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Technical guides on liner materials, regulations, and installation practice from the EC Applications field team.
A lagoon liner spends its whole service life open to the sky, which is why UV exposure and the freeboard band decide the material more often than the wastewater does.
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.
Liner systems almost never fail because of the sheet. They fail at seams, penetrations, and subgrade. That is why installer selection, not material selection, decides how a containment project performs.
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.
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.
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.
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 lets the fastest water slip through a treatment basin in a fraction of its rated detention time, which is why disinfection credit.
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.
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.
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.
A methane barrier is a gas-impermeable membrane installed under a building's slab and against below-grade walls to block methane intrusion.
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 is the highest-volume waste stream in oil and gas, and a lined pit is often the most economical way to store it.
If your facility stores more than 1,320 gallons of oil aboveground, the federal SPCC rule requires secondary containment that is sufficiently impervious.
Our estimators and field crews work with these materials every day. Send us your project and we will scope it.