Jackson St Storm Sewer FinalMEMORANDUM
March 11, 2002
TO:
FROM:
SUBJECT:
The Honorable Mayor and City Council Members
Michael C. Van Milligen, City Manager
Jackson Street Relief Storm Sewer Project Acceptance
Public Works Director Mike Koch is recommending acceptance of the Jackson Street
Relief Storm Sewer Project, as completed by Portzen Construction, in the final contract
amount of $288,472.48.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Michael C. Van Milligen
MCVM/jh
Attachment
cc: Barry Lindahl, Corporation Counsel
Cindy Steinhauser, Assistant City Manager
Michael A. Koch, Public Works Director
TO:
CITY OF DUBUQUE, IOWA
MEMORANDUM
March 11, 2002
Michael C. Van Milligen, City Manager
FROM: Michael A. Koch, Public Works Director
SUBJECT: Jackson Street Relief Storm Sewer Project Acceptance
INTRODUCTION
The enclosed resolutions provide for the acceptance of the construction contract for the
Jackson Street Relief Storm Sewer Project.
DISCUSSION
Work has been completed on the project by Portzen Construction, Dubuque, Iowa, in
the final contract amount of $288,472.48.
When a project goes out for bid, the quantity of materials to be used is often estimated.
This is because the soil conditions vary from site to site. Table 1 outlines the costs
associated with bid item over-runs.
Table 1. Storm Sewer Construction Bid Quantity Over-Runs
Cost
Bid Item Explanation of Extra Over-Run
Civil Engineer Deron Muehring made an error when $22,000
putting the bid document together. The actual length
42" RCP of 42" RCP required was 300 feet more than the bid
quantity. This was discovered at the time of the bid-
letting. Adding the additional pipe did not change the
outcome of the bids.
6' Diameter MH The alignment of the proposed storm sewer was $4,000
modified. The adjusted alignment was made to avoid
an existing gas main.
Bedding Stone, Bedding stone used is over the estimated quantity. $3,800
1" Clean The bid quantity for bedding, limestone backfill, and
rolled stone base are only an estimate and can vary
depending on the soil conditions prevalent where the
storm sewer is being placed.
Limestone The bid quantity for bedding, limestone backfill, and $7,400
Backfill rolled stone base are only an estimate and can vary
depending on the soil conditions prevalent where the
j storm sewer is being placed.
3/4" Rolled The bid quantity for bedding, limestone backfill, and $3,800
Stone Base rolled stone base are only an estimate and can vary
depending on the soil conditions prevalent where the
storm sewer is being placed.
Total $40,000
From the outset of this project, it was understood that finding a place for a 42" storm
sewer amongst the existing utilities would provide a significant challenge. To meet that
challenge, the storm sewer alignment was modified and other utilities were relocated
(watermain, gas main, sanitary sewer, and other storm sewers). As indicated in the
correspondence to City Council regarding the award of the contract to Portzen
Construction, utility relocation costs were unknown at the time of the letting of the
contract because the exact location of the gas mains, water mains, sanitary sewers, and
other storm sewers were unknown until field located. Table 2 outlines the costs
associated with utility relocation.
Table 2. Utility Relocation and Street Repair
Work Performed Explanation Cost
3/4" Water All lead or copper water service lines in conflict with $21,300
Service the new storm sewer were replaced from the main to
the stop box per City policy.
Water Main The water main was moved in two locations to allow $5,100
Relocation the new storm sewer to pass through the 32nd and
Jackson Street intersection.
Sanitary Lateral The existing Dubuque Stamp and Amedcan Trust $4,000
Relocation sanitary sewer laterals were moved to pass the new
storm sewer.
Total $30,400
Another expense that exceeded cost estimates included in the bid documents was the
repair of the existing street. Once the project started it was discovered that Jackson
Street was once a concrete street and had since been overlaid with asphalt. In order to
rebuild the street, a concrete patch was required that was not anticipated.
Instead of replacing the asphalt pavement where the storm sewer trench was dug along
Jackson Street, the entire street from 30th to 32nd Street was incorporated into this years
asphalt portion of the Street Program. Table 3 illustrates the additional costs to the
storm sewer project.
Table 3. Street Related Work
Work Performed Explanation Cost
PCC Street Jackson Street was once a concrete street and had $34,900
Patch since been overlaid with asphalt. In order to rebuild
the street a concrete patch was required.
Asphalt All of the asphalt from 30th to 32th was removed as $6,200
Removal part of the asphalt resurfacing program.
Total $41,1 O0
RECOMMENDATION
I recommend that the City Council accept the improvements and the final contract to be
established at $288,472.48.
BUDGET IMPACT
A summary of the budget costs is as follows:
Estimate Bid Final
Construction Contract $173,980.47 $158,222.33 $288,472.48
Contingency 17,398.05 17,398.05 0
Engineering 28,706.78 28,706.78 28,706.78
Total Project Cost $220,085.30
$204,327.16
$317,179.26
The project will be funded from the General Fund from a Fiscal Year 2001 appropriation
of $231,000.
Two storm sewer projects completed recently had substantial balances remaining. The
$14,000 balance remaining from the completed Wilbricht Lane Storm Sewer Project and
the $35,000 balance remaining from the completed Hamilton Street Storm Sewer
Project will be applied towards the Jackson Street Storm Sewer Project. The balance of
the funding will come from the General Storm Sewer Construction Fund.
ACTION TO BE TAKEN
The City Council is requested to adopt the attached resolutions accepting the
improvements and establishing the final construction cost.
MAK/vjd
Prepared by Deron Muehring, Civil Engineer
cc: Pauline Joyce, Administrative Services Manager
Gus Psihoyos, Assistant City Engineer
RESOLUTION NO.153-02
ACCEPTING IMPROVEMENT
Whereas, the contract for the Jackson Street Relief Storm Sewer Project has been
completed and the City Manager has examined the work and filed his certificate stating that
the same has been completed according to the terms of the contract, plans and
specifications and recommends its acceptance.
NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
DUBUQUE, IOWA:
Section 1. That the recommendation of the City Manager be approved and that said
improvement be and the same is hereby accepted.
BE IT FURTHER RESOLVED that the City Treasurer be and he is hereby directed
to pay to the contractor from the General Storm Construction Fund in amount equal to the
amount of this contract, less any retained percentage provided for therein.
Passed, approved and adopted this 18th day of March ., 2002.
Terrance M. Duggan
Attest:
Jeanne F. Schneider, CMC,-City Clerk
RESOLUTION NO. 154-02
FINAL ESTIMATE
Whereas, the contract for the Jackson Street Relief Storm Sewer Project has been
completed and the City Engineer has submitted his final estimate showing the cost thereof
including the cost of estimates, notices and inspection and all miscellaneous costs;
NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
DUBUQUE, IOWA:
Section 1. That the cost of said improvement is hereby determined to be
$317,179.26 and the said amount shall be paid from the General Storm Sewer
Construction Fund of the City of Dubuque, iowa.
Passed, approved and adopted this 18th day of March, 2002.
Terrance M. Duggan, Mayor
Attest:
Jeanne F. Schneider, CMC, City Clerk
March ,2002.
or
FINAL ESTIMATE FOR:
City of Dubuque
ENGINEERING DIVISION
Jackson Street Relief Storm Sewer
ITEM QTY.
UNIT
42" RCP 1430.00 LF
Intake 104-B, Complete (CB-l) 1.00 EA
Intake (Neenah R-4999-L6) 1.00 Lump
6'Dia. MH Base 5.00 EA
6' Dia. MH Sidewall 35.49 LF
6' Dia. MH Flat Top 5.00 EA
Manhole Frame & Cover (Neenah R-1642-A) 5.00 EA
Manhole Frame (Neenah R-1642-A) & Cover (Neenah R-2501) 1.00 EA
Junction Box#l, Complete 1.00 Lump
install 4' of 15" RCP & 4' of 18" RCP (Pipe Supplied by City) 1.00 Lump
Bedding Stone, 1" Clean 1010.19 Ton
Limestone Backfill 2876.88 Ton
3/4" Rolled Stone Base 1337.94 Ton
5" ACC Street Patch w/Full Depth Saw Cut 280.79 Ton
8" PCC Street (Remove & Replace) 89.49 SY
Sodding 544.00 SY
4" PC Sidewalk 803.00 SF
PC Curb & Gutter (Remove & Replaca) 142.50 LF
Replace Landscape between Junction BoxY1 & CB-2 1.00 Lump
Traffic Contrel 1.00 Lump
Extra Work Performed
8" PCC Patch 57.00 CY
6" PCC Patch 191.25 CY
3/4" Water Service 507.00 LF
2" Insulation Board 3.00 Each
Remove & Replace Fire Hydrant 1.00 Lump
Relocate Water Main on Jackson St. 1.00 Lump
Relocate Water Main on Peru Rd. 1.00 Lump
Relocate American Trust Sanitary Lateral 1.00 Lump
Relocate Dubuque Stamp Storm Sewer 1.00 Lump
Relocate Dubuque Stamp Sanitary Sewer 1.00 Lump
Concrete Pipe Restocking Fee 1.00 Lump
Storm Sewer Junction Box 1.00 Lump
101-B, Complete 1.00 Lump
Traffic Loop installation 5.00 Each
TOTAL DUE CONTRACTOR
ENGINEERING
TOTAL CONSTRUCTION COST
I hereby ceffify that the above statement shows in detail the
correct amount of ail work required to complete the above improvement.
APPROVED:
Michael Van Milligen, City Manager
City of Dubuque,Iowa
The undersigned, , contractor for the above
improvement, does hereby accept the above "Total Due Contractor", as
full settlement for ali ~s_ fo~said impr.~7~ement.
DATE: March 7, 2002
UNIT COST TOTAL COST
$74.07 $105,920.10
$1,750.00 $1,750.00
$9,870.00 $9,870.00
$425.00 $2,125.00
$208.45 $7,397.89
$435.00 $2,175.00
$245.00 $1,225.00
$265.00 $265.00
$2,225.00 $2,225.00
$240.00 $240.00
$8.86 $8,950.28
$5.38 $15,477.61
$8.64 $11,559.80
$87~05 $24,442.77
$45.00 $4,027.05
$14.25 $7,752.00
$3.75 $3,011.25
$22.00 $3,135.00
$450.00 $450.00
$5,400.00 $5,400.00
$125.00 $7,125.00
$145.00 $27,731.25
$42.00 $21,294.00
$40.00 $120.00
$339.00 $339.00
$2,475.19 $2,475.19
$2,242.04 $2,242.04
$1,940.54 $1,940.54
$696.90 $696.90
$1,888.57 $1,888.57
$146.28 $146.28
$1,599.96 $1,599.96
$875.00 $875.00
$520.00 $2,600.00
$288,472.48
$28,706.78
$317,179.26
Public Works Director