ASCE 1193, The 4th article from the June, 1911, Volume LXXII, Transactions of the American Society of Civil Engineers. Paper No. 1193, Feb. 1, 1911

Analyses of Estanzuela and San Geronimo Waters.

Reading edition

Table 8 shows analyses of the Estanzuela and San Geronimo waters, made in February, 1910, by Messrs. Ledoux, of New York City. The Estanzuela sample was taken at the valve-house of the South Reservoir, while that of San Geronimo was taken in Shaft No. 1 of the infiltration gallery when flowing at the rate of about 450 liters per sec. Both waters are absolutely free from turbidity.

TABLE 8.—Analyses of Estanzuela and San Geronimo Waters. In Parts per Million.

Estanzuela.San Geronimo Infiltration Gallery.

Total solid matter in solution209.00305.00

Organic and volatile matterNot weighable.Not weighable.

Analysis of Solids:

Silica10.512.0

Iron and AluminaTraces.Traces.

Lime85.4112.6

Magnesia3.822.6

Soda (Na₂O)13.320.2

Potash (K₂O)2.01.9

Sulphuric Acid24.411.5

Chlorine2.02.8

Probable Combination of Bases & Acid Radicals in the Solids:

Silica10.512.0

Iron and AluminaTraces.Traces.

Sodium Chloride3.34.6

Potassium Sulphate3.73.5

Sodium Sulphate26.340.8

Calcium Sulphate13.322.1

Calcium Carbonate142.7184.8

Magnesium Carbonate8.449.8

————

208.2317.6

Nitrogen as Free Ammonia0.0040.032

Nitrogen as Albuminoid Ammonia0.0060.022

Nitrogen as Nitrites (N₂O₃)0.0020.002

Nitrogen as Nitrates (N₂O₃)0.1001.85

Total Hardness (as CaCO₃)155.0220.0

Alkalinity (as CaCO₃)121.0180.0