HomeMy WebLinkAboutRe: ordinance complaince I .�
�Bonestroo
Memo ���
ErgMeers 6 MCMitects
Project Name: Backes Residence, 2940 Fox Street Client: City of Orono
To: Evelyn Turner, City Planner File No: 139-06-000
From: John Smyth, C.W.D. and Amy Carolan, Date: 7/31/2006
Ecologist
Re: Buffer Ordinance Compliance
Remarks:
Per Division 1. Sec. 78-1601 of Orono's Wetland Protection Ordinance, the proposed construction on the
above listed property triggers the city's ordinance due to the following:
• Disturbed property drains towards the wetland.
• �rading exceeds 50 cubic yards.
• Net increase in the square footage of impervious surface area.
The wetlands found on this property have both been classified as Manage 3 wetlands, which require a
buffer width of 16.5 feet.
The following is a summary of the issues that exist with the current plan submitted to the City, and
the requirements per the Wetland Protection Ordinance to be in compliance:
1. According to the current grading plan, the patio surrounding the pool is located in the setback. City
ordinance states that all principle and accessory buildings must be set back a minimum of 20 feet
from the wetland buffer(Div. 5 Sec. 78-1608 (2)). Patio slabs and grade-level decks are exempt
from this rule which suggests the pool area may still be in compliance with the city's ordinance.
2. The patio surrounding the pool area will slope towards the wetland, and the reshaping of existing
contours on the east side of the home may channel surface runoff towards the wetland and buffer
(which lacks a complete setback area due to the patio).
• Per Div. 5 Sec 78-1608 (1� hard surface runoff must be treated in accordance with the
requirements of the city and appropriate watershed district.
• Recommendation: Extend native buffer vegetation to proposed contour line (968', NE of pool)
to filter runoff from patio, and east side of the home.
Bonestroo,Rosene,Anderlik and Associates,Inc. www.bonestroo.com
❑St.Paul O�ce: ❑Milwaukee Office: ❑Rochester Office: ❑Willmar Office: ❑St.Cloud O�ce: ❑Grayslake Office:
2335 West Highway 36 1516 West Mequon Road 112 7`"Street NE 205 Sth Street SW 3721 23rd Street S 888 East Belvidere Road
St.Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 Willmar,MN 56201 St.Cloud,MN 56301 Grayslake,IL 60030
Phone:651-636-4600 Phone:262-241-4466 Phone:507-282-2100 Phone:320-214-9557 Phone:320-251-4553 Phone:847-548-6774
Fax:651-636-1311 Fax:262-241-4901 Fax:507-282-3100 Fax:320-214-9458 Fax:320-251-6252 Fax:847-548-6979
� �
�Bonestroo
Memo ��k�
���
Englneers 6 Architects
3. Grading plan proposes reshaping of contour lines found within the buffer area, which will disrupt
buffer vegetation (applies to both wetlands on the property).
• A landscaping/seeding plan must be submitted outlining plans for restoration of the disturbed
portion of the buffer. Seeding plan must include 12 PLS Ibs/ac of native grasses and 5 PLS
Ibs/ac of native forbs containing four and five species respectively.
• An escrow may be required to ensure buffer vegetation is properly installed and maintained.
4. The buffer area should be protected during construction by a silt fence (applies to both wetlands
on the property).
• The current plan shows the silt fence being installed within the buffer area; however it should be
placed outside of the buffer(offering protection to both the wetland and the buffer, Div. 3 Sec:
78-1605, (3h)).
5. Unacceptable buffer areas.
• Much of the understory vegetation found in the wooded portion of the wetland buffer(north of
the house) is dominated by the undesirable plant species, common buckthorn. Per Div. 3 Sec.
78-1605 2 this is unacceptable buffer vegetation and should be removed and replaced with
native vegetation. Removal of the buckthorn may help establishment of a better ground cover
that will enhance the treatment and wildlife habitat the buffer provides.
Bonestroo,Rosene,Anderlik and Associates,Inc. www.bonestroo.com
❑St Paul Office: ❑Milwaukee Office: ❑Rochester Office: ❑Willmar Office: ❑St.Cloud Office: ❑Grayslake
Office:
2335 West Highway 36 1516 West Mequon Road 112 7th Street NE 205 5th SVeet SW 3721 23rd Street S 888 East Belvidere
Road
St.Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 Willmar,MN 56201 St.Cloud,MN 56301 Grayslake,IL 60030
Phone:651-636-4600 Phone:262-241-4466 Phone:507-282-2100 Phone:320-214-9557 Phone:320-251-4553 Phone:847-548-
6774
Fax:651-636-1311 Fax:262-241-4901 Fax:507-282-3100 Fax:320-214-9458 Fax:320-251-6252 Fax:847-548-6979
''II BOneSL►oo
!J�Rosene
e m O �Associates
Engineers 6 Architects
Project Name: Backes Residence, 2940 Fox Street Client: City of Orono
To: Jeff Loucks File No: 139-06-000
From: John Smyth, C.W.D. and Amy Carolan, Date: 8/18/06
Ecologist
Re: Buffer Ordinance Compliance
Dear Jeff Shopek:
Before we can approve the construction plan for 2940 Fox Street we must receive a copy of the seeding
plan that will be used to restore the wetland buffer when construction is completed. The seeding plan must
include the list of species that will be used on site. Without the list of species, we are unable to confirm that
the construction plan meets the requirements of the City of Orono's wetland buffer ordinance.
To speed things along, I have designed a seeding mix (see attached excel worksheet) for the property that
meets the requirements of the City's ordinance. If a seeding mix has not yet been prepared for the site,
you may send us a letter stating that the property owner has agreed to use the seeding mix that Bonestroo
designed.
Also before we can approve the construction plan, we must receive confirmation that the property owner
will agree to remove the buckthorn that currently exists in the wetland buffer north of the newly constructed
home. Buckthorn must be removed by hand, with no heavy machinery as stated in a previous memo.
Please send us written confirmation that the seeding plan designed by Bonestroo will be used to restore
the disturbed portion of the wetland buffer (or send us a copy of the prepared seeding plan), as well as
confirmation that existing buckthorn will be removed by hand. Once we have received this document, the
construction plan can be approved.
If you have any questions, please contact Amy Carolan at (651) 604-4757.
Bonestroo,Rosene,Anderlik and Associates,Inc. www.bonestroo.com
❑St Paul Office: �Milwaukee Office: ❑Rochester Office: ❑Willmar Office: ❑St.Cloud Office: ❑Grayslake O�ce:
2335 West Highway 36 1516 West Mequon Road 112 7`h Street NE 205 Sth Street SW 3721 23rd Street S 888 East Belvidere Road
St.Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 Willmar,MN 56201 St.Cloud,MN 56301 Grayslake,IL 60030
Phone:651-636-4600 Phone:262-241-4466 Phone:507-282-2100 Phone:320-214-9557 Phone:320-251-4553 Phone:847-548-6774
Fax:651-636-1311 Fax:262-241-4901 Fax:507-282-3100 Fax:320-214-9458 Fax:320-251-6252 Fax:847-548-6979