CENTRAL HEATING PLANT, CHICAGO, ILLINOIS

Project Manager and Lead Mechanical Engineer for the replacement of five (5) existing 20,000 gallon underground storage tanks USTs with three (3) 35,000-gallon USTs compliant with the 1998 Fire Marshall design standards. The UST and associated ancillary equipment was designed so each of the three USTs could supply fuel to any of the five boilers at the facility. The existing manual valves were replaced with pneumatic actuated ball valves controlled from a programmable logic controller (PLC). Junction boxes providing secondary containment were installed at all locations where double-walled plastic piping used outside the heating plant was connected to single-walled steel piping required inside the heating plant. A remote fill station with locking hatch cover was designed and installed so any UST could be filled from one (1) location. Other engineering activities included the design of concrete pads, asphalt paving, an improved lighting and UST alarm system, and an upgrade to the PLC.

Prior to the installation of the new UST a leaking UST was removed and the soil impacted by the release from this tank was excavated and disposed off-site. Shoring was installed to reduce the amount of soil removed and groundwater pumped from the excavation was treated using activated carbon prior to discharge to the municipal sewer system.

The installation of the new USTs was performed in two phases so the Heating Plant had fuel oil available at all times. The removal of the existing tanks and installation of the new USTs required the installation of shoring and use of dewatering pumps due to the proximity of the water table. A storm sewer serving the area was rerouted to accommodate the new USTs. Over-excavation of the area for the new USTs was necessary to remove unstable soil and replace it with load bearing material. The first phase of the new UST installation was completed and the system made operational prior to the December 22, 1998 deadline.

During the removal of the second set of existing USTs a major fiber optic cable was encountered within two feet of the existing USTs. Approximately five feet of each existing UST was cut and remained in place to protect the fiber optic cable. The new UST was then placed into the reduced area of the excavation.

ABOVEGROUND TANK INSTALLATION, EVANSTON, ILLINOIS

Mr. Smith served as the Project Manager and Design Engineer for the replacement of a UST serving an electric generator. He prepared specifications for the removal of an existing UST and replacing it with an aboveground storage tank. The existing UST was removed to minimize disruptions to the facility. Mr. Smith prepared the design of the new aboveground storage tank system. The new tank was located in a confined space but complied with all of the state and municipal design requirements.


UNDERGROUND STORAGE TANK REMOVALS, VARIOUS LOCATIONS

As Manager of Environmental Engineering for a major healthcare supply manufacturing company, inventoried the USTs at more than 30 locations. A major function of the inventory was to prioritize the USTs removals to minimize disruptions to manufacturing operations.

 

Project Experience continued . . .

 

 

 

 

 

 

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