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&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&lt;b&gt;12.&amp;nbsp; &lt;u&gt;COMMITMENTS AND CONTINGENCIES&lt;/u&gt;&lt;/b&gt;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&lt;font style="color: black;" class="_mt"&gt; &lt;/font&gt;&amp;nbsp;&lt;/p&gt;
&lt;h6 style="margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 11pt;"&gt;&lt;font style="font-size: 10pt;" class="_mt"&gt;TAX ABATEMENT AGREEMENTS&lt;/font&gt;&lt;/h6&gt;
&lt;h5 style="text-align: justify; line-height: normal; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;"&gt;Harborside Financial Center&lt;/h5&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;Pursuant to agreements with the City of Jersey City, New Jersey, the Company is required to make payments in lieu of property taxes ("PILOT") on certain of its properties located in Jersey City, as follows:&amp;nbsp; &lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt 0.25in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;The Harborside Plaza 4-A agreement, which commenced in 2002, is for a term of 20 years.&amp;nbsp; The PILOT is equal to two percent of Total Project costs, as defined. &amp;nbsp;Total Project costs, as defined, are $49.5 million.&amp;nbsp; The PILOT totaled $407,000 and $250,000 for the three months ended September 30, 2010 and 2009, respectively, and $958,000 and $751,000 for the nine months ended September 30, 2010 and 2009, respectively.&lt;/p&gt;
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&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;The Harborside Plaza 5 agreement, as amended, which commenced in 2002 upon substantial completion of the property, as defined, is for a term of 20 years.&amp;nbsp; The PILOT is equal to two percent of Total Project Costs.&amp;nbsp; Total Project Costs, as defined, are $170.9 million.&amp;nbsp; The PILOT totaled $1.3 million and $798,000 for the three months ended September 30, 2010 and 2009, respectively, and $3.0 million and $2.4 million for the nine months ended September 30, 2010 and 2009, respectively.&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;At the conclusion of the above-referenced PILOT agreements, it is expected that the properties will be assessed by the municipality and be subject to real estate taxes at the then prevailing rates.&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h5 style="text-align: justify; line-height: normal; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;"&gt;LITIGATION&lt;/h5&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;The Company is a defendant in litigation arising in the normal course of its business activities.&amp;nbsp; Management does not believe that the ultimate resolution of these matters will have a materially adverse effect upon the Company's financial condition taken as whole.&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&lt;b&gt; &lt;/b&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&lt;b&gt;GROUND LEASE AGREEMENTS&lt;/b&gt;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;Future minimum rental payments under the terms of all non-cancelable ground leases under which the Company is the lessee, as of September 30, 2010, are as follows: &lt;i&gt;&lt;font style="font-size: 9pt;" class="_mt"&gt;(dollars in thousands)&lt;/font&gt;&lt;/i&gt;&lt;/p&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;Year&lt;/p&gt;&lt;/td&gt;
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&lt;p style="margin: 0in 9pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;Amount&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;October 1 through December 31, 2010&lt;/p&gt;&lt;/td&gt;
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&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;$&amp;nbsp;&amp;nbsp;&amp;nbsp; 114&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;2011&lt;/p&gt;&lt;/td&gt;
&lt;td style="padding-bottom: 0in; padding-left: 5.4pt; width: 239.4pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="319"&gt;
&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 375&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;2012&lt;/p&gt;&lt;/td&gt;
&lt;td style="padding-bottom: 0in; padding-left: 5.4pt; width: 239.4pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="319"&gt;
&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 367&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;2013&lt;/p&gt;&lt;/td&gt;
&lt;td style="padding-bottom: 0in; padding-left: 5.4pt; width: 239.4pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="319"&gt;
&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 351&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;2014&lt;/p&gt;&lt;/td&gt;
&lt;td style="padding-bottom: 0in; padding-left: 5.4pt; width: 239.4pt; padding-right: 5.4pt; padding-top: 0in;" valign="top" width="319"&gt;
&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 367&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;2015 through 2084 &lt;/p&gt;&lt;/td&gt;
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&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&amp;nbsp; 17,060&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;&lt;/td&gt;
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&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;Total&lt;/p&gt;&lt;/td&gt;
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&lt;p style="margin: 0in 13.5pt 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;$18,634&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;Ground lease expense incurred by the Company during the three months ended September 30, 2010 and 2009 amounted to $102,000, and $181,000, respectively, and $388,000 and $550,000 for the nine months ended September 30, 2010 and 2009, respectively.&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in -0.25in 0pt 0in; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&amp;nbsp;&lt;/p&gt;
&lt;h6 style="margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 11pt;"&gt;&lt;font style="font-size: 10pt;" class="_mt"&gt;OTHER &lt;/font&gt;&lt;/h6&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;The Company may not dispose of or distribute certain of its properties, currently comprising seven properties with an aggregate net book value of approximately $133.8 million, which were originally contributed by certain unrelated common unitholders, without the express written consent of such common unitholders, as applicable, except in a manner which does not result in recognition of any built-in-gain (which may result in an income tax liability) or which reimburses the appropriate specific common unitholders for the tax consequences of the recognition of such built-in-gains (collectively, the "Property Lock-Ups").&amp;nbsp; The aforementioned restrictions do not apply in the event that the Company sells all of its properties or in connection with a sale transaction which the Company's Board of Directors determines is reasonably necessary to satisfy a material monetary default on any unsecured debt, judgment or liability of the Company or to cure any material monetary default on any mortgage secured by a property.&amp;nbsp; The Property Lock-Ups expire periodically through 2016.&amp;nbsp; Upon the expiration of the Property Lock-Ups, the Company is generally required to use commercially reasonable efforts to prevent any sale, transfer or other disposition of the subject properties from resulting in the recognition of built-in gain to the specific common unitholders, which include members of the Mack Group (which includes William L. Mack, Chairman of the Company's Board of Directors; David S. Mack, director; Earle I. Mack, a former director; and Mitchell E. Hersh, president, chief executive officer and director), the Robert Martin Group (which includes Robert&amp;nbsp;F.&amp;nbsp;Weinberg, director; Martin&amp;nbsp;S.&amp;nbsp;Berger, a former director; and Timothy M. Jones, former president), the Cali Group (which includes John&amp;nbsp;R. Cali, director, and John J. Cali, a former director).&amp;nbsp; 130 of the Company's properties, with an aggregate net book value of approximately $1.8 billion, have lapsed restrictions and are subject to these conditions.&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoBodyText2"&gt;&amp;nbsp;&lt;/p&gt;
&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;&lt;font style="color: black;" class="_mt"&gt;The Company&amp;nbsp;had been&amp;nbsp;obligated to acquire from an entity (the "Florham Entity") whose beneficial owners include Stanley&amp;nbsp;C. Gale and Mark Yeager, a former executive vice president of the Company, a 50 percent interest in a venture which owns a developable land parcel in Florham Park, New Jersey (the "Florham Park Land") for a maximum purchase price of up to $10.5 million. In the event the acquisition of the Florham Park Land did not close by May 9, 2010, subject to certain conditions, the Florham Entity would have been obligated to pay certain deferred costs and an additional $1 million to the Company at that time.&amp;nbsp; On May 10, 2010, the parties agreed that the Company would not be obligated to purchase the land and the total amount due to the Company was reduced to $840,000, of which $351,000 is due in May 2015.&lt;/font&gt;&lt;/p&gt;
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&lt;p style="text-align: justify; margin: 0in 0in 0pt; font-family: 'Times New Roman','serif'; font-size: 10pt;" class="MsoNormal"&gt;Sanofi-Aventis U.S. Inc. ("Sanofi"), which occupies neighboring buildings in Bridgewater, New Jersey, exercised its option to cause the Company to construct a building on its vacant, developable land and has signed a lease for the building.&amp;nbsp; The lease has a term of fifteen years, subject to three five-year extension options.&amp;nbsp; The construction of the 205,000 square foot building commenced in 2009 and is expected to be delivered to the tenant in January 2011.&amp;nbsp; The total estimated costs of the project are expected to be approximately $50.9 million (of which the Company has incurred $35.1 million through September 30, 2010.)&amp;nbsp; &lt;/p&gt;&lt;/div&gt; &lt;/div&gt;</NonNumbericText>
          <NonNumericTextHeader>12.&amp;nbsp; COMMITMENTS AND CONTINGENCIES
 &amp;nbsp;
TAX ABATEMENT AGREEMENTS
Harborside Financial Center
Pursuant to agreements with the City of Jersey City, New</NonNumericTextHeader>
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  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
</InstanceReport>
