F.N.B. Capital has closed its mezzanine and equity financing package that supported Elk Lake Capital's acquisition of Environmental Services Laboratories and Environmental Land Surveying and Solutions. Headquartered in Indiana, PA, ESLI and ELS&S provide environmental testing, surveying and engineering services to municipalities, engineering firms and private industry, including oil and gas exploration and production companies operating in the Marcellus and Utica Shale regions. Since its inception in November 2005, F.N.B. Capital, the Pittsburgh-based merchant banking subsidiary of F.N.B. Corporation, has completed 20 transactions across 17 different companies.