. additional lawsuits and claims involving environmental matters are likely to arise from time to time in the future . we incurred $ 4.4 million , $ 2.9 million , and $ 2.1 million of expenses during the years ended december 31 , 2015 , 2014 , and 2013 , respectively , for environmental remediation at sites presently or formerly owned or leased by us . as of december 31 , 2015 and 2014 , we have recorded reserves for environmental matters of $ 15.2 million and $ 8.8 million . of these amounts $ 2