Excisional skin surgery involves the use of relatively superficial structures, is performed under local anesthesia, and seldom entails major blood loss or fluid shifts. That being said, it is still an invasive procedure, and a preoperative assessment of the patient is essential.
Current local time in Oshawa Canada is 12:44 PM EDT.
I know from Oshawa you can easily see the Somerset Coal Power Plant just east of Olcott. Oshawa is pretty much the far east of the Greater Toronto Area, so you'd have to be standing west of there to get a clear shot straight across Lake Ontario.