(1) APPLICABILITY. This section applies to transportation
facilities under the jurisdiction of the department of transportation for
maintenance purposes that are located within a municipality regulated under
subch. I of ch. NR 216.
Note: Transportation facilities that are not
under the jurisdiction of the department of transportation for maintenance
purposes are subject to the performance standards in s.
NR 151.13.
(2) Requirements.
(a) Except as provided in par. (c), the department of
transportation shall develop and implement a storm water management plan in
consultation with the department to control pollutants from transportation
facilities described in sub. (1), for runoff from existing transportation
facilities that enters waters of the state as compared to no storm water
management controls. By design, the plan shall do the following:
Note: Section NR 151.25(2) (c) was repealed by
CR 19-050 Register January 2020 No 769, eff. 2-1-20.
1. A 20 percent reduction in total suspended
solids or to the maximum extent practicable, beginning not later than a date
consistent with the municipality regulated under subch. I of ch. NR
216.
4. Evidence of meeting the
performance standard of this paragraph shall require the use of a model or an
equivalent methodology approved by the department. Acceptable models and model
versions include SLAMM version 9.2 and P8 version 3.4 or subsequent versions of
those models. An earlier version of SLAMM is acceptable if no credit is being
taken for street cleaning.
Note: Information on how to access SLAMM and
P8 and the relevant parameter files is available from the department's storm
water management program at dnr.wi.gov.
(b) The department of transportation shall
inform and educate appropriate department of transportation staff and any
transportation facility maintenance authority contracted by the department of
transportation to maintain transportation facilities owned by the department of
transportation regarding nutrient, pesticide, salt and other deicing material
and vehicle maintenance management activities in order to prevent runoff
pollution of waters of the state. NR 151.25(2)(d)
(d) To comply with the standards required
under this subsection, BMPs may be located on-site or off-site as part of a
regional storm water device, practice or system, but shall be installed in
accordance with s.
NR 151.003.
