COMMITMENTS AND CONTINGENCIES

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

4. COMMITMENTS AND CONTINGENCIES

Claims and Legal Proceedings

In the ordinary course of business, we are involved in various claims and legal proceedings, some of which are covered by insurance.  We are generally unable to predict the timing or outcome of these claims and proceedings.  Based upon our evaluation of existing claims and proceedings and the probability of losses relating to such contingencies, we have accrued certain amounts relating to such claims and proceedings, none of which are considered material.

Environmental Contingencies

At March 31, 2018 and December 31, 2017, we had $40.4 million and $41.0 million, respectively, of environmental remediation liabilities unrelated to claims and legal proceedings.  Costs ultimately incurred may be in excess of our estimates, which may have a material impact on our financial condition, results of operations or cash flows.  At March 31, 2018 and December 31, 2017, we had $5.0 million and $5.3 million, respectively, of receivables related to these environmental remediation liabilities covered by insurance or third-party claims.