The E-Quest Corporation has 20 years of experience in the preparation of Phase I environmental site assessments for a wide variety of clients, specializing in commercial properties. During this time we have completed over 2,000 PI ESA projects throughout the Western United States. Many of our expert staff members have been with us from the beginning. We are quick, efficient, reasonably priced and in accordance with ASTM standards. Our top engineer, Howard Hallman is a Colorado Registered Professional Engineer with over two decades of experience that you can rely on. Our reports are easily understood and give clarity and confidence to our clients. Prices generally range from $1,700 to $2,750 per site. Call or  This e-mail address is being protected from spambots. You need JavaScript enabled to view it us for a quote.