What is Beneficial Reuse?
Transforming waste into opportunity.
Beneficial reuse gives qualifying foundry and abrasive by-products a productive second life. Instead of defaulting to landfill disposal, the right material can support construction, landscaping, and infrastructure uses.
Reuse sand
Finding safe, productive ways to repurpose industrial by-products
Reduce landfill waste, conserve precious natural resources, and spark local economic growth, all by making smart use of foundry sand. This valuable by-product, often overlooked, holds tremendous potential for more sustainable communities. Instead of letting spent foundry sand accumulate in landfills, innovative reuse practices are helping turn a waste stream into a vital resource.
By safely repurposing foundry sand into construction, landscaping, and infrastructure projects, you can help protect the environment while reaping economic and practical benefits. Reusing sand reduces the need to mine new natural materials, lowers disposal costs, and provides a reliable, quality resource for various applications. As more people and industries adopt sustainable approaches, these efforts contribute to resilient local economies and a cleaner environment, putting the power of positive change into your hands and your community.
Where qualifying material can go
Common reuse applications.
Concrete & Road Base
Replaces mined sand, strengthening infrastructure.
Landfill Cover
Acts as daily protective soil barrier.
Landscaping Soils
Mixed into manufactured soils for green spaces.
TCLP testing
What is the TCLP Test?
The Toxicity Characteristic Leaching Procedure (TCLP) is a critical laboratory test required by the U.S. Environmental Protection Agency (EPA) to determine whether a waste material, such as spent foundry sand, poses a risk to the environment or public health.
When waste materials are discarded or repurposed, there's a risk that harmful chemicals or heavy metals could leach out into the soil and groundwater over time, especially when exposed to rain or landfill conditions. The TCLP test simulates these real-world scenarios in a controlled lab environment to measure what substances might escape from the material.
- A sample of the material, such as spent foundry sand, is mixed with a mild acidic solution that mimics the chemical conditions found in landfills or natural rainfall.
- The sample is then soaked and agitated for a specified period to allow potential contaminants to leach out into the solution.
- Scientists analyze the solution to detect and quantify any hazardous substances, such as heavy metals like lead, arsenic, or cadmium.
If the levels of contaminants leaching out are below established federal limits, the material passes the TCLP test and is considered safe for reuse under environmental regulations.
If the material exceeds the limits, it is classified as hazardous waste and must be handled, treated, and disposed of following strict EPA hazardous waste management rules to protect communities and ecosystems.
Passing the TCLP test ensures that spent foundry sand can be confidently repurposed in applications such as construction, landscaping, or landfill cover without posing risks to drinking water, soil quality, or public health.
This rigorous testing process is a key step that balances industry needs and environmental safety, enabling beneficial reuse programs to thrive responsibly.
State-by-state guidance
Download reuse guidance for your state.
We've created easy-to-use guides for each state outlining the best practices and benefits of reuse sand.
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State Guides
Use the map or open a guide directly below.
If your state is not highlighted yet, ARS can still help you evaluate likely testing, reuse fit, and next steps.
Want to know if your material can move into reuse?
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