48/Plumbing Engineer February 2019
are increasing across the nation. Designers, contractors, system vendors and managers all benefit from the founda- tion set by ARCSA/ASPE/ANSI Standard 63. ARCSA now offers professional certification training thanks to a new partnership with the American Society of Sanitary Engineers (ASSE). Rainwater harvesting training workshops are now prerequisites for the ASSE Series 21000 Rainwater Catchment Systems Personnel Certifications and are combined with training at local UA training facilities and the installation of demonstration rainwater and greywa- ter re-use systems. l Dave Stark, of Rainwater Management Solutions, is an accredited professional of the American Rainwater Catchment Systems Association. Systems designed for integrated year-round use, inside and outside of the facility, often have the best possibility of providing a cost-effective solution and offsetting other water main or stormwater infrastructure costs. Stormwater treatment devices, such as hydrodynamic separators, while being part of a treatment train to meet stormwater water- quality requirements, may not provide the treatment nec- essary to achieve strict water-quality compliance after treatment. If pretreatment devices allow high water bypass flow to enter a tank, designers should consider the resulting water quality impacts in the tank along with the associated tank-cleaning maintenance. The best rainwater harvesting- specific prefiltration devices do not allow high-flow water to bypass the filters and remove particulates greater than 1,200 microns as defined in ARCSA/ANSI Standard 63. This bypass flow is easily addressed with other stormwater infrastructure on site. The rainwater system vendor provided the Allianz Field system startup and training for the installing mechanical contractors, owners' representatives, city and watershed staff before system shutdown in the fall of 2018. The sys- tem was winterized and will be re-started in the spring of 2019 when the first game will be played. Rainwater harvesting systems - whether implemented for water supply, stormwater control or a combination -
Rainwater
For further information: St. Paul's rainwater catchment page: https://bit.ly/2z9eMOZ Allianz Field stats from Mortenson: https://bit.ly/2BokEU8 Fast facts: https://www.mnufc.com/stadium/fast-facts Monitor article on the stadium: https://bit.ly/2F6qzzX MinnPost article: https://bit.ly/2DjFBPY
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