Frog Switch - Carlisle PA - Supplemental Phase II Environmental Site Assessment

2026-11-03

A 2025 Phase II ESA conducted at the Site identified soil contamination from several metals and polycyclic aromatic hydrocarbons . The objective of this Supplemental Phase II ESA is to further characterize soil impacts by : 1 . Delineating the areas of soil contamination through expanded sampling . 2 . Collecting background samples to establish a standard for arsenic , which is a contaminant of concern that is naturally occurring . The property known as Frog , Switch & Manufacturing Company totals approximately 31 acres and is located at 600 East High Street in Carlisle , Pennsylvania . Carlisle is a borough in Cumberland County . The Site is approximately 1 mile west of the intersection of Interstate 81 and Pennsylvania Route 641 . The Site is relatively flat and slopes slightly to the west . Soils were found to consist mainly of a silty clay material underlain by limestone , which was encountered at varying depths across the Site , approximately ranging from 5 to 32 ft . below the ground surface . Surficial materials generally consisted of loams , sands , or material indicative of fill in the top few feet of the soil surface . Groundwater was not encountered above the limestone formation . The Site location and the boundaries of the investigation are included in solicitation Attachment 5 .

Pennsylvania

2026-05-09