. management anticipates that the resolution of the company 2019s environmental contingencies will occur over an extended period of time . as of december 31 , 2018 and 2017 , ppg had reserves for environmental contingencies associated with ppg 2019s former chromium manufacturing plant in jersey city , n.j . ( 201cnew jersey chrome 201d ) and for other environmental contingencies , including national priority list sites and legacy glass and chemical manufacturing sites