This Agreement may be amended only by a written agreement executed by the General Partner and the Service Provider, except that the Committee may unilaterally waive any conditions or rights under, amend any terms of, or alter this Agreement provided no such change (other than pursuant to Section 7(b), 7(c), 7(d), 7(e), or 7(g) of the Plan) materially reduces the rights or benefits of the Service Provider with respect to the Phantom Units without his consent.