I will add for clarification
Boise, 173.7625 is used simplex via a remote base on Pilot Peak for local flight following, Boise Interagency Dispatch Center (IDC).
McCall Airtanker Base, 121.825 is used simplex via a remote on Brundage Mtn. for local flight following, Payette IDC.
Ontario Seat, 123.9750 is the ramp frequency for this SEAT Base.
I have a 2019 document showing this base in the Blue Mtn. IDC in LaGrande, Oregon or the Vale Dispatch Center in Oregon.. Blue Mtn. shows two local flight following frequencies: Primary, 70.5250 Tone 167..9 out/164.8000 Tone 131.8 out with the repeater on Mt. Emily. Secondary 170.6000 out/164.9625 in TX/RX Tone 131.8 with a repeater on Mt. Howard. However, the maps seem to indicate it is within the Vale Dispatch Center area and it has two repeaters listed as "Local Flight Following," 171.7750 out/163.3750 in Tone 103.5 on Cottonwood Mtn. and Tone 131.8 on South Mountain.
I can't find any dispatch center that has a local flight following frequency of 166.3000. But then, my national aviation guide is dated 2019 and I can't get my hands on the 2020 edition.
Wells, it is in the Elko IDC area. The 2019 national aviation guide shows a local flight following frequency of 172.7500 simplex RX/TX tone 123.0 with a remote base on Elko Mtn. If memory serves me correctly, 169.4000 used to be the repeater output of the Elko BLM District's net.
I would like to see the document your information is taken from. Will you send me a PM with a link, or at least give me the name of the 2020 document you have? I've been able to find the documents you have used for all your other 2020 info posts, but am coming up blank on this one.
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