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To: BNSF Coal Customers
05/29/2009

Coal Dust Mitigation Requirements For Black Hills Subdivision Effective November 1, 2009

As advised in Marketing News on May 15, 2009, BNSF has imposed limits on the amount of coal dust that can be emitted from coal cars that traverse the Powder River Basin Joint Line. Effective November 1, 2009, BNSF will also impose coal dust limits for shipments along the Black Hills Subdivision in Wyoming.

As you may be aware, coal or coal dust that is emitted from coal cars during transit can have adverse effects on rail roadbeds, and thus overall rail operations. BNSF is imposing these limits in order to help mitigate its negative effects.

This rule has been added to BNSF Tariff 6041-B, Item 101, Coal Dust Mitigation Requirements:

“Shipper shall ensure that all cars loaded with coal from any mine origin that move over milepost 558.2 on the Black Hills Subdivision in Wyoming shall be profiled in accordance with BNSF’s published template entitled ”Redesigned Chute Diagram” located in Appendix A to this publication. The template may also be found on the BNSF website (www.bnsf.com) using the following tabs: Customer Tools, Equipment Information, Loading Diagrams, Coal.

Effective November 1, 2009, Shipper shall take all steps necessary to ensure that Trains handling cars loaded with Coal from any mine origin that move over the Black Hills Subdivision shall not emit more than an Integrated Dust Value (IDV.2) of 245 units in order to enhance retention of coal in rail cars. An IDV.2 unit is a measure of the volume of coal dust coming off of the coal train over its entire length. Profiling and any products or appurtenances shall be applied or installed in accord with manufacturer's recommendations, where appropriate.

Any product, device or appurtenance utilized by Shipper or Shipper’s mine agents to control the release of coal dust shall not adversely impact railroad employees, property, locomotives or owned rail cars.”

BNSF’s TrackSide Monitor (TSM) technology will measure the amount of dustfall and BNSF coal customers will be notified if their coal dust exceeds the amount designated in the tariff to help with prevention.

If you have any questions, please contact your BNSF Marketing Representative.

Your business is important to us. Thank you for choosing BNSF Railway as your transportation service provider.


If you have any questions, please send an email to Customer.Notifications@bnsf.com