Portfolio Category: Site Work All Energy Services Environmental Site Work Energy Services Keystone Stage IVA Liner Construction (28.25 acres) Environmental Bangor Ash Site – 2014 Closure (8.4 Acres) Environmental Titus Coal Yard Remediation Environmental Conemaugh Gypsum Sump Environmental Conemaugh Desilting Basin (1 acre) Environmental New Castle Stage VI Closure Construction (10 acres) 1 2 3 4 5 6