Wednesday, May 1, 2013: 2:15 p.m.
Regency West 5 (Hyatt Regency San Antonio)
City of Phoenix has successfully installed, developed and pump tested an 18-inch diameter aquifer storage and recovery (ASR) well with natural silica sand (mesh 6 x 9) and glass beads (Sigmund Lindner, Type S, 2.4-2.9 mm). Glass beads utilized as a filter pack media in water supply wells in Europe have demonstrated higher collapse strength, energy savings in pumping, and reduced clogging versus natural silica sand filter packs. Phoenix’s ultimate goal is to pilot these glass beads under recharge operations to determine the impacts to recharge operations (i.e., reduced backwash operations, duration and rates of recharge sustainable over time) and well clogging (i.e., duration and ease of unclogging the well).
The installation of these two filter pack types in the ASR well was to determine developmental and operational (pumping and recharge) difference. In this presentation, we will summarize development, pump testing, and spinner log activities and findings. Ultimately, we will be testing the long-term viable and potential cost savings of utilizing glass beads as a filter pack media in water supply and ASR wells.
| Gary M. Gin, RG , City of Phoenix | |
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Gary Michael Gin is the City Hydrologist for Phoenix, and is currently working on implementing and operating Phoenix’s first Aquifer Storage and Recovery wellfield. He received a bachelor’s degree in Geologic Science (with distinction) from Sonoma State University in California, and earned a master’s degree in Geological Sciences from the University of Nevada, Las Vegas. Gin is a Registered Professional Geologist in Arizona and Texas with 14 years of experience in water resource development, management, and optimizing wellfield operations. |
| Dave Wrozsek, RG , Clear Creek Associates | |
| Mr. Wrzosek is Senior Hydrogeologist with over 17 years of professional consulting experience. Mr. Wrzosek has developed a high level of expertise in various facets of large capacity water wells, including well impact analysis and permitting, well design, construction management, aquifer testing and analysis, production profile analysis, well rehabilitation analysis, discharge management and other logistical problem solving. Mr. Wrzosek has designed and managed numerous successful municipal production and aquifer storage and recovery (ASR) well projects for several municipal clients including the Cities of Phoenix, Scottsdale, and Mesa. B.S., Environmental Science/Applied Geology, Northern Arizona University, 1995. Arizona Registered Geologist, No. 45434. | |
