Apex Septic Design was established by Tai Nguyen, registered environmental health specialist # 7177. Tai Nguyen was a former senior septic staff member in the Well and Septic Section, Sonoma County Permit and Resource Management Department (PRMD) and has over ten years of experience in onsite wastewater treatment systems. Through constantly working with challenging projects, he knows the permitting process and can help clients meet their goals. Projects expertise includes legalizing unpermitted buildings and septic systems, evaluating septic systems and/or designing septic systems to remodel and upgrade an existing house or business.