HomeMy WebLinkAbout3/10/09
City of Farmington
430 Third Street
_armington, MN 55024
AGENDA
PLANNING COMMISSION
March 10, 2009
7:00 P.M.
CITY COUNCIL CHAMBERS
1. CALL TO ORDER
2. APPROVAL OF MINUTES
a) February 10, 2009
3. PUBLIC HEARINGS
A Proud Past. A Promising Future
Committed to Providing High Quality,
Timely and Responsive Service to All
Of Our Customers
a) Conditional Use Permit allowing a Farmers Market (outdoor sales) in the B.3 Zoning District.
Location: 109 Spruce Street
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
b) Ordinance amending Title 10, Chapter 5, Section 25 of the City Code regarding Floodplain Overlay District.
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
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c) Ordinance amending Title 10, Chapter 6, Section 17 of the City Code regarding Wetland Standards.
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
d) Ordinance amending Title 10, Chapter 6, Section 18 of the City Code regarding Shoreland Management
Regulations.
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
e) Ordinance amending Title 10, Chapter 6, Section 27 of the City Code regarding Erosion Control Required.
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
f) Ordinance amending Title 11, Chapter 4, Section 7 of the City Code regarding Storm Drainage.
Applicant: City of Farmington
430 Third Street
Farmington, MN 55024
4.
DISCUSSION
-5.
None
ADJOURN
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City of Farmington
430 Third Street
Farmington, Minnesota
651.280.6800 . Fax 651.280.6899
www.ci.farmington.mn..us
TO:
FROM:
SUBJECT:
DATE:
INTRODUCTION
Planning Commission
Tony Wippler, Assistant City Planner ct
Conditional Use Permit to allow a Farmers Market (outdoor sales) - 109 Spruce
Street
March 10, 2009
The City of Farmington is requesting approval of a Conditional Use Permit [CUP] for purposes of hosting
a Farmers Market on the property located at 109 Spruce Street and previously referred to as the Lamperts
Lumber Yard. The CUP is to allow outdoor sales to occur on this property.
Planning Division Review
Applicant:
Owner of Property:
Attachments:
Location of Property:
Surrounding Land Uses:
Existing Zoning:
Comprehensive Plan:
Current Land Use:
City of Farmington
430 Third Street
Farmington, MN 55024
Sackett Properties, LLC
% Steven & Molly Aaron
912 Westlyn Court
Farmington, MN 55024
1. Exhibit A - CUP Application and Map
2. Exhibit B - Applicant's Summary
3. Exhibit C - Photos of Property
4. Exhibit D - General Site Plan
5. Exhibit E - Aerial photograph of property
109 Spruce Street
Entire block is zoned B-3, however, single-family uses are adjacent to
the west, multi-family is adjacent to the north, and the Gilbertson Feed
and Grain Elevator is adjacent to the east and south.
B-3 (Heavy Business); Outdoor Sales is a conditional use in this district.
Commercial
Chiropractic Office (main office building), and vacant lumber yard.
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DISCUSSION
The Economic Development Authority (EDA) for the City of Farmington has directed the Economic
Development staff to research the feasibility of holding an annual Farmers Market and then to begin the
process of implementing the market, if a suitable location was found (preferably within or near the
downtown). The ED staff has reached an agreement with the owners of 109 Spruce Street (old Lamperts
Lumber Yard) to utilize the vacant lumber yard for the Farmers Market.
A Farmers Market falls under the zoning definition of Outdoor Sales, which is a conditional use in the
zoning district that encompasses this property (B-3). This definition is as follows:
OUTDOOR SALES: The intermittent buying and selling plus leasing and trading of goods,
merchandise or materials where such goods are not enclosed within a
building.
As indicated in the applicants' memorandum, attached as Exhibit B, the market would be held on
Thursday afternoons from 3:00 pm -7:00 pm for a period of twelve weeks (July 9,2009 to September 24,
2009). These dates may vary from year to year. The market will consist of vendors selling produce,
plants, and home produced food items. It is anticipated that the market will be an annual event. The
CUP, if approved, will run with the land. Therefore, the applicant will not have to apply for a CUP each
year that a Farmers Market is hosted at this site. If, in the future, the market were to move to another
location a new Conditional Use Permit would be required to be approved by the Planning Commission.
Parking
The subject property is located outside of the B-2 (Downtown Business) Zoning District and therefore is
subject to the City's off-street parking requirements. Section 10-6-4 of the City Code outlines the off-
street parking requirements based on property use. These requirements are enforced when a new use is
established or an existing use is enlarged on a property. Outdoor Sales is not specifically identified in the
parking standards. However, it is anticipated that some parking will be available on site for vendors and
patrons. The number of on site parking spaces have yet to be identified however, staff feels there is
adequate room on site to safely accommodate vendor space as well as parking. Additionally, the subject
property is in close proximity to a number of parking facilities (2nd Street parking lot, City Hall parking
lot, and Library parking lot) that may be available for patrons to use.
A generic site plan is attached as Exhibit D which shows a general layout of the vendor spaces as well as
on-site parking. It should be noted that the layout of the market will likely change depending on the
number of vendors that reserve a booth.
Signage
It is anticipated that the signage for the Farmers Market will consist ofthe following:
· 20 special event signs
· 2 banners
The special event signs cannot exceed four (4) square feet in area and must be placed on private property.
If these signs are to be placed on a comer lot they must be located outside of the triangle of visibility.
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A sign permit indicating the official number of signs and locations will be required prior to the
installation of any signage.
Conditional Use Permit
The City Code provides criteria that must be satisfied for the Planning Commission to grant a Conditional
Use Permit. Those criteria are:
I. The proposed use conforms to the district permitted and conditional use provisions and all general
regulations of this title.
2. The proposed use shall not involve any element or cause any conditions that may be dangerous,
injurious or noxious to any other property or person and shall comply with the performance
standards listed below.
3. The proposed use shall be constructed, designed, sited, oriented and landscaped to produce
harmonious relationship of buildings and ground to adjacent buildings and properties.
4. The proposed use shall produce a total visual impression and environment which is consistent
with the environment of the neighborhood.
S. The proposed use shall organize vehicular access and parking to minimize traffic congestion in
the neighborhood.
6. The proposed use shall preserve the objectives of this title and shall be consistent with the
comprehensive plan.
City staff has reviewed the Conditional Use Permit application and has determined that the request meets
all applicable City requirements for the CUP.
ACTION REOUESTED
Approve the Conditional Use Permit with the following contingencies:
1. The applicant must secure a sign permit prior to the installation of any signage.
Respectfully submitted,
-t;kJ;!l
Tony Wippler, Assistant City Planner
Cc: Lisa Dargis, Administrative Assistant, City of Farmington
Dr. Molly Aaron
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City of Farmington
430 Third Street
Farmington, Minnesota
651.280,,6800. Fax 651280,6899
www.ciJannington.mn.us
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CONDITIONAL USE PERMIT APPLICATION
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Applicant:
Address:
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Specific Nature of Request:
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SUBMITTAL REOUIREMENTS
D Proof of Ownership
D Application Fee
D Boundary I Lot Survey
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Current Zoning District
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City of Farmington
430 Third Street
Farmington, Minnesota
651.463.7111 . Fax 651.463.2591
www.ci.farmington.mn.us
TO:
Planning Commissioners
FROM:
Lisa Dargis, Administrative Assistant
SUBJECf: Outdoor Sales Conditional Use Permit
DATE:
February 10, 2009
INTRODUCfION
The City of Farmington will be hosting an outdoor farmers' market in the downtown
area.
DISCUSSION
At the direction of the EDA, staff has been working to coordinate a local outdoor
farmers' market to be held at 109 Spruce Street, (the former Lampert's Lumber site).
The site is now owned by Sackett Properties and is the home of Aaron Chiropractic. The
outdoor storage areas on the parcel are currently not being used and would be the
location of the market activities. This event will be held Thursday afternoons from
3:00-7:00 for a period of twelve weeks from July 9, 2009 until September 24, 2009.
Vendors will be invited to sell produce, plants and home produced food items at the
market. As an additional reason for residents to travel to the downtown, the farmers'
market will serve as a means to support our downtown business district and increase
traffic to the area.
ACfION REQUESTED
Approve the conditional use permit allowing outdoor sales for the farmers' market event
to be hosted on the former Lampert's Lumber (Aaron Chiropractic) site.
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Dakota County, MN
Disclaimer: Map and parcel data are believed to be accurate, but accuracy is not
guaranteed" This is not a legal document and should not be substituted for a title search,
appraisal, survey, or for zoning verification"
MaR Scale
1 inch = 109 feet
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City of Farmington
430 Third Street
Farmington, Minnesota
651.280.6800 . Fax 651.280.6899
www.ci.farmington.mn.us
TO:
Planning Commission
Lee Smick, AICP i ~
City Planner
FROM:
SUBJECT:
Amend Zoning and Subdivision Ordinances
DATE:
March 10, 2009
INTRODUCTIONIDISCUSSION
The attached zoning and subdivision ordinances were approved by the City Council on
December 1,2009. Upon approval, the Vermillion River Watershed Joint Powers Organization
(VRWJPO) requested the opportunity to review and comment on the final rendition of the
ordinances. In their review, the VRWJPO stated that the ordinances "have all of the essential
elements of the Vermillion River Watershed Standards", but they offered some recommendations
for corrections (Exhibit A). The corrections included the following:
1. the "LGU" be changed to "City",
2. the "Cities and Townships" be changed to "City",
3. Section 4 in the Minimum Buffer Areas be revised and renumbered, and
4. the issue date for the NPDES General Construction Permit be revised from "2003" to
"2008".
ACTION REOUESTED
Recommend approval of the attached ordinance revisions for Title 10 and Title 11 of the
Farmington City Code and forward the recommendation to the City Council.
Respectfully Submitted,
tttt~~
Lee Smick, AICP
City Planner
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Vermillion River Watershed Joint Powers Organization
14955 Galaxie Avenue ~ Apple Valley, MN 55124
952.891.7030 ~ Fax 952.891.7031
www.co.dakota.mn.us/Cou ntyGove rn ment/ Pu bl icEntities JVerm i II io nJ PO
January 26, 2009
Ms. Jen Dullum
City of Farmington
430 Third Street
Farmington, MN 55024
RE: Review of Local Ordinance for Conformance with VRWJPO Standards
.
The VRWJPO appreciates the opportunity to review and comment on the City of
Farmington Ordinances 008-593 and 008-594. The Vermillion River Watershed Joint
Powers Organization (VRWJPO) Engineer has reviewed the ordinances and has
indicated to staff that the ordinances have all of the essential elements of the Vermillion
River Watershed Standards incorporated within them. The VRWJPO does not have
any comments concerning the contents of the ordinances, but have the following
recommendations for corrections:
. All parts that have the word "LGU" be changed to "city." (I find six places in Ord.
008-593 and three places in Ord. 008-594) In Ord. 008-594, Section 1 (D) 2 (b),
"Cities and Townships" should be changed to "city" or deleted.
. In Ord. 008-593, Section 4, (E), 3. i) Minimum Buffer Areas, Conservation
Corridor in Farmington applies only to the Upper Reach of the Vermillion River.
The paragraphs under the Sub-title "Conservation Corridor" should be revised
and renumbered to be:
(1) Conservation Corridor: Upper Reach of the Vermillion River (.............)-
Required buffer width 150-foot ..........
(2) Aquatic Corridor - Principal Connector: Required.....................
(3) Aquatic Corridor - Principal Connector with Trout Stream Designation: 100
foot,...............
(4) Aquatic Corridor - Tributary Connector: 50-foot..........
(5) Water Quality Corridor: 30-foot..................
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. Last year, MPCA issued a revised NPDES General Construction Permit effective
until August 1, 2013. The issue date should be August 1, 2008 in Ord. 008-593,
Section 4, (E), 3. i) and Section 5, 10-6-27 (A) as well as in Ord. 008-594,
Section 1, (B) 1.
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_ Thank you again for the opportunity to review and comment. The VRWJPO appreciates
the effort the City has put forth on protecting its natural resources and looks forward to
more opportuniti~s to work together with the City. If you have any questions, please
contact me at your convenience at (952) 891-7546 or travis.thiel@co.dakota.mn.us.
Sincerely,
~.~~~
Travis Thiel
VRWJPO Watershed Specialist
Cc: Tae Kim, P.E., Dakota County Senior Water Resource Engineer
Mark Zabel, VRWJPO Administrator
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CITY OF FARMINGTON
DAKOTA COUNTY, MINNESOTA
ORDINANCE NO.
AN ORDINANCE AMENDING TITLE 10 OF THE FARMINGTON
CITY CODE, THE ZONING ORDINANCE, CONCERNING
FLOODPLAIN OVERLAY DISTRICT
THE CITY COUNCIL OF THE CITY OF FARMINGTON ORDAINS:
SECTION 1. Section 10-5-25 (F) of the Farmington City Code is amended by adding the
underlined language and deleting the strikethrough language as follows:
10-5-25 (F)(2): Permitted Uses, Standards, And Floodplain Evaluation Criteria
2. Standards For Floodplain Permitted Uses:
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(c) Projects that alter floodplain boundaries, such as bridge crossings and regional
ponds that increase upstream high water levels are allowed provided that:
(1) The applicant submits easements or other documentation in a form acceptable
to the :bGY City or the VRWJPO demonstrating and recording the consent of the
owner of any land affected by the increased high water levels,
SECTION 2. Effective Date. This ordinance shall be effective upon its passage and
publication according to law.
ADOPTED this _day of
Farmington.
, 2009, by the City Council of the City of
CITY OF FARMINGTON
By:
Todd Larson, Mayor
ATTEST:
.:
By:
Peter Herlofsky, Jr., City Administrator
.
SEAL
By:
Joel Jamnik, City Attorney
Published in the Farmington Independent the _ day of
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,2009.
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CITY OF FARMINGTON
DAKOTA COUNTY, MINNESOTA
ORDINANCE NO.
AN ORDINANCE AMENDING TITLE 10 OF THE FARMINGTON
CITY CODE, THE ZONING ORDINANCE, CONCERNING
WETLAND STANDARDS
THE CITY COUNCIL OF THE CITY OF FARMINGTON ORDAINS:
SECTION 1. Section 10-6-17 (D) of the Farmington City Code is amended by adding the
underlined language and deleting the strikethrough language as follows:
10-6-17 (D) No Net Loss And Wetland Alteration:
5. When a wetland alteration permit is issued allowing dredging, excavating or
grading in a wetland the following standards shall be followed in order to preserve
WCA exemption or no loss determination in Types 1,2,6, and 7 wetlands:
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(a) The dredging will not have a net adverse effect on the ecological and
hydrological characteristics of the wetland.
(b) It shall be located as to minimize the impact on vegetation and loss of wetland
function (as determined by the VRWJPO or bGY City). Exceptions may be
allowed in basins dominated by invasive exotic species such as reed canary grass
(Phalaris arundinacea).
SECTION 2. Section 10-6-17 (E) of the Farmington City Code is amended by adding the
underlined language and deleting the strikethrough language as follows:
10-6-17 (E) Wetland Buffer Areas:
1. For lots of record created after June 7, 1999 (date of original wetlands ordinance
adoption), a buffer area shall be maintained abutting all wetlands. The following
requirements shall be met concerning the wetland buffers:
(a) Where a buffer is required, the bGY City shall require the protection of the
buffer under a conservation easement, or include the buffer in a dedicated outlot
as part of platting and subdivision approval, except where the buffer is located in
a public transportation right-of-way.
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SECTION 3. Section 10-6-17 (E) of the Farmington City Code is amended by adding the
underlined language and deleting the strikethrough language as follows:
10-6-17 (E)Wetland Buffer Areas:
4. (a) Buffers shall be planted with a native seed mix approved by MnDOT, BWSR,
NRCS or the Dakota SWCD, with the exception of a one-time planting with an annual
nurse or cover crop. Plantings of native forbs and grasses may be substituted for seeding.
All substitutions must be approved by the WY City. Groupings/clusters of native trees
and shrubs, of species and at densities appropriate to site conditions, shall also be planted
throughout the buffer area.
(b) The seed mix and planting shall be broadcast/installed according to MnDOT, BWSR,
NRCS or Dakota SWCD specifications. The selected seed mixes and plantings for
permanent cover shall be appropriate for the soil site conditions and free of invasive
species.
(c) Buffer vegetation (both natural and created) shall be protected by erosion and
sediment control measures during construction.
(d) During the first five full growing seasons, except where the WY City has determined
vegetation establishment is acceptable, the owner or applicant must replant buffer
vegetation where the vegetative cover is less than 90%. The owner or applicant must
assure reseeding/or replanting if the buffer changes at any time through human
intervention or activities.
SECTION 4. Effective Date. This ordinance shall be effective upon its passage and
publication according to law.
ADOPTED this _day of
Farmington.
, 2009, by the City Council of the City of
CITY OF FARMINGTON
By:
Todd Larson, Mayor
ATTEST:
By:
Peter Herlofsky, Jr., City Administrator
SEAL
.
By:
Joel Jamnik, City Attorney
Published in the Farmington Independent the _ day of
,2009.
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CITY OF FARMINGTON
DAKOTACOUNTY,M~ESOTA
ORDINANCE NO.
AN ORDINANCE AMENDING TITLE 10 OF THE FARMINGTON
CITY CODE CONCERNING SHORELAND MANANGEMENT
REGULATIONS
THE CITY COUNCIL OF THE CITY OF FARMINGTON ORDAINS:
SECTION 1. Section 10-6-18 (E) of the Farmington City Code is amended by adding the
underlined language and deleting the striketlrrough language as follows:
10-6-18 (E)(3) Zoning And Water Supply/Sanitary Provisions:
3. Shoreland Buffer Areas:
(d) Requirements For Replanting: Where buffer vegetation and conditions are
unacceptable, or have been cultivated or otherwise disturbed within ten (10) years of
the permit application, or where approval has been obtained to replant, buffers shall
replanted and maintained according to the following Standards:
(1) Buffers shall be planted with a native seed mix approved by MnDOT, BWSR,
NRCS or the Dakota SWCD, with the exception of a one-time planting with an
annual nurse or cover crop. Plantings of native forbs and grasses may be
substituted for seeding. All substitutions must be approved by the WY City.
Groupings/clusters of native trees and shrubs, of species and at densities
appropriate to site conditions, shall also be planted throughout the buffer area.
(4) During the first five full growing seasons, except where the WY City has
determined vegetation establishment is acceptable, the owner or applicant must
replant buffer vegetation where the vegetative cover is less than 90%. The owner
or applicant must assure reseeding/or replanting if the buffer changes at any time
through human)ntervention or activities.
SECTION 2. Section 10-6-18 (I) of the Farmington City Code is amended by adding the
underlined language and deleting the strikethrough language as follows:
10-6-18 (I) Minimum Buffer Areas:
Conservation Corridor
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(1) Conservation Corridor- Lower Reach (Vermillion River downstream of Biscayne
Avenue): I 50-foot average, 100-foot minimum measured from the edge of the
meander belt of the river.
(2) Conservation Corridor - Upper Reach (Vermillion River upstream of Biscayne
Avenue and South Branch Vermillion River): 150-foot average, 100-foot minimum
measured from the edge of the meander belt of the river.
(3) Aquatic Corridor Principal Connector:
(3) Aquatic Corridor - Principal Connector: Required buffer width 100-foot average,
65-foot minimum measured from the edge of the meander belt of the river.
(4) Aquatic Corridor Principal Connector
(4) Aquatic Corridor - Principal Connector: with Trout Stream Designation: 100 foot,
no averaging, as required by the General Permit Authorization to Discharge Storm
Water Associated With Construction Activity Under the National Pollutant Discharge
Elimination System/State Disposal System Permit Program Permit MN Rl 0000 I
(NPDES General Construction Permit) issued by the Minnesota Pollutant Control
Agency, August 1, ~ 2008.
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(5) }..quatic Corridor: Tributary Connector:
(5) Aquatic Corridor -Tributary Connector: 50-foot average, 35-foot minimum: plus 2
feet for every 1 percent of slope measured from the edge of the meander belt of the
tributary.
(6) Water Quality Corridor:
(6) Water Quality Corridor: 30-foot average, 20-foot minimum where there is a flow
path for concentrated surface runoff measured from the center line of the flow path.
SECTION 3. Effective Date. This ordinance shall be effective upon its passage and
publication according to law.
ADOPTED this _day of
Farmington.
, 2009, by the City Council of the City of
.
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CITY OF FARMINGTON
ATTEST:
SEAL
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By:
By:
By:
Todd Larson, Mayor
Peter Herlofsky, Jr., City Administrator
Joel Jamnik, City Attorney
,2009.
Published in the Farmington Independent the _ day of
.
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CITY OF FARMINGTON
DAKOTA COUNTY, MINNESOTA
ORDINANCE NO.
AN ORDINANCE AMENDING TITLE 10 OF THE FARMINGTON
CITY CODE, THE ZONING ORDINANCE, CONCERNING
EROSION CONTROL REQUIRED
THE CITY COUNCIL OF THE CITY OF FARMINGTON ORDAINS:
SECTION 1. Section 10-6-27 (A) of the Farmington City Code is amended by adding the
underlined language as follows:
10-6-27: EROSION CONTROL REQUIRED:
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(A) A property owner or contractor who removes substantial vegetative growth for
any reason including landscaping, excavates for a building foundation or other
purpose, or adds soil or other fill on property within the city shall adhere to erosion
control measure standards and specifications contained in the Minnesota pollution
control agency publication "Protecting Water Quality In Urban Areas", as may be
amended, the city of Farmington comprehensive plan and official controls, the
General Permit Authorization to Discharge Storm Water Associated With
Construction Activity Under the National Pollutant Discharge Elimination
System/State Disposal System Permit Program Permit MN Rl 0000 1 (NPDES
General Construction Permit) issued by the Minnesota Pollutant Control Agency,
August 1, ~ 2008, as amended for projects disturbing more than 1 acre, and any
applicable water management plan of the city or other governmental units. Except as
other measures are required by the above documents and plans, property owners and
contractors shall take the necessary precautions, outlined below, to prevent soil
erosion, damage to adjacent property and control of surface water runoff. The city
may impose additional erosion control requirements if, in the opinion of the director
of public works or designee, said measures are necessary to protect adjacent
properties and manage surface water runoff.
SECTION 2. Effective Date. This ordinance shall be effective upon its passage and
publication according to law.
ADOPTED this _day of
Farmington.
, 2009, by the City Council of the City of
.
.
CITY OF FARMINGTON
By:
Todd Larson, Mayor
ATTEST:
By:
Peter Herlofsky, Jr., City Administrator
SEAL
By:
Joel Jamnik, City Attorney
.
Published in the Farmington Independent the _ day of
,2009.
.
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CITY OF FARMINGTON
DAKOTA COUNTY, MINNESOTA
ORDINANCE NO.
AN ORDINANCE AMENDING TITLE 11 OF THE FARMINGTON
CITY CODE, THE SUBDIVISION ORDINANCE, CONCERNING
STORM DRAINAGE
THE CITY COUNCIL OF THE CITY OF FARMINGTON ORDAINS:
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SECTION 1. Section 11-4-7 of the Farmington City code is amended by adding the
underlined language and deleting the strikethrough language as follows:
(A) All subdivision design shall incorporate adequate provisions for storm water
runoff consistent with the Farmington storm water management plan, as amended,
and be subject to revievI and approval of the city engineer and the City of Farmington
Standard Detail Plates and Engineering Guidelines. At the time each plat or replat is
approved, a connection charge shall be made for past, present or future storm sewer
costs, payable in cash, and shall be deposited in the "city surface water management
fund". The monies so collected will be used in accordance with the Farmington
comprehensive drainage plan. Connection charges shall be determined as set forth in
table 3, land use assessment rate, of the Farmington comprehensive drainage plan the
City Fee Schedule. The cash payment may be deferred, at an interest rate determined
by resolution of the City Council, to the time the first stage of development takes
place, so long as the terms of deferment are set forth in a developer's agreement
executed by the city and the owner of the plat.
SECTION 2. Section 11-4-7 (B) of the Farmington City code is amended by adding the
underlined language and deleting the strikethrough language as follows:
11-4-7 (B)(I): Post Construction Water Quality Criteria:
I. Post construction stormwater runoff quality measures shall meet the standard for
the General Permit Authorization to Discharge Storm Water Associated With
Construction Activity Under the National Pollutant Discharge Elimination
System/State Disposal System Permit Program Permit MN RI0000l (NPDES
General Construction Permit) issued by the Minnesota Pollution Control Agency,
August 1 ~ 2008, as amended; except where more specific requirements are
provided in paragraphs 2, 3, 4, and 5 below.
SECTION 3. Section 11-4-7 (C) of the Farmington City code is amended by adding the
. underlined language and deleting the strikethrough language as follows:
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11-4-7 (C)(I): Runoff Temperature Control Criteria:
1. Post construction runoff criteria for controlling temperature increases relies on the
establishment of buffers as specified in the Buffer Standard; the prioritization of
temperature sensitive BMPs such as infiltration and filtration, and the designation of
temperature sensitive wet pond design approaches in the Post Construction Water
Criteria above; and the control of runoff volume increases and the use of credits with
the Runoff Volume Control Criteria below. No additional specific temperature
criteria are incorporated since these other areas of the Standards emphasize
approaches sensitive to runoff temperature. However, since these other areas of the
Standards allow flexibility, and in some cases waivers: permit applications involving
the creation of one or more acres of new impervious surface in the trout stream
portions of the Vermillion River and its tributaries where such areas do not first drain
to a waterbody with 10 or more acres of open water; a. must include a narrative
description of the temperature sensitive practices incorporated; and,b. The WY City
or the VR WJPO may limit or deny waivers, or may require additional runoff
temperature BMPs, if the WY City or the VRWJPO finds that the site design does
not minimize the potential for runoff temperature increases.
.
SECTION 4. Section 11-4-7 (D)(2) of the Farmington City code is amended by adding
the underlined language and deleting the strikethrough language as follows:
11-4-7 (D) Peak Runoff Rate Control Criteria
2. Runoff rates for proposed activities, and development shall:
(a) Not exceed existing runoffrates for the I-year, and lO-year critical duration
storm events.
(b) Be implemented by Cities and Townships the City such that peak runoff rate
controls keep future peak flood flows for the Vermillion_River 100-year, 4- day
event from increasing above existing conditions peak flows. (While the VR WJPO
works to develop numerical Standards at a subwatershed scale, the Standard will
be implemented as follows: Runoff rates for proposed activities, and development
shall not exceed the existing rate for the 100-year critical duration storm event.)
SECTION 5. Section 11-4-7 (E) ofthe Farmington City code is amended by adding the
underlined language and deleting the strikethrough language as follows:
11-4-7 (E): Runoff Volume Control Criteria:
.
1. Development that creates one acre or more of new impervious surface must
incorporate volume control practices into the design sufficient to hold the runoff
volume for the 2-year 24-hour storm at pre-development conditions. Determination of
the necessary control volume to achieve this Standard can be completed by the WY
City on a regional basis and included in an approved Local Water Plan, or calculated
on a site-by-site basis for each individual proposal.
.
2. Credits for site design are the preferred methods for meeting the Volume Control
requirements and shall be considered prior to the design of infiltration or filtration
facilities.
3. The water quality control volumes necessary to meet the NPDES General
Construction Permit that are satisfied using infiltration or filtration technologies
(filtration only on Type C and D soils) can count toward the Volume Control
requirements of these Standards.
4. When using infiltration for volume control, infiltration volumes and facility sizes
shall be calculated:
(a) Using the appropriate hydrological soil group classification and saturated
infiltration rate shown below:
Hydrologic Soil Type A: 0.30 incheslhour
Hydrologic Soil Type B: 0.15 inches/hour
Hydrologic Soil Type C: 0.07 inches/hour
or,
.
(b) Using documented site specific infiltration or hydraulic conductivity
measurements completed by a licensed soil scientist or engineer, or
(c) Using the method provided in the Minnesota Stormwater Manual Volume 2
(MPCA 2005) pages 18 through 21 of Chapter 12-INF, and b. The design shall
consider the infiltration rates of the least permeable horizon within the first five feet
below the bottom of the infiltration practice, and c. The system shall be capable of
infiltrating the required volume in 72 hours.
5. Constructed infiltration facilities, such as infiltration basins and trenches:
.
(a) Can only be used if there is pretreatment of stormwater runoff designed to protect
the infiltration system from clogging with sediment and to protect groundwater
quality;
(b) Cannot be used within 400 feet of a municipal or other community supply well or
within 100 feet of a private well unless specifically allowed by an approved wellhead
protection plan;
( c) Cannot be used for runoff from fueling and vehicle maintenance areas and
industrial areas with exposed significant materials;
(d) Cannot be used on areas with less than 3 feet vertical separation from the bottom
of the infiltration system and the seasonal high water table;
(e) Cannot be used in Type D soils.
6. Infiltration areas must be fenced or otherwise protected from disturbance before the
land disturbing activity starts.
.
7. Volume control amounts may be waived by the bGY City or the VRWJPO for sites
with predominately Type C and D soils, or where a shallow water table prevents
construction of infiltration systems, provided the following are met in order of
decreasing preference:
(a) Credits and site design practices to minimize the creation of connected impervious
surfaces are used to the extent practical.
(b) Underdrains are used to promote filtration instead of infiltration.
8. Vegetation used in conjunction with infiltration systems must be tolerant of urban
pollutants, and the range of soil moisture conditions anticipated.
SECTION 6. Effective Date. This ordinance shall be effective upon its passage and
publication according to law.
ADOPTED this _day of
Farmington.
, 2009, by the City Council of the City of
CITY OF FARMINGTON
.
By:
Todd Larson, Mayor
ATTEST:
By:
Peter Herlofsky, Jr., City Administrator
SEAL
By:
Joel Jamnik, City Attorney
.
Published in the Farmington Independent the _ day of
, 2009.