Yamabe & Horn designed a water reclamation system to help reduce the environmental impact of the Grundfos facility in Fresno, California. Given the advanced strategies implemented in the project, Yamabe & Horn had to juggle coordination with City of Fresno Public Works & Water Division, Fresno Irrigation District and the Fresno Metropolitan Flood Control District (FMFCD) to get the project completed.
In 2009 Grundfos, the world’s largest pump manufacturer based in Denmark, embarked on a mission to reduce their water usage across the company by 50% by 2025. They also wanted to improve the quality of discharged water from their facilities to achieve zero impact on the surrounding environment.
The management at their Fresno facility approached Yamabe & Horn to discuss the low to moderate water use landscaping Y&H had installed in their new building in 2009, which led to a larger discussion about the entire project. More information from Grundfos regarding the project can be found here.
The Grundfos facility in Fresno has significant roof and parking lot surface area that channeled rain water into a FMFCD pipeline adjacent to the property. Reclaiming that rain water would become the primary source of irrigation for the new low- to moderate-water-use landscaping around the property.
Given the innovative culture at Grundfos, Yamabe & Horn was able to propose a solution that was unconventional for private enterprise, but has been utilized by municipal clients they have worked with for decades. The core feature of the water reclamation system was a 2.5MM gallon lined storage pond that would be created onsite.
The challenge with utilizing the storage pond occurs in the summer months as Fresno is a very arid and dry climate with little to no rainfall then. To solve this issue, Yamabe & Horn worked with the Fresno Irrigation District (FID) to permit the construction of a turn-out from the FID pipeline that was adjacent to the storage pond in order to fill the pond with non-potable water during irrigation season.
The system was designed to fill the bond by gravity, but to permit no overflow in the event of an operator error. Three Grundfos pump stations were designed by Yamabe & Horn and installed throughout the property to move water into and out of the ponds. They are all controlled wirelessly to allow for easy management, too.
Yamabe & Horn also coordinated with Grundfos engineering staff as they established a very powerful monitoring and recording system to track data generated throughout the entire reclamation system.