GENEVA –  Aldermen on Monday approved spending $38,500 for sanitary sewer flow monitoring in preparations for improvements to South River Lane.

The monitoring will analyze the flows in the main sewer trunk to determine whether the sewer size is large enough or if it needs to be replaced, officials said.

The area is susceptible to sanitary sewer overflows.

Because of its age, the water main will be replaced during the 2014-15 fiscal year.

If the sewer needs to be replaced, it will be done when the other improvements are being made, officials said.

Aldermen approved an engineering agreement with Walter E. Deuchler Associations Inc., of Aurora, to conduct the flow monitoring study.