Zelen is licensed by the Arizona Registrar of Contractors (AE-124625) in Soil and Groundwater Remediation, as well as, Underground Storage Tank Removal. Additionally, Zelen has been the prime contractor for other environmental consultants for remediation, and pilot testing. Zelen has also been the prime for drinking water treatment systems and small scale wastewater treatment systems.

The primary focus of Zelen is environmental consulting. Quality Environmental Assessments, Site Investigations and Soil and Groundwater Remediation are some of our company’s strongest abilities. Co-ordinating with agents, lenders and investors has put Zelen in the forefront in Arizona Real Estate. Understanding opportunity, as well as, co-operating between clients to disclose are key factors in commercial real estate today. Zelen also assists Hogan School of Real Estate in providing the latest information to Arizona’s Realtors on Environmental Disclosure.