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Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.01 - Purpose

Current through June 24, 2024
The purpose of this chapter is to establish procedures and
				  requirements for the protection and regulation of aquatic plants pursuant to
				  ss.
				  23.24 and
				  30.07,
				  Stats. Diverse and stable communities of native aquatic plants are recognized
				  to be a vital and necessary component of a healthy aquatic ecosystem. This
				  chapter establishes procedures and requirements for issuing aquatic plant
				  management permits for introduction of aquatic plants or control of aquatic
				  plants by manual removal, burning, use of mechanical means or plant inhibitors.
				  This chapter identifies other permits issued by the department for aquatic
				  plant management that contain the appropriate conditions as required under this
				  chapter for aquatic plant management, and for which no separate permit is
				  required under this chapter. Introduction and control of aquatic plants shall
				  be allowed in a manner consistent with sound ecosystem management, shall
				  consider cumulative impacts, and shall minimize the loss of ecological values
				  in the body of water. The purpose of this chapter is also to prevent the spread
				  of invasive and non-native aquatic organisms by prohibiting the launching of
				  watercraft or equipment that has any aquatic plants or zebra mussels
				  attached.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.02 - Applicability

Current through June 24, 2024
A person sponsoring or conducting manual removal, burning or
				  using mechanical means or aquatic plant inhibitors to control aquatic plants in
				  navigable waters, or introducing non-native aquatic plants to waters of this
				  state shall obtain an aquatic plant management permit from the department under
				  this chapter.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.03 - Definitions

Current through June 24, 2024
In this chapter:
(1)
				"Aquatic community" means lake or river biological resources.
(2) "Beneficial water use activities" mean
				angling, boating, swimming or other navigational or recreational water use
				activity.
(3) "Body of water" means
				any lake, river or wetland that is a water of this state.
(4) "Complete application" means a completed
				and signed application form, the information specified in s.
				NR
				109.04 and any other information which may reasonably
				be required from an applicant and which the department needs to make a decision
				under applicable provisions of law.
(5) "Department" means the Wisconsin
				department of natural resources.
(6) "Manual removal" means the control of
				aquatic plants by hand or hand-held devices without the use or aid of external
				or auxiliary power.
(7) "Navigable
				waters" means those waters defined as navigable under s.
				30.10,
				Stats.
(8) "Permit" means aquatic
				plant management permit.
(9) "Plan"
				means aquatic plant management plan.
(10) "Wetlands" means an area where water is
				at, near or above the land surface long enough to be capable of supporting
				aquatic or hydrophytic vegetation and which has soils indicative of wet
				conditions.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.04 - Application requirements and fees

Current through June 24, 2024
(1) Permit
				applications shall be made on forms provided by the department and shall be
				submitted to the regional director or designee for the region in which the
				project is located. Permit applications for licensed aquatic nursery growers
				may be submitted to the department of agriculture, trade and consumer
				protection.
Note: Applications may be obtained from the department's
				  regional headquarters or service centers. DATCP has agreed to send application
				  forms and instructions provided by the department to aquatic nursery growers
				  along with license renewal forms. DATCP will forward all applications to the
				  department for processing.
(2) The application shall be accompanied by
				all of the following unless the application is made by licensed aquatic nursery
				growers for selective harvesting of aquatic plants for nursery stock.
				Applications made by licensed aquatic nursery growers for harvest of nursery
				stock do not have to include the information required by par. (d), (e), (h),
				(i) or (j).
(a) A nonrefundable application
				fee. The application fee for an aquatic plant management permit is:
1. $30 for a proposed project to manage
				aquatic plants on less than one acre.
2. $30 per acre to a maximum of $300 for a
				proposed project to manage aquatic plants on one acre or larger. Partial acres
				shall be rounded up to the next full acre for fee determination. An annual
				renewal of this permit may be requested with an additional application fee of
				one-half the original application fee, but not less than $30.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.05 - Permit issuance

Current through June 24, 2024
(1) The department shall issue or deny
				issuance of the requested permit within 15 working days after receipt of a
				completed application and approved plan as required under s.
				NR
				109.04(3).
(2) The department may specify any of the
				following as conditions of the permit:
(a) The
				quantity of aquatic plants that may be introduced or controlled.
(b) The species of aquatic plants that may be
				introduced or controlled.
(c) The
				areas in which aquatic plants may be introduced or controlled.
(d) The methods that may be used to introduce
				or control aquatic plants.
(e) The
				times during which aquatic plants may be introduced or controlled.
(f) The allowable methods used for disposing
				of or using aquatic plants that are removed or controlled.
(g) Annual or other reporting requirements to
				the department that may include information related to pars. (a) to (f).
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.06 - Waivers

Current through June 24, 2024
The department waives the permit requirements under this
				  chapter for any of the following:
(1)
				Manual removal or use of mechanical devices to control or remove aquatic plants
				from a body of water 10 acres or less that is entirely confined on the property
				of one person with the permission of that property owner.
Note: A person who introduces native aquatic plants or
				  removes aquatic plants by manual or mechanical means in the course of operating
				  an aquatic nursery as authorized under s.
				  94.10,
				  Stats., on privately owned non-navigable waters of the state is not required to
				  obtain a permit for the activities.
(2) A riparian owner who manually removes
				aquatic plants from a body of water or uses mechanical devices designed for
				cutting or mowing vegetation to control plants on an exposed lake bed that
				abuts the owner's property provided that the removal meets all of the
				following:
(a)
1. Removal of native plants is limited to a
				single area with a maximum width of no more than 30 feet measured along the
				shoreline provided that any piers, boatlifts, swimrafts and other recreational
				and water use devices are located within that 30-foot wide zone and may not be
				in a new area or additional to an area where plants are controlled by another
				method; or
2. Removal of nonnative
				or invasive aquatic plants as designated under s.
				NR
				109.07 when performed in a manner that does not harm
				the native aquatic plant community; or
3. Removal of dislodged aquatic plants that
				drift on-shore and accumulate along the waterfront.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.07 - Invasive and nonnative aquatic plants

Current through June 24, 2024
(1) The department
				may designate any aquatic plant as an invasive aquatic plant for a water body
				or a group of water bodies if it has the ability to cause significant adverse
				change to desirable aquatic habitat, to significantly displace desirable
				aquatic vegetation, or to reduce the yield of products produced by
				aquaculture.
(2) The following
				aquatic plants are designated as invasive aquatic plants statewide: Eurasian
				water milfoil, curly leaf pondweed and purple loosestrife.
(3) Native and nonnative aquatic plants of
				Wisconsin shall be determined by using scientifically valid publications and
				findings by the department.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.08 - Prohibitions

Current through June 24, 2024
(1) No person may distribute an invasive
				aquatic plant, under s.
				NR
				109.07.
(2) No person may intentionally introduce
				Eurasian water milfoil, curly leaf pondweed or purple loosestrife into waters
				of this state without the permission of the department.
(3) No person may intentionally cut aquatic
				plants in public/navigable waters without removing cut vegetation from the body
				of water.
(4)
(a) No person may place equipment used in
				aquatic plant management in a navigable water if the person has reason to
				believe that the equipment has any aquatic plants or zebra mussels
				attached.
(b) This subsection does
				not apply to equipment used in aquatic plant management when re-launched on the
				same body of water without having visited different waters, provided the
				re-launching will not introduce or encourage the spread of existing aquatic
				species within that body of water.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.09 - Plan specifications and approval

Current through June 24, 2024
(1) Applicants
				required to submit an aquatic plant management plan, under s.
				NR
				109.04(3), shall develop and submit
				the plan in a format specified by the department.
(2) The plan shall present and discuss each
				of the following items:
(a) The goals and
				objectives of the aquatic plant management and protection activities.
(b) A physical, chemical and biological
				description of the waterbody.
(c)
				The intensity of water use.
(d) The
				location of aquatic plant management activities.
(e) An evaluation of chemical, mechanical,
				biological and physical aquatic plant control methods.
(f) Recommendations for an integrated aquatic
				plant management strategy utilizing some or all of the methods evaluated in
				par. (e).
(g) An education and
				information strategy.
(h) A
				strategy for evaluating the efficacy and environmental impacts of the aquatic
				plant management activities.
(i)
				The involvement of local units of government and any lake organizations in the
				development of the plan.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.10 - Other permits

Current through June 24, 2024
Permits issued under s.
				  30.12,
				  30.20,
				  31.02
				  or
				  281.36,
				  Stats., or under ch. NR 107 may contain provisions which provide for aquatic
				  plant management. If a permit issued under one of these authorities contains
				  the appropriate conditions as required under this chapter for aquatic plant
				  management, a separate permit is not required under this chapter. The permit
				  shall explicitly state that it is intended to comply with the substantive
				  requirements of this chapter.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 109 - Aquatic plants: introduction, manual removal and mechanical control regulations › Section NR 109.11 - Enforcement

Current through June 24, 2024
(1) Violations of this chapter may be
				prosecuted by the department under chs. 23, 30 and 31, Stats.
(2) Failure to comply with the conditions of
				a permit issued under or in accordance with this chapter may result in
				cancellation of the permit and loss of permit privileges for the subsequent
				year. Notice of cancellation or loss of permit privileges shall be provided by
				the department to the permit holder.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.01 - Applicability

Current through June 24, 2024
This chapter is applicable to all new or modified sewerage
				  systems, excluding only industrial waste treatment facilities. This chapter
				  also applies to sewerage systems employing land disposal of sewage effluent,
				  except those systems defined as plumbing within the purview of s.
				  145.01(10)
				  (a) 2, Stats.
The authority to enact these rules is contained in ch.
					 281, Stats. Pursuant to s.
					 299.97,
					 Stats., any person who violates this chapter shall forfeit not less than $10
					 nor more than $5,000 for each violation. Each day of continued violation is a
					 separate offense.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.04 - Alternative requirements

Current through June 24, 2024
(1) If the owner of
				a proposed reviewable project feels that compliance with the design
				requirements of this chapter is impracticable, the reasons therefor shall be
				fully communicated in writing to the department prior to the submission of
				final plans. This communication must set forth alternative requirements for
				which department approval is sought and all pertinent facts, data, reports and
				studies supporting the imposition of such alternative requirements.
(2) If the department determines that
				compliance with the design requirements of this chapter would be impracticable
				in specific cases, it may approve alternative requirements which, in its
				opinion, are in substantial compliance with the requirements of this
				chapter.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.06 - Construction plans for reviewable projects

Current through June 24, 2024
(1) All
				construction plans for reviewable projects submitted to the department shall be
				in conformance with ch. NR 108, and shall bear a suitable title block which
				includes the name of the owner, the scale and the date. The north point shall
				be shown on each plan. All plans shall be clear and legible. Blueprints will
				not be accepted. The datum used shall be indicated and shall be related to
				U.S.G.S. datum.
(2) Detailed
				construction plans shall contain appropriate plan views, elevations, necessary
				sections and supplemental views which together with the specifications provide
				all necessary information for construction of the project. Manufacturers'
				drawings shall not be accepted.
(3)
				All construction plans shall be in conformance with an approved facilities plan
				as required in s.
				NR
				110.08(1).
(4) If the construction of a proposed project
				requires, or may require, any permit under s.
				30.12,
				30.19,
				30.195,
				or
				30.20,
				Stats., application for the necessary permits shall be made to the department
				at the same time the project plans and specifications are submitted for review.
				Failure to apply for the necessary permits shall be cause for denial or
				rejection of the plans and specifications.
Applicable state and local codes, including those of the
					 department of industry, labor and human relations, the public service
					 commission and the department of health and social services, should be
					 consulted for other requirements.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.07 - Specifications for reviewable projects

Current through June 24, 2024
(1) Complete
				technical specifications for all reviewable projects shall accompany the
				construction plans. Where feasible the specifications shall contain provisions
				for maintaining the same degree of wastewater treatment during construction as
				that which existed prior to the start of construction.
(2) The specifications accompanying the
				detailed construction drawing shall include, wherever applicable:
(a) All construction information not shown on
				the plans;
(b) The complete
				requirements for all mechanical and electrical equipment;
(c) The type and operating characteristics of
				all equipment;
(d) The laboratory
				fixtures and equipment;
(e) The
				construction materials to be used;
(f) The identification of the chemicals to be
				used; and
(g) The instructions for
				testing materials and equipment to meet design standards.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.08 - Facilities plans for reviewable projects

Current through June 24, 2024
(1) APPLICABILITY.
				A facilities plan shall be prepared for each reviewable project submitted to
				the department for approval. Facilities plans for sewage treatment facilities
				or new sewage collection systems shall be submitted to and approved by the
				department prior to submittal of the construction plans and specifications. The
				department may accept construction plans and specifications for review prior to
				facilities plan approval provided that all substantive issues of the facilities
				plan review have been resolved.
(2)
				CONTENT. The facilities plan for municipally owned sewage treatment facilities,
				sewage collection systems, and interceptors shall contain all of the
				information required by s.
				NR 110.09(1)
				through (6), 110.10(1) and (2), or
				110.11(1), whichever
				are applicable. The following facilities planning requirements do not apply to
				nonmunicipally owned facilities: s.
				NR 110.09(1)
				(b) 3., 5. and 8., and (2) (b) to (e) and (j)
				to (m). The level of detail necessary to fulfill the requirements of this
				subsection may vary depending on the size and complexity of the
				project.
(3) WISCONSIN
				ENVIRONMENTAL POLICY ACT REVIEW. Facilities plans shall be reviewed by the
				department in accordance with ch. NR 150.
(4) CONFORMANCE WITH APPROVED AREAWIDE WASTE
				TREATMENT MANAGEMENT PLANS. All approvable sewerage system facility plans must
				be in conformance with approved areawide waste treatment management plans
				unless the department determines that such plans conflict with the department's
				responsibilities to protect, maintain, and improve the quality and management
				of the waters of the state, ground and surface, public and private. In the
				absence of an approved areawide waste treatment management plan, no
				determination of such conformance is required.
(5) APPROVAL OF NEW SEWAGE TREATMENT
				FACILITIES. It is the policy of the department to restrict the construction of
				new sewage treatment facilities in order to preserve and protect the quality of
				the waters of the state. The department may deny requests for approval of new
				sewage treatment facilities unless they meet the following criteria:
(a)
Treatment facilities to serve
				existing residential development.
Proposals for new treatment
				facilities to serve existing residential development may not be approved
				unless:
1. They are necessary to solve a
				documented and severe existing water quality (groundwater or surface water) or
				public health problem related to inadequate existing residential sewage
				disposal; or, are needed to replace an existing treatment facility which is not
				in compliance with its WPDES permit;
2. They are the cost-effective alternative
				solution in accordance with s.
				NR 110.09(1)
				(a); and
3. They are municipally owned, operated and
				maintained.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.10 - Sewage collection system projects

Current through June 24, 2024
(1) FACILITIES
				PLANS FOR SEWER PROJECTS. For sewer projects the facilities plan shall include
				the following information:
(a)
Description.
A brief description of the project; including its
				geographic location and any necessary reference maps or exhibits.
(b)
Topography.
A brief
				description of the topography of the general area with specific reference to
				the area serviced by the proposed sewer.
(c)
Soil investigations.
A
				description of the extent of soil investigations, including information on rock
				likely to be encountered. In addition, that portion of the proposed sewer which
				is below high ground water level shall be indicated.
(d)
Flooding.
A designation
				of any portion of the proposed sewer which is located within the floodway or
				floodplain as defined in ch. NR 116. All projects shall conform to the
				requirements of ch. NR 116.
(e)
Wetlands.
A statement indicating whether the proposed sewer
				will pass through a wetlands area, and the approximate acreage of the
				wetland.
(f)
Population.
Population growth rate (annual) based on the most
				recent data for the municipality.
(g)
Sewer service area.
If
				the sewer project is tributary to a treatment plant for which a service area
				that has been delineated as a part of an approved areawide waste treatment
				management plan, indicate the location of the sewer on a map of the service
				area.
(h)
Downstream
				overflows.
A description of the number and location of sanitary sewer
				overflow structures and a description of the occurrence of sanitary sewer
				overflow events at any location within the sewerage system.
(i)
Description of treatment
				facilities.
A brief description of the type of treatment facility
				indicating the ability of the facility to handle the sewage of the proposed
				project during both wet and dry weather conditions.
(j)
Costs.
A discussion of
				the estimated capital costs and where an entire sewerage system is being
				installed, the estimated annual cost to the user of the system.
(k)
Basis of design.
The
				following data shall be provided for the proposed project:
1. Design period.
2. Population densities per acre and total
				population served.
3. Area served
				by proposed sewers in acres.
4. Per
				capita sewage contribution expressed as an average and maximum value, include
				basis for this determination.
5.
				Infiltration.
6. Industrial waste
				contribution.
7. Design flow rates
				as expressed as average and maximum values.
8. Size of pipe, grade, velocity and maximum
				capacity.
(L)
Environmental analysis.
The department may require the
				submittal of an environmental analysis meeting the requirements of s.
				NR
				110.09(3) for large or complex sewer
				projects, for those projects which are proposed to be constructed in
				environmentally sensitive areas, or for projects which involve significant
				public controversy.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.11 - Sewage lift stations

Current through June 24, 2024
(1) FACILITIES PLANS FOR SEWAGE LIFT
				STATIONS. The facilities plan shall include the following:
(a)
Contributory area.
A
				description of the extent of the existing and proposed contributory area with
				reference to a general system map as well as description of the areas of
				probable future expansion of the contributory area.
(b)
Location.
The location
				of the proposed lift station, force main and point of discharge to the existing
				sewer system. In addition the report shall discuss the capacity available in
				the existing downstream sewer to handle the additional flow.
(c)
Flooding.
A statement
				indicating whether the proposed lift station is in a floodway or floodplain as
				defined in ch. NR 116. All projects shall conform to the requirements of ch. NR
				116.
(d)
Basis for
				design.
The design data for the proposed project including the
				following:
1. Design period;
2. Population densities per acre and total
				population served;
3. Area served
				in acres;
4. Per capita sewage
				contribution expressed as an average and as a maximum value;
5. Infiltration and inflow;
6. Industrial waste contributions;
7. Design flow rates expressed as average and
				maximum values; and
8. Design head
				conditions.
(e)
Essential features.
A description of the essential features of
				construction and operation of the proposed stations.
(f)
Costs.
Discussion of the
				estimated capital costs, estimated annual maintenance cost, and estimated
				annual cost to the average user of the system;
(g)
Environmental analysis.
The department may require the submittal of an environmental analysis meeting
				the requirements of s.
				NR
				110.09(3) for large or complex lift
				station projects, for those projects constructed in environmentally sensitive
				areas or for projects which could involve significant public controversy.
Note:
Facilities plans for sewage lift stations
				  may include results from a system evaluation and capacity assurance plan under
				  s.
				  NR
				  110.10(4).
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.12 - Owner approval requirement

Current through June 24, 2024
If the engineer submitting plans to the department for
				  approval is not an employee of or has not been retained by the owner of the
				  sewerage system for which the plans are submitted, written acceptance of the
				  final plans by the owner shall be required prior to submission of the plans to
				  the department.
For example, if an engineer is retained by a developer to
					 design sewer extensions which will be connected to a municipal system and which
					 will eventually be owned by the municipality, the plans must be accepted by the
					 municipality before the department issues an approval.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.13 - Sewer design criteria

Current through June 24, 2024
(1) GENERAL DESIGN CONSIDERATIONS.
(a)
Separation of sewers.
New systems, or extensions to existing systems, which will serve presently
				unsewered areas shall be designed to exclude storm and other clear water
				sources from the sanitary sewer system.
(b)
Design basis.
1. Sewage collection systems, exclusive of
				interceptors, shall be designed in accordance with s.
				NR
				110.10(1).
2. Interceptors shall be designed in
				accordance with s.
				NR 110.10(2)
				(a).
3. Extensions to existing sewage collection
				systems may be designed assuming an average design flow rate of 378 liters (100
				gallons) per capita per day.
(c)
Design capacity.
Sewers
				shall be designed to carry, when running full, the peak design flows expected
				from domestic, commercial, industrial and other sources, and infiltration and
				inflow. Peak design flow shall be established using existing sewage flow or
				water use records, and records of infiltration and inflow. Where peak flow
				records are not available, the peak design flow shall be determined by applying
				one of the following peak flow factors to the average design flow:
1. 250% of the average design flow for
				interceptors, main (trunk) sewers, and sewage outfall pipes; or,
2. 400% of average design flow for submain
				and branch sewers.
(d)
Protection of water supplies.
1. Sanitary sewers shall be located with a
				minimum separation distance of 60 meters (200 feet) from any community water
				system well in accordance with ch. NR 811. A lesser separation distance may be
				allowed where the sanitary sewer main is constructed of water main materials
				and joints and pressure tested in accordance with ch. NR 811 requirements. When
				sanitary sewers are proposed to be laid within 60 meters (200 feet) of a
				community water system well the location of the well shall be shown on the
				design plans. The separation distance between a community water system well and
				a sanitary sewer main may not be less than 50 feet.
2. Sanitary sewers shall be located with a
				minimum separation distance of 15 meters (50 feet) from private water system
				wells or any other wells subject to ch. NR 812.
3. Horizontal and vertical separation of
				sewers from public water mains shall comply with the requirements of s.
				NR
				811.67. Horizontal and vertical separation of sewer
				from private water laterals shall comply with the requirements of s.
				SPS 382.40(8)
				(b).
4. Cross-connections with public and private
				water supply systems are prohibited.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.14 - Sewage lift stations design criteria

Current through June 24, 2024
(1) GENERAL.
(a)
Applicability.
Lift
				stations may be approved when gravity sewers are not feasible or economical to
				transport the same design quantities of sewage.
(b)
Design report.
A design
				report shall be submitted with plans and specifications for all new sewage lift
				stations as well as the major rehabilitation of existing lift stations. Major
				lift station rehabilitation may include, but is not limited to, replacing pumps
				with larger units or changing the type of lift stations. The design report
				shall comply with the facilities planning requirements of s.
				NR 110.11,
				and shall contain the detailed design calculations for the lift station design
				capacity.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.15 - General requirements for sewage treatment facilities

Current through June 24, 2024
(1) DESIGN REPORT.
				A design report shall be submitted with plans and specifications for all sewage
				treatment facilities. This report shall summarize the design hydraulic loading,
				design biochemical oxygen demand (BOD), suspended solids and other appropriate
				pollutant loading, the sizing of treatment units, pump capacities, design
				calculations for major treatment units, and explain any deviations from the
				preliminary facilities planning design information which is required by s.
				NR 110.09(1)
				(b).
(2) EFFLUENT QUALITY.
(a)
Design.
Sewage treatment
				facilities shall be designed to achieve compliance with the monthly and weekly
				average effluent limitations for biochemical oxygen demand (BOD) and total
				suspended solids contained in ch. NR 210, or other WPDES permit requirements,
				as appropriate, or with any more stringent water quality related effluent
				limitations required to achieve appropriate water quality standards derived
				from chs.
				NR 102 to 106, or from any
				federally promulgated water quality standard for any waters of the
				state.
(b)
Treatment during
				construction.
During construction of new facilities, treatment shall
				be maintained at a level not less than that which existed prior to the start of
				construction.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.16 - Screening devices

Current through June 24, 2024
(1) GENERAL DESIGN CONSIDERATIONS.
(a)
Applicability.
All
				wastewater treatment plants shall be provided with protection for pumps and
				other equipment by installing coarse screens, bar racks, mechanically cleaned
				bar racks or comminutors.
(b)
Location.
1. Screening
				devices installed in a building where other equipment or offices are located
				shall be separated from the rest of the building and provided with separate
				outside entrances.
2. Screening
				devices shall be provided with convenient access.
3. Screening devices may not be located such
				that changes in backwater elevations will interfere with the accuracy of
				upstream flow measuring equipment.
(c)
Ventilation.
Screening
				areas shall be ventilated.
(d)
Channels.
1. The channel
				preceding and following the screen shall be shaped to minimize settling of
				solids. Fillets shall be installed as necessary.
2. The screen channel invert must be at least
				8 centimeters (3 inches) below the invert of the incoming sewer.
3. Where multiple screening units are
				installed the channels shall be equipped with the necessary gates to direct
				flow from any one screening unit. Methods for dewatering each channel shall be
				provided.
4. Entrance channels
				shall be designed to distribute flow uniformly to the screening
				units.
(e)
Handling screenings.
Adequate facilities must be provided for
				removal, handling and storage of screenings in a sanitary manner. Hand-cleaned
				screening facilities must include an accessible platform from which the
				operator may rake screenings. Suitable drainage facilities must be provided for
				both the platform and the storage areas.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.17 - Grit removal facilities

Current through June 24, 2024
(1) APPLICABILITY.
				Grit removal facilities are recommended for all sewage plants and are required
				for plants receiving sewage from combined sewers or from sewer systems
				receiving substantial amounts of grit.
(2) DESIGN CONSIDERATIONS.
(a)
Location.
Where
				practical, grit chambers should precede influent pumps. When installed, grit
				chambers shall precede all major treatment units.
(b)
Protection.
All grit
				chambers shall be preceded by a bar rack, coarse screen or
				comminutor.
(c)
Housed
				facilities.
1. Enclosed grit removal
				areas shall be ventilated. Fresh air shall be introduced continuously at a rate
				of 12 air changes per hour, or intermittently at a rate of 30 air changes per
				hour.
2. All electrical work in
				enclosed grit removal areas where hazardous gases may accumulate shall meet the
				requirements of the national electrical code for class 1, group D, division 1
				locations.
(d)
Number of units.
Grit removal facilities shall have at least 2
				hand-cleaned units, or a mechanically cleaned unit with a bypass.
(e)
Grit handling.
1. All facilities not provided with positive
				velocity control shall include means for grit washing to further separate
				organic and inorganic materials.
2.
				Grit removal facilities located in deep pits shall be provided with mechanical
				equipment for hoisting or transporting grit to ground level. Impervious,
				nonslip, working surfaces with adequate drainage shall be provided for grit
				handling areas. Storage areas for wasted grit shall be provided.
(f)
Basis of
				design.
Design of grit chambers shall be based on the size and
				specific gravity of the grit particle to be removed. If this information is not
				obtained from actual field measurements, then the design shall assume removal
				of all particles retained on a 65 mesh (0.21 mm) sieve and having a minimum
				specific gravity of 2.65. The design requirements of sub. (3) are based on
				these assumptions.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.18 - Settling tanks

Current through June 24, 2024
(1) DESIGN CONSIDERATIONS.
(a)
Multiple settling tanks.
1. Multiple settling tanks shall be provided
				at all sewage treatment plants with an average design flow which exceeds 1,890
				cubic meters per day (0.5 million gallons per day).
2. Control appurtenances such as valves,
				gates, splitter boxes, and flow measuring devices, shall be provided to divide
				inflow equally to each settling tank.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.19 - Trickling filters

Current through June 24, 2024
(1) APPLICABILITY.
(a)
Surface water discharge.
New trickling filters shall be used in conjunction with other treatment units
				which, in combination, will produce an acceptable level of treatment as defined
				in s.
				NR
				110.15(2) (a). Existing trickling
				filters may be used as a treatment unit in plant expansion if the effluent
				quality requirements of s.
				NR
				110.15(2) (a) are met.
(b)
Land disposal.
Trickling
				filter treatment systems are an acceptable means of treatment prior to land
				disposal of effluent.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.20 - Rotating biological contactors

Current through June 24, 2024
(1) GENERAL.
(a)
Applicability.
Rotating
				biological contactors may be used when the wastewater is amenable to biological
				treatment. This treatment process may be used for carbonaceous or nitrogenous
				oxygen demand reduction, or both.
(b)
Manufacturer's warranty.
Manufacturers of rotating biological contactor equipment shall guarantee the
				rotating shafts, and media against failure during the initial 5 years of
				operation for all proposed rotating biological contactor treatment systems. The
				guarantee shall include equipment replacement and installation costs.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.21 - Activated sludge

Current through June 24, 2024
(1) APPLICABILITY. The activated sludge
				process, and its various modifications, may be used where sewage is amenable to
				biological treatment.
(2) DESIGN
				REPORT. A design report shall be submitted in accordance with s.
				NR
				110.15(1).
(3) DESIGN CONSIDERATIONS.
(a)
Process selection.
The
				choice of activated sludge process will be influenced by the degree of
				treatment needed to achieve the required effluent limits, the proposed
				treatment facility size, and the characteristics of the waste to be
				treated.
(b)
Winter
				protection.
Activated sludge processes and aeration equipment which
				are subject to freezing or icing shall be designed to minimize the degree of
				freezing and icing.
(c)
Pretreatment.
Where primary settling tanks are not used,
				effective removal of grit, debris, excessive oil or grease, and comminution or
				screening of solids shall be provided prior to the activated sludge
				process.
(d)
Measuring
				devices.
Devices shall be installed for measuring and displaying flow
				rates of raw sewage or primary effluent, return sludge, and air to the aeration
				facilities. It is recommended that these devices totalize and record, as well
				as indicate, flows if the average design flow for the treatment plant is
				greater than 5,680 cubic meters per day (1.5 million gallons per
				day).
(e)
Equalization.
Equalization chambers shall be provided when
				large daily fluctuations of influent flow or organic loading are expected to
				occur.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.22 - Physical-chemical treatment

Current through June 24, 2024
(1) APPLICABILITY.
				Physical-chemical treatment processes may be used where appropriate to achieve
				the required effluent limits.
(2)
				DESIGN REPORT. A design report shall be submitted in accordance with s.
				NR
				110.05(1). The report shall detail
				any lab testing, pilot plant studies or operating experience used to design the
				physical-chemical process.
(3)
				CHEMICAL TREATMENT.
(a)
Chemical
				selection.
Selection of chemicals used in chemical treatment shall be
				based on the characteristics of the wastewater and constituents to be
				removed.
(b)
Design
				basis.
1. Design of chemical
				treatment processes shall be based on laboratory testing, pilot plant studies
				or practical operating experience.
2. Design of chemical treatment equipment,
				reactors, and appurtenances shall consider:
a. The chemical requirements and feed
				rates;
b. The location of chemical
				injection into the waste stream;
c.
				The need for rapid mixing and flocculation basins;
d. The settling characteristics of the
				chemical sludge;
e. The need for pH
				adjustment to optimize chemical reactions; and
f. The velocity of waste streams in flow
				conduits to minimize destruction of floc.
(c)
Phosphorus removal.
1. Addition of lime or the salts of aluminum
				or iron may be used for the chemical precipitation of soluble
				phosphorus.
2. The addition of
				polyelectrolytes to aid in the settling of phosphate precipitates should be
				considered.
3. Chemicals shall be
				mixed rapidly and thoroughly with the wastewater.
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.23 - Disinfection

Current through June 24, 2024
(1) GENERAL.
(a)
Applicability.
Disinfection shall be provided in accordance with WPDES permit
				requirements.
(b)
Effluent
				limitations.
1. When chlorine is used
				as the disinfectant, the residual concentration in the wastewater treatment
				facility effluent shall comply with WPDES permit requirements.
2. Effluent bacterial concentrations shall
				conform with WPDES permit requirements.
(c)
Process selection.
1. The selection of the method of
				disinfection shall be based on a cost effective comparison of disinfection
				methods.
2. Where a disinfection
				process other than chlorine is proposed, supporting data from pilot plant
				installations or similar full-scale installations shall be submitted as a basis
				for the design of the system in accordance with s.
				NR
				110.15(1).
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.24 - Lagoons

Current through June 24, 2024
(1) DESIGN REPORT. A design report shall be
				submitted in accordance with s.
				NR
				110.15(1).
(2) BASIS OF DESIGN.
(a)
Number of cells.
A
				minimum of 2 treatment cells shall be provided for aerated lagoons and
				stabilization ponds. Where a controlled discharge is required, additional
				effluent storage cells shall be provided.
1.
				For aerated lagoons designed to treat domestic wastewater only, the hydraulic
				detention time of each cell shall be based on the following formula:
View
				  Image
Where:
T = detention time, days
E = BOD removal efficiency, percent
K = Reaction coefficient (log base e),
				  days-1
a.
				For domestic wastewater K = 0.5 at 20°C.
b. The reaction coefficient (K) must be
				adjusted for temperature according to the formula:
KT = K20[THETA]T-20
Where:
KT = Corrected reaction
				  coefficient
K20 = 0.5
[THETA]= 1.07
T = Low design temperature, °C
Wisconsin Administrative Code › Department of Natural Resources › NR 100-199 - Environmental Protection - General › Chapter NR 110 - Sewerage Systems › Section NR 110.25 - General conditions required for all land disposal systems

Current through June 24, 2024
The provisions of this section apply to all municipal and
				  privately owned domestic sewage treatment works.
(1) APPLICABILITY. Land disposal systems
				shall be reviewed and approved on a case-by-case basis.
(2) DESIGN REPORT. A design report shall be
				submitted in accordance with s.
				NR
				110.15(1).
(3) TREATMENT PRIOR TO DISPOSAL. All
				discharges to land disposal systems shall receive biological, chemical,
				physical or a combination of treatments necessary to meet effluent standards in
				ch. NR 206 and groundwater quality standards in ch. NR 140 as approved by the
				department. Industrial waste discharges tributary to the municipal system shall
				be in compliance with applicable pretreatment standards under s.
				NR
				211.30.
(3m) MANAGEMENT PLAN.
(a) A management plan shall be submitted with
				plans and specifications for all land disposal facilities.
(b) The management plan shall contain
				specific information on pretreatment processes, scheduled maintenance,
				vegetative cover control and removal, load and rest schedules, application
				rates, operational strategies for periods of adverse weather, monitoring
				procedures and other pertinent information.