EFI USA

When gas production on a covered lagoon drifts down and the feedstock has not changed, check the volume before the biology. Anaerobic digestion removes volatile solids. It does not remove sand, grit, struvite, or lignin-bound fiber. Those arrive with the waste stream and settle. On the lagoon closures we have run, the sludge layer commonly measures 20 to 40 percent of basin volume. Retention time is volume divided by flow, so a basin that has lost a third of its depth underperforms whatever the biology is doing. Under a gas-tight cover none of this is visible. You cannot run a boat, and walking survey gear across a floating membrane risks the cover. Measurement depends on the access built in at construction. Survey ports, sealed penetrations, sludge transfer piping to the low point. Ask when the basin was last surveyed. If the answer is never, that is the finding. #CoveredLagoonDigester #Biogas #AnaerobicDigestion #DigesterCovers #LagoonMaintenance

New Orleans, we'll see you in September. 🎺 EFI USA and EC Applications will be at #WEFTEC2026, September 28–30, at Booth #9123, and we're showing up as what we are today: a single, national partner for water and wastewater containment. Floating covers. Liners. Baffles. Odor and gas control. One team, one point of contact, hundreds of completed systems behind it. If you're a utility owner, consulting engineer, or contractor planning containment work, this is worth 10 minutes of your show floor time. Schedule a time to chat with us here: https://hubs.la/Q04sp0kv0 #WEFTEC2026 #WEFTEC #Wastewater #EnvironmentalContainment #NewOrleans

A palm oil mill in Tecun Uman, Guatemala runs 720 tons of fresh fruit a day and discharges more than 1,000 cubic meters of effluent in the same 24 hours. EFI fabricated and installed the anaerobic lagoon covers and the biogas collection system at Grupo Hame's Olmeca III mill, completed in 2009. That stream yields about 24,000 cubic meters of biogas a day at 54 to 65 percent methane, enough to run generators at 2 megawatts continuously. The mill powers itself on waste it already had to manage. Olmeca III is one of more than 300 covered lagoon digester systems we have installed across Latin America. Feedstocks change from site to site. Dairy manure, swine waste, and food processing effluent each behave differently. The engineering sequence does not change: characterize the stream first, then size the cover and gas train to the gas it will realistically produce.

On a covered digester, capture is decided at the perimeter trench and at every pipe boot and hatch. A cover that is 98 percent sealed is far from 98 percent effective, because methane lost at a seam never reaches the meter. That is the number an owner pays for. The cover is a seal, not a lid. An open anaerobic lagoon is already making biogas long before we arrive. The bacteria breaking down dairy, swine, or food-processing waste do not wait for equipment. Roughly 55 to 75 percent of that gas is methane, and on an uncovered surface it drifts into the air. A gas-tight cover captures what the basin was already producing and losing. Many of the digesters we build are retrofits over basins that treated waste for years. The treatment worked. The gas just had nowhere to go. We build these systems.

One inch of rain on one acre of floating cover is roughly 27,000 gallons. A cover built to hold water in has to shed water off its own top surface, or it pools and that load works against the panel welds and the perimeter anchoring. So a continuous cover on a larger reservoir usually gets a defined-sump layout. Floats and ballast weights are arranged in a pattern that channels rainwater toward sumps, where it is pumped off. Perimeter anchoring takes the water-level swings of a working reservoir for years without pulling loose, and on exposed sites it carries wind uplift too. We build these systems. Covers are one of five lines of work for us, alongside liners, biogas systems, oxygen injection, and covered lagoons.

An open reservoir in a dry climate can lose four to seven feet of water off its surface in a single year. Across a multi-acre impoundment, that is millions of gallons that were captured, moved, or paid for once, gone before they ever reach a crop, a process line, or a tap. A floating cover keeps that water in the reservoir. It is a flexible geomembrane that rests on the water, rises and falls with the level, and anchors around the perimeter, taking the surface out of contact with sun and wind. It also shades out algae and keeps dust, debris, and waterfowl off the water, so what stays behind is cleaner. We have built geosynthetic systems for water and waste impoundments for more than 30 years. On a storage project the cover, the liner beneath it, and the anchoring are one system. We build all three.

One month in. Where we go from here. Bringing EFI USA and EC Applications (ECA) together was never about size for its own sake. It was about being able to say yes to more of the work our customers need done well: larger programs, more geographies, tighter timelines, and more complex scopes. The combined team is already drawing on both sides of the house to deliver for clients. That is the whole point. One organization, one standard, and the range to handle nearly any environmental containment challenge in the country. Thank you to the customers, partners, and crews who have trusted us through this transition. We are building something worth that trust. Featured in the picture Nicolas Gonzalez from EC Applications and EFI USA Construction Manager, Fernando. #EFIUSA #ECA #OneMonthIn #EnvironmentalContainment #Geosynthetics #Biogas #Infrastructure #StrongerTogether

To our clients and partners, you probably have one question: "What does this merger mean for me?" Here's the short answer: more capability, same trusted teams. We know change raises questions, so here are the ones we're hearing most: Will my project be affected? No. Active projects, timelines, and field operations continue without disruption. Your superintendents, project managers, and account contacts are unchanged. Does this change my contract? No. All existing contracts and commitments remain in full effect. Nothing has changed in your terms or obligations. Who will I be working with going forward? Both EFI and ECA continue to operate under their respective brands, now under one organization. The teams, responsibilities, and relationships you already have stay exactly as they are. What do I actually gain from this? Access to one of the most complete environmental containment teams in the country, covering geosynthetics and membrane installation, pit and landfill lining, mining and tunnel liners, biogas and floating cover systems, wastewater facility construction, erosion control, and full engineering and program management. More crews, more coverage, more depth behind every project. Where do you operate? Our office locations have grown - now spanning South Carolina, Texas, California, and Nevada - and we still have the ability to mobilize nationally and internationally. Who do I call with questions? Your existing point of contact remains your go-to. For anything urgent, reach EFI USA at (307) 264-0309 or EC Applications at (714) 921-9848. We've spent 20 years building trust with the clients and partners we serve. That doesn't change, it just gets stronger. #EFIUSA #ECA #ClientFirst #EnvironmentalContainment #Geosynthetics #Landfill #Biogas #WastewaterInfrastructure

One team, coast to coast. With EFI USA and EC Applications (ECA) now operating as one organization, our combined field and engineering teams work from South Carolina, Texas, California, and Nevada. For our customers, the most important point is continuity. The superintendents, project managers, and crews you already work with are the same. Your points of contact are the same. Your contracts and timelines are unchanged. What is different is the depth of the bench standing behind each project. The leadership that built ECA, including Christopher Fore and Nicolas Gonzalez, continues to lead that work alongside the EFI team. Decades of combined experience in geosynthetic installation, now under one roof. Same people. Same standards. More capability when you need it.