Sources: EnviTec Biogas USA Inc., Beaverton, Ore.; CP staff Collins Precast LLC, a PCI-certified architectural and structural producer based in Iroquois, S.D., has delivered wall elements for three prestressed concrete tanks anchoring the largest EnviTec Biogas USA anaerobic digestion plant to date. Built in partnership with SJI Renewable Energy Ventures, the South Dakota facility processes 300,000-plus gallons of manure daily…
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