Normally no. However, if blasting is performed within 250 feet of a structure, a pre-blast survey is performed at no cost to the owner. The survey will document any cracks or existing damage. We encourage the homeowner to be a part of the process to protect their interest as well as the contractor's. If you are feeling excessive vibrations, call the CSO Information Center at 847-7246 or contact the project superintendent. The City takes blasting very seriously and has developed strict policies for its use. All blasting is permitted by the Fire Marshall's office. Blasts are scheduled at the same time everyday, with warning signals that can be heard within the immediate blast area.