1a. Extension of Preliminary Plat Approval, Shamrock Ridge Addition1
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CITY OF l�,
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690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
(612) 937 -1900 • FAX (612) 937 -5739 Action by City kminktf'8o
Don Ashworth, City Manager
Bob Generous, Planner II
July 31, 1995
Endorsed ✓ DIVA
Modified
Rejected _
UP 8 - 3 5'S
We Submitted to Commission
Date Submitted to CouWA
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One Year Extension for the Preliminary Plat for the Ryan Property - Shamrock
Ridge Preliminary Plat Approval, SUB #94 -7
BACKGROUND
On November 28, 1994, the City Council approved the preliminary plat (94 -7 SUB) for
Shamrock Ridge to subdivide 37.92 acres into 45 single- family lots, 2 outlots and 7 acres of
right -of -way based on the plans dated 11/28/94. On November 14, 1994, the City Council
approved a motion to bring the preliminary plat back for reconsideration in order to reevaluate
the topographical and grading issues. Previously, on October 24, 1994, the City Council
approved the first reading of rezoning (94 -3 REZ) of 37.92 acres of property from Rural
Residential, RR, to Single Family Residential, RSF, preliminary plat (94 -7 SUB) approval to
subdivide 37.92 acres into 47 single - family lots, 2 outlot and 7 acres of right -of -way, and a
wetland alteration permit (94 -3 WAP) to fill and dredge wetlands located on site subject to
the plans dated 9/28/94.
City Code, section 18 -41, states: "If the final plat application is not filed within this period
[one year after the date of the city council approval], the preliminary plat will be considered
void unless for good cause shown an extension is requested in writing by the subdivider and
granted by the city Council."
The applicant has not been able to proceed with the final plat. The applicant, not being a
developer per se, has not made a decision regarding a development partner. Due to the
environmental sensitivity of the parcel, the choice of the development partner is very
important. Staff believes that it would be in the best interest of the city to afford the Ryans
additional time to make this choice. Staff is recommending a one year extension of the
preliminary plat as permitted by city ordinance.
The preliminary plat was approved subject to the plans dated November 28, 1994 subject to
the following conditions:
MEMORANDUM
Don Ashworth, City Manager
July 31, 1995
Shamrock Ridge, #94 -7
Page 2
Preliminary Plat
1. Revise the lot lines for Lots 1 through 4, Block 1, to provide a minimum of 90 feet of
frontage for Lots 1 and 4.
2. Submit revised utility plans for approval of fire hydrant locations. Fire hydrant
spacing is 300 feet maximum. Contact Chanhassen Fire Marshal for details.
3. A ten foot clear space must be maintained around fire hydrants, i.e. street lamps, trees,
shrubs, bushes, NSP, NW Bell, Cable TV, transformer boxes. This is to ensure that
fire hydrants can be quickly located and safely operated. Pursuant to Chanhassen City
Ordinance Sec. 9 -1.
4. A turn - around acceptable to the city's Fire Marshal shall be provided at the end of the
private road off of Jennifer Way.
5. The common portion of the private roads shall be signed "No Parking Fire Lane."
6. Either a monument sign or street sign shall be provided for the private roads to aid in
the location of homes on private roads for emergency vehicles.
7. Submit turning radius and cul -de -sac dimensions to City Engineer and Fire Marshal for
approval. Pursuant to 1991 Chanhassen Fire Code Sec. 10.204(d) and 10.203.
8. Full park and trail fees shall be collected per city ordinance.
9. An 8 foot bituminous trail shall be constructed parallel to Lake Lucy Road. The
construction will be incorporated into the Lake Lucy Road extension project. The
developer shall be reimbursed for the full cost of said trail from the city's trail fund if
the developer constructs said trail as part of their project.
10. Obtain demolition permits for any buildings to be removed before their removal.
11. A landscape buffer shall be required along the length of County Road 117, Galpin
Boulevard, and along both sides of the Lake Lucy Road extension, section 18 -61 (a)
(5). This buffer landscaping shall be developed as part of the preliminary and final
plat submittal for city approval. Appropriate financial guarantees acceptable to the
city shall be required. A woodland management plan must also be prepared as part of
the platting process. A landscape plan including the landscape buffer, forestation and
replacement planting must be prepared and approved by the city. The landscape plan
and woodland management plan must be prepared by a landscape professional.
u
' Don Ashworth, City Manager
July 31, 1995
' Shamrock Ridge, #94 -7
Page 3
I 12. Prepare baseline canopy coverage calculations and estimated canopy coverage removal
area. Overlay the tree plan on the grading plan in order to verify tree preservation.
13. Boulevard trees along Lake Lucy Road, Jennifer Way, James Court, and Anne Alcove
must be diverse with no more than two trees of the same species in a row. Mary Bay
may be planting with one species considering the trees may provide a theme for the
short cul -de -sac.
14. Non - deciduous evergreens shall be incorporated into the tamaracks on the north side of
' Lake Lucy Road and the west side of County Road 117. A minimum of nine non -
deciduous evergreens shall be used to create diversity, provide additional screening,
and add interest. The evergreens planted on the south side of Lot 1, Block 2, shall be
' extended east to the rear lot line.
15. The landscaping plan requires an additional 42 trees based on staffs analysis of the
' tree preservation, forestation, and replacement requirements for a total of 284 trees.
Staff recommends that the additional 42 trees be incorporated in the landscaping plan
' as follows:
a. Nine trees staggered for a windbreak along the western property lines of Lots 1
' and 2, Block 1. Windbreak trees shall include spruce (Black Hills, Norway,
White).
' b. Five trees grouped near the corners of Lots 4, 5, and 6, Block 1; 10 trees
grouped along the rear lot lines of Lots 8, 9, 10, 11, and 12, Block l; and 18
trees in groupings along the rear lot lines of Lots 2 through 11, Block 3. Rear
' yard tree selection shall be River Birch, Ohio Buckeye, Catalpa, Silver Queen
Maple, White or Bur Oak, Hawthorne, Aspen, Arborvitae, and Balsam or White
Fir.
' 16. The following tree conservation and forestation areas shall be dedicated as part of the
final plat: a 30 foot easement along the northern boundary of the site; a 30 foot
' easement along the western lot lines of Lots 1 and 2, Block 1; the southern 100 feet of
the eastern 30 feet of Lot 4, Block 1; the southern 30 feet of the western 30 feet of
Lot 5, Block 1; the northern 70 feet of the western 30 feet of Lot 6, Block 1; the
' eastern 30 feet of Lots 8 and 9, Block 1; the western 30 feet of Lots 10, 11, and 12,
Block 1; the eastern 30 feet of Lots 2 through 7, Block 3; and the western 30 feet of
Lots 8 through 11, Block 3.
7
Don Ashworth, City Manager
July 31, 1995
Shamrock Ridge, #94 -7
Page 4
17. To provide slope stabilization north of Lake Lucy Road on Outlot B, Sumac shall be
planted 7 feet on center. Such plantings shall be staggered to provide better
stabilization and aesthetic appeal. Additionally, this areas must be seeded.
18. The applicant shall provide detailed storm sewer calculations for 10 -year and 100 -year
storm events and provide ponding calculations for stormwater quality /quantity ponds in
accordance with the City's Surface Water Management Plan for the City Engineer to
review and approve. The applicant shall provide detailed pre - developed and post -
developed stormwater calculations for 100 -year storm events. Normal water level and
high water level calculations in existing basins and individual storm sewer calculations
between each catch basin segment will also be required to determine if sufficient catch
basins are being utilized. In addition, water quality ponding design calculations shall
be based on Walker's Pondnet model.
19. The proposed development will be responsible for a water quantity user fee of $63,360
assuming 32 acres of developable land. Water quantity and quality fees may or may
not be assessed dependent upon the Lake Lucy Road improvement project assessment
methodology. These fees will be negotiated based on the developers contribution to
the City's SWMP for the site. SWMP fees for water quantity and quality are pending
formal approval of the SWMP by City Council. If there are any modifications to the
fees, they will be changed prior to final plat.
20. The applicant shall report to the City Engineer the location of all drain tiles found
during construction. Drain tile shall be relocated or abandoned as directed by the City
Engineer.
21. The existing outbuildings and any septic system or wells on the site shall be
abandoned in accordance with City and /or State codes. The existing house on Lot 14,
Block 3 shall be connected to the new sanitary sewer line within 30 days after the line
becomes available. The well may be utilized as long as the well is on the lot and
functional. Once the well fails or the property is sold the property owner shall
connect to city water.
22. Drainage and utility easements shall be dedicated for all utility lines outside the plat.
The minimum easement width should be 20 feet. Maintenance access to the ponding
areas shall be provided. Slopes shall not exceed 4:1 over the easement areas.
23. The applicant will be required to enter into a development contract with the City and
provide the necessary financial security to guarantee the installation of the public
improvements and compliance of the conditions of approval.
' Don Ashworth, City Manager
July 31, 1995
' Shamrock Ridge, #94 -7
Page 5
24. All utility and street improvements shall be constructed in accordance with the latest
edition of the City's Standard Specifications and Detail Plates. Detailed street and
utility construction plans and specifications shall be submitted to staff for review and
formal approval by the City Council in conjunction with final plat consideration.
25. The applicant shall apply for and obtain the necessary permits from the Watershed
' District, DNR, Department of Health, MPCA and other appropriate regulatory agencies
and comply with their conditions of approval.
' 26. Upon completion of site grading, all disturbed areas shall be restored with seed and
disc- mulched or wood -fiber blanket within two weeks of completing the site grading
unless the City's Best Management Practice Handbook planting dates dictate otherwise.
' All erosion control measures shall be in accordance to the City's Best Management
Practice Handbook.
' 27. Upon completion, the developer shall dedicate to the City the utility and street
improvements within the public right -of -way and drainage and utility easements for
' permanent ownership.
28. The existing home shall change its address to be compatible with the City's addressing
' system once the street has been constructed adjacent the house.
29. The grading plan shall be revised as follows: 1) provide for 2% boulevards and 3:1
' side slopes adjacent to all streets in accordance to the City's typical street standards; 2)
berming shall be prohibited from all street right -of -ways; 3) the proposed pond
between Gwendolen Court and Mary Bay shall be combined /relocated to the west of
' Gwendolen Court; 4) grading in the rear yards of Lots 4 through 8, Block 2 shall be
revised to drain rear to front; 5) an interim sediment pond shall be provided on Lot 12,
Block 3 until Lots 1 through 12, Block 3 are fully revegetated; 6) storm ponds shall be
' designed and constructed with a 10:1 bench at the normal water level (NWL) for the
first one foot (depth) of water and then 3:1 thereafter or 4:1 slopes overall.
7) the proposed berm west of the westerly private driveway shall be relocated westerly
' to improve sight distance on Lake Lucy Road from the private driveway.
30. Lake Lucy Road shall be designed and constructed to meet State -Aid standards.
31. Preliminary P P and final plat approval shall be contingent upon utilities being extended
from Brenden Pond unless other feasible alternatives are provided to the City for
' review and approval.
Don Ashworth, City Manager
July 31, 1995
Shamrock Ridge, #94 -7
Page 6
32. Lake Lucy Road shall be realigned southerly to be compatible with the intersection
proposed in Brenden Pond (Lake Lucy Road and Pondview Court).
33. Direct driveway access on to Lake Lucy Road shall be prohibited. A private driveway
shall be required to access Lots 4, 5, and 6, Block 4 in accordance to the City's private
driveway ordinance.
In addition, it is our understanding that the following items were part of the approval of the
plat:
Outlot B is deemed undevelopable.
The private drive servicing Lots 4, 5, and 6, Block 4 must be located outside the 30
foot conservation easement.
STAFF RECOMMENDATION
Staff recommends the City Council adopt the following motion:
"The City Council approves a one year extension, until November 28, 1996, for preliminary
plat (Sub #94 -7), Shamrock Addition, to subdivide 37.92 acres into 45 single - family lots
subject to all the conditions approved as part of the preliminary plat approval and the
following conditions:
34. Outlot B is deemed undevelopable.
35. The private drive servicing Lots 4, 5, and 6, Block 4 must be located outside the 30
foot conservation easement.
36. The City reserves the right to reevaluate the subdivision and require changes to the
plat based on the city's approval of any ordinances that may be adopted during the
preliminary plat time extension."
ATTACHMENTS
1. Letter from Edward and Mary Ryan to Kate Aanenson dated July 6, 1995.
2. Location map.
3. Reduced copy of preliminary plat.
Shamrock Ridge
Edward M. and Mary K. Ryan
6730 Galpin Boulevard
Excelsior, Minnesota 55331
(612) 943 -1410
July 6, 1995
Ms. Kate Aarienson
CITY OF CHANHASSEN
690 Coulter Drive
Chanhassen, Minnesota 55317
Dear Kate:
As you requested, we are requesting in writing a one (1) year extension on
our preliminary plat.
The process to final plat has taken longer than planned, including the
decision regarding a development partner. We feel that the selection of a
development partner is critical and our choice must assure a high level of
confidence from all parties involved. It is also our wish to assure the
highest level of sensitivity to the approved plans and land forms.
Thank you for your consideration. If you have any questions, please let us
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Ed r an Mary K. yan
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