HomeMy WebLinkAbout2003-12-28 Arborist ReportJulie Hultman
From: kdwidin@comoest.not
Sent Sunday, December 28,200311:14pM
To. Jim Butler; Julie Hultman; Jay Johnson; Dennis Postler; Scott Richards
Subject: Oak Villa
I have reviewed the tneeinvenkory the tree preservation plan, the grading
plan, and the landscape plan, visited the site, and have the following comments
regarding the proposed plans for Oohoreen Village, Phase [:
1. The Tree Inventory:
a. the trees on site are mostly in fair to poor condition. Most of
the trees are planted evergreens or are volunteer deciduous trees, many of less
valuable species such eeboxe|der and cottonwood. Trees next kz the wetland are
mostly dead, due to fluctuations in water level.
b. the inventory does not include trees on several properties
bordering Oakgreen Ave. which are currently owned by the development company and
are included es part of Phase |. Why are these trees not included inthe
inventory? |f these trees were included, their diameters would offset the
diameter inches of trees tobe removed on other portions of the site. Also some
trees (NE portion of site) are included in the inventory but appear tobeon
|andvvhiohisnotovvnedbythedeve|opmentoompany - VVhyanetheaetnaee
included oe part of the trees tobesaved?
o. there are trees on the 8VV portion of the site near 58th St. which
are included as trees to be saved in Phase |, but are indicated to be removed in
Phase 11. |f plans for Phase ||do eventually include the removal ofthese
treeo, possible tree replacement will be calculated.
d. | re-calculated the total diameter inches ofsi trees on site and total diameter inches of significant trees to
be removed since, based on OPH Tree Preservation Ordinance 1307. a significant deciduous tree is 8 inches or more in
diornetor, boxe|dera are not included as significant trees, and only living trees are to be included in the totals.
The totals are:
Total diameter inches of significant trees on site =6787
(if trees inout|otoon east side are not added)
Total diameter inches of trees tobe removed =3372
2. Tree Replacement Required:
Based on the calculations above this would be108inches. The original calculation of2225 inches was modifed(per
Ordinance section 13O7.O7O)by woodland type factors for percentage of each type of tree being removed, bv fair condition
rating (50%) for the inches of pines grown as a plantation, and a 10% credit for preserving >50% of trees on the property.
There was also a credit given for 676 inches of trees in the landscape plan and 87 inches 5096) credit for the 174
inohesof trees proposed tobo moved onsite. Tree replacement can be satisfied by planting additional trees on site or by
paying cash in lieu of tree planting, m/hloh is calculated at a rate of $50.00 per replacement diameter inch ($8.400.).
3. Tree Preservation:
a. tree protection fencing is to be put up around trees to be saved prior to the start of construction and is to remain up
until construction is completed.
b. all contractors and sub-contractors should be informed of the purpose of the fencing and that it is not be taken
down until construction has been completed.
4. Landscape Plan:
The landscape plan is satisfactu, y with the following conditions:
a. Species chosen for planting are acceptable; however, "Greenspire" linden should represent only 10 -15% of the
deciduous trees planted on site due to its problems with stem girdling roots. I would also like to see a 8th type of
boulevard tree planted to increase variety.
b. What types of oaks are to be planted?
c. If looks as if there are quite a few "boulevard" trees to be planted on this site, including approx. 39 along Nutmeg
Ave. which, I believe. will be a street maintained by the City. In this case the following requirements should be met
regarding boulevard trees:
1. a tree lawn (area between curb and sidewalk or other hardscape) should be a minimum of 18 ft. wide, the tree
should be planted no closer than 8 feet to the curb and 0 ft. to any sidewalk or hardscape in order to allow enough room
for root growth and to prevent interference of roots with hardscape. If area is smaller than that (such as narrow planting
islands shown on sheets L2 and L3 at ends of buildings) an ornamental tree should be planted instead of a deciduous tree.
2. trees should be maintained by the developer for 4 years after planting (watering, pruning and replacement)
after which time the trees would be added to the City maintenance contract.
3. boulevard tree species should be alternated along the street to reduce problems of insect and disease spread
between trees of the same species.
d. The Plant Schedule should include the scientific (Latin binomial) of each plant proposed for the landscape
e. The Planting Detail should include the following language for B &B stock: " top of burlap and the twine around base
of trunk should be removed at planting time, as well as the first two rungs of any wire basket enclosing the root ball" and
"root ball should be set on firm soil at bottom of planting hole"
If you have any questions regarding this review, please contact me.
Kathy Widin
OPH Arborist