Groundwater Artificial Recharge, Storage and Recovery

June 23-24, 2021 | Online ::

0621-groundwater-recharge

The new EUCI Groundwater Artificial Recharge, Storage and Recovery course will examine the purpose and practice of the ASR process as utilized by public groundwater systems. Aquifer storage and recovery (ASR) or Artificial Recharge (AR) is the placement of surface water supply like potable water, reclaimed water, or river water into an aquifer for future usage. The objective of artificial recharge is to restock water in an aquifer, and the practice is common in areas that have high population density with increased demand for drinking water, juxtaposition to concentrated agriculture, and limited ground or surface water accessibility.

Attend this  course to learn how aquifer storage and recovery (ASR) uses common techniques such as surface spreading, rapid infiltrations pits and basins, porosity reservoirs and injection wells to efficiently store water supply. Throughout the course attendees will discuss the benefits of implementing ASR, how to navigate geologic and hydrogeologic environments, hydraulic recharge and water quality considerations.

Learning Outcomes

• Discuss the underlying and fundamental principles of Aquifer Storage and Recovery
• Differentiate between geologic and hydrogeologic environments
• Identify and mitigate prospective challenges in operating an Aquifer Storage and Recovery process
• Examine the regulatory standards and considerations of the Artificial Recharge process
• Review case study approaches to incorporating and implementing ASR or AR processes

Wednesday, June 23, 2021 : Central Time

What is ASR?

• Placing water into groundwater storage (recharge)
• Multiple mechanisms to recharge groundwater
• Environmentally sound
  • No new dams on channels
  • Minimizes water loss
• Retime water use from time of supply to time of need, i.e., water management tool
• Managed aquifer recharge (“MAR”)

Purposes of Aquifer Storage and Recovery

• Supplemental water supply
• Maintain water levels/saturation
• Prevent or minimize saltwater intrusion

Geologic and Hydrogeologic Environments

• Types of geologic environments
  • Alluvial aquifers
  • Sedimentary bedrock
  • Karst
  • Volcanics
  • Precambrian
• Hydrogeologic environments
  • Unconfined aquifers
  • Confined aquifers
• Groundwater flow
  • Rate and direction
  • Vertical movement

Methods of Recharge

• Injection wells
  • Baski valve-positive pressure/prevent cavitation
  • Injection below water level
  • Maintain injection line well above pump-minimize air entrainment
  • Can be utilized in unconfined or confined aquifers
• Rapid infiltration basins
  • High permeability in RIB floor
  • Maintain head/minimize evaporative losses
  • Only applicable in shallow aquifers
  • Only applicable in unconfined aquifers
  • Understanding local unsaturated zone geology critical
  • Dominion and control more difficult
  • Ability to access for periodic tilling to maintain permeability
• Porosity reservoirs
  • Alluvial aquifers
  • Construct a low-permeability barrier wall around an area so groundwater flow in and out is minimized
  • Use area inside for aquifer storage
  • May be issues related to water rights
• Surface spreading
  • Low tech method
  • Apply to open land

Source water

• Location
• Amount
• Types
  • Surface water
  • Reclaimed water
  • Storm water
• Availability (direct use vs. storage)

Thursday, June 24, 2021 : Central Time

Recharge Geologic and Hydrogeologic Considerations

• Unsaturated versus saturated zone
• Unconfined versus confined aquifers
• Dominion and control

Hydraulic Recharge Considerations Related to Recharge

• Lateral versus vertical flow
• Dispersion of injected fluid
• Differential recharge to layers based on hydraulic conductivity
• Viscosity effects due to temperature gradients
• Density-driven flow
• Air entrainment

Water Quality Considerations Related to Recharge

• Geochemical compatibility between source and aquifer water
  • Geologic matrix
  • Physical considerations (temperature, DO, Cl, TSS)
  • Chemical (oxidation reactions/precipitation/encrustation/corrosion)

Water Recovery

• Similar to pumping native water

Capital and O&M Costs

Regulations and Compliance

• UIC-Class V/authorization by rule-aquifer storage component
• Extraction rules (i.e., recovery)
• Anti-degradation standard
• Monitoring
• Water quality sampling
• Reporting

Case Studies for Groundwater Artificial Recharge, Storage and Recovery

• Denver Basin
• Ogallala
• Florida

Bruce Lytle, P.E., President, Lytle Water Solutions, LLC.
BS, Civil and Environmental Engineering, Clarkson University
MS, Civil and Environmental Engineering, University of Colorado at Boulder
Registered Professional Engineer in Colorado (and eight other states)

Mr. Lytle has over four decades of experience in all types of surface and ground water resources related projects. Mr. Lytle was the Project Manager for a number of research projects into ASR in the Denver Basin, including the first ASR research at the Parker Water and Sanitation District and the Willows Water District. This initial research resulted in funding for the 6-yr research project under the Bureau of Reclamation’s High Plains States Ground Water Demonstration Project to evaluate the technical feasibility of ASR in a deep 1,800-foot sedimentary bedrock aquifer well, and also included assisting the Colorado State Engineer’s Office in the writing of the Denver Basin Extraction Rules. He has extensively studied technical, institutional, and economic issues associated with underground storage and recovery.

Mr. Lytle has also completed an ASR research project in Cheyenne, Wyoming in the unconsolidated sediments of the Ogallala aquifer for the Cheyenne Board of Public Utilities. This project evaluated recharge and recovery for both surface recharge through rapid infiltration basins and direct groundwater recharge via injection wells. Mr. Lytle is currently assessing quantity and quality issues related to recharge of treated wastewater effluent through rapid infiltration in an alluvial aquifer. This evaluation is being conducted by using a numerical groundwater model to assess groundwater magnitude and direction with recharge, and the subsequent fate and transport of the quality of the recharged effluent that mixes with the ambient groundwater in the alluvial aquifer. The model is being used to assess if there is any material injury to other vested water users in the vicinity of the recharge.

We will be using Microsoft Teams to facilitate your participation in the upcoming event. You do not need to have an existing Teams account in order to participate in the broadcast – the course will play in your browser and you will have the option of using a microphone to speak with the room and ask questions, or type any questions in via the chat window and our on-site representative will relay your question to the instructor.

• IMPORTANT NOTE: After November 30 you will not be able to join a Teams meeting using Internet Explorer 11. Microsoft recommends downloading and installing the Teams app if possible. You may also use the Edge browser or Chrome.
• You will receive a meeting invitation will include a link to join the meeting.
• Separate meeting invitations will be sent for the morning and afternoon sessions of the course.
  • You will need to join the appropriate meeting at the appropriate time.
• If you are using a microphone, please ensure that it is muted until such time as you need to ask a question.
• The remote meeting connection will be open approximately 30 minutes before the start of the course. We encourage you to connect as early as possible in case you experience any unforeseen problems.

REGISTER NOW FOR THIS EVENT:

Groundwater Artificial Recharge, Storage and Recovery

June 23-24, 2021 | Online

Your registration may be transferred to a member of your organization up to 24 hours in advance of the event. Cancellations must be received on or before May 21, 2021 in order to be refunded and will be subject to a US $195.00 processing fee per registrant. No refunds will be made after this date. Cancellations received after this date will create a credit of the tuition (less processing fee) good toward any other EUCI event. This credit will be good for six months from the cancellation date. In the event of non-attendance, all registration fees will be forfeited. In case of conference cancellation, EUCIs liability is limited to refund of the event registration fee only. For more information regarding administrative policies, such as complaints and refunds, please contact our offices at 303-770-8800

EUCI is accredited by the International Accreditors for Continuing Education and Training (IACET) and offers IACET CEUs for its learning events that comply with the ANSI/IACET Continuing Education and Training Standard. IACET is recognized internationally as a standard development organization and accrediting body that promotes quality of continuing education and training.

EUCI is authorized by IACET to offer 1.0 CEUs for this event.

Instructional Methods

This program will use PowerPoint presentations and open discussions.

Requirements for successful completion of program

Participants must log in each day and be in attendance for the entirety of the course to be eligible for continuing education credit.