The village owns and operates a sanitary sewer system

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The Village owns and operates a sanitary sewer system consisting of gravity collector sewers and a wastewater treatment plant (WWTP) with a permitted capacity of 550,000 gallons per day. The sanitary sewage collection and treatment system was originally constructed in 1967 and the WWTP, with an original capacity of
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1-15 Introduction to Wastewater Management 0.35 MGD, was operated for over 35 years without a major upgrade. As of 2009, the plant was operating at its full capacity, and experienced peak wet weather flows up to 10 times its average flow, forcing operators to use emergency bypass pumping to prevent sewer surcharging and basement flooding. The village’s sanitary sewer budget for 2009 was approximately $350,000. The budget can be broken down into the following categories, with percentages of the total budget for each category indicated: Personnel 43% Contractual 22% Benefits 15% Power 14% Insurance 5% Equipment 1% A portion of the contractual costs, since approximately 2001, has been allocated toward an annual sewer televised inspection and grout sealing program. This is where approximately 15 to 20 percent of the village’s gravity sewers undergo internal video inspection followed by pressure testing and grout sealing of leaking pipe joints. Although the program does not appear to have removed I/I (inflow and infiltration) from the system to a significant degree, it was reported that the program was successful in keeping I/I rates from increasing further. It also provided valuable information to the village DPW regarding the condition of the pipelines and identifying defects in the sewer system which could not be repaired by grout injection and required further evaluation. The village has also maintained capital reserve accounts to pay for unexpected repairs, engineering studies, etc., as needed. As of 2009, the village had approximately $74,000 in capital reserves. Capital reserves are replenished annually with sewer fund surplus funds. The Village Board, recognizing that the WWTP was at the end of its useful life, authorized an engineering study in 2004. It was through the preliminary data collection and analysis phase of the study that the 10 times peaking factor during wet weather was quantified. In accordance with NYSDEC design standards (i.e., “10 State Standards”), any upgrade to the village’s WWTP would have to be designed with tanks and equipment sized to handle these peak flows, effectively resulting in oversizing the facilities for the normal flow conditions which otherwise prevail at the plant. On this basis, the village board authorized an I/I evaluation; but because of the information gathered through the televising program initiated years earlier, the areas in the system with severely deteriorated gravity sewers and suspected storm sewer cross connections were identified.
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  • Spring '14
  • Management, Sewage treatment, wastewater management

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