Science Inventory

"Peer Review: Nonroad (NR) Updates to Population Growth, Compression Ignition (CI) Criteria, Toxic Emission Factors and Speciation Profiles"

Citation:

"Peer Review: Nonroad (NR) Updates to Population Growth, Compression Ignition (CI) Criteria, Toxic Emission Factors and Speciation Profiles". U.S. Environmental Protection Agency, Washington, D.C.

Impact/Purpose:

MOVES-NONROAD model estimates nonroad emissions for specific states and counties for past and future years. These three reports together constitute an update to the Nonroad section of EPA’s MOVES201X tool/model. The peer review checks to see that the outcome of the update is based on valid assumptions and sound scientific judgements.

Description:

This report focuses on the methodology for estimating growth in NR engine populations as used in the MOVES201X-NONROAD emission inventory model. MOVES NR growth rates start with base year engine populations and estimate growth in the populations of NR engines, while applying constant annual activity values for every engine type in MOVES201X. Long term growth rates are addressed. The engine classifications and shares of NR populations are updated for Tier 4 CI engines as well as criteria emission rates for these engines. Finally, speciation values used to estimate organic aggregates (TOG, VOC), speciation profiles and toxic emission factors (PAH, metals, etc.) are updated for Tier 4 CI engines.

URLs/Downloads:

Exhaust and Crankcase Emission Factors for Nonroad Compression-Ignition Engines in MOVES2014b (EPA-420-18-009)   (PDF, 177 pp,  5949 KB,  about PDF)

Nonroad Engine Population Growth Estimates in MOVES2014b (EPA-420-18-010)   (PDF, 23 pp,  803 KB,  about PDF)

Speciation Profiles and Toxic Emission Factors for Nonroad Engines in MOVES2014b (EPA-420-R-18-011)   (PDF, 79 pp,  1856 KB,  about PDF)

Draft Report for Peer Review: Exhaust and Crankcase Emission Factors for Nonroad Engine Modeling Compression-Ignition in MOVES201X   (PDF, 177 pp,  1656 KB,  about PDF)

Draft Report for Peer Review: Nonroad Population Growth Estimates in MOVES201X   (PDF, 20 pp,  738 KB,  about PDF)

Draft Report for Peer Review: Speciation Profiles and Toxic Emission Factors for Nonroad Engines in MOVES201X   (PDF, 71 pp,  577 KB,  about PDF)

Nonroad Peer Review Final Report   (PDF, 3 pp,  461 KB,  about PDF)

Charge Letters to Peer Reviewers   (PDF, 10 pp,  156 KB,  about PDF)

R Sawyer Review Response   (PDF, 4 pp,  1089 KB,  about PDF)

P Lewis NR Review Response   (PDF, 3 pp,  361 KB,  about PDF)

R Sawyer Resume   (PDF, 2 pp,  124 KB,  about PDF)

P Lewis CV   (PDF, 19 pp,  609 KB,  about PDF)

R Sawyer No COI   (PDF, 1 pp,  137 KB,  about PDF)

P Lewis No COI   (PDF, 1 pp,  124 KB,  about PDF)

Record Details:

Record Type: DOCUMENT ( PUBLISHED REPORT/ REPORT)
Product Published Date: 03/30/2018
Record Last Revised: 12/29/2020
OMB Category: Other
Record ID: 339678