Wastewater Conveyance

Canton Creek Sewer Phases I & II – City of Canton, Georgia

These projects consisted of installation of approximately 4,400 LF of 24-inch PVC and DIP gravity sewer to provide adequate capacity for new developments east of the City of Canton.  Included in the projects were several stream crossings, a tunnel under I-575, and installation through a pristine golf course.  ESI was responsible for preliminary planning, route selection, final design, bidding, and construction administration/inspection.  The projects were completed in two phases.

Sewer Rehabilitation Phases 3 and 4 – City of Griffin, Georgia

Phase 3 consisted of furnishing and installation of gravity sewer and appurtenances for the repair or replacement of approximately 11,000 LF of existing 8″ through 16″ gravity sewer mains, 1,500 LF of 6″ service lines, repair or installation of approximately 70 manholes, and relocation of 400 LF of 6″ water main.  Phase 4 consisted of repair or replacement of approximately 3,500 LF of existing 8″ through 12″ gravity sewer mains, 900 LF of 6″ service lines, and installation of 10 manholes.  The projects included removal and replacement of sewers, pipe bursting and sliplining, cured-in-place lining and point repairs of sewers.

ESI was involved from the beginning in conducting sewer system evaluation studies to determine sources of inflow and infiltration, prioritizing the rehabilitation work to be conducted, preparing construction documents for the work, and inspecting the work during construction.

Inflow and infiltration sources can be found by gathering flow data in a manner that shows how much flow is coming from various basins and sub-basins during rain events.  The key to finding inflow is to use a process of elimination – begin by looking at flow to the wastewater treatment plant and continue by looking at the flow in each pump station basin.  From this, identify the worst areas for inflow and eliminate some areas, then continue narrowing the search by installing flow meters within sub-basins.  Our experience shows it is much quicker to find inflow by narrowing the search with flow meters, then narrowing down the area with high inflow using physical inspection (walking and looking for external signs, smoke testing, closed circuit televising and dyeing to find the exact leak).

New Hope Area Sewer Pumping Plan – Paulding County, GA

ESI performed a detailed evaluation of pumping options for this area of Paulding County that is experiencing rapid development and population growth. The area of study included the portion of the Picketts Mill Creek basin upstream of Dallas- Acworth Highway, the portion of the Possum Creek basin upstream of Dallas- Acworth Highway, and the portion of the Mill Creek basin upstream of the Cadillac Pump Station (located near where Southern Railroad crosses Mill Creek)

The general goal of the evaluation was to develop a plan that would result in optimum utilization of existing pumping facilities as well as optimum placement and utilization of future pumping facilities in the defined area. The project entailed preparation of a study and a written report on wastewater conveyance facilities that served as a planning tool for Paulding County officials. A primary goal of the study was to provide a concise source of key data to aid officials in planning for growth with respect to wastewater conveyance capacity. Paulding County is in the Metro North Georgia Water Planning District.

Ison Branch Interceptor Sewer – Griffin, Georgia

This project involved the paralleling and abandonment of an existing sewer including connection to existing sewers, switching services to the new sewer, an aerial stream crossing and several road bores.  The project was required due to significant infiltration and inflow in the existing interceptor and to lack of capacity for future developments.  The project was through a predominantly residential area, along Ison Branch, a tributary of Potato Creek, which required extensive easement acquisition and coordination with the property owners.

The new sewer consisted of 6,800 LF of 18” PVC pipe and 2,500 LF of 15” PVC pipe.  In areas of shallow depth, or close proximity to the creek, ductile iron pipe was used.  The aerial crossing consisted of 18” DIP anchored on each bank of the creek with concrete piers and bracing.

ESI was responsible for the planning, design, permitting, easement acquisition, and construction management for the project.  ESI’s foresight and coordination with the developer of a new subdivision prevented major conflicts with new homes and had the developer install a portion of the sewer at no cost to the City.

WordPress Appliance - Powered by TurnKey Linux