City of Lakewood
Sewer System Planning Project
Sewer System Planning Project (aka Long Term Control Plan or LTCP)
The National Pollution Discharge Elimination System (NPDES) Permit acts as our "license" to operate the sewer system and the waste water treatment plant (WWTP). It is renewed every five years, with each renewal accompanied by a set of specific requirements, or mandates, that the City must comply with. These mandates include major construction projects intended to eliminate the overflows of our combined sewers. Ohio EPA changed the designation of Lake Erie such that Lakewood's previously permitted combined sewer overflows (CSO's) must now be eliminated. The location of the 9 existing CSO’s are shown on the map at the bottom of this page. The City is subject to sanctions if the requirements of the Permit are violated. These sanctions could include court orders and substantial fines. Neither Ohio EPA nor U.S. EPA provides funding to pay for the mandates they impose.
Why are we hearing so much about CSO's in Lakewood now?
Since the founding of the EPA there has always been an emphasis on the gradual elimination of CSO's nationwide. The EPA started with the largest cities and has gradually phased in smaller and smaller communities. Cleveland, Columbus, Cincinnati, Akron and Toledo have already had to develop and submit compliance plans called Long Term Control Plans (LTCP). It is now the turn for cities the size of Lakewood. Lakewood submitted our LTCP to the EPA in June 2006, and we are still going through a question and answer period.
What is the Long Term Control Plan?
The NPDES Permit requires completion and submittal of Lakewood’s Long Term Control Plan (LTCP). It is a roadmap that tells Ohio EPA how the City will address the new requirement to eliminate the CSO's. The primary components of the LTCP include:
- Analysis of the configuration and flow capabilities of the existing sewer system
- Evaluation of alternative methods intended to manage CSO’s during storms
- Selection of the most cost effective and acceptable method for accomplishing those goals
Read Executive Summary of Lakewood's LTCP »
The concept outlined by the Long Term Control Plan will be finalized by a design project that will produce construction drawings and specifications. There will likely be a series of major underground construction projects over a period of several years based on the Long Term Control Plan. We anticipate that a series of deep tunnels may be bored under the City into which the existing sewer system will discharge. These tunnels would store the excess sanitary and combined sewage until it could be processed through the waste water treatment plant.
- Construct a 22.5 million gallon storage tunnel (17,000 feet long and 15 foot diameter) to hold combined sewage until the WWTP can treat it
- Construct a Madison Avenue relief sewer
- Rehabilitate the existing interceptor sewer
- Redirect all combined or sanitary flows from the West End area to the existing interceptor sewer on West Clifton
- Continue to separate sanitary and storm sewers
Combined Sewer Outflow (CSO) Locations
View Enlarged Image »