[1]
Editor's Note: The Board of Health approved the codification
of its regulations 6-16-2022.
A.
As allowed by MGL c. 111, § 31, the Board of Health of
the Town of Nantucket hereby requires that owners and operators of
all innovative/alternative sewage treatment technologies and all systems
where the soil absorption system is designed for pressure distribution
of effluent must report the results of all operation, maintenance,
and monitoring activities to the Barnstable County Department of Health
and the Environment. Such reporting must be performed in a manner
specified by the Barnstable County Department of Health and the Environment
and must occur within 30 days after each maintenance or monitoring
event.
B.
Further, when a system operator performs a system inspection and
finds that a sewage treatment technology has malfunctioning components
which have compromised the system's ability to treat sewage as designed,
the operator shall report on the system's status and any planned corrective
actions to the Board of Health and the Barnstable County Department
of Health and the Environment within 48 hours of the inspection.
A.
The Board
of Health of the Town of Nantucket, pursuant to its responsibilities
to enforce 310 CMR 15.00 (Title 5) and to facilitate comprehensive
wastewater planning within the Town of Nantucket, seeks to compile
information regarding on-site septic systems in a usable, retrievable
format. Accordingly, under the authority of MGL c. 111, § 31,
the Board of Health requires that all applicants for disposal works
construction permits for innovative/alternative subsurface sewage
disposal systems within the Town of Nantucket register selected details
regarding the application with an online database maintained by the
Barnstable County Department of Health and the Environment. A receipt
of said registration shall be required as part of the application
for a disposal works construction permit.
B.
Testing
and sampling requirements.
(1)
Both
year-round and seasonal residential systems with design flows less
than 2,000 gallons per day shall be required to have a field test
and effluent sample conducted twice per year as follows:
(a)
Year-round residential systems shall be tested and sampled every
six months, once between January and March and once between July and
October.
(b)
Seasonal systems shall be required to have a field test and effluent
sample conducted within 45 days of the system startup and again 30
days to 60 days thereafter unless otherwise indicated.
(2)
Inspections
and field tests shall include the following:
(a)
Document visual examination of the effluent for color, turbidity,
and effluent solids;
(b)
Measure effluent pH to determine if the wastewater is between six
standard units and nine standard units;
(c)
Measure dissolved oxygen, two mg/L or more, to ensure that the system
is operating; and
(d)
Record turbidity, less than or equal to 40 NTU.
(e)
BOD 5 and TSS, less than or equal to 30 mg/L, pH and total nitrogen
measured as the total of TKN, NO 2 -N and NO 2 -N < 19 mg/L.
(3)
It
is the designer's responsibility to indicate on the septic plan where
the sampling ports are located and ensure that the design includes
risers at finished grade.
(4)
After
three years of good performance and compliance with these requirements,
the O&M agreement may be modified at the recommendation of the
service contractor and Nantucket Board of Health, resulting in a reduction
in testing and sampling requirements. The I/A system must still comply
with 310 CMR 15.287, MassDEP's standard conditions, any special conditions
contained in the technology approval, designer- or company-specific
requirements, and any other local regulations.
(5)
At
a minimum, all I/A systems shall be inspected with a field test twice
per year. Any I/A system located in a designated nitrogen-sensitive
area (Zone I, II), or IWPA
of a public water supply, or water supply subject to nitrogen loading
restrictions due to the proximity to private drinking wells shall
be subject to more stringent testing and sampling requirements established
by MassDEP specific to the approved technology.
Enforcement of these local regulations shall be effective through Town of Nantucket Board of Health regulations in Chapter 223, Board of Health Administration, Article II, Enforcement; and through Town of Nantucket Board of Health regulations in Chapter 332, Sewage Disposal and Treatment, Article III, On-Site Sewage Disposal Systems.
