EX-10.1

General Terms. The General Partner hereby designates and creates the NLP Common Units as described in Section 1(b) below, to be issued in separate series as set forth herein (each, an “NLP Series”), and fixes the rights and obligations of the holders of each such NLP Series. Except as otherwise set forth in this Amendment, each NLP Common Unit is a Common Unit which entitles the holder thereof to the rights of a holder of a Common Unit as provided in the Partnership Agreement.

Creation and Designation of Series. The following NLP Series are hereby created, with each such NLP Series to be designated as follows:

NLP 51 Common Units; and

NLP 53 Common Units.

Distributions. For purposes of distributions payable to Junior Units pursuant to Section 5.2(a) of the Partnership Agreement, the holders of each NLP Series designated in Section 1(b) above shall be entitled to share in amounts distributable to the holders of Junior Units, with the amount(s) of such distribution(s) to the holders of each such NLP Series pursuant to Section 5.2(a) to be determined by the General Partner in its sole and absolute discretion. The General Partner shall have the authority, exercisable in its sole and absolute discretion, and without the approval of any Limited Partner or any other Person, to determine or change, at any time or from time to time, the amount or rate of, or manner of calculating, the distribution(s) payable to holders of each such NLP Series pursuant to this paragraph. Each distribution payable to the holders of each such NLP Series pursuant to this paragraph shall be made among such holders, pro rata, in accordance with their respective Percentage Interests in the applicable NLP Series, in each case as of the record date for such distribution. For the avoidance of doubt, the amount of any distribution payable to a holder of an NLP Series pursuant to Section 5.2(a) of the Partnership Agreement and the terms of this paragraph may be different than the amount of any distribution payable to the

holders of any other class or series of Junior Units.

No Conversion Rights. The holders of each NLP Series designated in Section 1(b) above shall not have any rights to convert such units into Partnership Units of any other class or series of units or into any other securities of, or Partnership Interests in, the Operating Partnership.

No Redemption Rights. Notwithstanding any contrary provision in the Partnership Agreement, the holders of each NLP Series designated in Section 1(b) above shall not have any Redemption Rights as set forth in Section 8.5 of the Partnership Agreement. The General Partner shall have the authority, exercisable at any time after the date of this Amendment in its sole and absolute discretion, and without the approval or consent of any Limited Partner or any other Person, to provide Redemption Rights pursuant to Section 8.5 of the Partnership Agreement to the holders of one or more NLP Series designated in Section 1(b) above. Upon a determination by the General Partner to provide Redemption Rights pursuant to the preceding sentence, the General Partner shall give prompt written notice thereof (in accordance with Section 12.1 of the Partnership Agreement) to each holder of the NLP Series to which Redemption Rights are granted, but in no event later than five business days after the date the General Partner takes action to provide such Redemption Rights.

Capitalized Terms. All capitalized terms not otherwise defined herein shall have the meanings set forth in the Base Agreement.