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HomeMy WebLinkAboutOrd. 108 - Shoreland SECTION SECTION 1.0 SECTION 2.0 SECTION 3.0 SECTION 4.0 SECTION 5.0 SECTION 6.0 SECTION 7.0 SECTION 8.0 TABLE OF CONTENTS STATUTORY AUTHORIZATION & POLICY GENERAL PROVISIONS & DEFINITIONS ADMINISTRATION 3.1 Permits Required 3.2 Certificates of Zoning Compliance 3.3 Variances 3.4 Notifications to DNR SHORELAND CLASSIFICATIONS AND LAND USE DISTRICTS 4,1 Shoreland Classification System 4.2 Land Use District Descriptions ZONING AND WATER SUPPLY/SANITARY PROVISIONS 5.1 5.2 Lot Area and width Standards Placement, Design, and Height of Structures Shore land Alterations Placement and Design of Roads, Driveways, and Parking Areas Stormwater Management Special provisions For: -Commercial, Industrial, Public, and Semi-public Uses -Agricultural Uses -Forestry -Extractive Uses -Mining of Metallic Minerals and Peat Conditional Uses Water Supply and Sewage Treatment 5.3 5.4 5.5 5.6 5.7 5.8 NONCONFORMITIES 6.1 Construction on Nonconforming Lots of Record 6.2 Additions/Expansions to Nonconforming Structures 6.3 Nonconforming Sewage Treatment Systems SUBDIVISION/PLATTING PROVISIONS PLANNED UNIT DEVELOPMENTS ~ 1 1 8 8 9 9 10 11 15 18 22 25 25 26 27 28 28 28 29 29 30 31 31 32 34 CITY OF ANDOVER COUNTY OF ANOKA STATE OF MINNESOTA ORDINANCE NO. 108 AN ORDINANCE REGULATING AND MANAGING SHORELANDS WITHIN THE CITY OF ANDOVER AND REPEALING ORDINANCE NO. 71 ADOPTED AUGUST 6, 1985. The City Council of the City of Andover does hereby ordain: SECTION 1.0 STATUTORY AUTHORIZATION AND POLICY 1.1 Statuto~ Authorization. This shoreland ordinance is adopted pursuant to the authorization and policies contained in Minnesota Statutes, Chapter 105, Minnesota Regulations, Parts 6120.2500 - 6120.3900, and the planning and zoning enabling legislation in Minnesota Statutes, Chapter 462. 1.2 Po1icv. The uncontrolled use of shore lands of the City of Andover, Minnesota affects the public health, safety, and general welfare, not only by contributing to pollution of public waters, but also by impairing the local tax base. Therefore, it is in the best interests of the public health, safety, and welfare to provide for the wise subdivision, use, and development of shore lands of public water. The Legislature of Minnesota has delegated responsibility to local governments of the state to regulate the subdivision, use, and development of the shorelands of public waters and thus preserve and enhance the quality of surface waters, conserve the economic and natural environmental values of shore lands , and provide for the wise use of waters and related land resources. This responsibility is hereby recognized by the City of Andover. SECTION 2.0 GENERAL PROVISIONS AND DEFINITIONS. 2.1 Jurisdiction. The provisions of this ordinance shall apply to the shorelands of the public water bodies as classified in Section 4,0 of this ordinance. Pursuant to Minnesota Regulations, parts 6120.2500 - 6120.3900; no lake, pond, or flowage less than 10 acres in size in municipalities, or 25 acres in size in unincorporated areas need be regulated in a local government's shoreland regulation. A body of water created by a private user where there was no previous shore land may, at the discretion of the governing body, be exempt from this ordinance, 2.2 ComD1iance. The use of any shoreland or public waters; the size and shape of lots; the use, size, type, and location of structures on lots; the installation and maintenance of water supply and waste treatment systems; the grading and filling of any shoreland area; the cutting of shore land vegetation; and the subdivision of land shall be in full compliance with the terms of this ordinance, and other applicable regulations. 2.3 Enforcement. The Zoning Administrator is responsible for the administration and enforcement of this ordinance. Any violation of the provisions of this ordinance, or failure to comply with any of its requirements (including violations of conditions and safeguards established in connection with grants of variances of conditional uses), shall constitute a misdemeanor and shall be punishable as defined by law. Violations of this ordinance can occur regardless of whether or not a permit is required for a regulated activity pursuant to Section 3.1 of this ordinance. 2.4 Interpretation. In their interpretation and application, the provisions of this ordinance shall be held to be minimum requirements, and shall be liberally construed in favor of the governing body, and shall not be deemed a limitation or repeal of any other powers granted by state statutes. 2.5 Severabilitv. If any section, clause, provision, or portion of this ordinance is adjudged unconstitutional or invalid by a court of competent jurisdiction, the remainder of this ordinance shall not be affected thereby. 2.6 Abroaation and Greater Restrictions. It is not intended by this ordinance to repeal, abrogate, or impair any existing easement, covenants, or deed restrictions. However, where this ordinance imposes greater restriction, the provisions of this ordinance shall prevail. All other ordinances inconsistent with this ordinance are hereby repealed to the extent of the inconsistency only. 2.7 Definitions. Unless specifically defined below, words or phrases used in this ordinance shall be interpreted so as to give them the same meaning as they have in common usage and so as to give this ordinance its most reasonable application. For the purpose of this ordinance, the words "must" and "shall" are mandatory and not permissive. All distances, unless otherwise specified, shall be measured horizontally. 2.711 Accessory structure or facility. "Accessory structure" or "facility" means any building or improvement subordinate to a principal use, which because of the nature of its use, can reasonably be located at or greater than normal structure setbacks. 2 712 Bluff "Bluff" means a topographic feature such as a hill, cliff, or embankment, having the following characteristics (an area with an average slope of less than 18 percent over a distance of 50 feet or more shall not be considered part of the bluff) : (1) Part or all of the feature is located in a shoreland area; (2) The slope rises at least 25 feet above the ordinary high water level of the waterbody; (3) The grade of the slope from the toe of the bluff to a point 25 feet or more above the ordinary high water level averages 30 percent or greater; and (4) The slope must drain toward the waterbody. 2 713 Bluff im~act zone. "bluff impact zone" means a bluff and land located within 20 feet from the top of a bluff. 3 2 714 Boathouse "Boathouse" means a structure designed and used solely for the storage of boats or boating equipment. 2.715 Building line "Building line" means a line parallel to a lot line or the ordinary high water level at the required setback, beyond which a structure may not extend. 2 716 Commercial planned unit developments "Commercial planned unit developments" are typically uses that provide transient, short-term lodging spaces, rooms, or parcels, and their operations are essentially service-oriented. For example; hotel/motel accommodations, resorts, recreational vehicle and camping parks, and other primarily service-oriented activities, are commercial planned unit developments. 2 717 Commercial use "Commercial use" means the principal use of land or buildings for the sale, lease, rental, or trade of products, goods, and services. 2.718 Commissioner "Commissioner" means the commissioner_of the Department of Natural Resources. 2 719 Conditional use "Conditional use" means a land use or development as defined by ordinance that would not be appropriate generally, but may be allowed with appropriate restrictions as provided by official controls upon a finding that certain conditions as detailed in the zoning ordinance exist, the use or development conforms to the comprehensive land use plan of the community, and the use is compatible with the existing neighborhood. 2.720 Deck "Deck" means a horizontal, unenclosed platform with or without attached railing, seats, trellises, or other features, attached or functionally related to a principal use or site, and at any point extending more than three feet above ground. 2 721 Duplex. triplex. and ~ad. "Duplex", "triplex", and "quad", means a dwelling structure on a single lot, having two, three, and four units respectively, being attached by common walls, and each unit equipped with separate sleeping, cooking, eating, living, and sanitation facilities. 2 722 Dwellino site "Dwelling site" means a designated location for residential use by one or more persons using temporary or movable shelter, including camping and recreational vehicle sites. 2 723 Dwelling unit "Dwelling unit" means any structure or portion of a structure, or other shelter designed as short or long-term living quarters for one or more persons, including rental or timeshare accommodations such as motel, hotel, resort rooms, and cabins. 4 2 724 Extractive use "Extractive use" means the use of land for surface or subsurface removal of sand, gravel, rock, industrial minerals, other nonmetallic minerals, and peat, not regulated under Minnesota Statutes, sections 93.44 to 93.51. 2.725 clear other Forest land conversion "Forest land conversion" means cutting of forested lands to prepare for a new land use than re-establishment of a subsequent forest stand. the 2 726 Guest cottage "Guest cottage" means a structure used as a dwelling unit that may contain sleeping spaces and kitchen and bathroom facilities in addition to those provided in the primary dwelling unit on a lot. 2 727 Hardship "Hardship" means the same as that term is defined in Minnesota Statutes, Chapter 462. 2 728 Height of building vertical distance between the building, or ten feet is lower, and the highest of the highest gable of a "Height of building" means the the highest adjoining ground level at above the lowest ground level; whichever point of a flat roof, or average height pitched or hipped roof. 2.729 Industrial use "Industrial use" means the use of land or buildings for the production, manufacture, warehousing, storage, or transfer of goods, products, commodities, or other wholesale items. 2.730 Intensive veaetation clearing "Intensive vegetation clearing" means the complete removal of trees or shrubs in a contiguous patch, strip, row, or block. 2.731 Lot. "Lot" means a parcel of land designated by plat, metes and bounds, registered land survey, auditors plot, or other accepted means; and separated from other parcels or portions by said description for the purpose of sale, lease, or separation. 2 732 Lot width "Lot width" means the shortest distance between lot lines measured at the midpoint of the building line. 2 733 Nonconformity "Nonconformity" means any legal use, structure, or parcel of land already in existence, recorded, or authorized, before the adoption of official controls or amendments thereto, that would not have been permitted to become established under the terms of the official controls as now written, if the official controls had been in effect prior to the date it was established, recorded, or authorized. 2.734 Ordinary high water level "Ordinary high water level" means the boundary of public waters and wetlands, and shall be an elevation delineating the highest water level which has been maintained for a sufficient period of time to leave evidence upon the landscape, commonly that point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial. For watercourses, the ordinary high water level is the elevation of the top of the bank of the channel. For reservoirs and 5 flowages, the ordinary high water level is the operating elevation of the normal summer pool, 2 735 Planned unit develonment "Planned unit development" means a type of development characterized by a unified site design for a number of dwelling units or dwelling sites on a parcel, whither for sale, rent, or lease, and also usually involving clustering of these units or sites to provide areas of common open space, density increases, and a mix of structure types and land uses. These developments may be organized and operated as condominiums, time-share condominiums, cooperatives, full fee ownership, commercial enterprises, or any combination of these, or cluster subdivisions of dwelling units, residential condominiums, townhouses, apartment building, campgrounds, recreational vehicle parks, resorts, hotels, motels, and conversions of structures and land uses to these uses. 2.736 Public waters "Public waters" means any waters as defined in Minnesota Statutes, section 105.37, subdivisions 14 and 15. 2 738 Semipublic Use "Semipublic use" means the use of land by a private, nonprofit organization to provide a public service that is ordinarily open to some persons outside the regular constituency of the organization. 2 739 Sensitive resource management "Sensitive resource management" means the preservation and management of areas unsuitable for development in their natural state due to constraints such as shallow soils over groundwater or bedrock, highly erosive of expansive soils, steep slopes, susceptibility to flooding, or occurrence of flora or fauna in need of special protection. 2 740 Setback. "Setback" means the minimum horizontal distance between a structure, sewage treatment system, or other facility and an ordinary high water level, sewage treatment system, top of a bluff, road, highway, property line, or other facility. 2 741 Sewage treatment svstem "Sewage treatment system" means a septic tank and soil absorption system or other individual or cluster type sewage treatment system as described and regulated in Section 5.8 of this ordinance. 2 742 Sewer system. "Sewer system" means pipelines or conduits, pumping stations, and force main, and all other construction, devices, appliances, or appurtenances used for conducting sewage or industrial waste or other wastes to a point of ultimate disposal. 2 743 Shore imnact zone "Shore impact zone" means land located between the ordinary high water level of a public water, and a line parallel to it at a setback of 50 percent of the structure setback. 6 2.744 Shoreland uShoreland" means land located within the following distances form public waters: 1,000 feet from the ordinary high water level of a lake, pond. or flowage; and 300 feet from a river or stream, or the landward extent of a floodplain designated by ordinance on a river or stream, whichever is greater. The limits of shorelands may be reduced whenever the waters involved are bounded by topographic divides which extend landward from the waters for lesser distances and when approved by the commissioner. 2 745 Significant historic site USignificant historic site" means any archaeological site, standing structure, or other property that meets the criteria for eligibility to the National Register of Historic Places, or is listed in the State Register of Historic Sites, or is determined to be an unplatted cemetery that falls under the provisions of Minnesota Statutes, section 307.08. A historic site meets these criteria if it is presently listed on either register or if it is determined to meet the qualifications for listing after review by the Minnesota state archaeologist or the director of the Minnesota Historical Society. All unplatted cemeteries are automatically considered to be significant historic sites. 2 746 Steep slone USteep slope" means land where agricultural activity or development is either not recommended or described as poorly suited due to slope steepness and the site's soil characteristic s, as mapped and described in available county soil surveys or other technical reports, unless appropriate design and construction techniques and farming practices are used in accordance with the provisions of this ordinance. Where specific information is not available, steep slopes are lands having average slopes over 12 percent, as measured over horizontal distances of 50 feet or more, that are not bluffs. 2 747 Structure UStructure" means any building or appurtenance, including decks, except aerial or underground utility lines, such as sewer, electric, telephone, telegraph, gas lines, towers, poles, and other supporting facilities. 2.748 Subdivision the purpose of sale, developments. USubdivision" means land that is divided for rent, or lease, including planned unit 2.749 Surface water-oriented commercial use uSurface water- oriented commercial use" means the use of land for commercial purposes, where access to and use ofa surface water feature is an integral part of the normal conductance of business. Marinas, resorts, and restaurants with transient docking facilities are examples of such use. 2 750 Toe of the bluff UToe of the bluff" means the lower point of a 50-foot segment with an average slope exceeding 18 percent. 2 751 Top of the bluff uTop of the bluff" means the higher point of a 50-foot segment with an average slope exceeding 18 percent. 7 2 752 Variance "Variance" means the same as that term is defined or described in Minnesota Statutes, Chapter 462. 2 753 Water-oriented accessory structure or facility "Water- oriented accessory structure or facility" means a small, above ground building or other improvement, except stairways, fences, docks, and retaining walls, which, because of the relationship of its use to a surface water feature, reasonably needs to be located closer to public waters than the normal structure setback. Examples of such structures and facilities include boathouses, gazebos, screen houses, fish houses, pump houses, and detached decks. 2.754 Wetland "Wetland" means a surface water feature classified as a wetland in the United States Fish and Wildlife Service Circular No, 39 (1971 edition). SECTION 3.0 ADMINISTRATION 3.1 Permits Reauired. ~ A permit is required for the construction of buildings or building additions (and including such related activities as construction of decks and signs), the installation and/or alteration of sewage treatment systems, and those grading and filling activities not exempted by Section 5.3 of this ordinance. Application for a permit shall be made to the Zoning Administrator on the forms provided. The application shall include the necessary information so that the Zoning Administrator can determine the site's suitability for the intended use and that a compliant sewage treatment system will be provided. ~ Permits shall stipulate that any identified nonconforming sewage treatment system, as defined by Section 5.8, shall be reconstructed or replaced in accordance with the provisions of this ordinance. 3.2 Certificate of Zonina compliance. The Zoning Administrator shall issue a certificate of zoning compliance for each activity requiring a permit as specified in Section 3.1 of this ordinance. This certificate will specify that the use of land conforms to the requirements of this ordinance. Any use, arrangement, or construction at variance with that authorized by permit shall be deemed a violation of this ordinance and shall be punishable as provided in Section 2.3 of this ordinance. 3.4 Notifications to the Deoartment of Natural Resources. ~ Copies of all notices of any public hearings to consider variances, amendments, or conditional uses under local shoreland management controls must be sent to the commissioner or the commissioner's designated representative and postmarked at least ten days before the hearings. Notices of hearings to consider proposed subdivisions/plats musty include copies of the subdivision/plat. 8 ~ A copy of approved amendments and subdivision /plats, and final decisions granting variances of conditional uses under local shoreland management controls must be sent to the commissioner or the commissioner's designated representative and postmarked within ten days of final action. 4.0 SHORELAND CLASSIFICATION SYSTEM AND LAND USE DISTRICTS. 4.1 Shore land Classification System. The public waters of the City of Andover have been classified below consistent with the criteria found in Minnesota Regulation, Part 6120.3300, and the Protected Waters Inventory Map for Anoka County, Minnesota. ~ The shoreland area for the waterbodies listed in sections 4.12 and 4.13 shall be as defined in section 2.744 and as shown on the Official Zoning Map. 4 12 Lakes ~ Natural Environment lakes Protected Waters Inventory ID #: DNR ID #2-74W DNR ID #2-85P DNR ID #2-86W DNR ID #2-87W DNR ID #2-88W DNR ID #2-90P DNR ID #2-8P DNR ID #2-89P ~ Recreational Development Lakes 1. Unnamed T32N, R24W 2. Ward Lake T32N, R24W 3. Unnamed T32N, R24W 4. Unnamed T32N, R24W 5. (Lake Leeman) Unnamed T32N, R24W 6. Bunker Late T32N, R24W ~ General Development Lakes 1. Crooked Lake T32N, R24W 2, Round Lake T32N, R24W 4 13 Rivers and Streams. ~ Remote Rivers None ~ Forested Rivers None ~ Transition Rivers None ~ Agricultural Rivers None ~ Urban Rivers None ~ Tributary Streams None 9 * All protected watercourses in the City of Andover shown on the Protected Water Inventory Map for Anoka County, a copy of which is hereby adopted by reference, not given a classification in Items A-E above shall be considered "Tributary". 4.2 Land Use District Descriptions. 4 21 Criteria for Designation. The land use districts in Section 4.22, and the delineation of a land use district's boundaries on the Official Zoning Map, must be consistent with the goals, policies, and objectives of the comprehensive land use plan and the following criteria, considerations, and objectives: ~ General Considerations and Criteria for All Land Uses: (1) preservation of natural areas; (2) present ownership and development of shoreland areas; (3) shoreland soil types and their engineering capabilities; (4) topographic characteristics; (5) vegetative cover; (6) in-water physical characteristics, values, and constraints; (7) recreational use of the surface water; (8) road and service center accessibility; (9) socioeconomic development needs and plans as they involve water and related land resources; (10) The land requirements of industry which, by its nature, requires location in shoreland areas; and (11) the necessity to preserve and restore certain areas having significant historical or ecological value. ~ Factors and Criteria for Planned Unit Developments: (1) existing recreational use of the surface waters and likely increases in use associated with planned unit developments; (2) physical and aesthetic impacts of increased density; (3) suitability of lands for the planned unit development in the area; and 10 (4) level of current development in the area; (5) amount and types of ownership of undeveloped lands, 4.22 Land use District Descriptions. These land use districts are in conformance with the criteria specified in Minnesota Regulation, Part 6120.3200, Subp. 3: ~ Land Use Districts for Lakes (1) Land Use District - Uses (R1, R2, R3, R4) General Recreational Natural Development Development Environment Lakes Lakes Lakes -Single residential P P P -Semipublic C C C -Parks and historic C C C sites -Extractive use C C C -Forest management P P P Mining of metallic minerals and C C C peat (2) High-Density Residential District - Uses (R5, M-1, and M-2) -Residential planned unit C C C developments -Surface water C C C oriented commercial * -Semipublic C C C -Parks and historic C C C sites -Duplex, triples, P P P quad residential -Forest management P P P 11 (3) Water Oriented Commercial District - Uses (GR, LB, NB, GB) -Surface water- P P C oriented commercial -Commercial planned unit C C C developmnt** -Public, semi-public C C C -Parks and historic C C C sites -Forest management P P P (4) General Use District - Uses (GR, LB, NB, I) -Commercial P P P -Commercial planned unit C C C developmnt** -Industrial C C C -Public, semi-public P P P -Extractive C C C use -Parks and historic C C C sites -Forest management P P P -Mining of metallic C C C minerals and peat *As accessory to a residential planned unit development. **Limited expansion of a commercial planned unit development involving up to six additional dwelling units or sites may be allowed as a permitted use provided the provisions of Section 8.0 of this ordinance are satisfied. ~ Land Use Districts for Rivers and Streams. The land use districts for rivers and streams (remote, forested, transition, agricultural, urban and tributar) shall comply with the land use district provisions as specified in Ordinance No.8, Section 7.01, Permitted Uses; Section 7.02, Accessory Uses; and Section 7.03, Special Uses. 12 4 23 Use and Upgradina of Inconsistent Land Use Districts ~ The land use districts adopted in Ordinance No. *, Section 6.0, as they apply to shore land areas, and their delineated boundaries on the Official Zoning Map, if found to inconsistent with the land use district designation criteria specified in Section 4.22 herein. These inconsistent land use district designations may continue until revisions are proposed to change either the land use district designation within an existing land use district boundary shown on the Official Zoning Map or to modify the boundary of an existing land use district shown of the Official Zoning Map. ~ When revision is proposed to and inconsistent land use district provision, the following additional criteria and procedures shall apply: (1) For Lakes. When a revision to a land use district designation on a lake is considered, the land use district boundaries and use provisions therein for all the shoreland areas within the jurisdiction of this ordinance on said lake must be revised to make them substantially compatible with the framework in Sections 4.21 and 4.22 of this ordinance, (2) For Rivers and Streams. When a revision to a land use district designation on a river or stream is proposed, the land use district boundaries and the use provisions therein for all shoreland on both sides of the river or stream within the same classification within the jurisdiction of these ordinance must be revised to make them substantially compatible with the framework in Sections 4.21 and 4,22 of this ordinance. If the same river classification is contiguous for more than a five-mile segment, only the shoreland for a distance of 2.5 miles upstream and downstream, or to the class boundary if closer, need be evaluated and revised. ~ When an interpretation question arises about whether a specific land use fits within a given "use" category, the interpretation shall be made by the Board of Adjustment. When a question arises as to whether a land use district's boundaries are properly delineated on the Official Zoning Map, this decision shall be made by the City Council. ~ When a revision is proposed to an inconsistent land use district provision by an individual party or landowner, this individual party or landowner will only be responsible to provide the supporting and/or substantiating information for the specific parcel in question. The Planning and Zoning Commission will direct the Zoning Administrator to provide such additional information for this waterbody as is necessary to satisfy Items A and B. 13 ~ The City Council must make a detailed finding or fact and conclusion when taking final action that this revision, and the upgrading of any inconsistent land use district designation on said waterbody, are consistent with the enumerated criteria and use provisions of Section 4.2, SECTION 5.0 ZONING AND WATER SUPPLY/SANITARY PROVISIONS. 5.1 Lot Area and Width Standards. The lot area (in square feet) and lot width standards (in feet) for single, duplex, triplex and quad residential lots created after the date of enactment of this ordinance for the lake and river/stream classifications are the following: 5 11 Unsewered Lakes ~ Natural Environment: Riparian Non- Lots riparian Lots Area Width Area Width Single 108,900 300 108,900 300 Duplex 120,000 300 160,000 400 Triplex 160,000 400 240,000 600 Quad 180,000 500 320,000 800 ~ Recreational Development: Riparian Non- Lots riparian Lots Area Width Area Width Single 108,900 300 108,900 300 Duplex 108,900 300 108,900 300 Triplex 120,000 300 120,000 375 Quad 160,000 375 160,000 490 ~ General Development: Riparian Non- Lots riparian Lots Area Width Area Width Single 20,000 100 40,000 150 Duplex 40,000 180 80,000 265 Triplex 60,000 260 120,000 375 Quad 80,000 340 160,000 490 14 5 12 Sewered Lakes ~ Natural Environment: Riparian Non- Lots riparian Lots Area Width Area Width Single 40,000 125 20,000 125 Duplex 70,000 225 35,000 220 Triplex 100,000 325 52,000 315 Quad 130,000 425 65,000 410 ~ Recreational Development: Riparian Non- Lots riparian Lots Area Width Area Width Single 20,000 80 15,000 80 Duplex 35,000 l35 26,000 l35 Triplex 50,000 195 38,000 190 Quad 65,000 255 49,000 245 ~ General Development: Riparian Non- Lots riparian Lots Area Width Area Width Single 15,000 80 U,400 80 Duplex 26,000 l35 26,000 l35 Triplex 38,000 195 25,000 190 Quad 49,000 255 32,500 245 5 13 River/stream Lot Width Standards There is no minimum lot size requirements for rivers and streams. The lot width standards for single, duplex, triples and quad residential developments for the six river/stream classifications are: Remote Forested Tran- Agricul- Urban & Tributarv sition tural No Sewer Sewer Single 300 200 250 150 100 80 Duplex 450 300 375 225 150 US Triplex 600 400 500 300 200 150 Quad 750 500 625 375 250 190 5 14 Additional Special provisions ~ Residential subdivisions with dwelling unit densities exceeding those in the tables in Sections 5.12 and 5.13 can only be allowed if designed and approved as residential planned unit developments under Section 8,0 of this ordinance. Only land above the ordinary high water level of public waters can be used to meet lot area standards, and lot width standards 15 must be met at both the ordinary high water level and at the building line. The sewer lot area dimensions in Section 5.12 and only be used if publicly owned sewer system service is available to the property. ~ Subdivisions of duplexes, triplexes, and quads on Natural Environment Lakes must also meet the following standards: (1) Each building must be set back at least woo feet form the ordinary high water level; (2) Each building must have common sewage treatment and water systems in one location and serve all dwelling units in the building; (3) Watercraft docking facilities for each lot must be centralized in one location and serve all dwelling units in the building; and (4) No more than 25 percent of a lake's shoreline can be in duplex, triplex, or quad developments. ~ One guest cottage may be allowed on lot meeting or exceeding the duplex lot area and width dimensions presented in Sections 5.11-5.13, provided the following standards are met: (1) For lots exceeding the minimum lot dimensions of duplex lots, the guest cottage must be located within the smallest duplex-sized lot that could be created including the principal dwelling unit; (2) feet and A guest cottage must not cover more than 700 square of land surface and must not exceed 15 feet in height; (3)A guest cottage must be located or designed to reduce its visibility as viewed from public waters and adjacent shore lands by vegetation, topography, increased setbacks, or color, assuming summer leaf-on conditions. (4) Meets the requirements of Ordinance No.8, Section 8.14, Guest Houses. ~ Lots intended as controlled accesses to public waters or as recreation areas for use by owners of nonriparion lots within subdivisions are permissible and must meet or exceed the following standards: (1) They must meet the width and size requirements for residential lots, and be suitable for the intended uses of controlled access lots. 16 (2) If docking, mooring, or over-water storage of more than six (6) watercraft is to be allowed at a controlled access lot, then the width of the lot (keeping the same lot depth) must be increased by the percent of the requirements for riparian residential lots for each watercraft beyond six, consistent with the following table: Controlled Access Lot Frontage Requirements: Ratio of Lake Size to Shore Required Increase in Length (acres/miles) Frontage (percent) . Less than 100 25 100-200 20 201-300 15 301-400 10 Greater than 400 5 (3) they must be jointly owned by all purchasers of lots in the subdivision who are provided riparian access rights on the access lot; and (4) Covenants or other equally effective legal instruments must be developed that specify which lot owners have authority to use the access lot and what activities are allowed. The activities may include watercraft launching, loading, storage, beaching, mooring, or docking, They must also include other outdoor recreational activities that do not significantly conflict with general public use of the public water or the enjoyment of normal property rights by adjacent property owners. Examples of the non-significant conflict activities include swimming, sunbathing, or picnicking. The covenants must limit the total number of vehicles allowed to be parked and the total number of watercraft allowed to be continuously moored, docked, or stored over water, and must require centralization of all common facilities and activities in the most suitable locations on the lot to minimize topographic and vegetation alterations. They must also require all parking areas, storage buildings, and other facilities to be screened by vegetation or topography as much as practical from view from the public water, assuming summer leaf-on conditions. 5.2 Placement. Design. and Height of Structures. 5.21 Placement of Structures on Lots When more than one setback applies to a site, structures and facilities must be located to meet all setbacks. Where structures exist on the adjoining lots on both sides of a proposed building site, structure setbacks may be altered without a variance to conform to the adjoining setbacks may be altered without a variance to conform to the adjoining setbacks from the ordinary high water level, provided the proposed building site is not located in a shore impact zone or in a bluff impact zone. Structures shall be located as follows: 17 ~ Structure and on-site sewage system setbacks (in feet) from ordinary high water level*. Setbacks* Classes of Unsewered Sewered Sewage Public Waters Structures Structures Treatment System Lakes Natural 150 150 150 Environment Recreational 100 75 75 Development General 75 50 50 Development Rivers Remote 200 200 150 Forested & 150 150 100 Transition Agriculture, 100 50 75 Urban, & Tributary *One water-oriented accessory structure designed in accordance with Section 5.22 of this ordinance may be set back a minimum distance of ten (10) feet from the ordinary high water level. ~ Additional Structure setbacks. The following additional structure setbacks apply, regardless or the classification of the waterbody: Setback From: Setback (in feet) (1) Top of bluff 30 (2) Unplatted cemetery 50 (3) right-of-way line of federal, state, or county 50 highway (4) right-of way line of town road, public street, or other roads or streets not 40 classified ~ Bluff Impact Zones. Structures and accessory facilities, except stairways and landing, must not be placed within bluff impact zones. ~ Uses Without Water-oriented Needs. Commercial, industrial, public and semi-public uses without water-oriented needs must be located on lots or parcels without public waters frontage, or, if located on lots or parcels with public waters formative, must either be set back double the normal ordinary high water level setback or be substantially screened from view from the water by vegetation of topography, assuming summer, leaf-on conditions. 18 5 22 Design Criteria for Structures ~ High Water Elevations. Structures must be placed in accordance with any flodplain regulations applicable to the site. Where these controls do not exist, the elevation to which the lowest floor, including basement, is placed of flood- proofed must be determined as follows: (1) for lakes, by placing the lowest floor at a level at least three feet above the highest known water level, or three feet above the ordinary high water level, whichever is higher; (2) for rivers and streams, by placing the lowest floor at least three feet above the flood of record, if data are available. If data are not available, by placing the lowest floor at least three feet above the ordinary high water level, or by conducting a technical evaluation to determine effects of proposed construction upon flood stages and flood flows and to establish a flood protection elevation. Under all three approaches, technical evaluations must be done by a qualified engineer or hydrologist consistent with parts 6120.5000 to 6120.6200 governing the management of flood plain areas. If more than one approach is used, the highest flood protection elevation determined must be used for placing structures and other facilities; and (3) water-oriented accessory structures may have the lowest floor placed lower than the elevation determined in this item if the structure is constructed of flood-resistant materials to the elevation, electrical and mechanical equipment is placed above the elevation and, if long duration flooding is anticipated, the structure is built to withstand ice action and wind-driven waves and debris. ~ Water-oriented Accessory Structures. Each lot may have one water-oriented accessory structure not meeting the normal structure setback in Section 5.21 of this ordinance if the water-oriented accessory structure complies with the following provisions: (1) the structure of facility must not exceed ten feet in height, exclusive of safety rails, and cannot occupy an area greater than 250 square feet. Detached decks must not exceed eight feet above grade at any point; (2) the setback of the structure or facility form the ordinary high water level must be at least ten feet; (3) the structure or facility must be treated to reduce visibility as viewed from public waters and adjacent shorelands by vegetation, topography, increased setbacks or color, assuming summer, leaf-on conditions; (4) the roof may be used as a deck with safety rails, but must not be enclosed or used as a storage area; 19 (5) the structure or facility must not be designed or used for human habitation and must not contain water supply of sewage treatment facilities; and (6) as an alternative for general development and recreational development waterbvodies, water-oriented accessory structures used solely for watercraft storage, and including storage of related boating and water-oriented sporting equipment, may occupy an area up to 400 square feet provided the maximum width of the structure is 20 feet as measured parallel to the configuration of the shoreline. ~ Stairways, Lifts, and Landings. Stairways and lifts are the preferred alternative to major topographic alteration for achieving access up and down bluffs and steed slopes to shore areas, Stairways and lifts must meet the following design requirements: (2) landings for stairways and lifts on residential lots must not exceed 32 square feet in area. Landings larger than 32 square feet may be used for commercial properties, public open-space recreational properties, and planned unit developments; (3) canopies or roofs are not allowed on stairways, lifts, or landings; (4) stairways, lifts, and landings may be either constructed above the ground on posts or pilings, or placed into the ground, provided they are designed and built in a manner that ensures control of soil erosion; (5) stairways, lifts, and landings must be located in the most visually inconspicuous portions of lots, as viewed from the surface of the public water assuming summer, leaf-on conditions, whenever practical; and (6) facilities such as ramps, lifts, or mobility paths for physically handicapped persons are also allowed for achieving access to shore areas, provid~d that the dimensional and performance standards of sub-items (1) to (5) are complied with in addition to the requirements of Minnesota Regulations, Chapter 1340. ~ Significant Historic Sites. No structure may be placed on a significant historic site in a manner that affects the values of the site unless adequate information about the'site has been removed and documented in a public repository. ~ Steep Slopes. The Zoning Administrator must evaluate possible soil erosion impacts and development visibility from public waters before issuing a permit for construction of sewage treatment systems, roads, driveways, structures, or other improvements on steep slopes. When determined necessary, conditions must be attached to issued permits to prevent 20 erosion and to preserve existing vegetation screening of structures, vehicles, and other facilities as viewed form the surface of public waters, assuming summer, leaf-on vegetation. 5 23 Height of Structures. All structures in city residential districts, except churches and non-residential agricultural structures, must not exceed 25 feet in height. 5.3 Shoreland Alterations. Alterations of vegetation and topography will be regulated to prevent erosion into public waters, fix nutrients, preserve shoreland aesthetics, preserve historic values, prevent bank slumping, and protect fish and wildlife habitat. 5.31 Vegetation Alterations ~ Vegetation alteration necessary for the construction of structures and sewage treatment systems and the construction of reads and parking areas regulated by Section 5.4 of this ordinance are exempt from the vegetation alteration standards that follow, ~ Removal or alteration of vegetation, except for agricultural and forest management uses as regulated in Section 5.62 and 5.63, respectfully, is allowed subject to the following standards: (1) Intensive vegetation clearing within the shore and bluff impact zones and on steep slopes is not allowed. Intensive vegetation clearing for forest land conversion to another use outside of these areas is allowable as a conditional use if an erosion control and sedimentation plan is developed and approved by the soil and water conservation district in which the property is located. (2) In shore and bluff impact zones and on steep slopes, limited clearing of trees and shrubs and cutting, pruning, and trimming of trees is allowed to provide a view to the water form the principal dwelling site and to accommodate the placement of stairways and landings, picnic areas, access paths, livestock watering areas, beach and watercraft access areas, and permitted water-oriented accessory structures or facilities, provided that: (a) the screening of structures, vehicles, or other facilities as viewed form the water, assuming summer, leaf-on conditions, is not substantially reduced; (b) along rivers, existing shading of water surfaces is preserved; and (c) the above provisions are not applicable to the removal of trees, limbs, or branches that are dead, diseased, or pose safety hazards, 5 32 TODogra~hic Alterations/Grading and Filling 21 ~ Grading and filling and excavations necessary for the construction of structures, sewage treatment systems, and driveways under validly issued construction permits for these facilities do not require the issuance of a separate grading and filling permit, However, the grading and filling standards in this section must be incorporated into the issuance of permits for construction of permits for construction of structures, sewage treatment systems, and driveways. ~ Public roads and parking areas are regulated by Section 5.4 of this ordinance. ~ Notwithstanding items ~ and ~ above, a grading and filling permit will be required for: (1) the movement of more than ten (10) cubic yards of material on steep slopes or within shore or bluff impact zones; and (2) the movement of more than 50 cubic yards of material outside of steep slopes and shore and bluff impact zones. ~ The following considerations and conditions must be adhered to during the issuance of construction permits, grading and grading and filling permits, conditional use permits, variances and subdivision approvals: (1) Grading or filling in any type 2, 3, 4, 5, 6, 7, or 8 wetland must evaluated 0 determine how extensively the proposed activity would affect the following functional qualities of the wetland*: (alsediment and pollutant trapping and retention; (blstorage of surface runoff to prevent or reduce flood damage; (e) fish and wildlife habitat; (d) recreational use; (elshoreline or and stabilization; and (f) noteworthiness, including special qualities such as historic significance, critical habitat for endangered plants and animals, or others. *This evaluation must also include a determination of whether the wetland alteration determination of whether the wetland alteration being proposed requires permits, reviews, or approvals by other local, state, or federal agencies such as a watershed district, the Minnesota Department of Natural Resources, or the United States Army Corps of Engineers. The applicant will be so advised. 22 (2) Alterations must be designed ands conducted in a manner that ensures only the smallest amount of bare ground is exposed for the shortest time possible; (3) Mulches or similar materials must be used, where necessary, for temporary bare soil coverage, and a permanent vegetation cover must be established as soon as possible; (4) Methods to minimize soil erosion and to trap sediments before they reach any surface water feature must be used; (5) Altered areas must be stabilized to acceptable erosion control standards consistent with the field office technical guides of the local soil and water conservation districts and the United States Soil Conservation Service; (6) Fill or excavated material must not be placed in a manner that creates an unstable slope; (7) Plans to place fill or excavated material on steep slopes must be reviewed by qualified professionals for continued slope stability and must not create finished slopes of 30 percent or greater; (8) Fill or excavated material must not be placed in bluff impact zones; (9) Any alterations below the ordinary high water level of public waters must first be authorized by the commissioner under Minnesota Statutes, section 105.42; (10) Alteration of topography must only be allowed if they are accessory to permitted or conditional uses and do not adversely affect adjacent or nearby properties, and (11) Placement of natural rock riprap, including associated grading of the shoreline and placement of a filter blanket, is permitted if the finished slope does not exceed three feet horizontal to one foot vertical, the landward extent of the riprap is within ten feet of the ordinary high water level, and the height of the riprap above the ordinary high water level does not exceed three feet. ~ Connections to public waters. Excavations where the intended purpose is connection to a public water, such as boat slips, canals, lagoons, and harbors, must be controlled by local shoreland controls. permission for excavations may be given only after the commissioner has approved the proposed connection to public waters. 5.4 Placement and Design of Roads. Driveways. and parkina Areas. ~ Public and private roads and parking areas must be designed to take advantage of natural vegetation and topography to achieve maximum screening from view from public waters. Documentation must be provided by a qualified individual that all roads and 23 parking areas are designed and constructed to minimize and control erosion to public waters consistent with the field office technical guides of the local soil and water conservation district, or other applicable technical materials. ~ Roads, driveways, and parking areas must meet structure setbacks and must not be placed within bluff and shore impact zones, when other reasonable and feasible placement alternatives exist. If no alternatives, exist, they may be placed within these areas, and must be designed to minimize adverse impacts. ~ Public and private watercraft access ramps, approach roads, and access-related parking areas may be placed within shore impact zones provided the vegetative screening and erosion control conditions of this subpart are met. For private facilities, the grading and filling provisions of Section 5.32 of this ordinance must be met. 5.5 Sormwater Management. The following general and specific standards shall apply: 5.51 General Standards: ~ When possible, existing natural drainage-ways, wetlands, and vegetated soil surfaces must be used to convey, store, filter, and retain stormwater runoff before discharge to public waters. ~ Development must be planned and conducted in a manner that will minimize the extent of disturbed areas, runoff velocities, erosion potential, and reduce and delay runoff volumes. Disturbed areas must be stabilized and protected as soon as possible and facilities or methods used to retain sediment on the site. ~ When development density, topographic features, and soil and vegetation conditions are not sufficient to adequately handle stormwater runoff using natural features and vegetation, various types of constructed facilities such as diversions, settling basins, skimming devices, dikes, waterways, and ponds may be used. Preference must be given to designs using surface drainage, vegetation, and infiltration rather than buried pipes and man-made materials, and facilities. 5.52 Specific Standards: ~ Impervious surface coverage of lots must not exceed 25 percent of the lot area. ~ When constructed facilities are used for stormwater management, documentation must be provided by a qualified individual that they are designed and installed consistent with the field office technical guide of the local soil and water conservation districts. 24 ~ New constructed stormwater outfalls to public waters must provide for filtering or settling of suspended solids and skimming of surface debris discharge. 5.6 Special provisions for Commercial. Industrial. Public/Semipublic. Aaricultural. Forestry and Extractive Uses and Minina of Metallic Minerals and Peat. 5 61 Standard for Commercial. Industrial. Public and Semipublic ~ ~ Surface water-oriented commercial uses and industrial. public. or semipublic uses with similar need to have access to and use of public waters may be located on parcels or lots with frontage on public waters. Those uses with water-oriented needs must meet the following standards: (1) in addition to meeting impervious coverage limits, setbacks, and other zoning standards in this ordinance, the uses must be designed to incorporate topographic and vegetative screening of parking areas and structures; (2) uses that require short-term watercraft mooring for patrons must centralize these facilities and design them to avoid obstructions of navigation and to be the minimum size necessary to meet the need; and (3) uses that depend on patrons arriving by watercraft may use signs and lighting to convey needed information to the public, subject to the following general standards: (a)in addition to meeting the sign requirements of Ordinance No.8, Section 8.07, no advertising sign or supporting facilities for signs may be placed in or upon any public waters. Signs conveying information or safety messages may be placed in or on public waters by a public authority or under a permit issued by the city of its duly designated agency; (b) signs may be placed, when necessary, within the shore impact zone if they are designed and sized to be the minimum necessary to convey needed information. They must only convey the location and name of the establishment and the general types of goods or services available. The sign must not contain other detailed information such as product brands and prices, must not be located higher than ten feet above the ground, and must not exceed 32 square feet in size. If illuminated by artificial lights, the lights must be shielded or directed to prevent illumination out across public waters; and (c) other outside lighting may be located within the shore impact zone or over public waters if it is used primarily to illuminate potential safety hazards and is shielded or otherwise directed to prevent direct illumination out 25 across public waters. This does not preclude use of navigational lights. ~ Uses without water-oriented needs must be located on lots or parcels without public waters frontage, or, if located on lots or parcels with public water frontage, must either be set back double the normal ordinary high water mark level setback, or be substantially screened from view from the water by vegetation or topography, assuming summer, leaf-on conditions. 5 62 Agricultural Use Standards ~ General cultivation, farming, grazing, nurseries, horticulture, truck farming, sod farming, and wild crop harvesting are permitted uses if steep slopes or shore impact zones are maintained in permanent vegetation or operated under an approved conservation plan (Resource Management Systems) consistent with the field office technical guides of the local soil and water conservation districts or the United States Soil Conservation Service, as provided by a qualified individual or agency. The shore impact zone for parcels with permitted agricultural land uses is equal to a line parallel to and 50 feet from the ordinary high water level. ~ Animal feedlots must meet the following standards: (1) new feedlots must not be located in the shoreland of watercourses or in bluff impact zones and must meet a minimum setback of 300 feet from the ordinary high water level of all public water basins; and (2) modifications or expansions to existing feedlots that are located within 300 feet of the ordinary high water level or within a bluff impact zone are allowed if they do not further encroach into the existing ordinary high water level setbacks, or encroach on bluff impact zones. 5 63 Forest Management Standards. The harvesting of timber and associated reforestation must be conducted consistent with the provisions of the Minnesota Nonpoint Source Pollution Assessment- Forestry and provisions of Water Quality in Forest Management "Best Management Practices in Minnesota". 5.64 Extractive Use Standards ~ Site Development and Restoration Plan. In addition to complying with the provisions of Ordinance. No.8, Section 4.24, an extractive use site development and restoration plan must be developed, approved, and followed over the course of operation of the site. The plan must address dust, noise, possible pollutant discharges, hours and duration of operation, and anticipated vegetation and topographic alterations. It must also identify topographic alterations. It must also identify actions to be taken during operation to mitigate actions to be taken during operation to mitigate adverse environmental impacts, particularly erosion, and must clearly 26 explain how the site will be rehabilitated after extractive activities end. ~ Setbacks of Processing Machinery. Processing machinery must be located consistent with setback standards for structures from ordinary high water levels of public waters and from bluffs. 5 65 Mining of Metallic Minerals and Peat Mining of metallic minerals and peat as defined in Minnesota Statutes, Sections 93,44 to 93.5~, shall be a conditional use. The provisions of Minnesota Statutes, Sections 93.44 to 93.5~, must be satisfied. 5.7 Conditional Uses. Conditional uses allowable within the shoreland areas shall be subject to the review and approval procedures, and criteria and conditions for review of conditional uses established in Ordinance No.8, Section 5.03. The following additional evaluation criteria and conditions apply within shoreland areas: 5 7~ body site Evaluation Criteria. A thorough evaluation of the water and the topographic, vegetation, and soil conditions on the must be made to ensure: (~) the prevention of soil erosion or other possible pollution of public waters, both during and after construction; (2) the visibility of structure and other facilities as viewed from public water is limited; (3) the site is adequate for water supply and on-site sewage treatment; and (4) the types, uses, and numbers of watercraft that the project will generate are compatible in relation to the suitability of public waters to safely accommodate these watercraft. 5.72 Conditions Attached to Conditional Use Permits The city council, upon consideration of the criteria listed above and the purposes of this ordinance, shall attach such conditions to the issuance of the conditional use permits as it deems necessary to fulfill the purposes of this ordinance. Such conditions may include, but are not limited to the following: (~) increased setbacks from the ordinary high water level; (2) limitations of the natural vegetation to be removed or the requirement that additional vegetation be planted; and (3) special provisions for the location, design, and use of structures, sewage treatment systems, watercraft launching and docking areas, and vehicle parking areas. 27 5.8 Water Supply and Sewage Treatment. 5 81 Water Supply Any public or private supply of water for domestic purposes must meet or exceed standards for water quality of the Minnesota Department of Health and the Minnesota Pollution Control Agency. 5 82 Sewage Treatment must be provided with an follows: Any premises used for human occupancy adequate method of sewage treatment, as ~ Publicly-owned sewer systems must be used where available. ~ All private sewage treatment systems must meet or exceed the Minnesota Pollution Control Agency's standards for individual sewage treatment systems contained in the document titled, "Individual Sewage Treatment Systems Standards, Chapter 7080", a copy of which is hereby adopted to be a part of this ordinance. ~ On-site sewage treatment systems must be set back from the ordinary high water level in accordance with the setbacks contained in Section 5.21 of this ordinance. ~ All proposed sites for individual sewage treatment systems shall be evaluated in accordance with the criteria in subitems (1)-(4). If the determination of the site's suitability cannot be made with publicly available, existing information, it shall then be the responsibility of the applicant to provide sufficient soil boring and percolation tests from on-site field investigations. Evaluation Criteria: (1) depth to the highest known or calculated ground water table or bedrock; (2) soil conditions, properties, and permeability; (3) slope; (4) the existence of lowlands, local surface depressions, and rock outcrops. ~ Nonconforming sewage treatment systems shall be regulated and upgraded in accordance with Section 6.3 of this ordinance. SECTION 6.0 NONCONFORMITIES. All legally established nonconformities as of the date of this ordinance may continue, but they will be managed according to applicable state statutes and other regulations of the City of Andover for the subjects of: alterations and additions, repair after damage, discontinuance of use, and intensification of use; except that the following standards will also apply in shoreland areas: 28 6.1 Construction on Nonconformina Lots of Record. ~ Lots of record in the office of the county recorder on the date of the enactment of local shoreland controls that do not meet the requirements of Section 5.1 of this ordinance may be allowed as building sites without variances from lot size requirements provided the use is permitted in the zoning district, the lot has been in separate ownership from abutting lands at all times since it became substandard, was created compliant with official controls in effect at the time, and sewage treatment and setback requirements of this ordinance are met. ~ A variance from setback requirements must be obtained before any use, sewage treatment system, or building permit is issued for a lot. In evaluation the variance, the board of adjustments shall consider sewage treatment and water supply capabilities or constraints of the lot, and shall deny the variance if adequate facilities cannot be provided. ~ If, in a group of two or more contiguous lots under the same ownership, any individual lot does not meet the requirements of Section 5.1 of this ordinance, the lot must not be considered as a separate parcel of land for the purposes of sale or development, The lot must be combined with one or more contiguous lots so they equal one or more parcels of land, each meeting the requirements of Section 5.1 of this ordinance as much as possible. 6.2 Additions/E~ansions to Nonconformina Structures. ~ All additions or expansions to the outside dimensions of an existing nonconforming structure must meet the setback, height, and other requirements of Section 5.0 of this ordinance. Any deviation from these requirements must be authorized by a variance pursuant to Section 3.3. ~ Deck additions may be allowed without a variance to a structure not meeting the required setback from the ordinary high water level if all of the following criteria and standards are met: (1) the structure existed on the date the structure setbacks were established; (2) a thorough evaluation of the property and structure reveals no reasonable location for a deck meeting or exceeding the existing ordinary high water level setback of the structure; (3) the deck encroachment toward the ordinary high water level does not exceed 15 percent of the existing setback of the structure from the ordinary high water level or does not encroach closer than 30 feet, whichever is more restrictive; and 29 (4) the deck is constructed primarily of wood, and is not roofed or screened. 6.3 Nonconfor.mina Sewaae Treatment Svstems. ~ A sewage treatment system not meeting the requirements of Section 5.8 of this ordinance must be upgraded, at a minimum, at any time a permit or variance of any type is required for any improvement on, or use of, the property. For the purposes of this provision, a sewage treatment system shall not be considered nonconforming if the only deficiency is the sewage treatments system's improper setback from the ordinary high water level. ~ The City Council of the City of Andover has by formal resolution notified the commissioner of its program to identify nonconforming sewage treatment systems. The City of Andover will require upgrading of replacement of any nonconforming system identified by this program within a reasonable period of time which will not exceed 2 years. Sewage systems installed according to all applicable local shoreland management standards adopted under Minnesota Statutes, Section 105.485, in effect at the time of installation may be considered as conforming unless they are determined to be failing, except that systems using cesspools, leaching pits, seepage pits, or other deep disposal methods, or systems with less soil treatment area separation above groundwater than required by the Minnesota Pollution Control Agency's Chapter 7080 for design of on-site sewage treatment systems, shall be considered nonconforming. SECTION 7.0 SUBDIVISION/PLATTING PROVISIONS. 7.11 Land Suitabilitv. Each lot created through subdivis10n, including planned unit developments authorized under Section 8.0 of this ordinance, must be suitable in its natural state for the proposed use with minimal alteration. Suitability analysis by the local unit of government shall consider susceptibility to flooding, existence of wetlands, soil and rock formations with severe limitations for development, severe erosion potential, steep topography, inadequate water supply or sewage treatment capabilities, near-shore aquatic conditions unsuitable for water-based recreation, important fish and wildlife habitat, presence of significant historic sites, or any other feature of the natural land likely to be harmful to the health, safety, or welfare of future residents of the proposed subdivision or of the community. 7.12 Consistencv With Other Controls. Subdivisions must conform to all official controls of this community. A subdivision will not be approved where a later variance from one or more standards in official controls would be needed to use the lots for their intended purpose. In areas not served by publicly owned sewer and water systems, a subdivision will not be approved unless domestic water supply is available and a sewage treatment system consistent with Section 5.2 and 5.8 can be provided for every lot. Each lot shall meet the minimum lot size and dimensional requirements of Section 30 5.~, including at least a minimum contiguous lawn area, that is free of limiting factors sufficient for the construction of two standard soil treatment systems. Lots that would require use of holding tanks must not be approved. 7.13 Information Requirements. Sufficient information must be submitted by the applicant for community to make a determination of land suitability. The information shall include at least the following: (~) topographic contours at ten-foot intervals or less from United States Geological Survey maps or more accurate sources, showing limiting site characteristics; (2) the surface water features required in Minnesota Statutes, Section 505.2, Subdivision 1, to be shown on plats, obtained from United States Geological Survey quadrangle topographic maps or more accurate sources; (3) adequate soils information to determine suitability for building and on-site sewage treatment capabilities for every lot from the most current existing sources or from field investigations such as soil borings, percolation tests, or other methods; (4) information regarding adequacy of domestic water supply; extent of anticipated vegetation and topographic alterations; near-shore aquatic conditions, including depths, types of bottom sediments, and aquatic vegetation; and proposed methods for controlling stormwater runoff and erosion, both during and after construction activities; (5) location of ~OO-year flood plain areas and floodway districts form existing adopted maps or data; and (6) a line or contour representing the ordinary high water level, the "toe" and the "top" of bluffs, and the minimum building setback distances from the top of the bluff and the lake or stream. 7.14 Dedications. When a land or easement dedication is a condition of subdivision approval, the approval must provide easement over natural drainage or ponding areas for management of stormwater and significant wetlands. 7.15 Plattina. All subdivision that create five or more lots or parcels that are 2-~/2 acres of less in size shall be processed as a plat in accordance with Minnesota Statutes, Chapter 505. No permit for construction of buildings or sewage treatment systems shall be issued for lots created after these official controls were enacted unless the lot was approved as part of a formal subdivision. 7.16 Controlled Access or Recreational Lots. Lots intended as controlled access to public waters or for recreation use areas for use by nonriparian lots within a subdivision must meet or exceed the sizing criteria in Section 5.~4 of this ordinance. 31 8.0 PLANNED UNIT DEVELOPMENTS (POD's) 8.1 TYPes of POD'sPermissib1e. Planned unit developments (PUD's) are allowed for new projects on undeveloped land, redevelopment of previously built sites, or conversions of existing buildings and land. The land use districts in which they are an allowable use are identified in the land use district descriptions in Section 4.2 of this ordinance and per Ordinance No.8, Section 4.18. 8.2 processina of PUD's. Planned unit development must be processed as a conditional use. The expansion to an existing commercial PUD involving 6 or less new dwelling units or sites since the date this ordinance was adopted is permissible provided an amended Conditional Use Permit is granted and the total project density does not exceed the allowable densities calculated in the project density evaluation procedures in Section 8.5. The provisions of Ordinance No.8, Section 4.18 and 5.03 shall apply. Approval cannot occur until the environmental review process (EAW/EIS) is complete. 8.3 Aoo1ication for a POD. The applicant for a PUD must submit the following documents (in addition to the requirements as specified on Ordinance No.8, Section 4.18, Planned Unit Developments and Ordinance No. 10, Subdivision) prior to final action being taken on the application request: ~ A site plan and/or plat for the project showing location of property boundaries, surface water features, existing and proposed structures and other facilities, land alteration, sewage treatment and water supply systems (where public systems will not be provided), and topographic contours at ten-foot intervals or less. When a PUD is a combined commercial and residential development, the site plan/plat must indicate and distinguish which building and portions of the project are residential, commercial, or a combination of the two. ~ A property owner association agreement (for residential PUD's) with mandatory membership, and all accordance with the requirements of Section 8.6 of this ordinance. ~ Deed restriction, covenants, permanent easement, or other instruments that: (1) properly address future vegetative and topographic alterations, construction of additional buildings, beaching of watercraft, and construction of commercial buildings in residential PUD's; and (2) ensure the long-term preservation and maintenance of open space in accordance with the criteria and analysis specified in Section 8.6 of this ordinance. ~ When necessary, a mater plan/drawing describing the project and the floor plan for all commercial structures to be occupied. 32 ~ Those additional documents as requested by the Planning and Zoning and City Council that are necessary to explain how PUD will be designed and will function. 8.4 Site "Suitable Area" Evaluation. Proposed new or expansions to existing planned unit developments must be evaluated using the following procedures and standards to determine the suitable area for the dwelling unit/dwelling site density evaluation in Section 8.5. ~ The project parcel must be divided into tiers by locating one or more lines approximately parallel to a line that identifies the ordinary high water level at the following intervals, proceeding landward: Shoreland Tier Dimensions Unserered Sewered (feet) (feet) General development lakes- first tier 200 200 General development lakes- second and additional 267 200 tiers Recreational development lakes 267 267 Natural environment lakes 400 320 All river classes 300 300 ~ The suitable area within each tier is next calculated by excluding from the tier area all wetlands, bluffs, or land below the ordinary high water level of public waters. This suitable area and the proposed project are then subjected to either the residential or commercial planned unit development density evaluation steps to arrive at an allowable number of dwelling units or sites. 8,5 Residential and Commercial PUD Densitv Evaluation. The procedures for determining the "base" density of a PUD and density increase multipliers are as follows: Allowable densities may be transferred from any tier to any other tier further from the waterbody, but must not be transferred to any other tier closer. 8 51 Commercial PUD "Base" Density Evaluation. ~ The suitable area within each tier is divided by the single residential lot size standard for lakes or, for rivers, the single residential lot width standard times the tier depth, unless the local unit of government has specified an alternative minimum lot size for rivers which shall then be used to yield a base density of dwelling units or sites for each tier. Proposed location and numbers of dwelling units or sites for the residential planned unit developments are then compared with the tier, density, and suitability analysis herein and the design criteria in Section 8.6. 33 8.52 Commercial PUD "Base" densitv Evaluation. ~ Determine the average inside living area size of dwelling units or sites within each tier, including both existing and proposed units and sites. Computation of inside living area sizes need not include decks, patios, stoops, steps, garages, or porches and basements, unless they are habitable space. ~ Select the appropriate floor area ratio from the following table: Commercial Planned Unit Development Floor Area Ratios* Public Waters Classes Sewered Second and general additional *Average unit development tiers on Natural floor area lakes; first unsewered environment (sq. ft. ) tier on general lakes and unsewered development remote river general lakes; segments development recreational lakes; urban, development agricultural, lakes; tributary transition river and forested segments river segments 200 .040 .020 .O~O 300 .048 .024 .0~2 400 .056 .028 .0~4 500 .065 .032 .0~6 600 .072 .038 .0~9 700 .082 .042 .02~ 800 ,09~ .046 .023 900 .099 .050 .025 ~,OOO .~08 .054 .027 ~,~OO .~~6 .058 .029 ~,200 .~25 .064 .032 ~,300 .~33 .068 .034 ~,400 .~42 .072 .036 ~,500 .~50 .075 .038 *For average unit floor areas less than shown, use the floor area ratios listed for 200 square feet. For areas greater than shown, use the ratios listed for ~,500 square feet. For recreational camping areas, use the ratios listed at 400 square feet. Manufactured home sites in recreational camping areas shall use a ratio equal to the size of the manufactured home, or if unknown, the ratio listed for 1,000 square feet. ~ Multiply the suitable area within each tier by the floor area ratio to yield total floor area for each tier allowed to be used for dwelling units or sites. 34 ~ Divide the total floor area by tier computed in Item ~ above by the average inside living area size determined in Item ~ above. This yields a base number of dwelling unit and sites for each tier. ~ Proposed locations and numbers of dwelling units or sites for the commercial planned unit development are then compared with the tier, density and suitability analysis herein and the design criteria in section 8.6. 8.53 Density Increase Multipliers ~ Increases to the dwelling unit or dwelling sit base densities previously determined are allowable if the dimensional standards in Section 5.0 are met or exceeded and the design criteria in Section 8.6 are satisfied. The allowable density increases in Item ~ below will only be allowed if structure setbacks from the ordinary high water level are increased to at least 50 percent greater than the minimum setback, or the impact on the waterbody is reduced an equivalent amount through vegetative management, topography, or additional means acceptable to the local unit of government and the setback is at least 25 percent greater than the minimum setback. ~ Allowable Dwelling Unit or Dwelling Site Density Increases of Residential or Commercial Planned Unit Developments: Density evaluation tiers Maximum density increase within each tier (percent) First 50 Second 100 Third 200 Fourth 200 Fifth 200 8.6 Maintenance and Desian Criteria. 8 61 Maintenance and Administration Requirements. ~ Before final approval of a Planned Unit Development, adequate provisions must be developed for preservation and maintenance in perpetuity of open spaces and for the continued existence and functioning of the development. ~ Open space preservation. Deed restrictions, covenants, permanent easements, public dedication and acceptance, or other equally effective and permanent preservation and maintenance of open space. The instruments must include all of the following protections: (1) commercial uses prohibited (for residential PUD's); (2) vegetation and topographic alteration other than routine maintenance prohibited; 35 (3) construction of additional buildings or storage of vehicles and other materials prohibited; and (4) uncontrolled beaching of watercraft prohibited. ~ Development organi~ation and functioning. Unless an equally effective alternative community framework is established, when applicable, all residential planned unit developments must use an owners association with the following features: (1) membership must be mandatory for each dwelling unit or site purchaser and any successive purchasers; (2) each member must pay a pro rata share of the association's expenses, and unpaid assessments can become liens on units or sites; (3) assessments must be adjustable to accommodate changing conditions, and (4) the association must be responsible for insurance, taxes, and maintenance of all commonly owned property and facilities. 8 62 Open Space Reauirements Planned unit developments must contain open space meeting all of the following criteria: (1) at least 50 percent of the total project area must be preserved as open space; (2) dwelling units or sites, road rights-of-way, or land covered by road surfaces, parking areas, or structures, except water oriented accessory structures or facilities, are developed areas and shall not be included in the computation of minimum open space; (3) open space must include areas with physical characteristics unsuitable for development in their natural state, and areas containing significant historic sites or unplatted cemeteries; (4) open space may include outdoor recreational facilities for use by owners of dwelling units or sites, by guests staying in commercial dwelling units or sites, and by the general public; (5) open space may include subsurface sewage treatment systems if the use of the space is restricted to avoid adverse impacts on the systems; (6) open space must not include commercial facilities or uses, but may contain water-oriented accessory structures or facilities; 36 (7) the appearance of open space areas, including topography, vegetation, and allowable uses, must be preserved by use of restrictive deed covenants, permanent easements, public dedication and acceptance, or other equally effective and permanent means; and (8) the shore impact zone, based on normal structure setbacks, must be included as open space. For residential PUD's, at least 50 percent of the shore impact zone area of existing developments or at least 70 percent of the shore impact zone area of new developments must be preserved in its natural or existing state. For commercial PUD's, at least 50 percent of the shore impact zone must be preserved in its natural state. 8.63 Erosion Control and Stormwater Mana~ement Erosion control and stormwater management plans must be developed and the PUD must: (1) be designed, and the construction managed, to minimize the likelihood of serious erosion occurring either during or after construction. This must be accomplished by limiting the amount and length of time of bare ground exposure. Temporary ground covers, sediment entrapment facilities, vegetated buffer strips, or other appropriate techniques must be used to minimize erosion impact on surface water features. Erosion control plans approved by a soil and water conservation district may be required if project size and site physical characteristics warrant; and (2) be designed and constructed to effectively manage reasonable expected quantities and qualities of stormwater runoff. Impervious surface coverage within any tier must not exceed 25 percent of the tier area, except that for commercial PUD's 35 percent impervious surface coverage may be allowed in the first tier of general development lakes with an approved stormwater management plan and consistency with Section 5.3. 8.64 Centralization and Desi~n of Facilities. Centralization and design of facilities and structures must be done according to the following standards: (1) Planned Unit Developments must be connected to publicly owned water supply and sewer systems, if available. On-site water supply and sewage treatment systems must be centralized and designed and installed to meet or exceed applicable standards or rules of the Minnesota Department of Health and Sections 5.2 and 5.8 of this ordinance. On-site sewage treatment systems must be located on the most suitable areas of the development, and sufficient lawn area free of limiting factors must be provided for a replacement soil treatment system for each sewage system; (2) dwelling units or sites must be clustered into one or more groups and located on suitable areas of the 37 development. They must be designed and located to meet or exceed the following dimensional standard for the relevant shoreland classification: setback from the ordinary high water level, elevation above the surface water features, and maximum height. Setbacks from the ordinary high water level must be increased in accordance with Section 8.53 of this ordinance for developments with density increases; (3) shore recreation facilities, including but not limited to swimming areas, docks, and watercraft mooring areas and launching ramps, must be centralized and located in areas suitable for them. Evaluation of suitability must include consideration of land slope, water depth, vegetation, soils, depth to groundwater and bedrock, or other relevant factors. The number of spaces provided for continuous beaching, mooring, or docking of watercraft must not exceed one for each allowable dwelling unit of site in the first tier (notwithstanding existing mooring sites in an existing commercially used harbor). Launching ramp facilities, including a small dock for loading and unloading equipment, may be provided for use by occupants of dwelling units or sites located in other tiers; (4) structures, parking areas, and other facilities must be treated to reduce visibility as viewed from public waters and adjacent shore lands by vegetation, topography, increased setbacks, color, or other means acceptable to the local unit of government, assuming summer, leaf-on conditions. Vegetative and topographic screening must be preserved, if existing, or may be required to be provided; (5) accessory structures and facilities, except water oriented accessory structures, must meet the required principal structure setback and must be centralized; and (6) water-oriented accessory structures and facilities may be allowed if they meet or exceed design standards contained in Section 5.2 of this ordinance and are centralized. 8.7 Conversions. Local governments may allow existing resorts or other land used and facilities to be converted to residential Planned Unit Developments if all of the following standards are met: 8.7l Proposed Conversions Proposed conversion must be initially evaluated using the same procedures for residential planned unit developments involving all new construction. Inconsistencies between existing features of the development and these standards must be identified. 8 72 sewage space, of the Deficiencies Deficiencies involving water supply and treatment, structure color, impervious coverage, open and shore recreation facilities must be corrected as part conversion or as specified in the conditional use permit. 38 8 73 Shore and Bluff. Shore and bluff impact zone deficiencies must be evaluated and reasonable improvements made as part of the conversion. These improvements must include, where applicable, the following: (1) removal of extraneous buildings, docks, or other facilities that no longer need to be located in shore or bluff impact zones; (2) remedial measures to correct erosion sites and improve vegetative cover and screening of buildings and other facilities as viewed from the water; and (3) if existing dwelling units are located in shore or bluff impact zones, conditions are attached to approvals of conversions that preclude exterior expansions in any dimension or substantial alterations. The conditions must also provide for future relocation of dwelling units, where feasible, to other locations, meeting all setback and elevation requirements when they are rebuilt or replaced. 8 74 Existing Existing dwelling unit or dwelling site densities that exceed standards in Section 8.5 may be allowed to continue but must not be allowed to be increased, either at the time of conversion or in the future. Efforts must be made during the conversion to limit impacts of high densities by requiring seasonal use, improving vegetative screening, centralizing shore recreation facilities, installing new sewage treatment systems, or other means. Adopted by the City Council of the City of Andover on this 20th day of September, 1994. ATTEST: CITY OF ANDOVER Victoria Volk, City Clerk J, E. McKelvey, Mayor 39 CITY OF ANDOVER COUNTY OF ANOKA STATE OF MINNESOTA Ordinance No, 10M. AN ORDINANCE AMENDING ORDINANCE NO. 108, THE SHORELAND ORDINANCE OF THE CITY OF ANDOVER. THE CITY COUNCIL OF THE CITY OF ANDOVER HEREBY ORDAINS: Ordinance No. 108 is hereby amended as follows: Section 2.7225 is amended as follows: 2.7225 Feedlot. "Feedlot" means an area where fifteen (15) or more Qon- domestic animals are confined. Section 4.12 is amended as follows: 4.12 ~ B. Recreational Development Lakes Protected Waters Inventory LD. # 1. Unnamed T32N, R 24W. Sect. 36 2. Ward Lake T32N, R 24W. Sect. 1,2. 12 3. Unnamed T32N, R24W. Sect. 4 4. Unnamed T32N, R 24W. Sect. 7 5. (Lake Leeman) Unnamed T32N, R 24W. Sect. 12 6. Bunker Lake T32N, R 24W, Sect. 35. 36 DNR ID #2-74W DNR ID #2-85P DNR ID #2-86W DNR ID #2-87W DNR ID #2-88W DNR ID #2-90P C. General Development Lakes 1. Crooked Lake T32N, R24W. Sect. 33 2. Round Lake T32N, R24W. Sect. 20. 29 DNR ID #2-84P DNR ID #8-89P Section 4,13 is amended as follows: 4.13 Rivers and Streams. See Ordinance Number 52. Scenic River Ordinance A: Remote Rivers Page Two Amendment Shoreland Ord. (No. 108) November 19,1996 Nene Ih Farestea Riyers Nene G., TFaflsitisn Rivers Nene I* .^.:griel::lltuml. Rivers Nene E: Urban Rivers Nene ~ Triel:ltary Str-eams Nene * All pl.'steetea watere01:l:l'ses iB the City sf .^ .nElsver shElv/R an the Preteetea Waters IRventary Map far :\naka emmty, a eailY of ' shieh is hereby aElsflteEl by refereBee, eot giyeB a elassifieatien iB Items .\ E abave shall ee eaBsidereEl "Tribl:ltary". Section 5.22 is amended as follows: B. Water-oriented Accessory Structures. Each lot may have one water- oriented accessory structure not meeting the normal structure setback in Section 5.21 of this ordinance if the water-oriented accessory structure complies with the following provisions: (7) Decks shall not be considered as an accessory structure when attached to the primary structure. Section 5.62 is amended as follows: 5.62 Agricultural Use Standards. Page Three Amendment Shoreland Ord. (No. 108) November 19, 1996 A. General cultivation, farming, grazing, nurseries, horticulture, truck farming, sod farming, and wild crop harvesting are permitted uses if steep slopes or shore impact zones are maintained in permanent vegetation or operated under an approved conservation plan (Resource Management Systems) consistent with the filed office technical guides of the local soil and water conservation districts or the United States Soil Conservation Service, as provided by a qualified individual or agency, lkn. Management Practices (BMP's) shall be implemented for the use of fertilizers. pesticides. and erosion control. The shore impact zone for parcels with permitted agricultural land uses I equal to line parallel to and 50 feet from the ordinary high water level. B. Animal feedlot must meet the following standards in accordance with peA rules 7020.0100 - 7020.1900: Adopted by the City Council of the City of Andover this.l.21h day of November. 1996. CITY OF ANDOVER ATTEST: ~ tldL Victoria V olk, City Clerk CITY OF ANDOVER COUNTY OF ANOKA STATE OF MINNESOTA ORDINANCE NO. 108 SUMMARY AN ORDINANCE REGULATING AND MANAGING SHORELANDS WITHIN THE CITY OF ANDOVER AND REPEALING ORDINANCE NO. 71 ADOPTED AUGUST 6, 1985. The City Council of the City of Andover does hereby ordain: STATUTORY AUTHORIZATION AND POLICY Statutory Authorization This shoreland ordinance is adopted pursuant to the authorization and policies contained in Minnesota Statutes, Chapter 105, Minnesota Regulations, Parts 6120.2500 - 6120.3900, and the planning and zoning enabling legislation in Minnesota Statutes, Chapter 462. Policy The uncontrolled use of shorelands of the City of Andover, Minnesota affects the public health, safety and general welfare not only by contributing to pollution of public waters, but also by impairing the local tax base. Therefore, it is in the best interests of the public health, safety and welfare to provide for the wise subdivision, use and development of shorelands of public waters. The Legislature of Minnesota has delegated responsibility to local governments of the state to regulate the subdivision, use and development of the shorelands of public waters and thus preserve and enhance the quality of surface waters, conserve the economic and natural environmental values of shorelands, and provide for the wise use of waters and related land resources. This responsibility is hereby recognized by the city of Andover. GENERAL PROVISIONS AND DEFINITIONS Jurisdiction The provisions of this ordinance shall apply to the shorelands of the public water bodies as classified in Section 4.0 of this ordinance. Pursuant to Minnesota Regulations, Parts 6120.2500 - 6120.3900, no lake, pond, or flowage less than 10 acres in size in municipalities or 25 acres in size in unincorporated areas need be regulated in a local government's shoreland regulations. A body of water created by a private user where there was no previous shoreland may, at the discretion of the governing body, be exempt from this ordinance. 1 Compliance The use of any shoreland of public waters; the size and shape of lots; the use, size, type and location of structures on l.ots; the installation and maintenance of water supply and waste treatment systems, the grading and filling of any shoreland area; the cutting of shoreland vegetation; and the subdivision of land shall be in full compliance with the terms of this ordinance and other applicable regulations. Enforcement The zoning Administrator is responsible for the administration and enforcement of this ordinance. Any violation of the provisions of this ordinance or failure to comply with any of its requirements (including violations of conditions and safeguards established in connection with grants of variances or conditional uses) shall constitute a misdemeanor and shall be punishable as defined by law. Violations of this ordinance can occur regardless of whether or not a permit is required for a regulated activity pursuant to this ordinance. Interpretation In their interpretation and application, the provisions of this ordinance shall be held to be minimum requirements and shall be liberally construed in favor of the governing body and shall not be deemed a limitation or repeal of any other powers granted by state statutes. Abrogation and Greater Restrictions It is not intended by this ordinance to repeal, abrogate, or impair any existing easements, covenants, or deed restrictions. However, where this ordinance imposes greater restrictions, the provisions of this ordinance shall prevail. All other ordinances inconsistent with this ordinance are hereby repealed to the extent of the inconsistency only. A printed copy of this Ordinance is available for inspection by any person during regular office hours of the city Clerk and at the Andover Branch of the Anoka County Library 2