The Arvada enterprise., 1917-10-18
Sewer Inspection
Tour Satisfactory

Russell, A. H. Barth, c. M. Dan
ford and Trustees ]. A. Gorich
and w. w. Mobcrly to Littlcton.
Edgewater and Fort Logan for
the purpose of investigating the
sewer systems of these three
Lplaccs.
I The first place visited was
Edgewater, where they have what
is known as the lmhoff system.
Their plant is supposed to accom-
modate five thousand inhabitants,
according to the estimate of the
engineer who was responsible for
the plant, but Mr.. lett informs
lis that under all conditions $500
would be nearer the exact capac-
Iity of the plant.
The plant, however, is built on
tho same principal as the one at
Littleton, except that the dimcn-
sions are not so great. The sew
age is first received into round
tank, where the solids are separ-
a;cd from the liquids, the solids
going 10 the bottom of the tank
where at the proper intervals they
are drawn off and passed into
sludge basin, and as they have
been through the stage of dccom-
POSITION and all impurities remov-
cd, as we'll as offensive doors, they
can be hauled off and used as fer
tilizers for lawns or whatever
desired. The water from the tank
passes from the top by overflow
into , cyphone cylinder and a
valve then allows it to flow
through pipes into a basin with
concrete walls about two feet in
heighth and covered with shing-
led roof. Two lines or pipe run
the full length of this basin d.
viding the space so that the water
is sprayed from little fountains
every few feet in the pipes over a
1teringhed pr gravel about five
tfe6edc1P. 1hc ro6f is raised by
the rafters on the concrete walls
so as to allow the air to pass over
the gravel, and as the water flows
internationally the gravel has a
chance to dry out more or less,
thus preparing it to receive the
next course of water. The water
that passes over the gravel then
makes its way out through the
pcrforations in the walls and
down each side of the building to
the end, the same as though it
were in lead trough. and on into
the sewer pipes. 1t then passes
through under what is called the
chlorine chamber, where a chlor-
inc plant is housed. The chlorine
treatment is given, however, only
in case of an epidemic of some
kind, when it would be dangerous
to allow the sewage even after
the clarifying process just de-
scribcd, to pass into a running
stream.
The settling tank, as the first
receptacle for the sewage is called.
at Edgcwatcr is IL feet in diam
ctcr and rs feet deep. while at
Littlcton it is 20 feet in diameter
and % feet deep. The other parts
Of the plant were in proportion.
The Littlcton plant seemed to be
the most feasible for Arvada's use
and it is said to built with the idea
Of accommodating 5000 people.
The plant just described cost
Littlcton $4,000, and it was
pointed out that this part Of the
system could be easily duplicated
at approximately the same cost
whenever necessity demanded it.
We found also that Littlcton has
in lincal footagc about five miles
Of sewer piping laid. including, of
course. the latcrals and main line.
and that the main or trunk line
sewer is laid in twelve inch pipe,
while the latcrals arc eight and
six, and the house drains four.
The entire cost of this splendid
system to the town of Littlcton
is &29. 800, or approximately that
amount. We found also that the |
average cost per lot is $500 for
a lot 25xl23 feet. The assessment
may be paid in twenty annual
payments, or il the property hold
or prefers he can pay the cash and
receive a discount Of 3 per cent.
lie also has the option Of paying
il off in two years or declaring
his intentions at the end of two
years that he will pay on the
twenty year basis.
The party then visited the Fort
Logan plant and found il to be 4