Ohio Admin. Code 3745-90-05 - [Effective until 11/1/2022] Harmful algal blooms - treatment techniques
(A)
A public water
system shall develop and submit to the director written treatment optimization
protocols when microcystins are detected in a sample collected at a raw water
sampling point or a finished water sampling point. The protocols shall include
treatment adjustments that will be made under various raw and finished water
conditions. In developing the protocols, the public water system shall review
and optimize existing treatment for microcystins, considering effective
strategies for cyanotoxin treatment such as avoiding lysing cyanobacterial
cells, optimizing removal of intact cells, optimizing barriers for
extracellular cyanotoxin removal or destruction, optimizing sludge removal and
discontinuing or minimizing backwash recycling. The treatment optimization
protocols shall be submitted to the director in accordance with the following
timelines:
(1)
Within thirty days of the effective date of this rule, for public water systems
which have detected microcystins in a sample collected between July 16, 2015
and the effective date of this rule.
(2)
If a public
water system was not required to submit written treatment optimization
protocols under paragraph (A)(1) of this rule, then within thirty days of a
detection of microcystins in a sample collected after the effective date of
this rule.
(B)
A public water system shall comply with all of the
following when monitoring conducted in accordance with rule
3745-90-03
of the Administrative Code indicates microcystins concentrations exceed 1.6
micrograms per liter in a sample collected at the raw water sampling point more
than once within a consecutive twelve-month period, or when microcystins are
detected in a sample collected at a finished water sampling point or a
distribution sampling point:
(1)
Within one hundred and twenty days, the public water
system shall submit a cyanotoxin general plan to the director for approval in
accordance with paragraph (C) of rule
3745-91-02
of the Administrative Code. The cyanotoxin general plan shall include both
short-term and long-term actions to prevent exceedances of the microcystins
action levels established in paragraph (A)(1) or (A)(2) of rule
3745-90-02
of the Administrative Code in finished water. The cyanotoxin general plan may
include one or a combination of source water protection activities, avoidance
strategies, reservoir management and in-plant treatment technologies. The
cyanotoxin general plan shall include a schedule for implementation or a
demonstration that existing practices are sufficient to prevent exceedances of
the microcystins action levels established in paragraph (A)(1) or (A)(2) of
rule
3745-90-02
of the Administrative Code in finished water. The cyanotoxin general plan may
be approved by the director with or without conditions or disapproved in
accordance with the provisions of Chapter 3745-91 of the Administrative
Code.
(2)
Implement the approved cyanotoxin general plan in
accordance with the approved schedule.
(3)
Continue to
monitor for microcystins in accordance with rule
3745-90-03
of the Administrative Code to demonstrate treatment
effectiveness.
(C)
If the system does not comply with paragraph (A),
(B)(1) or (B)(2) of this rule, the public water system is in violation of the
treatment technique requirements of this rule and shall issue tier 2 public
notification in accordance with rule
3745-81-32 of
the Administrative Code using the standard health effects language in paragraph
(C) of rule
3745-90-06
of the Administrative Code.
(D)
Written
treatment protocols and cyanotoxin general plans submitted under paragraphs (A)
and (B) of this rule are not public records pursuant to section
149.433 of the Revised
Code.
Notes
Promulgated Under: 119.03
Statutory Authority: 3745.50, 6109.04
Rule Amplifies: 3745.50, 6109.04
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.