HomeMy WebLinkAbout07/15/2008
AGENDA
MAPLEWOOD PLANNING COMMISSION
Tuesday, July 15, 2008
7:00 PM
City Hall Council Chambers
1830 County Road BEast
1. Call to Order
2. Roll Call
3. Approval of Agenda
4. Approval of Minutes
a. July 1, 2008
5. Public Hearings
a. 7:00 p.m. SI. John's Hospital Expansion-Conditional Use Permit Revision
6. New Business
a. 2008 Comprehensive Plan Update - Review and Discussion of Land Use Plan Update
7. Unfinished Business
8. Visitor Presentations
9. Commission Presentations
July 14 Council Meeting (Gethsemane Senior Housing): Mr. Martin
July 28 Council Meeting: Mr. Walton
August 11: Mr. Yarwood
August 25: Mr. Desai
10. Staff Presentations
a. Reminder: Special Meeting on July 29 for Continuing Comprehensive Plan Update Discussion
11. Adjournment
DRAFT
MINUTES OF THE MAPLEWOOD PLANNING COMMISSION
1830 COUNTY ROAD BEAST, MAPLEWOOD, MINNESOTA
TUESDAY, JULY 1, 2008
I. CALL TO ORDER
Chairperson Fischer called the meeting to order at 7:02 p.m.
II. ROLL CALL
Commissioner Joseph Boeser
Vice-Chairperson Tushar Desai
Chairperson Lorraine Fischer
Commissioner Harland Hess
Commissioner Robert Martin
Commissioner Gary Pearson
Commissioner Dale Trippler
Commissioner Joe Walton
Commissioner Jeremy Yarwood
Present
Absent
Present
Present
Present
Present
Present
Absent
Present
Staff Present:
Tom Ekstrand. Citv Planner
III. APPROVAL OF AGENDA
Commissioner Trippler moved to approve the amended agenda adding 1 O.c.;-Summer Tour Followup.
Commissioner Boeser seconded
The motion passed.
Ayes - all
IV. APPROVAL OF MINUTES
a. June 17, 2008
Commissioner Pearson moved approval of the amended minutes of June 17, 2008, changing
"keyboarding" to "clerical" on the bottom of page 3.
Commissioner Trippler seconded
Ayes - Fischer, Hess, Martin, Pearson, Trippler
Abstentions - Boeser, Yarwood
The motion passed.
V. PUBLIC HEARING
None
VI. NEW BUSINESS
a. 2008 Comprehensive Plan Update - Review and Discussion of Land Use Plan Update
City planner Tom Ekstrand introduced Mike Martin, consultant with MFRA. Mr. Martin explained that
the drafts of the transportation and sanitary sewer chapters would be reviewed tonight, followed by
discussion of a concern brought up at the last meeting concerning a land use designation.
Planning Commission
Minutes of 07-01-08
-2-
Brandon Bordon and Jon Horn of Kimley-Horn were present at the rneeting. Mr. Bordon gave ;:1
presentation on the following three components of the transportation chapter: roadways, transit
related components, and bicycling and pedestrians. Mr. Bordon said traffic trend information predicts
that traffic in Maplewood is projected to increase between .5 and 2 percent per year and averages 1
percent.
Commissioner Trippler suggested the consultants check on whether future bus traffic usage on the
Vento Trail is still being considered as an option.
Jon Horn of Kimley-Horn gave a brief overview of the sanitary sewer chapter.
Commissioner Martin asked if the commissioners could have access to an interactive map for use as
a review tool. Mike Martin responded that there are neighborhood maps in PDF format as part of the
comprehensive plan on the city's website.
Commissioner Trippler discussed recent gas price increases and the downturn in the econorny and
suggested that something be noted in the plan regarding changes in driving patterns. Mr. Bordon said
this suggestion makes sense and will be added to the draft.
Comrnissioner Boeser said he is not impressed with the public transportation planning noted in the
draft transit chapters and suggested that public transportation will become more irnportant in the future
and should be encouraged in this plan. Mr. Boeser suggested consideration be given to what can be
done to increase the use of public transportation and accomrnodate any potential use of public
transportation in the city.
The commission suggested changes to the second to the last paragraph on page four referring to
telecommuting. There was consensus that there is a problem with the meaning of the paragraph and
that appropriate changes would be made to the draft.
Commissioner Trippler asked that "walking and biking" be added to the last paragraph of Transit
Policies on page five before "bus usage".
Commissioner Fischer suggested "and pedestrians" be added after "bicycles" in the second line of the
third bullet on page two.
Commissioner Pearson said "should" in the first sentence of page seven infers that the city does not
work closely with Ramsey County and could be replaced with "should continue to work closely". It was
agreed to this change.
Comrnissioner Fischer said "try to" be added before "limit" in paragraph seven on page seven.
Comrnissioner Trippler suggested "the use of impervious surfaces and" be added after "encourage" in
the first sentence of paragraph ten on page seven. .
The verbiage in the last sentence on page seven was discussed and requested it be replaced with
rnore user-friendly language.
Mike Martin explained all of the maps that the commission is given at these meetings are available on
the city's website for public access.
Planning Commission
Minutes of 07-01-08
-3-
Mike Martin explained a land use discussion point was brought up at the last comrnission meeting
about parcels currently being guided low density residential, even though they may be an acre or
larger in size and whether this is the proper designation. Mr. Martin said there are approximately 350
parcels or three percent of the city that this currently affects. Mr. Martin said rnany of these parcels are
unique in shape. Mr. Martin also explained many of the parcels are located in wetlands, which would
require extra regulation in addition to the zoning code with any proposed development. Mr. Martin said
the neighboring parcels' designations should also be considered.
Mr. Martin said under the consultant's analysis, finding where these parcels are located and what the
situation is surrounding these parcels, it would be best to keep these parcels under the low density
residential designation.
Mr. Martin explained that protecting the character of a neighborhood such as lot widths or setbacks is
done through zoning and not through the land use designation.
City planner Ekstrand explained the upcoming meeting schedule mentioning there will be an additional
planning commission meeting scheduled on July 29 at 7 p.rn. for further review and discussion of the
land use plan update, a city council workshop on Monday, July 7 from 5-7 p.m., and a public hearing
for the comprehensive plan update tentatively scheduled for August 19 with the planning commission.
VII. UNFINISHED BUSINESS
None
VIII. VISITOR PRESENTATIONS
None
IX. COMMISSION PRESENTATIONS
. June 9 Council Meeting: Mr. Boeser reported on this meeting.
. June 23 Council Meeting: no planning commission items
. July 14 Council Meeting: Mr. Martin will attend.
. July 28 Council Meeting: Mr. Walton is scheduled.
X. STAFF PRESENTATIONS
a. TIF Review Process
The planning commission criteria required for this proposal has been satisfied and therefore, the
planning commission does not need to review the Gethsemane TIF proposal.
b. Special Meeting: July 29 for Continuing Comprehensive Plan Update Discussion
An additional July 29 planning commission meeting has been scheduled for further discussion.
c. Summer Tour Followup
The commission discussed the recent summer city bus tour.
XI. ADJOURNMENT
The meeting was adjourned at 9:00 p.m.
MEMORANDUM
TO:
FROM:
SUBJECT:
LOCATION:
DATE:
Acting City Manager
Tom Ekstrand, Senior Planner
St. John's Hospital Expansion-PUD Revision
1575 Beam Avenue
July 8, 2008
INTRODUCTION
Project Description
HealthEast is requesting approval of plans to enlarge the St. John's Hospital campus.
The proposed expansion includes the following:
. Adding two stories onto the Ambulatory Care Center for an expanded floor area
totaling 60,000 additional square feet.
. Adding two stories onto the Maternity Care Center/Emergency Department for an
additional 35,300 square feet of floor area.
. Adding an additional parking level onto the parking ramp with 107 more parking
spaces.
. Adding 150 surface parking spaces.
Refer to the attached project narrative and plans.
Requests
The applicant is requesting approval of:
. A conditional use permit (CUP) revision to expand their facility. City ordinance
requires a CUP for hospitals.
. Site and architectural plans.
Number of Votes ReQuired
Both requests require a 3/5s vote for approval.
DISCUSSION
Planned Unit Development
Staff finds no problem with this proposal from a use standpoint. The proposed
expansions comply with the findings required for approval of a CUP.
Architectural and Site Considerations
Buildinq Desiqn and Materials
The proposed parking ramp addition will be constructed of precast concrete panels and
would match the existing ramp.
The MCC/ED (maternity care center/emergency department) addition will be primarily
constructed of brick to match the existing facility and also have metal panels and glass
detailing. The ACC (ambulatory care center) addition would be metal and glass.
All design elements would be attractive and compatible with the existing architecture.
Parkinq
There are no minimum parking requirements for a hospital. The applicant is providing
additional spaces to fit their expansion needs.
The applicant is proposing to stock pile dirt on the west side of Kennard Street east
between the proposed surface parking lot and the street. This area will be used for
additional parking space as needed. This dirt pile would be in this location until then.
This dirt pile will essentially look like a six-foot-tall berm and should be planted to be
more aesthetically pleasing. Staff feels that this berm should be seeded with a mowable
turf to appear maintained and landscaped and also be planted with some trees and
shrubs for the same aesthetic reason.
Traffic Impacts
The city conducted a traffic analysis for this area in 2003 prior to the construction of St.
John's Boulevard and the improvements that took place on Kennard Street and
Hazelwood Street. These area streets have been constructed to accommodate any
expanded development in this area as well as the proposed hospital expansion.
Landscapina and Tree Replacement
Staff has evaluated the landscaping and tree removal/replacement plan. The proposal
meets city requirements. The only suggestion staff has, in addition to that noted above
under Parkina. is that the north side of the proposed parking lot should be planted with
some trees for the nearby town homes.
The screening ordinance requires that parking lots be screened by a six-foot-tall, 80
percent opaque buffer when there are abutting homes. The elevated slope to these
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town homes serves to provide a visual separation already, but staff recommends that the
applicant plant some trees in this area for some additional buffering.
Site Liqhtina
The photometric plan shows compliance with the required maximum of .4 footcandles of
light intensity at property lines. The existing parking lot lights and parking-ramp lights
are all on elevated poles. Staff does not know the height of these light poles, but the
code would require a maximum of 25 feet for new lights. The existing lights are
recessed shoe-box type of fixtures. These are a good style for keeping down light glare
and limiting light spillover. The new lights would match this style of fixture.
Trash Storaqe
The hospital currently stores their trash compactors on the south side of the building. If
there are any dumpsters that would be stored out doors, the code would require they be
kept in a screened area.
City Department Comments
Enaineerina Comments-Easement Vacations Needed
Refer to the attached engineers' report by Steve Love, staff engineer with the city dated
July 8, 2008. Other than the routine comments and requirements relative to the plans,
Mr. Love has found that the proposed MCC/ED addition would lie within three existing
easements. These are a water main easement, a storm sewer easement and a ponding
easement. Refer to the attached map.
Staff has reviewed this matter with the applicant and they understand that they will need
to submit a proposal to vacate these easements. This process requires a public hearing.
Therefore, the planning commission cannot review this request the same night as the
public hearing for the CUP revision. Staff will bring this request back for the planning
commission's consideration after a complete review by the city's engineering department
as to the public need for these easements. The CUP approval should, however, be
conditioned upon the city council vacating these easements if it is determined to be in
the public interest.
Buildina Official's Comments
Dave Fisher, Maplewood's Building Official, gave the following comments:
. The applicant should provide a building tour to the building-inspection staff prior to
permit application.
. The city will require a building-code analysis when plans are submitted for the
building permits.
. Soil conditions must be verified.
. The building must bed fire sprinklered.
3
. Retaining walls over four-feet-tall are required to be designed by a registered
Minnesota design professional with a signature on plans when submitted to the
building staff for approval.
. A preconstruction meeting is recommended with the building staff, contractor and
project manager.
. There may be SAC, WAC and PAC charges required for this expansion.
Police Comments
Lieutenant Kevin Rabbett reviewed this proposal and stated that the proposed
expansion poses no public safety concerns.
Fire Marshal
Butch Gervais, assistant fire chief and fire marshal, reviewed the proposal and requires
the following be provided:
. Fire protection per code
. Fire alarm system per code
. A 20-foot-wide fire department access road
. A fire department key box (order from AC/FM)
. Annunciation panel at the main entrance
. Proper marking of fire protection room and fire alarm room
RECOMMENDATIONS
A. Adopt the resolution approving a conditional use permit revision for St. John's
Hospital. Approval is based on the findings required by ordinance and subject to the
following conditions:
1. All construction shall follow the approved site plan. The planning staff may approve
minor changes.
2. The proposed construction must be substantially started within one year of council
approval or the permit shall become null and void.
3. The city council shall review this permit in one year.
4. Compliance with the city's engineering report by Steve Love dated July 8, 2008.
5. The applicant shall apply for the vacation of the ponding, storm sewer and water
main easements that would lie beneath the proposed MCC/ED addition. The city
shall not issue a building permit for this addition unless the city council first vacates
these easements.
4
B. Approve the plans date-stamped June 11, 2008, for the proposed building and
parking ramp additions and surface parking expansion for St. John's Hospital,1575
Beam Avenue. Approval is based on the findings for approval required by ordinance
and subject to the developer doing the following:
1. Repeat this review in two years if the applicant has not obtained a building permit by
that time. After two years this review must be repeated.
2. Obtain a conditional use permit from the city council for this expansion.
3. Obtain the vacation of the storm sewer, water main and ponding easements which
would be in the location of the proposed MCC/ED addition before the city may issue
a building permit for that addition.
4. Comply with the requirements of the engineering report by Steve Love dated July 8,
2008.
5. The applicant shall install in-ground lawn irrigation in formal landscaped areas. The
earthwork-adjustment berm and the northerly hillside area exempt.
6. Obtain any necessary permits from the RamseylWashington Metro Watershed
District.
7. All work shall follow the approved plans. The city planner may approve minor
changes.
8. All pole-mounted site lights shall comply with the 25-foot height maximum.
9. Submit a revised landscaping plan for staff approval showing:
. Trees and shrubs on the earthwork-adjustment berm along Kennard Street. This
berm shall be mowed and maintained.
. Trees on the north side of the proposed new surface parking area.
10. Before obtaining a building permit, the applicant shall provide an irrevocable letter of
credit in the amount of 150 percent of the cost of completing landscaping and other
site improvements. This irrevocable letter of credit shall include the following
provisions:
. The letter of credit must clearly indicate that it is an irrevocable letter of credit in
the name of the City of Maplewood, payable on demand, to assure compliance
with the terms of the developer's agreement.
. The letter of credit must allow for partial withdrawals as needed to guarantee
partial project payments covered under the terms of the letter of credit.
5
. The letter of credit shall be for a one- year duration and must have a condition
indicating automatic renewal, with notification to the city a minimum of 60 days
prior to its expiration.
6
CITIZEN COMMENTS
Staff surveyed the 296 property owners within 500 feet of this site for their comments.
There were nine replies. One person had "no comment," six were in favor and two,
though not stating they are opposed, listed several concerns with this expansion.
In Favor
1. A good added feature would be a sidewalk from Hazelwood Street to the hospital.
(Cardinal Pointe resident, 3003 Hazelwood Street)
2. I have no objections to this proposal. I believe any additions to St. John's would be a
plus for Maplewood. (Don and Julie Shiek)
3. This expansion should take place. (Fuhrmann, 3041 Germain Street)
4. HealthEast St. John's is a real asset to our community. We need to support it!
(Cardinal Pointe resident, 3003 Hazelwood Street)
5. Go for it! (Cardinal Pointe resident, 3003 Hazelwood Street)
6. Refer to the letter from IRET, International Real Estate Trust.
Concerns
1. Refer to the letter from Raymond and Arlette Watts. The concerns noted were those
of traffic increase and driver speed on Hazelwood including both that of both general
traffic and ambulance use. .
2. Refer to the letter from Sarah and Steve Shroyer. The concerns noted here were
increases in site lighting, construction noise, traffic increase and speeders and litter.
7
REFERENCE INFORMATION
SITE DESCRIPTION
Site size: 28 acres
Existing Use: St. John's Hospital Campus
SURROUNDING LAND USES
North: The Cottages at Legacy Village and Legacy Village Town Homes
South: Beam Avenue, Maplewood Professional Building and Maplewood Cancer Center
East: Kennard Street and Birch Run Station
West: Hazelwood Street and Holiday Station Store
PLANNING
Land Use Plan: BC (business commercial)
Zoning: BC
APPLICATION DATE
The city received the applicants' requests on June 11, 2008. Since then there have
been several extensions to the review schedule all of which have been in accordance
with the statutory requirements for review extensions. The de'adline for would have been
August 10, 2008. Staff extended this review an additional 60 days under the provisions
of state statute. The reason for the extension is because of the need for the study of the
easement vacations and the needed process of publiC meetings. The extended deadline
for approval by the city is now October 10, 2008.
p:sec3\St. John's Expansion 7 08
Attachments:
1. Land Use Plan Map
2. Zoning Map
3. Proposed Expansion Plan
4. Site Plan
5. Applicant's Project Narrative dated June 6, 2008
6. Engineering Report dated July 8, 2008
7. Survey-Response Letter from IRET dated June 18, 2008
8. Survey Response from Raymond and Arlette Watts
9. Survey-Response Letter from Sarah and Steve Shroyer dated June 23, 2008
10. CUP Resolution
11. Plans date-stamped June 11,2008 (separate attachments)
8
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Attachment 5
Submittal to City of Maplewood
Conditional Use Permit Revision
Community Design Board Application
Jnne 6, 2008
Project:
Healtheast St. Johns Hospital
1575 Beam Avenue, Maplewood, Minnesota 55109
Contact:
Anthony F. Thomas, AlA, NCARB
651-232-4691
Project Narrative:
(.
This project is for the expansion of the HealthEast St. John's Hospital and consists of four
components as outlined in the Project Key Plan,
1, ACC Vertical Expansion: Two stories are being added to the existing two-story
Ambulatory Care Center (ACe). This addition consists of two floor plates of 30,000
SF each for a total addition of 60,000 SF. The new third floor adds 32 beds, and the
new fourth floor will be shelled initiitlly with the capacity to add 32 future beds,
2, MCC/ED Horizontal Expansion: A two story addition to the Maternity Care
Center (MCC)/Emergency Departtnent (ED) will consist of 17,000 new SF for the
ED and an 18,300 SF addition to the MCC, for a total addition of 35,300 new SF.
The addition to the MCC will add 11 beds and the addition to the ED will add 10-
14 exam rooms, This portion of the project also includes a remodeling of 5,850 SF
within the MCC and 13,500 SF within the ED.
3. Structured Parking: One new level of parking is being added to the existing
parking deck to accommodate 123 new parking spaces.
4. Surface Parking: A new surface parking lot for 150 parking spaces is being added
to the northeast comer of the site. This portion of the work is approximately 3.29
acres.
St. John's Hospital is a long term resident of Maplewood and provides a critical service to
the city and the region, The addition will not change the use or purpose of the campus, but it
will provide the space necessary to better provide the community with appropriate services.
The new additions will be compatible in design and materials with the existing catnpus. The
Parking ratnp elevations will be of a precast concrete panel to match the existing panels. The
ACC/ED addition will be primarily constructed of brick to match the existing facility with
metal panel and glass. The ACC addition will be metal and glass.
HealthEast St. Jolin's Hospital
June 6, 2008
Page 2 of2
As a result of the MCC addition, the corner of Beam and Hazelwood is being modified,
which in turn helps to better define the intersection and solidify the corner. A new retaining
wall, that is compatible with the architectw:e of the building, will replace the existing
retaining wall in addition to providing low plantings that maintain site lines.
Public Access to the site will remain off Hazelwood Street. There will be no change to the
emergency access to the site.
Landscape screening is being provided as required by the zoning code. The project complies
with the Ramsey Washington Metro Watershed District requirements for water quality and
quantity, including the provision of a rain garden. We are designing the new storm system to
match flows to the existing storm system sewer. New fire and domestic water mains are
proposed from Hazelwood to accommodate the MCC addition, We will work with the city
on the preferred connection point for the sanitary sewer.
The city council acted on several requests for this property on May 12, 1997 for the approval
of a conditional Use Permit. These included setback variances for the parking deck and for
an open parking lot along Hazelwood Street. These approvals did not set a height limit for
the parking deck, so the vertical addition to the ramp complies with the previous CUP. No
other variations from the city code are being requested for this project.
Attachment 6
Cit'y of Maple wood
Enl!:ineerinl!: Plan Review
PROJECT:
PROJECT NO:
DATE:
REVIEWED BY:
Ste Jonn's Hospital Expansion
08-07
.July 8, 2008
Steven Love, P.E., P.L.S. (Maplewood Engineering Department)
Proiect Summery:
Healtheast St. Johns Hospital is proposing to expand their existing facility located at the
intersection of Hazelwood Street and Beam Avenue. The proposed improvements consist of
adding two stories to the existing t"wo-story Ambulatory Care Center (ACe), adding one new
level of parking to the existing parking structure located along Hazelwood Street, a new
, parking lot located at the northeast corner of the site, and a new two story addition to the
Maternity Care Center (MCC).
Erosion Control Site Plan (CI00)
1) Inlet protection should be added to existing storm sewer catch basins No, 42 and 43 as
shown on sheet 6 of the topographic survey,
2) Inlet protection should be added to existing storm sewer catch basins l{o. 69 and 71 as
shown on sheet 2 of the topographic survey,
3) Inlet protection should be added to existing storm sewer catch basins No, 7, 8, 9, and
10,
4) Wet protection should be added to proposed storm sewer manhole No, 4 and 8 as
shown on sheet C501.
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with the existing curb line,
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Vl v t~d_H l'l.l. .L-".LJ0 l-'vl.Hllt .IV LU allY ~.lto;:; i9G 1. <::> u-. _ i5''!.l u;:;a_Ull!:) a >J 'ILL -'- 1. t!l(H Will
need to be onsite at all times during construction,
7) Describe measures of onsite dust control (i,e.. ..,water as needed),
8) IdentifY the quantity of materials to be imported or exported from the site (cu-yd),
9) IdentifY locations and provide details for concrete washouts.
10) Identify locations for equipment/material storage, debris stockpiles, vehicle/equipment
maintenance, fueling, and washing areas, Address measure to contain area and specify
that all materials stored on site shall have proper enclosures and/or coverings.
11) Identify erosion and sediment protection on slopes and sediment controls at top and
toes of slopes and base of stockpiles,
12) The following verbiage shall be added to the plan:
"Effective erosion and sediment controls shall be in place prior to any storm events, "
Failure do such shall result in the deduction of escrow funds (the city requires the
developer or contractor to post escrow prior to issuance of the grading permit), The
funds will be deducted at the discretion of the city inspector upon notice to the
developer or contractor,
Site Demolition Plan (C200)
1) Show general area of removal for installation ofthe proposed water main across
Hazelwood Street.
2) The existing concrete apron entering the site at the southwest corner off of Hazelwood
will need to be saw-cut or fully removed and replaced to install the proposed water
mains, This needs to be shown on the plans and will need to at minimum meet the
requirements as shown on City of Maple wood detail plate No. 236,
3) The existing 16" water main is not shown on the plan, According to as-built
information the water main runs under the existing concrete entrance to the property on
the west side of Hazelwood Street. If the wet-tap of the e,xisting water main is done as
shown on sheet C501 then work would need to be done on the gas station entrance and
should be shown on the plan. Add the existing 16" water main to all plans,
4) The curb removal along St. John's Boulevard for the new entrance to the proposed
parking addition should be shown. This entrance will need to at minimum meet the
requirements as shown on City of Maple wood detail plate No, 236,
5) The curb and bituminous removal at the east end of the existing north parking lot for
access to the proposed parking lot should be shown.
6) The curb and bituminous removal at the southeast entrance to the existing north parking
lot for the construction of the proposed storm sewer should be shown.
7) The "REMOVE EX-1STlNG RETAINING WALL FROM THIS POINT WEST" note
has two leader lines, Please check and see if one of these should be removed,
8) Add note 10 from sheet C500 to general notes,
9) Add the following note to general notes:
a) SEE SHEET LlOO FOR TREE REMOVAL DETAILS.
b) SEE SHEET C501 FOR UTILITY REMOVAL DETAILS,
c) REPLACE AND REPAIR DISTURBED CONCRETE CURB AND GUTTER,
DRIVEWAY APRONS, AND BITUMINOUS AREAS PER CITY OF
MAPLEWOOD STANDARDS AND SPECIFICATIONS.
SITE GRADING PLAN (C400)
1) Revise tie in contours for proposed rain garden,
2) Show location and elevation of emergency over flow for proposed rain garden, All
rainwater gardens and infiltration basins shall have emergency overflow swales line
with a permanent erosion control blanket extending to the downstream receiving
water/drainage structure,
3) Label high water level elevation for proposed rain garden,
4) Revise the 918 contour for the north drive entrance to the proposed parking lot.
5) Add the following note to the rain garden construction notes:
a) AVOID COMPACTING INFILTRATION AREAS BY LIMITING THE USE
OF HEAVY EQUIPMENT IN RAIN WATER GARDEN BASIN AREA
DURING CONSTRUCTION. EXCAVATION TO FINAL DEPTH SHALL
OCCUR PRIOR TO INSTALLATION OF BEDDING MATERIAL AND
AFTER MAJOR GRADING ACTIVITIES.
6) Provide a grading plan for proposed parking structure showing how the ramp ties into
the existing drive, slope of the ramp, and drainage of proposed parking deck
MCC GRADING PLAN (C401)
1) Sheet No, 2 of the topographic survey shows a ponding easement per Doc, No,
2276522, a water main easement per Doc, No. 2608921, and a storm sewer easement
per Doc, No, 2276525 at the southwest comer of the site, These easements are shown
only on the topographic survey, but do not appear on any of the proposed construction
plans. The proposed MCC addition lies within all three of these easements. There
needs to be a plan showing how the developer plans to deal with these easements. The
plan should show if the easements are to be vacated and any new easements that are
needed as the result of vacating the easements,
2) The plan should show approximate removal and replacement of materials for the water
main crossing Hazelwood Street and wet-tapping of the existing 16" water main,
3) Verify that the proposed grades shown north of the transformer and south of the walk
are 3: 1 or less, If a 3: 1 maximum slope cannot be obtained then a small retaining wall
may be necessary, All 3: 1 slopes require an erosion control blanket and locations shall
be clearly shown on the plans,
4) Indicate on the plans if the finished floor elevation is the lowest floor elevation,
5) Show proposed striping of parking lot west of the MCC addition, If there are proposed
handicapped parking areas these stalls need to meet ADA standards, A ramp location
should also be shown for the walk if there are proposed handicapped parking stalls,
6) Proposed curb at the east match in point is missing and should be added.
7) Add notes to the drawing at key locations showing elevation of top of retaining wall
and bottom of retaining wall, All retaining walls over 4 feet high need to be engineered
with a fence located at the top of the wall and the designs need to be submitted to the
City of Maple wood building department, Provide a typical detail of the proposed
retaining wall on the plans,
8) Add symbol for AD for area drain to the legend,
9) All existing easements that are not vacated and all proposed easements need to be
shown on all of the proposed plan sheets,
SITE UTILITY PLAN (C500)
1) Add note showing quantity of rip-rap to be installed,
2) Add structure elevation information to the note for the storm #12 outlet structure
including drain tile invert elevation, Shop drawings for this structure will need to be
submitted for City of Maple wood review,
3) Add construction notes for the structures that lie between proposed storm structure #12
and existing storm structure #43,
4) Add length of pipe to all the proposed pipe notes,
5) Note that existing structure #43 is to be core-drilled and add existing structure
elevations,
6) Proposed storm sewer structure No, 9 is shown as a 2'x3' structure, A 2'x3' storm
sewer structures should only be used at the start of a storm sewer system. All junction
point structures should at a minimum be a 48" diameter round structure. Proposed
structure No, 9 will need to provide water quality treatment for the storm water entering
the proposed rain garden. At a minimum proposed structure No, 9 should include a 3
foot sump and provide skimming for floatable debris to prevent the rain garden bedding
material from becoming plugged,
7) Sheet C400 indicates that drain tile will be installed in the proposed rain garden,
Include this and appropriate construction notes on sheet C500.
MCC UTILITY PLAN (C501)
1) Show the existing water main location and size on the west side of Hazelwood Street.
2) Label all proposed top nut hydrant elevations,
3) The pipe leaving the proposed storm sewer structure #1 is labeled as a 21" RCP, The
existing pipe is labeled as a 27" RCP and the drainage calculations show the proposed
pipe being a 27" RCP. Verify the proposed size and revise the note, This note needs to
be revised to say that "THE CONNECTION TO TIIE EXISTING STORM SEWER
PIPE SHALL BE DONE PER CITY OF MAPLEWOOD STANDARDS AND
SPECIFICATIONS, TillS CONNECTION WILL NEED TO BE INSPECTED AND
APPROVED BY THE CITY OF MAPLEWOOD",
4) The note for the proposed 12" storm sewer pipe leaving proposed structure No, 8 and
connecting to the existing 12" storm sewer pipe needs to be revised to say that 'THE
CONNECTION TO TIIE EXISTING STORM SEWER PIPE SHALL BE DONE PER
CITY OF MAPLEWOOD STANDARDS AND SPECIFICATIONS, TillS
CONNECTION WILL NEED TO BE INSPECTED AND APPROVED BY TIIE
CITY OF MAPLEWOOD",
5) Include length of pipes for all proposed storm sewer and sanitary sewer pipe,
6) Label length and size of all proposed water main pipes,
7) Label size and type of all existing sanitary sewer and storm sewer pipe.
8) Label size and type of all existing water main pipe.
9) Label finished floor and lowest floor elevations for the proposed addition,
10) The plans show the following note:
a) TIIE LOAD ON TIllS SANITARY LINE SHOULD BE DETERMINED. A
CONNECTION TO MAIN SANITARY IN BEAM AVE. MAY BE
REQUIRED,
This information needs to be determined and the plans revised respectively. The
existing public sanitary sewer system lies on the south side of Beam Avenue and if a
new connection is required this may prove to be very costly,
11) Note the type of structure to be used on all proposed structures,
12) Provide reference detail number for proposed area drain #1
13) Provide plumbing drawing number for water services connection notes.
14) Midway on the proposed 18" RCP storm sewer pipe from proposed structure #6 to
proposed structure #5 there appears to be a pipe connecting from the north, VerifY if
this is a pipe or some other type of line. If it is a pipe provide construction information
and detail on how the pipe is connected, Currently no proposed structure is shown, At
a minimum a 48" diameter round structure is required to be used at all junction points.
15) The proposed sanitary sewer line from the proposed sanitary sewer manhole # 1 to
existing sanitary sewer manhole #95 is shown as a 6" CIP and connection to the
existing manhole #1 by a outside drop. Per the City of Maple wood detail plate No, 401
the drop pipe is to be DIP, and the pipe running from proposed sanitary sewer manhole
to the existing manhole could be PVC or DIP if there is a structural load issue, CIP
should not be used for the sanitary sewer line,
16) All casting frames and lids should match City of Maplewood detail plate No, 301.
SITE DETAILS (C900)
1) Revise all details to match City of Maple wood standard plates. These detail plates are
available in CAD or PDF format upon request,
SITE DETAILS (C902)
1) Revise all details to match City of Maple wood standard plates, These detail plates are
available in CAD or PDF format upon request.
2) Add structure over flow elevation and drain tile design information including length,
size, slope, and depth to detail 13,
SITE REFERENCE AND TREE REMOVAL PLAN WITH SIGNIFICANT TREE
OVERLAY (Ll 00)
1) The plan shows that less then 20% of the significant trees on the property are to be
removed, Therefore the trees are to be replaced on a one to one basis. A total of 13
trees are shown to be removed, A total of 13 replacement trees of2.5 caliper inches or
larger will be required. The planting plan calls out a total of 45 proposed trees which
well exceeds our requirements.
2) On sheets LlOO and L200 the minimum replacement tree size is shown as 2" caliper.
This should be revised to be 2,5" caliper inches or larger.
3) Staff would encourage some trees to be planted along the top of the earthwork
adjustment berm located at the northeast corner of the site.
BOUNDARY & TOPOGRAPHIC SURVEY (2)
1) Existing water main on the west side of Hazelwood Street is not shown.
2) Verify if wetlands exist on site. Ifwetland exist they must be delineated and show
delineator and date on plans, Ifwetlands do not exist then add a note must be added to
the plans stating so,
DRAINAGE CALCULATIONS
1) The drainage calculations need to be submitted using a TR-55 or HydroCad storm
routing model.
2) Revise the storm sewer pipe calculations for a 10 year 4.2 in/hr event.
3) All rainwater gardens and infiltration basin shall be excavated to final bottom elevation
after major grading is complete. Care must be taken to avoid compaction of bottom
area in order to avoid losing the infiltration characteristics of the soil. If the rainwater
garden or infiltration basin does not perform as designed,' it is the responsibility of the
developer's engineer and/or contractor to correct the problem. The city will withhold
all escrow monies, and may coordinate with the city building department to withhold
certificate of occupancies for buildings on the development site, until the proper
functioning of the rainwater garden and/or infiltration basin is restored,
4) The developer's contractor shall contact City of Maplewood Engineering Department
for inspection of all infiltration basin, rain garden, and native seeding and planting
activities,
5) Provide a storm water narrative detailing the exiting conditions, proposed conditions,
overall existing pervious and impervious calculations, impervious removal calculations,
and overall proposed pervious and impervious calculations,
AGENCY SUBMITTALS
I) All necessary plans and permit applications need to be submitted for approval to the
MPCA, Ramsey-Washinl:,'ton Metro Watershed District, Saint Paul Regional Water
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project. Copies of all permit approvals shall be provided to the City of Maple wood,
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treatment devices (list devices i,e" , ,sumps, basins, ponds, etc). The city shall prepare
this agreement.
MISCELLANEOUS
I) Benchmark information should be shown on all grading and utility plans,
2) Provide soH boring rcport including at least one boring at all rain garden and infiltration
basin areas to a depth of 15 feet, The soil boring log will dictate the infiltration rate to
be used for infiltrating the first 1.0 inches over the nc\v or disturbed hnpcrvious areas.
If no boring information is provided then an under-drain system must be designed and
shOvvn on the plans and shaH connect into the underground storm pipcs and shaH filtrate
the first 1.3 inches over all new or disturbed impervious areas,
3) Provide a proposed site plan showing the following information:
a) Current zoning and setback requirements,
b) Parking calculations,
c) Proposed striping and handicapped parking locations.
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ways,
e) Dimension of all proposed curb radii.
f) Shovv' turning radius of Jargi,."':st anticipated vehicles using the proposed site. For
example will a fixed axle vehicle like an ambulance need to and or be able to
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MCC expansion without running over the island.
4) The developer or project engineer shall subrnit a copy urthe IvfPCA's construction
stoml water permit (SWPPP) to the city before the city will issue a grading permit for
this project.
,...... ,",1 1 . 1 1 . l' 1 11 t 1', ~ 1 t .1 '" , l' -' ........
J J .I. fie oaSlil Hiiluscaplng ue;$lgn snail Lie SUuject to approval 0Y Tile eny S ilaIUranSl, DUllY
Gaynor,
6) Building permit will be required for all proposed buildings and parking structures,
Attachment 7
IRET
INVESTORS REAL ESTATE TRUST
a real estate investment trust
lRET PRO PERTIES
a north dakota limited partnership
June 18,2008
Mr. Tom Ekstrand
Senior Planner
City of Maplewood
Office of Community Development
1830 County Road BEast
Maplewood, MN 55109
RE: St. John's Hospital Expansion Proposal
Dear Tom,
Thank you for the opportunity to provide input as to the HealthEast
proposed expansion of the St. John's Hospital campus.
IRET Properties owns the adjacent medical building and welcomes the
expansion of services which will enable St. John's to better serve the long term
clinical and emergency care needs of Maple wood and surrounding communities.
Additionally the parking upgrades that Healtheast is proposing would serve to
address the long term parking requirements that can be expected with this and
potential future expansions at this hospital.
We would be in full support ofthis project and would encourage the
Planning Commission and City Council approves the project as proposed.
Please contact me with any questions at (612) 710- 4759.
{~IY'~
1!:A~ntorf CP~
Senior Asset Managv
Cc: C. Greenberg
T, Wentz Jr.
...-------
-10050 Crossrown Circle, Suite 105 . Eden Prairie, MN 55344
Phone 952.401.6600' Fax 952.401.7058
Ema.il: info@ireLcom . vvww.irets.com . Nasdaq Symbol: IRETS
June 13, 2008
RAYMOND WATTS
ARLETTE WATTS
3004 COTTAGE LN N
MAPLEWOOD, MN 55109
Attachment 8
Together We Can
ST. JOHN'S HOSPITAL EXPANSION PROPOSAL
This letter is to get your opinion on the proposed expansion of the St. John's Hospital
campus. HealthEast is proposing the following at St. John's:
1. A second-floor addition to the parking ramp
2. Additional surface parking in the northeast corner of the property
3. A second-story addition to the ACC unit, and
c, 4. Renovation and expansion of the ER unit
Please refer to the CiPplicant's letter for a thorough explanation.
I would like your opinion to help me prepare a recommendation to the planning
commission and city council. Please write your opinion and comments below and return
this letter and any attachments on which you have written comments by June 25, 2008.
If you would like further information, please call me at 651-249-2302 between 8 a.m. and
4:30 p.m. You can also .email meattom.ekstrand@.ci.maplewood.mn.us. I will send you
notices of the public hearing on this request when it is scheduled. Thank you for your
comments. I will give them careful consideration.
/' ()l b->>--
~ 10 ; TOM EKSTRAND - SENIOR PLANNER j /
fr : /J1-. f A/;dZ'1 ~ /lUr. d."e/dffJ
I have nO Cui "ments:
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OFFICg OF COMMUNITY DEVELc!PMENT . 651-249-2300. . FAlC: 651-249-2$19
CITY OF MAPLEWOOD
1830 COUNTY ROAD BEAST
MAPLEWOOD, MN 55109
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Attachment 9
June 23, 2008
TO: Tom Ekstrand, Senior Planner
Office of Community Development
City of Maplewood
1830 County Road BEast
Maplewood, MN 55109
Fax 6512492319
RE: StJohu's Hospital Expansion Proposal
From: Steve and Sarah Shroyer, Cottage of Legacy Village homeowners,lresidents
3006 Cottage Lane North
Maplewood, MN 55109
Thank you for the opportunity to provide feedback abont the proposed expansion of HealthEast St John's Hospital.
Several key areas of concerns are listed below, with potential solutions as well.
1. Lights: The additional proposed levels of building and the additional proposed level of parking ramp. will
increase the height and number of lights viewable by the homes along the berm extending east to west
" between Kennard and Hazelwood. A reasonable solntion wonld be to landscape near the top ofthe south side
of the berm (the hospital side of the berm) with a line, or zigzagging lines, of decent sized trees, placing the
trees so the mass of the tree blocks the light from the additional parking light fixtures and additional building
lights from being viewable by windows on the first and second floors of the homes facing the hospital over
the berm. Some of the existing lights are really bright, and the proposed expansion will result in more lights
viewable by the homes. Utilizing more down pointing lights, instead of horizontal pointing lights, would help
as well,
2. Sounds: Adding more surface and ramp parking will increase the number and proximity of souuds heard by
the homes along the berm. This includes cars entering and leaving, car alarms that go off (heard frequently
by the homes over the berm currently), as well as snow plow trucks plowing the existing parking lots in the
middle of the night and the reverse beeping of the plows in the middle of the night. The addition of a line or
line of decent sized well placed trees, as suggested above in the "lights" concern, would assist in dampening
the sounds heard by the homes along the berm.
3. Traffic and Speeders:
a, Saeed limit siens: Larger hospital facilities and more parking will bring more traffic entering and
leaving 0 ff the Hazelwood en trance/exit, as well as 0 ff the Kennard entrance/ exit. This increases the
concerns residents along Hazelwood have about speeders due to more drivers - and more potential
speeders. We notice that currently there is only one posted 30 mph speed limit sign, and it is
currently poorly placed on Hazelwood as it is before the entrance and only viewable to those going
north on Hazelwood from or across Beam. Reasons the sign is easy to miss there include: I) the
distraction of cars turning in and out of the FreedomMart, 2) traffic merging from the right from
Beam, 3) traffic turning in and out of the emergency entrance, and 4) traffic coming in and out of
the parking ramp. It is concerning that traffic entering and exiting via the main entrance on
Hazelwood exit is not able to see a posted 30mph speed limit sign within a few hundred yards or so in
either direction they go. The hospital is open 24 hours and those coming and going may miss the oue
speed limit sign there for the reasons listed, and if they aren't given a speed limit sign, they go much
faster than 30 mph. We know from experience that most drive along Hazelwood at a much higher
speed, perhaps 40 mph or more, we have seen cars fly by up the hill from Beam at as much as 50-60
mph sometimes. We request that the city move the current 30 mph speed limit sign on the east side
of Hazelwood from before the entrance to just past the entrance on St John's Blvd, maybe halfway
to Cottage Lane, and the add an additional speed limit sign on the west side of Hazelwood as one goes
down the hill towards Beam, Beam is 45 mph, County Rd D is 35-40 mph, aud with the addition of
Costco nearby and the traffic that will soon add, we need to work harder to get cars to see the 30
mph signs and to go 30 mph along Hazelwood.
b. Three way sloo at Hazelwood and Lezacv Parkway: To handle the additional traffic, curb the
speeding and increase safety for residents that cross Hazelwood to get to the Bruce Vento trail, go
.~~
....---
walking, biking, etc" we request that the intersection of Hazelwood and Legacy Parkway be turned
into a three way stop, with traffic going in both directions on Hazelwood having to stop - as traffic
coming down Legacy Parkway currently has to. The addition of a three way stop at the intersection
of Hazelwood and Legacy Parkway would also help to slow down the traffic that currently ignores the
15mph tight turn as one goes towards Country Rd D past Legacy Parkway on Hazelwood. We have
heard cars squeal tires and slam on breaks as they hit that tight turn.
c, Hosvital vedestrians on vrivate roads/walkways: In addition to stray cars that enter the private road
of Cottage Lane (to then have to turn arouud as it is a dead end), we have seen (as well as stopped
and talked to) hospital staff aud hospital visitors on foot that are walking along on oUI private drive
or on oUI walkway in front of the five detached homes just over the berm, This is already a concern
so increased visitors and traffic will probably worsen this problem. A notice or reminder through a
hospital communication to staff and visitors that Cottage Lane (and many of the roads in the
Khov/Town & Country development as well) are private roads/walkways for residents only and they
should look for "private road" written on the street signs.
4. Garbage: Depending on the season and weather, sometimes a significant amount of garbage and debris
(particularly food container items that appear to be from a hospital cafeteria) blows into the drainage area
with trees, as well as then up and over or into the berm and gets stuck in the brush on the berm near the
homes just over the berm. Increased parking lot space that is closer to the berm will bring more cars and
subsequent garbage closer to the berm and homes. We request that a sufficient number of covered garbage
cans be added to assist with this problem, as well as perhaps some "throw it in the garbage, don't litter" signs
on the garbage cans.
The two page proposal included with the letter we received leaves ns with a few questions,
1. What does "landscape screening as required by zoning code" mean? Is what we are asking for more than that?
2. Why is the main access off Hazelwood when it could be off Beam or Kennard, or at least shared with those
streets?
3, What is the timeline for starting? Ending? Total time? Will it be done in stages or all at once?
4. Taking into consideration the close proximity of the homes along the berm, what will the working hours for
construction be?
One last final thought, we can appreciate that the conditional use permit approved in 1997 did not set a height limit
for the parking deck, but with the addition of dozens and dozens of homes right in that area since then, it seems that
approvals in 1997 shouldn't just be granted "as is" anymore, at least not without serious thought to implications of
the homeowners and residents in the immediate surrounding area. This applies to other undeveloped areas such as
the space next to the Freedom Mart and the space at County Road D and Hazelwood. These spaces need to be used in
ways that assist in developing and maintaining the residential look and feel that those of us that selected to buy
homes in the Cottages of Legacy Village and Khov/Town & Country development having been working towards and
hoping for, hoping being the key word here. Weare residents and have made investments in Maplewood, just as
HealthEast St John's Hospital has, and we hope to be able to live quietly, peacefully and safely in the area near the
hospital, and hope the city of Maplewood and St John's Hospital are interested in that as well.
Thank you,
Sarah and Steve Shroyer
sarah.shrover(ZUgmail.com
612418-2293
Attachment 10
CONDITIONAL USE PERMIT REVISION RESOLUTION
WHEREAS, HealthEast applied for a conditional use permit revision to expand St. John's
Hospital.
WHEREAS, this permit applies to the property located at 1575 Beam Avenue, The legal
description is:
The Southwest Quarter of the Northeast Quarter of Section 3, Township 29
North, Range 22 West, Ramsey County, Minnesota, according to the Government Survey
thereof except the following parcels:
The East 40,00 feet of said Southwest Quarter of the Northeast Quarter lying northerly of
the South 660,00 feet thereof,
Commencing at the southwest corner of said Southwest Quarter of the Northeast Quarter,
being the center of said Section 3, said point being marked by a Ramsey County
monument; thence along the west line of said Southwest Quarter of the Northeast Quarter,
North 00 degrees 01 minutes 40 seconds East, assumed basis of bearing, a distance of
703,29; thence on a bearing of East 437.93 feet to the point of beginning; thence continuing
on a bearing of East 264.24 feet; thence on a bearing of South 124,13 feet; thence on a
bearing of West 264.24 feet; thence on a bearing of North 124,13 feet to the point of
beginning,
Subject to easements of record,
WHEREAS, the history of this conditional use permit is as follows:
1. On July 15, 2008, the planning commission held a public hearing. The city staff
published a notice in the paper and sent notices to the surrounding property
owners, The planning commission gave everyone at the hearing a chance to speak
and present written statements. The planning commission also considered the
reports and recommendation of city staff. The planning commission recommended
that the city council approve this permit.
2, On , 2008, the city council considered reports and recommendations
of the city staff and planning commission.
NOW, THEREFORE, BE IT RESOLVED that the city council
described conditional use permit, because:
the above-
1. The use would be located, designed, maintained, constructed and operated to be in
conformity with the City's Comprehensive Plan and Code of Ordinances,
2. The use would not change the existing or planned character of the surrounding
area,
3, The use would not depreciate property values,
4, The use would not involve any activity, process, materials, equipment or methods of
operation that would be dangerous, hazardous, detrimental, disturbing or cause a
nuisance to any person or property, because of excessive noise, glare, smoke,
dust, odor, fumes, water or air pollution, drainage, water run-off, vibration, general
unsightliness, electrical interference or other nuisances,
5, The use would generate only minimal vehicular traffic on local streets and would not
create traffic congestion or unsafe access on existing or proposed streets,
6, The use would be served by adequate public facilities and services, including
streets, police and fire protection, drainage structures, water and sewer systems,
schools and parks,
7. The use would not create excessive additional costs for public facilities or services.
8, The use would maximize the preservation of and incorporate the site's natural and
scenic features into the development design,
9, The use would cause minimal adverse environmental effects,
Approval is subject to the following conditions:
1, All construction shall follow the approved site plan. The planning staff may
approve minor changes,
2. The proposed construction must be substantially started within one year of
council approval or the permit shall become null and void,
3, The city council shall review this permit in one year,
4, Compliance with the city's engineering report by Steve Love dated July 8, 2008,
5, The applicant shall apply for the vacation of the ponding, storm sewer and water
main easements that would lie beneath the proposed MCC/ED addition. The city
shall not issue a building permit for this addition unless the city council first
vacates these easements,
The Maplewood City Council
this resolution on
,2008,
2030 Comprehensive Plan
City of Maplewood
MEMORANDUM
To:
From:
Subject:
Date:
Acting City Manager
Rose Lorsung and Michael Martin, MFRA
Comprehensive Plan
July 9, 2008
INTRODUCTION
The Planning Commission has finished its work on making policy and land use plan changes and has moved into review
and editing mode of the Draft Comprehensive Plan. The Planning Commission will continue its review over the next two
meetings. At the July 15 meeting, the Planning Commission will be reviewing the Surface Water, Sustainability and
Historical Resources chapters, The Planning Commission will review the Parks, Trails and Open Space, and Housing
chapters at its July 29 meeting, The City Council has also started to review draft chapters of the Comprehensive Plan,
On July 7, the City Council reviewed the Introduction, Community Profile, Land Use, Natural Resources, Surface Water,
and Sustainability chapters, The Planning Commission will be briefed at the July 19 meeting on what changes the City
Council have recommended,
DISCUSSION
The City's consultant Short Elliott Hendrickson Inc, (SEH) has prepared the Surface Water plan, which was coordinated
and developed with the City's 2030 Land Use plan, City Staff developed the Sustainability chapter and the Historical
Resources chapter was updated by MFRA with coordination with City Staff. Each chapter will be presented and
discussed, Consultants and Staff will be looking for the Planning Commission to give its thoughts and comments based
on the content of each chapter. As with the last two meetings, the Planning Commission should give Staff and
consultants typos and minor wording issues after the meeting in order to allow for more time for discussion focused on
larger and substantive policy issues.
RECOMMENDA nON
Please review the three chapters before the July 15 Planning Commission meeting. Be prepared to share your thoughts
and comments on each of the chapters, The Final Draft Comprehensive Plan will incorporate the feedback received on
Tuesday. If you have any questions about the comprehensive planning process, please contact Tom Ekstrand, Senior
Planner, at 651-249-2302 or Tom,Ekstrand@ci.maplewood,mn,us.
-~~
ClTYOF.HAPLEIVOOD
2030
COitIPREHI.:NSlVEPL4.N
Preliminary Draft
008
d areas are still under refinement
Has not been reviewed in full by City staff
Maplewood
Surfa" ater
anclgement Plan
City Review DRAFT
June 2008
SEH No. A-MAPLE0807.00
Maplewood
.
M
nnesota
Surface Water Management PI
EXECUTIVE SUMMARY
The City of Maplewood (City) has completed this Surface Water Manage n (SWMP or
Plan) to establish a more functional and up-to-date guide for urface .....' r management
activities throughout the City, This Plan builds on the City'~ . .plan, its.National Pollutant
Discharge Elimination System Permit (NPDES) prografj'l:ar1 on-Degradation Plan and
addresses several key issues related to storm waterma-nag e City is likely to
encounter in the coming years, This executive su .ary p~OVid rief description of the
purpose and basis for this updated Plan, followe presenl,!;!. on of the overriding goals that
were used to guide development of the Plan, T eX!fc"i.ftivei>Ummary closes by highlighting the
key issues the City intends to address as pa ig:P
Ish the framework of a comprehensive program that does
ve the quality of existing water resources within the City,
pment and redevelopment must and will continue well into
or City staff to follow as they evaluate the potential impacts
rces. The Pian will serve as a toolbox for the City that
.water.n urce data at the time it was completed, up-to-date policies
proce'ss to adjust goals and policies as new data is collected and
programs change, With this guidance specific to surface water
as well asl,~:E> roader"",."" 'e provide in the City's Comprehensive Plan, this Surface Water
ent Plan will serve to:
Purpose of the Plan
ovide fortmeuse, management, improvement and protection of the City's surface
aterre'(lfces.
e to the quality of life by preserving and enhancing the high environmental
y of the community
. Protect public investments and private property related to or affected by surface water
. Help to understand the larger context of surface water management issues in relation to
land use and land use policy
. Balance environmental protection and enhancement needs with economic needs and
capabilities
. Meet regulatory requirements
City of Maplewood
Surface Water Management Plan
ES-2
Draft #1 - June 2008
Basis for the Plan
There are two primary programs that establish the regulatory need to update the City's Surface
Water Management Plan, First, Minnesota Statutes, Sections 103B,201 to 103B,255 and
Minnesota Rule, Chapter 8410 comprise the State's Metropolitan Surface Water Management
Program (MSWMP), These Statutes and Rules require the preparation of watershed plans by
watershed management organizations (WMOs) and the preparation of local (i.e" city) w<jt~r
management plans that are consistent with the respective WMO plans, Second,ption
by Council, the policies and standards presented in this Plan become a part of,! overall
Comprehensive Plan, The purpose of the MSWMP is that through policiel:k,~na t
program implementation, goals for proper water and wetland resource rn~'r\'agE1i'Den
realized and water quality can be protected. Through proper planning ", il)'!p'lemen a"""""
informed decisions can be made which allow for the protection and/ncement ofwate'r
quality, prevention of ground water degradation, and reduction of 10 g,
A third regulatory program, very much related to the goals, policie d ds of this Plan,
is the National Pollutant Discharge Elimination System (NPDES) Phase II' """"""""Water Permit
Program (Phase II Program), While this program is not direcll 'ving force,.f6r updating the
City's Plan, similarities between the MSWMP and NPDES' ' ograms are such that the
City intends to realize efficiencies in managing the two ii' ' rps as a single
comprehensive surface water management progra
"":,,~. .-::,
".....00.. .:..'
'.'''.''.V "'<
,_."". :".c-
The NPDES Phase II Storm Water Permit Progs~, l~feoeral0riigulatory program that requires
owners of Municipally Separate Storm Sewer ,8ysterpl'>i:(MS1l'>Jto prepare and implement a
Storm Water Pollution Prevention Program (~\f\!PB 'and<jpply for the permit with the
administrative agency, The Minnesota BQlluti6n ol:t'igency (MPCA) administers the MS4
program in the state, The City sUbmitf,eo'their 0 , , 'permit application and SWPPP on
March 10, 2003, and submitted an,QPoated S\f\!i7'J'1,'in'2006 to comply with the MPCA program
requirements, The City has cOr1')pl~tiid their NPDES program in conformance to the SWPPP
since submittal in 2003, inclu .' " nducting annual public meetings and completing a Loading
Assessment and No degrad eport (November 2007) as required by the MS4 Permit. This
SWMP incorpora e best ent practices (BMPs) that were identified in the City's
2006 SWPPP as endixt Ian and also identifies several specific projects that are
not speCified in t PDE,ogram SWPPP.
Surface watE1,r;;", ag ograms throughout the country, state and locally have seen
significantct'langes in r ears and are expected to continue evolving as the regulatory
program pand and/ange, For example, the impaired waters and Total Maximum Daily
Load aching as far downstream as Lake Pepin, changes to the wetland
cons tion act an shift towards lower impact development approaches will likely have
som oing irppaCt on how Maplewood manages surface waters in the future, One local
exa 'E!"recent adoption of volume reduction and infiltration requirements by the City
as aplewood Mall Area Transportation Improvements (MMATI) project. The City
estab is ed a i-inch infiltration standard for developments and city projects proposed in the area
as a first step towards achieving enhance storm water treatment. The local watershed
organizations soon followed suit in adopting similar i-inch infiltration and volume control
standards,
City of Maplewood
Surface Water Management Plan
ES-3
Draft #1 - June 2008
Plan Overview
The Plan contains an Introduction (Section I), a brief Background and History and description of
the existing physical environment (Section II); specific Goals and Policies (Section III)
developed by the City; specific information regarding key Surface Water Resources within the
City (Section IV) and an Implementation Plan (Section V) that summarizes some of the ongoing
management activities and future projects for the protection and enhancement of the City;~
water and wetland resources, Using the goals summarized in Table ES-1, the PI ,intended
to guide surface water and water resource management activities through ab t .. r 2030,
Table ES-1. Maplewood Storm Water Management
1
Water Quality
2
Runoff
Management and
Flood Control
3
Wetlands
4
Erosion and
Sediment Control
5
Groundwater
6
7
10
Regulatory
Responsibility
Maintain or enhance the water quality,p
waters relative to current conditionsnai1d s
quality improvements,
Preserve, maintain, utilize a
water storage and detentig
and rates of runoff. cOQt(OI ...'..
and to minimize nec:;~$'sary pgblic" . expenditures,
Achieve no net IQ~~'Of V\i\rtJjjhds,dptluding acreage, functions and
values, Where",{pacticaple, imprgVe the functions, values,
biodiversity <jr@l;,'acr.El~ge ofV\iE}f1ands and their buffer areas,
ProtectJi.apacity , orr1),)!\!afer system, prevent flooding and
mai ""water" "preventing erosion and sedimentation from
oc ng. and. isting erosion and sedimentation problems,
ect the qu and quantity of groundwater resources and
elop a cooperative program with.the watershed district to identify
Itration-sensitive areas.
ect the public health, safety and welfare through a
rehensive ISTS ordinance that requires properly designed and
ained ISTS systems,
InCrease public and city official awareness, understanding and
involvement in water and natural resource management issues,
Establish and maintain funding sources to finance surface water
management activities,
Preserve function and performance of public infrastructure through
continued implementation of a maintenance and inspection program,
Develop a city-maintenance plan for the inspection of all ponds,
outlet structures and inlet facilities and consider initiating a pond
delta removal program, Such a program should consider
improvements to reduce sediment loads to ponds, wetlands and
lakes to help prioritize critical improvement areas,
Maintain primary responsibility for managing water resources at the
local level but continue coordination and cooperation with other
agencies and organizations,
City of Maplewood
Surface Water Management Plan
ES-4
Draft #1 - June 2008
Though long term in focus, the Plan has numerous future decision points related to
recommended capital improvements and ongoing inspection, maintenance and monitoring
activities, The Plan was developed recognizing the need for proper land utilization and growth
and, at the same time, emphasizing the need to prioritize management actions and decisions
based on the assigned category of a receiving water body (i.e" lake or wetland).
This updated SWMP addresses each of the required elements in Minnesota Statut!,\s ancjf!Rules
and is consistent with the Metropolitan Council's guidelines for Water Manageme ' "'The
Plan is also consistent with the watershed districts having jurisdiction in portigQ wood:
the Ramsey-Washington-Metro Watershed District (RWMWD); the CapitoM~l>f i hed
District (CRWD); and the Valley Branch Watershed District (VBWD),
Key Water Resources Issues
The criteria set forth in this Plan, as a minimum, establish the degree,
to achieve the City's water quality and water quantity management
applicable regulatory requirements, These criteria are not intended tg'
, design process, but rather provide guidelines to proper developmepfan'
This Plan identifies several key issues related to storm>m~nt that the City is likely
to encounter in the coming years. These issues inclyq'e' me~Jih quirements of
nondegradation standards and impaired waters p~ggram~;{1irtldr: Ihg localized flooding
problems and meeting the challenges of an incr~~sed D~ed fOkrmaintenance of the public and
private stormwater system and coordinating e1f()~s \fIIith'natYJai resource improvement areas to
find more cost-effective approaches, The issy"~:seqi.lElte tg,i\'heed for continued long-term
financial commitments and likely incre'!~.etl fah "e"surface water management program
into the future. '
nction with the City's 2008 update to its Comprehensive
lan, the City is conducting a preliminary evaluation of the
on recent efforts under the National Pollutant Discharge
S), MuOI ally Separate Storm Sewer System (MS4) permit
, g Assessment and Non-Degradation Report (Non-Deg Report)
ber 2007, The Non-Deg Report concluded that
. City will experience a reduction in total phosphorus (TP) and total suspended solids
S) load b*r.!he year 2020, but will experience an increase in the runoff volume,
e reduc;ti&h in loading of TP and TSS through 2020 relates directly to continuing to
plegJIe,Ofthe i-inch volume control standard on new and redevelopment projects,
Volume reduction is a relatively new area to the storm water management arena
while the potential adverse effects still being studied and debated, The most common
impacts cited in connection with the runoff volume increase are a pronounced
degradation of the natural stream banks and more frequent inundation of the wetlands,
No significant issues were known at the time of finalizing the Non-Deg report, Since
completion of the Non-Deg Report, input has been obtained from staff and watershed
representatives that there may be some volume-related issues to address in south
Maplewood and other localized areas,
City of Maplewood
Surface Water Management Plan
ES-5
Draft #1 - June 2008
Relative to impaired waters, Maplewood has twelve waters on the 2008 draft list prepared by
the MPCA and that was submitted to the US Environmental Protection Agency for approval.
Table ES-2 provides a summary of the affected use and impairments for each of these waters,
Table ES-2. Draft 2008 TMDL Listed Impaired Waters in Maplewood
Yes
NutrientlEutroph ication Yes
'^.- Biological Indicators
NutrientlEutro'ph ication Yes
Biological Indicators
Perfluorooctane Sulfonate (PFOs)
in Fish Tissue
Perfluorooctane Sulfonate (PFOs)
in Fish Tissue
N utrientlEutrophication Yes
Biological Indicators
Consumption Mercury in Fish Tissue
Aquatic Consumption Mercury in Fish Tissue
Aquatic Life Chloride
Aquatic Recreation NutrientlEutrophication
Biological Indicators
Aquatic Recreation NutrientlEutrophication
Biological Indicators
Aquatic Consumption Mercury in Fish Tissue
City of Maplewood
Surface Water Management Plan
ES-6
Draft #1 - June 2008
Of the listed pollutants in Table ES-2, the City is really only in a position to address the nutrient
(i.e" phosphorus) impairments and the chloride impairments, PFO impairments are still very
new to the impaired waters program and the City will need to maintain contact with MPCA and
the local watershed organizations as more information is available on the plan for these
impairments, According to the MPCA's Statewide Mercury TMDL Study, most of the mercury in
Minnesota's fish comes from atmospheric deposition, with approximately 90 percent originating
from outside the state. Because mercury has regional TMDL implications, little effort. will[:l:E>
placed on TMDL recommendations related to mercury for these waters as part of J?ilining
effort. The City will continue to review recommendations for mercury that may;b d by
EPA and/or MPCA to see if the regional approach to mercury has any fut e'cli'TI ... .on
City, More detail on the progress of the statewide mercury TMDL proce e'f6
MPCA's website,
Statewide, approximately 8 percent of Minnesota's river miles and 1
lakes have been tested for pollution problems, Approximately 40 perl)
. polluted with human and animal waste, phosphorus, suspended s(jlids, ....,...../..and other
pollutants, As more of the states' surface waters are tested for pollution ptQ'i;J']gms, it is
reasonable to assume that more waters will be listed as imp , subseq'u~J1t biennial cycles.
When Total Maximum Daily Load (TMDL) studies are co TMDLswilllikely be used
by the MPCA and local entities to further prioritize man nd establish additional
regulatory controls,
The City will consider the listing of the lakes in Ta e ,. ,1 In Y re management decisions and
actively manage the activities in the contributi ate[sneds,r(:j'limit the delivery of these
pollutants (primarily nutrients, sediment and 9~S) to t.hese waters, Infiltration best
management practices have a higher IElX~1 0 la;],'ph()BP/'l6rus removal than the traditional wet
stormwater ponds and the City's infilt.r~t1i::in reqyjr:Ei>l')'jgnhvill help with the reduction of
phosphorus entering the receiving~aters, . ",/,.
The City will nee ss localize flooding areas to protect life and property and
reduce the burd stem, As weather trends are showing higher intensity
storm events, the for loc ,d flooding will continue, if not increase, Along with this
realization is thatit higher level of urgency on the need to maintain the storm water
conveyance i>ystem unctions well during these events. While some debris blockages
of pipes and';structures \!Vii. . hlost certainly continue to occur, the efforts placed on identifying
problemp'tgas and cOl)gptting maintenance and/or installing physical improvements, will reduce
the po!e~tial for proble'tns.
with Natural Resources
Co surface water management with natural resources management an improvement
to maxlnlize the benefits and return on investments, The City of Maplewood intends to achieve
its vision and goals for natural resources using a comprehensive approach. There are four main
parts to the Natural Resource Plan.
. Natural Area Greenways. Natural Area Greenways are large contiguous areas of
habitat that cross ownership boundaries, They protect and expand ecosystem services
and habitat for species that are gone or are disappearing from the City,
City of Maplewood
Surface Water Management Plan
ES-7
Draft #1 - June 2008
. Local Habitats. Local Habitats are individual natural areas and backyard habitat
connections, They serve the needs of people wanting to enjoy and learn about wild
habitat near their homes and also provide ecosystem services and wildlife habitat locally.
. Active Parks and Trails. Active Parks and Trails connect greenways and preserves but
also give people places to play sports, picnic, and bike,
. Natural Resource Issues. Other natural resources issues are addressed c'
through individual programs,
Partnerships and Fundinq
The final critical area of focus will be the continued close coordination
organizations, Ramsey County, and other project-specific partners t
opportunities to gain water quality improvements and enhance other
same time, These efforts will be needed and a priority for the City on:
. projects, storm water system and utility maintenance activities, pui:lnco
activities and on private development projects, This cooperative approac'
leverage the limited funding that is currently available,
Maintain a financing strategy for surface water improve ry closely to the
cooperative approach to projects and activities, Thentinue using a
combination of environmental utility fees, special 'L ection charges, and storm
water program grant funds to realize the goals gf,tflis .,' Th ity will need to evaluate the
need for increases in storm water utility chargg$flth t.setvesas"the primary dedicated source for
funding the wide range of storm water progratl't.ac . 'He capital projects.
Implementation Plan
Development of the implementatiglTprogram the guidelines in Minnesota Rules Chapter
8410, the WMOs and Metrop ..' Council. City staff identified a wide range of issues or
problems related to e vari . sections, developed solutions or approaches to addressing
each of the issue . devel pecific action steps, including identification of possible
resources, meas , app' gj(iftjil,te schedules and planning level costs,
rogratl't includes a mixture of capital improvement projects, studies,
'on, monitoring and other management activities recommended
, . ,Estimated planning-level costs of recommended actions are
.note that they are not intended to set unrealistic expectations of the
ndlor activities, The costs provided are intended to serve as an order-
hat the activity may require, Notations are also provided where the
leted by City staff.
The.. fer bodies and wetlands are truly exceptional resources for City residents and thus
water qUality is one of the priority areas for future program efforts, City lakes and water
resources offer a range of recreational opportunities and some are truly exceptional resources
from a water quality perspective, Others are impaired for various pollutants and have a reduced
value due to those impairments, One of the most recognized and valued resources is Lake
Phalen, which is one of the four lakes in the City not impaired for excess nutrients (i.e"
phosphorus), One of the City's challenges in the years ahead will be to successfully implement
this Plan to maintain the quality of lakes like Phalen, and at the same time work towards
improvements in the seven lakes that are impaired for excess nutrients (phosphorus).
City of Maplewood
Surface Water Management Plan
ES-8
Draft #1 - June 2008
Water Quantity, or flooding, issues are another key area for the City to focus efforts on in the
coming years, While no major flooding-related issues exist, there are several areas throughout
the City where localized flooding can be addressed by infrastructure improvements associated
with street reconstruction and/or development projects, These localized flooding improvements
are in areas like Valley View in south Maplewood that was hit with localized flooding from
extreme rainfall events in the fall of 2005,
Except for the activities that are taken from the City NPDES SWPPP, the Impl$
is not a hard and fast commitment to complete each and every activity in t "tf
suggested, Rather, it is a suggested course of action that will accompli rn~Jo
plan; to accommodate new development, in-fill development and rede.'nt in th
community while protecting and improving Maplewood's surface wat. rces, Infra cure
replacements and/or additions will be reviewed, approved and adm! ' 'n accordance with
Maplewood's Capital Improvement Program.
1
2
3
Update wetland ordinance
4
5
6
2008
2008
2009-2012
Annual
2009-2010
2009
Annual
City of Maplewood
Surface Water Management Plan
ES-9
Draft #1 - June 2008
Amendments to the Plan
The NPDES SWPPP activities will be reviewed and evaluated annually in a public meeting and
the permit program itself is scheduled to be updated in 2011 and every five years after that. For
this Plan to remain dynamic, an avenue must be available to implement new information, ideas,
methods, standards, management practices, and any other changes which may affect the intent
and/or results of the Plan, Amendment proposals can be requested any time by any per~gp or
persons either residing or having business within the City. . ,... ."
Proposed amendments are reviewed by staff, and if determined to be rea~QB'abl
necessary amendment the need for a public hearing shall be considere ..,...., r~gul
Council meeting, Council and the watershed organizations have an 0 iWto d
whether or not to approve of the proposed amendments,
Annual Report to Council
An annual report wi!! be completed by City staff summarizing water resour .........., hagement
activities that have been completed over each calendar year e extent p'racticable, and to
avoid duplication of efforts, the annual report will be coon:i.i ,preparation of the NPDES
MS4 program annual report that must be submitted to f\II:l'?C.. .... Oth of each year. The
NPDES annual report includes a public notice, meeti 'g"imd.,Oo rocess prior to finalizing
the annual report, The City wi!! use this annual re . ioce valuate the overall storm
water management program,
Staffs intent is to revisit the goals, policies, tgg
basis, Water quality trends will be revie\fllgd with'
effectiveness of regulatory programs,,~(IFbe ev
projects wi!! be assessed, Based 0 ., hese sub
produce a truly dynamic plan,
ogJ@ s of the Plan on a three to five year
'''the Watershed Districts, the
nd the success of public improvement
t reviews, the SWMP will be updated to
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Executive Summary
Table of Contents
I, INTRODUCTION ",..""..""...."",...."".."....""..,..",."",.",..."..""."""..""".."",
A. Purpose of the Plan ..................'"",...,...................,.......""....,...................'..
B. Basis for the Plan ....,..........................................................................
1. Regulatory Basis ...............................'.'.'....................................0
2. Related Surface Water Programs ..............................................'
C. Water Resources Related Agreements.....................................
D. Plan Overview ..............."",........................................................
E. Plan Development Process,....................................................."tE";
II. BACKGROUND, HISTORY AND PHYSICAL ENViRONMENT,........ ....................,8
A. Location ..;....................."""................................ ........ ,...........;",;.."",......"..".".". 8
B. Land Use .....................................,...................,...... ........................................ 8
C. Climate......... ...................,.",..,.......................... ..............,.............."....". 8
D. Soils and Geology ..........................................'. ....................................... 10
E. Topography...............................................' ,............................................. 11
F, Groundwater ......................................... ................................................. 11
1. Groundwater Recharge ..................., .................................................... II
2. Groundwater Quality ......................................................... 12
G. Water Based Recreation 12
H. Fish and Wildlife 13
1. Pollutant Sources 14
III. """.""..""..""..",..",..""..""""..""",.."'.'"""",..""""...."..15
A. Goal 1 : ......................................................................................... 16
1. Non-D . ,:....................................................................................... 17
2. Impaire ......... :;':;:.,...........,.,............................................................................ 18
B. Goal 2:.. ement and Flood Control.............................................................. 19
C. Goal,~iFW etlan ...........................,.......................................................................... 20
E. G.9.~F.'5: Ground....... ........................................ ................................,.........................,.,.,.. 22
F.d6al 7: Educatil'lil and Public Involvement ......................................................................22
Watershe(!(Pistrict and County Programs.....................,.......,.."".........",......,...............23
City Prg,gf:ims .............,.""....................................................... ........",..",............,......... 23
k~m:.Flnancing.................,...,...,.."...,..........."......................... .... .................................. 24
:9': Maintenance and Inspecti on,.........................,................ ...................................... 25
1. Goal I 0: Regulatory Responsibility ..................................................................................26
1. NPDES MS4 Program SWPPP...................................................................................... 27
IV, Surface Water Resources."".."""",.."".."".."""""",..""..".,.........,........"",..",.""...".. 28
A. Overview ..........." ....................................,.........,.... .................................................,.,....... 28
B . Impaired Waters.....,..".............................................. ............................,.....,.......".,.......... 29
C. Lakes ................................................................................................................................. 31
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1. Beaver Lake..................................................................., ......,..'...,.......,.............,........... 32
2. Carver Lake.......,............................................................. .........................................,..... 33
3. Gervais Lake ....................................................................,.,.........""""""",."""..,......... 34
4. Keller Lake.......,................................................................... ..,......",.,'.'.,.",.".."............ 3 5
5. Kohhnan Lake.. ..............................,..,.,............................................. ............................. 37
6. Lake Phalen..........................................................................,........""...."...,............. .... 38
7. Round Lake..........................,....................................................................... ..... ....... 40
8. Silver Lake ...""...............................................................,....,.,........,..."".. ........., 40
9 . Tanners Lake............................................,.............................. ... ,. ...,;I~t~t.:..
I o. Wakefield Lake ..........................................................,................i
D. Creeks ................,.....................................................................,.
1. Battle Creek ....................,......................................................
2. Fish Creek ,......"",.,.......................................................,., .......
3. Kohlman Creek ............",.."......................................,.........".'
4, Willow Creek ........,....."..,...................................",.",."....:@i:.:....... .................... 46
5. Snake Creek .........................".."",.,.",."..."",.".......... .....'................. ......i...",.....",.."", 46
V, Implementation Plan ..,',..".."..,",..,"',.,",.,",....,",..,". ",....",..:",..""".",...."".,,47
A. Overview............. ........................, ..""""......"",,;;,.. .....,..,.,.....".",..", ...."" 47
B. Implementation Priorities and Cost .............,,:;0::":...... ........................................47
C. Funding Alternatives............................... ..,i;.'.... ,;,~;;:;"" ..,,/...........,.....,.........,.................. 48
D. Amendments to the Plan .........................'......."i..'.:......,,;;:::.................................................50
I. Amendments Procedures ................. co.' .......,.:;;0:................................................... 50
2. Request for Amendments.........;!:j...."'-.... '..:.::....................................................... 50
3, Staff Review", ..................... / .............................................................. 50
4. WMO Approval.............. .:............... .................................................................... 5 I
5. Council Consideratio ..........................,..,................................................................ 51
6. Public Hearing and '1 Action ...................................:.................................,......... 51
7. Council tion.... ...............................................................:............................ 51
List of Tables
List of Figures
Appendices
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Maplewood
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Surface Water Management PI..a
I. INTRODUCTION
The City of Maplewood (City) has prepared this Surface Wat
Plan) to establish a more functional and up-to-date resourc
management activities throughout the City, This Plan acjcjtesseg:s
storm water management that the City is likely to enc(;)l.friier i.~.ttle ~~n1 g years, These issues
include addressing impaired waters, an increased eed fo[,l"'Iibre ~flective stormwater treatment
methods and an increased need for maintenanc'b!ic a ... private stormwater system,
The issues equate to a need for continued€!J1d,!R H Ing for the surface water
management program, There is also anop'portimi .lter coordination of the overall surface
water management program with othE)r~Ci!y funct" IS Plan is being completed in
conjunction with the City's 2008 update to its Co e ensive Plan, As part of this
Comprehensive Plan, the City is "ucting a preliminary evaluation of the entire storm water
system and building on.recent . nder the National Pollutant Discharge Elimination System
(NPDES), Municipally,,;ge,parate, ewer System (MS4) permit program, The city has a
great history of coot..." effo en departments prior to, and as part of, the NPDES
permit program, Mo coordination between the different functions of the
City will be critical t goals of this Plan,
This introductgW":'section ith a brief description of the purpose and basis for this
updated Pla,rf;'followed by,'a, utline of the major sections of the ten overriding goals that were
used to g (1) developmE)~t of the Plan,
pian
A. P
IS Plan is to establish the framework of a comprehensive program that does
more th ply protect and improve the quality of existing water resources within the City,
The Plan also recognizes that development and redevelopment must and will continue well into
the future, and will serve as a guide for City staff to follow as they evaluate the potential impacts
of a given project on these quality resources, The Plan will serve as a toolbox for the City that
includes the best available water resource data at the time it was completed, up-to-date policies
and design standards, and a process to adjust goals and policies as new data is collected and
evaluated or as complimentary programs change, , With this guidance specific to surface water
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as well as the broader guidance provide in the City's Comprehensive Plan, this Surface Water
Management Plan will serve to:
. Provide for the use, management, improvement and protection of the City's surface
water resources
. Contribute to the quality of life by preserving and enhancing the high environmental
quality of the community
. Protect public investments and private property related to or affected by surfa
. Help to understand the larger context of surface water management i .
land use and land use policy
. Balance environmental protection and enhancement needs with eco
capabilities
. Meet regulatory requirements
B. Basis for the Plan
1. Regulatory Basis
There are a number of programs that deal with surface water ent issues in Minnesota,
State laws and rules, specifically Minnesota Statutes, Sect.L to 103B,255 and
Minnesota Rule, Chapter 8410 htt ://www.revisor.le.sta.te.mn:LI Ish the regulatory
need to update the City's Comprehensive Stormwate[,Jvhlnag~hl . These statutes and
rules comprise the State's Metropolitan Surface WS,.'Malilflgem Program (MSWMP), which
requires the preparation of watershed plans by w sh~,hlans, ment organizations (WMOs),
and the preparation of local water managemen s,lDa! ar~:~onsistent with the respective
WMO plans. This program also requires m\.ililicipalitig!i'to <j~yelop a Second Generation Local
Surface Water Management Plan, This p(ggrahl i -.. 'the requirement that the City Plan
needs to be approved by the WMOs tlOperate e City,
ch related to the goals, policies and standards of this
e Elimination System (NPDES) Phase II Storm Water
e State by the Minnesota Pollution Control Agency
. is program has many similarities to the MSWMP, and
Ian update, Additional information on the purposes
6grams, including information on the three WMOs that
Mana ement Pro ram
s of the Mi?tropolitan Surface Water Management Program (MSWMP) is that
icies anq.:t.h6ughtful program implementation, goals for proper water and wetland
'.ent can be realized and water quality can be protected, Such a program
Ion with neighboring communities, counties, state agencies, and WMOs,
Througper planning and implementation, informed decisions can be made which allow for
the protection and/or enhancement of water quality, prevention of ground water degradation,
and reduction of local flooding.
The purpose of the water management programs required by Minnesota Statutes S103B,205 to
103B.255 are to:
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. Protect, preserve, and use natural surface and groundwater storage and retention
systems;
. Minimize public expenditures needed to correct flooding and water quality problems;
. Identify and plan for means to effectively protect and improve surface and groundwater
management;
. Establish more uniform local controls for surface and groundwater management;
. Prevent erosion of soil into surface water systems;
. Promote groundwater recharge;
. Protect and enhance fish and wildlife habitat and water recreation facilities;
. Secure benefits associated with the proper management of surface
., oriartievelopment Framework,
ouncilissued individualized
they heed to update in their
It their updated plan to Metropolitan
b, Metropolitan Council
The Metropolitan Land Planning Act requires local governments in the
area to develop local comprehensive plans. The Metropolitan Council i
a comprehensive planning guide for the area, the Metropolitan Develop
Comprehensive plans include several sections related to existing an<;l,fut
for future development, a housing plan, transportation plan, public utilities in
surface water management plan, Each community is required to' e their
plans every ten years,
The main component of the Development Guide is the)~
which was most recently updated in 2005, The Metropolita
system statements to each community to inform t ....,
comprehensive plans. Each community is requir
Council by the end of 2008,
As mentioned previously, the surface VoIil-tiWman
comprehensive plan, Communities 1T)"$fhave a te and approved surface water
management plan in order to get!REl]r'.comprehensive plans approved, The Metropolitan Council
sets certain goals, policies, andtggi.lires specific information to be included in the surface water
management plan, Th haves." ". ives to use low impact design (LID) techniques and to
promote infiltration a lume he City of Maplewood's surface water management
plan will include th remen be submitted for approval by the Metropolitan
Council in 2008,
c. Watershed M
Under the t)i1pWMP htt ' .bwsr.state,mn,us), the City is required to submit its updated
SWMP t . MOs having'Jurisdiction within the City, Maplewood is located within three major
watersh nits, incl~.<;lihg the Ramsey-Washington Metro Watershed District (RWMWD)
(www, . d,or )dhe Capitol Region Watershed District (CRWD) (www,capitolregionwd.org),
and t ranch Watershed District (VBWD) (www,vbwd,orq) The watersheds are shown
on Fig ch illustrates the jurisdictional boundaries of the watershed units.
All three of the Watershed Districts have jurisdictional authority within the City, and therefore
each must review the City's Plan to evaluate consistency with the respective Watershed District
Plan, Capitol Region Watershed District completed its plan in 2000, Valley Branch Watershed
District updated its plan in 2005, and Ramsey-Washington Metro Watershed District updated its
plan in 2007,
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This updated SWMP addresses each of the required elements in Minnesota Statutes and Rules
and is consistent with the Metropolitan Council's guidelines for Water Management Plans, The
Plan has been prepared to be consistent with the CRWD, RWMWD, and VBWD plans, The
criteria set forth in this Plan, as a minimum, establish the degree of performance necessary to
achieve improvement in water quality and water quantity management. These criteria are not
intended to dictate or preempt the design process, but rather provide guidelines to proper
development and redevelopment.
This Plan represents a unique combination of resource management, regulatory co
public works management. As discussed above, State Statutes and Rules reqljir~
prepared for each watershed in the seven county metropolitan area, Local (i,.f1f)ifC'
also be prepared and approved by the applicable watersheds and review€! m th,
Council. Once approved by the WMOs and adopted by council, the Pia ~s part. .
City's overall Comprehensive Plan, The Plan is geared towards meetintual goals
of the WMO's within the City, '
d, Ramsev County
Ramsey County is responsible managing several aspects of wa e urces ghout the
county. For the purposes of this Plan, the county's main rol..€!:,i the Plan for
consistency with the locally adopted groundwater manag€!rne ',. to this role, the City
also seeks to continue cooperation with the County on'lated,wOr Ing transportation
improvements, parks and opens space managemen .... Ilgf'thes.~L ases, there are
opportunities to coordinate efforts between the Ci,>,y nd X9unty tg'Jind more efficient and more
cost-effective storm water management practice~i'i~nd .r~latediI1jprovements in natural areas
and open space, These coordinated efforts,wil!;:~ee ,in'min<!.;,l1Ypportunities for enhancements to
the open space, natural corridors and wa ,. eso . ,
2. Related Surface Water Program,lI
a,
"', ,
m." .
The NPDES StormMY"C1t~r:Permi . m is a federal regulatory program that requires owners
of Municipally Sep.' .. rm Sew.€!r;ystems (MS4s) to prepare and implement a Storm Water
Pollution Preventio (SWF'F',I")'and apply for the permit with the administrative agency,
The Minnesota Pol. I Agency (MPCA) administers the Phase II MS4 program in the
state htt :// ca,s a ), The City submitted its first permit application and SWPPP
prior to the fv1Cl.~ 10,200 lal submittal deadline. A revised permit was issued by the MPCA
in 2006 an<!;:tne City com, d a revised SWPPP. This SWMP does not specifically incorporate
all ofthst managefl")~rit practices (BMPs) identified in the City's SWPPP. Instead, the Plan
builds 0 ese existi[]g"activities by specifying projects and management approaches to
achiev City'~x{afer resources goals. The six minimum control measures required of the
progr
. Pu Iic education and outreach (which includes teaching citizens about better stormwater
management)
. Public Participation (including citizens in solving stormwater pollution problems, This
includes a required public annual meeting and an annual report)
. Illicit Discharges Detection and Elimination (reducing discharges to the stormwater
system of things like chemical dumping and wastewater connections)
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. Construction-site runoff controls (standards for erosion and sediment measures)
. Post-construction runoff controls (standards for things like treatment ponds, rainwater
gardens and reducing the volume of runoff form development sites)
. Pollution Prevention and Good Housekeeping for Municipal Operations (measures like
covering salt piles and street-sweeping, cleaning storm water ponds)
One step in meeting the initial Phase II requirements in 2003 was a self assessment process
that the City completed to prepare their Notice of Intent (NOI or permit application) fa ov~r~ge
under the NPDES MS4 Phase II. In this process, the City considered receiving wat' ~cCity's
existing storm water management plan, and a range of BMPs that could be follQW ' ve
the MS4 permit requirements. The self assessment resulted in an understaQ~j\ng o.
current storm water programs and future priorities. ..j .,
.
In addition to administering the MS4 process, the MPCA also lists wate'tt~(f~i~s' in Minneso s
impaired, which means that a Total Maximum Daily Load Study needs t<!.!~~!,~q,rnpleted, Please
refer to the "Water Bodies" section for more information regarding the)r#p" . aters and
TMDLs in Maplewood, "
b, Wetland Manaqement
hich the City
fements that are based
The City of Maplewood has recently revised their Wetlan.
reclassifies the wetlands, The ordinance also sets min'
on the classification of the wetland,
The Ramsey-Washington Metro Watershed Distriqfals
wetlands in the District. The District's c1assificali!;t". ' ,
has an A+ class, The City's minimum buft~r2widfh
minimum requirements, The RWMWD)$'fl1e Loc
permitting, ,.
esgi(c assification system for
sir#lIar to the City's, except the City
!'1nerally greater than the District's
rnment Unit (LGU) for wetland
".,.".""",
C. Water Resources Related Agreements
The City has sever
watershed districts
maintenance of sto
" "'.~
"
mentirwith aajacent communities, MnDOT, Ramsey County and the
'ties relating'to management of water resources and operation and
stemcornponents. These agreements are included in Appendix
Ow.,.., ....
One of tnecfirst steps tg~en to develop this Plan was to gather and compile the best available
inform and datgiJr6m a number of resources. Sources of these data include the City's 1990
Comp . 'rmwater Management Plan, the City's 2002 Comprehensive Plan, the
Water . ticts' plans, MPCA NPDES Program and other relevant sources, This data and
informa as then reviewed and evaluated as part of the update process.
Following this Introduction section, subsequent sections address the background, history and
description of the existing physical environment (Section II); goals and policies (Section III); key
water bodies within the City (Section IV), and establish an implementation plan to guide future
projects and management activities for the protection and future enhancement of the City's
water and wetland resources (Section V).
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Using the ten goals presented in Table 1 as the guiding principles of the City's surface water
program, the Plan is intended to guide surface water resource management activities through
about the year 2030, Though long term in focus, the Plan has numerous future decision points
relating to recommended capital improvements and ongoing inspection, maintenance and
monitoring activities, Where applicable, staff and financial resources of the City, WMOs, and
adjacent communities are called on to maximize the effectiveness of the results, The Plan was
developed recognizing the need to prioritize management actions and decisions base,g on
protection level of a given receiving water (i.e" lake or wetland), as established t ,. ,
the respective watershed organization,
Table 1. Plan Goals and Goal Statements
1
Water Quality
Maintain or enhance the water quality.<:!f;Mapl~
waters relative to current conditions and strive't
quality improvements,
Preserve. maintain, utilize a tical, enhance the storm
water storage and detentiP.. trol excessive volumes
and rates of runoff, con' oOdjP9, fpublic health and safety,
and to minimize nec~s ry p,yj:jlic c<j(.lJ xpenditures,
Achieve no net losllj!'>f wetl?l'flds. i ding acreage, functions and
values, Where pr~1::lical:1l~'timpr the functions, values,
biodiversity and;~cie<j9'e;of wl'... nds and their buffer areas,
Protect CelRacityofstarm .w"iitt,r system, prevent flooding and
maint<jim..water q eventing erosion and sedimentation from
occL.l/'ring, and c xisting erosion and sedimentation problems,
rolect the quality and quantity of groundwater resources and
lop a cooperative program with the watershed district to identify
tion-sensitive areas.
the public health. safety and welfare through a
r~hensive ISTS ordinance that requires properly designed and
ained ISTS systems,
Increase public and city official awareness, understanding and
involvement in water and natural resource management issues,
Establish and maintain funding sources to finance surface water
management activities,
Preserve function and performance of public infrastructure through
continued implementation of a maintenance and inspection program,
Develop a city-maintenance plan for the inspection of all ponds,
outlet structures and inlet facilities and consider initiating a pond
delta removal program, Such a program should consider
improvements to reduce sediment loads to ponds, wetlands and
lakes to help prioritize critical improvement areas,
Maintain primary responsibility for managing water resources at the
local level but continue coordination and cooperation with other
agencies and organizations,
2
Runoff
Management and
Flood Control
3
Wetlands
4
Erosion and
Sediment Control
5
6
7
alnlenance and
Inspection
10
Regulatory
Responsibility
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E. Plan Development Process
This Plan itself has developed over about an eight-month period starting in about January 2008,
In effect, the Planning process has really been underway since the City first started hearing
about the NPDES MS4 Permit program requirements in about 2001-2002. Many ofthe program
activities that the City was already following are covered in the six minimum control measures of
the City's Storm Water Pollution Prevention Program (SWPPP). The City has made refinements
to its NPDES SWPPP and improvement in its overall storm water management progr?lm oYl'lU"
the first five years of the program and has considered these improvements during qe'77 Hient
of this Plan, One of the more extensive efforts related to the NPDES program ,.. ing
Assessment and Nondegradation Report that was completed and submitted. late
2007, Opportunities for public input were provided during development of
also collected from each of the local watershed districts,
The more recent process included many steps and coordination, inclu
, members of City staff, informal and formal meetings with the Compre~gns
Team, the Parks Trails and Open Space Task Force, EnvironmentaH;j'nd
Commission, City Council and Planning Commission, Two public rTJ<:letings re
Comprehensive Plan were also held in April and May of 2008 to ........ residen n opportunity
to provide input in the planning process. The key meetings ' ed directly below,
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II. BACKGROUND, HISTORY AND PHYSICA
A. Location
The City of Maplewood is located in the eastern suburb?",bfth metropolitan area in
the eastern portion of Rarnsey County as shown on F 'afe 1.,,'i'\1hi , ear Lake and Vadnais
Heights border the city to the north, Little Canada, 'evil ef'andJ?f. Paul to the west, Sl. Paul
and Newport to the south, and North Sl. Paul, Oq WOQl:jbury to the east. The total
surface area of Maplewood is approximately 11 or,abbut 18 square miles,
B. Land Use
Land use within the City of MaplewQ
shopping centers, light and hea
of surface water featur@s, natu'
Comprehensive Pia " udes
issues in key areas ity, Fi
Maplewood, respe
ranges from single and multi-family residential uses to
hufacturing, commercial, as well as an extensive network
, open space and parks, The City's 2008
ailed information on the land use patterns and specific
, and 4 illustrate the existing and proposed land use in
C. Climate
Ian contaL ore extensive information on the climate in this area of the Twin
ollowing pal~'graphs are based largely on this information,
Becau.S) "Qf its 10cqtiQ"tl near the center of the North American continent, the Twin Cities
metropi;lJ!' "and Minnesota) experiences a wide variation in climate conditions (e,g.,
drougl1t$, ds, heat and cold), However, even with these wide variations, climatologists
have foi:in our significant climate trends in the Upper Midwest (Minnesota Weather Almanac,
Seeley, 2006):
. Warmer winters
. Higher minimum temperatures
. Higher dew points
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. Changes in precipitation trends - more rainfall is coming from heavy thunderstorm
events and increased snowfall
According to the Soil and Water Conservation Society's (SWCS) 2003 report on climate change,
total precipitation amounts in the United States (and in the Great Lakes region) are trending
upward, as are storm intensities, Precipitation records in the Twin Cities area show the annual
average precipitation has increased, as shown in the following examples:
. Minneapolis-S!. Paul Airport station - the average annual precipitation has i
from 28,32 inches (1961-1990 average) to 29.41 inches (1971-2000 av(;)r~
increase(data from the Climatology Working Group website: http://clim?t~,u
. S!. Paul station - the average annual precipitation has increased f .
(1961-1990 average, from the MN DNR State Climatology Office
2000 average, from the Midwestern Regional Climate Center w
http://mcc,sws,uiuc,edu/climate_midwestlmwclimate_data_su
increase,
As noted by the SWCS, increased storm intensities result in increased soil e
increased runoff. The MPCA's global warming website states th increased f10 Ing could also
result from more intense precipitation events, The City of M s experienced extreme
rainfall events and has observed the localized flooding th these more intense
storms. One of the things the City has been doing in r(;),R; Y(;)alFS, ormalizing as part of
the follow-up efforts of this plan, is to require analys(;)~'iof e~M~fne .". 11 S (on the order of 10 to
12 inches of rainfall for example) to determine wh ." otentialJpr damage might be at a
specific development site.
The amount, rate, and type of precipitatio etermining flood levels and
stormwater rates, all of which impact rbanized watersheds, shorter
duration events tend to playa larger L." in prediCA Igh water levels on basins, Shorter
duration events are generally usedyhydrologists to study local issues (sizing catch basins,
storm sewer pipes, etc,), Longer ion events are generally used by hydrologists to study
regional issues, such predi h water levels for regional basins and basins that have no
outlets (landlocked) .ve sm ts relative to their watershed size.
t occur) snowmelt in early spring are significant in this region.
d, although they occur over a long period, can have significant
rainage area to a lake or pond is large and the outlet is small.
Ined from a number of sources, such as the following websites:
. tion about the Twin Cities metropolitan area:
ttp :/Iclimate, u .ed u/doc/twin _ cities/twi n _cities, htm
. e of Minnesota climate information:
. .umn.edul
. er Minnesota climate information:
. http://www.dnr.state.mn.us/climatelindex.html
An analysis of annual precipitation and runoff data was completed as part of the City's Loading
Assessment and Non-Degradation Report, The following paragraphs are a summary of the
analysis included in the Non-Degradation Report,
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Weather estimate statistics are typically based on a 30-year interval of records, The rainfall
distribution for Maplewood has been assessed based on complete daily precipitation records
from 1976 to 2006 for the Ramsey-Gladstone weather station (Station No, 217377; 29N-22W-
S22). This is the closest station to the City of Maplewood, From this data set, the average total
annual rainfall was determined to be 33,8 inches, It is generally assumed that only 90 percent of
the total precipitation generates runoff, In the data record used for this study, all the precipitation
events greater than 0,15 inches are assumed to generate runoff, A summary of the annual
rainfall averages is provided Table 2, These values were used to help determine the e
annual runoff volume, and concentrations of total phosphorus and total suspended
more information regarding Non-Degradation please see the City's Non-Degrad
Table 2. Maplewood Area Annual Precipitation Sum
D. Soils and Geology
Widely varying surficial geology, soils,ilt!t:l"topog
Maplewood, This is the result of the ilf!;l'::l being s to repeated glacial advances and
retreats and the erosional proces!ie!i~hat have occurred since that'time, Three major
geomorphic classifications arejg ".. within the City based on the geologic origin of the soil
apparent material. The$.e three. tions include; loamy Grantburg glacial till soils, loamy
Superior till soils, a dy soil' amsey County Soil Survey provides additional detailed
information on su within ty of Maplewood,
Infiltration capaciti
Generally, thebi>JIi r the
ConverseIY,!ip1fs with 10
discharge.r;;j,tes.
n affect the amount of direct runoff resulting from a rainfall event.
n rate is for a given soil, the lower the runoff potential.
ation rates produce relatively high runoff volumes and high peak
Four g~~~fal hydrol9l:licgroups for soils based on texture and slope have been established by
the Natural R so. re Conservation Service (NRCS), The groups as shown in Figure 5 are:
. '............ - Low runoff potential, high infiltration rate
. Group B - Moderate infiltration rate
. Group C - Slow infiltration rate
. Group D - High runoff potential, very slow infiltration rate
Soil characteristics are essential for completing hydrologic analyses and are also important
when developing erosion control plans, Special attention to erosion control measures and
establishment of interim cover during construction must be considered in areas of steep slopes,
City of Maplewood
Surface Water Management Plan
10
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in areas with highly erodible soils and in areas with prolonged land disturbance. The erosion
control handbook published by the Board of Water and Soils Resources (BWSR) includes
recommended practices and the Minnesota Pollution Control Agency's Stormwater Manual also
includes recommendations and design guidelines for erosion and sediment control.
E. Topography
The topography within Maplewood is typically characterized as gently rolling, HowevElf,
natural drainage plan for the City is relatively well defined, Almost all stormwater run
generated within the City of Maplewood is discharged through the City of Sl. P~cjl
Mississippi River. Two relatively limited areas direct stormwater runoff in a gifl'erEmt
One consists of an approximately 200-acre area on the south end of MapJ~~bO(t(:; it
discharges into Newport, and the other is an approximately 100-acre arg?l;;Qnt!,!Etnorth
corner of the City, Joy Park lies within this northeast area, which drains:~IWl;fQ!ty into Silver
or east into Oakdale. Along some of the remaining boundaries, stormw' "" will be
'directed into some adjacent communities, but eventually circles back L lewood and is
discharged through the City of SI. Paul and ultimately into the Missis~lppi
With the City's roughly 18 square miles, approximately 1 0 squ~,~'mil"gs of the are within the
watershed of and eventually drain into Lake Phalen, Approxirnafe;l",;'li' uare miles drain into
outlets going through the City of Sl. Paul, mostly throug' L ;s,,:~lIer drainage systems
and approximately a one square mile area located on, "" ':!Ylaplewood discharges to
Trout Brook, "',
F. Groundwater
<''been summarized from information
The following paragraphs describing the
provided in the RWMWD 2007 Plan,
Maplewood is serviced by Sl. Pa gional Water Services (SPRVvS), Although the vast
majority of the SPRWS water s omes from surface water, the SPRWS uses/will use
groundwater as an altEl,Enate w , ply when there are taste and odor problems, during
drought conditions, ther sp , ' \)ations (e,g" security reasons). Currently, 10% to 20%
of the SPRWS wat consi foundwater (annually), The SPRWS has four
groundwater wells ning t tall approximately 10 new groundwater wells to increase
their groundwater ~city from 20 to 50 million gallons per day (SPRWS, personal
communicatio
In genEl~~!i)rechargEl,Jgthe groundwater system occurs throughout the City, However, the
hydrolggitGharilGteristics of geologic deposits at the land surface significantly affect the rate,
volum IWloution of recharge, Water infiltrates most rapidly into sandy deposits and flows
easily andy materials; clay deposits tend to slow and impede infiltration and
subsurface flows, Urban development and the widespread construction of impervious surfaces
(buildings, streets, parking lots) has reduced the amount of open space and wetlands and has
decreased the amount of land available to recharge groundwater.
Groundwater recharge reaches the water table at a fast rate through sandy geologic deposits,
Water level data from wells indicate that surficial aquifers usually have higher static water levels
City of Maplewood
Surface Water Management Plan
11
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than deeper aquifers, indicating that water flows downward into the aquifer system and that
surficial aquifers help recharge deeper aquifer systems, Deeper bedrock aquifers are recharged
through bedrock valleys, leakage through confining layers, fractures in tills and confining layers,
improperly constructed wells and other areas where good hydraulic connections and unforeseen
flowpaths exist with upper aquifer units,
2. Groundwater Quality
The overall groundwater quality in the City is good, The continued use of groundwat
municipalities, homeowners, and businesses indicates that most groundwater ~1:fP ,
sufficient quality for potable use. Unfortunately, long-term data for analyzinggft6tm
trends in the RWMWD are lacking. There is no comprehensive report sUrT)!l'I~tizif]
quality conditions, Only small-scale water quality studies and analyses haV"e- bgehperf
select areas for particular needs, A brief summary of some of these stu s":presented e
Ramsey County Ground Water Quality Protection Plan (Ramsey Soil r Conservation
,District, 1994),
Recharge to the groundwater system due to infiltration of precipitation occur
City. The rate of recharge is dependent upon the hydraulic con of the logic materials
above the water table. Areas that experience rapid recharge ation are particularly
sensitive to pollution. For additional information regarding,: bedrock aquifer)
sensitivity within the City, see the Ramsey County Geo' ie
Cities that pump groundwater to supply their resid
prepare wellhead protection plans. Through the -
drinking water supply management areas (DW
DWSMA represents the boundaries of th h
protected and managed by the wellhe tecti
Paul, Oakdale, St. Paul Regional Wat
ki_ _, water are required to
prgfection plans, cities delineate
eir"unicipal groundwater wells, The
e well and is the area to be
e DWSMA (or portions) for North St.
oodbury are located within RWMWD,
As Maplewood, RWMWD and _ its of government rely more heavily on infiltration
practices to improve w ter qual reduce stormwater volumes, the City and RWMWD will
need to consider th 'ble im ,infiltrated stormwater on groundwater quality. The risk
of contamination fro ted s er is especially high in wellhead protection areas
(WHPA), The Minne rtme Health (MDH) developed guidelines for evaluating
proposed stormwa1~[R projects in vulnerable wellhead protection areas (December
2006), These gyJgelirle f six steps/questions (also shown on a flowchart) that focus on
the location 9:f:t11e propo ration site. For example, the first questions ask if the proposed
infiltration :;;ile:is in a vuln e WHPA or DWSMA, and if so, if it is located inside a 1- year time
of travel ,~:~rle, Other qlJ.~~tions focus on land use and spill containment. The RWMWD will apply
this guian:ce (includil"!!:I'future revisions/updates) to help evaluate the location of proposed
infiltrati roject:;;igure 6 illustrates the locations of wells and wellhead protection areas in
Mapl
ased Recreation Areas
As mentioned previously, the City has a variety of lakes, wetlands and waterways that provide
aesthetic, environmental and recreational value to the community. Based on the Department of
Natural Resources Public Waters and Wetlands Inventory, there are 19 public waters located
fully or partially with the City of Maplewood as shown in Figure 7. Public waters are indicated as
City of Maplewood
Surface Water Management Plan
12
Draft #1 - June 2008
such to indicate which lakes, wetlands, and watercourses over which DNR Waters has
jurisdiction,
Several parks located on or near public waters provide boat ramps, fishing access and/or
swimming beaches, along with trails and picnic areas and open space, Table 3 summarizes the
water-based recreational facilities at these parks, Figure 9 shows significant surface water
features located in or adjacent to Maplewood,
Table 3. Water Based Recreation Areas
Ramsey County Park
Carver Park . .
Ramsey Cou nty Park Beach .
Keller Lake Regional Park . .
Kohlman Park . .
Ramsey County Park .
Ramsey County Park .
Joy Park . .
Tanners Lake Park . .
Ramsey County Park .
ify of Map(~Wood, in order to preserve a beautiful, functionally, and varied
ronment (q~i5urrent and future residents, will protect, connect, restore and
age it$,;~(;6systems, plant communities, and species, This will be done using
,;cience and striving for the highest ecological standard.
The City aplewood intends to achieve its vision and goals for natural resources using a
comprehensive approach, There are four main parts to the Natural Resource Plan.
Natural Resources Plan as part of the comprehensive
ary of information provided in the Natural Resources
H. Fish and Wildlife Habitat
The City of Maplewoodds com
planning process, 1;m~~~ction i
section of the Comp' .., ive Pia
The City believes i
to promote healL
natural resour'es:
to treat natural resources in a sustainable way, and to continue
h and wildlife, The following statement is the City's vision for
. Natural Area Greenways. Natural Area Greenways are large contiguous areas of
habitat that cross ownership boundaries, They protect and expand ecosystem services
and habitat for species that are gone or are disappearing from the City,
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Surface Water Management Plan
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. Local Habitats. Local Habitats are individual natural areas and backyard habitat
connections. They serve the needs of people wanting to enjoy and learn about wild
habitat near their homes and also provide ecosystem services and wildlife habitat locally,
. Active Parks and Trails. Active Parks and Trails connect greenways and preserves but
also give people places to play sports, picnic, and bike.
. Natural Resource Issues. Other natural resources issues are addressed city-side
through individual programs,
Please refer to the City's Natural Resources Plan for more detailed information reg.
greenways, habitat and natural resource issues and the City's overall plan and a P
continue promoting sustainable natural resources, .
I. Pollutant Sources
The City of Maplewood does not have any landfills, dumps, hazardous
, its boundaries, Information on pollutant sources is available from the
This detailed information has not been included here as it is subject
be obtained by calling the MPCA or by visiting the MPCA's website
which has information on various pollutant sources and related
will identify leaking underground storage tank (LUST) sites.ad
above and underground storage tanks (ASTs and USTs)AlJiftnJ"
information on permitted wastewater discharges and h~ardoLJ,~'W
has information on abandoned wells within the City MOra I" 0
Some additional pollutant source information ma
Counties maintain maps and databases that dis ".
spills, MPCA-registered ASTs and USTs, . .
aila from Ramsey County,
-;ported LUSTs, MPCA-reported
City of Maplewood
Surface Water Management Plan
14
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Maplewood
.
M
nnesota
Surface Water Management PIa
ater
for the effective
pport the City's
mately standards that
r the basis of these goals
III.GOALS AND POLICIES
Minnesota Rules, Part 8410.0170, subpart 5 (italics below), r
Management, requires local governments to establish goat.
management of water resources, The ten goals establish:~ai .
Purpose Statement by translating each goal into spec;il!&poligi!ls
are realized through the implementation plan. As ax ..'.ren.g~j:Joi
and policies, the following italicized text is from Mi o.la:Rule
~
".'-.M.'-.."_ ^
"M'_,_,'._ .__"._..
.-.-- --
....'..'...__..,_ _0"__'
M...._.. ....___.... .'
M. R. 8410.0170, Subpart 5. Establishmgnt pfpQligfes alJgoals (Local Plans), Each local
(SWMP) plan must state specific goa,!ifjtJnd co" f1fJing policies related to the purpose of
these plans, be consistent with thgpoficies a s of the organization plans within the
City or township, and address thf!ctrelation of ocal plan to the regional, state, and federal
goals and programs outlined' '.... 8410,0070,
A goal is a desired eflp,.lQward rface water management efforts are directed, This
section identifies go' '......~. water s planning and management functions throughout the
City, The goals of t ere e..........,.. ed in accordance with the purposes of the water
management progr"d by Se'ctions 103B,201 to 103B.251 and in conformance with
the goals of the risdiction in Maplewood, including the RWMWD, CRWD, and
the VBWD, Ta he City's ten goals and corresponding goal statements,
Each goakas several cq~responding policies that form the governing principals that will be
followed.to"achieve th . oals. The goals and the corresponding policies are presented in more
detail in,"';tile followi ges, Plan standards (or storm water Development Criteria) are an
extensf f th s and policies that provide detailed criteria on storm water management
practi ended surface water management design standards for development and
redevelop, t projects are provided in A.PPE1rjdi*_ of this Plan.
City of Maplewood
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Table 4. Plan Goals and Goal Statements
Goal
Number Goal Goal Statement
1
Water Qualtity
2
Runoff
Management and
Flood Control
3
Wetlands
4
Erosion and
Sediment Control
5
Groundwater
6
Individual Sewage
Treatment Systems
(ISTS)
Education and
Public Involvement
7
8
Financing
9
10
Maintain or enhance the water quality of Maplewood's surface
waters relative to current conditions and strive to achieve water
quality improvements,
Preserve, maintain, utilize and where practical, enhan
water storage and detention systems to control ex .
and rates of runoff, control flooding, protect pu '
and to minimize necessary public capital exp
Achieve no net loss of wetlands, including
values, Where practicable, improve the f '
biodiversity and acreage of wetlands an
Protect capacity of storm water system"pr
maintain water quality by preventing etpSlo
occurring, and correct existing erosion and se
Protect the quality and quantity. water r urces, develop a
cooperative program with th 'strict to identify infiltration-
sensitive areas,
Protect the public healt
comprehensive 1ST
maintained ISTS s'
Increase public..~Q~ cit
involvement inw '.
Establisnand m
man?9l#fflent ac '
Prserve function nd performance of public infrastructure through
ued implementation of a maintenance and inspection program,
op a city-maintenance plan for the inspection of all ponds,
tructures and inlet facilities and consider initiating a pond
oval program, Such a program should consider
i . ... ..... ents to reduce sediment loads to ponds, wetlands and
laK~~rto help prioritize critical improvement areas,
Maintain primary responsibility for managing water resources at the
local level but continue coordination and cooperation with other
agencies and organizations,
e through a
equires properly designed and
la.~Wareness, understanding and
naWr',,1 resource management issues,
, ihg sources to finance surface water
The C wood seeKs to maintain and improve the water quality in its laKes, streams
and wet an . Water quality is often directly related to the level of available nutrients in a water
body, While nutrients comprise only one category of substances that can affect water quality,
nutrients (principally. phosphorous) must be controlled to achieve the water quality goals of this
Plan, Phosphorous is most often the limiting factor for plant growth, and increases in available
phosphorous allow plant species to dominate the laKeshore, open water, or marsh, Six of the
City's laKes are currently listed as impaired for nutrients on the 2008 Draft List (Kohlman LaKe,
Keller LaKe, Round Lake, Beaver Lake, Carver Lake, Wakefield Lake), and phosphorous is the
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Surface Water Management Plan
16
Draft #1 - June 2008
key nutrient responsible for this listing, Figure 9 shows the location of the impaired waters and
their impairments in Maplewood,
There are several key activities that can be followed to minimize the delivery of phosphorus into
these listed waters and all of the City's water bodies, These activities include better
management of construction site erosion control measures, reducing the level of impervious
cover, reducing the extent of managed lawn areas and replacing them with native vegetation,
reducing stream bank erosion, using more open channel drainage systems with natur.
vegetative cover, and requiring more infiltration and volume control best manageme '
for storm water treatment.
An assessment of the overall quality of the lakes and water resources in
as part of this planning process, The City also completed a Non-Degrad
the NPDES Permit MS4 program requirements. This study confirmed t
infiltration and volume control would turn the City in the right direction t
, quality, In addition to focusing efforts on improving the few waters that;;iI
of activities can be accomplished on a routine basis to improve the q(JaTity'
Housekeeping practices, such as removing leaves from streetsAill5G1J'$torm drain. nd limiting the
use of phosphorus fertilizers, are examples of simple ways l . residents) and the City
can make improvements in water quality, Many people do fganic materials, like
leaves and grass clippings, fertilizer and pet waste can.'..! em of a lake, Once in
the lakes these organic materials decay, releasing Pt!l:I$ ho, phosphorus increases
algae growth, inhibiting the growth of other aquatiQ'j:lla.",:lJVhen.,>. ae die and decay, they
exert a biological oxygen demand on the lake, d~P.lfl ' HvailatJ.li;l' oxygen for fish and other
aquatic species, Limiting nutrients is one of the, ," ... aif1!i'fning or improving water quality,
1. Non-Degradation
on-Degradation Study in November 2007, The study was
.. Control Agency, and included an assessment of the
unoff volume, total suspended solids, and total
oximately 1988 to 2005, and 2005 to 2020), The intent
a plan to address any increased loading of one or
sion of the report states that:
reduction in total phosphorus and total suspended
solidsAQad by the 20, but will experience an increase in the runoff
'e. It seemsrgasonable to conclude that the increase in Runoff Volume is
ensuratevgitl1 the size of the City, Runoff Volume reduction is a relatively
area to thfi;storm water management arena while the potential adverse
cts ar~,Blilrbeing studied and debated, The most common impacts cited in
iQfFwith the runoff volume increase are a pronounced degradation of the
Iream banks and more frequent inundation of the wetlands, The City is
no aware of channels and/or stream sections that have increased erosion that
can be directly attributable to increased runoff volumes, Therefore, the City does
not consider the relative small increase in volume identified in this analysis to be
significant (SEH, 2007).
City of Maplewood
Surface Water Management Plan
17
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2. Impaired Waters
Waters that are on the Minnesota Pollution Control Agency's Total Maximum Daily Load list of
impaired waters for one or more pollutants are shown in Table 16, located in the Surface Water
Resources section of the Plan. For more information regarding the MPCA's List of impaired
waters refer to the Surface Water Resources section of the Plan,
The City will consider the listing of the lakes in Table 16 in future management decisions an
actively manage the activities in the contributing watersheds to limit the delivery of t
pollutants (primarily nutrients and sediment) to these waters, Infiltration best mcUJla
practices have a higher level of total phosphorus removal than the traditiona.kwi\t s
ponds, The City's infiltration requirement will help with the reduction of pho . ru
receiving waters, The City has developed the water quality policies liste 'if'5 to
the water quality goals of this Plan,
Table 5. Water Quality
1
o maintain and improve
through cooperation with
2
Cooperate and collaborate with.th'e wa
to improve the water qualitygf;*pecific
in their efforts to maintain and,lor
ources in the City,
3 Look for opportunities to piDvide enhanc evels of stormwater treatment upstream of
lakes and wetlands, deJ~Hding on the wetland's functions, values and management
classification,
liurage using innovative volume control and treatment practices (raingardens,
tment structures, NURP ponds, etc,) on all improvement and reconstruction
projects, whenever practical.
4 ent structures to enhance water quality by removing
off, Pond designs will meet the national urban runoff
ndards,
5 water treatment structures shall include a detailed City-approved
'at meets City and watershed district standards and criteria,
6
8 Design outlet control structures. wherever practical, that restricts both high and low
flows, to maximize sedimentation and nutrient removal.
9 Continue implementation of the City's education program that includes items about
preserving and improving water quality,
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Surface Water Management Plan
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B. Goal 2: Runoff Management and Flood Control
Development and the related changes in land use can increase runoff rates and volumes due to
additional impervious surface, As areas develop or redevelop at a higher density, storm water
runoff generally increases, This increase in runoff rates and volumes can cause localized and/or
large scale flooding issues in the downstream system, It is important to control these increased
runoff rates and volumes in order to ensure reduction of flooding in the downstream system and
to control the potential effects of erosive flows on streams and waterways,
The City of Maplewood has adopted policies that require volume reduction for
redevelopment. The City's policies are in accordance with the RWMWD,
policies regarding runoff management. The City has also adopted a flood
has adopted policies that regulate minimum building elevations in regar,
surface waters, The City has developed the water quantity policies Iiste'
the water quantity goals of this Plan,
Table 6. Runoff Management and Flood C
1
in9fease with development; however,
~lnfain peak runoff rates below the
finfiltration to reduce runoff volumes
2
treatment of stormwater prior to discharge into surface
dition, the City encourages the use of treatment ponds and
storm water to reduce runoff rates and volume and to
a lakes and wetlands,
3
emen'fJmprovements shall be designed based on the critical storm
, ate development of, the drainage area,
4
, ' e storm water system shall have a protected emergency overflow
tructure (i,e,d, ale, spillway) into pond outlet structures to safely convey excess flows
, rger than the 1 OO-year (1 percent) event.
Mapl~ d will require minimum building floor elevations to be above the 100-year
, lain, in accordance with City and watershed district standards, At a minimum, the
st opening of any building shall be 2,0 feet above the 1 DO-year floodplain and/or
,0 feet above the spillway overflow elevation, whichever is greater.
6 Maintain existing intercommunity drainage patterns and solve any intercommunity
drainage issues through cooperation and collaboration with the adjoining city and the
appropriate watershed district.
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The RWMWD has completed hydrologic modeling for the water bodies within its jurisdiction,
RWMWD included the results in its Water Resources Management Plan, The results shows
include predicted 1 OO-year flood elevations, peak discharges, flood storage volumes, and
normal water elevations for ponds. The results also include information for the 2-year frequency,
24-hour storm event. Please refer to the RWMWD WRMP for more detailed information
regarding the hydrologic modeling,
The Federal Emergency Management Agency (FEMA) created a Flood
(FIRM) effective August 5,1986, for the City of Maplewood, Ramsey
updating the FIRM, Figure 10 in the Appendix shows the effective FIR
, Ramsey County. The Minnesota Department of Natural Resources an..
review and approve the new boundaries before they become the offiqi~f reg
boundaries.
Hydrologic and hydraulic models have been completed for several areas within the
Maplewood, One of the planned implementation activities for the City is to compile
different models into one city-wide model that provides more detail in selected ,ll~
relative to what has been modeled by the watershed districts, .,.,...,
C. Goal 3: Wetlands
The policies listed in Table 7 will be used as the basis
policies and strategies will apply to new developmen
within the City, Any wetland habitat on property to
management policies, as well as the rules and re
Figure 11 shows the locations and classificatio~/
, .s wetland alterations, Proof that applicants or designers have given
ns that do not require wetland alteration shall be reviewed before
any proposal that includes wetland alteration, Wetland alterations
'.;!must be mitig. ...e by the Wetland Conservation Act (WCA) requirements, as
administerECdJ:5y local government units (LGUs) (currently the watershed districts),
Cooper<ll~'with the watershed districts in their administration of the WCA and their
V)(EC!!~na Management Plans,
eek to restore previously existing wetlands and enhance existing wetlands,
5 Provide buffer zones of native vegetations around ponds and wetlands to provide
wildlife habitats, in accordance with the Maplewood Wetland Ordinance,
6 Minimize water level fluctuations (bounce) in wetlands or detention basins to prevent
adverse habitat changes,
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D. Goal 4: Erosion and Sediment Control
The City addresses erosion and sediment control in its ordinances and its NPDES MS4 Phase II
SWPPP. The City partners with the Ramsey-Washington Metro Watershed District to implement
its construction site erosion control inspection program, The policies listed in Table 8 are
intended to help the City achieve the erosion and sediment control goals of this Plan,
Table 8. Erosion and Sediment Control
Require erosion and sediment control (ESe) plans for alllandg(
defined by city ordinance, The ESC plans shall be consistentwith t
criteria of the watershed districts' plans, the Ramsey Erosion and Se
Handbook and the general National Pollutant Discharge ination S
construction storm water permit requirements,
2 Preserve and enhance natural vegetation to
3
As discussed previously in Goal1.,..lo'.iater quality problems are frequently linked to high
phosphorus and total suspend('l:g.!igl.\~S concentrations, Phosphorus is often transported to
surface water throug~::~9il erosiqrl.. runoff and wind erosion,) but can also be transported to
waters in a variety !)f:::9~~~[mecha Nevertheless, erosion control is extremely important in
the effort to improve1N~!~t::guality, sion and sediment deposition also can create pond
and drainageway perf ' , and ntenance problems,
Ponds, drainaggi ter bodies can be impacted by erosion and sediment from a
variety of sO[j[ces, inc!udi struction sites and winter street sanding operations, The coarse
sediment ac.cumulates in water bodies where runoff or flow velocities are relatively low, Usually
a sand d appears a . storm sewer outfall that is a visible indication of the effectiveness of
erosion sedime ntrol measures and the extent of road sanding activities of the past
winter dim('lnt ilds up over time, it reduces the capacity of drainage systems and the
pollut . l'capabilities of ponds by reducing dead storage volume (i.e., the volume below
the ou ion). Sediment from erosion can also significantly reduce infiltration rates in
basins or BMPs designed for volume control and/or groundwater recharge, Extending the life of
these facilities involves source control and elimination of material that causes the problem, and
maintenance of the systems on a regular basis, Regulatory aspects will control a major portion
of the sediment at the source, and an effective street sweeping program will also have a positive
impact.
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E. Goal 5: Groundwater
Groundwater is an important resource that needs to be replenished and protected for both
drinking water supplies and to preserve base flow conditions in streams and inflow to surface
waters and wetlands, The City's drinking water supply is serviced by the SI. Paul Regional
Water Services (SPRWS), Most of the SPRWS water supply comes from surface water
resources but the SPRWS will use groundwater as an alternative supply during special
circumstances. These circumstances include when there are taste and odor problem
conditions, or there are security concerns. This is one reason that it is important to
and protect the groundwater. A second reason is many of the lakes, wetlands, ~
waters within Maplewood rely on groundwater for replenishment.
The Ramsey County Groundwater Quality Protection Plan is available a .
the groundwater resources of the City of Maplewood, The City's infiltra
standards are a great start towards improving and enhancing the local g
Table 9 is a summary of the City's Groundwater related goals and policy.!
Table 9. Groundwater
andipbnd "dead" storage wherever
~rrn water runoff and to promote
2 Encourage use of grasse
groundwater supplies,
3 ndwater resource issues through public education and
4 ss failing individual sewage treatment systems (ISTS) or
be an inent public health threat, to ensure that systems are
~ ance with state requirements,
5 of on-site wastewater systems shall be in accordance with the
in Minnesota Rules, Chapter 7080, the Individuai Sewage Treatment
Act, and the City's ISTS ordinance,
The education and public involvement goal is a strategy that recognizes people want to be
involved in decisions that affect any facet of their life. The process of involving the public seeks
to create opportunities for the public to participate in the processes that lead to decision-making
and result in more public ownership in the outcome, The City has developed the education and
public involvement policies listed in Table 10 to help achieve the goals of this Plan, Education
City of Maplewood
Surface Water Management Plan
22
Draft #1 - June 2008
and public involvement activities are also requirements of the National Pollutant Discharge
Elimination System (NPDES) Permit.
Table 10. Education and Public Involvement
1 Continue to develop and distribute education materials to the publi
groups about the City's ordinances, policies and programs about w
groundwater, ISTS, wetlands, native vegetation, alternative land
control, pet wastes, recycling, trash disposal, leaf collection, pu
grass clippings, lawn chemicals and hazardous materials. Infor
via the City's monthly newsletter, local newspapers, cable tele
appropriate media,
2 The City will continue to provide opportunities for public i
neighborhood meetings, public hearings, mailed noti
resource decisions or projects,
3 The City will coordinate and consult with
commissions and committees on surface
4
The City will communicate with lake
groups,
appropriate civic and citizen
5 The City will communicate
groups,
The watershed distr . Ramse .... ..' ty currently have education and public involvement
activities efforts in the surfali&'water programs, These agencies make this information
available to the Ci.lY" rough their websites, but also on a case-by-case basis for
special progral}l~;OF even able to the City or City residents to participate in, The City will
continue to ~gek out thes .... ..... cation efforts to more effectively reach and inform residents,
businesse~.and City staf1'''()h the wide range of surface water management issues, The City
encoura ..,. the counti~~':and watershed districts to devote more time and energy to producing
educa . I tools, Slj..9I1':as brochures, videos, training sessions, newsletter articles, etc., that can
be use munic'il,llties throughout their jurisdictions,
The City has numerous lake associations and committees who focus on the interests and the
protection of the lakes and other water resources within the City limits. The City also has a
website where information regarding the City's committees and commissions, their mission
statements and past agendas and meeting minutes are available, As part of the NPDES MS4
Permit, the City has also posted their SWPPP on the website, As part of the NPDES program,
City of Maplewood
Surface Water Management Plan
23
Draft #1 - June 2008
the City is required to implement a public education and outreach program, along with a public
participation and involvement program and to incorporate public information into each of the
other four minimum control measures of the permit.
The City's website is an alternative medium to provide municipal information to both City
residents and those people who live outside the City, An electronic version of the completed
and approved Surface Water Management Plan will ultimately be accessible on the web,
Because the Plan has such a wide audience, from engineers and planners to developers,
citizens, scientists and educators, electronic access to the text and mapping creates e
understanding of the goals, policies and activities of this Plan,
The City will continue to distribute information on pertinent water and wetland::!:rian
issues via its quarterly community newsletter, and will promote opportuniti'"fo "
participate in water resources management activities, The City will also ongoing
both a City-wide and watershed level toward educating the public by di informa
its residents on responsible practices they should employ to protect w rces within the
"community. The program will educate residents on things such as the t using
phosphorus-free fertilizer and the proper use of a wide range of law ,
G. Goal 8: Financing
Paying for water management projects has beco
special assessments against benefited propertie,
improvements, However, the financial optiolls h"~\i~
uses an environmental utility program aSq:'l~eyico
storm water-related projects. The implerrl~ntation
state and federal rules, statutes and ;;lg~ncies tha :" r e the City to implement the
recommendations set forth in this 11'l1"\, and in turn implement financing goals and policies to
fund the program, Table 11 list Iicies that are intended to help the City achieve the
financing goal of this P n,
e 11. Financing
Maintaini1'l""flnancing strategy for surface water improvements utilizing a combination of
envirgm"mental utility fees, special assessments, surface water management plan
fleCtion charges, and storm water program grant funds,
The City will actively pursue grants, donations, and in-kind contributions to help fund
water resources management.
3 The City shall encourage the WDs to finance inter-community issues and projects,
City of Maplewood
Surface Water Management Plan
24
Draft #1 - June 2008
H. Goal 9: Maintenance and Inspection
Inspections help to spot potential problems before they become major problems, Routine
maintenance reduces the long-term costs related to drainage system maintenance, while
helping to achieve water quantity and quality goals, The application of development standards
ensures consistency in the work produced and the documentation of the constructed systems,
Appropriate land use controls can be used to maximize the preservation of the natur Idrai age
systems and to control increases in runoff rate, volume and pollutant loading, Inspe d
long-term maintenance of these systems is the critical final and ongoing step t n
planned long-term benefits.
. Evaluating problems, needs, and opportunities;
. Defining goals and objectives of inspection and maintenance
. Establishing policies, programs and priorities; and
. Developing criteria and standards for evaluating performa
improvements where and when needed.
There are four basic steps to developing an effective storm drainage m<;j' .
One often forgotten aspect of storm water facility mainten... ." onds, Maintenance
agreements with private pond owners can ensure thalpondsElre ood operating
condition andm~\routin~ maintenance occurs, An ~xampIMP:" intenance agreement is
provided in ,i\pp~[1diX,: that can be modified to <3'dares rang~J'bf BMPs (e,g" ponds,
infiltration basins, bioretention areas, grit chambfl'[~: et, eCc:immended maintenance activities
and schedules for a wide range of BMPs caD bg,;$' . 'on fTlo:tny online sources including
http://www,stormwatercenter,net and theMltln~s ater Manual. Documentation or
review comments and changes and ac;q~isition of',I'TPIi!il onding easements are also important
considerations during the development':feview procesS:
Each of the four essential elem ove is covered by this SWMP. However, to be effective,
the need for good managemen ed for good data; and the need for sound financing must
be addressed, Man oncei ' ,tenance plans are never fully implemented because of
the lack of funding,' and c ous source of revenue is vital to an effective
maintenance progr 'ty has ]source of revenue in the Environmental Utility Fund and
has developed th~ ble 12 to support the maintenance goals of this Plan,
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Surface Water Management Plan
25
Draft #1 - June 2008
Table 12. Maintenance and Inspection
The City will continue to implement a maintenance and inspectio
resource facilities (e,g" ponds, water quality treatment BMPs, st
outfalls to waters, etc,), The City's maintenance and inspection
requirements of the NPDES Phase II MS4 Storm Water Progra
2 The City will require maintenance of privately constructed watl1
through formal development or maintenance agreements, CifY'will
with the watershed district programs that may overlap,
3
The City shall require adequate maintenance-relate.d,
water resource management facilities, ..
W,O',," "'w' U.N. w_,
......... _......_, ,....,.__'..w.m.
__.w'wo_ ,__""'w __......,
4 Pond and detention facility clean out activiti!iS"will qqrhPly )oII!!Ii'\lie requirements of the
Minnesota Wetland Conservation Act, the,J\ilinne~~fa Department of the Natural
Resources, the Minnesota Pollution Cql"i\(ol Atlcy an,gJ\he standards of this plan,
5 The City will continue its operatig@'al"itFrna" . e"activities that preserve water
quality, including street sweeping, 'pond 8n~igrit;gli'amber maintenance and appropriate
application of deicing compl.lnds that l{al;:\!'JG!is"public safety and environmental
protection, ' . ,. ,
The City assumes t,permit all land alteration activities and enforcing the standards
and policies set foJian, Ramsey-Washington Metro Watershed District (RWMWD),
Capitol Region.", ers e ,;....,.... t (CRWD), and Valley Branch Watershed District (VBWD) also
review and ri:lqUire a permi!fgr"any proposed land alteration of one acre or greater within the
City, The I3I,iYMWD and QBWD serve as the LGU for the Wetland Conservation Act, and
assume .. role of per;\pifting all wetland impacts,
ota Qi:lRanment of Natural Resources has authority over issues relating to water and
''tEld as State Protected Wetlands and Waters, The U,S, Army Corps of
Engine authority relating to all wetlands identified by the U,S. Fish and Wildlife Service's
National Wetland Inventory,
Ramsey County and the Minnesota Department of Health have regulatory authority over
groundwater issues within the City. Erosion control falls under several jurisdictions including the
City, the watershed districts, and the MPCA. The MPCA also has regulatory authority over
individual septic systems within the City limits,
City of Maplewood
Surface Water Management Plan
26
Draft #1 - June 2008
The City has developed the policies in Table 13 to help ensure that the regulatory responsibility
goals of this Plan are clearly understood, met and addressed on an ongoing basis,
Table 13. Regulatory Responsibilities
1 This plan and all subsequent amendments shall be consistent wit
agencies,
2 The programs and standards of this plan shall be implemented
regulatory responsibilities and, as needed, at the direction of th
may be amended as necessary to remain current.
3 The City will develop and impiement ordinances and programs to re
compliant with local, regional and national programs rei. 0 storm
management. .
4
The watershed districts have regulatory
programs and wetland management.
spective permitting
5
The Minnesota Department of Natural
Engineers have regulatory authority
respective inventories,
Army Corps of
wetiands identified by their
The NPDES MS4 Permit Prog[' discussed in more detail in the Introduction section of
this Plan. The City wil ntinue' ment its Storm Water Pollution Prevention Program
(SWPPP) and upd WPPuired, as the program continues to evolve, In addition
to NPDES program 'bilities,.. "City must continue to implement a number of other
regulatory activities rcSurfad'l'water management. Table 13 provides the City's goals
and policies rela~13C'l tory responsibilities,
As discussedHH the water.... ty and quantity goal sections, a relatively new issue has recently
gained mllQnmore attent(On over the past few years for 30 selected municipalities due, in large
part, to t~~revised NPc.Iii!ES MS4 Permit. The new non-degradation requirements of the revised
NPDES;\p.!:)rmit may,;f;;:teate the need for stricter controls in many communities, including
Maple." "ii~degradation portion of the permit required Maplewood to assess the
chang of three pollutants (runoff volume, total suspended solids, total phosphorus)
over tw periods (approximately 1988 to 2005 and 2005 to 2020), The intent of these
requirements is for the cities to develop a plan to address any increased loading of one or more
ofthe three pollutants, The City completed its Non-Degradation Report in December of 2007,
City of Maplewood
Surface Water Management Plan
27
Draft #1 - June 2008
Maplewood
.
M
nnesota
Surface Water Management P~,a
IV. Surface Water Resources
A.. Overview
The current condition of the Maplewood's surface water ,',
some and severely impaired in others. There is a significant need
waters and at the same protect the lakes and wateuesou . s th
condition, Protecting and improving the quality o( Cit a
goals of this Plan. To support the City's goals t
bo .
w
su
is intended to describe the key water bodies within Maplewood
ative priority or management classification, Each water body or special
ed in the following sections, along with a summary of the information collected
and an for each water body to date, an assessment of any problems, and recommended
implementation activities, Much of this information is taken form the respective watershed
district plans and studies previously completed,
City of Maplewood
Surface Water Management Plan
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Draft #1 - June 2008
Table 14. Water Management Classificationfor Maplewood Water Features
B. Impaired Waters
Waters that are on the Minnesota Pollution Control Agency's Total
impaired waters for one or more pollutants are shown in Table 1
To date, approximately 8 percent of Minnesota's river mile nt of Minnesota's lakes
have been tested for pollution problems. Approximately~:,!- n e tested are polluted
with human and animal waste, phosphorus, suspend~9:'soli d ,mercury, As more of the
states' surface waters are tested for pollution probl~Q:is, ate y,iill continue to add surface
waters to the TMDL list. It is reasonable to assume~that... more"waters are assessed, then
more waters will be listed as impaired in subseqtl'" biennialcyCies, When studies are
completed, the TMDLs will likely be used bYJh~JM .., 'tal entities to further prioritize
management actions and establish addi ' ":1.1 regu trois,
The City will consider the listing of t
actively manage the activities in
pollutants (primarily nutrients a.
practices have a hig evel 0
ponds, The City's in, requ
receiving waters,
akes in Tab e 15 in future management decisions and
ntributing watersheds to limit the delivery of these
ent) to these waters, Infiltration best management
sphorus removal than the traditional wet stormwater
help with the reduction of phosphorus entering the
City of Maplewood
Surface Water Management Plan
29
Draft #1 - June 2008
Table 15. Draft 2008 TMDL Listed Impaired Waters in Maplewood
Aquatic
Recreation
62-0007-00 Aquatic
Consumption
Aquatic Mercury in Fish r
Consumption
62-0010-01 Aquatic
Consumption
62-0010-02 Aquatic
Recreation
Aquatic pel"iluoroqc aneis't.ilfonate
Consumption 'c,(pFin Fis'lWfissue
62-0011-00 Aquatic tlElItrophication Yes
Recreation lologjgal.lndicators
62-0012-00 Aqu"tip' Yes
Recreation
erfluorooctane Sulfonate
(PFOs) in Fish Tissue
Perfluorooctane Sulfonate
(PFOs) in Fish Tissue
NutrientlE utroph ication Yes
Biological Indicators
Mercury in Fish Tissue
Aquatic Mercury in Fish Tissue
Consumption
Aquatic Life Chloride
Aquatic N utrientlEutroph ication
Recreation Biological Indicators
Aquatic N utrientlEutrophication
Recreation Biological Indicators
82-0166-00
Aquatic Mercury in Fish Tissue
Consumption
City of Maplewood
Surface Water Management Plan
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Draft #1 - June 2008
According to the MPCA's Statewide Mercury TMDL Study, most of the mercury in Minnesota's
fish comes from atmospheric deposition, with approximately 90 percent originating from outside
the state, Because mercury has regional TMDL implications, little effort will be placed on TMDL
recommendations related to mercury for these waters as part of this planning effort. The City will
continue to review recommendations for mercury that may be offered by EPA and/or MPCA to
see if the regional approach to mercury has any future implications on the City, More detail on
the progress of the statewide mercury TMDL process can be found on the MPCA's website,
C. lakes
The City of Maplewood has eleven lakes located within or adjacent to City
Plan includes a summary of the physical and water quality features of thes
summary of the physical characteristics of the lakes located in Maplewo
Table 16. Lake Physical Characteristics
g, canoeing, picnicking,
ife habitat, and aesthetic
viewing,
Canoeing and swimming,
Swimming, waterskiing,
boating, and limited wildlife
habitat.
Boating, fishing, canoeing.
picnicking, and viewing,
859,5 Boating, canoeing, fishing,
picnicking, viewing, and
limited wildlife habitat.
859.6
18
989.6
857.5 Swimming, fishing, picnicking,
and viewing,
Canoeing, picnicking, wildlife
habitat, and viewing,
Swimming, fishing, picnicking,
waterskiing, canoeing, and
aesthetic viewing,
70
6
46
963,3
Swimming, waterskiing,
boating, fishing, canoeing,
picnicking, viewing, and
limited wildiife habitat.
Aesthetic viewing, wildlife
habitat and picnicking,
23
9
City of Maplewood
Surface Water Management Plan
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1. Beaver Lake
Beaver Lake is located in the central portion of the City, and collects drainage from the cities of
Maplewood, SI. Paul and Oakdale, Beaver Lake has a surface area of 65 acres and a maximum
depth of 11 feet. The Ordinary High Water (OHW) level for Beaver Lake is 950,8 ft above Mean
Sea Level (MSL), There is no public boat access to this lake, but there is a fishing pier.
According to the RWMWD Plan the following studies related to Beaver Lake and/or its
tributaries have been completed:
. Report to RWMWD on the Water Quality of Beaver and Wakefield
County Department of Public Works, March 1985,
. Report to RWMWD on the Water Quality of Beaver and
County Department of Public Works, June 1986,
. Beaver Lake Phase I Report: Summary of Current Conditions.
Barr Engineering, August 2001,
. Beaver Lake Strategic Lake Management Plan, Prepared for
Engineering, March 2005,
. DRAFT Feasibility Study for Replacement of Beaver Lake
by Barr Engineering, June 2005,
. DRAFT Beaver Lake Total Maximum Daily Load Re
Engineering, September 2005,
. Discussion of Water Quality Goals for Beaver L" e, Prepared for
RWMWD by Barr Engineering, January 200El':''"c''
Beaver Lake outflows directly into the Beltline Int.
discharges into the Mississippi River. The RWrvl
Beaver Lake watershed, which are includ"lp')in the
The RWMWD completed a Strategici.c"aRe Manag, Plan (SLMP) on Beaver Lake in 2005,
The information from the SLMP wa~,Ilsed to complete the Beaver Lake TMDL Report, which is
currently in draft form, Beaver L impaired for the pollutants total phosphorus and mercury,
The TMDL Report foc ses on I jJ water quality within the lake related to the total
phosphorus loading ore i,,,, '", """,n regarding the SLMP and the draft TMDL for Beaver
Lake refer to the R ebsitej:i;~m;~!RWMWD lists water quality goals in its Water
Resources Manag , The Qity"of Maplewood adopts these goals, which are shown in
Table 17, "
""m'mary of Water Quality Goals for Beaver Lake
90 ug/L
1 07 ppb
Chlorophyll a
Secch i Disc
Note: 1 ug/L = 1 ppb
3,6 ft
25,1 ppb
525ft
19 ug/L
City of Maplewood
Surface Water Management Plan
32
Draft #1 - June 2008
The City completed the Non-Degradation Report in 2007, This report analyzed the change in
pollutant loading for runoff volume, total suspended sediment, and total phosphorus from 1988 -
2005, and the proposed change from 2005 - 2020, According to the Report, the Beaver Lake
drainage area has experienced an increase of 3% in impervious surface area, 53,8 acre-feet
increase in runoff volume, 2,1 ton increase of total suspended sediment loading, and an
increase of 38,8 pounds of total phosphorus between 1988 and 2005, It is anticipated that the
Beaver Lake drainage area will experience an increase of 8% impervious surface area between
2005 and 2020, Assuming the City's stormwater treatment requirements remain in eff~ct, itj~'
anticipated that between 2005 and 2020 the runoff volume will increase by 16,0 acrgif~gt,,!IKe
total suspended sediment loading will decrease by 1,9 tons, and the total ph os 0 ,......,' .' will
increase by 8,0 pounds,
Maplewood Nature Center staff has partnered with the RWMWD, and t
completion of the Neighborhood Wilds Program with residents living in
Neighborhood, which is located along the east side of Beaver Lake, Th
an effort to remove buckthorn around the Preserve, install raingardens,
and install native plantings, This program led to an applied research Rrojec
canary grass in a neighborhood wetland, ..
,..
The Maplewood Nature Center staff also partnered with the.I3!.:., d residents of a
Nebraska Avenue neighborhood in a wetland restorationpEoject,< L.of the restoration was
to restore a diverse native plant community. The RWrvi.\I\I0eontlnu onitor the site, and for
more information regarding the Nebraska Avenue Tg!jl\Netl91nd plE!.~se see the RWMWD
website,
2. Carver Lake
Carver Lake is located mostly within th~,9ifY of , with a small portion of the watershed
located in Maplewood, Carver Lake h,?~a surfac .......... aof 51 acres and the maximum depth is
36 feet. The OHW level is 908.8 feet'above MSL. The lake is mostly used for canoeing and
swimming, and there is a public ...... located on the southeast side of the lake. Carver Lake
Park occupies much 0 he sh n Woodbury.
ing studies related to Carver Lake and/or its tributaries
According to the R
have been complet
. jty Goals for Beaver Lake and Carver Lake. Prepared for
ering, January 2006.
. Sutlwalershed Infl tion - Carver Lake Subwatershed; Woodbury MN, Memorandum
r~ppii prepared.tlyBarr Engineering, March 2003 Draft,
. ",y,aluation ofY~aler Quality Effects from Implementation of Infiltration Practices in
'tyer LaKg!\Natershed - Memorandum prepared by Barr Engineering, October 2000.
'<kEi Strategic Lake Management Plan, Prepared for RWMWD by Barr
ing, October 2000,
. reenways and Natural Areas Report & Vegetative Cover Inventory, RWMWD, June
1999,
. 1991 Water Quality Monitoring of Carver Lake, Prepared for RWMWD by Barr
Engineering, June 1992,
. Carver Ravine Hydrologic Study, Prepared for RWMWD by Barr Engineering, 1991,
. Carver Lake Watershed Management Plan, Prepared for RWMWD by Barr Engineering,
February 1979,
City of Maplewood
Surface Water Management Plan
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Draft #1 - June 2008
Carver Lake outflows into the Fish Creek subwatershed, which discharges into Eagle Lake, a
backwater of the Mississippi River. The RWMWD has completed hydrologic modeling for the
Carver Lake watershed.
Only 252 acres of the Carver Lake subwatershed is located within the City of Maplewood, Most
of the RWMWD's water quality goals identified in its Plan pertain to the City of Woodbury, as
that contains most of the drainage area to Carver Lake. The RWMWD lists water qual" g s in
its Water Resources Management Plan. The City of Maplewood adopts these goals re
shown in Table 18.
Table 18. Summary of Water Quality Goals for Carve~"!:,,
Total Phosphorus
60 ug/L
Chlorophyll a
20 ug/L
Secchi Disc
Note: 1 ug/L - 1 ppb
According to the City's Non-Degradation Report, t
Maplewood) has experienced an increase of 9o/c .
increase in runoff volume, 2,0 ton increase qf tq
increase of 19.8 pounds of total phosphqrl)j~;be .
Carver Lake drainage area will experiE?ri'cetan inc
2005 and 2020, Assuming the City's,~t&rmwater ent requirements remain in effect, it is
anticipated that between 2005 a'..' 0 the runoff volume will increase by 6,2 acre-feet, the
total suspended sediment load' emain the same, and the total phosphorus load will
increase by 4.8 poun n an a asis,
3. Gervais Lake
Gervais Lake is 199.ate ithin the City of Little Canada, with a small portion of the lake.
located in Map!EiljN60d, G ke has a surface area of 234 acres and the maximum depth is
41 feel. The,:lJ)F1W level is feet above MSL. The lake is mostly used for swimming,
waterskiin.g'iiihd boating". h limited wildlife habitat. The lake has boat access from Spoon Lake
and a RCi,msey Countyrks swimming beach,
Accorq
tri buta
o e,~ WD Plan the following studies related to Gervais Lake andlor its
een completed:
.
Phalen Chain of Lakes Surface Water Management Plan, Prepared for RWMWD by Barr
Engineering, November 1988,
Gervais Mill Pond Feasibility Study. Prepared for RWMWD by Barr Engineering,
November 1991,
Kohlman and Gervais Lake Diagnostic Study. Prepared for RWMWD by Barr
Engineering, 1994.
.
.
City of Maplewood
Surface Water Management Plan
34
Draft #1 - June 2008
Gervais Lake is the largest lake in the Phalen Chain of Lakes, The lake c
its immediate drainage area, Gervais Creek, and Kohlman Lake, The la
an outlet channel to Spoon Lake, which then drains to Keller Lake.
. Addressing the Water Quality Benefits of Smaller Wet Detention Ponds, Prepared for
RWMWD by Barr Engineering, 1995,
. Draft Phalen Chain of Lakes Strategic Lake Management Plan. Prepared for RWMWD
by Barr Engineering, October 2004.
. Phalen Chain of Lakes Study of Untreated Tributary Drainage and Other Improvement
Areas, Prepared for RWMWD by Barr Engineering, October 2005.
. Phalen Chain of Lakes Summary Report and Final Lake Management
Recommendations. Prepared for RWMWD by Barr Engineering, October 2005,
. Draft Phalen Chain of Lakes Carp Population Study. Prepared for RWMWD ......,
Engineering, November 2006.
The RWMWD completed a SLMP for Lake Gervais which included wa
analysis of historical water quality monitoring data, In the SLMP it w .
approximately 76% of the annual phosphorus loading to Gervais Lake is fro
drainage district, which is located mostly in Maplewood, The Ci
standards for development and redevelopment will help redlJ~'
subwatershed in the future. The RWMWD lists water qU<j!ilY'g'
Management Plan, The City of Maplewood adopts the9~'[go
Table 19. Summary of Water QU<jUty
10 uglL
14,5 ppb
5.5ft
5.6ft
Note: 1 ug/L-
Only 252 acres of ,ake drainage area are located in Maplewood. According to the
City's Non-Degra tion R e Gervais Lake drainage area (located in Maplewood)
experienced"y,ei'y little ch n impervious surface area, runoff volume, total suspended
sediment IQ~aing, and to phosphorus between 1988 and 2005, It is anticipated that the
Gervais"I1E~Re drainag~: ea will experience an increase of 11 % impervious surface area
betweelt::i2.b05 and i2.Q20. Assuming the City's stormwater treatment requirements remain in
effect, nticipatea that between 2005 and 2020 the runoff volume will increase by 0,6 acre-
feet, t~spended sediment loading will decrease by 1,2 pounds, and the total
phospn oad will decrease by 2,3 pounds,
4. Keller Lake
Keller Lake is located entirely within the City of Maplewood. Keller Lake has a surface area of
72 acres and the maximum depth is 8 feet The OHW level is 859,6 feet above MSL. The lake is
City of Maplewood
Surface Water Management Plan
35
Draft #1 - June 2008
mostly used for boating, fishing, canoeing, picnicking, and viewing, The lake has boat access
from Spoon Lake,
According to the RWMWD Plan the following studies related to Keller Lake and/or its tributaries
have been completed:
. Phalen Chain of Lakes Surface Water Management Plan. Prepared for RWMWD by Barr
Engineering, November 1988,
. Phalen Outlet Hydraulic Study. Prepared for RWMWD by Barr Engineering,
1990.
. Draft Phalen Chain of Lakes Strategic Lake Management Plan. Prep
by Barr Engineering, October 2004,
. Draft Kohlman and Keller Lakes Total Maximum Daily Load RepQ
RWMWD Barr Engineering, July 2005,
. Internal Phosphorus Load Study: Kohlman and Keller Lakes, P
Barr Engineering, October 2005,
. Phalen Chain of Lakes Study of Untreated Tributary Drainage d
Areas, Prepared for RWMWD by Barr Engineering, October2005,
. Phalen Chain of Lakes Summary Report and Final Lak ~', ement
Recommendations. Prepared for RWMWD by Barr 1211 October 2005,
. Highway 36 and 61 Intersection Enhanced Sand filfrati ~ards' Parking Lot
Pervious Pavement, Feasibility Report, Prepareo;for R~ arr Engineering,
October 2006. ~
The Gervais Lake subwatershed discharges to f\~ L
Lake's immediate drainage area, Keller Lake di$cRi1rg'~
RWMWD has completed hydrologic mod~li~g fait ~~ 0
The RWMWD completed a StrategicJ.fake Mana t Plan (SLMP) on the Phalen Chain of
Lakes in 2004, The information frolTt[lhe SLMP was used to complete the Kohlman and Keller
Lakes TMDL Report, which is cy y in draft form, Keller Lake is impaired for the pollutant
total phosphorus, The~IMDL cuses on improving water quality within the lake related
to the total phosphoruSylbading, information regarding the SLMP and the draft TMDL
for Keller Lake refe WM ite, The RWMWD lists water quality goals in its Water
Resources Manage . The G;j of Maplewood adopts these goals, which are shown in
Table 20,
57 ppb
Chlorophyll a
20 ug/L
31 ppb
Secchi Disc
Note: 1 ug/L = 1 ppb
3,3 ft
3,3 ft
City of Maplewood
Surface Water Management Plan
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Draft #1 - June 2008
According to the City's Non-Degradation Report, the direct Keller Lake drainage area
experienced an increase of 2% impervious surface area, 40.6 acre-feet increase in runoff
volume, 18,6 ton decrease of total suspended sediment loading, and an increase of 64,2
pounds of total phosphorus between 1988 and 2005, It is anticipated that the Keller Lake direct
drainage area will experience an increase of 10% impervious surface area between 2005 and
2020, Assuming the City's stormwater treatment requirements remain in effect, it is anticipated
that between 2005 and 2020 the runoff volume will decrease by 38.4 acre-feet, the total
suspended sediment loading will decrease by 16,3 tons, and the total phosphorus load will
decrease by 63,1 pounds, These numbers show that through water quality BMPs th
loading to Keller Lake will be reduced in the direct drainage area, .
. Phalen Chain of Lakes Surface Water q,for RWMWD by Barr
Engineering, November 1988.
. Draft Kohlman Basin Feasibility Study. Prep
September, 1993.
. Draft County Ditch 7A Feasibility Study. l\ySiMWD by Barr Engineering,
1994.
. Kohlman Basin Project: Prelimina P"repared for RWMWD by Barr
Engineering, 1996.
. Draft Phalen Chain of Lakes S egic La agement Plan, Prepared for RWMWD
by Barr Engineering, Octobe 004,
. Draft Kohlman and Kelle. s Total Maximum Daily Load Report, Prepared for
RWMWD by Barr EngiJuly 2005,
. Internal Pho s Loa 'Kohlman and Keller Lakes, Prepared for RWMWD by
Barr Engine ctober
. Phalen Chain Stud ntreated Tributary Drainage and Other Improvement
Areas, PrepOil MWDby Barr Engineering, October 2005.
. Phalen Qlj,afri 0 [ ummary Report and Final Lake Management
Recorrji1tendation. .... ared for RWMWD by Barr Engineering, October 2005,
. Draft/Kohlman Basin rea Water Quality Enhancements Study. Prepared for RWMWD
b 1m Enginee[lng, October 2006,
. Phalen Qbain of Lakes Carp Population Study. Prepared for RWMWD by Barr
eerin .'November 2006.
5. Kohlman Lake
Kohlman Lake is located entirely within the City of Maplewood,
area of 74 acres and the maximum depth is 9 feet. The OHW level is 8
The lake is mostly used for boating, fishing, canoeing, picnicking, vie"",!!,!
habitat. There is no direct boat access to the lake, but it can be acce~sed v
According to the RWMWD Plan the following studies related to Kohlman Lak
tributaries have been completed:
The Koake subwatershed receives flows from Willow Creek and Kohlman Creek, These
two cree s discharge to Kohlman Basin, which is a large wetland upstream of Kohlman Lake
that provides significant water quality treatment of stormwater before it discharges to Kohlman
Lake, The Kohlman Lake outlet is a channel that discharges to Gervais Lake.
The RWMWD completed a Strategic Lake Management Plan (SLMP) on the Phalen Chain of
Lakes in 2004, The information from the SLMP was used to complete the Kohlman and Keller
Lakes TMDL Report, which is currently in draft form, Kohlman Lake is impaired for the pollutant
City of Maplewood
Surface Water Management Plan
37
Draft #1 - June 2008
total phosphorus, The TMDL Report focuses on improving water quality within the lake related
to the total phosphorus loading, For more information regarding the SLMP and the draft TMDL
for Kohlman Lake refer to the RWMWD website, The RWMWD lists water quality goals in its
Water Resources Management Plan, The City of Maplewood adopts these goals, which are
shown in Table 21,
Table 21. Summary of Water Quality Goals for Kohlman Lake
Chlorophyll a
30 ug/L
Secchi Disc
Note: 1 ug/L = 1 ppb
2,5ft
The RWMWD determined in its analysis of the water quality in. n Lake t at the lake
suffers from both internal and external phosphorus loading recommends that the
only cost-effective BM P to treat the in-lake phosphorus Ig.. rtreatment. Through
chemical treatment and additional BMPs in the waterl?hi~a thE):RVV believes Kohlman Lake
can reach the total phosphorus goal of 90 ug/L. The:RwM)lJlDlist: everal management
recommendations for Kohlman Lake in the Phalen,JGhain<ofLak ':SLMP and subsequent
studies,
According to the City's Non-Degradation:R~port, t ohlman Lake drainage area
experienced an increase of 6% imper\lig).Js'surfa . ..., 9,7 acre-feet increase in runoff
volume, 13.1 ton decrease of total sLJ~pended se Iinent loading, a(ld a decrease of 23,1 pounds
of total phosphorus between 1981,t ... 2005, It is anticipated that the Kohlman Lake direct
drainage area will experience se of 16% impervious surface area between 2005 and
2020, Assuming the's stor ,f'1reatment requirements remain in effect, it is anticipated
that between 2005,.. 20 the,:)~j'f,~8Iume will increase by 11.6 acre-feet, the total
suspended sedimen. .g will de8r~?se by 5.4 tons, and the total phosphorus load will
decrease by 3,0 pOU(ltr: .,. e nUnloers show that through water quality BMPs the pollutant
loading to Kohlm:;!rJ:lLa en and will continue to be reduced in the direct drainage area,
6. Lake Pha.len
"""", ",
....,_"_.,,. rww.
w_o --
-,,-,.,.;' -,.-'"
",-.. "........".
The norti'jgrn portion of Gake Phalen is located within the City of Maplewood, but the majority of
the lake":' located in,S! Paul. Lake Phalen has a surface area of 198 acres and the maximum
depth.i I.IIj@'OHWlevel is 857,5 feet above MSL. The lake is mostly used for
swim 'g: picnicking, and viewing, The lake has a public boat access and a swimming
beach,
According to the RWMWD Plan the following studies related to Lake Phalen and/or its
tributaries have been completed:
. Report to RWMWD on the Water Quality of Beaver and Wakefield Lakes, Ramsey
County Department of Public Works, March 1985,
City of Maplewood
Surface Water Management Plan
38
Draft #1 - June 2008
. Phalen Chain of Lakes Surface Water Management Plan, Prepared for RWMWD by Barr
Engineering, November 1988,
. Phalen Outlet Hydraulic Study, Prepared for RWMWD by Barr Engineering, February
1990,
. Draft Phalen Chain of Lakes Strategic Lake Management Plan. Prepared for RWMWD
by Barr Engineering, October 2004,
. Phalen Chain of Lakes Study of Untreated Tributary Drainage and Other Improvement
Areas, Prepared for RWMWD by Barr Engineering, October 2005.
. Phalen Chain of Lakes Summary Report and Final Lake Management
Recommendations, Prepared for RWMWD by Barr Engineering, Octob~p,2
Lake Phalen receives discharge from Keller Lake through a channel betwj?~rfKj?!L
Lake Phalen, and is the most downstream lake in the Phalen Chain of L .""ke Pha
receives discharge from Round Lake and the surrounding drainage are ake has
outlets that are designed to keep the lake at an elevation of 857,5 MSL.
The RWMWD completed a SLMP for Phalen Chain of Lakes which i ,
modeling and analysis of historical water quality monitoring data, In the SL
that approximately 82% of the annual phosphorus loading to La len is fr the Keller
Lake drainage district, which is located mostly in Maplewooct,l" stormwater
management standards for development and redeveloPIll!iinr .ce phosphorus
loading from the subwatershed in the future. The RWi\1.)6\ID lis! " ity goals in its Water
Resources Management Plan. The City of MaplewoqYadopt~;f oals, which are shown in
Table 22,
10 ug,lL
7.9 ppb
5.25 ft
8,9 ft
ed from an. .." e phosphorus loading model that internal phosphorus loading to
Lake Phalep as negligipl~during the summer months, and that the lake is currently meeting
lJality goal fo:r'fotal phosphorus,
Accor El.Q!!Y's Non-Degradation Report, the direct Lake Phalen drainage area located
in Ma .perienced an increase of 2% impervious surface area, 55.4 acre-feet increase
in runoff, e, 32,5 ton decrease of total suspended sediment loading, and a decrease of
12,9 pounds of total phosphorus between 1988 and 2005, It is anticipated that the Lake Phalen
direct drainage area will experience an increase of 7% impervious surface area between 2005
and 2020, Assuming the City's stormwater treatment requirements remain in effect, it is
anticipated that between 2005 and 2020 the runoff volume will decrease by 109,9 acre-feet, the
total suspended sediment loading will decrease by 28,5 tons, and the total phosphorus load will
City of Maplewood
Surface Water Management Plan
39
Draft #1 - June 2008
decrease by 143,9 pounds. These numbers show that through water quality BMPs the pollutant
loading to Lake Phalen has been and will continue to be reduced in the direct drainage area,
7. Round Lake
Round Lake is located entirely within the City of Maplewood, Round Lake has a surface area of
30 acres and the maximum depth is 9 feet. The lake is mostly used for canoeing, picnicking,
wildlife habitat, and viewing, Round Lake discharges to Lake Phalen through two cha Is .,and
is surrounded by Ramsey County Park land,
. Report to RWMWD on the Water Quality of Beaver and Wakefi
County Department of Public Works, March 1985,
. Phalen Chain of Lakes Surface Water Management Plan, Prepg
Engineering, November 1988,
. Phalen Outlet Hydraulic Study, Prepared for RWMWD by Barr Engin
1990, , ,.~....
. Draft Phalen Chain of Lakes Strategic Lake ManagemEt
by Barr Engineering, October 2004.A:~i:'.
. Phalen Chain of Lakes Study of Untreated Tribll.tary Df~magg Other Improvement
Areas, Prepared for RWMWD by Barr Engingl!irihg, gptobe~c2005,
. Phalen Chain of Lakes Summary Report anCl"!=ingl,l0ake Mahagement
Recommendations, Prepared for RWM WEn "eering, October 2005,
According to the RWMWD Plan the following studies related to Lake Phalen
tributaries (including Round Lake) have been completed:
According to the RWMWD Plan, the Distri r a Strategic Lake Management
Plan for Round Lake, Round Lake is lis the pollutant total phosphorus, The
TMDL Study dates are to begin in 20:... nd finis 16. The RWMWD will be turning the
SLMP into the draft TMDL for Ro q~Lake, The RWMWD lists water quality goals in its Water
Resources Management Plan, T 'of Maplewood adopts these goals, which are shown in
Table 23,
ater Quality Goals for Round Lake
20 ug/L
3.3ft
14,9 ppb
6,9 ft
Note: 1 ug/L; 1 ppb
8. Silver Lake
Silver Lake is located partially within the City of Maplewood and North St. Paul. Silver Lake has
a surface area of 72 acres and the maximum depth is 18 feet. The lake is mostly used for
swimming, fishing, canoeing, picnicking, waterskiing, and viewing, Silver Lake discharges to
City of Maplewood
Surface Water Management Plan
40
Draft #1 - June 2008
Silver Lake discharges east to a large wetland located on the east side of Century Avenue, It is
tributary to the Valley Branch Watershed District's flood control project, and therefore it is very
important to maintain the existing outlet and high water elevations of the lake,
The VBWD has set water quality goals for the different types of lake in the District. Silver Lake
has an "Excellent" ranking, The goal of an excellent ranking is for the summer average total
phosphorus concentrations to be equal to or less than 40 ug/L, and the VBWD would prefer the
total phosphorus concentration in Silver Lake to be equal to or less than 30 ug/L. Accgrding(o
the VBWD Plan, the total phosphorus concentration in Silver Lake has exceeded 4 ..'.or
times and 30 ug/L ten times between 1990 - 2004, The City of Maplewood ado ts D's
water quality goals for Silver Lake, The City of Maplewood adopts these gOql own
in Table 24,
Table 24. Summary of Water Quality Goals for Silv
Chlorophyll a
Secchi Disc
Note: 1 ug/L = 1 ppb
8,9 ft
Before 1985 Silver Lake experienced winterJis establishment of a
gamefish population, Ramsey County ha an r aeration system since 1985 that
has enabled a gamefish population to.<il lop, T~i~"RgpUlation aids in management of the
bottom-feeding fish which can contri!?gte to degradihgwater quality. Ramsey County continues
to operate the winter aeration syst ....'.... and the gamefish population in Silver Lake continues to
flourish. As a result of this cha h population the water quality in Silver Lake continues to
improve,
I n discussions with t
concern is the chann
Park, The City int<)J"!9
on the inlet pipER:already.
improvemen 'planned
ershed Engineer, one area that may be an erosion
egmen ading into Silver Lake in the northwest portion of Joy
this area further and confirm if a flow restriction was installed
is work will be considered as part of the Joy Park
8 and 2009.
ke is. Ie. ed mostly within the Cities of Oakdale and Landfall, with Maplewood
e shoreland in the southwest corner of the lake, Tanners Lake has a surface
area of s and the maximum depth is 46 feet. The OHW level is 963,3 feet above MSL.
The lake is mostly used for boating, fishing, canoeing, picnicking, and viewing. There is a
swimming beach and boat access in Tanner Lakes Park, which is operated by the City of
Oakdale,
According to the RWMWD Plan the following studies related to Tanners Lake and/or its
tributaries have been completed:
City of Maplewood
Surface Water Management Plan
41
Draft #1 - June 2008
. Grant Application to Conduct a Phase I Diagnostic/Feasibility Study of Water Quality
Problems and Restorative Measures for Tanners Lake (Washington County, Minnesota).
Prepared for RWMWD by Barr Engineering, April 1987,
. Phase I Diagnostic/Feasibility Study of Water Quality Problems and Restorative
Measures for Tanners Lake, Prepared for RWMWD by Barr Engineering, May 1989,
. Tanners Lake Outlet Hydrologic Study, Prepared for RWMWD by Barr Engineering,
September, 1993,
. Clean Water Partnership Project Implementation Grant Application to Cond
II Lake Improvement/Protection Study of Tanners Lake (Washington
(Draft), Prepared for RWMWD by Barr Engineering, October 1993,
. Diagnostic/Feasibility Study of Water Quality Problems and Restor
Tanners Lake, Prepared for RWMWD by Barr Engineering, Octo
. Management Alternatives Report on the Diagnostic Feasibility
(Summary). Prepared for RWMWD by'Barr Engineering, Augu
. Tanners Lake CIP Performance Evaluation, Prepared for RW
August 2003.
Tanners Lake collects runoff from its immediate drainage area,
Creek Lake through an outlet structure under 1-94,
The RWMWD has implemented several capital improv,!:L nt prO], e Tanners Lake
subwatershed that has resulted in a significant redu9tib'n inp~osp~qt loading to the lake,
Tanners Lake was once on the impaired waters Iist'Ior e"G-essiv~'rfutrients, but has been
removed for that impairment. The RWMWD con~trycteq!~n alll,rD1:reatment facility upstream of
Tanners Lake. This facility treats the majority of,'~tor \!Vater rtfoff before it enters Tanners
Lake, Tanners Lake is still listed as impair 'for"m
The RWMWD lists water quality goal~" Tanner in its Water Resources Management
Plan, The City of Maplewood adopt~' ese goals, which are showrY in Table 25.
Table,25. Su
Water Quality Goals for Tanners Lake
5.25 ft
9,1 ppb
8,5 ft
10 ug,lL
Only 151 of the Tanners Lake drainage area is located in Maplewood, According to the
City's Non-Degradation Report, the Tanners Lake drainage area (located in Maplewood)
experienced very little change in impervious surface area, runoff volume, total suspended
sediment loading, and total phosphorus between 1988 and 2005, It is anticipated that the
Tanners Lake drainage area will experience an increase of 1% impervious surface area
between 2005 and 2020, Assuming the City's stormwater treatment requirements remain in
effect, it is anticipated that between 2005 and 2020 the runoff volume will increase by 0,5 acre-
City of Maplewood
Surface Water Management Plan
42
Draft #1 - June 2008
feet, the total suspended sediment loading will remain the same, and the total phosphorus load
wi!! increase by 0.4 pounds,
10. Wakefield Lake
Wakefield Lake is located entirely within the City of Maplewood, Wakefield Lake has a surface
area of 23 acres and the maximum depth is 9 feet. The lake is mostly used for aesthetic
viewing, wildlife habitat, and picnicking, There is no direct boat access to the lake.
According to the RWMWD Plan the following studies related to Wakefield Lake and
tributaries have been completed:
. Report to RWMWD on the Water Quality of Beaver and Wakefield,
County Department of Public Works, March 1985,
. Phalen Chain of Lakes Surface Water Management Plan, Prep
Engineering, November 1988,
. Phalen Outlet Hydraulic Study. Prepared for RWMWD by Barr
1990.
. Draft Phalen Chain of Lakes Strategic Lake Management Plan. Prep
by Barr Engineering, October 2004. '
. Phalen Chain of Lakes Study of Untreated Tributary.
Areas, Prepared for RWMWD by Barr Engineering
. Phalen Chain of Lakes Summary Report and FiJ"j
Recommendations, Prepared for RWMWD b E:far
Wakefield Lake collects surface water runoff fro
discharges to Lake Phalen through the City'~
m,,",,_ ""
.._____M ...n___,
___, 'W"_'
------- ----
--"'----' --'-',-"
___.W__n. ___
______,____ _w____
--- --
urrounding drainage area, and
ewer system,
,",_,,_ ..__n."_
__ .__'w._n
" _...m
_w_ __ ___.__w
n'n""," "'W"
~ -- --
Wakefield Lake is listed as impaired fO,E.'!91l;lf ph01~~q{~~'d6n the impaired waters list. The
RWMWD plans on completing a watE?(cRuality studY;cofWakefield Lake, The RWMWD has set
preliminary water quality goals for,ttJi3nake. The city of Maplewood. adopts these goals, which
are shown in Table 26,
Quality Goals for Wakefield Lake
60 ug,lL
3,3 ft
136 ppb
51,5 ppb
2,6ft
20 ug,lL
D. Creeks
The City of Maplewood has several creeks located within City boundaries, A summary of the
physical characteristics and water quality features of the main creek segments is provided in the
following sections,
City of Maplewood
Surface Water Management Plan
43
Draft #1 - June 2008
1. Battle Creek
Battle Creek is located in southern Maplewood, south of 1-94. The headwater for Battle Creek is
Battle Creek Lake, which is located in Woodbury. The Creek flows west and discharges into
Pigs Eye Lake in SI. Paul. Battle Creek is a perennial stream, Battle Creek Regional Park is
located adjacent to Battle Creek and has hiking and bicycling facilities along the Creek.
According to the RWMWD Plan the following studies related to Battle Creek and/or its tributaries
have been completed:
.
Battle Creek Watershed Management Plan. Prepared for RWMWD by Barr'
N~~~19n, .
Battle Creek Erosion Control Project Report, Prepared for RWMW
Engineering, 1983,
An Evaluation of District Water Quality Data Collected from 19
Prepared for RWMWD by Barr Engineering, 1990,
Feasibility Report: Battle Creek Tunnel Repairs, Prepared for R,\j')f
Engineering, January 1995, ::it:.:
Battle Creek Sediment Study. Prepared for RWMWD by Barr Enginee
2002,
.
.
.
.
Historically Battle Creek has experienced frequent and d"L.,The RWMWD
completed a large erosion control project in the Creek..irn'iine e~fiy: to stabilize Battle
Creek, The RWMWD installed several sheet pile dro~.structgrE!S, c.tf;j1lted a large detention
basin, and installed a large pipe that serves as a d'<:rsio!;1.:cnan9~Ffor larger events to help
reduce erosion in the Creek and the Park. This pas reqlljred periodic maintenance, and
in recent years the RWMWD has decided to pi hhhel every five years as part of a
regular maintenance plan,
Battle Creek is listed as impaired forq orides on >, paired waters list. The Shingle Creek
Chloride TMDL was completed inpecember 2006, Like Battle Creek, Shingle Creek is located
in an urban area and is used fo. water conveyance, The Shingle Creek TMDL determined
that most of the chloride was f d salt, which is used extensively in the winter for snow
and ice control on olitan
There is discussion 0 g the gle Creek Chloride TMDL for other water bodies that
are impaired for c~lgt!g ride levels are dependent on daily flow and concentration, which
can vary signifiqClntfy, e e Shingle Creek TMDL is represented as a percent reduction
across the f1g\l\i'iregimes tthe standard, The guidance principles for implementing the
TMDL mos ["have to do :"'1.1 better chloride application and education, Please refer to the
Shingle k TMDL, Ig.qated on the MPCA's website, for more information,
2. Fi
ocated in South Maplewood, Carver Lake is the headwaters for Fish Creek, and
the Cree ischarges to Eagle Lake. According to the RWMWD Plan the following studies
related to Fish Creek and/or its tributaries have been completed:
. . Fish Creek Hydrologic Study. Prepared for RWMWD by Barr Engineering, 1988,
The Fish Creek subwatershed includes significant areas of parks and open space which are
owned by Ramsey County and the City of Maplewood. Future development is expected in this
City of Maplewood
Surface Water Management Plan
44
Draft #1 - June 2008
part of Maplewood, and the proposed land use is low-density residential and possibly
commercial land use in the southeast portion,
Both the City of Maplewood and the RWMWD have identified erosion and sedimentation issues
in Fish Creek, As development increases in this subwatershed it will be important to implement
volume control measures and to stabilize the watercourse and the banks, According to the
RWMWD plan, an extreme storm event caused considerable damage to Fish Creek in 2005.
The RWMWD has been working on system improvements to provide additional prote '0 , .
. Phalen Chain of Lakes Surface Water ManagemE1nt for RWMWD by Barr
Engineering, November 1988, "'.:f:"':',,,:'
. An Evaluation of District Water Quality Data QollectE1,9,.:ffo
Prepared for RWMWD by Barr Engineerin "'990.,'':'/ ..,.'
. Technical Specifications for Casey Lake let,8.tructurE1s, Prepared for RWMWD by
Barr Engineering, 1991,
. Kohlman Basin Feasibility Study. 8r"pa WD by Barr Engineering,
September 1993,
. Target Pond Feasibility Study epared f(i~L WD by Barr Engineering, April 1993,
. Kohlman Basin Project: Preli[IJlnary Design Report, Prepared for RWMWD by Barr
Engineering, 1996. .
. Draft Phalen C in of trategic Lake Management Plan, Prepared for RWMWD
by Barr Engi g, Oct " 04.
. Draft Kohlm eller L tal Maximum Daily Load Report, Prepared for
RWMWD by eerin uly 2005,
. Internal Ph ad Stuay: Kohlman and Keller Lakes, Prepared for RWMWD by
Barr Eng" ring, r 2005,
. Phalex(':Chain of tudy of Untreated Tributary Drainage and Other Improvement
Ar~fl$:,Prepared t.:.. MWD by Barr Engineering, October 2005,
. Ptt~len Chain of.:gakes Summary Report and Final Lake Management
. ommenda "'lls. Prepared for RWMWD by Barr Engineering, October 2005.
3. Kohlman Creek
Kohlman Creek is located in north central Maplewood, The Kohlman Cree
uppermost subwatershed in the Phalen Chain of Lakes Watershed, The
much of North SI. Paul, part of Maplewood and the western edge of Oa
into Kohlman Basin and discharges into the Kohlman Lake subwaters
, stream that was previously considered County Ditch 18,
According to the RWMWD Plan the following studies related to Kohlman Cre
tributaries have been completed:
Kohl tinues to be managed as a stormwater conveyance system. Several erosion
contro ., ,. ..,.......... stabilization projects have been constructed throughout the years by
RWMWt)'"The RWMWD identifies collaboration with Maplewood on the maintenance and
improvement of Markham Pond, if found beneficial to Kohlman Lake water quality, as an action
item for this subwatershed.
City of Maplewood
Surface Water Management Plan
45
Draft #1 - June 20.0.8
4. Willow Creek
Willow Creek is located in the north central portion of Maplewood. It is located in the upper
portion of the Phalen Chain of Lakes Watershed, Willow Lake discharges into Willow Creek and
then Willow Creek merges with Kohlman Creek at Kohlman Basin, From here the creek
discharges to Kohlman Lake, Willow Creek is an intermittent stream that was previously
considered a county ditch, and continues to be managed as a stormwater conveyanc s
According to the RWMWD Plan the following studies related to Willow Creek and/or'
tributaries have been completed:
5. Snake Creek
. Phalen Chain of Lakes Surface Water Management Plan.
Engineering, November 1988,
. Kohlman Basin Feasibility Study, Prepared for RWMWD by Bar
. Draft Phalen Chain of Lakes Strategic Lake Management Plan,
by Barr Engineering, October 2004,
City of Maplewood
Surface Water Management Plan
46
Draft #1 - June 2008
Maplewood
.
M
nnesota
Surface Water Management P(a,
v. Implementation Plan
A. Overview
The I mplementation Plan is the final section of the Plan,":~nd opEi intended to provide
guidance in carrying out the Plan goals and objective~;:'Theimpie:" ion section summarizes
capital improvement projects, studies and ongoing,Q}ainten~nce,i!1spection, monitoring and
other management activities, This Plan is intend ~tb SEl,rNe the@Jty for at least the next ten
years and many of the program activities will co") ~t.:put to the year 2030, Procedures
for amending the Plan are provided, '
Development of the implementation pr guidelines in Minnesota Rules Chapter
8410, the WMOs and Metropolitanuhcil. City s identified a w.ide range of issues or
problems related to the various ections, developed solutions or approaches to addressing
each of the issues, and~develo . pecific action steps, including identification of possible
resources, measurem s, app schedules and planning level costs,
Table 27 (at the end ection su.mmarizes the activities and efforts of the overall
implementation pro table includes a mixture of capital improvement projects, studies,
ongoing mainten , monitoring and other management activities recommended
over the next JQ1br more Information in the table is not the entire body of work the City
conducts o,:yi/ilT do in the f storm water management. Rather, the table provides a
summary,:8fthe some of e key efforts needed to help achieve the goals of this Plan, Estimated
planning"l$vel costs of commended actions are provided with a cautionary note that they are
not int ~.~~' d to set alistic expectations of the actual costs of projects and/or activities. The
costs tended to serve as an order-of-magnitude look at what the activity may
requir are also provided where the activity can be completed by City staff,
B. Implementation Priorities and Cost
A critical area of focus as the City move ahead with implementation of this Plan will be the
continued close coordination with the local watershed organizations, Ramsey County, and other
project-specific partners to take full advantage of opportunities to gain water quality
improvements and enhance other natural resources at the same time, These efforts will be
City of Maplewood
Surface Water Management Plan
47
Draft #1 - June 2008
needed and a priority for the City on public capital improvement projects, storm water system
and utility maintenance activities, public outreach and education activities and on private
development projects, This cooperative approach will allow the City to leverage the limited
funding that is currently available,
Maintain a financing strategy for surface water improvements relates very closely to the
cooperative approach to projects and activities, The City will need to continue using a
combination of environmental utility fees, special assessments, connection charges,
water program grant funds to realize the goals of this Plan, The City will need to ev
need for increases in storm water utility charges that serves as the primary de' t
funding the wide range of storm water program activities and capital project
The City's water bodies and wetlands are truly exceptional resources for
water quality is one of the priority areas for future program efforts. City J
resources offer a range of recreational opportunities and some are trul
from a water quality perspective, Others are impaired for various pollutgl'l
value due to those impairments, One of the most recognized and vall.led rEi
Phalen, which is one of the four lakes in the City not impaired for excess nut.
phosphorus). One of the City's challenges in the years ahead )foIiIU(g~~g succe 1.I11y implement
this Plan to maintain the quality of lakes like Phalen, and at.ttj ., ,.., 'me work towards
improvements in the seven lakes that are impaired for eXP.f1sshosphorus),
Water Quantity, or flooding, issues are another keYilrea fortBe Ci.+. 0 ocus efforts on in the
coming years, While no major flooding-related iss~l'!s exi.~t;therei~re several areas throughout
the City where localized flooding can be addres~.~~,bYj[lffastru9ture improvements associated
with street reconstruction and/or developme[lt 8ro)ect~,"Thel;;f:3localized flooding improvements
are in areas like Valley View in south Ma Wood t. .'.. ...hil with localized flooding from
extreme rainfall events in the fall of 200 ...
Except for the activities that are tak rom the City NPDES SWPPP, the Implementation Plan
is not a hard and fast commitmenf omplete each and every activity in the time frame
suggested, Rather, it i;,>'.il sugg Qurse of action that will accomplish the major goal of this
plan; to accommodate.ri dev in-fill development and redevelopment in the
community while pr and ini...... 9 Maplewood's surface water resources. Infrastructure
replacements andlor~ will be(teviewed, approved and administered in accordance with
Maplewood's Capitment Program,
;''''''''- ---;'.',.
_ ,., ,""'m"
ater manag~ment projects and administrative activities has become more complex
ars, In a98iHon, public improvement and private development projects are seeing a
higher'.ntagE'l~f(their planning and construction budget being needed for water resources
and en)iit:8!"!!;Jf:39!al protection efforts, In the past, special assessments against benefited
properti@!>.!iI}Ulnced most of the necessary improvements, However, the financial options have
broadened considerably, The question is which method or methods best suit the needs of the
City. The major categories of funding sources are: Ad Valorem Taxes; Special Assessments;
Storm Water Utility; and Grants as summarized below,
. Ad Valorem Tax, General taxation is the most common revenue source used to finance
government services, including minor maintenance measures for drainage and water
quality facilities, Using property tax has the effect of spreading the cost over the entire
City of Maplewood
Surface Water Management Plan
48
Draft #1 - June 2008
tax base of a community, A special tax district can also be used to raise revenue, The
special tax district is similar to the administrative structure under general taxation except
that all or part of the community may be placed in the tax district. The principle is to
better correlate improvement costs to benefited or contributing properties,
. Special Assessments, Municipalities are familiar with the use of special assessments to .
finance special services from maintenance to construction of capital improvements. The
assessments are levied against properties benefiting from the special services, The
philosophy of this method is that the benefited properties pay in relation to bEl fit
received, The benefit is the increase in the market value of the propertie9.
. Trunk Storm Sewer/Development Fees, Fees charged to new develo
generates runoff can be charged to finance infrastructure needed t
development. This is a useful tool in communities that are rapidly
. Environmental Utility Fee. A utility is a service charge or fee ba
the fees charged for sanitary sewer or potable water supply. Th'
against improved parcels based on the concept of contributors
structure is based on the land use type, density, and parcel size to
runoff contributed by a given parcel. In some cases parc y be e
reduce their fee.
. Grants, State grants are available for surface watElr" d non-point source
pollution. However, it is generally not a good filJ,~,n'C1al RraC ely on grants for a
service program, This source of revenue is ngt"aepen;aabl". requires constant
speculation as to its availability, Grants are,\1~eful,"~ufsh9~ii:l only be used to
supplement a planned local revenue sour .'" Someof tbEil?<3gencies and programs that
may have available grant funds include: '
. Environmental Protection A
. Watershed Districts and
. U, S. Fish and Wildlife S
. Minnesota Departmen
. Metropolita CounCl.
. Minneso ution
The City currently h
Using a combingti pie funding sources will be continued in order to fund surface
water managElriP'ent activiti""""", thin Maplewood, The charges and fees will be reviewed and
adjusted anmUally to ensy~Wadequate funding for the activities set forth in this plan and those
required b Jaw. In order,;10 establish a baseline estimate of the overall program costs for the
next 20, 0 years of:{he Plan, individual activity and project cost estimates were developed,
The c preselJt~i:lin Table 27 do not account for the parts of the overall program
impleuaget that include costs such as staff salaries, street sweeping equipment,
water,,,,,, nitoring equipment or sampling costs, and sweeping disposal costs, The costs
also donofinclude land acquisition costs (capital or legal) which may be necessary to
implement the pond or water quality treatment BMPs identified in the Plan,
City of Maplewood
Surface Water Management Plan
49
Draft #1 - June 2008
D. Amendments to the Plan
1. Amendments Procedures
The Surface Water Management Plan is intended to extend approximately through the year
2018. In conjunction with this Plan, the NPDES SWPPP activities will be reviewed and
evaluated annually in a public meeting and the permit program itself will be updated as required
by the MPCA NPDES permit program, For this plan to remain dynamic, an avenue m t
available to implement new information, ideas, methods, standards, management pr
any other changes which may affect the intent and/or results of this Plan, Amepg
can be requested at any time by any person or persons either residing or h "'9 b
the City,
2. Request for Amendments
'Any individual can complete a written request for a Plan amendment '!!I
City staff. The request shall outline the specific items or sections of th'e'PI
amended, describe the basis and need for the amendment and expLain the
amendment towards improving the management of surface w'ltE'!~:~il\1!n the CI Following the
initial request, staff may request that additional materials be llb"'Hn order for staff to make
a fully-informed decision on the request. '
deg\Sion as to the completeness
erl"!:>Y staff to determine the validity of
itllln 30 days of receiving the request.
y of the request can be evaluated,
3. Staff Review
Following a request for Plan amendments, staff
and validity of the request. If additional informa
the request, staff will generally respond t r
Following receipt of sufficient informati ch th
there are three options which are de? ed belo
a) Reject the amendment.
potential to recj 'ce, the
result in theP 0 long
plans,
b) Accept the am,gt as a or issue, with minor issues collectively added to the plan
at a later c1'ltE'!,'il'ho;il\f:\::i: anges will generally be clarifications of plan provisions or to
incorpor!3t€i'hew I ,"'" , n available after the adoption of the 2008 Plan, Minor
chang€is'will gene e evaluated on the potential of the request to help staff better
implement and a ve the goals and policies the Plan, Minor issues will not result in
fqrliPal amendmo;iots but will be tracked and incorporated formally into the Plan at the
tiliPe any majqr:!changes are approved,
pt the '€mdment as a major issue, with major issues requiring an immediate
, In acting on an amendment request, staff should recommend to the City
" hether or not a public hearing is warranted, In general, any requests for
changes to the goals and policies or the development standards established in the Plan
will be considered major amendments,
ill reject the amendment if the request reduces, or has the
ility to achieve the goals and policies of the Plan, or will
,consistent with one or more of the watershed district's
c)
Staff will make every attempt to respond to the request within 30-60 days of receiving sufficient
information from the requestor. The timeframe will allow staff to evaluate the request internally
and gather input from the WDIWMOs and other technical resources, as needed, The response
will describe the staff recommendation and which of the three categories the request falls into,
City of Maplewood
Surface Water Management Plan
50
Draft #1 - June 2008
The response will also outline the schedule for actions, if actions are needed to complete the
requested amendment.
4. WMO Approval
All proposed major amendments must be reviewed and approved by the appropriate Watershed
Management Organizations and Water Districts prior to final adoption of the amendments, Major
amendments would include changes to the goals and policies of the Plan. Staff will review
proposed amendments with the WDIWMOs to determine if the change is a major a
and if determined to be major amendment, then will assess the ability of the re
amendment to maintain consistency with WDIWMO plans,
5. Council Consideration
and if identified
uncil meeting,
are made,
comes of,
ns relating to
Major amendments and the need for a public hearing will be determin
as a major amendment, the request will be considered at a regular or .
Staff recommendations will be considered before decisions on appropriate
The requestor will be given an opportunity to present the basis for, arid inten
the request at the public hearing and will be notified of the date . . official
the request.
6. Public Hearing and Council Action
The initiation of a public hearing will allow for publi ..
requested amendment. Council, with staff recomg[~nd<:l. ns, ,,"(1 determine when the public
hearing should occur in the process, Consisten!lwifh,Qtfler fgm-n<31 Council actions and based on
the public hearing, Council would adopt t rn'Elnd." ~),'f'deny the amendment(s) or take
other action.
7. Council Adoption
, following approval by the Watershed Management
s, is Council adoption, Prior to the adoption, an
the Plan changes and notify the appropriate
City of Maplewood
Surface Water Management Plan
51
Draft #1 - June 2008
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City of Maplewood
Surface Water Management Plan
56
Draft #1 - June 2008
Appendices
A, Glossary and Acronyms
B. Figures
C. 2006 NPDES Program SWPPP
D, 2007 Non-Degradation Report
E, Water Resources Agreements
F. BMP Maintenance Agreement Example
G, Current City Ordinances
City of Maplewood
Surface Water Management PI;an..
1
Draft #1 - June 2008
APPENDIX A
ACRONYMS
AST
BMP
BWSR
DNR
EQB
EQC
FEMA
FIRM
GIS
'GPS
IMP
LID
LUST
McRAM
MnDOT
MnRAM
MPCA
MS4
MSWMP
MUSA
NOI
NPDES
NURP
RWMWD
SWCD
SWMP
SWPPP
TP
TSS
USEPA
UST
VBWD
WD
WMO
ACRONYMS, WEBPAGE LINKS AND GLOSSARY
Above-ground Storage Tank
Best Management Practices
Minnesota Board of Water and Soil Resources
Department of Natural Resources
Minnesota Environmental Quality Board
Environmental Quality Committee
Federal Emergency Management Agency
Flood Insurance Rate Map
Geographic Information System
Geographic Positioning System
Integrated Management Practice
Low Impact Development
Leaking Underground Storage Tank
Minnehaha Creek Routine Assessment Method
Minnesota Department of Transportation
Minnesota Routine Assessment Method
Minnesota Pollution Control Agency
Municipal Separate Storm Sewer System
Metropolitan Surface Water Management Program
Metropolitan Urban Services Area
Notice ofIntent (for coverage under the NPDES Permit Program)
National Pollutant Discharge Elimination System
Nationwide Urban Runoff Program
Ramsey-Washington-Metro Watershed District
Soil and Water Conservation District
Surface Water Management Plan
Storm Water Pollution Prevention Program
Total Phosphorus
Total Suspended Solids
United States Environmental Protection Agency
Underground Storage Tank
Valley Branch Watershed District
Watershed District
Watershed Management Organization
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WEBP AGE LINKS
Water Management Agency/Organization Contacts
Numerous agencies and organizations in Minnesota have varying authorities and/or interest in
surface water management activities relative to the City's Plan, A summary of these agencies
and organizations is listed below with a link to their respective website at the time this Plan was
created, More detailed information is available on each web page including contacts and key
responsibilities relative to surface water management.
Agency/Organization
Website Link
State
MN Pollution Control Agency
'MN Department of Natural Resources
Board of Water and Soil Resources
http://www.pca.state.mn.us
http://www.dnr.state.mn.us
http://www.bwsr.state.mn.us
Local
City of Maplewood
Ramsey County
http://www.ci.maplewood.mn.us
http://www.co.ramsev.mn.us
Watersheds
Capital Region WD
Ramsey-Washington-Metro WD
Valley Branch WD
http://www,capitoJregionwd,org
http://www,rwmwd,org
http://www,vbwd,org
Federal
US Army Corps of Engineers
Natural Resources Conservation Service
Federal Emergency Management Agency
http://www.usace.armv.mil
http://www .nrcs,usda,gov
http://www.fema,gov
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GLOSSARY
IOO-Year Flood or IOO-Year Storm Event: The flood having a one-percent (1%) chance of
being equaled or exceeded in any given year. A 1 DO-year flood is synonymous with Base Flood,
Regional or 1 % Chance Flood.
Agricultural Land: Any land designated specifically for agricultural production. This may
include row crops, pasture, hay land, orchards, or land used for horticultural purposes
Anaerobic: Conditions either in water or soil where there is a lack of oxygen,
Army Corps of Engineers (COE or USCOE): The United States Army Corps of Engineers is a
regulatory agency involved in design, permitting and construction projects related to or
impacting navigable waters of the United States including lakes, waterways and wetlands,
Aquatic Bench: A 10- to IS-foot bench around the inside perimeter of a permanent pool that is
approximately one-foot deep, Normally vegetated with emergent plants, the bench augments
pollutant removal, provides habitat, conceals trash and water level drops, and enhances safety,
Best Management Practice (BMP): A combination of land use, conservation practices, and
management techniques, which when applied to a unit of land will result in the opportunity for a
reasonable economic return with an acceptable Jevel of water quality or water quantity
improvements,
Bluff: A natural topographic feature such as a hill, cliff, or embankment generally having the
following characteristics: (J) The slope rises at least 25 feet above the toe of the bluff; and (2)
The grade of the slope from the toe of the bluff to a point 25 feet or, more above the toe of the
bluff averages 30 percent or greater; and (3) An area with an average slope of less than 18
percent over a distance for 50 feet or more shall not be considered part of the bluff.
Buffer: The use ofland, topography, difference in elevation, space, fences, or vegetation to
screen or partially screen a use or property from the vision of another use or property, and thus
reduce undesirable influences such as: sight, noise, dust, and other external effects, Also defined
as area immediately adjacent to a wetland that is unmowed and/or unmanaged, Buffers are
ideally dominated by native vegetation and add to the ecological health of the wetland by adding
habitat and assisting and filtering pollutants from surface water runoff.
Buffer Strip: An area of vegetated ground cover abutting a water body that is intended to
sediment or other pollutants from runoff,
BWSR: Board of Water and Soil Resources, This is the lead regulatory agency that oversees the
Wetland Conservation Act in the State of Minnesota,
Circular 39: Wetland classification system developed by United States Fish and Wildlife
Service in 1956 that categorizes wetlands into eight types, This is the same classification system
generally accepted by the State of Minnesota for wetland classification,
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Comprehensive Plan: As defined in Minnesota Statutes 394.21, the policies, statements, goals
and interrelated plans for private and public land and water use, transportation and community
facilities that guide future development (and growth),
Cowardin Classification: Wetland classification system developed by the United States Fish
and Wildlife Service in 1979, This system defines wetlands by a tiered system and is more
detailed that the Circular 39 method, The Cowardin System is the classification System used in
the National Wetlands Inventory,
Design Storm: A rainfall event of specified size and return frequency that is used to calculate
the runoff volume and peak discharge rate to a BMP,
Detention: The temporary storage of runoff from rainfall and snowmelt events to control peak
, discharge rates and provide an opportunity for physical, chemical and biological treatment to
occur.
Development: The construction, installation or alteration of any structure, the extraction,
clearing or other alteration of terrestrial or aquatic vegetation, land or the course, current or cross
section of any water body or water course or division of land into two (2) or more parcels, See
also re-development, new development and existing development.
Drawdown: The gradual reduction in water level in a pond BMP due to the combined effect of
infiltration and evaporation,
Draining: The removal of surface water or ground water from land,
Drop Structure: Placement oflogs with a weir notch across a stream channel. Water flowing
through the weir creates a plunge pool downstream of the structure and creates fish habitat.
Easement: A grant of one or more property rights by a property owner for use by the public, a
corporation, or another person or entity,
Ecoregiou: Areas of relative homogeneity characterized by distinctive regional ecological
factors, including land use, soils, topography and potential natural vegetation, There are seven
such Ecoregions in the state of Minnesota:
. NLF = Northern Lakes and Forests
. CHF = North Central Hardwood Forests
. NGP = Northern Glaciated Plains
. WCP = Western Com Belt Plains
. RRV = Red River Valley
. DA = Driftless Area
. NMW = Northern Minnesota Wetlands
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Exotic Species or Invasive Species: Non-native plants or wild animals that can naturalize, have
high propagation potential, are highly competitive for limiting factors, and cause displacement
of, or otherwise threaten, native plants or native animals in their natural communities,
End of Pipe Control: Water quality control technologies suited for the control of existing urban
storm water at the point of storm sewer discharge to a receiving water. Due to typical space
constraints, these technologies are usually designed to provide water quality control rather than
quantity control.
Erosion: The wearing away of land surface and soil by the action of natural elements (wind
and/or water),
Eutrophication: Process by which overabundance of nutrients in a waterbody lead to
accelerated productivity and general decrease in water clarity and quality,
Exfiltration: The downward movement of runoff through the bottom of an infiltration BMP into
the subsoil.
Existing Development: A property or parcel of land that has previously been subject to
development, and that is not undeveloped property,
Extended Detention: A storm water design feature that provides for the gradual release of a
volume of water (typically 0,25 to 1.0 inches per impervious acre) over a 12 to 48 hour time
period, With proper design, the extended detention period allows for an increased settling of
pollutants, and can protect channels from frequent flooding or scour,
Extended Detention (ED) Ponds: A conventional ED pond temporarily detains a portion of
storm water runoff for a period of 12 to 48 hours after a storm using a fixed orifice, Such
extended detention allows urban pollutants to settle out. ED ponds can be designed to be "dry"
between storm events and thus do not have any permanent standing water or "wet" with a
permanent pool of water. An enhanced ED pond is designed to prevent clogging and
resuspension and provides greater flexibility in achieving target detention times, It may be
equipped with plunge pools near the inlet, a micropool at the outlet, and utilize an adjustable
reverse-sloped pipe at the ED control device, See also "wet pond" definition for diagram.
Extended Detention Wetland: A storm water wetland design alternative in which the total
treatment volume is equally split between a shallow marsh and temporary detention of runoff
above the marsh, After a storm, the normal pool of the shallow marsh may rise by up to two feet.
The extra runoff is stored for up to 24 hours to allow pollutants to settle at, before being released
downstream,
Finished Floor Elevation: The lowest elevation of the first floor or basement in a residential
building or other structure that will or may be inhabited by a person or persons.
Filtration Basin: A treatment area designed to treat storm water by a process that physically
removes particles from the water.
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Flood: A temporary rise in stream flow or stage that results in inundation ofthe areas adjacent to
the channel or water body.
Flood Frequency: The average frequency, statistically determined, for which it is expected that
a specific flood stage or discharge may be equaled or exceeded.
Flood Fringe: That portion ofthe IOO-year floodplain outside of the floodway.
Flood Obstruction: Any dam, well, wharf, embankment, levee, dike, pile, abutment, projection,
excavation, channel rectification, culvert, building, wire, fence, stockpile, refuse, fill, structure or
matter in, along, across or projecting into any channel, watercourse or regulatory flood hazard
area which may impede, retard or change the direction of the flow of water, either in itself or by
catching or collecting debris carried by such water, or that is placed where the flow of water,
o either in itself or by catching or collecting debris carried by such water, or that is placed where
the flow of water might carry the same downstream to the damage of life or property,
Floodplain: Floodplains are lowland areas adjoining lakes, wetlands, and rivers that are
susceptible to inundation of water during a flood, For regulatory purposes, the floodplain is the
area covered by the IOO-year flood and it is usually divided into districts called the floodway and
flood fringe, Areas where floodway and flood fringe have not been determined are called
approximate study areas or general floodplain,
Floodplain (General) Area: The general floodplain area is determined using the best available
data, in lieu of performing a detailed engineering study. These data may be from soils mapping,
experienced high water profiles, aerial photographs of previous floods, or other appropriate
sources, There are no associated published I OO-year flood elevatiol].s with general floodplain
delineations, unlike detailed study areas, General floodplain area is synonymous with
approximate study area and unnumbered A-Zone.
Floodplain Forest: Wooded area adjacent to stream or river that is periodically flooded. Within
this plan, floodplain forests have been specifically identified as a separate wetland category due
to their unique ecology and protection needs.
Flood Proofing: A combination of structural provisions, changes or adjustments to properties
and structures subject to flooding primarily for the reduction or elimination of flood damages to
properties, water and sanitary facilities, structures and contents of buildings in a flood hazard
area in accordance with the Minnesota State Building Code,
Floodway: The floodway is the channel of a river or other watercourse and the adjacent land
areas which must remain open in order to discharge the IOO-year flood,
Forebay: An extra storage area provided near an inlet of a pond or BMP to trap incoming
sediments, reducing the amount that accumulates in a pond or BMP,
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Freeboard: A factor of safety usually expressed in feet above a certain flood level. Freeboard
compensates for the many unknown factors (e,g" waves, ice, debris, etc.) that may increase flood
levels beyond the calculated level.
Forbs: Vegetation that is not a tree, grass or shrub, Usually associated with flowering plants
Geographic Information System (GIS): Computer database of georeferenced information on
the cities various resources,
Global Positioning System (GPS): Network of satellites used to map and identify locations on
the earth, For this plan, the GPS unit used was a Trimble GeoXT, which is accurate to within
three feet.
Hydric Soil: Soils that are saturated, flooded, or ponded long enough during the growing season
to develop anaerobic conditions in the upper part.
Hydrophytic Vegetation: Macrophytic plant life growing in water, soil, or a substrate that is at
least periodically deficient in oxygen as a result of excessive water content.
Hypereutropic: A very nutrient-rich lake characterized by frequent and severe nuisance algal
blooms and low transparency.
Impervious Surface: The portion of the buildable parcel which has a covering which does not
permit water to percolate into the natural soil. Impervious surface shall include, but not be
limited to, buildings, all driveways and parking areas (whether paved or not), sidewalks, patios,
swimming pools, tennis and basketball courts, covered decks, porches, and other structures.
Open, uncovered decks are not considered impervious for the purPQses of this ordinance, The use
of patio blocks, paver bricks or class 5 gravel material are considered impervious surfaces as a
majority of water runs-off the surface rather than being absorbed into natural soils underneath,
Some exceptions to these conditions may include paver blocks or pavement systems engineered
to be permeable with the underlying soils suitable for infiltration,
Infiltration Basin: An impoundment where incoming storm water runoff is stored until it
gradually infiltrates into and through the soil of the basin floor,
Infiltration Trench: A conventional infiltration trench is a shallow, excavated trench that has
been backfilled with stone to create an underground reservoir. Storm water runoff diverted into
the trench gradually exfiltrates from the bottom of the trench into the subsoil and eventually into
the water table, An enhanced infiltration trench has an extensive pretreatment system to remove
sediment and oil. It requires an on-site geotechnical investigation to determine appropriate
design and location,
Infrastructure: Public facilities and services, including transportation, storm water pipes,
structures and ponds, water and sewer pipes and structures, telecommunications, recycling and
solid waste disposal, parks and other public spaces, schools, police and fire protection, and health
and welfare services.
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Integrated Management Practice (IMP): A range of small-scale storm water controls or
practices distributed throughout a site and intended to maintain flow patterns, filter pollutants
and/or re-create or maintain existing site hydrology,
Invasive Species or Exotic Species: Non-native plants or wild animals that can naturalize, have
high propagation potential, are highly competitive for limiting factors, and cause displacement
of, or otherwise threaten, native plants or native animals in their natural communities,
Local Government Unit (LGU): Agency that has the primary responsibility of administering
the Wetland Conservation Act.
Lowest Floor: The lowest floor of a structure, including basement.
o Low Impact Development (LID): An approach to storm water management intended to protect
water resources, reduce storm sewer infrastructure costs and provide a more attractive storm
water management system, LID practices include infiltration systems, bioretention areas, rain
barrels, green roofs, porous pavements and a long list of additional innovative storm water
treatment practices,
Mesotrophic: Describes a lake of moderate photosynthetic productivity,
MNRAM: The Minnesota Routine Assessment Methodology as referenced by Minnesota Rules
8420, MNRAM is the primary tool used to assess wetland functions and values on a qualitative
basis, The MNRAM evaluates wetlands based on vegetation, wildlife habitat, water quality,
flood and storm water attenuation, recreational opportunities, aesthetics, fishery habitat,
groundwater interactions, and commercial use. The version referenged in this plan is Version 3,0,
Monotypic: Used to describe vegetation communities in which only one species is present.
Most often used to describe areas that are entirely dominated by reed canary grass or cattails,
Navigable Waters. Waters defined by the United States, 33 Code of Federal Regulations
Section 329.4 as those waters that are subject to the ebb and flow of the tide and/or are presently
used, or have been used in the past, or may be susceptible for use to transport interstate or'
foreign commerce,
New Development: Development of a property or portion thereofthat is currently undeveloped
property ,
NURP: Nationwide Urban Runoff Program, a study by the U,S, Environmental Protection
Agency, A key component ofthis program was to assess the effectiveness of urban runoff
detention/retention basins (e,g., ponds) in removing pollutants from storm water runoff.
Off-Line BMP: A water quality facility designed to treat a portion of storm water (usually 0,5 to
1,0 inches per impervious acre) which has been diverted from a stream or storm drain.
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Off-Line Treatment: A BMP system that is located outside of the stream channel or drainage
path, A flow diverter is used to divert runoff from the channel and into the BMP for subsequent
treatment.
Ordinary High Water Level (OHWL or OHW): The boundary of public waters and wetlands,
and shall be an elevation delineating the highest water level which has been maintained for a
sufficient period oftime to leave evidence upon the landscape, commonly that point where the
natural vegetation changes from predominantly aquatic to predominantly terrestrial. For
watercourses, the ordinary high water level is the elevation of the top of the bank of the channel.
For reservoirs and flowage, the ordinary high water level is the operating elevation of the normal
summer pool. For streams and waterways, the OHW is considered the top of bank. Areas below
the OHW are under the jurisdiction of the Minnesota Department of Natural Resources and are
not regulated by the Wetland Conservation Act.
'Permanent Pool: A 3- to lO-foot deep pool in a storm water pond system that provides removal
of urban pollutants through settling and biological uptake. (Also referred to as a wet pond),
Porous Pavement: An alternative to conventional pavement whereby runoff is diverted through
a porous asphalt layer and into an underground stone reservoir, The stored runoff then gradually
infiltrates into the subsoil.
Protected Water: Any water or wetland designated by the Minnesota Department of Natural
Resources and identified by statute on the Protected Waters Inventory,
Public Waters: Those waters ofthe state identified as public waters or wetlands under
Minnesota Statutes, Section l03G,005,
Reach: A hydraulic engineering term to describe a longitudinal segment of a stream or river
influenced by the natural or man-made obstruction, In an urban area, the segment of a stream or
river between two (2) consecutive bridge crossings would most typically constitute a reach,
Redevelopment: Any development including but not limited to rebuilding, renovation, revision,
remodel, reconstruction or redesign of or at an existing development.
Regional Flood: A flood which is representative of large floods known to have occurred
generally in Minnesota and reasonably characteristics of what can be expected to occur on an
average frequency in the magnitude of the lOO-year recurrence interval. Regional flood is
synonymous with the term "base flood" used in the Flood Insurance Study,
Regulatory Flood Protection Elevatiou: A point not less than one-foot (I ') above the water
surface profile associated with the IOO-year flood as determined by the use of the IOO-year flood
profile and surrounding technical data in the Flood Insurance Study plus any increase in flood
heights attributable to encroachments on the floodplain. It is the elevation to which uses
regulated by City ordinance are required to be elevated or flood proofed,
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Retention: The permanent storage of runoff from rainfall and snowmelt events with volume
reduction coming from infiltration, evaporation or emergency release,
Riprap: A combination oflarge stone, cobbles and boulders used to line channels, stabilize
banks, reduce runoff velocities, or filter out sediment,
Runoff (Storm Water): The overland and near surface flow from storm water and snowmelt.
Runoff Conveyance: Methods for safely conveying runoff to a BMP to minimize disruption of
the stream network, and promote infiltration or filtering of the runoff,
Runoff Pretreatment: Techniques to capture or trap coarse sediments before they enter a BMP
to preserve storage volumes or prevent clogging within the BMP. Examples include forebays and
micropools for pond BMPs, and plunge pools, grass filter strips and filter fabric for infiltration
'BMPs,
Sand Filter: A relatively new technique for treating storm water, whereby the first flush of
runoff is diverted into a self-contained bed of sand, The runoff is then strained through the sand,
collected in underground pipes and returned back to the stream or channel.
Sediment Forebay: Storm water design feature that employs the use of a small settling basin to
settle out incoming sediments before they are delivered to a storm water BMP, Particularly use
full in tandem with infiltration devices, wet ponds or marshes, See also Forebay.
Sequencing: The process used by the Local Government Unit to evaluate the necessity of an
activity impacting a wetland, The party proposing the impact must demonstrate that the activity
proposed complies with the following principles in descending order of priority.
I, Avoids direct or indirect impacts to the wetlands that may diminish or destroy them;
2, Minimizes the impact to the wetland by limiting the degree or magnitude of the
wetland activity and its implementation;
3, Rectifies the impacts by repairing, rehabilitating, or restoring the affected wetland;
4, Reduces or eliminates the impact to the wetland over time by preservation and
maintenance operations; and,
5, Replaces unavoidable wetland impacts to the wetland by restoring or, if wetland
restoration opportunities are not reasonably available, creating substitute wetland
areas having equal or greater public value as provided for under the Wetland
Conservation Act.
Shoreland: Land located within the following distances from public waters: one thousand feet
(1,000') from the ordinary high water level of a lake, pond, or flowage; and three hundred feet
(300') from a river or stream, or the landward extent of a floodplain designated by ordinance on a
river or stream, whichever is greater. The limits of shore land may be reduced whenever the
waters involved are bounded by topographic divides which extend landward from the waters for
lesser distances and when approved by the Commissioner ofthe DNR,
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Short Circuiting: The passage of runoff through a BMP in less than the theoretical or design
treatment time, For example, a properly designed treatment pond will have the inlet and outlet
pipes located as far apart (along the water flow path) as possible, A short circuiting pond would
have the inlet very close to the outlet such that the water corning into the pond would leave the
pond much sooner than if it were able to travel through the entire pond,
Storm Water Treatment: Detention, retention, filtering or infiltration of a given volume of
storm water to remove pollutants,
Stream Buffer: A variable width strip of vegetated land adjacent to a stream that is preserved
from a disurbance to protect water quality and aquatic and terrestrial habitats, See also buffer
strip,
Structure: Anything manufactured, built, constructed, erected, or a portion thereof which is
, normally attached to or positioned on land, whether temporary or permanent in character,
including but not limited to buildings, fences, sheds, advertising signs, dog kennels, hard surface
parking areas, boardwalks, playground equipment, concrete slabs,
Shoreland Wetland Protection Zone: The land located within 1,000 feet from the Ordinary
High Water Elevation of a Protected Water, 500 feet from the Minnesota River or the landward
extent of the designated floodplain, and 300 feet from any stream designated in the shoreline
management ordinance.
Storm Water: (See Runoff)
Storm Water Treatment Pond: Any waterbody that has been specifically created to remove
sediment and nutrients and "treat" surface water runoff, Storm water ponds that were created
from existing wetland are still regulated as jurisdictional wetlands. Storm water ponds created
from upland areas are not wetland and are exempt from regulatory jurisdiction,
Subwatershed: A subdivision based on hydrology corresponding to a smaller drainage area
within a larger watershed.
Technical Evaluation Panel (TEP): A panel of technical professionals from the Board of
Water and Soil resources, Carver or Hennepin County Conservation Districts, and a Minnesota
Department of Natural Resources representative, Additional members can also be invited,
including the U,S, Army Corps of Engineers, The TEP provides decision making support for the
LGU for many wetland and regulatory issues,
Ten-Day Snow Melt Runoff with Type "C" Distribution (lOO-Year/lO-day runoff): A
modeled runoff event that represents snowmelt conditions over a 1 O-day period for a return
period snow depth of 100 years. The runoff event is simulated for a curve number (CN) of 100
which represents frozen soil conditions or where all surfaces are considered impervious, For
some drainage basins the ten-day runoff event is the critical event for identifying the high water
level of the basin or water body, The Type C distribution is similar in concept to the Type I and
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II distributions, and for this event, establishes the time distribution of runoff volume over the ten-
day period,
Treatment Volume (Vt): The volume of storm water runoff that is treated within a BMP or IMP
storm water treatment facility. Typically the volume is expressed in terms of inches of runoff per
impervious acre,
Type I, lA, II and III Storm Distributious - NRCS: These storm types represent the time
distribution of a 24-hour rainfall event for areas throughout the United States, The total storm
depth is distributed according to the diagram in subpart A, Type II storms are more "flashy" (i.e"
convective/thunderstorms) than a Type I or IA storm, Subpart B illustrates that all of Minnesota
is within the Type II rainfall distribution area,
A, SCS 24-hour rainfall distributions (SCS, 1986):
1.0
"'
~
.~
~
Q
.eo
~. 0_5
'0
c
i
u..
O~O
(}
3
9 12 1$
Time, hrn.JfS
24
1$
21
6
B. Approximate geographic boundaries for SCS rainfall distributions (SCS, 1986):
~h,.l
mW1
~TYI'.l^
Dh,.l1
~TH.1l1
L:::7-~
13
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City of Maplewood
Surface Water Management Plan
Underdrain: Typically perforated plastic pipes installed on the bottom of a filtration of
infiltration BMP, or sand filter. The under drain is used to collect and remove treated storm water
that exceeds the water holding and/or infiltration capacity of the soil.
Upland: General term to describe any area that is not a wetland,
Vegetated Filter Strip: A vegetated section of land designed to accept runoff as overland sheet
flow from upstream development. It may adopt any natural vegetated form, from grassy meadow
to small forest. The dense vegetative cover facilitates pollutant removal. A filter strip cannot treat
high veloCity flows; therefore, they have generally been recommended for use in agriculture and
low-density development. A filter strip can also be an enhanced natural buffer, whereby the
removal capability of the natural buffer is improved through engineering and maintenance
activities such as land grading or the installation of a level spreader. A filter strip differs from a
grassed swale in that a swale is a concave vegetated conveyance system, whereas a filter strip
has a fairly level surface,
Watershed: A topographically defined area within which all runoff water drains to a point.
Watershed-to-Lake Ratio: The relative surface area of the contributing watershed to the surface
area of the lake or water body. In terms of water quality, generally the smaller the watershed-to-
lake ratio, the better the quality of the lake, For example a Jake with a ratio of2 to I means that
the watershed is twice the size ofthe surface water itself (Le" 1 00 acres contributing to a 50 acre
lake).
Wetland: Transitional land between terrestrial and aquatic systems where the water table is at or
near the surface or the land is covered by shallow water. For purposes of the plan, wetlands must
have a predominance of hydric soil, be inundated or saturated to the surface or groundwater at a
frequency and duration sufficient to support a prevalence of hydrophytic vegetation typically
adapted for life in saturated soils; and under normal circumstances supports a prevalence of
hydrophytic vegetation,
Wetland Conservation Act (WCA): In 1991 Minnesota adopted the initial Wetland
Conservation Act (Minnesota Laws Chapter 354) to protect the states wetland resources, This
act has been amended and updated periodically, but is used by reference to the current program,
and any future amendments,
Wetland Delineation: The process and procedure by which an area is adjudged a wetland or
non-wetland including a determination ofthe wetland boundary based on the point where the
non-wetland areas shift to wetlands or aquatic habitats,
Wetland Mitigation: Wetlands created to replace wetland areas destroyed or impacted by land
disturbances,
Wet Pond: A conventional wet pond has a permanent pool of water for treating incoming storm
water runoff and a live storage component for flood storage and additional water quality
treatment detention (see typical cross section in Appendix D),
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APPENDIX B
FIGURES
City of Maplewood
Surface Water Management Plan
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APPENDIX
The City's stonnwater conveyance system inherently collects and conveys urban runoff and stonnwater
that may contain certain pollutants to surface water resources, Like other City infrastructure, the system
requires a combination of routine maintenance and occasionally major repairs in order to function
properly, Conducting inspections and maintenance of the system is also a requirement of the City's
NPDES permit program, The intent of this memorandum is to outline recommended inspection and
maintenance protocols the City should follow in order to comply with the obligations ofthe NPDES
program as a first priority, In doing so, the City will realize reductions in the pollutants entering water
resources, reduce the occurrences of localized flooding from blocked or degraded system components and
reduce the overalllong-tenn costs associated with its stonn water management infrastructure,
, Protocols for maintenance are described in a number of online sources as well as in similar guidance
documents from regulatory agencies, These guidance documents are intended to reduce the volume and
resulting impacts of pollutants reaching receiving waters through proper conveyance system operation
and maintenance, Properly maintaining infrastructure such as catch basins, sump manholes, inlets,
skimmer structures, treatment systems (ponds, rain gardens, etc,) and other stonnwater system
infrastructure on a regular basis will remove pollutants, reduce pollutant concentrations during the first
flush, prevent clogging of the conveyance system, restore sediment trapping capacity, and reduce
blockages in the system so that it functions properly hydraulically and reduces the occurrences of
localized flooding,
The primary BMPs in the City's NPDES SWPPP that relate to inspections and maintenance ofthe stonn
sewer system are listed below, Recommendations for each category are provided in the following pages
to supplement the City's regulatory requirements,
BMPID BMP Title
6a-1 Municipal Operations and Maintenance Program
6a-2 Street Sweeping
6b-2 Annual Inspection of All Structural Pollution Control Devices
6b-3 Annual Inspection of 20% of Outfalls, Sediment Basins and Ponds
6b-4 AlillUal Inspection of All Exposed Stockpiles, Storage and Material
Handling Areas
6b-5 Inspection Follow-up (Repair, Replacement, Maintenance)
6b-6 Record Reporting and Retention: Inspections and Maintenance
Program
6b-7 Evaluation of Inspection Frequency
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Draft #1 - June 2008
Suggested Considerations and Protocols - by BMP
The City will provide training for Public Works, Parks & Recreation and Development Review Staff on a
range of topics related to the NPDES permit program, Several potential topics and specific
recommendations are provided below as a guide to developing a more formal training program, One
example of a simple training topic that can help improve water quality to train City landscape crews on
the need to limit the deposits of grass clipping into the streets, unless they are cleaned/removed after
mowing so they don't end up in the storm drains.
In addition, some local twin cities municipalities have initiated efforts to better coordinate municipal
training programs such as the Public Works Forum in the east metro area which includes City Engineers,
Public Works Directors and Watershed Organization staff addressing topics such as those listed below,
Again, the items listed below are potential topics to present at training and are intended as a guide to help
City staff at all positions recognize the activities that may have impacts to the City's storm water system,
1, Train crews in proper maintenance activities, including record keeping and material handling and
disposal.
2, Train staff involved in detection and removal of illicit connections in the following:
a, OSHA-required Health and Safety Training plus annual refresher training (as needed),
b, OSHA Confined Space Entry training for staff entering manholes or other confined
spaces,
3, Procedural training for field staff looking for illicit discharges or tracking origination of
discharges (field screening, sampling, smoke/dye testing, TV inspection),
4, Clean up of spills and leaks using "dry" methods (with absorbent materials and/or rags), or dig
up, remove, and properly dispose of contaminated soil.
5, Look for evidence of illegal discharges or illicit connections during routine maintenance of
conveyance system and drainage structures:
a, Is there evidence of spills such as paints, discoloring, etc?
b, Are there any odors associated with the drainage system?
c, Record locations of apparent illegal discharges/illicit connections,
d, Track flows back to potential dischargers and conduct aboveground inspections, This can
be done through visual inspection of upgradient manholes or alternate techniques
including zinc chloride smoke testing, fluorometric dye testing, physical inspections, or
TV camera inspection,
e, Eliminate the discharge once the origin of flow is established,
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6, Conduct illegal dumping training for inspecting and cleaning up hot spots and other storm
drainage areas regularly where illegal dumping and disposal occurs, Train staff that may be in the
field on non-storm water program activities to recognize, look for and report potential problems
in the context of what may impact water quality or potential plugging of the drainage system,
7, Establish a process to investigate all reports of spills, leaks, and/or illegal dumping promptly and
for tracking incident response, The system should be designed to identifY the following:
a, Types and quantities (in some cases) of wastes
b, Patterns in time of occurrence (time of day/night, montb, or year)
c, Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles,
direct dumping of materials, accidents/spills)
d. Responsible parties
8, Clean-up activities may create a slight disturbance for local aquatic species, Access to items and
material on private property may be limited. Trade-offs may exist between channel bydraulics
and water quality/riparian habitat. If storm channels or basins are recognized as wetlands, many
activities, including maintenance, may be subject to regulation and permitting,
9, Storm drain flushing is most effective in small diameter pipes (36-inch diameter pipe or less,
depending on water supply and sediment collection capacity), Other considerations associated
with storm drain flushing may include the availability of a water source, fmding a downstream
area to collect sediments, liquid/sediment disposal, and prohibition against disposal of flushed
effluent to sanitary sewer in some areas.
] 0, Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants,
Storm drain inlets should have messages such as "Dump No Waste Drains to Stream" stenciled
next to them to warn against ignorant or intentional dumping of pollutants into the storm drainage
system,
] I. Post "No Dumping" signs in problem areas with a phone number for reporting dumping and
disposal. Signs should also indicate fmes and penalties for illegal'dumping,
The City currently sweeps at least once per year and has goals to sweep at least twice per year starting in
2007, The City also intends to develop a schedule and tracking system for sweeping activities, Figure J-2,
provided in this Appendix J for the inspection program, can also be used to help prioritize sweeping
activities, The approach may be to complete the first and/or second sweeping based on a prioritized basis
of which watershed areas have the highest priority waters, Traffic and safety issues are also involved,
although the priority system would help identifY which areas should see a more focused sweeping effort,
As the sweeping program progresses, the City could end up with a map that shows different levels of
priority based roughly on a structure that considers factors including:
I. The highest priority watersheds,
2, The extent and frequency of sanding activities.
3, Areas which discharge directly to water bodies versus areas that are routed through storm water
ponds,
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Draft #1 - June 2008
The City will inspect all structural pollution control devices annually as part of the NPDES pennit
program requirements, Structures may include sump manholes, grit chambers, skimmers, mechanical
separators, small filtering devices, trash racks, etc, The following subsections provide some
recommended frequencies and maintenance actions for each type ofBMP, See the general inspection
procedures at the end of this Appendix for a summary of the key things to looks for and observe during
inspections ofthese structures,
Sump Manholes/Grit Chambers/Separators
], ]nspect facilities at least annually in accordance with BMP 6b-2, to determine need for removal of
sediment or other maintenance, Sump manhole locations are identified in Figure J-2,
2, Cleaning should be conducted before a sump exceeds approximately the 40-60% full level. Sump
manholes should be cleaned as frequently as needed to meet this standard, The level of the
sediment/debris in the sump area should be tracked for each inspection, even if the material is not
removed, This process will help identifY the need for extending or shortening the time between
inspections and to identifY the preferred timing of sediment/debris removal,
3, The notebook process (or electronic method in the future) mentioned in 6b- 3 should be followed
for all small pollution control devices,
4, As new structures are added, the development review staff would be responsible for adding the
new structures to the GIS database so that they are inspected later in the current year and/or part
of the annual inspections in the following year.
Catch Basins/inlet Structures
I, Inspect facilities routinely during regular street maintenance activities to determine if there are
sigus of any deterioration threatening structural integrity that are in need of immediate repair, and
if stenciling of catch basins and inlets with "drains to stream" or '!drains to lake" are still visible
or in need of re-stenciling
The City will inspect 20% ofthe ponds and outfalls annually as part of the NPDES permit program
requirements, The following subsections provide some recommended approaches and considerations for
this inspection program, City staff will identifY if the ponds and outfalls are functioning properly and
conduct necessary maintenance, repair or replacement, This memorandum includes an attached example
inspection checklist (which is similar to what the City currently uses) but that also clearly identifies the
key elements required for reporting and follow-up maintenance actions in the NPDES permit program,
The following subsections provide some considerations and suggestions for outfalls and ponds
specifically, See the general inspection procedures at the end of this Appendix for a summary of the key
things to looks for and observe during inspections of these structures,
Outfalls and Ponds/Sediment Basins
I, Inspect facilities on an annual basis according to the groupings identified in Figure J- I. Five areas
are identified in Figure J-] that have borders based on major roads or distinct sections of the City,
The intent of the priority system listed in Figure J- I is to establish a guide for annual inspection
planning based on the priority of the water body or water bodies within the border, The map
represents a balance between administrative ease and watershed-based planning,
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2, While the areas do not separate the ontfalls and ponds into exact 20% sections of the City, the
long-term (5-year) goal is to reach each ontfall and pond at least once in the five-year period, As
time permits, the intent wonld be to get ahead of the program by inspecting priority areas 1 and 2,
for example, in the first year.
3, Outfalls and ponds should be inspected directly (and not by a drive-by process) to observe that
the system does not have restrictions, scour at the outlet, or discolored liquid discharging into the
pond or discharging to the downstream surface water,
4, Until the City is upgraded at some point in the future to using handheld electronic web-based
devices for infrastructure inspections, the use of a 3-ring notebook with the areas in Figure I-I
separated into parts will be sufficient to plan and track the outfall and pond inspections,
5, The notebook should have a print-out of each outfall (or group of outfalls) identified on a letter
sized page that identifies the unique ill of each outlet and the major road or roads in the area, In
the same manner, each pond could have a printout with its unique 10 and showing the pipes or
conveyances into and out of the pond,
6, Inspection staff would then use their current inspection form or the example in this appendix in
the field (prior to establishing a hand held device process), then enter the data into the GIS or
other tracking system database for each outfall in the office after completing the field work. The
end result would be that staff could have the ability to click on an outfall or pond from their
desktop and see what and when inspections and maintenance had been conducted on each system
component.
7, For areas needing a follow-up inspection or maintenance, the City's lead for inspections would
review the items on a weekly or monthly basis and be responsible for scheduling follow-up
activities, Any major maintenance needs and activities should also include notification to the
Public Works and Natural Resources departments,
8. As new ponds or outfalls are added, the development review staff would be responsible for
adding the new features to the GIS database so that they are inspected later in the current year
and/or part of the annual inspections in the following year,
City staff will conduct inspections of the system as identified in the previous BMP sections for water
quality purposes, but also are required to identifY if the system is functioning properly and conduct
necessary maintenance, repair or replacement. This memorandum includes an attached example
inspection checklist (which is similar to what the City currently uses) but that also clearly identifies the
key elements required for reporting and follow-up maintenance actions in the NPOES permit program,
The assignment of responsible staff for follow-up activities is the critical item in this BMP section, The
tracking and reporting form current used (or the example fonn) will help gather a reasonable amount of
data to be tracked to support the ongoing program evaluation, and adjustment in the inspection program
over time.
The following subsections provide some considerations and suggestions for the more routine storm
system maintenance that crews will be responsible for and that are not specifically mentioned in BMPs
6b-3 and 6b-5,
Catch Basins/Inlet Structures
], Clean catch basins, storm drain inlets, and other conveyance structures in the late winter/early
spring to remove sediments and debris accumulated and again in late fall to remove leaves and
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Draft #1 - June 2008
debris, Note areas which have regular maintenance needs due to heavy vegetation or debris
blocking a structure,
2. Keep accurate logs of the number of catch basins cleaned to better track trends in which
structures have most frequent maintenance needs,
Storm Drain Conveyance System (Pipes, FES, Culverts, etc)
], Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps
the pipe clear of excessive buildup,
2, Where the sediment buildup is adjacent to a sediment basin or storm water pond, flush the
material into the pond and remove it during the next scheduled pond cleanout activity for that
pond, If excessive sediment buildup has occurred at that pipe outlet, then remove the
accumulated sediment as soon as possible following flushing operations,
3, Where the sediment buildup is in a pipe segment that discharges to a wetland, lake or stream,
collect the material with a vactor truck and dispose of off-site, Note the location of the
accumulated sediment on the storm system checklist and request an evaluation of the need for a
sump manhole at that location by Engineering Department staff.
4, Inspect FES pipe inlets and outlets for signs of sediment and debris accumulation that reduce the
capacity of the system and for signs of deterioration or damage. On all FES inlets and outlets,
inspect for the presence of erosion or scour around the pipe section and immediately adjacent to
the FES, If the outlet is routed to a dry channel downstream, observe the downstream reach for
signs of erosion and scour.
Open Channels
], Observe channel sections for occurrences of scour or bank erosion and deposits of sediment or
large debris which may reduce the conveyance capacity of the channel.
2, Consider modifications to stonn channel characteristics to improye stability, channel hydraulics,
increase pollutant removals, and enhance channel/creek aesthetic and habitat value,
Pump Stations
], Clean all storm drain pump stations at least twice per year to remove silt and trash,
2. Do not allow discharge to reach the storm drain system when cleaning a stonn drain pump station
or other facility,
3, Conduct routine maintenance at each pump station including testing pump operation at least
annually,
4, Inspect, clean, and repair as necessary,
The use of a paper and/or electronic storm system inspection record process is the fITst step in tracking
and reporting on annual inspections described in previous BMPs, Getting the data tracked in an
electronic format will further automate the process of preparing a summary of the activities and results of
the program, As a fITst step the City may be best suited to track the data in an Excel or Access database
and consider a more comprehensive work-order management system like City-Works in the future, The
City should consider how the current data would be uploaded to a more comprehensive system when
City of Maplewood
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Draft #1 - June 2008
making this decision. In this light Access would allow for both more efficient tracking and likely easier
transfer of the data.
Based on the data collection aud a review of trends in material removed from structures or ponds and the
frequency of maintenance of system, the City may choose to adjust the inspection frequency (either
increase or decrease), For example, if a selected sump manhole is inspected annually and determined to
be 80% full each inspection in the first two years, the City should consider increasing the frequency to
twice per year to better manage the accumulation of sediment in the structure. The more frequent
inspection may also help to identify what are the best times to maintain structures in various locations
(e,g" spring, summer, fall, winter),
In selected areas the City may also consider the effects of more frequent sweeping in areas with ponds
and small sediment control devices, Timely or more frequent sweeping may allow the City to clean sump
manholes out less frequently, As a big picture view, the overall goal is to reduce the loading of sediment
and pollutant to the City's water resources, Inherent in this goal is the need for the City to manage its
resources in a cost-effective manner. A more functional database of the inspections and maintenance
program will allow the City to make better decisions on the cost-effectiveness of the various storm system
maintenance program,
Attachments:
3. Storm System Inspection record (Example)
City of Maplewood
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Draft #1 - June 2008
Storm System Inspection Record
Pond/Water Body Name
Date Inspected
Inspector Name
Dept.:
(circle one)
STREET
UTIL.
PARKS
Current Weather:
Weather Trends: NORMAL WET DRY
(circle one)
Unique ID
Structure Type: 100% Inspected Annuallv (small pollution control devices)
Sump MHICB
Separator
Skimmer
Stockpile
Environmental Manhole
Rain Garden
Bioretention Area
Infiltration Basin
Other
Structure Type: 20% Inspected Annuallv
Outfall (into lake/river/stream)
Sediment Basin
Pond
INSPECTION RESULTS:
[circle reason(s) below and add description]
OK
NEEDS FURTHER REVIEW
Pipe Issues
Structure Issues Sediment Deposition
Possible Illicit Discharge
Trash Guard
Obstruction Sediment Delta
Other
Description:
FOLLOW-UP
Follow-up Maintenance Required: MINOR MAJOR Description:
Follow-up Maintenance Completed:
Date(s) Completed:
Activity Description
Material removed (sediment, organics, etc,; estimated volume)
Submit completed forms to
Entered into database by (initials)
Date:
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Storm System Inspection Record
Best Management Practice - General Inspection Procednres
For Ponds, Sump Manholes, Bioretention Areas, etc,
The list below is intended as a summary of the key steps and considerations from the suggestions
provided in the detail inspection fonns in the MPCA Storm Water Manual (MPCA Manual- Appendix D,
Pages 9-12),
1. Ponds:
a, Inspect the entire embankment including the emergency spillway for signs of erosion and or loss
of vegetative cover, anilnal burrows, larger vegetation (tree) growth near the inlets and outlets
that may cause plugging,
b, Inspect the inlet and outlet pipes for accumulation of debris and/or sediment and remove any
debris that can be easily and safely removed with equipment on hand at the time of the inspection,
c, Inspect inlet and outlet structures for signs of material damage or deterioration, For example, for
concrete, inspect for presence of exposed rebar, spalling of concrete and excessive cracking,
d. Inspect inlet and outlet structures lock/bolts and other safety devices for proper condition and
function.
e, Observe the permanent pool for any signs of visual pollution (e,g" discolored water, oil floating
on the surface, etc,)
f. Observe the condition of rip-rap or other inlet/outlet protection measures for signs of failure,
g. If a sediment delta is apparent from visual observations at one or more of the inlets, note these on
the inspection form and identifY the need for a follow-up inspection, The frequency of sediment
accumulation to this stage will generally be 5-10 years of more, but may be more frequent in
areas where substantial construction or erosion has taken place,
i. The follow-up inspection should be conducted with waders or small boat to access the
sediment delta area(s), A survey rod could be used to measure the approximate water depth
in the sediment accumulation area, '
ii. Follow-up sediment removal should occur when the sediment accumulation is estimated to
have taken no more than about 20% ofthe total pond storage volume below the normal
water level.
2, Sump Manholes and Environmental Manholes:
a, Inspect structure for signs of plugging from debris or accumulated sediment.
b. Place survey rod on top of sediment accumulation within the structure and detennine the depth of
accumulated sediment. If the depth of accumulated sediment and debris is 40-60% of the sump
depth, note on the inspection form that sediment should be removed as soon as possible,
3, Bioretention and Infiltration Systems:
a, Follow the same general steps as for ponds and clean sumps that are 40-60% full, if present
upstream of the system,
b, Remove debris and litter from planted and/or mulched areas,
c, Observe if ponded water is present. If present and it has more than 48 hours since the last rainfall,
inspect for plugging of the overflow outlet and for indications that the soil or mulch layer has
plugged with fine sediments,
City of Maplewood
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Draft #1 - June 2008
SUSTAINABILITY
CHAPTER
MEMORANDUM
TO:
FROM:
SUBJECT:
DATE:
Planning Commission
Shann Finwall, AICP, Environmental Planner
2008 Comprehensive Plan - Sustain ability Chapter
July 8, 2008 for the July 15 Planning Commission Meeting
INTRODUCTION
The Community Design Review Board (CDRB) and Environmental and Natural Resources
(ENR) Commission have reviewed and recommended approval of a comprehensive plan
chapter relating to sustainability, The sustainability chapter will promote balanced and
sustainable practices in the community in order to accommodate the needs of the present
"without compromising the ability of future generations to meet their needs. :This chapter is
not a requirement of the Metropolitan Council, but the CDRB and ENR Commission find that
it would be an important addition and guide as we move toward a more green community.
BACKGROUND
May 13 and 27, 2008, the CDRB reviewed the draft sustainability chapter and recommended
approval of the document.
June 3 and 24, 2008, the ENR Commission reviewed the draft sustainability chapter and
recommended approval of the document.
July 7, 2008, the City Council reviewed the draft sustainability chapter during a City Council
work shop,
DISCUSSION
Board/Commission Responsibilities
The CDRB ordinance states that board may recommend special design-related criteria for
developments. Since 2002 the CDRB has expressed an interest in gaining a better
understanding of sustainable building design concepts and drafting policies or ordinances to
help guide sustainability, The ENR ordinance states that the commission will develop and
promote the use of sustainable practices for city policies and procedures,
Comprehensive Plan Requirements
The Metropolitan Council's 2030 Regional Development Framework sets out four goals to
guide the region1s development: efficient growth, multi-modal transportation, housing
choices, and natural resource protection. In addition, state statute requires that
comprehensive plans address four areas: background - the community's vision and
expectations; land use - how a community allocates land use; public facilities - including
transportation, water resources and parks and open space; and implementation - official
controls that will ensure viability of the plan. The comprehensive planning process is an
excellent opportunity for the city to promote sustainability through the community's vision
1
and expectations and implementation policies. As such, staff is recommending a section
in the comprehensive plan dedicated to sustainable issues,
What is sustainability?
Sustainability means meeting the needs of the present without compromising the ability of
future generations to meet their needs, The city strives to be sustainable in all aspects of its
operations and regulatory including the built environment, energy efficiency, water
conservation, etc, The sustainability section should specify how the city will promote those
practices.
The CDRB and ENR Commission reviewed several cities' sustainability efforts in their review
of the draft sustainability chapter. In particular they looked at Sl. Paul's efforts, Sl. Paul is a
national leader in sustainable urban living, To view Sl. Paul's sustainability efforts visit their _
website at http://www,stpaul.qov,
Elements of the Plan
The 2008 comprehensive plan will include several sections including background, land use,
housing, sanitary sewer, surface water, transportation, and parks/trails/open space, In
addition to these sections, the ENR is currently reviewing a proposed natural resource
section. This section will seNe as a guide for how to treat natural resources in a sustainable
way by implementing strategies to protect, connect, restore and manage ecosystems,
communities, and species, The sustainability section, therefore, should deal with sustainable
practices in the built environment such as energy efficiency, sustainable building designs,
etc,
RECOMMENDATION
Review and make a recommendation on the draft sustainability chapter (Attachment 1) to be
included in the Maplewood Comprehensive Plan,
P:lcom-devlcomp planlsustainabilityI7-15-08 ENR
Attachment:
1, Sustainability Chapter
2
Draft Sustainability Chapter
July 8, 2008
Maplewood's quality of life depends on the preservation and enhancement of its environment. As
such, the city recognizes the sensitive interface between the natural and built environments. The
sustainability chapter of the comprehensive plan will promote balanced and sustainable practices
in the community in order to accommodate the needs of the present without compromising the
ability of future generations to meet their needs,
Sustainabitity is an overriding theme that is thread throughout Maplewood's comprehensive plan,
The plan promotes sustainability and environmental stewardship in a variety of ways such as
promoting the efficient use of land through low-impact development, storm water best management
practices, and the protection of natural resources, These policies will ensure that the residents,
businesses, and property owners live and function in a way that considers the livelihood of future
generations and of other living beings on this planet.
In addition to the sustainable policies and guidelines found in other chapters of the plan, the
sustainability chapter will develop attitudes and ongoing actions that will strengthen the city's
natural and built environment in other ways including energy efficiency, pollution reduction, and
sustainable city operations. This chapter focuses on sustainable policies and guidelines directed
toward the city's human activities and built environment.
Vision
The city strives to improve upon the natural and built environment by using best practices for
sustainability. The city believes that property values and the city's overall marketability will rise
over time by improving upon these environments, Following its tradition as an environmental
leader, the City of Maplewood holds the following vision for sustainability:
The City of Maplewood, in order to ensure stewardship of its environment, will promote
sustainable development and practices for the preservation, design, and maintenance of
its natural and built environments. Developments and practices should maintain or
enhance economic opportunity and community well-being while protecting and restoring
the natural environment that people, economies, and ecological systems depend on,
Goals
The sustainability chapter is a tool for action and is intended to change long-standing practices
through the creation of goals and implementation strategies, To realize the sustainability vision,
the city will promote these goals:
1, Protect and enhance air quality and reduce greenhouse gas emissions,
2, Make energy efficiency and conservation a priority through building code improvements
and city operations,
Sustain ability
Page 1
3, Promote sustainable building practices such as green building standards.
4, Encourage sustainable and aesthetic design and maintenance practices for multi-family
residential and commercial developments,
5, Adopt an urban tree program that encourages a healthy and thriving urban tree canopy
and other desirable forms of vegetation,
6. Provide transportation options by promoting a transportation system that is safe, efficient,
minimizes disruption, promotes better land development, improves the aesthetic
appearance of the city, reduces air pollution, and provides pedestrian connections,
7. Follow low impact and environmentally sensitive city maintenance and operation practices,
8. Address noise, air, and water pollution by taking measures to reduce these pollutants at
point and non-point sources,
9, Focus on reducing, reusing and recycling solid waste prior to disposal.
10. Provide educational opportunities to promote sustainable practices,
11. Promote local production and consumption of foods and products.
12, Encourage and promote healthy lifestyles for residents.
Implementation Strategies
The city's present and future residents, businesses, and property owners will benefit from
Maplewood's sustainable practices and guiding principles. The plan for sustainability has the
following strategies:
Education/Partnerships
. Give annual sustalnability progress reports to the city council and the community.
. Prepare a sustainable newsletter and brochures for residents and businesses.
. Create a sustainability page on the city's website,
. Continue and expand environmental and sustainable programs which outreach to the youth,
adults, and businesses In the city.
. Coordinate with Metro Transit to facilitate bus transportation and promote alternative mass
transit options,
. Provide educational material on sustainable building and operational practices.
. Work with other government units, owners, and developers to identify and Implement ways to
buffer, reduce, or eliminate noise, air, and water pollution originating from businesses,
industries, railroads, and highways,
. Have a city employee become certified in Leadership in Energy and Environmental Design
(LEED) standards.
Sustainability
Page 2
. Encourage efficient city trash hauling efforts to reduce multiple trips and gas emissions,
. Encourage composting.
. Create opportunities for community gardens.
City Policies, Ordinances, and Proqrams
Modify the city's policies, ordinances, or programs to implement feasible sustainability strategies
that:
. Encourage developments to utilize renewable energy sources including solar, wind,
geothermal, hydro, and biomass.
. Encourage low impact development and conservation design practices to include:
o Green building modeled after the United States Green Building Council's
Leadership in Energy and Environmental Design (LEED) or Minnesota Green Star
programs.
o Low impact landscaping which promotes native plantings and do not require
irrigation,
o . Green space requirements.
. Encourage and offer incentives to developments which can obtain at least ten points toward
LEED standards.
. Continue to strive for and improve on building design standards and ordinances that will
include provisions about building massing, architectural design, off-street parking ratios and
location, access, traffic impacts, landscaping, fencing or screening, and trash handling.
. Encourage the planting of trees and protect the city's urban tree canopy by:
o Requiring a no net loss policy for the city's urban tree canopy by maintaining and
preserving existing trees and planting new trees on public and private property,
o Requiring new subdivisions to plant trees.
o Maintaining Tree City U,SA standards.
. Use existing development review process to actively promote alternative modes of
transportation such as public transit, bicycles, car and bike share programs, carpools, and
promote alternative work schedules.
. Enforce and strengthen ordinances which require buffering of developments from the impacts
of noise pollution.
City Operations
The city is in a unique position to implement and influence approaches to achieving a balance
between the environment, the economy, and our community. The city can demonstrate and
showcase applications of new sustainable technologies in the following ways:
Sustainability
Page 3
. Take an inventory of current city operation efforts that make progress toward sustainability and
be frank about areas that need improvement.
. Work to increase awareness of sustainability among its staff and management.
. Create a green team made up of city employees to make suggestions and heip implement
sustainable practices within all areas of city operations.
. Encourage partnerships with other organizations to make public buildings, operations, and
maintenance sustainable.
. Establish goais for reduction of greenhouse gasses within all aspects of the city's operations
including such things as a "no idle" policy, increasing the fuel efficiency of city fleet vehicles,
and the conversion of vehicles that operate with environmentally sustainable alternative fuels.
. Require that all new city buildings or city-funded buildings obtain at least ten points toward the
LEED standards,
. Recycle at all parks, city buildings, and city events,
. Increase recycling efforts at multi-tenant buildings and schools,
. Encourage employees to commute to work by alternative modes of transportation than single-
car commuting.
. Become paperless in city operations where feasible,
. Measure the carbon footprint of city operations and take measures to reduce carbon emissions
where feasible.
.
City Budqet
Modify the city's operating procedures and annual budgets to implement the sustainability
strategies found to be feasible, .
P:\com-dev\compplan\s~stainaibility\su5tainabmty chapter
Sustainability
Page 4
HISTORICAL
RESOURCES
CHAPTER
Chapter 9 - Historical Resources
Introduction
Maplewood was incorporated in 1957, Before that, it was the Township of New Canada, which was founded 99
years earlier in 1858 when the Minnesota Territory became a state, Historical Resources are defined as properties
and structures of historical significance and importance as well as archeological sites and elements of cultural and
traditional importance, These resources contribute to the City by providing information about its past. They provide
evidence of the way Maplewood was settled and people's contributions made to our society. They also provide
insight into the values that formed Maplewood,
Preserving historic sites and resources benefits the City, both economically and socially, Historic preservation goes
beyond the primary concern of understanding the significance of historic and cultural resources, It also focuses on
integrating historic preservation into the broader planning and decision-making arena, so it can be relevant to social
and economic concerns,
The Maplewood Comprehensive Plan will, among other things:
. Guide future growth and development in an orderly manner.
. Define the proper functional relationships between different types of land uses,
. Help to coordinate public and private sector decisions,
. Establish a framework to guide and involve citizen participation in City government.
. Provide for a sense of community and neighborhood identity,
These goals can be supported by an effective Historical Resources Plan, The plan can also be supported by citizens
and decision-makers who use the guidance of this chapter to preserve historic, cultural, and archeological resources
in Maplewood,
Purpose
This Historical Resources Plan supports and interrelates with all elements, goals, and objectives of the
comprehensive plan, The purpose of the Historical Resources Plan is to:
. Guide the City in a comprehensive program of historic preservation and historic resource management.
. Describe the existing historic resources and historic preservation activities in Maplewood,
. Evaluate the historic preservation and historic resources needs of Maplewood's residents, as may be
determined by the Historical Preservation Commission, and to set standards for measuring the meeting
of those needs,
. Promote the use and conservation of historic properties in Maplewood for the education, inspiration,
pleasure, and enrichment of area citizens,
. Plan for adequate support and understanding of the historic resources in Maplewood,
. Designate the goals, objectives and actions that Maplewood will use to help preserve the historic
resources in the city,
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Discussion, Challenges and Issues
Maplewood began to be settled by European descents more than 100 years ago, The City is interested in identifying
its historic resources. The Historic Preservation Commission will be challenged in this task because of:
. The aging of our citizens who have knowledge of historic places.
. The limits in public funding to support historic preservation programs,
. The development or redevelopment of sites that might have historic resources,
. The current lack of a program which encourages historical interest and private owner acceptance of
properties that have historic resources,
There are opportunities available, however. Maplewood could build on these opportunities to develop a program to
Qelp preserve the City's heritage, These opportunities include:
. Completing an inventory of historic resources in Maplewood and setting priorities of importance,
. Working with knowledgeable preservation-oriented organizations, Working with county, state, and
federal agencies that have knowledge of historic resources and programs.
The Metropolitan Council's "Local Planning Handbook" has several suggested guidelines for an historic preservation
plan. These include standards for establishing a Heritage Preservation Commission and practices to follow, The
Handbook also recommends following the Secretary of Interior's Standards and Guidelines for Archeology and
Historic Preservation which include standards for preservation planning and guidelines and activities for a
preservation-planning program,
Standards for Preservation PlanninCl
o Historic Contexts
1, Decisions about historic properties are most reliably made when the relationship of
individual properties to other similar properties is understood, Information about historic
properties which represent aspects of history, architecture, archeology, engineering, and
culture must be collected and organized to define these relationships, This organizational
framework is called a "historic context." The historic context organizes information
based on a cultural theme and its geographical and chronological limits. Contexts
describe the significant broad patterns of development in an area that may be represented
by historic properties, The development of historic contexts is the foundation for decisions
about identification, evaluation, registration, and treatment of historic properties.
2, Develop goals, objectives, and priorities for the identification, registration, and treatment
of historic properties, This task should be pursued by the City, the Historical Preservation
Commission, and the Maplewood Area Historical Society after the City Council adopts this
plan,
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Guidelines and Activities for a Preservation Planning Program
o These guidelines are to include a development of Historic Contexts, A comprehensive summary of
Maplewood's history can be created by developing a set of historic contexts that will include all
significant historic and cultural properties and sites in the City. Maplewood should coordinate any
efforts with the State Historic Preservation Office since it generally has the most complete
information and is usually in the best position to advise and assist the City In matters of historical
importance,
o Once the City and the Historical Preservation Commission or the Maplewood Area Historical
Society has finished the inventory of Heritage Resources, they should be organized into historic
contexts. This organization should be based on a cultural theme, geography and chronology,
o The designation of Maplewood Heritage Landmarks should be given to those historically or
culturally significant objects, structure, buildings, sites and districts in the City, To be designated a
heritage landmark; a property must meet specific criteria for determining historical significance,
Besides local registration, certain properties may qualify for nomination to the National Register of
Historic Places, Properties on the National Register are recognized for their historical significance,
The creation of a register for significant historical properties is a critical step in planning historic
preservation, Conflicts between Maplewood's requirements and standards for historic preservation
and those of the state or federal government shall be decided by the City Council.
o Maplewood is eligible to apply to the State Historical Preservation Office to be a Certified Local
Government (CLG). After joining, Maplewood would be able to participate in the CLG preservation
partnership that the National Historic Preservation Act established, Federal funding is available
through a grants-in-aid-program to finance activities such as the local inventory of historic
resources, historic preservation planning and education,
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Historic Preservation Goals
1. Support the protection of the City's heritage by preserving, protecting, conserving, and wisely using the
significant historical, cultural, architectural, or archeological objects, structures, buildings, sites,
resources and districts in the City,
2, Encourage community identity and civic pride by preserving and protecting historic properties,
structures, sites and resources in Maplewood,
3, Develop a historic preservation program and will integrate the program with other planning programs in
the City,
4. Establish a comprehensive framework for all decisions and actions related to historic preservation,
5. Encourage broad citizen participation in historic preservation, in order to obtain the knowledge, insights,
and support of City residents,
Historic Preservation Objectives
1. The Historical Preservation Commission will advise, assist and make recommendations to the City Council,
about historic preservation and resource matters,
2, Maplewood will implement the historic preservation goals and objectives by linking and integrating with other
City programs and activities, This includes, but is not limited to, planning, zoning, code enforcement,
housing, economic development and public works as appropriate,
3. Maplewood will work with county, state and federal agencies and other organizations, including the State
Historic Preservation Office of the Minnesota Historical Society,
4, Maplewood will work with the Historical Preservation Commission to identity, document, and evaluate the
historical significance of objects, structures, buildings, sites and resources,
5, Maplewood will protect, preserve, and enhance significant heritage resources in the City by designating
them as Maplewood Heritage Landmarks, The City will also nominate appropriate sites to the National
Register of Historic Places,
6, Maplewood will have the Historical Preservation Commission, with assistance from City Staff, prepare and
maintain the Maplewood Heritage Resources Inventory.
7, In cooperation with City Staff and the Maplewood Planning Commission, the Historical Preservation
Commission may comment on all development proposals that would affect properties on the historic
properties list.
8, Maplewood may issue permits or approve development plans that include conditions for historic
preservation, based upon the recommendations of the Historical Preservation Commission,
9, Maplewood supports research, community awareness and public education on the value and importance of
preservation, protection, and the use of heritage resources in the City,
10. Maplewood encourages the establishment of an accessible location where historic documents and artifacts
can be stored and protected.
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11, Maplewood supports the use of all financial sources and opportunities to support further historic
preservation efforts,
12, Maplewood supports the incorporation of local history into present development by using historic names for
streets, parks and geographical features,
Historic Preservation Action Plan
The following is a list of activities that the City should follow in the coming years to carry out the goals and objectives
of the Historic Resources Plan, The City will periodically review and update this list.
1. Adopt and impiement a historic resources management plan, (To be done by the City,)
2, Advise, assist, and make recommendations about historic preservation and resources issues, (To be done
by the Historical Preservation Commission)
3, Identify, document, evaluate and maintain an inventory of historically significant objects, structures,
buildings, sites, resources and districts in Maplewood, (To be done by the Historical Preservation
Commission,)
4, Complete a preservation planning report before the City Council designates a property as a Maplewood
Heritage Landmark. (To be done by the Historical Preservation Commission,)
5, Issue a finding of significance for individual objects, structures, buildings, sites, resources and districts to
determine whether they are eligible for designation as Mapiewood Heritage Landmarks, (To be done by the
Historical Preservation Commission,)
6, Designate significant historic or cultural properties or resources as Maplewood Heritage Landmarks and
nominate appropriate properties or resources for iisting on the National Register of Historic Places, (To be
done by the City and the Historical Preservation Commission,)
7, Place properties designated as Maplewood Heritage Landmarks on the official Maplewood Zoning Map, or
on another map specifically created for this purpose. (To be done by City Staff,)
8. Use and follow the Secretary of Interior's standards and guidelines:
a, When advising the owners of historic properties about maintenance and restoration work, (To be
done by the City and the Historicai Preservation Commission,)
b, For design review decisions about Heritage Landmarks and Historically Significant Structures and
for archeology and historic preservation, (To be done by the City,)
9, Review City ordinances and amend them as needed to reflect the goals and objectives for historic
preservation, (To be done by the Historical Preservation Commission,)
10, Establish a program for the placement of local historical markers and plaques that identifies and informs the
public about historic sites, (To be done by the City and the Historical Preservation Commission,)
11, Provide information and education about historic preservation and properties, sites or resources that are
historically or culturally significant to property owners and the general public, (To be done by the City and
the Historical Preservation Commission,)
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12, Participate in education and communication programs to increase the visibility and understanding of the
City's historic resources, (To be done by the Historical Preservation Commission,)
13, Advise schools and teachers in the deveiopment of curricula and teaching aids about history and historic
preservation in Maplewood, (To be done by the Historical Preservation Commission,)
14, Incorporate local history into present development by using historic names for streets, parks and
geographical features, (To be done by the City,)
15, Comment on all development proposals that would affect properties of the historic properties list. (To be
done by the Historical Preservation Commission, in cooperation with City Staff and the Maplewood Planning
Commission,)
16, Review all applications or permits for the demolition, moving, or remodeling of Heritage Landmarks or
Historically Significant Structures in Maplewood to determine the possible impacts on significant heritage
resources. (To be done by the Historical Preservation Commission,)
17, Work with and encourage property owners to help preserve the heritage resource value and historical
integrity of significant historical or cultural resources, (To be done by the City and the Historical Preservation
Commission.)
18, Encourage property owners to meet historic preservation standards and guidelines when working on historic
properties, (To be done by the City,)
19, Work with the Historical Preservation Commission to apply to the State Historical Preservation Office for
certification as a Certified Local Government (CLG). (To be done by the City,)
20, Seek outside funding sources and participate where feasible on historic preservation projects, (To be done
by the City and the Historical Preservation Commission,)
21. Work with County, the State Historic Preservation Office of the Minnesota Historical Society and Federal
agencies when implementing this plan, (To be done by the City,)
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