Actual carbon emissions may vary from the results provided here as a result of variable factors such as weather, shipment characteristics, topography, etc. This carbon emission estimator was created to illustrate the estimated environmental benefit that is obtained by barging as part of your supply chain.

These carbon estimations rely on data sources based on Ingram shipment history and internal shipping metrics, along with assumptions for route mileage calculation, rail and trucking industry averages for fuel efficiency and greenhouse gas emissions, and other data sources such as the Texas Transportation Institute "A Modal Comparison of Domestic Freight Transportation Effects on the General Public: 2001-2009", February 2012, as prepared for National Waterways Foundation.

The unit is tons of CO2. The EPA measures emissions in grams per ton mile. The EPA calculated Ingram's grams/ton mile based on our statistics, and that number is multiplied by tons in the barge and miles traveled and converted to tons to figure out our tons of CO2.