Evening journal., 1913-05-14

charged, through the siphon flushing
all matters, which have found lodg-
ment. A discharge of once per day, it
is estimated, would be all the water
necessary to keep the sewers in good
sanitary condition. Manholes for in
spection and ventilation of the sewers
are provided for.
In his report Mr.. Hatton states that
the disposal plant designed is what
is known as the sedimentation and
sprinkling filters, and is the most
modern type known today, and is in
successful operation in a number of
places in the United States. The plant
consists of two-story sedimentation
tank, known as the Imhoff tank; de-
signed and patented by DR.. Imhoff, OF
Germany. The report gives a lengthy
description of the tank. dosing cham
bers and sprinkling filter, After going
through the process the sewage flows
to White Clay creek. II Is then in a
non-putresciable condition which
means that the decomposition of the
organic matters in the sewage has
been effected and no further nuisance
to the waters of the creek may be ex-
pected. The piping system, sludge
bed and final sedimentation tank are
also described. The plant designed
can successfully treat the sewage from
population of 5000, and is arranged
to be enlarged without in any way
tearing down or interfering with any
part of II. The cost of operating the
plant will embrace the cost Of one
mans time going to the plant once a
day for one hour and once in three or
four years changing the top foot or
two of the six feet Of crushed stones
in the filter and the disposing of the
sludge about three times year, which
would require two men and one team
two days.
The most interesting part of the re-
port to the citizens in general. is that
part dealing with the cost of the work,
which follows: The system Of sewers
as designed embraces about 4.76
miles OF sewers, all of which are to be
composed of s. 10 and 12-inch terra
Gotta pipe. except a few feet where
the sewers are built under railroad
tracks where cast iron pipe is to be
used. The approximate cost of build
ing the system Of sewers is $4,000
which includes the cost Of supervis-
ion and inspection. The total cost Of
! building the disposal plant, including
supervision and inspection, is $4,000
making the total cost for the system
OF sewers and disposal plant S51. 900.
The total lineal feet Of frontage in
which the sewers are designed to be
built is $4,000. Assuming that one.
third OF the assessments are paid
within thirty days after made, thereby
getting a five per cent. discount. Il
will make the total front foot assess.
ment upon the streets the sewers are
built s124.
Mr.. Hatton states in conclusion tha
the suggestion made by the commits
sion that provisions be made for The
Sewer Commission to build the hous'
connections from the sewer into th'
curb lines of the streets during thu
time the system was being constructed
, and that each owner be charged thu
same price for laying such connec
, tions was a good one. II could b.
| done much cheaper this way, he ex
= planned, but the consent OF the prop
| erty owner would have to be secured
! and an agreement as to paying 70
+ same. This plan would also save tn
: tearing up Of the surface of the street
9 so much.