A.
ENGINEERED
DISPOSAL SYSTEMS
Scope: This Section governs the design and installation of
engineered systems with design flows of 2,000 gpd or more or disposing of
wastewater with a combined BOD5 and total suspended solids concentration
greater than 1,400 mg/l (see Table 5B).
1. Responsibilities
a. General: The size and/or complexity of
engineered systems require that analysis, design construction, operation, and
maintenance be undertaken at a level that is higher than the minimum
requirements for small residential systems.
b. Owner/operator: The owner/operator shall
accurately describe the intended uses (present and future) for the system and
designate to the Department a Maine professional engineer to serve as design
engineer. The owner shall operate the system within the design parameters,
except as provided for in Section
10(A)(3), following
the designer's recommendations for inspection and maintenance, as well as any
State or local regulations.
c.
Design engineer: The design engineer is responsible for defining the needs of
the client, investigating the site, designing the system, overseeing
construction, and recommending operation and maintenance practices at an
appropriate level of professional practice. In order to ensure proper
functioning of the engineered systems under expected conditions, the design
engineer must consider relevant factors, including, but not by way of
limitation, peak effluent levels, minimum recharge, deep frost and power
failure. The design engineer is responsible for completing the HHE-220 to
document and define the system design prior to construction, as well as the
report results of a site investigation. The design engineer must then send the
completed HHE-220 to the Department.
d. Department of Health and Human Services:
Upon receipt of the HHE-220 by the design engineer, the Department will conduct
a desk review of the proposal, check for completeness of submittal (all
necessary documents and signatures), review the reasonableness of data and
assumptions, spot-check calculations, check for compliance with minimum
requirements of this rule and this Section, and give permission to the local
government to issue the necessary permits. The Department is not responsible
for the accuracy of the field data, assumptions or conclusions of the designer,
the suitability of the design, or its performance. The Department of
Environmental Protection (DEP) may provide assistance to the Department in
evaluating environmental impacts of these systems. DEP may submit comments to
the Department for consideration, prior to final decision.
e. Local government: The local government,
operating through the LPI(s), may issue the necessary permit(s) after it has
received permission from the Department to do so and when it is satisfied that
the pre-construction conditions shown on the design are representative of the
actual conditions. The local official may inspect the site in a timely manner,
in order to be able to state with reasonable assurance that the system was
installed as described in the approved plans.
2. Requirements For Engineered Disposal
System Designs
a. Department approval: An
engineered system requires Department approval. A preliminary discussion
between the Department, the design engineer and any other consultants, as
appropriate, will take place, to identify any specific requirements related to
the application before a final submission for review and approval is made. From
the preliminary discussion through acceptance of the Engineer's statement of
compliance, the design engineer will be the primary point of contact.
b. Plan submission: The plans submitted to
the Department must contain all the information requested on the Engineered
System Application Form, required in Section
6, and any specific requirements
identified in the preliminary discussion, in addition to meeting the
requirements of this Section. A digital copy of the plans in PDF format is
required for submission of the Engineering System Application Form to the
Department.
c. Definition of the
facility served: The submission must define the facility to be served, the flow
of the effluent (including variations in quality and quantity), and the current
and projected uses of the facility. Design flows should be measured, estimated,
and compared to historical (code) values, and safety factors should be
used.
d. Determination of soil and
site conditions: The soil conditions must be determined by a Licensed site
evaluator. The submission must show site data that represents the soil
conditions under the proposed disposal field as indicated in Section
5(Q)(11) and under
the down slope fill extension. The level of investigation is a function of the
basic quality of the site (topography and soils) and the relative size of the
system and disposal fields. Observation holes used for design purposes must be
located at representative points within the proposed subsurface wastewater
disposal area.
e. Minimum number of
observation holes: The number of observation holes must be sufficient to
determine the soil and site characteristics beneath the entire disposal field,
including the down slope fill material extensions, but must not be less than
three observation holes per engineered disposal field.
f. State of the art designs: The submission
must be based on current acceptable practices as it relates to the design of
systems.
g. Contour lines: The
submission must include: surficial contours, elevation of observation holes,
and location of all site features within 300 feet that require consideration.
Pre-development and post-development contours must be shown both in the areas
to be occupied by parts of a system and for a distance of 100 feet beyond the
system. The contour intervals must be no greater than two feet.
h. Elevations: The elevation of the bottom of
the disposal field(s), the original ground surface at each observation hole,
and the top of the distribution pipes or proprietary disposal devices within
the disposal field(s), must be established.
i. Localized mounding analysis: The
submission must include an analysis of the proposed system design and site
hydraulics to determine that there will be an adequate vertical separation
between the bottom of the disposal field and any mounded water table. This
analysis must include all calculations, justification of methodology and
assumptions, and other supporting data and documentation. Any additional
vertical separation distance needed to offset mounding effects and maintain
compliance with Table 5F must be stated in the mounding analysis
report.
j. Site transmission
analysis: The submission must include an analysis of the proposed system design
and site hydraulics to determine that the native soil and/or fill material will
have sufficient capacity to prevent wastewater from surfacing down gradient of
the disposal field. This standard does not include normal discharges of
groundwater to springs, major or minor watercourses, or other surface waters
and wetlands located at or beyond setback distances established in Sections
8 and
9, or lesser setbacks approved by
variance, even if these discharges may contain some amount of treated
wastewater. Nothing in this paragraph may be interpreted to limit the scope or
enforcement of
38 MRS
§413, or other applicable
statutes.
k. Operations and
Maintenance Manual: The submission must include an operations and maintenance
manual for the owner with written recommendations for the operation and
maintenance of the system, including inspection schedules, pumping schedules,
and record keeping procedures. Manufacturer's operations and maintenance
manuals for devices and/or equipment may be included in this exhibit but must
not be a substitute for the exhibit.
l. Pertinent laws, etc.: The submission must
include evidence of compliance with all pertinent laws, ordinances, and
regulations.
m. Signatures: The
submission and plans must bear the seal of a professional engineer licensed in
Maine and the soil logs should bear the signature of a site evaluator licensed
in Maine.
n. System: The proposed
system must be sized in compliance with Sections
5 and
7. It must meet the minimum setback
distances in Tables 8B or 9A as appropriate
o. Grades: Existing and finished grade within
the area of engineered disposal fields, their shoulders and fill material
extensions using relative elevations, referenced to a permanent system
elevation reference point, must be provided;
p. Reserve area for first-time systems: A
reserve area with suitable soil conditions must be delineated on the plan and
reserved for the possible expansion or replacement of the proposed engineered
system.
q. Pump dose volume: For
engineered systems the pump-on and pump-off switches must be set at appropriate
levels to provide a dose volume as required by the manufacturer. The pump-off
switch must be set 6 inches above the pump intake. The pump-on switch must be
set at a distance "d", in inches above the pump-off switch, which is calculated
by means of Equation 11A.
Equation 11A
D = [1.6][Vd+Vap+Vpd]/[A] where:
D is the inches above the pump-off switch;
Vd is the required dose volume, in gallons,
determined as prescribed in Section
7(Q)(4).
Vap is the internal volume of all distribution pipes
and connector piping that will drain back into the dosing tank at the end of a
dosing cycle, in gallons;
Vpd is the volume displacement, in gallons, of the
pump and controls; and
A is the internal horizontal area of the dosing tank,
in square feet.
|
r.
Site location map: The submission must include a copy of the relevant section
of the USGS 7.5-minute topographic map, if available, or 15-minute topographic
map showing the location of the proposed engineered disposal system. The map
must also indicate locations of any public and private water supply wells
within 300 feet of the system and a demonstration of right, title or interest
to the property in question.
s.
Other information: The Department may request additional information from the
applicant through the design engineer. If the applicant fails to provide any
additional information requested by the Department within 180 days of the
request, the application will automatically be denied.
3. Installation and Inspection
a. Engineered system permit issuance: The LPI
shall not issue a permit for an engineered system without first receiving a
letter of approval from the Department.
b. Construction inspections: The LPI must
inspect engineered disposal systems in accordance with Section
12(I). In addition,
the property owner shall retain the design engineer to inspect the construction
of the system. The inspection must be sufficient for the engineer to determine
that the system was installed as designed.
c. Engineer's statement of compliance: The
design engineer shall submit a written statement that the system was installed
in compliance with this rule and permit conditions to the LPI, the owner and
the Department. Any changes from the approved drawings and specifications must
be noted.
B.
EXPERIMENTAL SYSTEMS
1. General.
A permit for an experimental system is contingent upon the establishment of a
monitoring program by which system performance can be demonstrated. At a
minimum, all experimental systems must be capable of operating at the same
degree of efficacy and reliability as any authorized alternative appropriate
for the site. Any variance issued will require that the system be altered if
such efficacy and reliability are not obtained, in order to bring performance
up to standard, or, if such alteration is not feasible, that the system must be
abandoned.
2. Applicants shall
demonstrate: Requests for the installation of experimental systems may be
granted by the Department if it is demonstrated that the conditions set forth
in this Section can be met.
a. Backup design:
An authorized design can be installed on the property for which an experimental
system is proposed. The backup system design must be recorded with the county
registry of deeds;
b. Meets the
intent of this rule: The proposal is designed to protect public health, prevent
the creation of any nuisance, and prevent environmental pollution to the same
extent as the authorized design approved for the property;
c. Sound engineering principles: The proposed
design is shown to be based on sound engineering principles and can be expected
to provide the same level of protection to public health and the environment as
offered by the authorized design that could be installed on the property;
and
3. System
performance: If the system does not perform so that it meets the purposes of
this rule, the applicant (or current owner) will expeditiously abandon the
experimental system and install the backup system meeting all the requirements
of this rule.
4. Approval: There
are levels of approval for experimental systems: Pilot, Provisional, and
General Use. All Pilot and Provisional experimental system designs must be
approved by the Department prior to installation.
a. Pilot approval: Pilot approval allows an
applicant to demonstrate the general ability of a proposed experimental system
to treat wastewater as defined in the Rules. No less than 10 installations of a
specific experimental system must be granted Pilot system approval by the
Department. Pilot approvals must be limited to sites which do not otherwise
require any variance or waiver to the Rules. On no less than a bi-weekly basis
for a period of not less than six months, and once per month for at least an
additional six months, the applicant shall test the influent and effluent of
each installed experimental system for the following parameters: five day
Biochemical Oxygen Demand (BOD5), Total Suspended Solids (TSS), Nitrate
Nitrogen (N03), Nitrite Nitrogen (NO2), Total Kjeldahl Nitrogen (TKN), Ammonia
Nitrogen (NH4), and coliform bacteria. The results of these tests must be
submitted to the Department on no less than a quarterly basis. Historic data
from other jurisdictions may be submitted, if available. If such data are
satisfactory, the applicant may bypass Pilot approval and proceed to
Provisional status.
b. Provisional
approval: Provisional approval allows an applicant to demonstrate ability of a
proposed experimental system to operate under a broader range of site
conditions and to provide a larger number of data sources for such
demonstration. No less than 50 installations of a specific experimental system
must be granted Provisional system approval by the Department, of which 10 may
be Pilot systems previously approved by the Department. Provisional approvals
must not be granted until all the Pilot systems have been in operation for at
least one year except as otherwise provided by Section
11(B)(4)(a).
Provisional approval installations may include sites which require a variance
or waiver to the Rules, with the provision that such variances or waivers are
also subject to the standard variance requirements of the Rules, i.e., a
passing point score for soils related variances, etc. On no less than a monthly
basis for a period of not less than one year, the applicant shall test the
influent and effluent of each installed new or experimental technology system
for the following parameters: five day Biochemical Oxygen Demand (BOD5), Total
Suspended Solids (TSS), Nitrate Nitrogen (N03), and coliform bacteria. The
results of these tests must be submitted to the Department on no less than a
semi-annual basis. Existing data from other jurisdictions may be submitted, if
available. If such data are satisfactory, the applicant may bypass Provisional
approval and proceed to General Use status.
c. General Use: To receive General Use
approval for an experimental system, the applicant shall demonstrate that the
50 systems installed under Provisional approval have operated as designed and
intended. Upon such demonstration, the provisionally approved new or
experimental technology under consideration must be granted written General Use
status approval for use in Maine and shall be included in the next revision of
this rule.
d. Failure to Perform:
In the event that an experimental system fails to perform, as claimed by the
applicant, use of the experimental system in Maine, including all installations
pursuant to this rule, must cease. Use of the experimental systems must not
resume until the applicant and the Department have reached a mutually
acceptable agreement for resolving the failure to perform as claimed, or the
back-up reserve replacement system must be
installed.
C.
MULTI-USER DISPOSAL SYSTEMS
1.
Scope: This Section governs a multi-user (common) system designed to serve
three or more parcels with structures under individual and separate ownerships
and when the disposal system is not owned entirely by one of the
parties.
2. Intent: A multi-user
system has unique problems, including the determination of the responsible
parties for repairs and other costs. Therefore, this Section sets forth
requirements for a multi-user system in response to these problems.
3. Ownership
:
a. General: Ownership of all parts of the
multi-user system beyond the building sewer must be vested in a single and
independent, legally established entity under Maine law.
b. Maintenance fees: The entity may charge a
maintenance or other fee to ensure sufficient capitalization to meet its
responsibility to maintain the multi-user system.
c. Maintenance: The entity shall be liable
for the operation, maintenance, repair, or replacement of all parts of the
system beyond the individual building sewers. It shall keep the system free of
any nuisance or threat to public health or contamination of the
environment.
d. Right of entry: The
entity shall have the right by easement to enter upon properties that are tied
to the system for the purpose of servicing, maintaining, repairing, or
replacing all parts of the common system.
e. Authority to maintain system: The entity
shall also have an access easement recorded against the properties associated
with, or necessary for, the system. This easement must provide for servicing,
repairing, or replacing all parts of the common system. The easement must also
provide the authority to enter upon the area of the system and to enlarge or
replace the system, should such enlargement or replacement be deemed necessary,
or if the LPI orders such action for the purpose of abating a public
nuisance.
4. Installation
and Inspection
:
a. Multi-user
disposal system permit issuance: The LPI may not issue a permit for a multiuser
disposal system without first receiving a letter of approval from the
Department.
b. Construction
inspections: The LPI must inspect the multi-user disposal system in accordance
with Section
12. In addition, the entity must
retain the site evaluator or professional engineer to inspect the construction
of the system. The inspection must be sufficient for the site evaluator or
professional engineer to determine that the system was installed as
designed.
c. Inspectors Statement
of Compliance: The Department will provide the LPI with a form to be given to
the entity which owns the multi-user system, at the time of issuing the permit.
This form may be used by the owner or owner's agent to obtain a written
statement from the installer or the designer, if supervising the installation,
that the system was installed in compliance with this rule and the conditions
of the permit. If used, a signed copy of the completed form must be submitted
to the municipality.
D.
PEAT DISPOSAL SYSTEMS
1. Scope: This Section governs the design and
installation of peat disposal systems and filters. The following sections give
specifications for site-built peat systems.
2. General: The complexity of site-built peat
systems require that analysis, design construction, operation, and maintenance
be undertaken at a level that is higher than the minimum requirements for small
residential systems.
3. Suitable
sites: Suitable sites for installing peat disposal fields are the same as for
other types of disposal fields. See Sections
5,
9 and
10.
4. Site preparation: Site preparation for
peat disposal fields must be the same as it is for any disposal field
authorized under this Code. See Section
12.
5. Peat disposal field design and
installation requirements.
a. Weather: Peat
disposal fields must not be installed when the ground or the peat material is
frozen.
b. Low pressure
distribution: Low pressure distribution is not allowed in peat disposal
fields.
c. Minimum width: The
minimum width of a peat disposal field is 5 feet.
d. Maximum width: The maximum width of a peat
disposal field is 20 feet.
e.
Maximum length: The maximum length of a peat disposal field is 50 feet with end
manifold and 100 feet with central manifold.
f. Distribution pipe sizing: Gravity dosed
distribution pipes must consist of 4 inch diameter perforated pipe.
g. Distribution pipe placement and bedding:
The distribution pipes and bedding in peat disposal fields must meet the
following requirements:
i. Distance from outer
limits: The distribution pipes must be installed 2.5 feet from the outer limits
of the peat disposal field;
ii.
Distance center-to-center: The distribution pipes must be 2.5 feet on
center;
iii. Connecting the ends of
each distribution pipe: The distribution pipes must be connected at each end
with solid piping;
h.
Distribution box: If a distribution box is used it must be located outside the
limits of the peat and meet the requirements of Section
7(O);
i. Stone beneath and on the sides of the
distribution piping: The distribution pipes must be installed over the center
line of a 10-inch wide and 4-inch deep layer of 3/8-inch washed crushed rock.
Additional 3/8-inch washed stone must be placed on either side of the pipe to a
3-inch width. All stone must be washed before its delivery to the site. No
stone may be placed above the pipe, nor may stone extend beyond 5 inches from
the center of the pipe;
j. Stone
under the peat: A minimum of 6 inches of 3/8-inch clean crushed rock or clean
coarse sand must be placed at the bottom of the disposal bed.
k. Depth of peat: There must be a minimum of
24 inches of peat below the bottom of the distribution lines and a minimum of 8
inches of peat above the top of the distribution lines.
6. Compaction of the peat: The depth of peat
layers depends on the moisture content at the time of the installation. At 50
percent moisture content (on a dry weight basis), install in 8-to-12-inch
lifts. At 60 percent moisture, install in 12-to-16-inch lifts. The peat lifts
should be hand raked and compacted until an in-place bulk density of 6.2 to 9.4
pounds/cubic foot (on a dry-weight basis) is reached. No motorized construction
equipment or lawn rollers may be used to compact the peat.
7. Surface treatment: No fill material may be
placed over the top of the peat. Instead, the peat must extend to the mineral
soil surface of the original ground, or the fill on each side, and must be
crowned at a slope of 3%. The surface of the peat may be left bare, seeded with
lawn grasses, or planted with shallow rooted vegetation so as to blend into the
natural surroundings. Deep-rooted vegetation must not be allowed to grow on the
surface of a peat disposal field.
8. Vehicular and pedestrian traffic: No
portion of any peat disposal field may be located under a paved area, driveway,
or roadway.
9. Type of peat: The
peat should be air-dried, milled, unscreened, bulk-loaded Sphagnum peat with a
pH of 3.5 to 4.5, a von Post degree of decomposition of H4, a moisture content
of 50% to 60%, an organic content of 95% or greater, and an ash content of 5%
or less. The peat must not have been dried to less than 40% at any time during
production. Use of horticultural peat for onsite disposal systems is
prohibited.
10. Sizing of peat
disposal fields: Soil profile vs. peat disposal field application rates: The
required bottom area of peat disposal fields must be determined using the
following:
a. Soil profile 6: Soil profile 6
requires a peat disposal field application rate of 1 square foot per gallon,
per day;
b. Soil profiles 4 and 5:
Soil profiles 4 and 5 require a peat disposal field application rate of 1.25
square feet per gallon, per day;
c.
Soil profiles 2, 3, and 7: Soil profiles 2, 3, and 7 require a peat disposal
field application rate of 1.50 square feet per gallon, per day;
d. Soil profiles 1 and 8: Soil profiles 1 and
8 require a peat disposal field application rate of 1.75 square feet per
gallon, per day;
e. Soil profile 9:
Soil profile 9 requires a peat disposal field application rate of 2.0 square
feet per gallon, per day;
f. Soil
profile 11: Soil profile 11 is for alluvial soils that vary in texture. For
design purposes, the peat disposal field application rate shall be used from a
soil profile listed above which best describes the texture encountered; and
g. Site suitability: Site
suitability for peat disposal fields is as prescribed in Section
5.
11. All other aspects: In all other aspects,
construction of a peat disposal field must comply with Section
7, unless otherwise
specified.
12. Fencing: Fencing is
required in heavy-foot traffic areas, such as school playgrounds, commercial
establishments, or vehicular-traffic travel areas.
13. Mowing: If a peat disposal field is
planted with lawn grasses, it must be mowed on a regular basis during the
growing season with a walk-behind power or manual mower.
14. Traffic: In addition to the above, peat
disposal fields must be protected from the type of heavy foot traffic found on
a school yard, playground, or ball court. Riding mowers, ATVs, snowmobiles, and
other vehicles must be prohibited on peat disposal fields.
15. Maintenance instructions: System owners
shall be provided with a copy of the operation and maintenance requirements by
the site evaluator.
16.
Responsibilities: The complexity of site-built peat systems requires that
analysis, design construction, operation, and maintenance be undertaken at a
level that is higher than the minimum requirements for small residential
systems.
a. Owner/operator: The owner/operator
shall accurately describe the intended uses (present and future) for the
system. The owner shall operate the system within the design parameters, as
well as any relevant state or local regulations.
b. Design engineer: The design engineer is
responsible for defining the needs of the client, investigating the site,
designing the system, overseeing construction, and recommending operation and
maintenance practices at an appropriate level of professional practice. The
design engineer shall assure that the system, if installed and operated within
the design parameters, will function properly and in compliance with all
pertinent regulations in effect or known at the time of construction. The
design engineer shall review the proposed design to assure proper functioning
under expected conditions, including, but not limited to, peak effluent flows,
high water levels, minimum recharge, deep frost, power failure, etc.
c. Department of Health and Human Services:
The Department will conduct a desk review of the proposal, check for
completeness of submittal (all necessary documents and signatures, etc.),
review the reasonableness of data and assumptions, spot-check calculations,
check for compliance with minimum requirements of this Code and this Section,
and give permission to the local government to issue the necessary permits. The
Department is not responsible for the accuracy of the field data, assumptions
or conclusions of the designer, the suitability of the design based upon
assumptions or conclusions of the designer, or the performance of the
system.
d. Local government: The
local government operating through the LPI(s), will issue the necessary
permit(s) after it has received permission from the Department to do so and
when it is satisfied that the pre-construction conditions shown on the design
are representative of the actual conditions. The local official shall inspect
the site in a timely manner in order to be able to state with reasonable
assurance that the system was installed as described in the approved
plans.
17. Department
approval: A site-built peat system requires Department approval.
a. Plan submission: The plans submitted to
the Department shall contain all the information required in Section
5, in addition to meeting the
requirements in this Section. A digital copy of the plans in PDF format must be
submitted with the Engineering System Application Form.
b. Definition of the facility served: The
submission must define the facility to be served (i.e., residential,
commercial, etc.), the flow of the effluent (including variations in quality
and quantity), and the current and projected uses of the facility.
c. Determination of soil and site conditions:
The soil conditions must be determined by a licensed site evaluator. The
submission must show site data that represents the soil conditions under the
proposed disposal field as indicated in and the soils conditions in the down
slope fill extension of engineered disposal systems. The level of investigation
is a function of the basic quality of the site (topography and soils) and the
relative size of the system and disposal fields. There must be sufficient
knowledge of the site to determine how the system will perform.
d. Elevations: The elevation of the bottom of
the disposal field(s), the original ground surface at each observation hole,
and the top of the distribution pipes within the peat disposal field(s) must be
established.
e. Pertinent laws,
etc.: The submission must include evidence of compliance with all pertinent
laws, local ordinances, and other regulations.
f. Signatures: The submission and plans must
bear the seal and/or signature of a site evaluator licensed in Maine.
g. System: The proposed system must be sized
in compliance with Section 5, and Section
8. It must meet the minimum setback
distances in Sections
9 and
10.
h. Grades: Existing and finished grade within
the area of site-built peat systems, their shoulders and fill material
extensions using relative elevations referenced to a permanent system elevation
reference point;
i. Other
information: The Department may request additional information from the
applicant. If the applicant fails to provide any additional information
requested by the Department within 180 days of the request, the request will
automatically be denied.
E.
WASTE DISCHARGE FROM RESIDENTIAL
WATER SOFTENERS AND IRON SYSTEMS
1.
Scope: This Section governs the discharge of water softeners and iron systems
for single-family and duplex residential dwellings only.
2. Intent: Residential water softeners and/or
iron removal system discharge may impact subsurface wastewater septic systems
beyond the control of the homeowner and site evaluator, due to brine or iron
entering the system and deteriorating the concrete components. These components
may also cause premature clogging of filters and proprietary devices and
possibly forming an impermeable layer on the bottom of the disposal field,
which may result in a premature malfunction of the system. Discharge from such
residential removal systems is classified as de minimus and may be daylighted
or discharged by the following required methods;
a. If a water treatment system is anticipated
at the home, then the backwash discharge may be incorporated into the design of
the septic system. However, if the water treatment system is installed after
the septic system is built and the leach field is not designed to accommodate
the backwash water then alternate methods of disposal may be used.
b. These alternative methods do not require a
test pit, plans by a subsurface disposal system designer, fees or formal
review, unless required by the Municipality and may include discharging on top
of the ground.
3.
Conditions for alternative disposal approval.
The treatment system design must consider the amount of water
used. If the backwash is not discharged to an approved septic system, and an
alternative disposal method is used, then the disposal area must be capable of
receiving and infiltrating all wastewater without flooding. In addition, the
discharge must meet the following conditions:
a. Infiltrate all water on-site and not cause
erosion, siltation; or a discrete (channelized) runoff;
b. Not discharge to a surface water or
wetland;
c. Include water treatment
system wastewater only. No discharge of black water, graywater, or laundry
water to a separate drywell is permitted;
d. Follow all SSWW first time system criteria
setbacks, including 100 feet from potable water supplies and 300 feet from
public potable water supplies;
e.
Not render groundwater undrinkable on any adjacent properties;
f. Not flow directly into a storm drain
system that carries the discharge to a surface water body or into a municipal
sewer system. The discharge is allowed directly to a municipal sewer system,
only if authorized by the receiving facility;
g. Not impact abutting properties such that
the point of daylighted discharge and area of infiltration extend across
property boundaries; and
h. Have
enough vegetated buffer in the area to infiltrate the discharge and not cause
channeling or erosion.
The Municipality reserves the authority under local ordinance
to require the treatment unit discharge to empty into a septic system or grey
water disposal system.