First Pennsylvania Resource has supplied the wetland and stream offsets needed by Shell Chemical to be awarded federal and state permits for its planned world-scale petrochemical complex fed by shale gas-derived ethane in the US Appalachian region.

The wetland and stream mitigation is required to replace the ecological functions and values potentially lost at the impact site including groundwater recharge/discharge, flood flow alteration, wildlife habitat, and/or sediment retention, the Pennsylvania company’ parent, RES, said.

RES said it would deliver the offsets for the project near Monaca, Pennsylvania, by restoring stream and riparian buffer areas along headwater tributaries to the South Fork of Cross Creek.

Restoration of the habitat for warm water fish is also designed to improve channel stability, increase floodplain connectivity and interaction, re-establish PFO floodplain wetland acreage and increase aquatic and terrestrial habitat.