Remove unnatural links - penguin update

My website is penalized by the penguin update. I need an SEO expert to go through the links and clean it up so we can resubmit to Google. You need to follow Google's Webmaster guidelines, identify and listed all the unnatural links into a report with all the necessary info why those links need to be removed (Backlinks, Trust flow, Alexa Rank,etc.). You must have previous experience of doing this. In the message, please tell me briefly about your previous experience and the result of the sites you had fixed.