96-144 Resolution No. 96-144
RESOLUTION
APPROVING THE WALTON ISLAND RESTORATION PROJECT
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF ELGIN,
ILLINOIS, that it hereby approves the Walton Island
Restoration Project dated May 8, 1996 .
s/ Kevin Kelly
Kevin Kelly, Mayor
Presented: May 8, 1996
Adopted: May 8, 1996
Omnibus Vote: Yeas 7 Nays 0
Attest:
sl Dolonna Mecum
Dolonna Mecum, City Clerk
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in
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April 16 , 1996
TO: Mayor and Members of the City Council
FROM: Richard B. Helwig, City Manager
SUBJECT: Walton Islands Restoration
PURPOSE
The purpose of this memorandum is to provide the Mayor and
members of City Council with information to consider the
Walton Islands Restoration project.
BACKGROUND
During the 1996 budget sessions, the City Council chose to
reduce the funds for the Walton Islands Restoration project
with specific instructions to install the previously pur-
chased bridges and incorporate soft edge shoreline treat-
ment. Staff contacted a number of experts, including Mr. Don
Roseboom, State of Illinois Office of Water Quality, who is
considered to be the expert in stream bank restoration. A
combination of Tri-Lock (or equal) , Lunkers and minimum use
of Fiber Rolls was recommended for Walton Islands . In addi-
tion to the shoreline treatment and bridge installation, the
Highland Avenue stairs and accompanying peninsula will be
removed, grading done and a paved path built for ADA accessi-
bility. Reforestation would be bid as an alternate.
Attachments to this memorandum include the Revised Master
Plan for Walton Islands (soft edge treatment) , a Preliminary
Cost Estimate, and product literature on the Tri-Lock erosion
control system.
COMMUNITY GROUPS/INTERESTED PERSONS CONTACTED
The conceptual plans were reviewed by the River Front Develop-
ment Committee, Parks and Recreation Advisory Board and a
public meeting was held in March.
FINANCIAL IMPACT
Walton Islands Restoration improvements totaling $430, 000 has
been budgeted in Account No. 275-0000-791-92 . 32 , project
number 507400, Riverboat Fund - Land Improvements .
Walton Islands Restoration
April 16 , 1996
Page 2
LEGAL IMPACT
None.
ALTERNATIVES
None.
RECOMMENDATION
It is recommended that the Mayor and City Council approve the
Walton Islands Restoration project.
Respectfully submitted,
Monica Bates, Director
Parks and Recreation
13 ,
Richard B. Helwig
City Manager
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MAY 8, 1996 E
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WP Ep .RE ESTATp ANDL TlN S—RE.IDEREOANALTERNrE ND.
' ¢ d CITY OF ELGIN
_ p WALTON ISLANDS E DEPARTMENT OF PARKS AND RECREATION
d REVISED MASTER PLAN ..'�' ELGIN,ILLINOIS 60120-5555
(SOFT EDGE TREATMENT) �J PHONE:847/931-6786 FAX 847/931-6144
Walton Islands
Preliminary
Cost Estimate
26 February 96
CODE ITEM Qty. Unit Cost Sub. Total
1 . Removal/Demolition 2 $12 ,000 . 00
of Bridges
2 . Bridge abutment 6 $11, 000 . 00 $66 , 000 . 00
3 . Tree Trimming & $10,000 . 00
Removal
4 . Lawn 6925 SY. $3 . 00 $20, 775 . 00
5. Removal Highland $ 1, 000 . 00
Ave. Steps
6 . Excavation of $105,000 . 00
Peninsula and Regrading
North and South Island
7 . Hauling/installation 3 $15, 000 . 00 $ 45,000 . 00
of bridges
8 . Highland Avenue $ 2, 000 . 00
Bridge repair
9 . Asphalt Path 10( 0 Lf. $25 . 00 $25, 000 . 00
10 . Tri-lock 40,000 SF $2 . 35 s . f . $94,000 . 00
(material only)
11 . Tri-lock installation 46, 000 SF $1 . 00 s . f. $40,000 . 00
Contingency $ 9,225 . 00
TOTAL PHASE 1 : $430, 000 . 00
1996 Budget Amount: $430, 000 . 00
Alternate Bids :
ITEM AMOUNT
1 . Walton Point $14 , 900 . 00
2 . Reforestation $23,500 . 00
Shade Trees, Flowering Trees
Shrubs, Ground Cover
and Wetland Perennial
3 . Southern Connection 200 L.F. $5,000 . 00
Path to Hemmens
4 . Lights on Walton $95,000 . 00
Islands
5. Lights on Bridges $30, 000. 00
Note: Estimates are based on those prepared by EDAW and American
Excelsior Company.
WALTONCE.296/TEXT081/PDCOORDI .AT
Tri-lock a"'SPECIFICATIONS:
EROSION CONTROL SYSTEMS'
TRI-LOCK BLOCKS 4010 4015 4020 8030
HEIGHT 4 in. 6 in. 8 in. 12 in. Q
MODULE 16 in. 16 in. 16 in. 32 in.
WEIGHT PER SO. FT. 32 lbs. 45 lbs. 64 lbs. 90 lbs.
WEIGHT OF BLOCK PAIR (Approx.) 50 lbs. 70 lbs. 100 lbs. 560 lbs.
CONCRETE STRENGTH, 3000 psi
OPEN AREA (Approx.) 20%
TRI-LOCK MATS
Available Dimensions:
STANDARD WIDTH 4 ft.-8 in. 4 ft.-8 in. Information 6 ft:10 in.
STANDARD LENGTHS 16 ft. 16 ft. available Up to 48 ft.
18 ft.-8 in. 18 ft.-8 in. upon request 32 in. modules
NOTE: Special lengths made to order in large quantities.
MAT WEIGHTS
PER LINEAR FOOT 150 lbs. 210 lbs. Varies 620 lbs.
16 FT. MAT 2400 lbs. 3360 lbs.
18 FT-8 IN. MAT 2800 lbs. 3900 lbs.
AVAILABILITY
TRI-LOCK is well established nationwide and is made available through a if required for the duty of the carrier as indicated above. A side flap of not
portable wet casting operation or manufactured on standard concrete block less than 9"shall be provided to assure overlap of the filter panels assuring
machines used in concrete block manufacturing plants. Generally,TRI-LOCK irtecrity of the filter blanket.
is offered at or near the construction job-site on standard wooden pallets
in mat form. llt'STALLATION
GENERAL SPECIFICATIONS TRI-LOCK is installed by contractor's personnel using standard equipment
whether the system is installed by hand placing or through the use of pre-
TRI-LOCK flexible erosion control systems shall be comprised of three direc- assEmbled mats. A TRI-LOCK representative is generally available to advise
tonal interlocking concrete components of the sizes shown above, overlay- and assist the contractor. It is not necessary for the contractor's crew to have
ing a filter fabric, as specified. previous experience or special skills in order to economically install TRI-LOCK.
The TRI-LOCK System may be hand assembled on the bank by interlocking Site Preparation: Before placing the TRI-LOCK system,the slope shall
the components in a manner that allows maximum flexibility but discourages be inspected to insure that it is free from obstructions such as tree roots,
vertical movement of any single component. projecting stones or other foreign matter.Voids or soft areas should be filled
The concrete components shall be precast units having a compressive strength with suitable materials and well compacted. Although some variation in con-
of not less than 3,000 psi. The oven-dry weight shall be not less than 125 tour will be allowed,no sudden changes in level can be accepted.Hand
lbs. per cubic foot, as per ASTM C145, except that not more than 5% of dress where necessary.
components on any single mat shall be accepted under this minimum. Com
ssiv
e testing shall be conducted on 2"cubes cut from random samples TRI-LOCK revetment systems are normally backfilled with topsoil at the rate
pre
of ssivTRI-eOCK components. of 1 cu. yd. of topsoil to 200 sq. ft. In the event that revegetation is not
provided for,then the revetment must be backfilled to an average of 1"cover
The carrier filter fabric shall be of sufficient strength to support not less than on the filter fabric for the protection of the filter fabric against UV rays.This
11/2 times the weight of the mat when slung by lifting at the ends.The carrier backfilling should be executed within 14 days of completion of revetment.
filter fabric shall consist of a suitable fabric,as separately specified,reinforced Average material required will be 1 yd. to 500 sq. ft.
American Excelsior Company
AN EMPLOYEE OWNED COMPANY
P.O. Box 5067 1850 Ave. H East/Arlington TX 76011 /(817)640-1555/Telex 735298 AMEXCO/Telefax(817)649-7816
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LOCK BLOCKS
34 LBS.
KEY BLOCKS
17 LBS. �S
''�•* ei oc�S••
0t
Block System Block Polr
Height Unit Weight Open Area
weigh Brea covered
4 Inches 30-32 lbs/sq.ft. 20 percent 50-52 lbs 1.54 sq.ft.
Figure 2.3. Block geometry and system specifications, Tri-Lock 4010 revetment.
25 Resource Consultants & Engineers, Inc.