DBS&A Engineer Jennifer Hill, PE, will be presenting at the 37th Annual Tri-State Seminar (TSS) taking place in Las Vegas, Nevada, from August 8 to 11, 2022. Don Hanson, PG, and Geno Mammini, PG, from Geo-Logic Associates affiliate Clear Creek Associates LLC will be moderating the session on Groundwater/Recharge.
The TSS provides education to water and wastewater operators from the western United States for professional development, continuing education, and technology transfer to support the vision and missions of TSS’s partner organizations; AZ Water Association, California Water Environment Association and the Nevada Water Environment Association.
Ms. Hill will be presenting on the “Hopi Regional Water System: Planning, Design, and Construction.”
More on Ms. Hill’s presentation:
The Hopi Reservation is a Native American reservation, surrounded entirely by the Navajo Nation, in Navajo and Coconino Counties of Arizona. Hopi communities on First and Second Mesas in Arizona are served by groundwater wells that exceed the federal arsenic standards. Arsenic concentrations in the First and Second Mesa area range from approximately 13 ppb to 20 ppb. In 2020, the design for the Hopi Arsenic Mitigation Project (HAMP) was completed to include 4 storage tanks, 3 booster pump stations and 40 miles of piping to convey water from the Turquoise Trail wells to 4 public water systems at First and Second Mesas. Construction commenced on this project in April 2021 and was completed in June 2022.This presentation will discuss water quality challenges with groundwater wells in this area, the design of the water infrastructure, construction challenges, and provide an update on startup and commissioning of the regional water system, which will provide a reliable supply of safe drinking water to these rural native communities