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===What is it?===

===What is it?===

[https://ecs-water.com/stormwater-management/filtration-media-solutions/ Bold & Gold] is a biosorption activated media (BAM) for pollution control developed by the Stormwater Management Academy at the University of Central Florida. It can be used to achieve [[nitrogen]] and [[phosphorus]] reduction in stormwater, wastewater and agricultural applications such as retention basins, [[swales]] and [[rain gardens]], urban gardens and [[soil cells]], [[permeable pavements]], [[green roofs]], [[filter strips]] and more. Bold & Gold is composed of a patented blend of mineral materials, sand, and clay.

[[File:Bold&gold.jpg|500px|thumb|Bold & Gold Filtration Media (Ferguson Waterworks, 2025)<ref>Ferguson Waterworks. 2025. Bold & Gold® Filtration Media. https://www.fergusonwaterworks.com/product/bold-gold-filtration-media//</ref>]]

[https://www.fergusonwaterworks.com/product/bold-gold-filtration-media// Bold & Gold] is a biosorption activated media (BAM) for pollution control developed by the [https://stormwater.ucf.edu/ Stormwater Management Academy at the University of Central Florida]. It can be used to achieve [[nitrogen]] and [[phosphorus]] reduction in stormwater, wastewater and agricultural applications such as retention basins, [[swales]] and [[rain gardens]], urban gardens and [[soil cells]], [[permeable pavements]], [[green roofs]], [[filter strips]] and more. Bold & Gold is composed of a patented blend of mineral materials, sand, and clay.

===How is it being used?===

===How is it being used?===

Bold & Gold Filtration Media is currently being used in experimental projects in North Carolina to evaluate nutrient reduction capabilities. No projects that used Bold & Gold were found in Ontario, however, it has been used for projects such as an upflow filter chamber following a detention pond, a commercial green roof in Florida, and a subsurface upflow wetland filter for nutrient removal. <ref>Stormwater Treatment Environments, LLC. Success Stories. http://greensmarts.com/success_stories.html. Accessed September 8, 2017.</ref> Filtration Media Specifications and Typical Cross Sections are provided on the Bold & Gold website.

*Bold & Gold was used to remove total phosphorus in an urban on-line up-flow [[Filtration|filter]] and an off-line filter in Florida (FDOT, 2014)<ref>FDOT. 2014. Demonstration Bio Media for Ultra-urban Stormwater Treatment. https://www.fergusonwaterworks.com/wp-content/uploads/2022/11/Demonstration-Bio-Media-For-Ultra-Urban-Stormwater-Treatment-1.pdf. Accessed August 2025.</ref>.

*It was also used in Florida in residential [[Vegetated swales|swales]] covered with native soil and sod to remove nitrogen and phosphorus from stormwater (FDOT, 2023)<ref>FDOT. 2023. Cape Coral North 2 Utilities

Expansion Project (UEP). https://www.fergusonwaterworks.com/case-study/cape-coral-north-2-utilities-expansion-project/</ref>.

Detailed drawings and product specifications are available [https://www.caddetails.com/main/company/viewproduct?productID=80416&companyID=5500&viewSource=Company%20Content&currentTab=Product here].

 

===Benefits===

===Benefits===

The results of a study by Hood, Chopra, and Wanielista provided promising results for the use of Bold & Gold for phosphorus removal. In field scale testing, Bold & Gold had a 71% removal efficiency of total phosphorus. This was compared to sandy soil which had many negative values, indicating significant leaching of total phosphorus from the sod. The average Soluble Reactive Phosphorus (phosphorus that is readily available to plants and algae) removal efficiency was 95%. Overall, the Bold & Gold system performed much better when compared to a sandy soil bio-filtration system. <ref>Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5:53-66. doi: 10.3390/w5010053.</ref>

The results of a study by Hood, Chopra, and Wanielista (2013) provided promising results for the use of Bold & Gold for phosphorus removal. In field scale testing, Bold & Gold had a 71% removal efficiency of total phosphorus. This was compared to sandy soil which had many negative values, indicating significant leaching of total phosphorus from the sod. The average Soluble Reactive Phosphorus (phosphorus that is readily available to plants and algae) removal efficiency was 95%. Overall, the Bold & Gold system performed much better when compared to a sandy soil bio-filtration system <ref>Hood A, Chopra M, Wanielista M. 2013. Assessment of Biosorption Activated Media under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 5:53-66. doi: 10.3390/w5010053.</ref>.

 

 

[[category:materials]]

[[category:materials]]

[[category:phosphorus]]

[[category:phosphorus]]

[[category:Water quality]]

[[category:Water quality]]