Project completed May, 2013
Location: Raymond, NH
Owner: Lamprey River Cooperative
Engineer: Provan & Lorber
Project Description
Project Background
Project Goals
Solution: Phasing of all work and working closely with suppliers and subcontractors to allow near seamless transitions.
Issue: Encountering large portions of the project were within ledge cuts.
Solution: The project required the removal of ledge to accommodate the installation of the new gravity sewer main for a majority of the project. With the use of a hammer on an excavator we were able to remove the ledge and not impact the nearby underground utilities including the new water system.
Issue: Requirements within the DES permitting required to compensate for loss of flood zone capacities with the installation of the raised leach field.
Solution: The Engineer, Provan & Lorber, designed two areas where materials were excavated to accept potential flood waters from the nearby Lamprey River. With funds remaining they were also able to perform work to provide a backup generator should a flood shut down power, this generator would continue to power the septic pump station.
- View of the site prior to work commencing
- Temporary relocation of a lilac
- A smaller system that was required for a portion of the properties
- Installing the new gravity sewer line
- Maintaining a dry trench while working within the watertable
- Removing the trench box
- Grading the small Flood Storage Area
- Compensatory Flood Storage with loam installed
- Completing installation of the leach field
- The pump station end of the raised leach field
- Completed tank and service installation
- Looking up the freshly paved roadway
- Looking up the freshly paved roadway
- A view of the compensatory flood storage area and raised leach field
- Completed tank and service installation