Electrician needed for Portland studio

[pdxstudio]

Does anyone have suggestions for an electrician in the Portland, OR area that has experience with studios, particularly with regard to noise issues?
My home studio is near several very large radio towers and the electrical in my studio has some DIY elements from the previous owner.
I've been struggling with multiple noise types (60/120Hz hum, lots of hash, FM RFI) for years and I need some professional help. I've tried many bandaid solutions (ferrites, shielding, balanced power, etc.), but I'd like to make sure I'm starting with clean power and a strong ground.

Thank you