Green Mountain Power TTC/ATC/TRM/CBM values for GMP’s non-PTF Transmission Path Path GMP-ISNE TTC 9999 ATC 9999 TRM CBM 0 0 Non-firm transmission service under Schedule 21 is always available. Therefore, it is unnecessary to post daily non-firm service that has become available as a result of not scheduled firm transmission service. TRM and CBM are presently set to zero will be reviewed as appropriate (at a minimum annually) to verify the values. If a non-PTF path becomes constrained and the yearly or monthly ATC value changes because of a 10 percent or more change in TTC, GMP will post a narrative for such path.