ASTM's
Standard Test Method for Density of Soil in Place by the Drive-Cylinder Method
What is ASTM D2937?
This type of geosynthetic material is commonly used in landfills as a liner to prevent leachate from contaminating groundwater.
What is a geomembrane?
This is the primary gas released by landfills, which contributes to climate change if not properly managed.
What is methane?
This colorless, odorless gas produced by decomposing waste in landfills is monitored closely to prevent explosions.
What is methane?
This type of dense, impermeable soil is often used as a base and cover material in landfills to prevent liquid seepage.
What is clay?
Geotextiles are used in landfills to perform this function, separating different layers of waste and improving drainage.
What is filtration (or separation)?
This impermeable material lines modern landfills to prevent harmful substances from leaking into the soil and groundwater.
What is a synthetic liner (or geomembrane)?
OSHA mandates that a safe way to enter and exit a trench, such as a ladder or ramp, must be provided if the trench is deeper than this measurement.
What is 4 feet?
This mixture of soil and bentonite clay is often used as a substitute for natural clay in landfills to enhance impermeability.
What is a geosynthetic clay liner?
These geosynthetic materials are used to manage water flow in landfills, ensuring that rainwater doesn't accumulate in areas it shouldn't.
What are geocomposites?
These engineered systems collect and manage the liquid that seeps through landfill waste, protecting nearby soil and water.
What are leachate collection systems?
In landfill construction, soil stability is essential to prevent these sudden failures, where large sections of waste and soil shift unexpectedly.
What are slope failures?
ASTM D5856 specifies methods for measuring this important property of soil, which impacts fluid flow through compacted samples.
What is permeability (or hydraulic conductivity)?
Interface friction testing is crucial for designing these landfill structures to ensure stability between geomembranes and compacted soil.
What are landfill liners or cover systems?
Known as the world’s largest landfill before its closure in 2001, this site was located in New York City.
What is Fresh Kills Landfill?
Before construction begins, this analysis evaluates potential risks such as slope instability or nearby water contamination.
What is a risk assessment (or environmental impact assessment)?
Material used in landfills to minimize odors and deter pests.
What are daily cover soils?
Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (Proctor)
What is ASTM D698?
This type of geosynthetic material is used to reinforce the soil in landfill construction, helping to support heavy loads and prevent settlement.
What is geogrid?
The first modern landfill, equipped with a liner to prevent leachate contamination, was established in 1937 in this U.S. city.
What is Fresno, California?
This type of monitoring system is installed around landfills to detect gas migration and groundwater contamination.
What are environmental monitoring systems?
In soil classification, this term describes particles smaller than 0.075 mm in diameter, which significantly affect soil plasticity and permeability.
What are fine-grained particles?