Archive for April, 2014

Hybrid Sewer Update – April 2014

April 5, 2014

Information from County Staff


Members of your committee met with County Staff on Thursday, April 3rd. Staff members present were Ms. Jaimol Charles, P.E. (our newly assigned Project Manager), Greg Rouse, P.E. (engineering manager), and Jonathan Cole, P.E., President of Giffels-Webster Consulting Engineers.
Significant points discussed were:
  • Funding is in place for Hybrid Gravity Sewer in our N3 neighborhood. Giffels-Webster Engineers, which has the contract for designing the system in our area, is modifying its contract with the county to reflect that the plan has changed from grinder pumps to hybrid gravity. This contract modification will be presented to the County Commission for what should be routine approval.
  • The next step will be a ground-penetrating radar (GPR) survey of the neighborhood. This survey will look for for specific sub-surface conflicts to be considered in the final engineering design. We can expect to see GPR operators as early as June. The survey will take approximately three weeks. If the survey confirms the feasibility of the conceptual design, then the project will be a “go.” There is a remote chance that the survey could turn up impediments that will render the plan unworkable. However, the engineers seem confident that they will be able to build the hybrid gravity system pretty much as they envisioned in the conceptual design.
  • Assuming that the contract modifications pass muster, and the GPR survey finds no unforeseen impediments, the final design should be completed by December 2014. This final plan will be presented to the community at a public meeting.
  • The project will then be put out for bid and construction could begin in early 2015. Construction could take up to a year.


Ground Penetrating Radar

Ground Penetrating Radar