Common use of Formation and Due Qualification of the Partnership Clause in Contracts

Formation and Due Qualification of the Partnership. The Partnership has been duly formed and is validly existing in good standing as a limited partnership under the Delaware Revised Uniform Limited Partnership Act (the “Delaware LP Act”) with full partnership power and authority to own or lease its properties and to conduct its business in all material respects as described in the Pricing Disclosure Package and the Prospectus. The Partnership is duly registered or qualified as a foreign limited partnership for the transaction of business under the laws of each jurisdiction in which the character of the business conducted by it or the nature or location of the properties owned or leased by it makes such registration or qualification necessary, except where the failure so to register or qualify would not, individually or in the aggregate, have a material adverse effect on the business, prospects, financial condition or results of operations of the MarkWest Entities, taken as a whole (“Material Adverse Effect”), or on the performance by the MarkWest Entities of their obligations under the Securities.