The Sterling Department of Public Works required a septic system replacement due to the expansion of their current facility. The project included a new septic tank as well as a pump chamber with a 2-inch force main to a new leaching area consisting of three leaching trenches with a retaining wall and vent pipe. Hannigan Engineering, Inc. also worked with the client to obtain the necessary approvals relative to the local planning board regulations, the Wetlands Protection Act, the Watershed Protection Act and Massachusetts Environmental Policy Act (MEPA) review.

Hanningan Engineering, Inc. provided complete civil design and surveying services for the client on this project, from the conceptual phase through the approval and construction phases. The project included a new access roadway, with a stormwater management system designed in compliance with the Mass DEP Stormwater Management Policy. Also included with the design of this project is a large community septic system with an advanced treatment system and pressure dosed leaching area. The project is currently still on-going with the construction of the residential condominium buildings proceeding as of late 2007.

Hannigan Engineering, Inc. provided civil site design and land surveying services for the new Hope Chapel site located in Sterling, Massachusetts. The project involved approvals before the local planning board, conservation commission and the board of health. Approval was also required from the electric power utility company for work within an existing transmission line easement. Mass Highway department approval was also required for the new driveway location along the public highway.