Current through Bulletin 2024-06, March 15, 2024
(1) The purpose of this section is to
diminish the possibility of onsite wastewater system failures by informing the
owners of required periodic maintenance, servicing, and monitoring. Any more
complex system shall require a higher level of operation and
maintenance.
(2) Each conventional
system should be assessed after the first year of operation, and thereafter at
the following minimum frequency.
(a) Any
system with daily flows between 1 and 3,000 gallons should be assessed every
three years.
(b) Any system with
daily flows between 3,001 and 5,000 gallons should be assessed every two
years.
(c) Any system with
non-domestic wastewater flows should be assessed yearly.
(3) Each system utilizing pressure
distribution shall be inspected as outlined in Sections
R317-4-13 Table 7.1 and
R317-4-13 Table 7.2.
(4) Each alternative system shall be
inspected as outlined in Sections
R317-4-13 Table 7.1 and
R317-4-13 Table 7.2.
(a) Each packed bed media system shall be
sampled a minimum of every six months as outlined in Section
R317-4-13 Table 7.3.
(i) The grab sample shall be taken before
discharge to an absorption system.
(ii) Effluent not meeting the standards of
Section R317-4-13 Table 7.3 shall be
followed with two successive weekly tests of the same type within a 30-day
period from the first exceedance.
(iii) If two successive samples exceed the
minimum standards, the system shall be considered as malfunctioning, and shall
require further evaluation and a corrective action plan, see Subsection
R317-4-3(11).
Effluent quality testing shall continue every two weeks until three successive
samples are found to be in compliance.
(b) Each membrane bioreactor system shall be
sampled a minimum of every three months as outlined in Section
R317-4-13 Table 7.3.
(i) Any grab sample shall be taken before
discharge to an absorption system.
(ii) Effluent not meeting the standards of
Section R317-4-13 Table 7.3 shall be
followed with two successive weekly tests of the same type within a 30-day
period from the first exceedance.
(iii) If two successive samples exceed the
minimum standards, the system shall be considered as malfunctioning, and shall
require further evaluation and a corrective action plan, see Subsection
R317-4-3(11)
Effluent quality testing shall continue every two weeks until three successive
samples are found to be in compliance.
(5) For recommended tank servicing see
Subsection R317-4-14(5)
Appendix E.
(6) Each distribution
or drop box, if provided, should be inspected and cleaned
periodically.
(7) If corrective
action is required for any malfunctioning system, see Subsection
R317-4-3(11).
