NR 213.04(15) (15) “Storage tank” means a containment vessel fabricated of concrete, glass-reinforced plastic or steel for the purpose of storage or treatment of wastewater or biological fermentation leachates.

NR 213.04(16) (16) “Subbase” means the layer or layers of specified or selected material of designed thickness placed on a subgrade to support a base course.

NR 213.04(17) (17) “Subgrade” means the ground surface upon which the pavement structure is constructed.

NR 213.04(18) (18) “Surface course” means the layer or layers of specified material of designed thickness placed on a base course and forming the upper portion of a pavement structure. If more than one layer is specified, the bottom layer is referred to as the binder course.

NR 213.04(19) (19) “Treatment structure” means either an earthen treatment structure or a treatment tank used for the chemical, physical or biological treatment of wastewater or biological fermentation of leachates or a structure constructed for chemical, physical or biological treatment of by-product solids or other material.

NR 213.04(20) (20) “Wetlands” has the meaning specified under s. 23.32, Stats.

NR 213.04(21) (21) “WDOT standards for roads and bridge construction” means the Wisconsin department of transportation standard specifications for road and bridge construction, edition of 1989.

NR 213.04 Note Note: Copies of the WDOT standards may be inspected at the offices of the department, the secretary of state and the legislative reference bureau.

NR 213.04 History History: Cr. Register, July, 1984, No. 343, eff. 8-1-84; r. and recr. Register, June, 1990, No. 414, eff. 7-1-90; correction in (1) made under s. 13.92 (4) (b) 6., Stats.

NR 213.05 NR 213.05 Additional requirements. The design standards, material requirements or performance criteria of this chapter may be supplemented or superseded by more stringent requirements, including pretreatment requirements, more stringent design limitations, and more frequent or stringent effluent or groundwater monitoring requirements, if:

NR 213.05(1) (1) There is an increased possibility of groundwater contamination due to structure location, soil types, geologic condition or other conditions, or

NR 213.05(2) (2) The stored or treated material may contain any substance or concentration of substances not normally associated with the type of discharges identified in s. NR 213.02 (1), such as toxic substances or hazardous wastes, or

NR 213.05(3) (3) The storage structure or treatment unit may cause a public nuisance.

NR 213.05 History History: Cr. Register, June, 1990, No. 414, eff. 7-1-90.

NR 213.06 NR 213.06 Exemptions from ch. NR 213.

NR 213.06(1) (1) The department may allow exemptions from the design standards and material requirements described in this chapter if the owner or operator can demonstrate that such design standards and material requirements are more stringent than necessary to comply with the provisions of ch. NR 140 and chs. 160 and 283, Stats. The owner or operator shall justify such an exemption from the design standards and material requirements of this chapter by demonstrating that the alternative design will comply with the following performance criteria:

NR 213.06(1)(a) (a) That pollutant dilution, dispersion or degradation will occur within the design management zone as defined in ch. NR 140;

NR 213.06(1)(b) (b) That increases of substances in the groundwater from lagoons, storage structures and treatment structures at the site will be minimized to the extent technically and economically feasible; and

NR 213.06(1)(c) (c) That applicable groundwater and surface water standards will not be exceeded.

NR 213.06(2) (2) The department shall consider the following factors when reviewing an alternative design in consideration of granting an exemption:

NR 213.06(2)(a) (a) Physical characteristics of the site, such as soil texture, soil permeability, depth to groundwater and depth to and type of bedrock.

NR 213.06(2)(b) (b) Age and condition of an existing structure.

NR 213.06(2)(c) (c) Analytical data from existing groundwater monitoring wells or any that may be installed as part of the demonstration.

NR 213.06(2)(d) (d) The quantity and composition of the materials stored or treated at the facility.

NR 213.06(2)(e) (e) The compatibility between the materials stored or treated and the lining of the storage or treatment unit.

NR 213.06(2)(f) (f) Any other information relevant to the environmental impacts of the facility’s operations.

NR 213.06(3) (3) Submitting an exemption request-new or modified structures. The owner or operator of a new or modified lagoon, storage structure or treatment structure may request an exemption from the design standards and material requirements of this chapter by submitting facts to the department:

NR 213.06(3)(a) (a) In the application for issuance, reissuance or modification of WPDES permit, or

NR 213.06(3)(b) (b) In plans and specifications for a new or expanded lagoon, storage structure or during the 90-day plan approval period as specified in s. 281.41, Stats., or