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High-performance fields start underground

All-in-one rainwater absorption, turf hydration, and soil regeneration. No pumps. No energy. Powered by Exlterra GEPS.

Because the real game is played underground

High-performance fields fail for one reason: water mismanagement. Too much water suffocates roots; too little stresses turf. GEPS restores natural soil balance instead of fighting symptoms.

This system works without pumps, energy, or ongoing maintenance. It integrates with existing drainage and irrigation infrastructure. Once installed, the ground regulates itself. Permanently.

Close-up of a white line marking on the ground of a sports field | Sam Gash
View of a baseball stadium, its field and stands at sunset | Sam Gash

This is why GEPS installations by Sam Gash change the game.

Rainwater absorbed 10 times faster*

Firm and usable fields all year round*

Watering needs reduced by 50% or more*

Zero maintenance, zero energy consumption

The only underground system that does three jobs at once. And never needs maintenance.

Cross-section of Exlterra GEPS technology | Sam Gash
The number 20 marked on the grass of a sports field | Sam Gash
Golfer preparing to swing | Sam Gash
Golf club and ball on turf | Sam Gash

Golf greens

Greens and fairways demand precision, not compromise. GEPS stabilizes soil moisture, improves root depth, and reduces surface stress. The result is consistent playability, fewer closures, healthier turf year-round.

A footballer's feet while dribbling | Sam Gash
American football on turf | Sam Gash

Football & soccer fields

Football and soccer destroy weak soil long before it destroys grass. GEPS reinforces the ground structure and keeps moisture where roots need it. Stronger turf. Faster recovery. Fewer failures during the season.

Spectators in the stands of a stadium watching a match | Sam Gash
Baseball glove with baseball field in the background | Sam Gash

Baseball fields

Baseball fields rely on consistency across infield, outfield, and base paths. GEPS stabilizes the soil profile, improves vertical drainage, and preserves oxygen in the root zone. The surface is firmer, more uniform; it recovers faster after rain, and needs fewer maintenance.

Athlete ready to start a race | Sam Gash
View of a sports complex from the stands | Sam Gash

Sports complexes

Multiple fields mean multiplied maintenance risk and cost. The Exlterra GEPS technology standardizes underground performance across all surfaces. Less intervention, predictable conditions, long-term operational control.

Built for elite surfaces. Proven across disciplines.

White line on a footbal field turf  | Sam Gash
Portrait of Sam Gash | Sam Gash
NFL fullback Sam Gash | Sam Gash

Meet Sam Gash

Built in elite performance environments. Driven by work ethic, discipline, and precision. From professional football to high-performance fields, the standards never changed.

Problems we solve

GEPS is also used in playgrounds, parks, landscaped areas, and infrastructure zones where standing water, compaction, or unstable soil limit usability. The mechanism remains the same. The surface changes.

Greenkeeper watering a golf course | Sam Gash

Water conservation and irrigation

Reduce your watering needs while maintaining soil health

Urban area | Sam Gash

Low impact development (LID)

Sustainable strategy for water infiltration, reducing heat and strain on drainage networks

Reclaimed golf course | Sam Gash

Floodable sports fields and golf courses

Make your grounds firm and playable quickly after rain

House cracked by clay shrinkage and swelling | Sam Gash

Shrink-swell phenomenon

Limit cracking and subsidence by stabilizing the moisture content of clay soils

Damp basement | Sam Gash

Damp basements and hydrostatic pressure

Solve foundation moisture problems without drains or pumps

Private garden | Sam Gash

Waterlogged gardens and green spaces

Restore healthy soil without visible drains

Dry, cracked soil | Sam Gash

Groundwater recharge

Store water in the soil, naturally and sustainably

Flood-prone parking lot | Sam Gash

Flooded parking lots and plazas

Eliminate puddles without overloaded storm drains

Landslide-prone embankment | Sam Gash

Slopes and embankments prone to erosion

Stabilize your soils by reducing saturation and runoff

Muddy country road | Sam Gash

Muddy paths and roads

Ensure the load-bearing capacity of your driveways without heavy drainage

Dry equestrian arena | Sam Gash

Equestrian arenas and quarries

Reduce your watering needs by 50% while maintaining a supple and stable soil

Clear installation process

Rapid remote study (48–72 hours)

Technical visit and installation plan

Quick installation (10-20 days)

On-site monitoring and adjustments

Image by Neringa Normantaite

Nouvelle technologie GEPS

Pluies absorbées dix fois plus vite*

Sols stabilisés en profondeur*

Besoins en arrosage divisés par deux*

*Performances maximales constatées sur les installations GEPS contrôlées. Les résultats peuvent varier selon les contextes technique et naturel.

Tailored financial solutions

We offer tailored financing solutions with our partners. The return on investment is achieved simply by saving on maintenance costs and reducing downtime for play and watering.

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