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Marine Workgroup

Collaborative Wiki Main Page

Inventory Collaborative Google Drive Link


Co-leads: Mark Janssen -LADCO

Michael Aldridge - EPA OTAQ

Marine Committee Meetings

Third Tuesday of the month at 3:00 PM Eastern. Upcoming calls:

Tue, Aug 21, 2018 2:00 PM - 4:00 PM CDT

Tue, Sep 18, 2018 2:00 PM - 4:00 PM CDT

Tue, Oct 16, 2018 2:00 PM - 4:00 PM CDT

Tue, Nov 20, 2018 2:00 PM - 4:00 PM CST

Tue, Dec 18, 2018 2:00 PM - 4:00 PM CST

Tue, Jan 15, 2019 2:00 PM - 4:00 PM CST



Current Membership List can be found at:



Call June 19th.

Status ifof OTAQ work on 2017 Class 3 Marine (Power Model and AIS Processing)

Work is proceeding well with OTAQ on the development of 3 primary tools. Michael Aldridge did a presentation on the Marine Power model EPA is currently working on. The tool is a R based package with functions to calculate power demand given a complex set of inputs. The primary input is vessel speed from AIS data as well as a number of other vessel specific characteristics. Aditional work is coming to build an emissions calculation model based off the results of the power model. Finally, EPA continues work on R based tools to process AIS data for use in the model.

OTAQ is building these tools primarily as tools for Category 3 Vessels(large mostly ocean going). The committee will work to adapt these tools for Category 1 and 2 vessels which are critical for port operations and operations on the Great Lakes and Rivers.

Discussion of EPA-OAQPS 2017 inventory development

Laurel Drive described project EPA has to develop 2017 NEI inventories for Category 2/3 vessels. The group expressed their hope that EPA would work with the committee to build these inventories.

Julie McDill joined the call and discussed MARAMA's concern that Marine is an important source in the northeast. They would like to see the group work on cargo handling equipment at ports in addition to the purely marine components currently planned. The group may undertake these sources after the primary goals have been reached.

First Call December 14th.
Second Call tuesday January 9th. =====
  • Discussion of Workgroup goals
  • Overview of past projects of committee members.

Second Call Wednesday February 7th 2018

  • Presentation by EPA of EPA marine emissions estimate tool.

  • Draft estimates late 2018, Final Model 2020.

Next call February 20th.

  • ENERCON review of LADCO Great Lakes Methodology.
  • Deep Dive into ENERCON Access database.

Action Items