modification to add fixed site: Libertyville, (Lake), IL - NL: 42 17 21 WL: 88 00 00 and increase number of mobile units to 25 - Renew modification to add fixed site: Libertyville, (Lake), IL - NL: 42 17 21 WL: 88 00 00 and increase number of mobile units to 25 - Renew SYB 2-26-98