The first thing you should do is check SSOCOF's positive response system to see what positive response code was entered by the members listed on your locate ticket (see question 4). Those members that have not provided the system with a positive response update within two full business days (10 full business days when excavation site is underwater) will automatically be sent a second notice. You do not need to contact the call center. According to Chapter 556.105(5)(a), you may proceed with the excavation using reasonable care and detection equipment or other acceptable means to locate underground facilities. You can also complete a Member Non-compliance Form  by clicking here.