Common use of Federal Income Tax Purposes Clause in Contracts

Federal Income Tax Purposes. Reference is hereby made to the Second Lien Credit Agreement dated as of October 19, 2012 (as the same may be amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Agreement”), among DGK ORRI Holdings, LP (“Borrower”), the lenders party thereto from time to time (the “Lenders”), and Xxxxx Fargo Energy Capital, Inc., as Administrative Agent and Collateral Agent. Pursuant to the provisions of Section 3.01 of the Agreement, the undersigned hereby certifies that (i) it is the sole record owner of the participation in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members is a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iv) none of its direct or indirect partners/members is a ten percent shareholder of Borrower within the meaning of Section 871(h)(3)(B) of the Code and (v) none of its direct or indirect partners/members is a controlled foreign corporation related to Borrower as described in Section 881(c)(3)(C) of the Code. The undersigned has furnished its participating Lender with IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemption. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. Unless otherwise defined herein, terms defined in the Agreement and used herein shall have the meanings given to them in the Agreement. [NAME OF PARTICIPANT] By: Name: Title: Date: , 20[ ] EXHIBIT G-4 FORM OF U.S. TAX CERTIFICATE (FOR FOREIGN LENDERS THAT ARE

Federal Income Tax Purposes. Reference is hereby made to the Second Lien Credit Agreement dated as of October 19, 2012 (as the same may be amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Agreement”), among DGK ORRI Holdings, LP (“Borrower”), the lenders party thereto from time to time (the “Lenders”), and Xxxxx Fargo Energy Capital, Inc., as Administrative Agent and Collateral Agent. Pursuant to the provisions of Section 3.01 of the Agreement, the undersigned hereby certifies that (i) it is the sole record and beneficial owner of the participation in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members it is not a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iviii) none of its direct or indirect partners/members it is not a ten percent shareholder of Borrower within the meaning of Section 871(h)(3)(B) of the Code Code, and (viv) none of its direct or indirect partners/members it is not a controlled foreign corporation related to Borrower as described in Section 881(c)(3)(C) of the Code. The undersigned has furnished its participating Lender with a certificate of its non-U.S. Person status on IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemptionW-8BEN. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender in writing, and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. Unless otherwise defined herein, terms defined in the Agreement and used herein shall have the meanings given to them in the Agreement. [NAME OF PARTICIPANT] By: Name: Title: Date: , 20[ ] EXHIBIT G-4 G-3 FORM OF U.S. TAX CERTIFICATE (FOR FOREIGN LENDERS PARTICIPANTS THAT ARE

Federal Income Tax Purposes. Reference is hereby made to the Second Lien Credit Agreement dated as of October 19, 2012 (as the same may be amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Agreement”), among DGK ORRI Holdings, LP (“Borrower”), the lenders party thereto from time to time (the “Lenders”), and Xxxxx Fargo Energy CapitalBank, Inc.National Association, as Administrative Agent and Collateral Agent. Pursuant to the provisions of Section 3.01 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole record and beneficial owner of the participation in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members it is not a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iviii) none of its direct or indirect partners/members it is not a ten percent shareholder of Borrower within the meaning of Section 871(h)(3)(B) of the Code Code, and (viv) none of its direct or indirect partners/members it is not a controlled foreign corporation related to Borrower as described in Section 881(c)(3)(C) of the Code. The undersigned has furnished its participating Lender with a certificate of its non-U.S. Person status on IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemptionW-8BEN. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender in writing, and (2) the undersigned shall have at all times furnished such Lender with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. Unless otherwise defined herein, terms defined in the Agreement and used herein shall have the meanings given to them in the Agreement. [NAME OF PARTICIPANT] By: Name: Title: Date: , 20[ ] EXHIBIT G-4 G-3 FORM OF U.S. TAX CERTIFICATE (FOR FOREIGN LENDERS PARTICIPANTS THAT ARE

Federal Income Tax Purposes. Reference is hereby made to the Second Lien Credit Agreement dated as of October 19, 2012 (as the same may be amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Agreement”), among DGK ORRI Holdings, LP (“Borrower”), the lenders party thereto from time to time (the “Lenders”), and Xxxxx Fargo Energy CapitalBank, Inc.National Association, as Administrative Agent and Collateral Agent. Pursuant to the provisions of Section 3.01 of the Credit Agreement, the undersigned hereby certifies that (i) it is the sole record and beneficial owner of the participation Loan(s) (as well as any Note(s) evidencing such Loan(s)) in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members it is not a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iviii) none of its direct or indirect partners/members it is not a ten percent shareholder of Borrower within the meaning of Section 871(h)(3)(B) of the Code and (viv) none of its direct or indirect partners/members it is not a controlled foreign corporation related to Borrower as described in Section 881(c)(3)(C) of the Code. The undersigned has furnished Administrative Agent and Borrower with a certificate of its participating Lender with non- U.S. Person status on IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemptionW-8BEN. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender Borrower and Administrative Agent, and (2) the undersigned shall have at all times furnished such Lender Borrower and Administrative Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. Unless otherwise defined herein, terms defined in the Agreement and used herein shall have the meanings given to them in the Agreement. [NAME OF PARTICIPANTLENDER] By: Name: Title: Date: , 20[ ] EXHIBIT G-4 G-2 FORM OF U.S. TAX CERTIFICATE (FOR FOREIGN LENDERS PARTICIPANTS THAT AREARE NOT

Federal Income Tax Purposes. Reference is hereby made to the Second Lien Credit Agreement dated as of October 19, 2012 (as the same may be amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Agreement”), among DGK ORRI Holdings, LP (“Borrower”), the lenders party thereto from time to time (the “Lenders”), and Xxxxx Fargo Energy Capital, Inc., as Administrative Agent and Collateral Agent. Pursuant to the provisions of Section 3.01 of the Agreement, the undersigned hereby certifies that (i) it is the sole record and beneficial owner of the participation Loan(s) (as well as any Note(s) evidencing such Loan(s)) in respect of which it is providing this certificate, (ii) its direct or indirect partners/members are the sole beneficial owners of such participation, (iii) with respect such participation, neither the undersigned nor any of its direct or indirect partners/members it is not a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business within the meaning of Section 881(c)(3)(A) of the Code, (iviii) none of its direct or indirect partners/members it is not a ten percent shareholder of Borrower within the meaning of Section 871(h)(3)(B) of the Code and (viv) none of its direct or indirect partners/members it is not a controlled foreign corporation related to Borrower as described in Section 881(c)(3)(C) of the Code. The undersigned has furnished Administrative Agent and Borrower with a certificate of its participating Lender with non-U.S. Person status on IRS Form W-8IMY accompanied by one of the following forms from each of its partners/members that is claiming the portfolio interest exemption: (i) an IRS Form W-8BEN or (ii) an IRS Form W-8IMY accompanied by an IRS Form W-8BEN from each of such partner’s/member’s beneficial owners that is claiming the portfolio interest exemptionW-8BEN. By executing this certificate, the undersigned agrees that (1) if the information provided on this certificate changes, the undersigned shall promptly so inform such Lender Borrower and Administrative Agent, and (2) the undersigned shall have at all times furnished such Lender Borrower and Administrative Agent with a properly completed and currently effective certificate in either the calendar year in which each payment is to be made to the undersigned, or in either of the two calendar years preceding such payments. Unless otherwise defined herein, terms defined in the Agreement and used herein shall have the meanings given to them in the Agreement. [NAME OF PARTICIPANTLENDER] By: Name: Title: Date: , 20[ ] EXHIBIT G-4 G-2 FORM OF U.S. TAX CERTIFICATE (FOR FOREIGN LENDERS PARTICIPANTS THAT ARE