Los Angeles daily herald., 1890-03-09

| Add to this SUM $105, 900 for any DOS
sible contingency, and we have a tota1
of 100000. If private association Of
business men were contemplating the
accomplishment of this PURPOSE thew
could do it in good, substantial work.
manlike manner for the sum named. &C
far as the building of publication works
is concerned, and an outlet to the ocean.
Why do we want to put dead capital into
the ground for population of 200 900
when we have probably not more than a
present population of 10000?
The work that l have outlined for
treating stations is ample for a popula-
tion of 100, 900, and there is a great likeli-
hood that the ocean outlet sewer would
be sufficient for 100000. Suppose, by
growth, in fifteen years we have used up
the capacity of the ocean n-outlst and
treating stations 1 outline, what hinders
the enlargement If the precipitation
works and ocean outlet by adding fsw
more treating basins, and laying another
duplicate concrete pipe alongside of the
one proposed.
Capital at s per cent, compounded,
will double itself in nine years, 90 that
all the surplus plant put into the ground
at the end of nine years will have eaten
ltself up before any commercial value or
use can be realized from it.
Now let US take portions Of the
ENGINEERS REPORT
Made to the City Council, and see what
that is made of. and how it fits our needs.
Passing over lot of unimp portant matter
in the report, we arrive at q point where
its language deals in general details that
~ n, ha oopoiIorod oouc.
"The estimates of cost hereinafter pre-
sented are based upon the requirements
of frst-class work throughout, and upon
the demands for a population of 200, ,O0O
people and daily amount of sewage
equal to 2O,ooO,O0 gallons, with maxi.
mum flow at the rate of 10000, 900 gal
lons."
When will Los Angeles be a city of
200, 900? Certainly not sooner than nine
years, and even if then it will be phe.
nomenal growth, unprecedented and not
at all likely. More probably in nine
years we may have population of 10O,-
600. Therefore, what sense is there in
spending great sums of money for sup.
posititious and unlikely growth? Where
is the 20 900, 900 gallons coming from to
supply the city with water, to say moth
ing of the maximum flow of 10000, 900
gallons?
The whole surface flow of the Los An.
geles river in the dry season, as near as
l can judge by gauging of that stream.
only amounts to about 13 ,000, 900 gallons
In twenty-four hours, and even if the
water supply amounted to 10000, 900
gallons, what proportion of it will 6nd
| it's way into the new sewer system? 1t
is entirely safe to say it will not, under
any safe contingency, amount to over 33
per cent, the larger amount going on
grass lawns, flowers, sprinkling streets
and multitude5 of other surface usss.
The total amount of water furnished this
city is about as follows, estimated from
the dryest time last summer for twenty
four hours:
Los Angeles City Water Company 1000, 900
East Side works. ....................... 200 600
Total gallons ......................4,9 100000
This, for population of say 10000, is
20 gallons per capita per day, and SO per
| cent. for sewage uses, would be about
l 500 900 gallons that would find its way
into sewers.
We are told large amounts of
| UNDER DRAINAGE
Will have to be provided for, but accord
| ing to the report we can allow the so per
cent. cited as the amount of under
drainage into the new works, and even
then would only have in sewage output
3 100000 gallons in twenty-four hours,
while the inexpensive sea outlet l have
outlined has daily capacity of IA 900, 900
gallons. | again quote the engineers
report:
"The cast-iron outfall into the ocean 10
to cost 100000, and $40 900 were as-
sumed to cover the expenses for the pur-
chase of right of way and the necessary
| frontage. The outfall should extend
about 1000 feet from the shore into 80
| feet of water, and consist of two pipes,
each SO inches in diameter. For the
present it would be necessary to lay only
one 3-foot pipe. A greater diameter
| would cause an insufficient velocity and
deposits"
Now here is an admission that one
3-foot pipe is deemed sufficient to carry
all the sewage, and we are told the out
fall sewer must be 4 by 511a feet in eize,
and to cost with it's expensive appur-
tenances 1896, ,775, as against the ocean
outlet proposed, $175 1000.
The main drainage works of the city
can be and should be entirely con-
structed of vitrifed and concrete pipes
from to "a inches internal diameter
and when more than one "a inch pipe is
needed by reason of larger main drain
age, duplicate them or lay on parallel
| streets. think the mains and trunks as
planned are considerably larger than
needed.
WHAT MEMPHIS HAS DONE
Memphis, Tenn, contains population
of about 35 900. The main outlet sewer
is one foot eight inches in internal di.
ameter, and is based on fow of sewage
of forty gallons per head per day. All
| the other sewers are of vitrifed pipes
| from to Is inches in diameter.
There are over 20 miles of these sew
ers, and 125 hush-tanks, each automatic
hush.ank holding 125 gallons. The to-
tai cost, including expenditure of all
kinds, has been $l37 600, or $6S7 per
mile, while the original estimate for the
same town was from $500, 900 to So, ,225,-
600 by other methods. The msin and
outlet sewers have an inclination of from
l in 400 feet to in 900 feet. No obstruc-
ton has ever taken place in the s, 10, IL,
Is or 20.inch mains. At the same ratio
for our opulation-double that of Mem
phis-ssy 70, 900, the relative cost for Los
Angeles would be 1914, 600, at the same
ratio of cost, for 20 miles Observers for
the city proper.
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