Illinois EPA Grants Provisional Variance to City of Plano

SPRINGFIELD -- The Illinois Environmental Protection Agency will grant the City of Plano's request to complete the necessary construction to tie in new aeration tanks into the wastewater treatment system at a facility located at 1001 South Hale Street in Plano, Illinois.

 

The Agency has reviewed the requested provisional variance and has concluded the following: 1) The environmental impact from the requested relief is predicted to be minimal; 2) No other reasonable alternative appear available; 3) No public water supplies will be affected; 4) No federal regulations will preclude the granting of this request; and 5) The City will face an arbitrary and unreasonable hardship if the request is not granted.

 

This treatment facility consists of an activated sludge plant designed for 0.95 million gallons per day (MGD) design average flow and 1.67 MGD design maximum flow.  The City is in the process of improving its wastewater treatment capabilities with respect to nitrification and phosphorus removal. Treatment consists of automatic bar screening, aerated grit removal, flow equalization, aeration, final clarification, chlorination and dechlorination. 

 

The City is in the process of completing its 2004 Improvement Project (project) to expand and improve the treatment plant capabilities relating to nitrification and phosphorous removal.

 

In order to complete the Project the City must construct a new connection between the existing aeration tanks and the new aeration tanks.  While this construction is ongoing, one of the three existing aeration tanks will be taken out of service and short-circuiting may occur in one of the other remaining tanks.  The one aeration tank will be out of service for approximately 15 days.  After the necessary construction is completed, the existing aeration tank will immediately be brought back in service.

 

 

 

 

 

 

 

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