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Pool FAQ

Below are answers to several frequently asked questions about the pools at Hinsdale Central and Hinsdale South. This page will be revised when new information and/or updates become available. 

CENTRAL POOL
What is happening with the pool tile deck?
What is causing the temperature and humidity regulation issues on the pool deck?
What is causing the temperature and humidity regulation issues in the spectator seating area?
Are there any concerns related to chlorine, chemicals, or environmental effects on the swimmers?

SOUTH POOL
What is happening with the pool tile deck?
Is air quality testing being completed at South?

Executive Summary - Hinsdale Central and South Pool Repairs

  • Pool deck tiles for Central are scheduled to be replaced in the summer of 2024 and South in the summer of 2025.

  • HVAC system on the pool deck at Hinsdale Central is being monitored and will be rebuilt in summer 2024.

  • HVAC system in the spectator area at Hinsdale Central does not need repair; however, an engineer is addressing humidity and air circulation issues.

  • Water and air quality at Hinsdale Central have been tested; the district is working on ventilation modifications. 

  • Board of Education formed a Special Pool Task Force composed of stakeholders from local club and high school swim programs, as well as community members who served on the original referendum Special Committee.

CENTRAL POOL

What is happening with the pool tile deck?
Following completion of the pool, the tile deck tented and cracked. After multiple unsuccessful attempts to remediate the issue, the district contracted with Wiss, Janney, Elstner Associates, Inc. (WJE) to investigate the root cause(s) of the floor's failure. WJE provided the district with its investigation report in July 2023, which identified multiple issues with the original design and installation of the floor. After reviewing the report, a notice of defect was issued to the district’s architect and construction manager demanding the full replacement of the pool tile deck. No repairs will need to be made to the men’s and women’s locker rooms. The district will not incur any cost in conjunction with the replacement of the pool tile deck. All costs associated with the replacement of the floor, including the investigation and legal fees, will be paid by the architect, construction manager and contractor. 

The Facilities Committee and the Special Pool Task Force worked with the district architect, construction manager, and WJE to evaluate a new floor system. At the February 9, 2024, Facilities Committee meeting the proposed design was approved and direction was given to submit for an IDPH permit and begin procurement. The pool is scheduled to be shut down on May 1, 2024, and be up and running again prior to the start of the girls’ swim season in fall 2024.

What is causing the temperature and humidity regulation issues on deck?
The new Dectron (Dehumidification) unit has experienced multiple warranty issues since being installed two years ago. 

Timeline of control/comfort concerns on the pool deck area

August 2021 - School staff/administration indicated comfort concerns in the spectator areas shortly after the project’s substantial completion. An investigation began with the manufacturer.

January - March 2022 - Investigation/troubleshooting of pressurization and condensation.

May 2022 - Repairs made to damaged distribution ductwork.

August 2022 - Staff/administration reported additional concerns.

October 2022 - Identified and repaired damage to the return air ductwork (concealed within a shaft).

November 2022 - Adjustments made to the Building Automation System (BAS) for the spectator HVAC unit in order to address comfort concerns in the spectator area. Standalone room temperature and humidity sensors were installed by the district. 

March 2023 - Repaired leak in the compressor refrigeration.

May 2023 - Final equipment inspection and air balancing of the Dectron unit. Work done on an extended warranty. 

September - October 2023 - Failed compressor, control board and exhaust fan were replaced and a spare compressor was left onsite in the event of future failure. Dectron provided a proposal to the district to rebuild the Dectron unit. This proposal was evaluated by the Facilities Committee and Special Pool Task Force.

October 2023 - November 2023 - Dectron conducted a root cause analysis on the current unit that was completed in December of 2023. After completion of the root cause analysis, the district administration and the construction team met with Dectron to assess a unit rebuild option and a unit replacement option. These options were presented to the Facilities Committee and Special Pool Task Force on February 16, 2024. At a special Facilities Committee meeting on March 1, 2024, the Committee gave direction to move forward with rebuilding the dectron unit. The rebuild option was selected since it provided extended warranties, additional inspections, and will be completed at no cost to the district. 

What is causing the temperature and humidity regulation issues in the spectator area?
There is a separate HVAC unit that controls the temperature in the spectator seating area. The district engaged Millies Engineering Group to review the design of the system, determine if the system is performing as designed, and make recommendations that would improve the overall comfort in the space. Millies Engineering Group reviewed the HVAC system that controls the environment in the spectator space and recommended increasing the outside air damper to bring in more outside air and to add supply registers to the supply air ducts. 

Are there any concerns related to chlorine, chemicals, or environmental effects on the swimmers?
The pool vessel and equipment passed the Illinois Department of Public Health’s (IDPH) final inspection in August 2021 prior to opening. Water quality testing is required to be performed on disinfectant residual and pH at least twice a day from the shallow and deep areas of the pool. Combined chlorine is tested on a weekly basis. 

The district’s environmental services consultant completed air quality testing in December of 2023. The testing indicated levels of airborne trichloramines above reference levels established by the World Health Organization (WHO) and water testing showed chloramine levels above the Illinois Department of Public Health (IDPH) standard. The report provided recommendations to review the ventilation of the natatorium, evaluate water testing procedures, institute a requirement to shower before entering the water, and retest the space after any identified modifications have been implemented.  

Millies Engineering Group completed an evaluation of the ventilation for the natatorium space and provided their findings and recommendation to the Facilities Committee and the Special Pool Task Force at the February 16, 2024, meeting. The recommendations include: redirect supply air registers, run exhaust fans 24/7 to maintain negative pressure, rebalance return registers to design parameters, decrease supply air flow to pool equipment room to create negative pressure, repair a failed CO2 sensor, add a pool water temperature sensor, and keep building doors closed to maintain negative pressure. The district is working to implement these recommendations as quickly as feasible. Some items will not be able to be addressed until the pool is closed after May 1. 

Additionally, the district did review the water testing results with the engineering firm and the pool chemical supply company. The district also reviewed the daily testing procedures with the environmental services consultant. The district has increased chloramine testing frequency from weekly to daily. All daily chloramine tests have shown values within IDPH guidelines.

SOUTH POOL

What is happening with the pool tile deck?
Following completion of the pool, the tile deck experienced issues with cracking tiles. The issues were not nearly as pronounced as at Central; however, after reviewing the Central investigation report, the district engaged WJE to complete a review of the South pool tile deck due to the similar design. WJE provided the district with its investigation report in September 2023, which identified issues with the original design and installation of the floor. After reviewing the report, a notice of defect was issued to the district’s architect and construction manager demanding the full replacement of the pool tile deck. The Facilities Committee and Special Pool Task Force are currently reviewing the investigation report, evaluating design modifications and assessing the bidding process. No repairs will need to be made to the men’s and women’s locker rooms.

The district will not incur any cost in conjunction with the replacement of the pool tile deck. All costs associated with the replacement of the floor, including the investigation and legal fees, will be paid by the architect, construction manager and contractor. The current timeline calls for the pool to be shut down in early May of 2025 so that work on the floor can begin. The pool is scheduled to be up and running again prior to the start of the girls’ swim season in fall 2025. The timeline will be reviewed after the completion of the Central pool this summer to determine if any changes are needed to the schedule. 

Is air quality testing being completed at South?
Yes. The district is currently coordinating a time with the environmental services consultant to complete testing at South.