HomeMy WebLinkAbout10.01.2001COUNCIL WORK SESSION
October 1, 2001
4:30 p.m.
Council Chambers
Members present: Anders, Krizek, Gronen, Berry.
Members absent: Jordan, Murphy, Getty.
Moved by Krizek, seconded by Gronen that the Agenda, as proposed, be approved. Ayes: Four.
Absent: Jordan, Murphy, Getty.
Jim Hagley, from Earth Tech, reviewed Change Order No. 7 for an increase in the amount of
$48,704.00 for the Waterloo Water Pollution Control Facilities, Contract No. 550. The change
order includes nine items. The change order provides for replacement of two 6" by 12" flanged
expansion joints with two 6" by 12" ductile iron pipe reducers and two 6" flanged expansion
joints for the Sludge Storage Mixing Pumps. It provides for removal and disposal of a layer of
loose material from the inside walls of Digester No. 5. The change order provides for removal of
two abandoned 8" pipes for installation of the new 8" decant pipe. An item included in the
change order provides for the revision of digester gas piping for Digester Nos. 2, 3, 5 and 6 to
eliminate conflicts with the digester cover skirts in the digesters. A fifth item in the change order
provides for the revision of digester sludge piping for Digester Nos. 2, 3, 5 and 6 to eliminate
conflicts with the digester cover skirts in the digesters. The change order provides for the
addition of masonry block filler to the coatings for the inside walls of the new portion of the
Digester Control and Lagoon Generator Buildings. The change order provides for replacement
of three 90 degree elbows with tees and the addition of three 1" ball valves with plugs on the
suction side of the Digester gas booster fans. The eighth item included in the change order
provides for removal of buried concrete found by Story Construction between Digesters Nos. 1
and 2 when they started excavating for the Sludge Transfer Wet Well. The final item in the
change order provides for the addition of three uninterruptible power supplies for three new
sludge storage and digester control panels at the Water Pollution Control Facilities site and one
for the new control panel at the anaerobic lagoon site. The present cumulative total of all change
orders is 5.86 percent of the original contract price and results in a new total contract price of
$10,557,664.00.
Councilperson Berry stated with the change orders the cost for the contract increases, and if this
is low bid we should look at these items when bidding the contract if increases are anticipated.
Bob Bamsey, from Earth Tech, stated that there are a number of reasons for change orders. It
could because information on drawings are completely different from the documents. Mr.
Bamsey stated that the goal is zero change orders, and that we don't anticipate increases but
allow for some.
Mr. Hagley reviewed Change Order No. 14 for an increase in the amount of $41,539.00 for the
Water Pollution Control Facilities, Contract No. 549. There are six items included in the change
order. The first item provides for removal of an existing 4" water main and its concrete
encasement for the installation of the 18" overflow pipe. The second item provides for the
addition of a load center, breakers, and wiring to wire up solenoid oilers for the three primary
sludge pumps. The third item provides for the addition of normally closed contacts from the
hand/off/auto hand switches to eliminate a safety concern in the primary sludge grinder control
panels. The change order provides for changes to the existing aeration blower controls at the
Satellite Water Pollution Control Facilities to integrate the Satellite blower controls with the new
aeration blower controls at the Easton Avenue WPCF. The fifth item provides for the addition of
twelve uninterruptible power supplies for twelve new and existing control panels for the Satellite
and Easton Avenue WPCFs site. The sixth item included in the change order provides for
modifications to the platform at the Easton Avenue Final Effluent Structure to accommodate the
manufacturer's installation of the ultra sonic level detection device. The change constitutes an
increase of 0.22 percent with respect to the original contract price. The present cumulative total
of all change orders is 1.57 percent of the original contract price and results in a new total
contract price of $19,389,157.00.
Council Work Session
October 1, 2001
Page 2
Bob Bamsey updated the council on the status of the EPA grant. The city received a grant in the
amount of $37 million for the sewer project which required a 45 percent local match. The total
project cost is $67,275,000, with two projects currently under contract. The $37 million EPA
grant will fund up to $67.8 million of projects, including $0.5 million of refunded state sales tax
to the city. Mr. Bamsey stated that once completed we will have maintenance costs and
equipment replacement.
Councilperson Anders stated that unfunded projects could be done on an annual basis using some
sewer funds.
Mr. Bamsey reviewed the Odor Control Facilities. The city has the Tannery and IBP, which
generate very serious odors. If kept in water there is no odor problem, but as soon as it is
exposed to air it has an odor. The first place the waste goes to is the raw waste pump station
where the gas is collected and sent to the trickling filter. With the new facilities, the trickling
filters are no longer used for odor control. Earth Tech is recommending that red lava rock be
used to treat the odor. The estimated cost for construction of a new odor facilities is
$500,000.00.
Mr. Bamsey reviewed the Satellite Interceptor Manhole Project. The estimated cost for the
manhole project is $300,000.00. Both the Odor Control Facilities and Satellite Interceptor
Manhole Project have been recommended by the Partnering Group.
With no further business before the council, it was moved by Krizek, seconded by Gronen that
the meeting be adjourned at 5:21 p.m. Ayes: Four. Absent: Jordan, Murphy, Getty. Motion
carried.
Nancy Eckert
City Clerk
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