Sequestration

GROWTH MEDIA & SOIL ADDITIVES SEQUESTRATION

Series #

4700

HG 4710 - W HG 4720 - B HG 4730 - B

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With the ever-evolving nature of green infrastructure technology, new solutions to persistent problems continue to arise. In the search for high performance stormwater products, Hanging Gardens was also faced with the issue of water quality. Through exploration of new technologies, we found a solution that improves green infrastructure productivity by greatly increasing the quality of water re-entering local waterways.

H HG 4700 05/18

G www.hanging-gardens.com

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GROWTH MEDIA & SOIL ADDITIVES SEQUESTRATION Osorb - Water Treatment

Product #

4710

Green Glass™ “Powered by Osorb®” is a family of specialized silica-based medias used to extract organic contaminants from water. It is produced in over 30 varieties to meet your site’s specific needs. Common varieties include: • Standard: General water treatment • BioMix: Bioswales • IronMax: Brownfield remediation through in situ injection The raw product is dry, granular, odorless, hydrophobic, and non-flammable with variable grain size depending on the application. It can be packaged in sealed poly open-head drums, “Super Sacks”, or other specialty packaging based on site needs.

When contaminants in water and soils come into contact with Green Glass™ “Powered by Osorb®”, it captures them through hydraulic conductivity. The dirtier the site, the better it is able to perform. As the product absorbs, it swells, trapping pollutants indefinitely with zero incidence of leaching.

Green Glass™ “Powered by Osorb®” was engineered with the support of the National Science Foundation. It offers an innovative and enduring solution for remediating contaminated brownfields, bioswales, stormwater runoff, creating pretreatment zones adjacent to stormwater sewers or waterways, and other specialty water treatment challenges.

EFFECTIVENESS OF OSORB® TO A VARIETY OF DISSOLVED SUBSTANCES

HG 4710 05/18

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GROWTH MEDIA & SOIL ADDITIVES SEQUESTRATION

Osorb - Brownfield Remediation

Product #

4720

The status quo for brownfield redevelopment has traditionally been the soil capping method. While effective, the problem of contaminated soil still remains below the surface of the cap. Future development or disturbance could breach the cap and return the site to a state of noncompliance with environmental regulations. Oxidizer treatments have also been utilized to essentially “burn out” contamination within soils, at the expense of sub-surface biology. Oxidizers may also fail to provide performance in treating contaminants that continue to leach into surrounding groundwater over time. In situ injection is the most common method of using Green Glass™ “Powered

by IronMax-Osorb®”, directly targeting contaminant plumes through a carefully crafted remedial action plan.

Green Glass™ provides an enduring solution, trapping contaminants indefinitely or actually breaking them down when “Powered by IronMax-Osorb®” is used. While oxidizers may provide a stopgap means to regulatory water testing, Green Glass™ remains in the soil to trap and/or reduce contaminants that eventually leach out.

In addition, Green Glass™ “Powered by IronMax-Osorb®” continues to break down contaminants internally within its structure to prevent the production of potentially harmful secondary products.

Rather than leaving environmental problems for future generations, Hanging Gardens utilizes Green Glass™ to improve site conditions today.

Tiered pricing based on project scope

Special slurry for in-situ injection

TECHNICAL DATA Use / Installation Method: • Green Glass™ “Powered by Standard or IronMax-Osorb®” is applied via in-situ injection or site-specific alternate methods.

• Standard Osorb® is injected in staggered lines to create a “curtain” that prevents contaminants from migrating.

• IronMax-Osorb® is injected into hot spots and surrounding areas to capture and reduce chlorinated contaminants.

HG 4720 05/18

Contaminants Captured: • Refer to chart on HG 4710

Green Glass™ “Powered by IronMax-Osorb®” Blends: • Contains zero-valent iron (ZVI)

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GROWTH MEDIA & SOIL ADDITIVES SEQUESTRATION

Osorb - Bioswale Application

Product #

4730

Green Glass™ “Powered by BioMix-Osorb®” enhances the effectiveness of bioswales, right-of-way bioswales (ROWB), bioretention ponds, filter strips, green roofs, and many other green infrastructure and LID systems by remediating common runoff contaminants from stormwater. Green Glass™ “Powered by BioMix-Osorb®” enhancements will protect soil biology from harmful contaminants, enhancing any standard bioswale’s ability to process nutrients, and increasing plant growth and swale robustness.

Unenhanced bioretention systems are natural buffers that capture stormwater above ground using specialized soils and plants, preventing contaminated water from reaching sewers and local waterways. Green Glass™ enhanced stormwater solutions go a step further by using absorptive and reductive soils to capture and breakdown common stormwater contaminants. As a result, Green Glass™ stormwater solutions not only capture stormwater and reduce peak volume, but also remediate a significant amount of persistent contaminants and send a cleaner effluent back into the environment.

Green Glass™ “Powered by BioMix-Osorb®” provides a new age solution for high performance green infrastructure, higher water quality standards, and a cleaner environment.

Tiered pricing based on blend & quantity

Sealed poly open-head drums Special packaging available on request

TECHNICAL DATA Use / Installation Method: • Green Glass™ “Powered by BioMix-Osorb®” is mixed at the specified percentage (usually 1-3%) with the soil. The BioMix-Osorb® enhanced soil is a layer 6” thick located 4-6” below the surface Contaminants Captured: • Refer to chart on HG 4710 Typical Active Life: • 8-10 years Typical Reductions: • Phosphate: 90% • Nitrate: 70-80% • Atrazine: 99% • 2,4-D: 99% HG 4730 05/18

Green Glass™ “Powered by BioMix-Osorb®” Blends: • Contains zero-valent iron (ZVI) for reduction of captured contaminants. It can also be provided with other infused materials to target specific contaminants.

Performance Enhancement: • Green Glass™ “Powered by BioMix-Osorb®” provides a significant improvement to bioswale and other green infrastructure performance. It extracts a wide range of toxic compounds from stormwater, especially during the “first flush” when rain washed accumulated hydrocarbons, pesticides, herbicides, and pharma compounds from roofs and paved surfaces. BioMix-Osorb® allows

natural biological processes to operate more efficiently.

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