Evening star. [volume] (Washington, D.C.) 1854-1972, 1901-05-22

is concerned would consist Of a single
pumping station at the north end of the
new reservoir, supplying water both for
the filter beds and for the distributing
larry station in the vicinity of ~ and
Trumbull streets, to be used only in the
remote contingency of accident to the tun-
mel connecting the two reservoirs.
Intention of Congress-.
Judging from past legislation it has ap-
parently been the Intention Of Congress to
intrust the construction and operation of
filter beds to the direct control of the
officer in charge Of the Washington aque-
duct The Commissioners of the District
of Columbia have entire control of the
pumping plant furnishing water for the
higher areas of the District, and the ex-
penditures relating thereto are paid from
the water fund Of the District Of Column
bia. while in the case of the Washington
aqueduct they are paid one-half by the
United States and one-half from the rev.
enues of the District of Columbia.
AS the successful operation Of the filters
depends largely upon the rate at which
water is furnished to the filters by the
pumps it would not appear expedient to
place the control Of these pumps and the
filter beds under different jurisdictions.
Still less would 1t appear expedient to pro-
vide one pumping plant subject to two in
dependent Jurisdictions.
Owing to conditions prevailing. the es-
Enlistment of separate pumping plants at
site would be more expensive than at
site 3. and when the cost of operation OF
separate plants at site is considered
their establishment at this site is deemed
impractfcable from an economic stand
point.
In reaching it's decision the board has
kept in mind the fact that at the present
rate of consumption the capacity of the
aqueduct, 76.OOO,O 600 gallons per day will be
reached before very many years. and that
arrangements must then be made for an
increased supply, but as the furnishing of
this additional supply involves the con-
Structton of second conduit with its
necessary adjuncts. it is believed that pro-
vision for fitering this supply can best be
made in connection with the construction
of this conduit and its accessories.
In considering the subject of location the
board has only estimated for a plant oper-
ated under the slow sand filtration method.
In case a method Of filtration combining
the slow sand and coagulation were adopt
ed, provision should be made for coag-
ulatfng basin. In case of the selection ct
either site. north or east of the new reser-
Vofr, the most economical and practical
method Of providing for coagulation would
be to utilize part Of the new reservoir.
This would be equally available for either
site and the cost would be the same.
The board having carefully considered all
of the questions involved has the honor
to recommend that the filter beds be locat-
ed on site B. to the east of the new reser-
voir, and that squares 20, Fl. % and 30 i'll
Edmonston and Stellwagen's addition to
lie Droit Park, and squares 10, IA, 10. Is
and 80 Of Dobbins' addition, be secured for
this purpose.
Respectfully submitted:
A. NJ. MILLER
Lieutenant Colonel, Corps of Engineers.
LANSING H. BEACH,
Captain. Corps of Engineers.
D. D. GAILLARD,
Captain, Corps of Engineers.
G.. NJ. HOFFMAN,
First Lieutenant, Corps Of Engineers,
Recorder.