• 6001 Broken Sound Pkwy NW
  • Suite 610
  • Boca Raton , FL 33487

Dual Zone Monitoring Well Installation

  • August 13, 2019
  • Globaltech

We are happy to announce the completion of our dual zone monitoring well project in Coral Springs, Florida. The Coral Springs Improvement District (CSID) operates two deep injection wells (DIW)s to dispose treated wastewater and concentrate reject from its membrane water treatment plant. DIW-1 was constructed in the 1970s and contains two integrated monitoring tubes. The sample tubes are used to collect representative groundwater samples to demonstrate to the regulatory authorities that the injected water is not migrating into potential drinking water production zones of the aquifer. The zones are sampled monthly with results reported to the Florida Department of Environmental Protection (FDEP).

In the past several years, the monitoring tubes have not been able to yield adequate flow to properly purge and produce representative samples. CSID entered into an agreement with FDEP to abandon the existing monitoring tubes and install a new Dual Zone Monitoring Well within 150 feet of DIW-1. Globaltech was selected to design and construct the new monitoring well.

Project Services & Improved Reliability

Globaltech teamed with Youngquist Brothers, Inc. and McNabb Hydrogeologic Consulting, Inc. to perform aspects of the project. The new monitoring well collects samples from two zones: the lower zone, which is approximately 2,100 feet below land and the upper zone, which monitors groundwater at a depth of approximately 1,850 feet.

The new monitoring well is equipped with a submersible pump for the lower monitoring zone while the upper zone flows under artesian pressure. The well is equipped with pad displays for pressure, flow, flow totalizers and a level sensor (in the lower monitoring zone) to aid in well purging prior to sampling. This information is also conveyed to the wastewater plant control room through a radio SCADA link.

The new system is all stainless steel and enclosed in weather resistant enclosures to provide maintenance free operation. The new well was brought into service and sampled for the first time to provide regulatory compliance in June 2019.