HomeMy WebLinkAboutAspro CO#2 FY20 Asphalt Overlay, Cont No. 992 9.21.2020 CITY OF WATERLOO , IOWA
CHANGE ORDER No. 2
PROJECT: F.Y. 2020 ASPHALT OVERLAY PROGRAM
CONTRACT NO. 992 Date Prepared : September17 2020 AMOUNT: $ 115, 205 .27 INCREASE
TO : ASPRO , INC . Contractor
You are hereby ordered to make the following changes from the plans and specifications or perform the
following extra work on your contract dated July 20 , 2020.
A. Description of change to be made or extra work to be done:
2001 Pavement, HMA, 2 . 5" High Traffic ( HT) Surface, 1 /2", PG 58-28H , No Friction
2002 HMA Pavement Samples and Testing
2003 Pavement Scarification
2004 Painted Pavement Markings, Solvent / Waterbourne
2005 Precut Symbols & Legends
2006 Temporary Traffic Control
2007 Disposal of Removed Asphalt
2008 Mobilization
B . Reason for ordering change or extra work:
All items on Change Order #2 are items to address HMA repair to E. Ridgeway Avenue and Hammond
Avenue pavements affected by spilled diesel from the Kwik Star tanker truck incident on Thursday,
August 20 , 2020 . Diesel fuel dissolves the asphalt binder and is currently affecting the pavement
surface. Core samples taken by the Engineering Department at various locations in the affected area
indicate that the diesel has been absorbed into the existing surface layer.
Recommendations from the Asphalt Paving Association of Iowa (APAI) and Aspro are to remove and
replace the affected material . Aspro's recommendation is to remove the surface layer (2") and mill 1 /2"
into the upper portion of the intermediate layer, reapply a layer tack coat, and then place a 2- 1 /2"
surface layer. This will remove the contaminated asphalt and restore the roadways to acceptable
condition . The removed contaminated material is not reusable for HMA pavements or shouldering
material and must be properly disposed . Aspro has made arrangements to dispose the removed
material at the Black Hawk County Landfill .
C . Settlement for cost of work to be made as follows :
Bid Item Unit Est. Qty. Unit Price Total Bid Price
2001 TON 526. 95 $ 133.80 $ 70, 505. 91
2002 LS 1.0 $ 500.0o $ 500.00
2003 SY 3665. 8 $ 6. 95 $ 25,477. 31
2004 STA 21. 72 $ 55. 00 $ 1, 194. 60
2005 EACH 2.0 $ 500.00 $ 1, 000.00
F:KO6:::l LS 1 1.0 $ 6,800.00 $ 6, 800.00
2007 TON 527.0 $ 9.35 $ 4, 927.45
2008 LS 1.0 $ 4,800. 00 $ 4, 800.00
$ 1151205 .27
Change Order No. 2 Contract No . 992 Sheet 1 of 2
TOTAL INCREASE $115, 205.27
BY: Dwntin Hart 9/21/2020 ASPRO, INC. _
Mayor Date CONTRACTOR
BY.
Date
TITLE: V
ATTEST:
k'ellq �cichle 9/21/2020
City Clerk Date APPROVED:
ity Engine6r Date
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Change Order No. 2 Contract No. 992 Sheet 2 of 2