CITY OF OAK FOREST EMERALD ASH BORER PRESENTATION

oak.forest.org

CITY OF OAK FOREST EMERALD ASH BORER PRESENTATION

CITY OF OAK FOREST

EMERALD ASH BORER

PRESENTATION


WHAT IS EMERALD ASH BORER?

EMERALD ASH BORER(EAB) is a nonnative

species to North America.

• ARRIVED IN THE UNITED STATES IN

2002

• Adult beetles are bright metallic

green in color.

• Adults are one third inch long and

one sixteenth inch wide.

• They have rounded abdomens and

flat backs and are present from mid‐

May through late July

2


ASH TREE IDENTIFICATION

• GREY DIAMOND

SHAPED BARK

• BRANCHES THAT

GROW OPPOSITE OF

ONE ANOTHER

• A COMPOUND LEAF

COMPOSED OF

SEVEN LEAFLETS

3


SIGNS OF INFESTATION

• CANOPY

DIEBACK

•D‐SHAPED EXIT

HOLES

•EXCESSIVE

SPROUTING OR

GROWTH AT BASE

OF THE TREE

•SPLITS OR

FISSURES ON

TRUNK

4


MAP OF CURRENT INFESTATION

5


IMPACTS OF EMERALD ASH BORER

• SIGNIFICANT CHANGE TO THE URBAN

LANDSCAPE OF THE CITY

– MANY STREETS IN THE CITY HAVE MATURE ASH AS

THE PRIMARY PARKWAY TREE

• UNEXPECTED EXPENDITURES FOR

TREATMENT/REMOVAL/REPLACEMENT

– ANY OPTION WILL HAVE SIGNIFICANT BUDGET

RAMIFICATIONS OVER AN EXTENDED PERIOD

6


EXPERT RECOMMENDATIONS

• CURRENTLY THE USDA

AND IDA RECOMMEND

REMOVAL OF INFECTED

TREES

• TREATMENT IS ANOTHER

OPTION, HOWEVER THIS

WILL NOT ERDICATE THE

BORER.

9


TREATMENT OPTIONS

• CHEMICAL TREATMENT

– TRUNK INJECTED

INSECTICIDE

– SOIL DRENCH/INJECTED

INSECTICIDE

• REMOVAL OF TREES

– IN HOUSE

– CONTRACTED SERVICES

10


QUOTATION FOR EAB TREATMENT

COMPANY LOCATION Tree‐age

5ML

Tree‐Age

10 ML

XYTECT

5 ML

XYTECT

10ML

4 Seasons Arbor

Service Crestwood, IL $10.00 $20.00 $6.00 $12.00

Barr Tree Care, LLC Channahon, IL $5.90 $8.65 $1.68 $2.18

Grounds Keeper

Landscape Care Orland Park, IL $7.90 $11.50 $3.70 $5.40

Homer Tree Care

INC. Lockport, IL $6.35 $8.64 $3.10 $4.99

Precise Tree Care Frankfort, IL $6.25 $9.45 $2.05 $2.95

TruGreen Crestwood, IL $4.75 $7.40 $0.90 $1.40

Winkler's Tree and La Grange Park,

Landscaping IL $7.87 $11.37 $2.75 $5.00

ALL PRICES LISTED ARE PER DIAMETER INCH

11


PUBLIC WORKS DEPARTMENT PLAN

• PHASE I.

– IDENTIFY ALL CITY OWNED ASH TREES

• TREES WILL BE TAGGED, THE GPS COORDINATES WILL

BE RECORDED, AS WELL AS THE CONDITION.

• PHASE II.

– REMOVAL OF HEAVILY INFESTED TREES

– CONTINUE MONITORING MARKED TREES

• PHASE III.

– CONTINUED REMOVAL AND REPLACEMENT

12


EXPECTED EAB RELATED

EXPENDITURES

• INJECTION OPTION

– $115.00 PER TREE EVERY TWO YEARS

• 2500 TREES X $115.00 = $287,500.00 (CONTINUOUS)

• REMOVAL & REPLACEMENT OPTION

– CONTRACTED SERVICE

• $850.00 PER TREE FOR REMOVAL AND REPLACEMENT

OF TREES

– IN HOUSE OPTION

• $250.00 PER TREE FOR REPLACEMENT

• ADDITIONAL COSTS FROM MAN HOURS

13


ADDITIONAL EQUIPMENT

• ADDITIONAL CHIPPER:

– $35,000.00

• GRADALL:

– $125,000.00

14


DISPOSAL OF LOGS AND CHIPS

• WILL BE DISPOSED OF AT NO COST TO THE

CITY.

– LOGS CAN BE USED FOR MANY DIFFERENT

PURPOSES (I.E. FURNITURE, PALLETS)

– CHIPS CAN BE TURNED INTO MULCH

15


PROS VS. CONS OF OPTIONS

• TREATMENT VS REMOVAL

• COST

• MAN HOURS

• SAFETY

16


TREE REMOVAL/REPLACEMENT COSTS

YEAR

CONTRACTOR

COST

IN HOUSE 5 YEARS

1 $425,000 $93,750 $47,000

2 $425,000 $93,750 $47,000

3 $425,000 $93,750 $47,000

4 $425,000 $93,750 $47,000

5 $425,000 $93,750 $47,000

6 XXXXXXXXXXXXXX XXXXXXXXXXXXXXXX $47,000

7 XXXXXXXXXXXXXX XXXXXXXXXXXXXXXX $47,000

8 XXXXXXXXXXXXXX XXXXXXXXXXXXXXXX $47,000

9 XXXXXXXXXXXXXX XXXXXXXXXXXXXXXX $47,000

10 XXXXXXXXXXXXXX XXXXXXXXXXXXXXXX $47,000

TOTAL: $2,125,000 $468, 750 $470,000

IN HOUSE 10 YEARS

17


RESIDENTIAL ASH TREES

• RESIDENTS HAVE THE

OPTION TO HAVE THEIR

TREES TREATED AT THEIR

OWN EXPENSE.

• ORDINANCE 90.105

ALLOWS FOR REMOVAL OF

NUSIANCE TREES.

18


DEPARTMENT RECOMMENDATION

• IN HOUSE REMOVAL OVER 5 YEARS

– TREES IN AREAS THAT ARE SIGNIFICANTLY

INFESTED WILL BE REMOVED FIRST.

• REPLACEMENT OF 75% OF TREES OVER A 5‐10

YEAR PERIOD

19

More magazines by this user
Similar magazines