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:

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

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

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

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

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

Nonroad Peer Review Final Report   (PDF,10 pp, 461 KB,  about PDF)

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

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

Exhaust & Crankcase EF for NRCI Engines MOVES2014b EPA420R18009

Nonroad Engine Growth Estimates in MOVES2014b EPA420R18010

Speciation Profiles & Toxic EF NR Engine MOVES2014b EPA420R18011

Record Details:

Record Type: DOCUMENT (PUBLISHED REPORT/REPORT)
Product Published Date: 03/30/2018
Record Last Revised: 09/21/2018
OMB Category: Other
Record ID: 339678

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF AIR AND RADIATION

OFFICE OF TRANSPORTATION AND AIR QUALITY

ASSESSMENT AND STANDARDS DIVISION

AIR QUALITY AND MODELING CENTER