end of 2016. All of the 675 identified Carl 

Moyer Projects have a “Project Life” ending on or after January 1, 2021 and will therefore continue to achieve 

emission reductions through at least the end of 2020. See “Prop 1B - On-Road Vehicle Replacement projects 

achieving emission reductions through 2015.pdf” and “Carl Moyer Program - Off-Road Vehicle Replacement 

projects achieving emission reductions through 2015.pdf.”
1.23 tpd of NOx and 0.06 tpd of PM. We carried out this same calculation for the Prop 1B 

projects that have a “Project Life” ending after December 31, 2016 and identified 853 such 

projects which, collectively, are projected to achieve 2.35 tpd of NOx reductions and 0.09 tpd of 

PM reductions in 2016. Below we include a sample calculation. 

Sample Calculation

Project Identification: P-0541

Component: On-Road Prop 1B

Component Option: Vehicle Replacement

Project Life (years): 5

Applicable Guideline: Prop 1B 2008

NOx Lifetime Reduced Adjusted Percent Operation (tons): 4.62

PM Lifetime Reduced Adjusted Percent Operation (tons): 0.28

Sample Calculation of Project Life in days

Project Life (days) x 365 (days/year) 

5 (years) x 365 (days/year) = 1825 days

Sample Calculation of NOx Emission Reductions in tons per day

NOx Lifetime Reduced Adjusted Percent Operation (tons) / Lifetime (days)

4.62 (tons) / 1825 (days) = 2.53 x 10-3tpd

Sample Calculation of PM Emission Reductions in tons per day

PM Lifetime Reduced Adjusted Percent Operation (tons) / Lifetime (days)

0.28 (tons) / 1825 (days) = 1.54 x 10-4tpd