HomeMy WebLinkAbout10-03-2012 Planning Commission Work Session ,4 ‘ )_--- . Al ' -)--- L -VJ_____
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ORONO PLANNING COMMISSION
WORK SESSION
Wednesday, October 3, 2012 at 5:30 pm
2780 Kelley Parkway— Council Chambers
AGENDA
NEW BUSINESS
1. October Legal Notice: Overview (attached)
2. Hardcover: Review newly adopted regulations (attached)
3. Photos from PC Boat Tour (handout)
ADJOURNMENT (7:00 p.m.)
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CITY OF ORONO
2750 Kelley Parkway, P.O. Box 66
Crystal Bay, MN 55323
Phone (952) 249-4600 Fax (952) 249-4616
NOTICE
The Orono Planning Commission will hold a public hearing in the Orono Council Chambers at
2780 Kelley Parkway on Monday, October 15, 2012, beginning at 6:30 p.m. on the matter of
reviewing the following land use applications and vacation request:
12-3570 Nancy & Brent Bordson, 760 Tonkawa Road, LR-1B zoning district, request lot area
and lot width variances in order to construct a new residence. The subject property
has 117 feet in width at the OHWL and 110 feet at the 75-foot setback and is 0.54 in
area where 140 feet in width and 1.0 acre in area are required.
12-3578 Dennis & Deborah Krump, 25 Stubbs Bay Road North, RR-1A zoning district,
request a side yard setback variance in order to construct a garage addition to the
home set back 29 feet from the side lot line where a 50 foot setback is normally
required.
12-3579 John Lein, 2700 Sixth Avenue North, RR-1B zoning district, requests preliminary
plat approval in order to create four new, two-acre lots served by private well and
septic; a new private road will also be created.
All persons wishing to be heard are encouraged to attend these meetings. This is not a final
agenda and is subject to change prior to the hearings. Written comments are accepted and
should be submitted to the City of Orono by October 9, 2012 if possible. Interested persons
may review the applications at City offices. For an appointment, please call (952) 249-4620.
City of Orono
By: Planning Commission
Melanie Curtis
Planning &Zoning Coordinator
To be published in The Laker & The Pioneer Newspapers on September 29, 2012.
Posted at: Orono City Offices
Crystal Bay Post Office
Long Lake Post Office
Navarre Post Office
r
ORDINANCE NO. 94 , THIRD SERIES
CITY OF ORONO
HENNEPIN COUNTY, MINNESOTA
AN ORDINANCE AMENDING REGULATIONS GOVERNING THE
REGULATION OF HARDCOVER AND ESTABLISHING THE STORMWATER
QUALITY OVERLAY DISTRICT
Section 1. The City Council of the City of Orono hereby amends City Code Chapter
78,Article I. In General, Section 78-1 as follows:
All existing definitions in Section 78-1 are restated and incorporated herein unchanged with
the following definitions to be added in alphabetical order with the existing definitions:
Building Footprint means the outline of the total area covered by a building's
perimeter at the ground level (to the block/foundation).
(1) Carports, covered porches and other similar building features which have no
exterior walls shall be included as part of a building footprint by drawing a
straight line between the outer edges of all support structures(and the main
building if applicable).
(2) The outer edge of building protrusions,bay windows or other similar
features that extend outward from a building and are less than four feet from
the ground shall be considered as part of the building footprint.
Hardcover means a hard surface that prevents or retards entry of water into the
soil and causes water to run off the surface in greater quantities and at an increased
rate of flow than prior to development. Hardcover shall include but not be limited to
the following: all building footprints, driveways, sidewalks, stepping stones, retaining
walls, patios, courts (sport, tennis, etc), decks,pools, areas used for the extended
outdoor storage of vehicles or equipment, and all other similar features or surfaces as
determined by the City Engineer or City Planner.
Lot Coverage means the total square footage of all building footprints and
structures on a parcel.
Permeable Lining (landscaping fabric) means a porous material used for weed
prevention that allows storm water to permeate into the ground.
Page 1 of 17
Pervious Paver means concrete, asphalt or similar blocks with holes of some kind
that allow water to go through the surface into a specialized aggregate base—
consistent of an open-graded aggregate—and into the soils below.
Pervious Surface means naturally occurring groundcover or a variety of types of
pavement,pavers and other devices that provide stormwater infiltration while serving
as a structural surface.
Section 2. The City Council of the City of Orono hereby amends City Code Chapter
78, Article IV. District Regulations, Division 11. RPUD Residential Planned Unit
Development District, Section 78-626 as follows:
Preamble language and current subsections(1)through(5) are restated and incorporated
herein unchanged.
(6) Site CoverageFloor Area Ratio. Hardsurface coverages and floor Floor area ratios
(FAR's) shall be limited per the following table:
-. - Maximum Floor
Comprehensive Plan Designation Coverage % Area Ratio*
Low or medium density residential (up 50 0.5
to 50 and including 6.0 units per acre)
High density residential (in excess of 1.0
6.0 units per acre)
*FAR=Total Building Floor Area/Total Lot Area
Individual lots within a development in the RPUD district may exceed these standards
as long as the average meets these standards.
Current subsections(7)through(13) are restated and incorporated herein unchanged.
(14) Landscaping, screening and buffering
Current subsection(a)is restated and incorporated herein unchanged.
(b) Minimum landscaping requirements.
Current subsections (1.)through(3.) are restated and incorporated herein
unchanged.
4. All site areas not covered by buildings, sidewalks, parking lots,
driveways, trails,patios, or similar -. : . . - - . : hardcover shall
be covered with sod or an equivalent ground cover approved by the city.
This requirement shall not apply to site areas retained in a natural state.
Ptict 2 ofI-
Current subsections (5.)through(6.) are restated and incorporated herein
unchanged.
Current subsections (c)through(g) are restated and incorporated herein
unchanged.
Current subsections (15) through(21) are restated and incorporated herein unchanged.
Section 3. The City Council of the City of Orono hereby amends City Code Chapter
78,Article IV. District Regulations, Division 17. B-6 Highway Commercial District,
Section 78-797 as follows:
Preamble language and current subsections(1)through(7)are restated and incorporated
herein unchanged.
(8) Landscaping:
Current subsection(a)is restated and incorporated herein unchanged.
(b) Minimum landscaping requirements.
Current preamble language and subsections(1.)through(2.) are restated and
incorporated herein unchanged.
3. All site areas not covered by buildings, sidewalks,parking lots,
driveways,patios, or similar hardsurfacc hardcover materials shall be
covered with sod or an equivalent ground cover approved by the city.
This requirement shall not apply to site areas retained in a natural state.
Current subsections(4.)through(5.) are restated and incorporated herein
unchanged.
Current subsections (c)through(g) are restated and incorporated herein
unchanged.
Current subsection(9)is restated and incorporated herein unchanged.
I'ctQc ; of
Section 4. The City Council of the City of Orono hereby amends City Code Chapter
78, Article IV. District Regulations, Division 18. I Industrial District, Section 78-825
as follows:
(a)Minimum lot requirements: 40,000 square feet.
th1 Minimum building area: 10,000 square feet.
(c)Lot width: 200 feet.
(d)Building setbacks (principal and accessory):
(1)Front yard setback: 35 feet.
( Side yard setback, abutting a major street 1: 35 feet.
(3) Side yard setback, abutting a minor street 2: 20 feet.
(4) Side yard setback, interior: 10 feet.
(5)Rear yard setback: 20 feet.
I This setback applies to side yards adjacent to Wayzata Boulevard and Old Crystal
Bay Road.
2 This setback applies to side yards adjacent to all other roads,public or private,
within the "I", Industrial District.
(e) Building height:No structure or building shall exceed three stories and shall not exceed
40 feet in height except as provided in section 78-1366.
(1) Lot coverage: Not more than 35 percent of parcels of three acres or less may be covered
by buildings or structures.
Not more than 45 percent of parcels may be covered by buildings or other structures;
except that when the total building floor area on a site is contained within a single
building, and when the total area used for loading terminals,docks and berths is
completely enclosed within the same single building, a lot coverage of not more than 60
percent will be permitted.
In no case shall impervious surfaces exceed a maximum of 85 percent on any individual
1'cr >c 4011.-
Section 5. The City Council of the City of Orono hereby amends City Code Chapter
78, Article IX. Shoreland Management, Division 1. Generally, Section 78-1211 as
follows:
All existing definitions in Section 78-1211 are restated and incorporated herein unchanged
with the following exception:
Hardcover means any material that interferes to any degree with the direct
.. • - - • -; - , _ . - . .. . -- . ., .-, •- ..
sidewalks,ramps, etc.; any surface intended to be driven on; landscape beds lined with
that prevents direct absorption of rainfall into the ground and that is stored for an
extended period of time.
Section 6. The City Council of the City of Orono hereby amends City Code Chapter
78, Article IX. Shoreland Management, Division 3. Shoreland Overlay District
Standards, Section 78-1288 as follows:
Section 78-1288 is hereby deleted in its entirety.
Section 78-1288.—Hardcover limitations
Hardcover on all lots within the Shoreland Overlay District shall comply with the
requirements of Article XIII: Stormwater Quality Overlay District.
Section 7. The City Council of the City of Orono hereby amends City Code Chapter
78,Article IX. Shoreland Management, Division 3. Shoreland Overlay District
Standards, Section 78-1329 as follows:
Preamble language and current subsection(1)is restated and incorporated herein
unchanged.
(2) Be designed and constructed to effectively manage reasonably expected quantities
and qualities of stormwater runoff. Impervious surface coverage within any tier
must not exceed 25 percent of the tier area, except that credit for unused hard
cover allowance in tiers near the lake may be used in tiers further from the lake.
1'aQ-c of 1.'
Section 8. The City Council of the City of Orono hereby amends City Code Chapter
78,Article XI. Wetlands Protection, Division 1. Generally, Section 78-1601 as
follows:
Current subsections (a)through(b) are restated and incorporated herein unchanged.
The current preamble to subsection(c)is restated and incorporated herein unchanged.
Subdivisions(1)through(3) are restated and incorporated herein unchanged.
(4) When any construction or land alteration activity that does not fall within the
meaning of'redevelopment'has the potential to adversely impact a wetland.
For purposes of this section, "the potential to adversely impact a wetland" exists
when all of the following three conditions exist:
a. The portion of the property disturbed by construction or land alteration
activity drains to the wetland; and
b. The amount of grading exceeds 50 cubic yards or the construction activity
involves the disturbance of more than 5,000 square feet of area; and
c. The redevelopment activity results in a net increase in the square footage
of•--:- ':. . . . : .'- hardcover that drains to the wetland, or
results in the relocation of impees hardcover closer to the
wetland, or results in changes to drainage patterns (slopes,meander
patterns, etc)that the city engineer determines will increase the velocity or
rate of runoff to the wetland.
For new development, all wetlands on the property shall be subject to the buffer
requirements. For redevelopment or other grading or construction situations that
are not new development,only the wetland that is potentially adversely impacted
shall be subject to the buffer requirement. In the event that the wetland is on an
adjacent property but near enough to the subject property so that buffers to said
wetland would extend into the subject property, the buffer requirements apply.
Section 9. The City Council of the City of Orono hereby amends City Code Chapter
78, Article XII. Conservation Design, Division 1. Generally, Section 78-1633 as
follows:
All existing definitions in Section 78-1633 are restated and incorporated herein
unchanged with the following exception:
Pcwc6of �'
Minnesota Land Cover Classification System (MLCCS)means the Minnesota Land
Cover Classification System (MLCCS)displays data on natural/semi-natural and
cultural cover types at the highest level of classification. The next four levels of
classification each reveal further specifications such as plant types, soil hydrology,
impery out aur f ces hardcover and plant species. Using MLCCS data is the first step in
producing a natural resource inventory of a development site.
Section 10. The City Council of the City of Orono hereby amends City Code
Chapter 78, Article XII. Conservation Design, Division 5. Resources, as follows:
Sections 78-1641 —78-1669. Reserved.
Section 11. The City Council of the City of Orono hereby amends City Code
Chapter 78, by creating a new Article XIII. Stormwater Quality Overlay District,
as follows:
ARTICLE XIII. STORMWATER QUALITY OVERLAY DISTRICT
DIVISION 1. IN GENERAL
Sec. 78-1670, Purpose.
The City of Orono recognizes through its comprehensive plan that managing
stormwater runoff is essential for protection of the water quality of Lake Minnetonka, for
preservation of the natural wildlife habitat within marshlands, and for protection against
flooding and flood damage. Accordingly,the City has established this stormwater quality
overlay district to organize regulations deemed necessary to ensure high quality
stormwater runoff throughout the City.
Sec. 78-1671. Adoption of the Stormwater Quality Overlay District Map.
The map entitled City of Orono Stormwater Quality Overlay District Map, dated
September 24, 2012, hereinafter referred to as the "Stormwater Overlay District Map,"
and all explanatory matters thereon, are hereby adopted and made a part of Article XIII.
Stormwater Quality Overlay District.
Sec. 78-1672. District Application.
(a) The provisions of Article XIII shall apply to all parcels within the jurisdiction of
Orono that are shown to be within one of the stormwater quality protection zones
depicted on the Stormwater Overlay District Map.
Page 7 of 17
(b) All parcels within the Stormwater Quality Overlay District shall adhere to both the
general requirements for all overlay district parcels listed in Division 2 as well as
the specific requirements in Division 3 for the stormwater quality protection zone to
which the parcel is assigned.
Sec. 78-1673—78-1679. Reserved.
DIVISION 2. GENERAL REGULATIONS FOR ALL PARCELS WITHIN THE
STORMWATER QUALITY OVERLAY DISTRICT
Sec. 78-1680. Hardcover Restriction Zones.
Within 75 feet of the Ordinary High Water Level (OHWL) of any lake or tributary,
and within any bluff or shore impact zone, no hardcover shall be placed, located or
constructed, except for driveways, stairways, lifts, landings and lockboxes as regulated
by the shoreland overlay district.
Sec. 78-1681. Driveways, in general.
All driveways shall comply with the following minimum dimensional standards:
(1) Driveways serving end loading garages shall maintain a width equivalent to the
width of all overhead doors extending 15 feet out from the garage doors.
(2) Driveways serving side loading garages shall provide a minimum turn around or
back up depth of 20 feet, as measured from the garage door(s).
(3) Minimum driveway taper ratio shall be 2:1.
(4) Driveways shall be at least eight feet in width at the street or private road.
(5) A turnaround shall be provided for a driveway with direct access to an arterial
or collector roadway, or for a side load garage as determined necessary by the
city planner.The minimum dimensions of the turnaround shall be eight feet in
width by 12 feet in depth.
(6) "Wheel strip" driveways are allowed,but the entire width of the driveway(from
outside to outside of the strips)will be considered hardcover.
Drawing 1 is included for illustrative purposes.
Page 8of17
Drawing 1: Minimum Driveway Standards
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Driveway Width "---_`; 1
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(20' Maximum)— —.-; Edge of Right-Of-Way
(Lot Line)
Minimum Driveway Standards
Page 9of17
Sec. 78-1682. Shared Driveways.
Where one or more properties (referred to as secondary property) gain its driveway
access from an adjacent property(a primary property)by virtue of a driveway easement,
the following shall apply:
(1) The portion of the shared driveway on the primary property that serves both
primary and secondary property shall be considered hardcover for the primary
property.
(2) That portion of the driveway on the primary property that serves only secondary
property shall not be considered hardcover for either primary or secondary
property.
Drawing 2 is included for illustrative purposes.
Page 10of17
Drawing 2: Driveway Easements
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Driveway Easements
Page 11 of 17
Sec. 78-1683. Standard Hardcover Inclusions.
The following hardcover items shall be included in proposed hardcover calculations
regardless of whether the noted features are proposed to be constructed at the time of a
building permit application:
(1) Proof of a two-car garage(detached or attached);
(2) A driveway for all garages, a minimum of twelve(12) feet in width, subject to
the standards in Section 78-1681;
(3) A 24-inch wide sidewalk connecting the front door to the driveway;
(4) The minimum stairway or landing at all exterior doors as required by the
building code; and
(5) Existing hardcover which encroaches (legally or illegally) onto an adjacent
parcel or parcels.
a. In such cases of encroachment, the square footage of all encroaching
hardcover shall be added to the overall hardcover on the subject lot
b. No credit shall be given towards the overall lot size of the subject lot.
Sec. 78-1684. Standard Hardcover Exclusions.
Landscaping with permeable lining shall not be considered hardcover. Additionally,
the following hardcover items shall be excluded from hardcover calculations:
(1) Roads, trails, sidewalks, utilities and other hardcover encroachments intended
for the public's benefit;
(2) Hardcover encroachments created by improvements on adjacent property not
owned by the subject landowner;
a. In such cases of encroachment, the square footage of all encroaching
hardcover shall not be added to the overall hardcover counting against the
subject lot;
b. The land area upon which the encroachment rests shall count towards the
overall lot area for the subject lot.
(3) Retaining walls;
(4) Handicapped ramps with a pervious surface below; and
(5) The first 100 square feet of pervious paver patios/walkways or the first 100
square feet of deck with a minimum 1/4 inch spacing between boards and a
pervious surface below the decking.
Page 12of17
Sec. 78-1685, Massing Standards.
(1) Non-Industrial Zoning Districts
Except for parcels zoned Industrial, all lots in the Stormwater Quality Overlay
District that have a gross acreage of less than two (2.0) acres shall comply with
the following massing standards for structures.
a. Maximum Total Footprints Allowed
1. On lots equal to or greater than 10,000 square feet in area, the total
combined footprints of all principal and accessory structures shall not
exceed 15 percent of the gross lot area.
2. On lots of less than 10,000 square feet in area, the total combined
footprints of all principal and accessory structures shall not exceed 1,500
square feet.
b. Calculation of Massing
The following shall be included in the calculation of the total combined
footprints by structures:
1. All roofed structures more than six feet above grade level.
2. Tennis courts, patios, decks, and all similar open structures when
partially or fully enclosed by fences, railings or walls which extend more
than six feet above grade level (if any portion of such structures extends
more than six feet above grade level, the entire structure shall count
toward lot coverage),
(2) Industrial Zoning District
For parcels zoned Industrial, the following massing standards for structures
shall apply.
a. On lots equal to or less than three (3) acres in area,the total combined
footprints of all principal and accessory structures shall not exceed 35
percent of the gross lot area.
b. On lots greater than three (3) acres in area, the total combined footprints of
all principal and accessory structures shall not exceed 45 percent of the
gross lot area; except that when the total building floor area on a site is
contained within a single building, and when the total area used for loading
terminals, docks and berths is completely enclosed within the same single
buildin' a let c s vera•e of not mere than 60 s ercent •f the . os l•t area will
be permitted.
Page 13 of'17
Sec. 78-1686. Variances.
Variances to hardcover, if granted on lots within the Stormwater Quality Overlay
District,may be subject to mitigation measures deemed appropriate by the City Council
to offset the impacts generated by the proposed additional hardcover.
Sec. 78-1687—78-1699. Reserved.
DIVISION 3. REGULATIONS BASED ON ASSIGNED PROTECTION TIER AND
UNDERLYING ZONING
Sec. 78-1700. Specific Tier Regulations.
Per the official Stormwater Quality Overlay District Map, each property in the
stormwater quality protection overlay district is assigned to a protection tier based on its
relative distance to receiving waters. This protection tier dictates the specific protection
measures that must be implemented.
(1) Tier 1 Parcels
Hardcover shall not exceed twenty-five (25) percent of the gross lot area,
(2) Tier 2 Parcels
Hardcover shall not exceed thirty(30)percent of the gross lot area.
(3) Tier 3 Parcels
Hardcover shall not exceed thirty-five (35) percent of the gross lot area.
(4) Tier 4 Parcels
Hardcover shall not exceed fifty(50)percent of the gross lot area,
(5) Tier 5 Parcels
Hardcover shall not exceed eighty-five (85)percent of the gross lot area.
Sec. 78-1701. Tier Assignment Methodology
The inclusion of parcels into the Stormwater Quality Overlay District is based on the
following methodology.
(1) Examine each parcel and determine whether or not it abuts a protected lakeshore
or stream.
a. All parcels that abut a protected lakeshore or stream shall be placed into
Protection Tier 1.
Page 14 of 17
b. All parcels that do not abut a protected lakeshore or stream shall be
examined under the criteria in section 78-1701(2)below.
(2) Determine the location of the primary building area on the parcel being examined.
The primary building area shall be identified by the location of an existing
primary structure (if applicable), or by considering required setbacks and/or the
average location of structures on adjacent lots.
a. If the primary building area is wholly within 250' of a protected lakeshore
or stream, the parcel shall be placed into Protection Tier 1.
b. If the primary building area is wholly NOT within 250' of a protected
lakeshore or stream, the parcel shall continue to be examined under the
criteria in section 78-1701(3)below.
c. If the primary building area is divided by the 250' delineation line, the
following assessment shall guide the designation:
i. If an adjacent parcel abutting by a side lot line is already assigned to
Protection Tier 1,the parcel shall be placed into Protection Tier 1.
ii. If all adjacent parcels abutting by a side lot line have not been assigned
to a protection tier, the parcel shall continue to be examined under the
criteria in section 78-1701(3)below.
(3) Using the location of the primary building area as identified in section 78-
1701(2), determine the distance between the primary building area and the nearest
protected lake or stream. Distances shall be measured from the required setback
nearest the protected water body to the OHWL.
a. If any portion of the primary building area is at a distance of 300' or less
from a protected stream or is at all touching the landward extent of
floodplain from a stream, the parcel shall be placed into Protection Tier 2.
b. If any portion of the primary building area is at a distance between 250'
and 500' from a protected lakeshore, the parcel shall be placed into
Protection Tier 2.
c. If the primary building area is at a distance greater than 500' and up to
1000' from a protected lakeshore, the parcel shall be placed into
Protection Tier 3.
d. If the primary building area is beyond a distance of 1000' from a protected
lakeshore or stream,the parcel shall continue to be examined under the
criteria in section 78-1701(4)below.
Page 15 of 17
(4) Determine the zoning of the subject parcel.
a. If the property is zoned Residential Planned Unit Development (RPUD),
the parcel shall be placed into Protection Tier 4.
b. If the property is zoned Industrial (I), the parcel shall be placed into
Protection Tier 5.
c. If the parcel being examined has not yet been assigned to a Protection
Zone, the parcel shall continue to be examined under the criteria in section
78-1701(5)below.
(5) Determine whether the unassigned parcel (or group of unassigned parcels) is
within a gap. A gap is an area of 20 acres or less that is largely surrounded by
parcels assigned to protection tiers. Roadways, if present, will be used as a
dividing line when identifying gap areas.
a. Beginning with parcels on an individual basis, if more than half of the
border of a parcel is regulated via one of the protection tiers, the parcel
shall be placed into the tier which abuts the parcel by the greatest
percentage.
b. Unassigned parcel groupings of 20 acres or less that have more than half
of the group's overall border regulated via one of the protection tiers shall
be placed into the tier which abuts the group area by the greatest
percentage.
c. Parcels still unassigned to a protection tier following review under Section
78-1701(5)(b) above shall be exempt from Stormwater Quality Overlay
District regulations.
As new parcels are created within the City as a result of subdivision, each new parcel
shall be examined under this methodology to determine whether it belongs within a
protection tier as part of the overlay district, or be exempt from the regulations of this
Article.
Sec. 78-1702 — 78-1724. Reserved.
Page 16 of 17
Section 12. Effective date.
This ordinance shall be effective upon adoption and publication according to law.
ADOPTED this 24th day of September, 2012 by the Orono City Council.
CITY OF ORONO
Lili Tod McMillan, Mayor
ATTEST:
Linda S. Vee, City Clerk
Page 17 of 17
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Hardcover Information
www.ci.orono.mn.us
952-249-4620
Since 1975, the City of Orono has regulated hardcover on properties within 1,000 feet of lakes. In 1992,
hardcover regulations were added for properties within 300 feet of Painters, Long Lake, Wolsfeld, Stubbs Bay,
and Dickey Lake creeks. Hardcover is any surface that does not allow direct absorption of rainfall into the
ground. Limiting hardcover helps improve water quality and promotes aquifer recharge.
HARDCOVER ALLOWED
Distance from the ordinary high water
(OHW) of a lake or top of bank of a creek Amount of Hardcover allowed
0 to 75 feet No hardcover except lake access stairs when needed, an 8'
wide driveway when needed, a dock landing of up to 32 square
feet, and retaining walls approved by a conditional use permit.
75 to 250 feet 25% of the property within that zone
250 to 500 feet 30% of the property within that zone
500 to 1000 feet 35% of the property within that zone
Hardcover may be increased up to the unused square footage of allowable hardcover of a zone closer to the
OHWL. Unused hardcover cannot be transferred to a zone closer to the lake.
The allowed hardcover in any zone shall be decreased by the amount of legal-non-conforming hardcover in the
zone next closer to the OHWL.
HARDCOVER INCLUDES:
• Roofs • Swimming Pools
• Sidewalks, steps, and patios • Porous or pervious pavement
• Decks, including decks on play equipment • Tennis or Sport Courts
(even if there are gaps between the boards) • The portion of a roof overhang that extends
• Driveways, regardless of surface material more than 2 feet from the wall
• Tops of retaining walls, including boulder • Any other vehicle, material, equipment, or
walls, and isolated boulders structure that prevents absorption of rainfall
• Landscape areas underlain by weed control and is maintained in the same location long
fabric of any sort. enough that no vegetation grows under it.
ASSUMED HARDCOVER
The following items must be included in hardcover calculations regardless of whether or not they are proposed to
be constructed:
1. A two car garage (detached or attached).
2. A driveway to any garage or storage area with a door wider than six feet
3. Minimum dimensions for driveways (see drawing on reverse side)
4. 24 inch wide sidewalk from the front door to the driveway and stairway/landing at exterior doors
EXCHANGE OF HARDCOVER
If a property exceeds allowed hardcover Staff does not have the authority to approve new hardcover even if an
equal amount of hardcover is removed.
SURVEYS AND HARDCOVER CALCULATIONS
When a building permit is requested for expansion or construction of a structure a survey and hardcover
calculation worksheets may be required to demonstrate compliance with hardcover regulations.
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
-20 -
HARDCOVER COMPLIANCE
Illegal hardcover may be required to be removed before a building permit is issued. Illegal hardcover is
hardcover in excess of that allowed by a hardcover variance or hardcover in excess of that allowed by the Code
that was added to the property after 1975 or 1992.
FOR MORE INFORMATION
Contact the Planning and Zoning Department at 952-249-4620 or planning@ci.orono.mn.us.
Reference: City Code Section 78-1288
May, 2009
8' –.I—
Backup
Backup Apron
(If Required)
• / / / / / / / / / / / / / / / /
/ 8'x8'Minimum
Garage
/ / \
/
/ o
t e
8 OD
§
Side Load E o
/ 7 m
E
E C7
/ Apron Depth 20'Min.
End Load
4'Rad f
4 / f " (Min)
Minimum Width of
£ Garage Door
a
0 6
0 in
0
+ ,
a
Minimum Taper E
z Driveway Width
2:1 2 E 8'Minimum
f
(20'Maximum)
Driveway Width 1
8'Minimum
5'Rad. 5'Rad.
(20'Maximum)—I _ Edge of Right-Of-Way
(Lot Line)
Minimum Driveway Standards
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
-21 -
r —r I
r-,-7,-,--,-7-T/'7 TJ- 7r\T -v "c",:•-•-c C,
l" 1 1, J
House House j
T,77 7777 J7/T/T y I..,
/
LJ1 L/_11 4--/1 L/—./ Garage 1 Garage J i"..-•-1.-•- \� 1
L, L1 L1/1/ _4
Primary `ip Secondary
Property Al Property
r I
I
I
L J
�/7 7-7—/-5 T/-7 T!A (C-C-\T\--\—[T\RT��
l" 1 1, J
I, House 4 ( House
A-777777'7 77 77/3
y
L/1.4-/--4-‘-U1/—/—./ Ga'a e f GarageLV1U1L.\.- 1\
L.f.LL.I L1,1/ .d L .\.a..a L,as uI
Primary Secondary
onda
ry
Property \ Property
y
1_ _1_ J
/�/� =Excludable area-not covered in area
nor hardcover of primary lot.Also not
added to the hardcover calculations for
the secondary property.
Driveway Easements
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
-22 -
Overhang
$ E
•• E
• .•• Post/Su••ort
4 f
40
i♦
Hardcover
•
I-11-11-11-11-11-11-n-11-11-11-11-11-1-n-1-u-11-ru-
Overhang
2'
•
No
No
No
Wall NNo
o
;•, H.r•c•v-r N. • • •v-1-
—n=n
Address: Date:
Prepared by:
HARDCOVER CALCULATION WORKSHEET
SETBACK ZONE: (CIRCLE ONE) 0-75' 75-250' 250-500' 500-1000'
EXISTING HARDCOVER IN ZONE
A. House x = S.F.
Length Width
x = S.F.
x = S.F.
B. Garage x = S.F.
C. Driveway x = S.F.
x = S.F.
D. Sidewalk x = S.F.
x = S.F.
E. Patio/Deck x = S.F.
x = S.F.
F. Landscape x = S.F.
Underlain x = S.F.
By Plastic x = S.F.
G. Retaining Walls x = S.F.
H. Other x = S.F.
TOTAL HARDCOVER IN ZONE - S.F. A
TOTAL PROPERTY AREA IN ZONE - S.F. B
A = B x100 = %
PROPOSED HARDCOVER IN ZONE (including existing hardcover to be retained)
A. House x = S.F.
Length Width
x = S.F.
x = S.F.
B. Garage x = S.F.
C. Driveway x = S.F.
x = S.F.
D. Sidewalk x = S.F.
x = S.F.
E. Patio/Deck x = S.F. 1
x = S.F.
F. Landscape x = S.F.
Underlain x = S.F.
By Plastic x = S.F.
G. Retaining Walls x = S.F.
H. Other x = S.F.
TOTAL HARDCOVER IN ZONE - S.F. A
TOTAL PROPERTY AREA IN ZONE - S.F. B
A = B x100 = ok
-24 -
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Hardcover Information
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L www.ci.orono.mn.us
4kEs OR" 952-249-4620
The City of Orono recognizes through its comprehensive plan that managing stormwater runoff is essential for
protection of the water quality of Lake Minnetonka and Orono's other lakes, for preservation of the natural wildlife
habitat within marshlands, and for protection against flooding and flood damage. Since 1975 Orono has regulated
hardcover within 1,000 feet of lakes, and since 1992 also within 300 feet of Painters, Long Lake, Wolsfeld, Stubbs
Bay, and Dickey Lake creeks. Limiting hardcover helps to improve water quality by allowing for infiltration of
stormwater runoff into the ground as well as promoting aquifer recharge.
In September 2012 the City updated its hardcover regulations and established the Stormwater Quality Overlay
District, encompassing all properties that are subject to hardcover regulations. Hardcover `zones' based on set
distances from the lakeshore have been eliminated, and properties in the District have each been assigned to one
of five 'Tiers' within which a defined percentage of the entire property is allowed to be hardcovered. The Tier
assignments were established based primarily on proximity to a lake or waterway, and are documented in the
official Stormwater Quality Overlay District Tier Map. The percentage of hardcover allowed within each Tier is
shown in the following table:
Assigned Tier Allowed Hardcover Percentage
Tier 1 25% of gross lot area
Tier 2 30% of gross lot area
Tier 3 35% of gross lot area
Tier 4 (properties zoned RPUD) 50% of gross lot area
Tier 5 (properties zoned Industrial) 85% of gross lot area
The updated regulations allow most lakeshore properties additional hardcover as compared to the previous
ordinance. Also, the definition of hardcover has been revised to not include porous landscaping materials
underlain by permeable landscaping fabric. The updated definition of`hardcover' is as follows:
Hardcover means a hard surface that prevents or retards entry of water into the soil and causes water
to run off the surface in greater quantities and at an increased rate of flow than prior to development.
Hardcover shall include but not be limited to the following: all building footprints, driveways,
sidewalks, stepping stones, retaining walls, patios, courts (sport, tennis, etc), decks, pools, areas
used for the extended outdoor storage of vehicles or equipment, and all other similar features or
surfaces as determined by the City Engineer or City Planner.
HARDCOVER INCLUDES:
• Roofs • Porous or pervious pavement
• Sidewalks, steps, and patios • Tennis or Sport Courts
• Decks, including decks on play equipment • Building Footprints - see definitions below.
(even if there are gaps between the boards) • Any other vehicle, material, equipment, or
• Driveways, regardless of surface material structure that prevents absorption of rainfall
• Tops of retaining walls, including boulder and is maintained in the same location long
walls, and isolated boulders enough that no vegetation grows under it.
• Swimming Pools
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
1 /6
•
OTHER DEFINITIONS
Building Footprint means the outline of the total area covered by a building's perimeter at the ground level (to the
block/foundation).
(1) Carports, covered porches and other similar building features which have no exterior walls shall be
included as part of a building footprint by drawing a straight line between the outer edges of all support
structures (and the main building if applicable).
(2) The outer edge of building protrusions, bay windows or other similar features that extend outward from a
building and are less than four feet from the ground shall be considered as part of the building footprint.
Permeable Lining (landscaping fabric) means a porous material used for weed prevention that allows storm water
to permeate into the ground.
Pervious Paver means concrete, asphalt or similar blocks with holes of some kind that allow water to go through
the surface into a specialized aggregate base—consistent of an open-graded aggregate—and into the soils
below.
Pervious Surface means naturally occurring groundcover or a variety of types of pavement, pavers and other
devices that provide stormwater infiltration while serving as a structural surface.
ASSUMED HARDCOVER
The following items must be included in hardcover calculations regardless of whether or not they are proposed to
be constructed at the time of a building permit application:
(1) Proof of a two car garage (detached or attached).
(2) A driveway for all garages, a minimum of 12 feet in width subject to the driveway standards listed below
or storage area with a door wider than six feet???
(3) Minimum dimensions for driveways (see Minimum Driveway Standards drawing attached)
(4) 24 inch wide sidewalk connecting the front door to the driveway
(5) The minimum stairway/landing at all exterior doors as required by the building code
(6) Existing hardcover which encroaches (legally or illegally) onto an adjacent parcel or parcels.
a. In such cases of encroachment, the square footage of all encroaching hardcover shall be added to
the overall hardcover on the subject lot;
b. No credit shall be given towards the overall lot size of the subject lot.
DRIVEWAY STANDARDS
All driveways shall comply with the following minimum dimensional standards:
Driveways serving end loading garages shall maintain a width equivalent to the width of all overhead doors
extending 15 feet out from the garage doors.
(1) Driveways serving side loading garages shall provide a minimum turn around or back up depth of 20 feet,
as measured from the garage door(s).
(2) Minimum driveway taper ratio shall be 2:1.
(3) Driveways shall be at least eight feet in width at the street or private road.
(4) A turnaround shall be provided for a driveway with direct access to an arterial or collector roadway, or for
a side load garage as determined necessary by the city planner. The minimum dimensions of the
turnaround shall be eight feet in width by 12 feet in depth.
(5) "Wheel strip" driveways are allowed, but the entire width of the driveway (from outside to outside of the
strips) will be considered hardcover.
See "Minimum Driveway Standards" drawing attached.
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
2/6
SHARED DRIVEWAYS
Where one or more properties (referred to as secondary property) gain its driveway access from an adjacent
property (a primary property) by virtue of a driveway easement, the following shall apply:
(1) The portion of the shared driveway on the primary property that serves both primary and secondary
property shall be considered hardcover for the primary property.
(2) That portion of the driveway on the primary property that serves only secondary property shall not be
considered hardcover for either primary or secondary property.
See "Driveway Easements" drawing attached.
STANDARD HARDCOVER EXCLUSIONS.
Landscaping with permeable lining shall not be considered hardcover. Additionally, the following hardcover items
shall be excluded from hardcover calculations:
(1) Roads, trails, sidewalks, utilities and other hardcover encroachments intended for the public's benefit;
(2) Hardcover encroachments created by improvements on adjacent property not owned by the subject
landowner;
a. In such cases of encroachment, the square footage of all encroaching hardcover shall not be added
to the overall hardcover counting against the subject lot;
b. The land area upon which the encroachment rests shall count towards the overall lot area for the
subject lot.
(3) Retaining walls;
(4) Handicapped ramps with a pervious surface below; and
(5) The first 100 square feet of pervious paver patios/walkways or the first 100 square feet of deck with a
minimum 1/4 inch spacing between boards and a pervious surface below the decking.
HARDCOVER RESTRICTED WITHIN 75 FEET OF LAKESHORE
Within 75 feet of the Ordinary High Water Level (OHWL) of any lake or tributary, and within any bluff or shore
impact zone, no hardcover shall be placed, located or constructed, except for driveways, stairways, lifts, landings
and lockboxes as regulated by the Shoreland Overlay District.
EXCHANGE OF HARDCOVER
If a property exceeds allowed hardcover Staff does not have the authority to approve new hardcover even if an
equal amount of hardcover is removed.
SURVEYS AND HARDCOVER CALCULATIONS
When a building permit is requested for expansion or construction of a structure a survey and hardcover
calculation worksheets may be required to demonstrate compliance with hardcover regulations.
VARIANCES
Variances to hardcover, if granted on lots within the Stormwater Quality Overlay District, may be subject to
mitigation measures deemed appropriate by the City Council to offset the impacts generated by the proposed
additional hardcover.
HARDCOVER COMPLIANCE
Illegal hardcover may be required to be removed before a building permit is issued. Illegal hardcover is
hardcover in excess of that allowed by a hardcover variance or hardcover in excess of that allowed by the Code
that was added to the property after 1975 or 1992.
FOR MORE INFORMATION
Contact the Planning and Zoning Department at 952-249-4620 or planning( ci.orono.mn.us.
Reference: City Code Sections 78-1670 thru 78-7801
September 24, 2012
This is an information sheet. Every effort has been made to insure the accuracy of the information contained herein;however,
if any information is not consistent with provisions of the City Code, the Code provisions will prevail.
3/6
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This is an information sheet. Every effort has been made to insure the accuracy of the information contained
herein;however, if any information is not consistent with provisions of the City Code, the Code provisions
will prevail.
4/6
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This is an information sheet. Every effort has been made to insure the accuracy of the information contained
herein;however, if any information is not consistent with provisions of the City Code, the Code provisions
will prevail.
6/6