The study, being performed by the engineering firm Robinson Engineering, LTD, of South Holland Illinois, includes smoke testing of the sanitary sewers in the areas noted on the map. Smoke testing is a simple means of locating openings in the sewer system that allow surface rainwater runoff to enter the sanitary sewers. Air combined with nontoxic smoke is forced into the sewer lines to disclose the location of connections and leaks.
Smoke will appear where there are defects in the main sewer line or laterals (connection between the main line and a building) or where there are other connections to the sewer system such as roof drains, patio drains, and footing drains. Smoke should not enter buildings unless there are dried-up drain traps or an improper sewer connection.
To help prevent smoke from entering your home, please pour water into sinks and floor drains. You should always feel free to call 911 in an emergency. However, if you believe smoke is entering your home from smoke testing, please approach a member of the Robinson field crew if they are still on your street. If the field crew is no longer in the area you may contact Robinson Engineering at (815) 412-2025.
The smoke is non-toxic, creates no fire hazard, leaves no residue, dissipates in about an hour, and is harmless. However, if someone in your home has respiratory problems, you may wish to take extra precautions on your own, such as leaving your home during the actual testing. The smoke testing will begin on November 1st and is anticipated to be completed by November 11th. Additional notification will be provided by door hanger cards before the smoke testing is to start in your area.
If you have any questions, please call Rodney Phillippi at Robinson Engineering at