NR 210.07(5)(b)
(b) Except as limited by
par. (d) and subject to EPA approval, the department may after notice and opportunity for public comment, adjust the minimum levels of effluent quality set forth in
par. (a) 1. a.,
b.,
2. a. and
b. for trickling filter facilities and in
par. (a) 1. a. and
b. for waste stabilization pond facilities to conform to the BOD5 and SS effluent concentrations consistently achievable through proper operation and maintenance by the median (50th percentile) facility in a representative sample of facilities within a state or appropriate contiguous geographical area that meet the definition of facilities eligible for treatment equivalent to secondary treatment.
NR 210.07(5)(c)
(c) Where data are available to establish CBOD5 limitations for a treatment works subject to this subsection, the department may substitute the parameter CBOD5 for the parameter BOD5 in
pars. (a) and
(b), on a case-by-case basis.
NR 210.07(5)(c)1.
1. The levels of CBOD5 effluent may not be less stringent than the following:
NR 210.07(5)(c)2.
2. To apply for the CBOD5 variance, the permittee shall provide the data outlined in
sub. (4).
NR 210.07(5)(d)
(d) Any permit adjustment made pursuant to this section may not be any less stringent than the limitation required pursuant to
sub. (5) (a). The department shall require more stringent limitations when adjusting permits if:
NR 210.07(5)(d)1.
1. For existing facilities the permitting authority determines that the 30-day average and 7-day average BOD5 and SS effluent values that could be achievable through proper operation and maintenance of the treatment works, based on an analysis of the past performance of the treatment works, would enable the treatment works to achieve more stringent limitations, or
NR 210.07(5)(d)2.
2. For new facilities, the department determines that the 30-day average and 7-day average BOD5 and SS effluent values that could be achievable through proper operation and maintenance of the treatment works, considering the design capability of the treatment process and geographical and climatic conditions, would enable the treatment works to achieve more stringent limitations.
NR 210.07(6)
(6) Combined sewers. Treatment works which have a combined sewer system may not be capable of meeting the percentage removal requirements established in
sub. (5) (a) 1. c. and
2. c. or in
s. NR 210.05 (1) (a) 3. and
(b) 3. during wet weather where the treatment works receive flows from combined sewers. For each treatment works, the decision shall be made on a case-by-case basis as to whether any attainable percentage removal level can be defined, and if so, what the level should be.
NR 210.07 History
History: Cr.
Register, October, 1986, No. 370, eff. 11-1-86.
NR 210.08(1)(1) All treatment works which are subject to the provisions of this chapter shall be equipped for emergency operation. Emergency power shall be provided in accordance with
s. NR 110.15 (5) (d). Sufficient emergency power shall be provided so that:
NR 210.08(1)(a)
(a) All sewage treatment facilities shall, at a minimum, be able to maintain primary settling and effluent disinfection under all design conditions.
NR 210.08(1)(b)
(b) All sewage treatment facilities discharging to class I, II, or III trout streams, or other critical stream segments as determined by the department, shall be able to operate all units critical to meeting the effluent limits as set forth in the WPDES permit for a minimum emergency period of 24 hours under all design flow conditions.
NR 210.08 History
History: Cr.
Register, October, 1986, No. 370, eff. 11-1-86;
CR 09-123: am. (1) (a) and (b), r. and recr. (2)
Register July 2010 No. 655, eff. 8-1-10.
NR 210.09
NR 210.09
Analytical methods and laboratory requirements. Methods used for analysis of influent and effluent samples shall be as set forth in
ch. NR 219 unless alternative methods are specified in the WPDES discharge permit.
NR 210.09 History
History: Cr.
Register, October, 1986, No. 370, eff. 11-1-86.
NR 210.10
NR 210.10
Requirements for certified or registered laboratory. Bacteriological analyses of groundwater samples, and all radiological analyses, shall be performed by the state laboratory of hygiene or at a laboratory certified or approved by the department of agriculture, trade and consumer protection. Other laboratory test results submitted to the department under this chapter shall be performed by a laboratory certified or registered under
ch. NR 149. The following tests are excluded from the requirements of this section:
NR 210.10 History
History: Cr.
Register, October, 1986, No. 370, eff. 11-1-86.
NR 210.11
NR 210.11
Compliance maintenance annual report (CMAR). The CMAR shall be submitted to the department on or before June 30 of each year and shall meet all applicable requirements.
