Thanks for all the responses. When I put the fresh Gates belt on I started with what felt like proper tension though it still squealed so I pulled it tighter and tighter by just picking up on the alternator until it quieted down. It did make me a little nervous about water pump bearing longevity etc..
It definitely sounds to me like it's coming from the ALT pulley.
Inside the groove of the CVF pulley has a slick glossy painted finish compared to an oem one...Thinking that could be a contributing factor..