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Selection and Testing of Tracers for Measuring Travel Times in Groundwater Aquifers Augmented with Reclaimed Water

Principal Investigator and Project Manager
Wontae Lee, Ph.D., P.E., HDR Engineering, Inc.

The primary objective of this project was to identify, select, and test environmentally acceptable tracers for measuring travel times of reclaimed water and its constituents in recharge systems. The secondary objective was to develop a protocol for conducting tracer tests on recharge systems that are augmented with reclaimed water.

The project included the following major activities: 1) compare and select tracers for recharge systems augmented with reclaimed water, 2) evaluate the performance of tracers in three common recharge systems (recharge basin, vadose zone recharge well, and direct recharge well), and 3) develop a protocol for conducting tracer tests in recharge systems.

This research report provides a summary of the literature related to conservative and surrogate tracers for reclaimed water constituent transport in the subsurface, the materials and methods used for evaluation of tracers, the results from tracer experiments on three common recharge systems augmented with reclaimed water, and information on the process for regulatory approval of the use of tracers for reclaimed water recharge systems and of field methods for conducting tracer tests.
(2009, 74 pages, 05-007-1)

Member price: 25.00
Foundation subscriber price: 15.00
Non-member price: 45.00