Current through Register Vol. 54, No. 7, April 4, 2022
infiltration/inflow analysis is required for sanitary sewer rehabilitation
projects as part of the Project Report/Facilities Plan.
(b) The applicant shall demonstrate to the
Department's satisfaction that each sewer system discharging into the
wastewater treatment facility is not or will not be subject to excessive
infiltration/inflow. For combined sewer overflow projects, in no case shall
inflow be considered excessive.
If the rainfall induced peak inflow rate results or will result in chronic
operational problems or system surcharging during storm events or the rainfall
induced total flow rate exceeds 275 gallons per capita per day during storm
events, the applicant shall perform a sewer system evaluation survey including
a cost effectiveness analysis to determine the quantity of excessive inflow and
shall propose a rehabilitation program to eliminate the excessive
(d) If the flow rate at the
existing wastewater treatment facility is less than 120 gallons per capita per
day during periods of high groundwater, the applicant shall design the project
including sufficient capacity to transport and treat any existing infiltration.
If the applicant demonstrates that its sewer system is subject to excessive
infiltration of 120 gallons per capita per day or more during periods of high
groundwater, the applicant shall perform a sewer system evaluation survey
including a cost effectiveness analysis and shall propose a rehabilitation
program to eliminate the excessive infiltration.
(e) The provisions of (a) through (d) above
are not intended to apply to stormwater runoff collection systems. However, a
similar analysis regarding the quality and quantity of infiltration/inflow into
a stormwater runoff collection system may be required.
N.J. Admin. Code §
Amended by R.1992 d.42,
See: 23 New Jersey Register 3282(a), 24 New Jersey Register
Amended to reflect that an infiltration/inflow analysis is
required for all wastewater treatment facilities project, and to clarify that
the capacity necessary to transport and treat existing infiltration where
wastewater flow rates of less than 120 gallons per capita per day during
periods of high groundwater are involved must be used as a basis for design by
the local government unit and identified that an infiltration/inflow analysis
may be required for stormwater management facilities projects.
Amended by R.1998 d.407, effective 8/3/1998.
See: 30 New Jersey
Register 1144(a), 30 New Jersey Register 2863(a).
In (a), inserted
"for sanitary sewer rehabilitation