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OTHER ITEMS AND CHARGES (Tables) | 9 Months Ended
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Sep. 30, 2018
Environmental Remediation Obligations [Abstract] |
Environmental Exit Costs by Cost | In June 2017, we initiated the plan to cease operations of the Southbridge Landfill as disclosed in Note 8, Commitments and Contingencies. Accordingly, in the three and nine months ended September 30, 2018 and 2017, we recorded charges associated with the closure of the Southbridge Landfill as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Asset impairment charge (1) | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 47,999 |
Project development charge (2) | — |  |  | — |  |  | — |  |  | 9,149 |
Environmental remediation charge (3) | — |  |  | — |  |  | — |  |  | 6,379 |
Charlton settlement charge (4) | — |  |  | — |  |  | 1,216 |  |  | — |
Legal and transaction costs (5) | 502 |  |  | 754 |  |  | 1,044 |  |  | 1,341 |
Recovery on insurance settlement (6) | (10,000 | ) |  | — |  |  | (10,000 | ) |  | — |
Southbridge Landfill closure (settlement) charge, net | $ | (9,498 | ) |  | $ | 754 |  |  | $ | (7,740 | ) |  | $ | 64,868 |
(1) | We performed a test of recoverability under FASB ASC 360, which indicated that the carrying value of our asset group that includes the Southbridge Landfill was no longer recoverable and, as a result, the asset group was assessed for impairment with an impairment charge allocated to the long-lived assets of the Southbridge Landfill in accordance with FASB ASC 360.
(2) | We wrote-off deferred costs associated with Southbridge Landfill permitting activities no longer deemed viable.
(3) | We recorded an environmental remediation charge associated with the future installation of a municipal waterline.
(4) | We established a reserve associated with settlement of the Town of Charlton's claim against us. See Note 8, Commitments and Contingencies for additional disclosure.
(5) | We incurred legal and other transaction costs associated with various matters as part of the Southbridge Landfill closure. See Note 8, Commitments and Contingencies for additional disclosure.
(6) | We recorded a recovery on an environmental insurance settlement associated with the Southbridge Landfill closure. See Note 8, Commitments and Contingencies for additional disclosure.

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- Definition Tabular disclosure of material liabilities for remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal or abandonment of a property as a result of unanticipated contamination of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q4) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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