INFLOW/INFILTRATION REDUCTION PROGRAM IN ROTTENWOOD CREEK AND OLLEY CREEK BASINS
Marietta Board of Water & Lights
Woolpert performed a sanitary sewer evaluation survey (SSES) of the Rottenwood Creek Basin for the Marietta Board of Lights & Water. Our project team performed manhole inspections, flow monitoring, dye testing, smoke testing and closed-circuit (CCTV) inspections for the city’s use in prioritizing and completing the repair of inflow and infiltration (I/I) and sanitary sewer overflow (SSO) problems.
- To reduce I/I and SSOs in the Olley Creek Basin, Woolpert crews completed the following tasks:
- Installed and maintained 7 area-velocity meters
- Installed and maintained 2 rain gauges
- Assessed the condition of 792 manholes
- Smoke tested 145,493 linear feet of pipe
- Performed 21 dye flood tests
- Woolpert crews provided the following services in the Rottenwood Creek Basin:
- 316 manhole condition assessments
- Smoke testing of 74,407 linear feet of pipe
- 7 dye flood tests
In 2010, Woolpert performed additional SSES work in Rottenwood Creek Basin, which included smoke testing 181,306 feet of pipe, assessing the condition of 364 manholes and verifying storm sewer cross connections and selected manhole and pipe defects through dye flood testing. Repairs to these defects were estimated to remove more than 450,000 gallons per day of I/I from the Marietta sanitary sewer system.