Earth Day is a good reminder to slow down and appreciate the planet we all share. Once a year, people around the world take stock of the water, the land, and the ecosystems that make everything else possible, and think about what it means to take care of them. At Exlterra, that conversation happens every day.   So, happy Earth Day. We mean it.   Since our founding, Exlterra has been guided by a straightforward premise: the best solutions work alongside natural systems rather than in opposition to them. That philosophy is reflected in everything we do. Our Groundwater Energy Passive System (GEPS®) is a clear example. Rather than rerouting or discarding stormwater the way conventional drainage does, GEPS® operates in harmony with the natural hydrological cycle, rebalancing soil moisture, recharging groundwater, and reducing runoff without the need for external energy inputs. The results GEPS® has achieved worldwide reflect a fundamentally different method of environmental problem-solving that resolves water issues while putting the earth first. The same thinking carries through our NEPS® and NSPS® technologies, which address nutrient management and soil quality challenges, helping nature improve in situ conditions without invasive chemical or mechanical intervention.   The work we do is rooted in practical infrastructure design, building passive systems that deliver long term benefit without an environmental tradeoff. Roads, airports, parks, residential developments, the places people live and work every day, can all be designed to give back instead of just taking. That is the future Exlterra is working toward, one project at a time.   On a day like today, it is worth remembering that caring for the planet does not have to mean major sacrifice. Sometimes it starts with better solutions design and respect for how natural systems already work, around us and under our feet.   From everyone here at Exlterra, we hope you have a wonderful Earth Day.

Every spring, the calls start coming in. A resident's yard holds water for days after a storm. A basement floods for the third year running. A low-lying neighborhood turns into a temporary pond after a moderate rain event. The homeowners do what any reasonable person would do: they call their municipality and ask for help. And here is where things get complicated. The municipality wants to help, but often cannot offer the one solution the resident expects: a new connection to, or increased discharge into, the existing storm sewer system. The pipes are already at capacity. The infrastructure is aging. Regulators are watching. The system simply cannot absorb more stormwater. Both parties end up in a frustrating impasse. The resident has a real, legitimate problem. The municipality has real, legitimate constraints. And the gap between those two realities has historically been filled with expensive workarounds, or nothing at all. Exlterra's GEPS® (Groundwater Energy Passive System) technology was built precisely for this gap. The Municipal Stormwater Dilemma Most stormwater infrastructure in American cities and towns was designed decades ago, sized for a landscape that no longer exists. Suburban sprawl has replaced permeable fields and forests with rooftops, parking lots, and compacted lawns, surfaces that shed water rapidly instead of absorbing it. The result is that storm sewers, designed for pre-development hydrology, now receive far more water than they were engineered to handle. When a resident's property has a drainage problem, the instinctive fix is to route that water somewhere else: a catch basin, a street drain, a tie-in to the municipal system. But municipalities operating under MS4 permits, combined sewer overflow control programs, or simply capacity constraints cannot legally or practically accept additional stormwater inputs. Doing so shifts the flooding problem downstream, increases treatment costs, and puts the municipality out of compliance with state and federal regulators. The options historically available to residents are almost universally problematic. Expensive underground drainage systems require major excavation. French drains may simply move water to a neighbor's property. Detention cisterns need to be manually emptied or pumped. Regrading is disruptive and often short-lived. Draining stormwater onto a neighbor's yard is a potential nuisance liability. And sump pumps typically discharge to the storm system anyway, which circles right back to the original constraint. What neither the resident nor the municipality had, until recently, was a tool that removes water from the problem entirely by returning it to where it naturally belongs: the ground. What GEPS® Actually Does GEPS® works by fundamentally improving the soil's own capacity to accept and distribute moisture, operating in harmony with the natural hydrological cycle rather than circumventing it. There are no pumps, no electrical requirements, and no connections to the storm sewer. There is no trenching, no major excavation, and no removal of material, so lawns and landscaping remain intact. The top of each unit sits roughly two feet below grade, capped to prevent direct surface channeling. Over an acclimation period of several months, the GEPS® units allow water to move more freely through the vertical and horizontal soil matrix, turning the soil itself into a more effective sponge. The outcome is a lasting transformation in how that ground responds to precipitation. Water that would have pooled, run off, or overwhelmed drainage infrastructure instead percolates into the soil. No connection to the municipal system is required, and no new volume is added to already-stressed infrastructure. Why This Is the Tool Municipalities Have Been Waiting For GEPS® reframes the entire relationship between a resident's stormwater complaint and what a municipality can offer in response. Instead of telling a homeowner that the system cannot accept their water, municipalities can point to a solution that resolves the problem on-site, without adding a single gallon to the storm sewer system. This has meaningful implications across several areas: Regulatory Compliance Municipalities operating under MS4 stormwater permits or combined sewer overflow control programs face strict limits on total system inputs. Facilitating GEPS® installations in residential neighborhoods actively reduces the volume entering the municipal system, supporting compliance rather than threatening it. Every acre of residential property that infiltrates more effectively is one less acre sending runoff downstream. Infrastructure Longevity Reducing inflow and infiltration at the source, in residential soils, helps extend the useful life of existing pipe networks and defer costly capital replacement projects. Prior studies also found that GEPS® reduced groundwater infiltration into old, porous storm sewer pipes, further lightening the load on aging infrastructure. Equitable Service Without an on-site solution, lower- and middle-income residents facing drainage problems are often left with no good options. Engineered French drain systems, underground dry wells, and professional regrading are simply out of reach for many households. GEPS® offers a scalable, comparatively accessible technology that municipalities can explore supporting, subsidizing, or recommending as part of their stormwater assistance programs. Neighbor Relations and Nuisance Avoidance When residents cannot get municipal help, some take matters into their own hands, regrading their yards to push water toward a neighbor or installing pipes that discharge onto adjacent property. These situations generate complaints, sometimes litigation, and always headaches for municipal staff. GEPS® addresses water where it falls, on the property where the problem exists, without displacing it elsewhere. A New Conversation Between Cities and Their Residents The stormwater challenge facing municipalities is not going to get easier. Changing precipitation patterns, more intense storms and longer dry spells followed by heavy rainfall events, are placing increasing demands on infrastructure that was never designed for today's conditions. Meanwhile, the cost of leaving residents with flooded yards, wet basements, and no path forward is real and growing. GEPS® fills a specific, critically underserved gap: the residential stormwater challenges that cannot be solved by connecting to the storm sewer. For municipalities, it offers something rare: a way to say yes. A genuine, validated, minimally invasive solution that works on the property where the problem exists, without adding burden to a system already under strain. That is the answer residents have been waiting for. And it is the answer municipalities can now actually offer. Interested? Learn more or find a licensed installer near you today!

The solar energy revolution is reshaping land across the globe. Hundreds of thousands of acres have been converted to utility-scale solar arrays, each one generating clean electricity while standing on something that rarely gets discussed: the soil itself. The panels in an array decrease surface area for the ground to absorb stormwater, and the same heavy equipment used to build these facilities leave behind compacted soils. Uneven and/or poor moisture distribution can be expensive for a solar installation, with drainage, maintenance, and repair costs creating a significant concern for solar developers, operators, and insurers as to long-term expense and longevity. A passive, maintenance-free technology from Exlterra called the Groundwater Energy Passive System (GEPS®), addresses both of solar's major soil-related headaches: stormwater runoff driven by construction compaction and decreased permeable surface area, and long-term structural damage caused by uneven moisture distribution around panel footings. The Compaction Problem When a solar developer breaks ground, the land is fundamentally transformed. Heavy grading equipment levels terrain, pile drivers hammer steel posts into the earth dozens or hundreds of times per acre, and service vehicles travel repeatedly over the same paths during construction and throughout the operational life of the site. The result, confirmed by U.S. Department of Energy-funded research, is soil compaction — one of the single greatest stormwater management challenges facing the solar industry today. A DOE-funded study known as PV-SMaRT, conducted by the Great Plains Institute in partnership with NREL and the University of Minnesota, found that compacted soils between solar arrays can roughly double the volume of stormwater runoff compared to undisturbed land. Unlike conventional development, where impervious surfaces are acknowledged and stormwater infrastructure is sized accordingly, solar facilities often occupy a regulatory gray area where they're treated as pervious when, in practice, their compacted surfaces can behave like parking lots during a rainstorm. Solar panels also concentrate rainfall runoff at the lower panel edge, known as the drip line. Research at Pennsylvania solar farms found soil moisture directly beneath drip lines ran 19% higher than adjacent land over a full year of monitoring, while soil beneath the panels themselves ran 25% lower. These persistent wet zones erode the ground below them, overwhelm perimeter BMPs with sediment-laden runoff, and create compliance headaches for stormwater operators. The Infiltration Problem Each solar panel surface is a hard, smooth, non-absorbing plane. Rainfall that would otherwise be distributed across the ground at natural intensities is instead intercepted, accelerated across the panel face, and shed in concentrated sheets along the drip line. Panel coverage behaves much like a metal roof — high runoff coefficients, short time of concentration, and peak flows that arrive faster and with more energy than pre-development conditions would produce. When the contributing panel area is scaled across hundreds of acres, this effect is substantial. A large utility-scale array may shade and redirect rainfall from a significant fraction of the site's total footprint. Regulatory frameworks that calculate impervious cover based solely on hardscape may dramatically undercount the effective runoff-generating area of a solar installation. Permitting assumptions built around a "mostly pervious" site can leave the project's stormwater calculations materially wrong before construction even begins, requiring costly and time-sensitive stormwater management solutions. The fill and grading practices common to solar site preparation compound this further. Sites are typically cut and filled to achieve consistent panel orientation and minimize inter-row shading, often importing or redistributing significant volumes of material. Engineered fill, particularly when placed over existing topsoil without amendment, tends to be denser than the native soil it covers or displaces. Infiltration rates in fill zones may be only a fraction of what pre-grading conditions supported. When this reduced-permeability fill underlies inter-row areas that are also receiving concentrated drip-line flow, the runoff calculations worsen considerably. The site generates more water in more concentrated patterns, across soils that are less capable of absorbing it, than developers are ready for. GEPS® directly addresses this compounding effect. By improving soil structure/behavior in compacted and disturbed zones — including fill areas — the system works to restore infiltration capacity passively over the operational life of the site. The inter-row areas where most of the problems occur are precisely the zones where a well-designed GEPS® installation can reintroduce infiltration that fill placement and construction traffic have removed. The Structural Problem The moisture gradient created by solar arrays is also a slow-moving structural threat. Differential settlement, where one part of a foundation sinks faster or deeper than adjacent sections, is well understood in geotechnical engineering. Its causes include variable soil composition, poorly compacted fill, and fluctuating soil moisture levels. Soils that cycle repeatedly between wet and dry states expand and contract; over years, this movement beneath neighboring pile footings is a reliable recipe for foundation problems. For solar trackers with continuous torque tubes connecting multiple panel rows mechanically, even a few inches of relative movement between adjacent pile footings can bend and jam the tracker mechanism, crack welds, and require expensive repairs or early component replacement. A support that technically remains standing can still cause major operational problems if it shifts enough to misalign rows, stress cables, or put the array out of spec. This risk compounds over the 25 to 30-year operational life of a typical solar installation. The soil beneath panels stays drier because it is sheltered from rain. The soil beneath drip lines stays wetter because it receives concentrated runoff. These chronic moisture gradients drive uneven shrink-swell behavior in clay soils, causing adjacent pile footings to settle at different rates over time. The problem rarely appears in initial project pro formas and frequently doesn't manifest until years after the original EPC contractor's warranty has expired. The Infrastructure Problem When a solar facility generates more runoff than the landscape can absorb, the excess water has to go somewhere. And getting it there safely and in regulatory compliance is not cheap. Solar projects on sites with meaningful runoff impacts routinely require engineered drainage infrastructure: graded swales and ditches to convey surface flows away from inter-row areas, inlet structures to collect and route concentrated discharge, and detention or retention ponds to attenuate peak flows before release to receiving waters. In many jurisdictions, stormwater management requirements are triggered based on calculated post-development runoff volumes, and a solar facility that honest hydrologic modeling treats as substantially impervious may face the same infrastructure obligations as a commercial shopping center of comparable size. Detention pond sizing, outlet control structures, emergency spillways, and the embankments that contain them represent meaningful capital cost — and, unlike the panels, they produce no revenue. The ongoing maintenance burden of this infrastructure is also significant and poorly appreciated at the pro forma stage. Detention ponds accumulate sediment, particularly when upgradient drip-line erosion is active; forebays fill and require periodic excavation. Swales and ditches that carry concentrated, fast-moving flow erode their own banks and need regular inspection and regrading. Outlet structures clog, riser pipes corrode, and embankments require mowing and periodic inspection to meet dam safety requirements where they apply. These are recurring operational costs, not one-time construction items. When GEPS® restores soil infiltration capacity in inter-row areas and moderates the concentrated discharge from drip-line zones, it reduces the hydrologic loading that the downstream drainage infrastructure must handle. A site that infiltrates more and discharges less through GEPS® may require smaller ponds, shorter swale runs, simpler outlet designs, or no additional stormwater designs altogether. The savings on infrastructure capital and the avoided maintenance cost over a 30-year project life represent real financial value that sits alongside GEPS®'s stormwater compliance and structural benefits. GEPS® is the Solution GEPS® is a passive soil moisture redistribution system. Each unit is a slender, 1¼-inch diameter polyethylene shaft available in lengths from 5 to 40 feet, installed using a lightweight drilling rig (the Exlterra HAZL) with a small-diameter auger. GEPS® operates by passively creating pressure conditions that allow moisture to migrate volumetrically in 3 dimensions through the surrounding soil matrix — even in low-permeability clay layers where vertical infiltration is typically limited. During an acclimation period following installation, the soil reorganizes around each GEPS® unit, developing improved moisture balance and a healthier pore structure. GEPS® works with the natural hydrological cycle: when wet zones form, moisture migrates toward drier zones; when dry zones develop, moisture redistributes from wetter areas nearby. The system has no moving parts, requires no electricity, and demands no maintenance. For solar fields specifically, this means two things: Stormwater that previously ran off compacted soil begins infiltrating again as the pore structure recovers, reducing surface ponding and the concentrated flows that erode drip line soils. The uneven moisture gradient between drip lines and under-panel zones gradually flattens as moisture redistributes laterally across the soil volume. Pile footings across the array end up in a more uniform moisture environment, reducing the differential shrink-swell behavior that drives damage during settlement. The Case for Acting Early with GEPS® Post-construction remediation of stormwater and erosion problems at solar sites is consistently more expensive than prevention. Scarifying detention pond bottoms, installing emergency erosion controls, and negotiating with regulatory agencies over compliance violations all cost real money and operational attention. Research cited in Chesapeake Bay watershed stormwater studies found that landscapes compacted by solar construction can remain so for a decade or more after panels are removed and the land is replanted. Differential settlement repairs are similarly disruptive. Retrofitting or replacing continuous torque tube trackers after foundation movement requires taking rows offline, mobilizing specialized crews, and potentially revising engineering documentation. The structural consequences of soil moisture mismanagement often don't surface until year five, ten, or fifteen of a project. GEPS® addresses both problems through a single installation. The technology leaves no above-ground infrastructure to interfere with maintenance vehicles. A 40-foot unit influences a soil volume approximately 52 feet in diameter, meaning a well-designed array of units can cover the inter-row spacing of a large solar facility with overlapping zones of influence. The system begins acclimating immediately after installation and continues working for the full operational life of the project. As solar development moves toward more challenging sites — heavier clay soils, complex hydrology, former agricultural land with compaction history — the need for tools that address soil health proactively will only grow. GEPS® provides solar operators a way to meet that challenge without adding operational complexity or ongoing maintenance burden. Panels are important, but the ground the panels are installed on can make or break a long-term investment into solar. Interested? Learn more or find a licensed installer near you today!

If you've ever noticed cracks snaking across a basement wall, doors that suddenly won't close right, or a driveway that's heaved up in the middle of nowhere, you may have experienced one of the most costly and least-talked-about problems in construction: expansive clay heave . It's a problem that quietly destroys billions of dollars in homes, commercial buildings, and infrastructure every year. And for too long, the construction industry has been fighting it with the wrong tools. That's changing. What Is Clay Heave — and Why Is It So Destructive? Expansive clay is found across large swaths of soil volumes around the world. Unlike stable soils, clay swells dramatically when it absorbs moisture and shrinks when it dries out. This constant cycle of expansion and contraction creates what engineers call vertical soil displacement  — and when it happens unevenly beneath a structure, the consequences can be severe. We're talking about swelling pressures that can exceed 10,000 pounds per square foot. Foundations crack. Slabs buckle. Walls rack. Utilities break. Clay heave remediation is notoriously expensive, not counting the warranty headaches, legal exposure, and reputational damage that follow for builders and developers. The root cause, critically, isn't just the presence of clay. It's moisture variability  — the uneven wet and dry conditions that develop beneath and around a structure over time. Irrigation on one side of a home, shade on another, poor drainage at a corner — all of these create differential moisture patterns that make one area of soil swell while another shrinks, tearing structures apart from below. Why Traditional Solutions can Fall Short The construction industry has tried to solve this problem for decades. The most common approaches all have a fundamental flaw: they work around clay heave instead of addressing what actually causes it. Deep foundations  (piers and piles) transfer loads down to stable soil below the active zone. But the near-surface soils — the ones under your driveway, sidewalks, utilities, and landscaping — keep right on moving. Over-excavation and replacement  removes the problematic clay and swaps it for engineered fill. It's enormously disruptive and expensive, and moisture can still migrate back into residual clay at the edges and interfaces over time. Chemical stabilization  with lime or cement alters the soil's chemistry to reduce swell potential — but it doesn't regulate the moisture fluctuations that continue to drive differential movement. Performance is highly dependent on soil chemistry and quality control, and results can degrade over time. Structural reinforcement  — post-tensioned slabs and other heavy-duty systems — makes structures better at surviving movement, but doesn't reduce the movement itself. Cosmetic and serviceability damage still occurs. None of these methods fix the actual problem. They're all, in one way or another, just bracing for impact. GEPS: Treating the Cause, Not the Symptom GEPS (Groundwater Energy Passive System)  takes a fundamentally different approach. Instead of resisting or accommodating clay heave, GEPS is designed to stabilize the soil moisture conditions that cause it in the first place . GEPS units are installed vertically into the ground, forming a network of moisture-rebalancing technology throughout the soil mass. Here's what makes it remarkable: the system is entirely passive . No pumps, no electricity, no moving parts. It works by harnessing natural soil pressure and moisture cycles to promote the three-dimensional redistribution of water within the soil. The result is that moisture is continuously equalized across the footprint of a structure. Instead of one corner staying wet from irrigation while the opposite side dries out under full sun exposure, the soil beneath and around the building trends toward a more uniform moisture state. The violent wet-dry swings that drive heave are dampened. The "hot spots" of chronic saturation — which create the worst heave episodes — are reduced as moisture redistributes vertically and laterally across soil layers. Over time, this means the soil behaves more predictably. Heave and settlement still occur, but within a much narrower band. Foundations move less differentially. Slabs stay more level. Utilities stay intact. What This Means for Homeowners, Builders, and Developers For homeowners , GEPS offers something that no other technology has really delivered: long-term peace of mind about the ground under and around your home. GEPS doesn't just move water downward — it rebalances moisture in all directions, including laterally, stabilizing the full soil volume surrounding a structure. Critically, GEPS can be installed before construction even begins , preemptively improving soil conditions on a site before a single foundation is poured. It can equally be deployed as a reactive measure  on existing structures where clay heave has already become a problem, making it a solution for new builds and long-suffering homeowners alike. For builders and developers , the calculus is compelling. GEPS installation costs significantly less than the remediation bill for a single home with serious clay heave damage — and far less than the deep foundation or full excavation alternatives that still don't solve the underlying problem. More importantly, GEPS directly reduces the moisture variability that drives warranty claims — meaning fewer callbacks, less litigation exposure, and a stronger reputation for building on difficult sites. The system's protection extends beyond the foundation itself. Slabs-on-grade, driveways, sidewalks, and underground utilities all sit in the same active zone that GEPS stabilizes. That comprehensive coverage is something deep piers and chemical treatments simply can't match. For developers managing subdivisions , GEPS scales efficiently. Layouts can be tailored to specific footprint geometries and site conditions, and the approach is repeatable across identical plan sets. There's no operational overhead — once installed, the system maintains itself indefinitely through natural soil cycles. A Smarter Way to Build on Difficult Ground What makes GEPS genuinely novel is that it works with  soil physics rather than fighting against it. The same capillary forces and pressure differentials created by natural wet-dry and freeze-thaw cycles are precisely what power the system. It doesn't try to dry out the soil or waterproof it from above — it uses the soil's own energy to achieve a more stable equilibrium state. For decades, the industry's response to expansive clay has been to build stronger, heavier, and deeper. GEPS asks a different question: what if we made the soil itself more stable? That's not just a better technical answer. For homeowners who've watched their walls crack and their doors stick year after year, and for builders who've fielded the calls and absorbed the costs — it's also a long-overdue one. Interested? Learn more or find a licensed installer near you today!

The hidden costs of waiting for radioactivity to fade away add up fast. So do the decades it takes for garbage to decompose in landfills. Exlterra's NSPS technology offers a practical solution to both problems, potentially revolutionizing how industries handle radioactive waste storage. The Radioactive Waste Storage Problem When oil and gas companies drill wells, they often use radioactive tracers to track where fluids go underground. Proppant sand gets labeled with isotopes like iridium-192 or silver-110m so engineers can monitor fracturing patterns. When that sand comes back up, it's radioactive. The same thing happens naturally. Deep underground formations contain naturally occurring radioactive materials like radium and uranium. When drilling brings these materials to the surface, they become what regulators call TENORM—Technologically Enhanced Naturally Occurring Radioactive Material. This stuff has to be stored until it's safe enough to dispose of as regular waste. Here's the problem: that waiting period can stretch for years or even decades, depending on which isotopes you're dealing with. Iridium-192 has a half-life of 74 days, which means you're waiting months just to get it halfway to safe. Cobalt-60, another common tracer, has a half-life of over 5 years. Storage facilities have to hold this material, monitor it, secure it, and maintain expensive infrastructure the entire time. The costs pile up quickly. You need specialized storage facilities with proper shielding, security systems, regulatory compliance staff, and ongoing monitoring. For large operations, this can mean millions of dollars tied up in storage operations. And that's just for the material from one well or one facility. How NSPS can change the Storage Equation NSPS can significantly shrink the time radioactive materials need to sit in storage. By accelerating the natural decay process, materials that would normally require 5-10 years of storage could potentially be safe for disposal in months or a couple of years instead. The logistics get simpler too. Instead of managing long-term storage facilities with decades worth of material accumulating, companies could operate with much smaller footprints. Less material waiting around means less space needed, fewer security concerns, and lower insurance costs. Think about it from a cost perspective. If you could reduce storage time by 75%, you'd be cutting your storage facility operating costs by a similar amount. For a company in the energy sector dealing with hundreds of wells, that's substantial savings. The technology pays for itself by eliminating years of storage fees, compliance costs, and tied-up capital. The same principle applies to other radioactive waste streams. Medical facilities produce radioactive waste from imaging and treatment procedures. Research labs generate contaminated materials. All of these institutions face the same waiting game, watching the calendar until their waste is safe enough to dispose of. NSPS offers them an exit ramp from that waiting room. The Bottom Line For industries managing radioactive waste, NSPS offers a clear path to reduced costs. Less storage time means less money spent on facilities, security, monitoring, and compliance. For a sector where storage costs can run into millions of dollars annually, the technology represents a straightforward cost-benefit calculation. The key advantage of NSPS is that it works with natural processes, not against them. There's no need for high temperatures, harsh chemicals, or energy-intensive treatment. Install the system, let nature do its work faster, and collect the benefits in terms of time saved and costs avoided. The best way forward is to speed up the processes that are already happening in the ground. Interested? Learn more or find a licensed installer near you today!

Every day, invisible particles of antimatter pop into existence all around us, live for a fraction of a second, and disappear in tiny flashes of energy. It sounds like science fiction, but it's happening right now in the soil beneath your feet, in the walls of your house, and even inside your body. Exlterra's NSPS technology has figured out how to use this natural phenomenon to clean up radioactive contamination. Antimatter in Your Kitchen Bananas are radioactive. Not dangerously so, but they contain a naturally occurring form of potassium called potassium-40 that slowly breaks down over time. As it decays, it occasionally spits out a positron—a particle of antimatter that's basically an electron with a positive charge instead of a negative one. Your body does the same thing. You have potassium-40 in your tissues, and it produces about 4,000 positrons inside you every single day. Before you panic, understand that these positrons survive for less than a billionth of a second. They almost instantly collide with regular electrons, and when matter meets antimatter, both particles vanish in a tiny burst of energy. This process, called annihilation, happens constantly in nature. It's so reliable that doctors use it in PET scanners to see inside your body. They inject you with a substance that emits positrons, and when those positrons meet electrons in your tissues, they create gamma rays that cameras can detect. When Particles Collide So what happens during annihilation? When a positron finds an electron, they essentially cancel each other out. All the mass from both particles converts into pure energy—specifically, two bursts of gamma rays that shoot off in opposite directions. Each burst carries exactly 511 thousand electron volts of energy. Scientists see this 511 keV signature everywhere positrons exist: in space near black holes, inside nuclear reactors, and even in thunderclouds during storms. Places like Chernobyl are loaded with unstable atoms—things like cesium-137 and strontium-90. These atoms want to become stable, but they do it very, very slowly. Cesium-137 takes about 30 years just to lose half its radioactivity. At that rate, seriously contaminated areas remain dangerous for centuries. Scientists have long known that you can speed up radioactive decay by bombarding unstable atoms with high-energy particles. Particle accelerators do this all the time in labs. The problem is that particle accelerators are massive, expensive, and require enormous amounts of power. You can't exactly set one up in a contaminated field. Nature's Particle Accelerator Enter NSPS: Instead of building a machine to create high-energy particles, it creates conditions in the soil that concentrate and direct the positrons that are already there from natural radioactive decay. NSPS doesn't generate positrons. It doesn't need external power. Instead, it creates pathways and spaces in the soil where naturally occurring positrons tend to accumulate. These concentrated positrons then interact with nearby radioactive atoms much more frequently than they normally would. When you have a lot of high-energy positron annihilations happening near radioactive atoms, you increase the chances of those atoms breaking down. Each annihilation produces 511 keV of energy. That's not a huge amount, but it's enough to jostle nearby atomic nuclei. Do it enough times, and eventually, you can trigger decay in atoms that would otherwise sit around being radioactive for decades or centuries. It's like trying to knock over a wobbly table. One bump might not do it, but if you keep bumping it over and over, eventually it'll fall. NSPS creates a situation where radioactive atoms get "bumped" by energy from positron annihilations much more often than they would in normal soil. Once NSPS is installed underground, it just works. No maintenance, no power source, no chemicals. It's manipulating natural processes that were already happening—just making them happen more where you need them most. Think about how a funnel works. Water was already falling, but the funnel directs it where you want it to go. Positrons were already forming and annihilating, but now they're doing it in ways that help break down contamination, thanks to NSPS. Not Just Radiation The NSPS technology can be applied to address other types of pollution, too. Chemical contaminants often involve unstable molecular bonds that could also be disrupted by positron interactions. Heavy metals and industrial pollutants have structures that respond to high-energy particles, potentially offering new ways to break them down or transform them into less harmful substances through NSPS. NSPS bridges the gap between particle physics and practical environmental cleanup. For years, positrons were mainly useful in research labs and hospitals. The idea that you could use them to clean up contaminated soil is relatively new, but it doesn't require any new physics or speculative science. It's just using what we already know about how antimatter behaves, how positrons interact with regular matter, and how energy affects radioactive atoms. Exlterra's promising results in Chernobyl suggest we're only starting to understand what's possible when we work with nature's subatomic processes instead of against them. Interested? Learn more or find a licensed installer near you today!

Exlterra's Nucleus Separation Passive System (NSPS) represents an innovative approach to radioactive and chemical soil remediation, offering hope where conventional methods have fallen short. What Is NSPS? NSPS is a passive, energy-free system that targets contaminants at the atomic level, transforming harmful substances into safe, stable forms within the soil matrix. Traditional remediation methods rely on excavation, chemical treatments, or energy-intensive processes. NSPS works entirely through natural forces already present in the environment. NSPS uses pre-existing behaviors observed in particles like positrons to passively increase the occurrence of problematic material, such as radioactive isotopes, annihilating. This brings cleaner soils without any maintenance. The system is installed below the surface with minimal disruption, preserving existing vegetation and soil structure. Made from a durable, chemically neutral polyethylene blend, each unit ensures long-lasting performance and operates passively, requiring no energy or maintenance. The modular design allows customization for diverse environments, from heavily contaminated industrial sites to agricultural fields or landfills. In Situ Treatment: A Critical Advantage A key benefit of NSPS is that pollution is addressed in situ—contaminants are neutralized directly where they exist in the soil. This eliminates the need to excavate and transport contaminated material, avoiding the hazardous and costly logistics that plague conventional remediation approaches. By treating soil in place, NSPS removes the risks associated with moving radioactive or chemical pollutants through populated areas, while dramatically reducing project costs and timelines. This in situ approach also preserves the soil's natural structure and ecosystem, preventing the environmental disruption that typically accompanies excavation-based methods. Proven Results at Chernobyl Field tests at Chernobyl achieved a notable decrease in soil radioactivity, marking the first significant reduction in contamination levels at the site in over three decades. The stabilization process began immediately after installation, with noticeable reductions in contamination levels within the first year. These results are particularly remarkable because of the technology's completely passive nature. Once installed, the system requires no external inputs, chemical additives, or ongoing maintenance while continuing to work continuously beneath the surface. Beyond Radioactivity While NSPS gained recognition for its success at Chernobyl, the technology is also capable of neutralizing chemical pollutants, including PFAS (per- and polyfluoroalkyl substances), heavy metals, and other industrial contaminants. This versatility makes NSPS applicable to a wide range of contaminated sites, from former industrial zones to agricultural lands affected by chemical pollution. By leveraging soil's innate ability to capture and neutralize particles, enhanced by NSPS's unique configuration, the system provides a permanent, maintenance-free solution to previously intractable environmental challenges. The technology restores not just safety, but also the productive capacity of land, allowing contaminated areas to once again support ecosystems, agriculture, and human communities. Interested? Learn more or find a licensed installer near you today!

At Exlterra, we’re proud to be applying  GEPS (Groundwater Energy Passive System)  to solve real, persistent challenges in stormwater infrastructure — not just on golf courses, but in critical detention ponds that struggle with standing water. Two Key Installations, One Shared Problem We have recently completed GEPS installations in two very different contexts: Denver, Colorado  – on the premises of the Owens Corning roofing plant. Elevation:  Denver sits at approximately  5,280 ft above sea level. The detention pond at this site was frequently overflowing onto a road used by delivery trucks, disrupting operations and posing safety risks. Salisbury, Maryland  – within a 65,000-gallon detention pond on the premises of the  Maryland Department of Transportation, Motor Vehicle Administration (MVA) . Elevation:  Salisbury is nearly at  sea level , around  36 ft  above sea level. Despite being intended as a detention pond (not retention), water frequently stood there, defeating its purpose. The Challenge: Standing Water in Detention Ponds Both ponds suffer from the same issue: water remains stagnant long after rain, even though they were designed to drain. This persistent standing water can lead to: Mosquito breeding and associated health risks Odor problems Disruption to site operations (as seen in Denver) Regulatory risk and poor stormwater management Traditional fixes like pumps are expensive, energy-intensive, and require maintenance. GEPS offers a smarter, passive alternative. GEPS to the Rescue: How It Works GEPS is installed below the surface, without moving parts or electricity. Its key benefits for these detention ponds include: Faster Recovery After Storms:  Following a rain event, the ponds drain more quickly, minimizing downtime and overflow risk. Long-Term Reduction in Standing Water:  Over time, GEPS helps maintain lower average water levels — significantly reducing stagnant water periods. Passive, Sustainable Solution:  Unlike pumps, GEPS works with the natural subsurface to manage water, requiring no ongoing energy input. Real-World Impact In  Denver , GEPS helps avoid overflow on the plant’s access road — a major operational benefit. In  Salisbury , through subsurface infiltration and balanced redistribution, GEPS offers the only viable, low-impact solution (besides pumping) for managing the full 65,000-gallon capacity — particularly crucial given its extremely low elevation. A Model for Smarter Infrastructure These installations exemplify how GEPS can convert underperforming detention systems into efficient, environmentally sound assets. By retrofitting failing ponds, Exlterra is helping organizations like Owens Corning and the Maryland Department of Transportation: Reduce risk and liability. Cut down on maintenance and energy costs. Improve resilience and sustainability in stormwater management. Interested? Learn more or find a licensed installer near you today!

Exlterra is proud to announce the installation of GEPS on the first three greens at  Golf de Neuchâtel , marking the beginning of a full deployment across all 18 greens over the next two years. This partnership reflects the club’s commitment to sustainable, future-oriented course management and reinforces GEPS as a proven solution within the Swiss golf community. GEPS, our passive subsurface system, increases the  natural infiltration capacity  of soils and helps maintain an optimal moisture balance throughout the year. By enhancing the soil’s own ability to absorb, retain, and redistribute water, GEPS enables courses to achieve  an estimated 30% reduction in irrigation needs over time on greens —without any mechanical parts or maintenance. Knowledge Sharing and Field Demonstration During the installation, Golf de Neuchâtel hosted an  open day  for greenskeepers and representatives from neighboring clubs. The objective was to provide a firsthand look at the installation process and discuss real-world results from courses already equipped with GEPS. One of the highlights of the day was the presence of Norbert Daverat, the  greenskeeper from Golf & Country Club de Bâle , who has been using GEPS since our first installation there in 2023. He shared his positive experience, including: Improved infiltration and drainage Healthier, more resilient turf Enhanced playability after heavy rain Noticeable reduction in water usage His testimony reinforced what we have seen across installations in North America and Europe: GEPS delivers consistent, measurable improvements that benefit both course management and player experience. A Scalable, Proven Solution for Golf Courses Golf de Neuchâtel’s long-term adoption of GEPS reflects a growing movement among clubs seeking reliable, sustainable tools to address water management challenges. As climate variability continues to affect course maintenance, GEPS offers a  passive, long-lasting solution  that helps clubs stay ahead of increasing environmental and regulatory pressures. We look forward to completing the full installation over the coming two years and continuing to collaborate closely with the club’s management and greenkeeping team. Interested? Learn more or find a licensed installer near you today!

For the first time, a private vineyard has been planted in La Clusaz, France, thanks to the vision and determination of local resident  Fabien Merotto . Owning a piece of land at the foot of the Aravis mountains—and being a devoted wine enthusiast—Fabien wondered:  Could wine truly be grown at 4,000 feet in the French Alps? As both an engineer and the owner of a masonry company, Fabien lives by a simple rule: when faced with a question of feasibility, sometimes the only way to know is to try. With support from winemaker friends, he planted 300 vines in April 2023. He chose the  Altesse B  grape variety, believed to be best suited for La Clusaz’s demanding conditions. A total of 18 rows, spaced four feet apart, with 17 vines each, were carefully installed - but Mother Nature quickly reminded Fabien of the challenges of high-altitude viticulture. In spring 2025, mildew struck the private vineyard, and he lost 80% of his young vines, which were too fragile to resist the attack. Determined not to give up, Fabien looked for solutions. Learning about the remarkable results achieved with  NEPS  on the vineyards of  Stéphane Gros  in Geneva, Switzerland, he decided to bring the sustainable technology to La Clusaz. On a beautiful September day in 2025, our authorized French installer,  Setex Pro Paysage , installed the NEPS system in Fabien’s vineyard. With NEPS in place, nutrients will gradually rise to the root systems, strengthening the vines’ natural defenses and giving them the vigor needed to withstand the harsh conditions of the Alps. Fabien’s journey is only beginning, but his bold experiment could mark the start of a new chapter in high-altitude winemaking - and Exlterra is proud to support him every step of the way. Interested? Learn more or find a licensed installer near you today!

Golf courses worldwide are facing increasing challenges related to water conservation, climate extremes, and the need for sustainable outdoor spaces. The Royal Antwerp Golf Club (RAGC), Belgium’s oldest club known for preserving and nurturing its heritage courses, has once again raised the bar – this time, as the first golf course in Belgium to install Exlterra's GEPS (Groundwater Energy Passive System). This project materialized through a unique collaboration between Exlterra, the developer of GEPS technology, and Greenmix, its exclusive distributor and installer in the BeNeLux. Together with RAGC’s leadership, the team turned vision into reality. A Vision for the Future: RAGC’s Commitment to Sustainability RAGC has always prioritized innovative solutions that protect both the course and the surrounding environment. Anticipating increasing pressure on water resources, the club partnered with Greenmix and Exlterra to introduce GEPS technology. "Choosing GEPS was a strategic decision for the future of our club, Sustainability is not just a word, it’s an investment in resilience and excellence.” - Frédéric De Vooght, General Manager at RAGC. The GEPS Installation: Scope and Capability Over the winter season, Greenmix coordinated and executed the installation in close collaboration with Exlterra’s engineering team. The project covered nine fairways, carefully designed to maximize performance while minimizing disruption to play. Once in place, the GEPS system provided the soils with the ability to handle up to 307,450 cubic feet (8,706 cubic meters) of stormwater within a 24-hour period. With GEPS underground, the fairways became better equipped to capture, store, and redistribute valuable water resources naturally. A Natural Test: Dry Conditions Highlight GEPS Resilience In spring 2025, an extended period of dry and warm weather put the course under pressure. On untreated fairways, turf showed stress. In contrast, GEPS-equipped fairways remained green, healthy, and resilient. “During the extended dry spell, the difference was clear: GEPS kept fairways green and healthy while untreated areas showed stress. This technology is very promising.” - Barry Williams, Greenkeeper at RAGC. GEPS Success: More Than Just Infiltration This experience highlighted GEPS’s true strength: it is not only a stormwater infiltration system but a moisture-rebalancing technology. By passively lifting groundwater back to the turf’s root zone, GEPS sustained healthy turf during challenging periods without energy input or maintenance. “GEPS was designed to address water balance challenges worldwide, Seeing it perform so strongly at RAGC confirms the promise of this technology.” -- Frank Muller, CEO of Exlterra. Setting a New Standard for Belgian Golf By pioneering GEPS, RAGC has anticipated challenges to come and set a benchmark for Belgian golf. Thanks to the combined efforts of RAGC’s leadership, Exlterra’s innovation, and Greenmix’s expertise, this project proves that sustainable water management is achievable today. “At Greenmix, we are proud to bring breakthrough solutions like GEPS to Belgian golf, Supporting clubs with innovative water management is our mission.” - Dewi Merckx, Golf and Sports Turf Manager, Greenmix . As the impacts of climate change intensify, the RAGC story demonstrates that investing in passive water management is more than just environmentally responsible - it is the smart, resilient choice for golf’s future. Interested? Learn more or find a licensed installer near you today!

For more than 10 years, Exlterra has enjoyed steadfast support from the city of Hazel Park, maintaining a relationship that speaks volumes about the city’s commitment to forward-thinking businesses and sustainable solutions. Hazel Park recently went above and beyond by producing an independent documentary that captures our company’s mission to address stormwater management, advance water conservation, improve agriculture, and fight pollution. The documentary, a direct result of the city's enthusiasm for innovative environmental technologies and real-world solutions, showcases Exlterra’s origins and focus on improving the world around us. Why Exlterra chose Hazel Park Exlterra’s decision to call Hazel Park home came from several key strengths of the city: Hazel Park’s leadership fosters a spirit of collaboration and stands out for its genuine engagement with local businesses, and has maintained a  welcoming and supportive administration  through the years. The city’s proximity to I-75 and 696 makes it a prime business location that provides fast access across southeast Michigan, enabling efficient logistics and growth for Exlterra. Beyond its location, Hazel Park offers supportive programs and services that help companies thrive in a business-friendly climate . The residents and civic organizations here embrace forward-thinking initiatives , encouraging Exlterra to innovate in the environmental sciences. Hazel Park values partnership in advancing effective strategies for stormwater, conservation, agriculture, and pollution reduction – sustainability is a lasting priority for the city. The Documentary: Showcasing Exlterra’s History and Real-World Solutions The documentary produced by the City of Hazel Park illustrates not just Exlterra’s technologies, but our collaborative commitment to positive change. By shining a spotlight on our projects aimed at water conservation and the management of pollution, the film is an authentic celebration of Exlterra’s innovation and everything that led up to the sustainable solutions we deliver today. Interested? Learn more or find a licensed installer near you today!