NR 151.095(6)(a)3.f.f. A compliance period for meeting the livestock performance standard or prohibition. NR 151.095(6)(a)3.g.g. An explanation of the possible consequences if the owner or operator fails to comply with provisions of the notice, including enforcement or loss of cost sharing, or both. NR 151.095(6)(b)1.1. An owner or operator that receives the notice under par. (a) shall install or implement best management practices and corrective measures to meet a performance standard or prohibition in the time period specified in the notice, if cost sharing is available in accordance with sub. (5) (d) 2. NR 151.095(6)(b)2.2. The compliance period identified in the notice in par. (a) shall be determined by the department as follows: NR 151.095(6)(b)2.a.a. The compliance period shall begin on the post-mark date of the notice or the date of personal delivery. NR 151.095(6)(b)2.b.b. The length of the compliance period shall be not less than 60 days nor more than 3 years unless otherwise provided for in this subdivision. NR 151.095(6)(b)2.c.c. The length of the compliance period may be less than 60 days if the site is an imminent threat to public health or fish and aquatic life. NR 151.095(6)(b)2.d.d. The department may authorize an extension up to 4 years on a case-by-case basis provided that the reasons for the extension are beyond the control of the owner or operator of the livestock facility. A compliance period may not be extended to exceed 4 years in total. NR 151.095(6)(b)3.3. Once an owner or operator achieves compliance with a livestock performance standard or prohibition, compliance with the standard or prohibition shall be maintained by the existing owner or operator and heirs or subsequent owners or operators, regardless of cost sharing. NR 151.095(7)(7) Notification requirements and compliance periods for existing livestock facilities in situations when no eligible costs are involved. NR 151.095(7)(a)1.1. The department shall notify a non-complying owner or operator of an existing livestock facility of the determinations made under sub. (5). NR 151.095(7)(a)2.2. The notice shall be sent certified mail, return receipt requested or personal delivery. NR 151.095(7)(a)3.a.a. A description of the livestock performance standard or prohibition that is being violated and the determination that corrective measures do not involve eligible costs under sub. (5) (c). NR 151.095(7)(a)3.c.c. A compliance period for meeting the livestock performance standard or prohibition. The compliance period may not exceed the time limits in par. (b). NR 151.095(7)(a)3.d.d. An explanation of the consequences if the owner or operator fails to comply with provisions of the notice. NR 151.095(7)(b)1.1. The compliance period for existing livestock facilities where best management practices and other corrective measures do not involve eligible costs shall be in accordance with the following; NR 151.095(7)(b)1.a.a. The compliance period shall begin on the postmark date of the notice or the date of personal delivery. NR 151.095(7)(b)1.b.b. The length of the compliance period shall be not less than 60 days nor more than 3 years unless otherwise provided for in this subsection. NR 151.095(7)(b)1.c.c. The length of the compliance period may be less than 60 days if the site is an imminent threat to public health, or fish and aquatic life. NR 151.095(7)(b)2.2. Once compliance with a livestock performance standard or prohibition is attained, compliance with the performance standard or prohibition shall be maintained by the existing owner or operator and heirs or subsequent owners or operators. NR 151.095(7)(c)(c) Combined notices. The department may meet multiple notification requirements under par. (a), sub. (6) and s. NR 151.09 within any single notice issued to the owner or operator. NR 151.095(8)(a)(a) Authority to initiate enforcement. The department may take action pursuant s. 281.98, Stats., or other appropriate actions, against the owner or operator of a livestock operation for failing to comply with the livestock performance standards and prohibitions in this subchapter or approved variances to the livestock performance standards provided by the department under s. NR 151.097. NR 151.095(8)(b)(b) Enforcement following notice and direct enforcement. The department shall provide notice to the owner or operator of an existing livestock facility in accordance with sub. (6) or (7) prior to the department initiating enforcement action under s. 281.98, Stats., except in cases of repeated mismanagement, such as allowing repeated manure storage overflows, where the department may pursue direct enforcement under s. 281.98, Stats., for the second and subsequent offenses.