A code regulating the location, construction,
use, maintenance, and method of emptying or cleaning individual sewage
disposal systems, the issuance of permits to locate, construct, empty
or clean the systems, and fixing penalties for the violation thereof
is hereby adopted pursuant to N.J.S.A. 26:3-69.1 et seq. A copy of
the code is annexed to this chapter and made a part of it without
inclusion of the text.
The code established and adopted by this chapter
is described and commonly known as the “Individual Sewage Disposal
System Code of New Jersey (1978).”
Three copies of the Individual Sewage Disposal
System Code of New Jersey (1953) have been placed on file in the offices
of the Secretary of the Board of Health and the Township Clerk for
the use and examination of the public.
If a license, permit or certificate required
by this chapter is denied by the Board of Health, a hearing shall
be held thereon before the Board within 15 days after request is made
by the applicant. Upon the hearing, the Board of Health shall affirm,
alter or rescind its previous determination and take action accordingly
within 15 days after the hearing.
The Board of Health may order all further work
in and about any individual sewage disposal system, which is being
erected or installed in violation of the code, to be stopped forthwith,
except such work as shall be necessary to remedy the violation, and
thereafter the work continued without any violation of the provisions
of the code. After issuance of such order and the service of a copy
upon the person connected with or working in and about the erection
or installation of the disposal system, or any part thereof, no further
work shall be done except as aforesaid.
The following minimum standards for construction
of individual sewage disposal systems are established:
A. Minimum size disposal beds or fields.
(1) For proposed new individual sewage disposal systems,
two complete disposal areas shall be provided, each of which shall
meet all requirements. An approved effluent diversion device shall
be provided between the two disposal areas. The device shall be accessible
to adults, but not to children. The disposal areas should be alternated
annually to allow rejuvenation of one area while the other area is
in use.
(2) Where a second disposal area is added to alter an existing system, the old disposal area shall be salvaged, if practical. This may be accomplished by the use of an approved effluent diversion device as described in Subsection
A(1) herein, or by other methods acceptable to the administrative authority or its authorized agent.
(3) Disposal trenches shall be the preferred type of disposal
area. Other types of disposal areas may be used where a trench system
would be clearly infeasible.
B. Seepage pits. When a seepage pit system is so designed
for an individual sewage disposal system, it shall meet the following
minimum standards of construction:
(3) When two or more seepage pits are to be used, they
shall have minimum diameters of 10 feet and minimum depths of 10 feet.
(4) Seepage pits shall be a minimum of 20 feet apart.
A precast concrete distribution box shall be used to distribute the
effluent equally to two or more seepage pits.
(5) When seepage pits are used, a dual system shall be installed as in Subsection
A.
C. Septic tanks.
[Amended 12-15-1998 by Ord. No. BH-98-1; 4-21-2004 by Ord. No. BH-04-1; 4-18-2019 by Ord. No. 2019-03]
(1) Septic tanks serving single-family dwelling units with four or fewer
bedrooms shall have a minimum capacity of 1,000 gallons. Septic tanks
serving single-family units with five or more bedrooms shall have
an additional capacity of at least 250 gallons per bedroom.
(2) There shall be a minimum distance of 100 feet between all water wells
and the disposal field.
(3) When reviewing plans for a repair or alteration of an existing septic system, the Board of Health or its authorized agent may grant a waiver from the strict application of the requirement as set forth in Subsection
C(1). The granting of this waiver would be based upon the determination by the Board or its authorized agent that, by reason of an extraordinary and exceptional situation uniquely affecting a specific piece of property or the structures lawfully existing thereon, the Board or its authorized agent finds that the strict application of Subsection
C(1) of this section would result in peculiar and exceptional practical difficulties to, or exceptional and undue hardship upon, the owner of such property.
D. Piping. All piping shall conform to the standards
set forth in the Individual Sewage Disposal System Code of New Jersey,
1978.
E. Percolation rates. All percolation rates shall conform
to the standards set forth in the Individual Sewage Disposal System
Code of New Jersey, 1978.
F. Percolation tests. The quality of soil available as
a percolation media for the disposal of septic effluent shall be determined
from the results of a test as herein described:
(1) Percolation tests shall be performed at the site of
each disposal area. A minimum of two percolation tests shall be performed,
distributed over the proposed area of the disposal system.
(2) Percolation tests shall be performed as described in Subsection
F(5).
(3) Percolation tests shall not be made in test holes
which have been allowed to remain open to the atmosphere for periods
over two days or in frozen ground. Tests shall not be made in filled
ground unless the soil has been compacted or allowed to settle to
the satisfaction of the administrative authority.
(4) The percolation test hole shall be placed at the depth
of the proposed disposal system. In deep disposal systems, such as
seepage pits, the percolation test hole shall be located in each soil
stratum.
(5) Percolation tests shall be performed in accordance
with the following procedure:
(a)
Step 1: A test hole shall be dug to the depth intended in Subsection
F(4) with a hand auger or shovel producing a hole having a diameter of 14 inches or 12 inches square.
(b)
Step 2: Any smeared soil surfaces from the sides
of the hole shall be removed to provide as natural a soil interface
as practical to infiltrating waters. All loose material on the bottom
of the hole shall be removed and a two-inch layer of fine gravel shall
be placed in the hole to prevent scouring of the bottom.
(c)
Step 3: The hole shall be presoaked with clean
water to allow to drain. If the soil is known to have a low shrink-swell
potential, less than 15% clay content, proceed with Step 4. If the
soil has a high shrink-swell potential, a high clay content, then
the test hole should be kept wet for a period of 24 hours, prior to
proceeding with Step 4.
(d)
Step 4: Determination of soil suitability. The
percolation test hole as prepared in Step 3 shall be equipped with
a float gauge, Figure 1.1. The hole shall be filled with clean water
to exactly six inches above the bottom of the hole. After a period
of 30 minutes, the water level shall be measured. The hole shall be
refilled to a depth of six inches above the bottom and the process
repeated until four determinations have been made. If the average
percolation rate is less than one inch of water in 30 minutes, the
soil is unsuitable for ground disposal.
(e)
Step 5: Determination of percolation rate for
design purposes. The percolation test hole shall be equipped as prepared
in Step 3 with a float gauge, Figure 1.1. The hole shall be filled
with clean water to exactly six inches above the bottom of the hole.
With the float gauge and timepiece, the time for the water to recede
one inch shall be determined. The tester shall refill and repeat the
procedure until successive time intervals needed for one inch to be
absorbed indicate that a stabilized rate has been obtained. A minimum
of two trials shall be recorded. The stabilized percolation rate is
recorded in minutes per inch.
(6) Reports shall be furnished to the administrative authority
indicating the results of each percolation test in minutes per inch,
the date of the test, effect of recent rain or lack of rain, the apparent
moisture of the soil prior to the test, the depth to groundwater,
if encountered, the number of preliminary tests made to determine
the suitability of the soil, the type or types of soil encountered,
together with the thickness of each layer and all other factors affecting
percolation.
(7) Subsoil and groundwater determinations. The suitability
of the soil mantle for a septic tank depends also upon the geological
setting. Information relative to the soil structures and groundwater
elevations adjacent to or below the proposed disposal area shall be
required.
(8) A soil profile of the proposed disposal area shall
be determined by excavating a hole with a backhoe as deeply as possible
before rock or groundwater is encountered to limit excavation. If
a soil profile deeper than the limits of a backhoe is required, a
power auger may be used.
(9) The depth of the soil profile shall be a minimum depth
of 10 feet or to solid rock when encountered within the foregoing
depth requirement. The data obtained from this soil profile will be
the basis of design of the disposal area.
(10)
Reports of the type, depth and nature of the
soils found, with the soils classified according to the National Comprehensive
System of Soil Classifications system and depth to groundwater, shall
be made and furnished to the administrative authority. If soils encountered
are mottled, indicating seasonal groundwaters, the depth and extent
of the mottling shall be noted. The report shall also state the climatic
conditions of the six weeks prior to the excavation of the soil log.
(11)
Where rock is encountered within the depth as required in Subsection
F(9), the report shall state its kind and depth encountered. If the rock is the type that is fractured or seamy, the direction of the slope and approximate degree of slope shall also be stated.
(12)
Where groundwater is encountered within the depth as required in Subsection
F(9), the report shall state the depth at which the water was encountered, whether flowing from the bottom of the excavation or from the side in a water-bearing strata. Also the administrative authority may request additional soil profiles at other times of the year if a high groundwater table is suspected, based on vegetative growth and knowledge of the area.
G. Design procedures.
(1) The design procedures as described in this section shall pertain to all types of individual disposal methods, leaching fields, seepage pits, leaching trenches. The type of disposal system to be installed shall be determined on the basis of location, topography, soil permeability and groundwater elevation. The system shall consist of a septic tank discharging its effluent to a suitable subsurface disposal area as hereinbefore described, except as it may be modified in accordance with Subsection
A.
(2) All engineering designs for sewage disposal systems
shall consider the limitations for soil absorption systems specified
in the latest U.S.D.A. Soil Survey of Sussex County. Where the U.S.D.A.
Soil Survey designates the land to be used for sewage disposal as
having "severe limitations" for soil absorption systems, the engineer
shall provide a detailed justification, satisfactory to the administrative
authority or its authorized agent, of how the design compensates for
the limiting conditions.
(3) The design of the disposal areas shall be performed
by a professional engineer licensed to practice in the state of New
Jersey. All plans, test data and any other information requirements
shall be certified and sealed by the professional engineer designing
the system.
(4) A site plan shall be submitted by the owner or applicant prepared, pursuant to Subsection
G(3), prior to the issuance of a building permit and the following shall be shown:
(a)
Existing contours at ten-foot intervals covering
an area 100 feet beyond the limits of any component part of the disposal
system.
(b)
All wooded areas on the property.
(c)
The location of wells on adjoining property.
(d)
The location of septic systems on adjoining
property.
(e)
All storm drains as to size, type and location.
(f)
Existing structures and structures on adjoining
property.
(g)
Location and description of benchmark to check
disposal and building installations.
(h)
Proposed contours at ten-foot intervals.
(i)
Proposed house location with first-floor elevations.
(k)
Location of retaining walls or terraces.
(l)
Location of proposed well.
(m)
Location of all component parts of the sewage
disposal system.
H. Design criteria. The design of the disposal areas shall be based on the following: percolation tests shall be performed under the supervision of the engineer, or his duly appointed representative, according to Subsection
F.
The following fees and charges are herewith
established.
A. Locate and construct an individual sewage disposal system: as set forth in Chapter
198, Fees.
B. Renewal of individual sewage disposal system: as set forth in Chapter
198, Fees.
C. Reapplication to locate and construct individual sewage disposal system: as set forth in Chapter
198, Fees.
D. Alter an existing individual sewage disposal system: as set forth in Chapter
198, Fees.
E. Renewal to alter an existing individual sewage disposal system: as set forth in Chapter
198, Fees.
F. Reapplication to alter an existing individual sewage disposal system: as set forth in Chapter
198, Fees.
G. Reinspection of an individual sewage disposal system: as set forth in Chapter
198, Fees.