Geosynthetic and Containment Resources
Technical guides on liner materials, regulations, and installation practice from the EC Applications field team.
How a Double-Lined Pond Measures Its Own Leakage
A double-lined pond is not built on the idea that the top liner never leaks. It is built so any leak gets collected, measured, and held against a permit number.
The Floating Cover Market Is a Replacement Market Now
Every uncovered finished water reservoir in the country had to be covered, treated, or on a state-approved schedule by April 1, 2009. The covers that went on to meet that deadline are seventeen years old this year, and that is most of what has happened to this market since.
What Subtitle D Requires of a Landfill Final Cover
The permeability target for a landfill cap is not a fixed number in the rule. 40 CFR 258.
Why Geofoam Floats, and What Holds It Down
EPS22 geofoam weighs 1.35 pounds per cubic foot. Water weighs 62.4. A block below the water table pushes up with about 61 pounds per square foot for every.
Agricultural Liner Requirements: 30 Mil for Water, 60 for Waste
NRCS Conservation Practice Standard 521 sets the minimum HDPE thickness for an agricultural pond at 30 mil for clear water and 60 mil for wastewater.
Passive and Active Methane Mitigation Systems: What Runs Under the Slab
Methane mitigation systems use passive venting or powered extraction to control soil gas beneath buildings. ECA installs the membrane barrier.
Lagoon Liner Materials Compared: HDPE, LLDPE, RPP, and XR-5 in Exposed Service
Compare lagoon liner materials against wastewater chemistry, exposed edges, settlement, and installation details. Check the product and the full operating cycle.
Lining the Friant-Kern Canal: 160,000 SF of rPP on Subsided Federal Water Infrastructure
Land subsidence from groundwater pumping had cut the Friant-Kern Canal's capacity by up to 60 percent in places. EC Applications installed 160,000 square feet of 45 mil rPP as part of the repair.
How to Choose a Geosynthetic Liner Installer
Compare liner bids with rPP project photos, material-specific test questions and a free printable qualification worksheet with editable CSV.
Lining an 8 Million Gallon Concrete Reservoir from the Inside
50,000 square feet of 45 mil rPP bottom liner inside a 220 foot diameter concrete reservoir for the City of Wenatchee, installed as confined space work.
Relining a Potable Water Reservoir for El Dorado Irrigation District
The floating cover on an El Dorado Irrigation District potable water reservoir was some 30 years old and had exceeded its useful design life. EC Applications replaced the base liner and the cover, just under four acres of geosynthetics on a reservoir just under two acres.
Why Lagoon Liners Form Whales: Gas Uplift Under a Geomembrane
HDPE sheet is lighter than the water above it, so the only thing holding a lagoon liner down is the liquid on top. Gas underneath changes that arithmetic.
Installing a 600,000 SF Biogas Cover for Hawaiian Electric Company
In 2009, EC Applications installed a 600,000 SF biogas cover with over 150 sealed penetrations over an existing lagoon for Hawaiian Electric Company.
Hydraulic Short-Circuiting: How Baffle Curtains Restore Detention Time
Hydraulic short-circuiting lets the fastest water slip through a treatment basin in a fraction of its rated detention time, which is why disinfection credit.
Best Liner Materials for Heap Leach Pads, Ranked
HDPE is the best liner material for most heap leach pads, with LLDPE taking the floors where ore settlement governs and a GCL or compacted clay forming.
How to Choose a Geomembrane: A Material Selection Guide
Geomembrane selection comes down to five questions: what the liner will contain, what it will be exposed to, what it sits on, how it will be installed.
Heap Leach Pad Liners 101: How Pad Lining Works
A heap leach pad liner is a composite geomembrane system, typically 60 to 100 mil HDPE or LLDPE over a low-permeability soil layer, that contains process.
What Is a Methane Barrier? Gas Mitigation Basics
A methane barrier is a gas-impermeable membrane installed under a building's slab and against below-grade walls to block methane intrusion.
7 Questions to Ask Before Lining a Produced-Water Pit
Before lining a produced-water pit, nail down seven things: the permit requirements, the water chemistry, single or double liner, material and thickness.
Produced Water Pit Lining: Materials and Regulations
Produced water is the highest-volume waste stream in oil and gas, and a lined pit is often the most economical way to store it.
SPCC Secondary Containment Requirements Guide
If your facility stores more than 1,320 gallons of oil aboveground, the federal SPCC rule requires secondary containment that is sufficiently impervious.
Have a containment question?
Our estimators and field crews work with these materials every day. Send us your project and we will scope it.