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Green Infrastructure

Green Infrastructure for Stormwater Management

Not Gray, Not Green, Right In Between

After transforming the Old Francisco Reservoir into a public park, the new Francisco Park overlooks some of the most famous views in the San Francisco Bay Area. This park combines Green Infrastructure with StormTech solutions for a more sustainable and cost-effective community space—all while helping manage stormwater and preserving the natural flora and fauna!

What Is Green Infrastructure?

Green Infrastructure (GI) is a complementary, alternative system to conventional (or “Gray”) stormwater solutions that mimic natural hydrology. It seeks to improve water quality and reduce water quantity by capturing runoff as close to the source as possible (i.e. where the raindrop falls) and infiltrating, filtering, detaining, or otherwise storing the runoff for reuse. Green Infrastructure Benefits include:

  • Environmental

  • Health

  • Economic Development

  • Energy Savings

  • Climate Change Resilience

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Key Benefits of StormTech + Green Infrastructure

When used together, StormTech chambers and green infrastructure offer the most cost-effective method to save valuable land and protect water resources. Together they allow for a design that both treats a required water quality volume, while also providing attenuation for peak flow volumes. Here’s why investing in GI for stormwater management is a smart choice:

  • Volumetric reduction of stormwater through infiltration
  • Improved stormwater quality through patented Isolator® Row PLUS
  • Reduction of thermal impacts
  • Proven, third party verified performance
  • Easily constructed, inspected and maintained
  • Meets ASTM product standard
  • Designed to ASTM & AASHTO specifications
Green Infrastructure construction site

StormTech + Green Infrastructure Applications

Here are some examples with StormTech:

Pervious pavement refers to paving methods for roads, parking lots, and walkways that allow the movement of water and air through the paving material.

Previous Pavement diagram showing how it works

Benefits of Using Pervious Pavement


  • May assist in groundwater recharge
  • Flood mitigation
  • Reduces runoff temperature


  • Pervious pavement limits surface water
  • No black ice
  • Reduces hydroplaning


  • Higher initial cost
  • Efficient land use
  • In colder climates, may save money on deicing salts

StormTech with Pervious Pavement

  • StormTech Chamber provides 100% void, increasing storage volume
  • Bare chamber volume allows increased storage
  • Enables the use of pervious pavement in areas with low soil permeability
  • Reduced footprint
  • Allows pretreatment in conjunction with Isolator Row

A rain garden is a shallow depression planted with suitable vegetation which is used to store and possibly treat stormwater runoff from impervious areas.

Rain Gardens and Bioretention diagram showing how it works

Benefits of Using Rain Gardens + Bioretention

  • Pollutant Removal – TSS, Phosphorous, Metals, Nitrogen, Hydrocarbons
  • Groundwater recharge
  • No standing water (proper design will allow water to infiltrate in a specified amount of time)
  • Preserve pre-development hydrologic cycle
  • Efficient land use & Aesthetics

Benefits of Using Rain Gardens + Bioretention

  • Increased storage capacity due to 100% chamber storage.
    • Enables the use of rain gardens in areas with low soil permeability.
  • StormTech system can act as an emergency overflow to the rain garden

A downspout is a pipe that directs stormwater runoff from the roof of a house to the ground.The StormTech chamber system can connect with roof downspouts for commercial and residential applications.

Downspout diagram showing how it works

Benefits of Redirecting Downspouts

  • Reduces the volume of water that enters the system
  • Replenishes groundwater supply
  • Filter out sediment and nutrients from the water to decrease pollutants in streams
  • Allows you to harvest the rainwater for reuse

Rainwater Harvesting is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to storage system.

Rainwater Harvesting diagram showing how it works

Benefits of Rainwater Harvesting

  • Cost effective
  • Conserves water
  • Acts as a source of water for landscape irrigation
  • Reduces soil erosion and pollution of water bodies
  • Simple and easy to install and operate

StormTech’s patented Isolator Row is a row of chambers wrapped in a geotextile which filters the stormwater trapping pollutants in the row.

Isolator diagram showing how it works

Benefits of Using Isolator Row PLUS

  • Improves stormwater quality
  • Achieves a removal efficiency of 80% for TSS which meets most municipal recommended levels for water quality treatment
  • NJCAT Verification Report