Common use of APPENDICES, LETTERS OF UNDERSTANDING AND INTERPRETATION Clause in Contracts

APPENDICES, LETTERS OF UNDERSTANDING AND INTERPRETATION. The following Appendices are attached hereto and form a part hereof: Appendix "A" – National Field Heat Treatment Agreement Appendix "B" – Atlantic Region Appendix "C" – Central Region Appendix "D" – Prairie Region Appendix "E" – Pacific Region Appendix "F – Pipeline Agreement Appendix "G"– Quebec Region The following Letters of Understanding form part of this agreement. Letter of Understanding 1 – National – Practical Mentoring Letter of Understanding 2 – National – Non-Voluntary ▇.▇.▇.▇. Letter of Interpretation A – Atlantic Region – Meals Letter of Interpretation B – Central Region – Meals Letter of Interpretation C – Prairie Region – Meals Letter of Understanding 4 – Pacific Region – Travel Enabling Clause The following Letters are attached hereto and form a part hereof: Letter of Interpretation – Central Region - LOA - Meals Letter of Interpretation – Prairie Region - LOA - Meals Negotiated at St. John’s, Halifax, Toronto, Montreal, Edmonton and Vancouver and subsequently ratified by all parties.

APPENDICES, LETTERS OF UNDERSTANDING AND INTERPRETATION. The following Appendices are attached hereto and form a part hereof: Appendix "A" – National Field Heat Treatment Agreement Appendix "B" – Atlantic Region Appendix "C" – Central Region Appendix "D" – Prairie Region Appendix "E" – Pacific Region Appendix "F – Pipeline Agreement Appendix "G"– Quebec Region The following Letters of Understanding form part of this agreement. Letter of Understanding 1 – National – Practical Mentoring Letter of Understanding 2 – National – Non-Voluntary ▇.▇.▇.▇. Letter of Interpretation A – Atlantic Region – Meals Letter of Interpretation B – Central Region – Meals Letter of Interpretation C – Prairie Region – Meals Letter of Understanding 4 – Pacific Region – Travel Enabling Clause The following Letters are attached hereto and form a part hereof: Letter of Interpretation – Central Region - LOA - Meals Letter of Interpretation – Prairie Region - LOA - Meals Negotiated at St. John’s, Halifax, Toronto, Montreal, Edmonton and Vancouver and subsequently ratified by all parties.