Commitments and Contingencies

Environmental Matters

Substantially all of the Company's properties and land were subject to Phase I Environmental Assessments and when appropriate Phase II Environmental Assessments (collectively, the “Environmental Assessments”) obtained in contemplation of their acquisition by the Company or obtained by predecessor owners prior to the sale of the property or land to the Company. The Environmental Assessments did not reveal, nor is the Company aware of, any non-compliance with environmental laws, environmental liability or other environmental claim that the Company believes would likely have a material adverse effect on the Company.

Operating Ground Lease Agreements

Future minimum rental payments under the terms of all non-cancelable operating ground leases under which the Company is the lessee, as of June 30, 2018, were as follows (in thousands):



Year	Amount
2018 (remaining)	$	914
2019	1,968
2020	1,963
2021	1,963
2022	1,917
2023 and thereafter	33,775
Total	$	42,500

Operating ground lease expense for the three and six months ended June 30, 2018 was $543,000 and $952,000, respectively, as compared to $311,000 and $623,000, respectively, for the same periods in 2017.

Legal Matters

From time to time, the Company is a party to a variety of legal proceedings, claims and assessments arising in the normal course of business. As of June 30, 2018 there were no legal proceedings, claims or assessments that the Company expects to have a material adverse effect on the Company. However, see Note 12 for discussion of Comcast Technology Center.

Other

As of June 30, 2018, the Company had letter of credit obligations of $5.8 million.

As of June 30, 2018, the Company had 21 buildings under development. These buildings are expected to contain, when completed, a total of 6.3 million square feet of leasable space and represent an anticipated aggregate investment of $510.0 million. At June 30, 2018, development in progress totaled $330.8 million. In addition, as of June 30, 2018, the Company had invested $5.5 million in deferred leasing costs related to these development buildings.

As of June 30, 2018, the Company was committed to $2.1 million in improvements on certain buildings and land parcels.

As of June 30, 2018, the Company was committed to $36.0 million in future land acquisitions. The Company expects to complete these purchases during the years ended December 31, 2018 and 2019.

As of June 30, 2018, the Company was obligated to pay for tenant improvements not yet completed for a maximum of $20.7 million.

The Company is currently developing three properties for its unconsolidated joint ventures which represent an anticipated aggregate investment by the joint ventures of $253.9 million.

As of June 30, 2018, the Company was also committed to approximately $180.3 million in costs related to its agreement to develop, on a fee basis, an office building for American Water Works and related infrastructure improvements in Camden, New Jersey. As of June 30, 2018, $143.8 million of these costs had been incurred.

The Company maintains cash and cash equivalents at financial institutions. The combined account balances at each institution typically exceed FDIC insurance coverage and, as a result, there is a concentration of credit risk related to amounts on deposit in excess of FDIC insurance coverage. The Company believes the risk is not significant.