7:9A-1.6 General prohibitions
| ||
(a)
|
No person shall locate, construct, alter or repair any individual subsurface
sewage disposal system until a permit for the location, construction, alteration
or repair of said sewage disposal system has been issued by the administrative
authority as defined in N.J.A.C. 7:9A-2.1.
| |
(b)
|
The administrative authority shall not issue an approval, permit, certification
or license for the installation, construction, alteration or operation of
an individual sewage disposal system where such installation, construction,
alteration or operation will violate or otherwise not be in compliance with
the requirements of N.J.A.C. 7:9A-1.1 et seq., this chapter and all other
applicable laws, regulations and ordinances.
|
(d)
|
The administrative authority may order all work in and about any individual
subsurface sewage disposal system, which is being constructed or installed
in violation of N.J.A.C. 7:9A or this chapter, to be stopped immediately,
except for such work as shall be necessary to remedy the violation; and thereafter,
the work shall be continued only without any violation of any of the provisions
of N.J.A.C. 7:9A and this chapter, and after issuance of such an order and
the service of a copy upon any person connected with or working in or about
the construction or installation of the disposal system or any parts thereof,
no further work shall be done except as stated above.
|
(d)
|
In the event that any present or future state law or regulation imposes
standards more stringent than those contained in this chapter, the more stringent
standards shall govern.
|
(e)
|
The professional engineer who designs the individual subsurface sewage
disposal system shall certify, in a signed and sealed writing, that the proposed
design is in full compliance with the Standards for Individual Subsurface
Sewage Disposal Systems (N.J.A.C. 7:9A-1.1 et seq.) and the requirements of
this chapter. Such certification shall accompany the application for a permit
to construct the system, and may be furnished by way of a note on the design
plan.
| |
(f)
|
New individual subsurface sewage disposal systems shall not be placed
in operation, nor shall there be a closing of sale or occupancy of any dwellings
or buildings or additions thereto which rely on a new individual subsurface
sewage disposal system for sewage disposal until the administrative authority
shall have issued a certificate indicating that the subsurface sewage disposal
system thereupon has been located and constructed in compliance with any permit
issued, the requirements of N.J.A.C. 7:9A-1.1 et seq., this chapter and all
other applicable laws, regulations and ordinances.
|
(c)
|
The applicant has the burden of proving compliance with the provisions
of the code and this chapter in all matters pertaining to site evaluation,
system location, soil suitability, permeability testing, design and construction
requirements for the system. Should the administrative authority elect to
provide guidance to the applicant as to the requirements for such compliance,
such guidance shall not be construed to limit the administrative authority
in any way. Where doubt exists regarding such compliance, the administrative
authority shall have the right to require additional information on such compliance
and on matters which may affect the proper functioning of the system.
|
The minimum separation distances1 (feet)
between the following components of the system and the features listed below
shall supersede those provided in Table 4.3. The location of a new well must
be in conformance with the requirements of N.J.A.C. 7:10-12.13.
|
Component
|
Well or Suction Line
|
Well Service Line, Pressure
|
Watercourse3
|
Property Line
|
Detention Basin, Retention Basin, Infiltration Basin
|
---|---|---|---|---|---|
Building sewer
|
25
|
10
|
---
|
---
|
---
|
Septic tank, dosing tank
|
100
|
----
|
100
|
15
|
---
|
Distribution box
|
100
|
----
|
1002
|
15
|
---
|
Disposal field
|
100
|
----
|
1002
|
20
|
50
|
NOTES:
|
---|
1The above distances supersede any less stringent
provisions of N.J.A.C. 7:9A-4.3.
|
2May be reduced to 75 feet, provided that
design incorporates a select fill enclosure.
|
3As measured from the top of the bank.
|
(d)
|
Notwithstanding the above, construction of any component of a subsurface
sewage disposal system shall meet the steep slope development requirements
contained in § 115-27B(4) of the Code of the Township of Alexandria.
|
(a)
|
As part of the initial site evaluation process, prior to selection of
a site for a proposed subsurface sewage disposal system, the applicant shall
take into consideration the possible presence of freshwater wetlands which
are protected by the Freshwater Wetlands Protection Act, N.J.S.A. 13:9B-1
et seq., and the rules promulgated pursuant thereto, N.J.A.C. 7:7A. The applicant
shall furnish the administrative authority with evidence that he or she has
complied with the applicable regulation. This evidence shall meet the requirements
of (c) below and shall be required whenever the criteria given in (b) below
are satisfied.
|
(b)
|
Requirements for profile pits. A minimum of two profile pits is required
for each disposal field. Soil borings in lieu of profile pits are not acceptable.
|
(d)
|
Seepage pits. When a seepage pit(s) is proposed, as allowed in N.J.A.C.
7.9A-5.2(d), a minimum of one profile pit shall be performed for each seepage
pit. Profile pits shall be located no further than 15 feet from the proposed
seepage pit.
|
2
|
Criteria for recognition of zones of saturation. Except for tests in
connection with the alteration or repair of existing systems, initial groundwater
elevations shall be determined only during the months of January through April
[unless the period for initial testing is lengthened or shortened by the New
Jersey Department of Environmental Protection (NJDEP) or by the administrative
authority due to a significant departure from normal climatic conditions],
and shall be based upon the following:
| |||
i.
|
Water levels shall be measured directly within soil profile pits. Observation
pits shall be dug in natural soil immediately outside of or within 15 feet
radius of the proposed disposal field as required by N.J.A.C. 7:9A. The observation
pits shall be a minimum of 10 feet in depth or to bedrock, but in no case
shall the observation pit extend less than four feet below ground surface
at the location of the proposed disposal field.
| |||
ii.
|
The observation pit shall be of such size as to readily permit observation
of earth material characteristics, depth to seasonally high water table and
depth to bedrock.
| |||
iii.
|
Tests in the disposal area shall be conducted to provide evidence of
the elevations of any perched zone of saturation and the regional zone of
saturation. These tests shall be conducted in a manner to allow for water
table equilibrium to be reached over a period of not less than 24 hours from
the start of the test through a method to be proposed by the applicant's
engineer and agreeable to the administrative authority or its agent. The usual
method acceptable to the administrative authority is by monitoring standpipes
or piezometers installed vertically within the soil profile pits and the pits
backfilled.
| |||
iv.
|
Initial water table observations shall be made after equilibrium is
reached, as described above.
| |||
v.
|
Additional daily monitoring of the water table over a period of not
less than three business days from the start of the test will be required
when any of the following conditions exist:
| |||
(A)
|
The seasonally high water table is observed within five feet of the
surface of the ground;
| |||
(B)
|
Where there is mottling observed within five feet of the surface of
the ground, unless clearly demonstrated to be the result of a perched zone
of saturation.
| |||
(C)
|
Where the Hunterdon County Soil Conservation Map shows high water table
to be within five feet of the surface of the ground and the on-site soil profile
description matches the description of the soil series in question within
the County Soil Survey Report, or the soil is rated as having severe constraints
for septic disposal due to seasonal high water table (the seasonally high
water table levels for the site as determined by the Soil Conservation Service
in its Soil Survey Report, together with a comparison of the soil profile
present at the site with the soil series description contained in the County
Soil Survey Report, shall be provided by the applicant to the administrative
authority); or
| |||
(D)
|
Where there are topographical features, hydric soils or hydrophitic
vegetation that would indicate the likelihood of a high seasonal groundwater.
| |||
vi.
|
The administrative authority may require additional information and
testing concerning the seasonally high water table based upon the severity
of the water table indicators encountered and prevailing climatic conditions.
| |||
vii.
|
All water table tests and monitoring results shall be certified by a
licensed professional engineer and witnessed by a representative of the administrative
authority. Reports of the depth to the referenced water tables shall be made
on forms furnished by the administrative authority.
| |||
viii.
|
All test piezometers and standpipes shall be removed within 10 days
after completion of the tests, except where authorized by the NJDEP for water
quality testing. Extensions of time may be granted upon written application
to the administrative authority.
|
(l)
|
The tube permeameter and soil permeability class rating tests shall
not be used in soils which are predominately clay, silty clay, silty clay
loam, sandy clay, sandy clay loam, clay loam, silt loam, silt or loam unless
the results of the test are confirmed by a field test method conducted in-situ
as permitted by the Code. For further clarification on the restricted soil
types, reference is made to Appendix A - Figure 6 of N.J.A.C. 7:9A.
| |
(m)
|
The pit-bailing test shall be performed only during the period of January
through April as may be extended or shortened by the NJDEP or administrative
authority due to unusual climatic conditions. When site conditions dictate
a pit-bailing test to be conducted, special arrangements at least 72 hours
in advance of the test shall be made with the administrative authority so
that a representative from the Municipal Engineer's office may be present
to observe the test procedure. The pit-bailing test shall not be used when
a twenty-four-hour stabilized water table is within five feet of the ground
surface unless the stabilized water table is verified by a hydraulic head
test.
|
(3)
|
An inspection port extending to finished grade shall be provided over
each tank or compartment inlet and outlet which is not directly below a manhole,
except for those where a septic solids retainer is used. Inspection ports
shall extend to finished grade, shall be constructed of Schedule 40 polyvinyl
chloride (PVC) pipe designed for usage, among other uses, in a septic system
and shall have a locked or bolted cap.
|
(i)
|
Reserve area required.
| ||
i.
|
No permit for the location and construction of a new subsurface sewage
disposal system shall be issued unless the applicant shall have performed
a minimum of two acceptable soil profile pits and one acceptable permeability
test in the primary area and a minimum of two acceptable soil profile pits
and one acceptable permeability test for a reserve or replacement disposal
area. The requirement for proving a reserve disposal area shall not apply
to repairs, alterations or replacements of existing septic systems, existing
lots of record that will be developed as an individual single-family residence,
nor to development applications which are pending municipal approval on or
before the effective date of this chapter.
| ||
ii.
|
For subdivision purposes, all proposed lots and lands remaining of less
than six acres that do not have a satisfactorily operating septic system shall
have the required tests completed for both the primary and reserve disposal
areas, except where the proposed lot(s) are deed-restricted from development.
| ||
iii.
|
There shall be a minimum separation of 30 feet between the primary test
area and the reserve or replacement test area. Location and spacing of tests
for the primary and the reserve areas shall conform to the requirements of
N.J.A.C. 7:9A-5.2 as herein revised. The applicant shall show and identify
all soil logs and tests on the plat or site plan, and designate which permeability
tests and soil logs are associated with the primary area, and which permeability
tests and soil logs are associated with the reserve or replacement area.
| ||
iv.
|
The footprint of the reserve or replacement disposal area shall be equivalent
to 100% of the proposed primary disposal area, shall meet all the requirements
applicable to the primary disposal area and shall be outlined on the plat
or site plan by a heavy dashed line marked "Reserved for Disposal Area Expansion
or Replacement." No improvements or structures shall be installed or located
within or adjacent to this reserved area, which may adversely affect its future
use as a disposal area.
| ||
v.
|
Failure to provide a suitable and adequate reserve and replacement area
where required by this chapter shall constitute sufficient grounds for rejection
of a development application which relies on subsurface sewage disposal.
|
(d)
|
When soil tests taken in different parts of the disposal field yield
different results, the system shall be designed based upon the most restrictive
conditions found within the area of the disposal field. The minimum required
disposal field bottom area for gravity or pressure dosing shall be 1.61 square
feet per gallon per day for disposal beds and 0.65 linear feet per gallon
per day for disposal trenches having widths of 1.5 feet; 0.54 linear feet
per gallon per day for disposal trenches having widths of 2.0 feet; 0.46 linear
feet per gallon per day for disposal trenches having widths of 2.5 feet; and
0.40 linear feet per gallon per day for disposal trenches having widths of
3.0 feet, respectively.
|