Just found a map of the current and future tower sites for Lapeer County's new MPSCS simulcast system.
http://www.lapeercounty911.org/project/LapeerMPSCS_7Site_6-15dB_Bldg_Inb_PRELIMINARY-7-24-09.pdf
http://www.lapeercounty911.org/project/LapeerMPSCS_7Site_6-15dB_Bldg_Inb_PRELIMINARY-7-24-09.pdf