HomeMy WebLinkAbout2022-10-04 OPH Arborist Landscape Plan Review 11111
City of Oak Park Heights
14168 Oak Park Blvd N.•Oak Park Heights,MN 55082•Phone(651)439-4439•Fax 439-0574
Memorandum
To: Eric Johnson, City Administrator
Cc: Scott Richards, City Planner, Julie Hultman, Building Official
From: Lisa Danielson,City Arborist
Date: 10/4/2022
Re: Oak Park Heights Apartments-Hampton Companies Landscape Plan Review
I have reviewed the landscape plans submitted for the Oak Park Heights Apartments-Hampton
Companies dated 5/10/2022 (received by the City on 9/15/2022). The following includes my
comments and/or recommendations:
Tree Removals and Tree Protection Plan (Sheet Number C1.1)
1. The box at the top of the page labeled City of Oak Park Heights Removal Notes is empty.
Please reference City Ordinance 1307 for the requirements/items to add to this box.
2. Contractors doing any type of tree work must secure a City of Oak Park Heights Tree
Worker's License(annual license)from the City of Oak Park Heights Building Department.
All required documents must be submitted with the application. This must be added to the
plan sheet.
3. The tree protection diagram and notes included are very basic but acceptable.
Tree Preservation Plan(Sheet Number C1.2)
The Tree Preservation Plan shows a total of(99)trees are to be removed, (2)two trees are to be
protected and(42)trees are to be relocated.
Tree Preservation Plan Table (Sheet Number C1.3)
The information submitted on this page is incomplete and there are some edits that must be
made. The tree replacement requirement must also be met in either plantings or by the cash in
lieu of replacement option. The following requirements must be met:
1. The Tree Replacement Calculation equation and numbers used to calculate must be
shown on this page in the equation. The equation with the calculation is shown below:
[(NB) x C] x A=D
A=Total Diameter Inches of Significant Trees Lost as a Result of the Land Alteration
B= Total Diameter Inches of Significant Trees Situated on the Land
C=Tree Replacement Constant(1.33)
D= Replacement Trees (Number of Caliper Inches)
[(261 C.I./382 C.I.)x 1.33] x 261 C.I. =D
D=237.18 Replacement Caliper Inches Required
Credit for trees relocated on site:
59 C.I. significant trees located on site x 80%= 47.2 C.I. Credit Towards Replacement
Requirement
Tree Replacement Requirement with Credit Applied:
237.18 C.I. —47.2 C.I.= 189.98 C.I. Replacement Required
189.98 C.I.- 137.32 C.I. in Proposed Plantings= 52.66 C.I. Additional Tree Replacement
Required or Cash in Lieu of Replacement Option 52.66 C.I. x $150 per caliper inch (2022
rate based on OPH Fee Schedule)= $7,899.00
2. On the Tree Survey/Tree Inventory Table please note what the green highlighted lines
show.
3. In the Tree Replacement Calculation Table the number of trees to be relocated does not
correlate with what is shown for quantities on Sheet Numbers C1.0 and C1.2. All of
these must match.
Landscape Plan-Tree and Groundcover Plan (Sheet Number L1.0)
Landscape Notes
The landscape notes and planting detail submitted is incomplete. Please include the following
items/edits on the final plans:
1. The Landscape Notes section on the top of this page should be included on Sheet Number
L1.2 instead please make this change.
2. All trees must be landscape grade trees of good form and structure not Park Grade trees.
Trees with poor form will be more prone to storm damage and failure in the future. Please
include this in the planting notes.
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3. All trees must be straight and not need staking after planting. Contractor shall stake trees
only if the tree(s)begin to lean within the guarantee period, please include this in the final
planting notes.
4. The landscape contractor is required to plant trees and shrubs according to the approved
planting detail diagrams and landscape notes submitted with the final approved landscape
plan. This will be checked after planting and any deviations from the plans must be
corrected before the landscaping will be approved by the City, this needs to be noted in
the final plans.
5. Contractors doing any type of tree work must secure a City of Oak Park Heights Tree
Worker's License(annual license)from the City of Oak Park Heights Building Department.
All required documents must be submitted with the application.
6. The City Arborist will conduct an Initial Landscape Inspection after all plants/trees, mulch,
etc. have been installed.
7. The City Arborist will conduct a Final Landscape Inspection typically (1) year after
installation, at the end of the plant guarantee period. For Final Acceptance of Installation
and Landscape Plants the specified planting procedures must have been followed and all
plants must be alive and in good condition at the end of the plant guarantee period.
Overall Landscape Plan (Sheet Numbers L1.0, L1.1 and L1.2)
The proposed plant schedule includes a good selection of species diversity with some native or
improved cultivars of native plants. Most of the trees and plants chosen are hardy under local
growing conditions, relatively insect and disease free and fairly low maintenance.The plant sizes
included conform to the zoning ordinance requirements. A total of 137.32 caliper inches in
replacement trees are proposed to be planted.The proposed plant schedule(Sheet L1.2)includes
the following plants proposed to be planted:
• (20) Deciduous trees
• (14) Evergreen trees
• (26)Ornamental trees
• (104)Shrubs
• (338)Perennials& Grasses
The recommendations and edits I have for plan sheet numbers L1.0, L1.1 and L1.2 are listed
below:
1. I would like to recommend substituting the sugar maple trees planned to be planted with
another tree species besides maple to help the City work toward the Minnesota DNR
community tree canopy 20-10-5 guidelines. This means a community has no more than
20% of their trees within a single family, no more than 10% of their trees within a single
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genus and no more than 5% of their trees within a single species. As the City of Oak Park
Heights strives to work towards this goal this means avoiding planting any additional
maple trees throughout the City. Please update the proposed landscape plant list to
include trees other than maple.
2. The Planting Detail Diagrams included on the plans are acceptable, no changes need to
be made to them.
Additional Resources
If you are in need of some further information on the City of OPH Ordinances and Other
Resources in Regards to Trees, Planting and Landscaping please reference the following items:
o City of OPH Ordinances
o 401 (see 401.16 Design Guidelines Ordinance)
o 1302 (Shade Tree Diseases and Pests)
o 1304 (Tree Ordinance)
o 1305 (Shade Tree Program)
o 1307 (Tree Protection)
o City of OPH Development Application Packet(see Pages 10-12)
o City of OPH Design Guidelines Packet(see Pages 25 & 26)
o City of OPH Tree Species List
o City of OPH Tree Workers License Application
o American Standard for Nursery Stock (ANSI Z60.1-2014 is the most recent version)
published by AmericanHort
Please contact me if you have any questions regarding this landscape plan review. Please feel
free to forward my comments to the development team for this project.
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