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'CITY OF SAN BERr:'RDINO
File No. 1. 669
- REQUEST I""'OR COUNCIL ACTION
Date:
3-2 &-91
Approval of Change Order No. ONE
Pavement Rehabilitation on Base
Line Street, from Medical Center
Drive to Crestview Avenue, per
Plan No. 7870 - FONTANA PAVING, INC.
I
From:
!<J:C'O Subilct:
I.... .-ADMIN. Off.
Public works/Engineeri!j99\ MAR 28 AM 9: 04
ROGER G. HARDGRAVE
Dept:
Synopsis of Previous Council action:
June, 1988 - Allocation of $970,600 in 1988/89 Stret Construction
Fund Budget approved.
04-16-90 -- Resolution 90-129 adopted authorizing execution of
Program Supplement No. 56, to obligate $24,782 in FAU
Funds for preliminary engineering.
10-02-90 -- Resolution 90-405 adopted authorizing execution of
Program Supplement No. 63, to obligate $1,063,499 in
FAU funds for construction and construction engineering
costs.
01-07-91 -- Resolution No. 91-5 adopted awarding a contract for the
low bid price of $709,902.45.
Recommended motion:
That Change Order No. One to the contract with Fontana Paving, Inc.,
for the Pavement Rehabilitation on Base Line Street, from Medical
Center Drive to Crestview Avenue, in accordance with Plan No. 7870,
be approved, to authorize additional cold planing and quantities of
asphal t concrete, and deletion of hot surface recycling, for an
estimated increase of $64,618.40 in the contract price, from
$709,902.45 to $774,520.85.
cc: Shauna Edwins
Andy Green
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Signature
Contact person:
Roqer G. Hardqrave
Phone:
5025
Supporting data attached:
Staff Rot. & CCO #1
Ward:
1.2&6
FUNDING REQUIREMENTS:
Amount: $64.618.40 (86% Fede~al-Aid Urban Funds)
Source: (Acct. No.)
242-362-57669
(Acct. Description)
Base Line Street, Medical Center
Finance: Cl-W t) r-
Drive to Crestview Avenue
Council Notas:
75-0262
Agenda Item No -:::;-.v
, CITY OF SAN BERC:;ARDINO - REQUEST())R COUNCIL ACTION
STAFF REPORT
Preparation of the plans and specifications for the
rehabilitation of the existing pavement on Base Line Street,
from Medical Center Drive to Crestview Avenue, was based upon
corings of the asphalt concrete by a geotechnical firm and a
deflection analysis by the County Transportation Department. As
a result of these studies, the County Transportation Department
recommended grinding 2 inches of asphalt, heating and recycling
the top 1 inch of the remaining asphalt concrete, placing re-
inforcing fabric, and placing 2 inches of new asphalt concrete.
These recommendations were in accordance with Federal Highway
standards and procedures, and were, therefore, approved by
Caltrans.
After grinding 2 inches of existing asphalt concrete from
Medical Center Drive to Route I-215, the remaining layer of
asphal t pavement was determined to be an asphalt-sand mixture.
This layer is approximately 1 inch thick, and appears to be an
old pavement overlay utilizing inferior material. This layer is
unsuitable for heat rejuvenation, as evidenced by the fact that
the sub-contractor has refused to guarantee his work.
The County Transportation Department and the Geotechnical
Engineer have re-evaluated the remaining pavement section and
have recommended removing the partial remaining layer and
replacing it with one inch of asphalt concrete, instead of
heating and recycling. The reinforcing fabric and 2 inches of
new asphalt would still be placed above this layer, as directed
by the project plans.
Caltrans has reviewed and approved this revised method to
reflect actual conditions encountered.
Change Order No. One authorizes the Contractor to cold
plane the remaining 1 inch of the partial layer, and replace
with a layer of new asphalt concrete pavement, and to delete the
hot surface recycling. Change Order No. One authorizes a net
increase in the contract price of $64,618.40, from $709,902.45
to $774,520.85. The total estimated project cost includes an
amount of $112,597.55 for contingencies, which can be used to
finance the cost for this change order. Federal-Aid Urban Funds
will be used to finance 86% of the cost for this extra work.
We recommend that Change Order No. 1 be approved.
URGENCY CLAUSE
Cold planing of the top 2 inches has been accomplished between
Medical Center Drive and Route I-215. The partial remaining
layer is breaking up, which creates dust and potholes. This
si tuation needs to be alleviated as soon as possible. The
Contractor has indicated that, weather permitting, cold planing
of the additional 1 inch can be started on Monday, 4-1-91.
3-28-91
75-0264
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Extra Work at Aqreed Price:
Cold Plane additional 1" of A.C. between stations
9 & 70 and 67 & 86, full width -
38,580 B.Y. @ $O.63/S.Y. =
$ 24,305.40
Cold Plane to a depth of 3" instead
stations 71 & 54 and 158 - 70, full
60,655 S.Y. @ $0.20/S.~.
of 2" between
width
=
12,131. 00
Place 1",A.C. pavement leveling course between
Stations 9 & 70 & 158 & 70, Full width
5,484 Tons @ $29.50/Ton
Delete Contract Items:
Item No.5, Hot Surface Recycling
99,235 S.Y. @ $1.10/S.Y. =
161,778.00
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[109,158~50]
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Item No.6, Asphalt Rejuvenating Agent
85 Tons @ $287.50/Ton
[ 24,437.50]
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