M_PB 4th Round Affordable Housing Plan Infrastructure Concerns

P a g e | 3 AN EQUAL OPPORTUNITY EMPLOYER www.westorange.org program states that for each additional gallon per day of sewage flow added to the JMEUC collection system from the new development, three (3) gallons per day of extraneous flow (I/I) that is currently known to exist within said municipal sanitary sewer lines and manholes, shall be eliminated and/or removed through an agreement or resolution between the developer and the municipality. Consequently, for every development that generates 100,000 GPD and based on the I/I reduction program, it will require the removal of 300,000 GPD of I/I from the Township’s sanitary sewer collection system. The JMEUC had Hazen & Sawyer perform a Sewer System Evaluation Survey (SSES) in 1994 with an accompanying sanitary sewer map for the Township in which various sources of I/I were discovered in the Township of West Orange at the time the study was conducted. According to tables 2, 3 and 4 of the SSES report2 the Township’s specific I/I source discovered at the time consists of: Table No. & Title (GPDR) 2- Sewer Infiltration Projects 88,415 3- Manhole Infiltration Projects 38,902 4- Inflow Identified 6,699,600 Although, there is a 1994 map of the Township’s sanitary sewer system as part of the SSES report, it does not provide any information in regards to the sanitary sewage capacity at the time nor takes into consideration the development that has taken placed since 1994 to the present. There are certain sections of the Township that are known for residents experiencing sewer backups during severe rainfall events. It is uncertain if the backups experienced during these events is due to lack of capacity of the sanitary sewer system or if it is due to I/I sources known since 1994 or after. The Township reports on an annual basis the I/I reductions obtained through the replacement of manholes via the various roadway improvement projects to the JMEUC. However, it is also uncertain if these I/I reductions are sufficient to address existing capacity issues and sewage increases in the future due to development. It will be necessary for the Township to ensure that for any future developments that agreements with developers are put in place to address the JMEUC’s I/I reduction program. Also, to find creative ways to fund a comprehensive asset management plan that will provide flow capacity and assist the municipality to

are put in place to address the JMEUC’s I/I reduction program. Also, to find creative ways to fund a comprehensive asset management plan that will provide flow capacity and assist the municipality to pinpoint areas in which it will be necessary and feasible to replace and/or enlarge the sanitary sewer system. Based on the above, there is adequate capacity at the JMEUC sewer treatment plant to accommodate future developments; however, the Township will need to be careful in ensuring that prior to the construction of any of the proposed inclusionary developments that adequate sewer capacity exists to convey the sewage to the treatment plant to fulfill its affordable housing obligation. 2 Sewer System Evaluation Survey (SSES) Report, 1994 JMEUC