GENEVA – Aldermen on Tuesday approved an engineering agreement with Walter E. Deuchler Associates Inc. of Aurora to conduct a flow monitoring study of the sanitary sewer in preparations for improvements to South River Lane.

The monitoring, which will cost $38,500, will analyze the water flows in the main sewer trunk to determine whether the sewer size is large enough or whether it needs to be replaced, officials said.

The area is susceptible to sanitary sewer overflows during heavy rain, Public Works Director Dan Dinges said.