The Evening statesman. [volume] (Walla Walla, Wash.) 1903-1910, 1908-02-05

need not require any great expenditure.
Fourth. There should be removed
from the bed of the stream, just above
the intake, the remains of a crib, built
there at the time of constructing the
intake but not afterwards removed.
The location of this crib is such as to
cause a current lending to drive all
the refuse right toward the intake,
which is the very thing we desire to
avoid. Still further rip-rapping should
be done along the bank of the stream
above the intake.
Fifth. At the auxiliary intake. near
the Wickersham bridge, the Weir cham
Der and gate is still open. There should
be substantial building erected at
this point for the purpose of enclosing
this chamber and for the storage OF
tools and necessary supplies to be used
i'm that vicinity. The concrete retain
ing wall, leading from the foot of the
weir along the stream at this point,
lis not as high as it was intended to be
by eighteen QS) inches. This wall
ought to be raised, lest in time of flood.
it be overhowe, in which case, much
of the pipe would be washed out and
the wall itself, destroyed.
Sixth. In the city, there has not yet
been constructed the Alder street MAN.
The tee and gate were constructed at
the time of laying the force main but
nothing further has been done. There
is a considerable portion of the city
ttat can never receive satisfactory SER
vice until this main is built. The small
street country, turning off from the
larger main as it does at right angles.
and then running up hill to feed this
territory, being fed entirely from be-
low, does we'll enough when there is
no particular draft far below it, but
when the heavy draft comes on the
lower elevations. the tendency is for
the rushing water in the larger main to
draw out the water from the side main
as water is lifted by the injector. in
stead of supplying an abundance IF
water under full pressure. 1t was in
tended that this Alder street main be
sixteen U6) inches in diameter. If the
city cannot afford SO large a main. it
ought at least to lay some main, if not
over ten 10) inches in diameter, for
the purpose Of giving proper protec-
ton and service to that part of the
city. If smaller main than sixteen
G6) inches in diameter be laid. it will
require to be removed and replaced
with a larger before any great length
OF time
My attention was called to
a slide which had occurred some dis
t. nee above the intake and to the mud
brought into the system as the result
Of this slide. There was such an
amount of mud precipitated into the
ST. cam that no series of settling basins
or filter beds would have been of am
The only relief in such a case
would be that afforded by the use of
an impounding reservoir. in my first
made in July 1904, 1
gave some time to the inquiry as to
where an impounding reservoir could
be located, but there has not yet been
a satisfactory answer found to the
question. The intake is at such q
heighth that it will enable us to seek
proper ground for such AMI impounding
reservoir at a very considerable dis
lance from the city and it is possible,
that eventually. it will be secured by
through some ledge and
using some lake. or other suitable
ground lying in some other watershed.
This is a matter beyond the financial
reach of the city at this time, but
which should be borne in mind and
property for which should be acquired
within a reasonable period of time.
Very respectfully,
r. H. THOMSON, Engineer. .