[Adopted as Section 7 of the Plainville Board of Health Regulations]
A copy of all applications, reports, plans, specifications,
data, and supporting documents required by these regulations and by
the regulations of any other agency in connection with the approval
or operation and maintenance of the subject facility shall be submitted
to the Plainville Board of Health. In the case of requests for a Plainville
Board of Health action, such materials shall be submitted a minimum
of 90 days prior to the date upon which an action by the Plainville
Board of Health is desired. In the case of submittals to other agencies,
all material shall be submitted to the Plainville Board of Health
at the time of submittal to that agency. A Plainville Board of Health
system works construction permit will not be issued prior to approval
by the Massachusetts Department of Environmental Protection. Other
submittals shall be made in accordance with schedules as specifically
designated by the Plainville Board of Health.
Certain basic principles shall be considered early in the planning
and design process in order to ensure that the SWWTP development process
will meet all requirements.
A. Environmental compatibility.
(1) The plans for the proposed system or facility shall take into account
all aspects of the public health and environmental quality protection.
Efforts shall be taken to preserve water supply, private property,
wetlands, wildlife habitat, recreational sites, historic sites, and
natural beauty.
(2) The design shall be prepared so as to have the least possible adverse
impact on the public health and the environment.
(3) The project proposal shall include evidence that the wastewater system
or facility will result in the least adverse impact on the public
health or the environment as compared with other possible wastewater
management alternatives for the project.
B. General discharge and treatment requirements. No discharge from a
SWWTP shall result in degradation of ground- or surface waters in
a manner inconsistent with their proposed use. There shall be compliance
with all applicable water quality standards. The existing characteristics
of the receiving waters must be considered to ensure compliance. There
shall be no discharge into any wetland, stagnant waters, lakes, or
streams.
C. Hydrogeological investigation. The applicant shall submit a hydrogeological
survey report, prepared by a qualified geotechnical engineer or hydrogeologist,
to show the impact of the subsurface discharge of the SWWTP on groundwater.
The report shall include a determination of the flow direction, contaminant
levels, extent of wastewater discharge plume, ground- and surface
waters affected, and any interaction with water supply, public or
private. This analysis shall be performed for the SWWTP design plan
and also for any other viable wastewater treatment or disposal strategy
for the project to be served.
D. Wetlands and floodplains.
(1) No portion of the SWWTP shall fall within 100 feet of wetlands or
the one-hundred-year floodplain. No portion of the subsurface disposal
works for a SWWTP shall be located less than 200 feet from a wetland
or the one-hundred-year floodplain. No component of the treatment
plant, except for underground piping, shall be constructed less than
two feet above the high water level in any area subject to flooding.
(2) Such distances are considered "minimum" and may be increased by the
Plainville Board of Health if site-specific conditions warrant.
E. General siting and design requirements.
(1) SWWTP design shall include attenuation of odor or noise problems,
and shall satisfactorily address the general aesthetic appearance,
to both protect the operator and to satisfy neighborhood environmental
requirements.
(2) Distances. No portion of the SWWTP shall be located less than the
following distances stated to the components listed as follows:
|
Minimum Acceptable Separation Distances in Feet
|
---|
|
Component
|
Plant Buildings
|
Pumping Station
|
Subsurface Tank
|
Leaching Area
|
Sewer or Force Main
|
---|
|
Well*
|
100
|
100
|
100
|
400
|
50
|
|
Water supply line
|
—
|
10
|
10
|
25
|
10
|
|
Dwelling unit
|
100
|
50
|
50
|
100
|
—
|
|
Subsurface drain
|
—
|
25
|
25
|
50*
|
5
|
|
Property boundary
|
150
|
50
|
50
|
100
|
10
|
|
Subsurface water*
|
100
|
100
|
100
|
200
|
50
|
|
Wetland*
|
100
|
100
|
100
|
200
|
50
|
|
NOTES:
|
---|
|
*
|
This distance may be required to be greater if the hydrogeological
evaluation indicates that contamination will occur at the stated distance.
|
F. Ultimate disposal of sludge and solids:
(1) Provision for final or ultimate disposal of sludge and solids shall
be clearly indicated and established. The estimated quantity must
be stated; if sludge and solids are to be disposed of off site, the
final destination must be established prior to issuance of any permit.
The applicant must demonstrate, to the satisfaction of the Plainville
Board of Health, that the destination for the sludge and solids is
in compliance with all applicable federal, state, and local regulations
and, also is that it will reliably be available for such purpose for
the length of time that its use is required for the SWWTP.
(2) If disposal is to be on site, it must comply with the terms of Subsection
B above, General discharge and treatment requirements.
G. Treatment plant reliability.
(1) The SWWTP shall be planned and designed so as to provide for maximum
reliability at all times. The facility shall be capable of operating
satisfactorily during power failures, flooding, peak loads, equipment
failure, and maintenance shutdowns. Such reliability shall be obtained
through the use of various design techniques which will result in
a facility which is virtually "fail safe."
(2) Multiple units or dual compartments with unit drains shall be provided
for all processes, including disinfection facilities, so that draining,
cleaning, repairing, or replacing, and other maintenance can be provided
without omitting any treatment processes.
H. Bypasses and overflows. No bypasses, either upstream of or at the
SWWTP, shall be permitted.
I. Disinfection. Disinfection of the SWWTP effluent by ultraviolet irradiation
or ozonation shall be required.
The lateral sewer system serving the SWWTP shall be of a design
and construction in accordance with Water Pollution Control Federation
Manual of Practice No. 9. Adequate capacity shall be provided for
peak flow rates and shall provide for a cleansing velocity of at least
two feet per second at 75% of the estimated peak discharge. For low
service connection areas, peak flow rate shall be calculated by the
fixture unit method as described in MOP No. 9. The minimum pipe size
allowed shall be eight inches in diameter.
Effluent limitations shall be as required by DEP regulations
for Class I and Class II groundwaters. All groundwaters are considered
to be in this classification unless proved to be otherwise following
procedures set forth by DEP.
A. Wastewater.
(1) Treatment plant influent. The influent to the treatment plant shall
be sampled and tested weekly for five-day biochemical oxygen demand
(BOD) and total suspended solids.
(2) Treatment plant effluent.
(a)
The effluent from the treatment plant shall be sampled and tested
as follows:
|
Daily
|
Flow
|
pH
|
Specific Conductance
|
|
Weekly
|
5-day biochemical oxygen demand (BOD)
Total suspended solids (TSS)
Coliform bacteria
Fecal coliform bacteria
|
|
Monthly
|
Total Kjeldahl nitrogen
Ammonia Nitrogen
Nitrate Nitrogen
Total Dissolved Solids
Sodium
|
|
Semiannually
|
Oil and grease
Volatile Organic Compounds (USEPA Procedure No. 624)
|
|
Annually
|
Arsenic
|
Copper
|
|
Barium
|
Zinc
|
|
Cadmium
|
Mercury
|
|
Chromium
|
Total Trihalomethanes
|
|
Fluoride
|
Selenium
|
|
Lead
|
Silver
|
|
5 Years
|
Pesticides
|
|
Radioactivity
|
(b)
All sampling and analysis, except for the daily and weekly frequency
tests which will commence at time of plant startup, shall be performed
initially at 60 days after plant startup and at the stated frequency
thereafter.
B. Groundwater monitor wells.
(1) Monitoring well testing in the up-gradient and down-gradient wells
shall be performed semiannually in the months of April and September
for all parameters designated above as semiannually or more often.
Testing for other parameters shall be at the stated frequency, either
annually or every five years during the month of April.
(2) On an annual basis, the Plainville Board of Health, either on its
own motion or upon written request from the permittee, may review
the sampling frequency and the tested parameters and may modify either
or both if it deems it necessary.