Current through Vol. 24-04, March 15, 2024
Rule 7.
(1) The
department may issue permits for the use of a liquid formulation of fluridone
as a spring treatment to control Eurasian watermilfoil, as follows:
(a) A permit may be issued if the department
determines that both of the following provisions apply:
(i) There is widespread distribution of
Eurasian watermilfoil in the lake.
(ii) The abundance of Eurasian watermilfoil
causes it to be an aquatic nuisance.
(b) An application shall include information
necessary for the department to make the determination under subdivision (a) of
this subrule, including an aquatic vegetation survey performed in August or
September of the year before the proposed fluridone application and
corresponding survey data analysis. The aquatic vegetation survey and data
analysis shall be performed according to methods that have been approved by the
department before submittal of a permit application.
(c) A permit or permit amendment shall not
authorize a lake water fluridone concentration to be more than 6 parts per
billion.
(d) The department may
amend a permit to authorize an additional treatment 14 to 21 days following
initial treatment, if the average fluridone concentration of all surface
samples taken 13 to 15 days after treatment is less than 5 parts per
billion.
(2) The
department may issue permits for the evaluation of uses of fluridone other than
as a spring treatment to control Eurasian watermilfoil.
(3) An applicant proposing chemical treatment
of a waterbody using fluridone shall provide a lake management plan as
described in R 323.3104(2).
(4) As
a condition of all permits authorizing the use of fluridone, the department
shall require the permittee to perform the activities listed in R 323.3106(j),
(k), and (l).
(5) The department
shall not issue a permit for the use of fluridone in the same waterbody more
than once in any 3-year period, unless either of the following provisions
applies:
(a) The department determines, in
the year of treatment, that a fluridone treatment failed to control Eurasian
watermilfoil.
(b) A use of
fluridone approved by the department pursuant to subrule (2) of this rule
explicitly includes the use of fluridone in more than 1 year during a 3-year
period.
