Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1909-11-18

shall reduce the bacterial content of
the raw water to the extent of not
less than 81 per cent.
Fourth. That the filtrate shall show
no undecomposed coagulant. nor shall
the filtrate show an increase in iron
or alumina.
Fifth: The filtrate shall be clear,
bright and practically free from color,
turbidity, or matter in suspension.
Sixth: That the quantity of water
used in washing the filters shall not
exceed an average of 5 per cent of the
amount of the above given capacity.
Seventh: That the plant shall show
no failures. settlements or cracks
(other than expansion) for a period of
one year from the date of its compile
ton and final acceptance.
Eighth: That the plant shall be
constructed in a substantial and work
manlike manner, and the contractor
agrees to replace, at his own expense,
within one year from the date of COM
pletion Of said plant, any structure,
machine. building, reservoir, appliance
or material, or work proving defective
due to inferior Workmanship or mate
rial. or lack of stability or efficiency.
Ninth: The contractor especially
guarantees for period of one year
from the date of the completion of said
mechanical filtration plant. that the
foundation of the plant shall be stable
and sufficient to withstand all settle
ment in ordinary use, and that the
basins, reservoirs, buildings, walls.
Conduits. troughs, filter tanks and
other appliances shall be free from
rupture, cracks. (other than expan-
siOn), leakage. construction or distor-
ton Of any kind.
5. The contractor hereby agrees to
accept as full payment for all of the
work herein described, the sum Of
Sixty-one Thousand Dollars 1851 .OOO)
together with the extra sum of Eight
Hundred and Fifty Dollars (SS5O) for
full and complete sample table, as per
supplemental proposition, which is
hereby accepted, and also if herein
after accepted by the city. the extra
sum of ......... dollars, for an extra
coagulant pump, of capacity of 5000
gallons per minute, together with the
necessary pipe connections and valves
for pumping water from the coagulat-
ing basins to the filters, and also the
settled wash water to the coagulating
basins, all as shown in the extra pro-
posa1 submitted herewith and made
optional to the city, making in all as
here accepted, the sum of Sixty-oae
Thousand Eight Hundred and Fifty
Dollars ($61.S5O) or If the extra pump
and connections is hereinafter accept
ed, the total sum of ....., which
compensation shall be paid by the city
in cash in the following manner, viz:
Eighty-five per cent of the contract
price shall be due and payable upon
the completion and acceptance of the
structural plant. Said IS per cent
shall be paid in monthly installments
as the work progresses, in accordance
with the value of the work in place
and completed, as estimated and GER
titled to by the citys engineer in
charge
Ten per cent of the contract price
shall be paid to the contractor upon
the completion of a successful thirty
800 days efficiency test, as herein
specified.
The remaining per cent of the con-
tract price shall be due and payable
one year from the date of the struc-
tural completion and acceptance IF
said plant, providing that all specifica-
tons, tests and guarantees herein con-
tanned have been complied with.
6. 1t Is mutually understood and
agreed that should said plant or any
portion thereof show during the said
term of one year from the date of the
structural completion any instability,
weakness, improper leakage, or settle
ment, that the city shall notify the
contractor thereof in writing and IN
the event Of his failure within thirty
900 days of said notification to repair,
renew or replace such deficiency in
manner satisfactory to the city, and
complete such repair within reasona-
Bile time, the city may proceed, itself,
to make such repairs, renewals o.
other requirements as may be neces-
sary in its Judgment to procure the
reasonable stability of said plant, and
the city may reimburse itself from the
retained moneys In its possession for
all costs incurred, refunding the re