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Frontera Creek
Junquito, PR

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Involvement Coordinator

Luis Santos (787) 977-5824

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EPA added the Frontera Creek site in Junquito, Puerto Rico to the Superfund National Priorities List on December 29, 1998 because hazardous chemicals were found in the soil and water.  The 100 acres superfund site consists of areas that lie east of the town of Junquito and extends to the creeks that enter into the Caribbean Sea, North and South Frontera Lagoons, the Ciudad Cristiana Housing Development and industrial properties adjacent to Frontera Creek.  Nearby industrial properties discharged industrial waste directly into Frontera Creek.  EPA investigations of the site confirmed that contaminants, including mercury and pesticides were present in the creek.  A 500 resident housing development was build along the creek.  Soil in and near the development was contaminated with mercury. 

EPA addressed the clean up of the site by first investigating the entire site and choosing the best clean-up method.  EPA choose to excavate the sediments from a ditch that leads to Frontera Creek and also selected removing some soils from highly contaminated property.  Excavated mercury contaminated soils and sediments were disposed of off-site.  Approximately 800 cubic yards of sediment and soils from one of the industrial facilities were excavated and disposed.  The clean up was completed in 1995.  Under current conditions at this site, potential or actual human exposures are under control.


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