In the Southwest where water is
scarce and a critical commodity, aquifer storage and recovery (ASR)
is an essential part of water resource management. HSI's 37 years of
artificial groundwater recharge experience has proven that site
selection and recharge methods are dependent on hydrogeologic site
conditions. Our team of hydrologists, geologists, and
hydrogeologists are experts in evaluating, planning, designing,
overseeing construction, and operating all known recharge methods.
HSI's numerous projects in Arizona and California utilize spreading
basins, vadose zone recharge wells, direct injection recharge wells,
and ASR wells.
HSI supports developers,
municipalities, water companies, engineers, government agencies, and
Indian communities in developing new water supplies and expanding
existing water supplies to meet the demand of growing communities
throughout Arizona and Nevada. HSI is a leader in the use of the
Decision Support System (DSS) model as a practical evaluation tool.
The DSS independently evaluates the impacts associated with water
management decisions for developing, maintaining and forecasting
water resource supply for escalating population.
HSI guides clients through the
complex regulatory permitting process to obtain a wide variety of
water resource related permits including: Underground Storage
Facility (USF), Water Storage (WS), Recovery Well (RW), Groundwater
Withdrawal, Aquifer Protection (APP), Well Drilling/Notices of
Intent (NOI), and Well Abandonment. Other regulatory assistance
includes preparation of applications for Assured and Adequate Water
Supplies (AAWS), Applications for Membership in the Central Arizona
Groundwater Replenishment District (CAGRD), Hydrologic Reports for
Physical Availability Demonstrations (PAD), and preparation of
Arizona Department of Water Resources (ADWR) Annual Reports.
HSI uses groundwater flow models to
demonstrate the availability of current and future water supplies as
well as the impacts to aquifers from groundwater withdrawal and/or
groundwater recharge. HSI's technical capability goes beyond
building groundwater flow models to updating and validating existing
groundwater models, often at the request of State Agencies.
Well Rehabilitation and
Well Rehabilitation is often a cost
effective approach for extending well life. Rehabilitation includes
various methods such as chemical treatment, mechanical cleaning and
the innovative method called Aqua Freed. When the well's specific
capacity is reduced by 30%, rehabilitation is recommended. When well
rehabilitation is no longer effective, a well is contaminated or is
no longer of value then abandonment is recommended. HSI's
considerable experience in both rehabilitation and abandonment of
wells meet all of ADWR's guidelines.
Water Quality Evaluation
The quality of water is equal in
importance to availability. In addition to health concerns, water
quality impacts a wells' functionality, and ultimately the success
of the project. HSI's experienced staff collects water quality
samples during well construction, development and monitoring for
state agency requirements. The sample analysis and recommendations
are then documented through laboratory reports and geochemical