HomeMy WebLinkAbout02/15/2011 Emerald Ash Borer Insecticide Treatments1 ?i
Mount Prospect Public Works Department
INTEROFFICE MEMORANDUM
(P.
TREE CITY USA
TO: VILLAGE MANAGER MICHAEL E. JANONIS
FROM: FORESTRY /GROUNDS SUPERINTENDENT
DATE: FEBRUARY 9, 2011
SUBJECT: BID RESULTS — EAB INSECTICIDE TREATMENT - $20,000
BACKGROUND
On January 31, 2011, sealed bids were opened for contractual treatment of selected Ash trees in
attempt to prevent their infestation by the Emerald Ash Borer. As authorized by the Village Board
in 2009, we have been treating these trees annually with the hope that we will be able to preserve a
small population of high quality Ash trees in our parkways. Previously, we have treated these trees
with a product called Imidacloprid. This year, due to recent research, we decided to also seek prices
for two additional promising insecticides, Tree -Age and Xytect. We also included a provision
which will allow us to extend the contract for a second year at the same bid prices, if both the
contractor and Village agree.
BID RESULTS
Eleven invitational bids were mailed and a notice was published in a local newspaper. Eight bids
and one "no bid letter" were received. The bid results were as follows:
H :',Forestry WORI) 2011 EAB INSECTICII)E BII) - MEMO.doc
Base Bid (Imidacloprid)
Alternate Bid (Tree -age)
Alternate Bid (Xytect)
Tree Care Company
Price /DBH inch
Price /DBH inch
Price /DBH inch
Winkler's Tree Service
$ 1.29
No Bid
No Bid
TruGreen
$ 1.49
$
3.90
$
1.69
Davey Tree Co.
$ 1.75
No Bid
$
1.75
Autumn Tree Care Experts
$ 1.92
$
9.00
$
2.24
Spring Green Lawn Care
$ 2.00
No Bid
No Bid
Kramer Tree Specialists
$ 2.25
$
11.00
$
3.00
McGinty Bros., Inc
$ 5.00
$
9.25
No Bid
Arborworks, LLC
$ 8.00
$
12.50
$
7.75
"No Bid" letter
Nels J. Johnson
H :',Forestry WORI) 2011 EAB INSECTICII)E BII) - MEMO.doc
Page 2 of 2
BID DISCUSSION
The bid specifications identified approximately 800 trees, totaling approximately 11,488 diameter
inches, which we expected to need treatment at the time the specifications were prepared. The
specifications allow us to split the contract between contractors using different products.
As far as insecticides to be used, Xytect has recently been recognized as a more effective option for
trees over 15" in diameter than Imidacloprid. In certain research studies, Tree -Age has been the
most effective at killing EAB larvae in infested trees, but, as can be seen from the bid results, it is
more expensive and has some other drawbacks such as higher toxicity to humans. Therefore we are
recommending treatment of trees up to 15" in diameter with Imidacloprid, and trees 16" and over
with Xytect.
We are currently in the process of remeasuring all trees needing treatment. We expect that
treatment of the smaller trees with Imidacloprid by the low bidder, Winkler's, will cost $7998.00
(6200 diameter inches x $1.29 /inch). We expect that treatment of the larger trees with Xytect by the
low bidder, TruGreen, will cost $11,999.00 (7 100 diameter inches x $1.69 /inch).
The low bidders, Winkler's Tree Service and TruGreen, have both worked satisfactorily for us in
the past. Winkler's has performed multiple tree trimming and removal contracts. TruGreen has
performed multiple fertilization and pesticide application contracts, including our 2009 and 2010
EAB Insecticide Treatment contract.
BID RECOMMENDATION
There are funds available for this contract in the 2011 Budget. I recommend award of a possible
two -year contract for Imidacloprid treatment to the low bidder, Winkler's Tree Service, in an
amount not to exceed $8000.00. Additionally, I recommend award of a possible two -year contract
for Xytect treatment to the low bidder, TruGreen, in an amount not to exceed $12,000.00.
In both cases, if year one is successful, and a contract extension is agreed to by the Village and the
contractor, year two will be in an amount not to exceed whatever is appropriated for this purpose in
the 2012 budget.
Sandy Clark
I concur.
Glen R. Andler
Director of Public Works
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