EnviroChamber™ system is ideal for remote New Hampshire town

Municipal septic system expansion is a success with EnviroChamber units

Finding and transporting sand or crushed stone near Errol, N.H. is a difficult task. That's why engineers specified Hancor high capacity EnviroChamber units to replace a failed pipe and stone septic system. EnviroChamber units enabled Errol to expand its municipal system to a 20,000 gallon-per-day capacity of residential and commercial waste, allowing more households to connect to the sewer system.

Engineer Mike Duffy said he liked the chambers because they minimized the amount of off-site materials required for the leach field. "The EnviroChamber units provided the quality and design features required, and they were the least expensive units to purchase and install," said Duffy, P.E., designer and construction manager for Provan & Lorber, Inc. in Littleton, N.H.

Contractor Joe Conn, vice president of Conn Brothers Construction, found that the gravelless option saved time and money. "Installing a septic system is a lot more work with stone - it's a whole different ballgame." Ease of installation was a key factor on the Errol project, especially since EnviroChamber units snap together and can be connected and installed without tools. "It's a lot easier doing chambers than pipe," Conn said. "The chambers clip together easily and we liked working with them."

Septic system expansion for Errol, NH. EnviroChamber units replaced failed septic system that had been there for more than 20 years.

Installation of 960 high capacity H-10 EnviroChamber units. 16 rows, 400 feet each, 30 units each row.

Installation Date:
June-July 1996

Joe Conn, Billy Conn; Conn Brothers Construction; N. Woodstock, NH

Mike Duffy, P.E.Designer and Construction Manager; Provan & Lorber, Inc. Littleton, NH

City of Errol, NH

Trench depth was 18" below existing failed system. Excavation to clean native material. Granular select fill to chamber bottom elevation used as needed.