Evening journal., 1907-04-23

i'm order to secure firmer foundations,
the extra concrete for this purpose en-
tailing an additional expense OF s672
About rs Ter cent Of the work on the
bridge is finished
Finish Pumping Station.
The pumping station is completed
except for finishing of hoors. etc. which
is being held back until the two pump
ing engines are Installed 4 few weeks
work viii clean up everything remain
ing to be done under the contract with
A. S. Reed & Brother Company.
The two twelve million gallon pump
ing engines being furnished under the
contract with the Holly Manufacturing
Company Of Buffalo, \. y. are both
being installed, the parts coming in
being erected as soon as received. The
pump ends OF both engines are now
IN place, and these steam ends should
follow shortly.
The contract was awarded to the
Pittsburg Filter Manufacturing Com
pany st being the lowest bidder.
The excavation was completed ami
the concrete construction commenced be-
fore the cold weather caused a cessa-
tion of the work Most OF the neces-
sary material is on hand, and the whole
structure should be finished by Junc
next
The preliminary filter Is a permanent
feature Of the work, the object which
Il Is intended to fulhil being the re-
moval of the grosser impurities from
the water before Il reaches the pumps
which are to force II to the new re-
servoir on the Weldn fam, the expert
mental work carried on at the labofa-
tory having shown tina. from 80 to Is
per cent OF both bacteria and turbidity
can be removed by the method adopt
cd The water from the race VIII flow
by gravity to the preliminary filter
and thence 10y gravity 20 the pumps
so no extra expense is entailed fol
pumpage under the plans as designed
Filter With Coke.
These filters are designed to operat'
at a rate Of about fftv million gallons
per acre, at which rate the capacity
OF those now under construction Will
be sixteen million gallons daily.
The hltering or straining medium S
coke ana SLOIlEEf NUltNM AIAS III hNAANtHA
the lines Of the Maigen filter with some
important changez chief Of which is
the introduction Of a system Of air
wash pipes. which enables the sponges
to he washed in place.
The removal of the greater quantity
Of sediment from the water beforl
pumpage, insures better service from
the pumps by freeing them from the
action OF the suspended grit natural "a
the water: It minimizes the work OF
cleaning the sedimentatlon basin, as
considerably less mud viii bc deposited
therein. and II Will increase the length
Of runs between scrapings OF the final
slow sand filters with n propOrtionate
decrease In the cost NJ maintenance
and provide greater uniformity in filte-
operation. and il is hoped, in bacterial
results also.
Plans are being prepared with view
10 building the slow sand filter and
filtered water reservoir. ant clpatins
favorable action by the Legislature IN
authorizing a bond ISSUE sufficient &c
cover the cSst Of this new work as Wen
as an other work or the water supply
Improvements already contracted for
and under way.
The proposed filter beds as planned
viii have an area Of four acres. the pres
ent expectation being that they can be
operated up 10 four million nate. Tho
filtered water basin IN connection there
with win have about ten million gall
Ions capacity. and as Cool Spring re
servoir WIZ he utilized for the further
storage OF filtered water there via be
combined storage of Glfered water
equivalent 20 ever three days supply a;
present rate Of consumption.
In connection with the utilization Of
Cool SpriEg restr rvolr FOR tie storage
OF the water fow'ng from the Porter
reservoir I have outlined herein the
project for utilizing the energy rcpre-
sented by the water required for the
low service suDply 6owing fr0m the