The Emmett index. [volume] (Emmett, Idaho) 1893-1925, 1916-12-07
SEWAGE SYSTEM PLANS
NEARLY READY
System to Cover Entire City and
Large Enough for Popula-
tiOn of 5000.

| Clark, composing the committee on
sewers, presented the report of F. c.
Horn of Boise, who has been employ
ed by the city as consulting engineer
of the proposed sewage system to en-
brace that portion of Emmett not al
ready provided with sewer facilities.
Mr.. Horn spent several days last week
going over the district and checking
up City Engineer Knowles's plans. His
report follows.
Herewith l submit brief report
with estimate of cost of your proposed
sewage system. 1t is based on the
general outline given me by Mr..
Knowles, your city engineer, and is
figured for a population of 5000,
which you stated to me was the num-
Der you want provision made for. The
amount of sewage per capita is set
at 100 gallons with the sewers run
ming two-thirds full.
1t is intended that all sewers be laid
with tight Portland cement joints,
and constructed in such a way that
the seepage water in the ground will
not be permitted to enter.
After an examination of the pro-
posed sewage districts in Emmett with
view to making an estimate of the
probable cost of the construction of
same, based upon the general plan as
proposed by your city engineer, Mr.
Knowles, l submit the following for
your consideration:
The main trunk sewer from McKin-
ley Avenue and Fourth Streets to
Station 1854 is shown on the pro-
file, indicating the main sewer leading
to an outlet in the Payette River. This
outlet would be submerged below
high water to a probable depth of five
feet and terminate in substantial
concrete bulkhead, so designed as to
give proper protection to the sewer
pipe. This main sewer includes the
following:
1880 feet of II inch pipe with "Y"
each so feet, 2146 #. 15 inch pipe with
"Y" each so feet, 6164 feet "a inch
pipe with "Y" each so feet, outlet
bulkhead, 21 manholes, the total cost
of which l estimate to be S19,7S7.
The district sewage system propos-
ed, for which the main trunk sewer
provides an outlet, consists of:
200 feet inch pipe, 32,430 feet 8
inch pipe, $40 feet 10 inch pipe, II
manholes, 81 flush tanks, and pri-
vate "Y" connection at each so foot
lot, the total of which is estimated to
cost approximately s39,O57.
The basis used for the determina-
ton of the correct sizes of pipe to
be used in this system, is 100 gallons
per capita per day maximum, the
sewers running two-thirds full. On
this basis the factor of safety for i'm
probable emergency is ample for
of 5000 souls.
Flush tanks are proposed at the
upper ends of all outside limit sewers
such tanks being arranged to dis
charge not to exceed once in twenty
four hours. This will provide thor
oughly sanitary condition if each tank
has capacity of 500 gallons of water.
The blue print herewith is made
from a tracing loaned by Mr.. Knowles
and on which the lines in red indi-
cate the proposed sewage system, man
holes and flush tanks being indicated
by red circles. At all angles and
sewer intersection, manholes are
shown. Flush tanks are located as
above noted.
l would recommend that a proper
purifying tank be placed back of the
outlet in order that sewage may be
rendered harmless before being dump
ed into the Payette River. There is a
on foot to secure legislation
IN the subject of stream pollution, and
t is expected that this will come up
before the next legislature. The U.
5. Government has laws covering this
subject, applicable to navigable
streams, and the individual states are
llso taking up the matter and enact !
ng laws forbidding the pollution of '
streams, so that it is certain that
ooner or later you will be forced to
make provision for the publication
# your sewage, and would advise t
hat you seriously consider the ques-
ion at this time. The additional ]
ost to install such apparatus need
ot exceed about $4,000
The short piece of sewer west of i
he depot, which is a part of the pre-
ent outlet, should be replaced with
ew section, as the present grade is
4 the opposite direction to what it
hould be on the new work. The old t
ne cannot be taken up and re-laid