Combined Sewer Overflow Control Plan

Avon Lake’s Combined Sewer Overflow, Long Term, Control Plan

Shown here is a section of combined sanitary storm sewer before separation in Rd. 83 Belden Road.

Anticipating further regulation, the City of Avon Lake and Avon Lake Municipal Utilities immediately began to separate its combined sewers and by 1974 had a City Master Sewer Plan in effect that would eliminate dry weather CSOs. By 1994 congress established a CSO Control Policy to provide guidance and authorize states to issue permits limiting the levels of overflow cities could discharge into the environment. It also ensured the public would be involved in the implementation of CSO management practices and controls.

In May of 2001, Avon Lake City Council authorized the City Engineer to begin requesting engineering service proposals for the design and construction of the Avon-Belden Road Combined Sewer Separation. The following March, the Municipal Utilities began negotiating a contract with Brown & Caldwell, a nationally recognized engineering firm specializing in CSO control planning, to develop a long term plan required by the State of Ohio EPA and USEPA.

Here is an 18″ diameter sanitary sewer line installed inside a section of combined sewer. The larger 84″ pipe now serves soley as a storm sewer, which discharges only run off water into Lake Erie.

Avon Lake’s Long Term Control Plan was introduced to the public at a meeting in the community library in January 2003. Sewer separation began in June on Moore Rd.

Designed to meet present requirements of the Clean Water Act, the plan will lessen future impact of overflows on the environment. It has a phased approach that considers the financial burden to the community. The plan is site-specific to Avon Lake, addressing the sensitive areas at Heider Ditch, the beach, and the water plant’s intake in Lake Erie. Alternative measures to sewer separation, such as storage/treatment, infiltration/inflow reduction, floatables control, and increasing treatment at Avon Lake’s Water Pollution Control Center, are also being considered. The WPCC presently has capacity to receive and treat any additional flow generated by the plan.

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