Greenfield Wastewater Utility - Excavation, Disposal and Regrading Improvements

The Project consists of constructing the following:The project includes but is not limited to the excavation, removal, off-site disposal, and on-site stockpiling of approximately 80,000 cubic yards of urban/ construction debris intermixed within the soil structure variable in type, quantity, and size of debris. The project will occur at the City’s construction debris dump site located south of the existing waste- water treatment plant (WWTP). A Geotechnical Study, Environmental Review and Geophysics Investigation, and a Soil, Groundwater, Waste Management Plan (w/Addendum) have been performed / assembled /approved and are provided in the project specifications. The majority of the excavated material is anticipated to be construction debris and will be hauled off-site for disposal at the local CGS landfill. Some of the excavated material will be soil, which will be stockpiled on-site and addressed as part of the City’s WWTP Improvements Project (which is anticipated to bid and be initi- ated shortly after the successful outcome of this excavation project). Sheeting will be required to be installed to protect a roadway, influent interceptor sewer, water main, and maintenance building. A new aggregate surfaced road is required to be installed on-site for purposes of performing the work while maintaining unfettered access to the WWTP by Owner. The majority of the excavation will occur to the approximate maximum groundwater elevation identified in the Geotechnical Study. Excavation seepage, runoff, etc. will be required to be retained and processed through the City’s WWTP by Contractor. PPE level D is anticipated.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 31 -	Earthwork, Grading, Earthwork Methods.
Division 33 -	Utilities.