The record-union., 1894-02-13
TO IMPROVE THE PRESENT SYSTEM.
Recommendations of the City Sewer
age Committee.
Full Text of the Report Submitted by
Them TO the City Trustees
Last Night.

At last nights session of the City
Trustees Messrs. Pennish Leonard and
Bragg, comprising the Committee on
Sewerage, submitted the following re-
report
To the Honorable. the Board Of Trustees
-GENTLEMEN: We, the undersigned a
committee chosen from your honorable
body to examine into the question of
sewerage and drainage, herein submit our
report
From data in the possession of the City
Surveyor, obtained within the past two
years, we find that the city of Sacramento
has, contrary to current belief, sewer
system in fairly good cOndition that said
system is, with comparatively few mod
itications, capable of carrying and dis
charging all OF the city sewage and the
greater portion OF the rainfall. But in ad-
dition TO the system as it now exists is re-
quired an outlet or main sewer to receive
the drainage and carry It to point where
it may be conveniently pumped into the
river.
We propose that main brick sewer be
constructed along II street, extending
from Seventeenth street to the Sacra
mento River, of circular form, varying
from four to six feet in diameter, with sui-
hcient grade to give good velocity of flow
and not deposit solids or sediment, the
minimum velocity being not less than
two feet per second; this for flow of sew
age in dry weather.
The main will be constructed low
enough to drain all Of that portion of the
city north and east as we'll as south not
now drained. 1t will allow an increased
fall for all sewers extending north in the
populOus part OF the city, eQuaiing from
five 10 eight feet, and will permit of the
lower portion of these sewers being en-
larged, making free outlet. Said main
may be extended to Thirty-tirst street
should future development Of the city
require, and will thoroughly drain that
area.
This main will have sufficient capacity
TO carry OFT all surface Hood waters that
would ordinarily fall, and in case OF ex-
traOrdinary rainfall will carry more than
is practical to provide pumping capacity
for. An extremely heavy precipitation
of water would not all find its way to the
sewers, but great amount would seek
the low ground south and west OF Ninth
and streets, which would, as it has for
years past, act as a reservoir, until the
water would finally drain through proper
openings to the main discharge. Should
it be required to extend sewers with lat
erals south of Il street, the fall will be
ample.
The amount of pure sewage, devoid of
surface and Subsoil water now discharg
ing from mains Is estimated at Z,oOU.0OO
gallons daily, IAN outside figure, and equals
nearly 100000 gallons per hour; the ca
pacity OF the main is over 3,000.0 900 gall
Ions per hour; the amount of sewage
then is only about one-third of its great
est capacity.
We recommend the construction of
circular brick sewer in Ninth street, five
feet in diameter, from the oval sewer
ending at the alley X and L. to r street,
to take the place of the eighteen-inch pipe
into which the five-foot oval sewer dis
charges. 1t should be placed about five
feet lower than the present sewer and
have fall Of about eight inches per
block. This sewer may be used to re-
lieve the sewers running parallel on
either side. if found that such sewers are
overcharged. by tapping them at proper
points.