Included in the DTE transaction was approximately 88,000 net acres in the Fort Worth Basin of Texas, primarily in Jack County, offsetting ARP’s current Barnett Shale position. This acreage position includes approximately 75,000 net acres prospective for the oil and NGL rich Marble Falls play, in which there are approximately 700 identified vertical drilling locations in ARP’s position. ARP also believes that there are further potential development opportunities through vertical down-spacing and horizontal drilling in the Marble Falls formation. ARP commenced initial drilling operations in the Marble Falls play in January 2013.Atlas Resources’ Issuance of $275 million 7.75% 2021 Senior Notes On January 23, 2013, ARP issued $275 million of 7.75% Senior Notes due 2021 in a private placement transaction issued at par. ARP received net proceeds of $268.3 million after underwriting commissions and other transaction costs, and utilized the proceeds to repay and terminate ARP’s $75.4 million term loan and reduce the outstanding balance on its revolving credit facility. The senior notes are subject to a registration rights agreement entered in connection with the transaction, which requires ARP, among other things, to file a registration statement with the SEC and exchange the privately placed notes for registered notes by certain dates. Atlas Pipeline’s Acquisition of Cardinal Midstream In December 2012, APL acquired 100% of the equity interests held by Cardinal Midstream, LLC (“Cardinal”) in its three wholly-owned subsidiaries for approximately $600.0 million in cash, subject to customary purchase price adjustments. The assets of these companies represent the majority of the operating assets of Cardinal and include the following owned and/or operated assets: three cryogenic processing plants totaling 220 million cubic feet of natural gas per day (MMcfd) in processing capacity, approximately 60 miles of associated gathering pipelines, and a gas treating business that includes 15 treating facilities located in numerous hydrocarbon basins. Over 80% of Cardinal's current gross margin is derived from fixed fee contracts.