All costs and expenses incidental to the installation of the
building sewer and connection of the building sewer to the Wastewater
Management System shall be borne by the owner(s). By written instrument
approved by the Commission, the owner(s) shall indemnify and hold
the Town harmless from any loss or damage that may directly or indirectly
be occasioned by the installation of the building sewer.
A.
The plumbing of any existing or new building shall be so constructed
as to keep all stormwater, surface water, groundwater, roof and surface
runoff, subsurface drainage, cooling water, and industrial process
water, non-contact cooling water, and non-contact industrial process
water separate from sanitary sewage and industrial wastes, and from
the building sewer.
B.
The building drain conveying wastewater from plumbing fixtures within
the building shall discharge to a building sewer, while the building
drain conveying stormwater and other drainage shall discharge to a
building storm drain.
C.
Connection of a building sewer to a storm drain is strictly prohibited.
Connection of an individual wastewater disposal system, whether
directly or indirectly, to the Wastewater Management System is prohibited.
The Commission may request that the connection be dye tested
by the Commission, or by the owner or the owner's designee in the
presence of a Commission inspector, to establish that the building
sewer is properly connected to the Town's Wastewater Management System.
The Commission may conduct dye testing of an existing building sewer
to establish that it is properly connected to the Town's Wastewater
Management System. The Commission may require the owner forthwith
to eliminate a connection from a building sewer to a storm drain (also
referred to as an illegal connection) at the owner's expense. The
Commission may also require the owner forthwith to eliminate a connection
from a building storm drain to a sanitary sewer at the owner's expense.
All existing or new building drains from plumbing fixtures liable
to backflow from the Wastewater Management System shall be required
to have backwater valves installed at the owner's expense. Any plumbing
fixture located at an elevation below the top of the manhole on the
Commission sewer serving the fixture shall be considered to be liable
to backflow. Backwater valves shall be installed in accordance with
the Uniform State Plumbing Code, 248 CMR 2.09(4) and the Commission's
Requirements for Site Plans.
Where a new building is to be constructed which is set back
from the property line, or where a building sewer is required to be
angled more than 45° the Commission shall require the owner to
install a cleanout on the portion of the building sewer on the owner's
property at the property line.
A.
Grease traps shall be required on sewers which discharge directly
or indirectly to the Town's Wastewater Management System and into
which significant amounts of animal or vegetable fat, oil or grease
may be discharged so that a discharge concentration does not exceed
100 milligrams per liter. Such devices shall not normally be required
for private dwelling units.
B.
The owner is responsible for the installation of a grease trap if one is required to achieve the standard set forth in Subsection A. If the owner has not installed a grease trap when one is required by these regulations, the Commission may impose penalties in accordance with Article XI of these Regulations. All grease traps shall be of a type, capacity, location and construction approved by the Commission and shall be located so as to be readily accessible for maintenance and inspection.
C.
Installation of a dedicated building drain and an in-line grease
trap shall be required to serve all fixtures from which fat, oil or
grease may be discharged whenever there is sufficient space and adequate
plumbing to incorporate the appropriate facilities as determined by
the Commission. Point of use grease traps may be required instead
of, or in addition to, an in-line grease trap for discharges from
dish washer rinse sinks, pot sinks, floor sinks and drains, automatic
hood washes, soup and tilt kettles, wok drains, and any other fixture
which may introduce fat, oil or grease to the Wastewater Management
System as determined by the Commission.
D.
Where grease traps are required, they shall be installed, inspected
at least once each month, and maintained continuously in satisfactory
and effective operation and in accordance with the Commission's Guidelines
for the Installation, Operation and Maintenance of Grease Traps, the
requirements of the Uniform State Plumbing Code, and the State Environmental
Code, Title 5, all by and at the expense of the owner and user. Both
the owner of the premises where a grease trap is required and the
owner or operator of the establishment or business conducted on the
premises, shall be jointly and severally responsible for installing
a grease trap acceptable to the Commission and for properly servicing
and maintaining the grease trap. The Commission shall have the right
to inspect such facilities in accordance with these Regulations.
E.
The owner or operator of the establishment or business conducted
on the premises where the grease trap is located shall maintain a
log provided by the Commission which describes the date and type of
all inspections and cleaning of the grease trap, service and maintenance
performed in connection with the grease trap, the identity of the
person who performed the service or maintenance, the amount of residue
removed from the grease trap on each date, and the method of disposal
of the residue. The log shall be made available to the Commission
upon request for inspection and copying.
F.
Unless otherwise required by a schedule established by the Commission,
owners or operators shall clean grease traps once a month or whenever
one quarter of the liquid depth of the trap consists of grease or
oil, whichever occurs first. Grease traps shall be cleaned by physically
removing accumulated grease, scum, oil or other floating substances
and solids.
G.
Chemical, biological, or physical means (including flushing with
water) shall not be used to release fats, wax, oil or grease into
the sewer, bypass the trap, or otherwise make the trap operate less
effectively. Subject to the Commission's prior written approval, a
chemical or biological agent may be added to convert the fats, wax,
oil, and grease in a trap to a substance not prohibited by these Regulations,
if the resulting discharge from the trap will not cause or contribute
to an obstruction or blockage in the sewer or otherwise violate these
regulations. Unless so converted, the fats, wax, oil, and grease contents
of a grease trap shall not be discharged to the Wastewater Management
System.
H.
If the Commission determines there is insufficient space available
to install a grease trap, or the facility's plumbing cannot accommodate
a grease trap, or if the Commission determines that an existing or
proposed grease trap installation, despite being designed according
to the Commission's Guideline for the Installation, Operation and
Maintenance of Grease Traps, cannot meet the discharge concentration
limitation of 100 milligrams per liter, the Commission may require
the owner to implement other measures to ensure compliance with the
discharge limitation. Required measures may include but are not limited
to, modifying the type, capacity, location and construction of the
grease trap, adding a Commission approved chemical or biological agent
to convert the fats, wax, oil, and grease to a substance not prohibited
by these Regulations, more frequent cleaning of the grease trap, and
physical containment and removal of fats, wax, oil and grease for
disposal offsite.