2. ACQUISITIONS Business Combinations 2015 Transactions Pennsauken pipeline acquisition In December 2015, we acquired a pipeline and associated tanks and other infrastructure in Pennsauken, New Jersey for $5.3 million . The operations of these assets are reported in our Domestic Pipelines &amp; Terminals segment. The acquisition cost has been allocated on a preliminary basis to assets acquired based on estimated fair values at the acquisition date, with amounts exceeding the fair value recorded as goodwill, which represent expected synergies from combining the acquired assets with our existing operations. Fair values have been developed using recognized business valuation techniques. The estimates of fair value reflected as of June 30, 2016 are subject to change pending final valuation analysis. The purchase price has been allocated to tangible and intangible assets acquired and liabilities assumed as follows (in thousands): Property, plant and equipment $ 5,287 Goodwill 2,372 Environmental liabilities (2,372 ) Allocated purchase price $ 5,287 Unaudited Pro forma Financial Results for the Pennsauken pipeline acquisition Our consolidated statements of operations do not include earnings from the pipeline and associated tanks and other infrastructure prior to December 10, 2015, the effective acquisition date of these assets. The preparation of unaudited pro forma financial information for the pipeline and associated tanks and other infrastructure is impracticable due to the fact that meaningful historical revenue information is not available. The revenues and earnings impact of this acquisition was not significant to our financial results for the three and six months ended June 30, 2016 . Springfield pipeline and terminal acquisitions In March and May 2015, we acquired a terminal and pipeline, respectively, in Springfield, Massachusetts from ExxonMobil Oil Corporation (ExxonMobil) for an aggregate $7.7 million . The operations of these assets are reported in our Domestic Pipelines &amp; Terminals segment. The acqu