DESIGNATIONS
For the purposes of this ordinance, the following zones are created to be applied as necessary to regulate the development of land in the City of Mendon, Utah.
Table 3. Directory of Land Use Notations
| Residential Land Uses | |
| R-1 | Residential District |
| R-2 | Residential |
| P-1 | Public |
| S-1 | Sensitive Areas |
| RA | Residential/Agricultural |
| RC | Residential/Commercial |
| OS | Open Spaces |
| Agricultural Land Uses | |
| A-1 | Agricultural 2.5 acres to 5 acres |
| A-2 | Agricultural from 5 Acres to 10 acres |
| A-3 | Agricultural 10 Acres or more |
| Commercial and Light Industrial Land Uses | |
| C-1 | Commercial/Light Industrial L-I |
| L-1 | Light Manufacturing |
Notes:
(1) Open spaces shall be allowed and encouraged in all zones
(2) A-3 areas are generally located west of the canal or above an elevation of four thousand five hundred and ninety (4590) feet
The boundaries of each of the said districts are hereby established as shown on the map entitled "Zoning Map of the City of Mendon, Utah," or as hereafter amended, which map is attached and all boundaries, notations and other data shown thereon are made by this reference as much a part of this ordinance as if fully described and detailed herein.
Where uncertainty exists as to the boundary of any district, the following rules shall apply:
A. PURPOSE. To provide appropriate locations where low-density residential neighborhoods may be established, maintained and protected. The regulations also permit the establishment of, with proper controls, the public and semi-public uses such as churches, schools, libraries, parks, and playgrounds, which serve the requirements of families. The regulations are intended to prohibit those uses that would be harmful to a single-family neighborhood. Mendon City requires a minimum lot size of five-eights (5/8 = .625 acres) with a minimum lot width of one hundred and ten (110) feet and no more than fourteen (14) lots/dwellings per ten (10) contiguous acres block. Mendon City encourages mixed lot sizes to achieve the average density requirement. "Lot - Block Layout Plan" presents permissible lot configurations. See appendix C. B. PERMITTED USES. The permitted uses are as follows: 1. Single-family dwelling, detached structures 2. Household pets; home occupations 3. Family Food Production in R-1 or Limited Family Food Production in all districts 4. Accessory uses and buildings 5. Agriculture 6. Accessory Dwelling C. CONDITIONAL USES. The conditional uses are as follows: 1. Churches, except temporary revival tents or buildings 2. Libraries, museums, and art galleries 3. Public schools 4. Public parks, public buildings 5. Accessory uses and building customarily incidental to the above uses 6. Residential facilities for elderly persons 7. Accessory dwelling 8. Private park or camping area for temporary recreation D. HEIGHT REGULATIONS. No main building shall be erected to a height greater than thirty five (35) feet or two and one-half (2 1/2) stories, whichever is greater, and no accessory building shall be erected to a height greater than twenty four (24) feet. E. AREA REQUIREMENTS AND FRONTAGE REGULATIONS Table 4. District Requirements
| District Minimum | Area Minimum | Lot Width |
| R-1 | 5/8 Acre (27,225 sq. ft.) | 110 feet |
The lot width shall be measured at thirty (30) feet back from the front lot line.
F. SIDE YARD REGULATION. The minimum side yard for any building shall be ten (10) feet. However, accessory buildings may have a minimum side yard of five (5) feet. For corner lots, the side yard on the side facing the street shall be the same as the front yard.
G. FRONT YARD REGULATIONS. The minimum setback for main buildings shall be thirty (30) feet. The minimum setback for accessory buildings shall be at least five (5) feet behind the front of the main structure except for private garages. If a private garage is closer than ten (10) feet to the house, the garage shall have the same set-back requirements as the building.
H. REAR YARD REGULATIONS. The minimum rear yard for any main building or accessory dwelling shall be thirty (30) feet, and for accessory buildings five (5) feet.
I. DENSITY & LAYOUT. In order to maintain the residential density of Mendon proper, and to promote a mixture of lot sizes, no more than fourteen (14) dwellings are allowed per any given ten (10) contiguous acres in the R-1 zone, less roads, regardless of minimum lot size. New development in the R-1 zone shall follow, as much as possible, the layout of Mendon proper. This includes, but is not limited to the following: a mix of five-eights (5/8) minimum acre lots and larger, and straight North-South and East-West streets which align with existing Mendon City streets which are bordered by swales for stormwater control, where required.
J. SPECIAL PROVISIONS. Quality and appearance of new buildings and landscapes shall be such as to meet or exceed the average quality and appearance or buildings and landscaping placed in the zone during the preceding five (5) years.
K. ACCESSORY STRUCTURE STANDARDS. The accessory structure standards are as follows:
1. A dwelling shall be present on the subject property
2. The accessory structure shall not be used as an additional dwelling, except as provided for by the accessory dwelling provisions of MZC 3
3. The structure shall not be used for commercial or industrial purposes except as provided for under “Level Two Home Occupations” (MZC 3.36 Part D,4)
4. Accessory structures shall be located at least five (5) feet behind front line of the main structure and not be located in any required yard or on any publicly dedicated easement
5. An accessory structure located in the rear yard shall not exceed a height of twenty-four (24) feet. Height shall be measured from the highest point of the roof to the ground. Basement shall not be considered in the height unless the basement is above grade and then only the portion that is above grade will be counted. If the basement is walk-out, half the basement height shall be considered unless all four corners of the structure are covered with earth/stone.
Figure 2. Accessory Requirements for Single Family Residential Lot

Note: modify drawing for accessory building 5 feet minimum behind front line of main building
A. PURPOSE. To provide appropriate locations for multiple family dwellings, the regulations permit a variety of necessary public services and activities. Certain retail and service activities which are in harmony with the intent of the regulations are allowed, subject to control. Multiple family dwellings shall be limited to one (1) unit per 10-acre block at the corner lots only. A duplex will be allowed on five eights (5/8) acre, a three plex on 1 acre, and a maximum of (1) fourplex on a one and one-quarter (1 1/4) acre lot. (reference appendix C Lot - Block Layout Plan.) Bear River Health Authority may impose additional land requirements for any dwelling size beyond a single family unit. Their requirements will take precedence. B. PERMITTED USES. The permitted uses are as follows: 1. Single-family dwelling, attached or detached 2. Multi-family dwelling 3. Home occupations 4. Accessory dwellings. 5. Accessory uses and buildings 6. Agriculture 7. Residential facilities for elderly person C. CONDITIONAL USES. The conditional uses are as follows: 1. Private educational institutions having a curriculum like is ordinarily given in public schools; colleges and universities; child day care or nursery 2. Accessory uses and buildings customarily incidental to the above 3. Museum 4. Church, except temporary revival tent or buildings 5. Club, Lodges, Social Halls 6. Hospital (not including animal hospital) 7. Public Library 8. Public buildings 9. Public park or playground 10. Public Utilities 11. School D. HEIGHT REGULATIONS. Dwellings/Main Buildings shall be erected to a height no greater than two and one-half (2 1/2) stories or thirty-five (35) feet. E. AREA REGULATIONS. The minimum lot area shall be not less than five-eighth (5/8) acre (27,225 square feet) feet for a single family residence. For developments utilizing a shared septic system (upon approval of the Health Authority), the minimum land area per dwelling unit shall be four thousand (27,225) square feet (⅝) for a single family home, single family home with accessory dwelling or duplex. One acre (43,560 square feet) for a triplex and 1.25 acre (54,450 square feet) for a four-plex. Adaptions to these area calculations may be necessitated for septic requirements per Bear River Health Authority and those requirements will take precedence. F. FRONTAGE REGULATIONS. The minimum width of any lot for a main building shall be eighty 110 feet at a point thirty (30) feet back from the front lot line. G. SIDE YARD REGULATIONS. The minimum side yard for any building shall be ten (10) feet. Accessory buildings shall have a side yard of at least five (5) feet. Side yards on a corner lot shall be the same as a front yard on the side facing the street. H. FRONT YARD REGULATIONS. The minimum front yard shall be thirty (30) feet from the property line to the house or other main building. I. REAR YARD REGULATIONS. A minimum of thirty (30) feet is required for any main building or accessory dwelling, and five (5) feet for accessory buildings. On corner lots which rear upon the side yard of another lot, accessory buildings shall be located no closer than five (5) feet to such side yard. J. GROUP DWELLINGS. These buildings shall be considered as one building for the purpose of front, side, and rear yard requirements. The entire group, as a unit, requires one front, one rear and two side yards as specified for single dwelling structures. Group dwellings shall be not be more than two and one-half (2 1/2) stories or thirty-five (35) feet in height. Each two and one-half (2 1/2) story group dwelling development shall have a minimum court of thirty (30) feet in width and forty (40) feet in length, in addition to its required yards. Each one-story group dwelling development shall have a minimum court of twenty (20) feet in width and thirty (30) feet in length in addition to its required yards. In a group dwelling development, no two separate dwelling structures shall be closer to each other than ten (10) feet along the sides or ends of a court.
| District | Area Minimum | Lot Width |
| A-1 | 2.5 Acres (108,900 sq. ft) | 330 feet |
| A-2 | 5 Acres (217,000 sq. ft) | 330 feet |
| A-3 | 10 Acres (434,000 sq.-ft.) | 330 feet |
A. PURPOSE. To provide areas where industries necessary and beneficial to the local economy may locate and operate. The regulations of the zone are designed to protect and preserve the environment of the zone, the adjacent areas, and the entire community. It is the full intention of the City Council and the Planning and Zoning Commission for locations and uses granted in the Light Industrial Zone L-1 to be free from objection by the majority of residents of the community. B. PERMITTED USES. The permitted uses are as follows: 1. Automobile, major repair 2. Cabinetry Shop 3. Contractor’s yard or shop 4. Farm, garden, or building supply store 5. Food processing and/or packaging plant 6. Fuel sales facility (convenience store/service station) 7. Laundry or linen supply 8. Manufacturing, light and medium (e.g. machine shops, electronics) 9. Nursery 10. Office building 11. Processing plant for agricultural products 12. Research and development facility 13. School (vocational or trade) 14. Warehouse 15. Storage units C. CONDITIONAL USES. Any use not specifically mentioned under permitted uses which conforms to the general concepts and ideas laid out in Mendon City’s General Plan. D. SPECIAL PROVISIONS. Approval of any construction and plat layout must be obtained from the Planning and Zoning Commission and the City Council before construction is commenced The required yards shall be kept free from refuse, debris, garbage, and waste material. All such refuse, debris, garbage, and waste material shall be kept in approved containers. All uses shall be free from objections because of odor, toxic fumes, dust, smoke, noise, vibration, or other causes. City streets, walks, and utility (electricity, culinary water, secondary water for landscape, and sewer) infrastructure is required to be in place as a part of site approval for building. All access roadways shall be design and certified to bear the intended traffic weight loads and at the frequency for which the facility is designed to move materials in and out. E. HEIGHT REQUIREMENTS. Height requirements in the L-1 zone will be thirty-five (35) feet of the boundary of any adjoining zone, no building shall exceed the height limit established for main buildings in such adjoining zone. F. AREA, WIDTH, AND YARD REGULATIONS. Any parcel in the L-1 zone having a lot line in common with a lot in an adjoining zone, or lying across the street or alley from such adjoining zone, the front, side and rear yards, as prescribed for such adjoining zones, shall be maintained in the L-1 zone.
A. PURPOSE. To provide the maximum in public safety and welfare in the development and design of building sites, roadways, and other service amenities where steepness of slope and length may cause unintended damage to areas below and to preserve and enhance the hillside landscape by encouraging the maximum retention of natural features, such as drainage swales, streams, slopes, ridgelines, crests of hills, rock outcroppings, vistas, and natural formations. Also to reduce the impact of water run-on/run-off impact both due to slope and due to natural build up during heavy rains and high clay content soil. B. APPLICABILITY. These provisions shall apply to any proposed construction, grading, filling, clearing or excavation on any hillside that meets or exceeds a slope of fifteen (15) percent. Trail development which does not exceed five (5) feet in width and does not exceed three (3) feet of cut or three (3) feet of fill shall be exempt from these provisions. C. REQUIREMENTS. Prior to the initiation of any construction, grading, filling, clearing, or excavation within the Hillside Overlay, the applicant shall provide the following, prepared and stamped by a professional engineer registered in the State of Utah, to the City Engineer, for review and approval of lot grading plan. See Above Section 1.15. General Requirements: 1. The lot grading plan must be prepared by a civil engineer or land surveyor certified in Utah. 2. The building shall be located or the building site graded so that water will not accumulate at or near the building and will not adversely affect adjacent properties. 3. Artificial embankments and/or retaining walls shall not be allowed unless approved as part of the Building Permit. The maximum embankment slope shall be 3:1 (horizontal to vertical). 4. Existing overland drainage is to be maintained. 5. Proposed improvements within 10’ of the property line shall make assurances that runoff is not directed towards adjacent properties. 6. A minimum slope of two percent (2%) shall be maintained away from the home for drainage purposes. 7. Bare soil areas and soil stockpiles shall be stabilized as soon as practical when the area is inactive or has reached finished grade. 8. Sedimentation/siltation control measures shall be installed prior to construction and offset at a minimum of two feet (2’) from lot lines. 9. Hand-drawn sketches or photographs will not be accepted. Lot Grading Plan Details: 1. Show lot address, entire property line including driveway and street name clearly labeled. If property is on a corner, both street names are to be labeled. 2. Show proposed building envelope or footprint of the proposed home. 3. Show setbacks from all property lines and any existing and/or proposed easements. 4. Show proposed and existing grades and directional slopes with percentage of slope. 5. Show all existing trees showing base diameter. Identify any trees to be removed or affected within area of construction (dripline). 6. Show driveway location, width, culverts, and any changes proposed within the right-of-way. State type of driveway (asphalt, gravel, etc.). 7. Show all existing and proposed retaining walls including height, setback and top & bottom elevations (if applicable). Please note: any retaining wall over four feet (4’) in height must be certified by a Professional Engineer in the State of Utah. 8. Relative elevations are permitted with a benchmark for such elevations identified on the plan. 9. Mendon City limits building on lots at or over 15% grade based on Engineer’s recommendations. Per county restrictions, lots at or over 20% grade may not be built on. D. FINDINGS. Prior to issuance of a permit for construction within the Hillside Overlay District, and based upon the above noted reports, the City Engineer shall determine the following: 1. The site is physically suitable for the design and siting of the proposed development. The development shall result in minimum disturbance of hillside areas. 2. The grading and excavation proposed in connection with the development shall not result in soil erosion, silting of lower slopes, slide damage, flooding, severe scarring, any other geological instability, or fire hazard which would adversely affect the public, health, safety, and welfare. 3. Disruption of existing native vegetation and wildlife habitat is minimized.
DESIGNATIONS
For the purposes of this ordinance, the following zones are created to be applied as necessary to regulate the development of land in the City of Mendon, Utah.
Table 3. Directory of Land Use Notations
| Residential Land Uses | |
| R-1 | Residential District |
| R-2 | Residential |
| P-1 | Public |
| S-1 | Sensitive Areas |
| RA | Residential/Agricultural |
| RC | Residential/Commercial |
| OS | Open Spaces |
| Agricultural Land Uses | |
| A-1 | Agricultural 2.5 acres to 5 acres |
| A-2 | Agricultural from 5 Acres to 10 acres |
| A-3 | Agricultural 10 Acres or more |
| Commercial and Light Industrial Land Uses | |
| C-1 | Commercial/Light Industrial L-I |
| L-1 | Light Manufacturing |
Notes:
(1) Open spaces shall be allowed and encouraged in all zones
(2) A-3 areas are generally located west of the canal or above an elevation of four thousand five hundred and ninety (4590) feet
The boundaries of each of the said districts are hereby established as shown on the map entitled "Zoning Map of the City of Mendon, Utah," or as hereafter amended, which map is attached and all boundaries, notations and other data shown thereon are made by this reference as much a part of this ordinance as if fully described and detailed herein.
Where uncertainty exists as to the boundary of any district, the following rules shall apply:
A. PURPOSE. To provide appropriate locations where low-density residential neighborhoods may be established, maintained and protected. The regulations also permit the establishment of, with proper controls, the public and semi-public uses such as churches, schools, libraries, parks, and playgrounds, which serve the requirements of families. The regulations are intended to prohibit those uses that would be harmful to a single-family neighborhood. Mendon City requires a minimum lot size of five-eights (5/8 = .625 acres) with a minimum lot width of one hundred and ten (110) feet and no more than fourteen (14) lots/dwellings per ten (10) contiguous acres block. Mendon City encourages mixed lot sizes to achieve the average density requirement. "Lot - Block Layout Plan" presents permissible lot configurations. See appendix C. B. PERMITTED USES. The permitted uses are as follows: 1. Single-family dwelling, detached structures 2. Household pets; home occupations 3. Family Food Production in R-1 or Limited Family Food Production in all districts 4. Accessory uses and buildings 5. Agriculture 6. Accessory Dwelling C. CONDITIONAL USES. The conditional uses are as follows: 1. Churches, except temporary revival tents or buildings 2. Libraries, museums, and art galleries 3. Public schools 4. Public parks, public buildings 5. Accessory uses and building customarily incidental to the above uses 6. Residential facilities for elderly persons 7. Accessory dwelling 8. Private park or camping area for temporary recreation D. HEIGHT REGULATIONS. No main building shall be erected to a height greater than thirty five (35) feet or two and one-half (2 1/2) stories, whichever is greater, and no accessory building shall be erected to a height greater than twenty four (24) feet. E. AREA REQUIREMENTS AND FRONTAGE REGULATIONS Table 4. District Requirements
| District Minimum | Area Minimum | Lot Width |
| R-1 | 5/8 Acre (27,225 sq. ft.) | 110 feet |
The lot width shall be measured at thirty (30) feet back from the front lot line.
F. SIDE YARD REGULATION. The minimum side yard for any building shall be ten (10) feet. However, accessory buildings may have a minimum side yard of five (5) feet. For corner lots, the side yard on the side facing the street shall be the same as the front yard.
G. FRONT YARD REGULATIONS. The minimum setback for main buildings shall be thirty (30) feet. The minimum setback for accessory buildings shall be at least five (5) feet behind the front of the main structure except for private garages. If a private garage is closer than ten (10) feet to the house, the garage shall have the same set-back requirements as the building.
H. REAR YARD REGULATIONS. The minimum rear yard for any main building or accessory dwelling shall be thirty (30) feet, and for accessory buildings five (5) feet.
I. DENSITY & LAYOUT. In order to maintain the residential density of Mendon proper, and to promote a mixture of lot sizes, no more than fourteen (14) dwellings are allowed per any given ten (10) contiguous acres in the R-1 zone, less roads, regardless of minimum lot size. New development in the R-1 zone shall follow, as much as possible, the layout of Mendon proper. This includes, but is not limited to the following: a mix of five-eights (5/8) minimum acre lots and larger, and straight North-South and East-West streets which align with existing Mendon City streets which are bordered by swales for stormwater control, where required.
J. SPECIAL PROVISIONS. Quality and appearance of new buildings and landscapes shall be such as to meet or exceed the average quality and appearance or buildings and landscaping placed in the zone during the preceding five (5) years.
K. ACCESSORY STRUCTURE STANDARDS. The accessory structure standards are as follows:
1. A dwelling shall be present on the subject property
2. The accessory structure shall not be used as an additional dwelling, except as provided for by the accessory dwelling provisions of MZC 3
3. The structure shall not be used for commercial or industrial purposes except as provided for under “Level Two Home Occupations” (MZC 3.36 Part D,4)
4. Accessory structures shall be located at least five (5) feet behind front line of the main structure and not be located in any required yard or on any publicly dedicated easement
5. An accessory structure located in the rear yard shall not exceed a height of twenty-four (24) feet. Height shall be measured from the highest point of the roof to the ground. Basement shall not be considered in the height unless the basement is above grade and then only the portion that is above grade will be counted. If the basement is walk-out, half the basement height shall be considered unless all four corners of the structure are covered with earth/stone.
Figure 2. Accessory Requirements for Single Family Residential Lot

Note: modify drawing for accessory building 5 feet minimum behind front line of main building
A. PURPOSE. To provide appropriate locations for multiple family dwellings, the regulations permit a variety of necessary public services and activities. Certain retail and service activities which are in harmony with the intent of the regulations are allowed, subject to control. Multiple family dwellings shall be limited to one (1) unit per 10-acre block at the corner lots only. A duplex will be allowed on five eights (5/8) acre, a three plex on 1 acre, and a maximum of (1) fourplex on a one and one-quarter (1 1/4) acre lot. (reference appendix C Lot - Block Layout Plan.) Bear River Health Authority may impose additional land requirements for any dwelling size beyond a single family unit. Their requirements will take precedence. B. PERMITTED USES. The permitted uses are as follows: 1. Single-family dwelling, attached or detached 2. Multi-family dwelling 3. Home occupations 4. Accessory dwellings. 5. Accessory uses and buildings 6. Agriculture 7. Residential facilities for elderly person C. CONDITIONAL USES. The conditional uses are as follows: 1. Private educational institutions having a curriculum like is ordinarily given in public schools; colleges and universities; child day care or nursery 2. Accessory uses and buildings customarily incidental to the above 3. Museum 4. Church, except temporary revival tent or buildings 5. Club, Lodges, Social Halls 6. Hospital (not including animal hospital) 7. Public Library 8. Public buildings 9. Public park or playground 10. Public Utilities 11. School D. HEIGHT REGULATIONS. Dwellings/Main Buildings shall be erected to a height no greater than two and one-half (2 1/2) stories or thirty-five (35) feet. E. AREA REGULATIONS. The minimum lot area shall be not less than five-eighth (5/8) acre (27,225 square feet) feet for a single family residence. For developments utilizing a shared septic system (upon approval of the Health Authority), the minimum land area per dwelling unit shall be four thousand (27,225) square feet (⅝) for a single family home, single family home with accessory dwelling or duplex. One acre (43,560 square feet) for a triplex and 1.25 acre (54,450 square feet) for a four-plex. Adaptions to these area calculations may be necessitated for septic requirements per Bear River Health Authority and those requirements will take precedence. F. FRONTAGE REGULATIONS. The minimum width of any lot for a main building shall be eighty 110 feet at a point thirty (30) feet back from the front lot line. G. SIDE YARD REGULATIONS. The minimum side yard for any building shall be ten (10) feet. Accessory buildings shall have a side yard of at least five (5) feet. Side yards on a corner lot shall be the same as a front yard on the side facing the street. H. FRONT YARD REGULATIONS. The minimum front yard shall be thirty (30) feet from the property line to the house or other main building. I. REAR YARD REGULATIONS. A minimum of thirty (30) feet is required for any main building or accessory dwelling, and five (5) feet for accessory buildings. On corner lots which rear upon the side yard of another lot, accessory buildings shall be located no closer than five (5) feet to such side yard. J. GROUP DWELLINGS. These buildings shall be considered as one building for the purpose of front, side, and rear yard requirements. The entire group, as a unit, requires one front, one rear and two side yards as specified for single dwelling structures. Group dwellings shall be not be more than two and one-half (2 1/2) stories or thirty-five (35) feet in height. Each two and one-half (2 1/2) story group dwelling development shall have a minimum court of thirty (30) feet in width and forty (40) feet in length, in addition to its required yards. Each one-story group dwelling development shall have a minimum court of twenty (20) feet in width and thirty (30) feet in length in addition to its required yards. In a group dwelling development, no two separate dwelling structures shall be closer to each other than ten (10) feet along the sides or ends of a court.
| District | Area Minimum | Lot Width |
| A-1 | 2.5 Acres (108,900 sq. ft) | 330 feet |
| A-2 | 5 Acres (217,000 sq. ft) | 330 feet |
| A-3 | 10 Acres (434,000 sq.-ft.) | 330 feet |
A. PURPOSE. To provide areas where industries necessary and beneficial to the local economy may locate and operate. The regulations of the zone are designed to protect and preserve the environment of the zone, the adjacent areas, and the entire community. It is the full intention of the City Council and the Planning and Zoning Commission for locations and uses granted in the Light Industrial Zone L-1 to be free from objection by the majority of residents of the community. B. PERMITTED USES. The permitted uses are as follows: 1. Automobile, major repair 2. Cabinetry Shop 3. Contractor’s yard or shop 4. Farm, garden, or building supply store 5. Food processing and/or packaging plant 6. Fuel sales facility (convenience store/service station) 7. Laundry or linen supply 8. Manufacturing, light and medium (e.g. machine shops, electronics) 9. Nursery 10. Office building 11. Processing plant for agricultural products 12. Research and development facility 13. School (vocational or trade) 14. Warehouse 15. Storage units C. CONDITIONAL USES. Any use not specifically mentioned under permitted uses which conforms to the general concepts and ideas laid out in Mendon City’s General Plan. D. SPECIAL PROVISIONS. Approval of any construction and plat layout must be obtained from the Planning and Zoning Commission and the City Council before construction is commenced The required yards shall be kept free from refuse, debris, garbage, and waste material. All such refuse, debris, garbage, and waste material shall be kept in approved containers. All uses shall be free from objections because of odor, toxic fumes, dust, smoke, noise, vibration, or other causes. City streets, walks, and utility (electricity, culinary water, secondary water for landscape, and sewer) infrastructure is required to be in place as a part of site approval for building. All access roadways shall be design and certified to bear the intended traffic weight loads and at the frequency for which the facility is designed to move materials in and out. E. HEIGHT REQUIREMENTS. Height requirements in the L-1 zone will be thirty-five (35) feet of the boundary of any adjoining zone, no building shall exceed the height limit established for main buildings in such adjoining zone. F. AREA, WIDTH, AND YARD REGULATIONS. Any parcel in the L-1 zone having a lot line in common with a lot in an adjoining zone, or lying across the street or alley from such adjoining zone, the front, side and rear yards, as prescribed for such adjoining zones, shall be maintained in the L-1 zone.
A. PURPOSE. To provide the maximum in public safety and welfare in the development and design of building sites, roadways, and other service amenities where steepness of slope and length may cause unintended damage to areas below and to preserve and enhance the hillside landscape by encouraging the maximum retention of natural features, such as drainage swales, streams, slopes, ridgelines, crests of hills, rock outcroppings, vistas, and natural formations. Also to reduce the impact of water run-on/run-off impact both due to slope and due to natural build up during heavy rains and high clay content soil. B. APPLICABILITY. These provisions shall apply to any proposed construction, grading, filling, clearing or excavation on any hillside that meets or exceeds a slope of fifteen (15) percent. Trail development which does not exceed five (5) feet in width and does not exceed three (3) feet of cut or three (3) feet of fill shall be exempt from these provisions. C. REQUIREMENTS. Prior to the initiation of any construction, grading, filling, clearing, or excavation within the Hillside Overlay, the applicant shall provide the following, prepared and stamped by a professional engineer registered in the State of Utah, to the City Engineer, for review and approval of lot grading plan. See Above Section 1.15. General Requirements: 1. The lot grading plan must be prepared by a civil engineer or land surveyor certified in Utah. 2. The building shall be located or the building site graded so that water will not accumulate at or near the building and will not adversely affect adjacent properties. 3. Artificial embankments and/or retaining walls shall not be allowed unless approved as part of the Building Permit. The maximum embankment slope shall be 3:1 (horizontal to vertical). 4. Existing overland drainage is to be maintained. 5. Proposed improvements within 10’ of the property line shall make assurances that runoff is not directed towards adjacent properties. 6. A minimum slope of two percent (2%) shall be maintained away from the home for drainage purposes. 7. Bare soil areas and soil stockpiles shall be stabilized as soon as practical when the area is inactive or has reached finished grade. 8. Sedimentation/siltation control measures shall be installed prior to construction and offset at a minimum of two feet (2’) from lot lines. 9. Hand-drawn sketches or photographs will not be accepted. Lot Grading Plan Details: 1. Show lot address, entire property line including driveway and street name clearly labeled. If property is on a corner, both street names are to be labeled. 2. Show proposed building envelope or footprint of the proposed home. 3. Show setbacks from all property lines and any existing and/or proposed easements. 4. Show proposed and existing grades and directional slopes with percentage of slope. 5. Show all existing trees showing base diameter. Identify any trees to be removed or affected within area of construction (dripline). 6. Show driveway location, width, culverts, and any changes proposed within the right-of-way. State type of driveway (asphalt, gravel, etc.). 7. Show all existing and proposed retaining walls including height, setback and top & bottom elevations (if applicable). Please note: any retaining wall over four feet (4’) in height must be certified by a Professional Engineer in the State of Utah. 8. Relative elevations are permitted with a benchmark for such elevations identified on the plan. 9. Mendon City limits building on lots at or over 15% grade based on Engineer’s recommendations. Per county restrictions, lots at or over 20% grade may not be built on. D. FINDINGS. Prior to issuance of a permit for construction within the Hillside Overlay District, and based upon the above noted reports, the City Engineer shall determine the following: 1. The site is physically suitable for the design and siting of the proposed development. The development shall result in minimum disturbance of hillside areas. 2. The grading and excavation proposed in connection with the development shall not result in soil erosion, silting of lower slopes, slide damage, flooding, severe scarring, any other geological instability, or fire hazard which would adversely affect the public, health, safety, and welfare. 3. Disruption of existing native vegetation and wildlife habitat is minimized.