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Praxair Parking Lot, Burr Ridge, IL – Groundwater Seepage Control

The main parking lot at Praxair's Burr Ridge facility was experiencing steady upward flow of groundwater through the parking lot. This was causing a severe maintenance problem of slippery algae in the summer and icing conditions in the winter. Significant quantities of salt were needed to keep the parking lot safe for the employees. The parking lot was severely deteriorated and was only a few years old.

Bono Consulting was retained to investigate the site and develop an affordable engineering solution. The final solution included installing a series of rock filled collection trenches or "French Drains" under the parking lot and connecting the new perforated drain tiles from the French Drains to the site storm sewer system. Bono Consulting provided site investigation, detailed engineering design for the groundwater collection system and new parking lot, and construction oversight and material testing during the work.

Project status: Work was completed in 2011 and groundwater seepage up through the parking lot has been effectively controlled.