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Township says Kimberton superfund plume shrinking; pump-and-treat system to be shut down
Summary
Township staff relayed a consultant update that groundwater contamination at the Kimberton superfund site has substantially reduced; the site’s pump-and-treat system will be shut down while monitoring continues and the township will notify permit applicants about required vapor-intrusion systems.
Township staff told supervisors they had received a quarterly monitoring letter from the project consultant for the Kimberton superfund site indicating the contamination plume is shrinking and that treated groundwater now meets non‑contaminant thresholds.
Because monitoring shows the treated discharge is now non‑contaminated, the consultant reported plans to shut down the site’s pump-and-treat system and continue monitoring wells in the project area. Township staff said they will send a model notice to property owners and to building-permit applicants in the project area advising that any new structures with below‑grade spaces install vapor‑intrusion mitigation systems as a permitting requirement.
The board characterized the news as positive progress. Staff emphasized that monitoring will continue and that property owners should follow permit guidance.
