Letter from the Tribunal to the Parties encl. Procedural Order No. 10

AG 347051 15 April 2021 DIRECT DIAL: +31 70 302 4153 E-MAIL: CTHAM@PCA-CPA.ORG

RE: PCA CASE Nº 2018-54 – TENNANT ENERGY, LLC V. GOVERNMENT OF CANADA

Dear Mesdames, dear Sirs,

I write on behalf of the Tribunal in the above-referenced matter.

The Tribunal notes that, in accordance with Sectio n 11 of Procedural Order No. 1 and the guidelines set forth in the Statement of the NAFTA Free Trade Commission on Non -Disputing Party Participation, sufficient time in the procedural calendar must be allocated for any amicus curiae applications and submissions to be made, responded to, and decided upon.

Accordingly, please find enclosed Procedural Order No. 10 issued by the Tribunal today, which sets out in its Annex I the revised procedural calendar for the bifurcated jurisdictional phase.

To ensure that any amici curiae have access to the public version of the Parties’ submissions on jurisdiction sufficiently in advance of the deadline for their own applications and submissions, the Parties are invited to confer and propose an alternative timetable under the Confidentiality Order in respect of the publication of the Rejoinder Memorial on Jurisdiction, so that the public version thereof could be made available within two months of its submission (i.e. by 26 July 2021). The Parties are requested to revert to the Tribunal with their joint proposed alternative timetable or, in the event of any disagreement, their respective proposed alternative timetables, by Monday, 26 April 2021. Mr Barry Appleton Appleton & Associates International Lawyers LP 121 Richmond St. W, Suite 304 Toronto, ON M5H 1K5 Canada Mr Edward Mullins Reed Smith LLP 1001 Brickell Bay Drive, 9th Floor Miami, FL 33131 United States of America

BY E-MAIL: TENNANTCLAIMANT @APPLETONLAW.COM BAPPLETON@APPLETONLAW.COM EMULLINS @REEDSMITH.COM

Ms Heather Squires, Lead Counsel Ms Annie Ouellet, Counsel Ms Alexandra Dosman, Counsel Mr Mark Klaver, Counsel Ms Maria Cristina Harris, Counsel Ms Darian Bakelaar, Paralegal Mr Benjamin Tait, Paralegal Ms Krystal Girvan, Paralegal Trade Law Bureau (JLT) Global Affairs Canada 125 Sussex Drive Ottawa, Ontario K1A 0G2 Canada

BY E-MAIL: HEATHER.SQUIRES@INTERNATIONAL.GC.CA ANNIE.OUELLET@INTERNATIONAL.GC.CA ALEXANDRA.DOSMAN@INTERNATIONAL.GC.CA MARK .KLAVER@INTERNATIONAL.GC.CA MARIACRISTINA.HARRIS@INTERNATIONAL.GC.CA DARIAN.BAKELAAR@INTERNATIONAL.GC.CA BEN JAMIN .TAIT@INTERNATIONAL.GC.CA KRYSTAL.GIRVAN@INTERNATIONAL.GC.CA

AG 347051 15 April 2021 Page 2 of 2 Should you have any questions regarding this letter, please do not hesitate to contact me at the details set forth above.

Yours sincerely,

Christel Y. Tham Legal Counsel Encl.: Procedural Order No. 10 dated 1 5 April 2021

cc: Mr Cavinder Bull SC (by e-mail: cavinder.bull@drewnapier.com) Mr R. Doak Bishop (by e-mail: dbishop@kslaw.com) Sir Daniel Bethlehem QC (by e-mail: dbethlehem@twentyessex.com)