Page 177 - 1915, Springs of CA.

CARBONATED SPRINGS. 161
NAPA BOCK SODA SPRINGS (NAPA 9).

Napa Rock Soda Springs, known also as Priest Soda Springs, issue
on the hillside that borders a small valley about 6 miles in a direct line
south of Samuel Soda Springs. A spring that has a temperature of
79° and a discharge of about 15 gallons a minute here rises in a rock-
walled basin 7 feet in diameter. Much gas rises with the water, which
is moderately carbonated and also tastes distinctly of magnesium.
The overflow channel is lined with iron-stained cemented gravel. In
1910 a smaller spring 40 yards southward was covered with boards,
and a pipe line extended from it down the slope to a small bottling
house. The following analysis shows that the water is secondary
alkaline in character, magnesium being present in relatively large
proportion.

Analysis of water from main spring, Napa Rock Soda Springs, Napa County, Cal.
[Analyst, W. B. Rising. Authority, advertising matter. Constituents are in parts per million.]
Properties of reaction:
17
0
0
6
77
( )
By
Constituents. weight. Reacting
values.
Sodium (Na).. . ..................................................................... 736 32.00
401 1Q Qft
1,069 87.87
«9.5 1 06
Sulphate (S04)...................................................................... 633 -19 1Q
Chloride (Cl)........................................................................ 398 11.22
3,464 115. 45
6,710.5
Carbon dioxide (CO2) ...............................................................
a Reported 95; probably a typographical error.
PHILLIPS SODA SPRINGS (NAPA 8).
About 350 yards north of Napa Rock Soda Springs and 100 feet
higher up the slope are two carbonated springs that are known as
Phillips Soda Springs. The principal spring rises in an oval, stone-
walled basin about 4 by 10 feet across; the other forms a pool in the
soil, 25 yards away. In 1910 an old bathhouse, a residence, and two
other buildings stood near the springs, but the property had evidently
been deserted for a number of years. The waters are carbonated and
are apparently similar in character to those of the Napa Rock Springs,
but they have formed a large deposit in which the cementing material
is a carbonate of magnesia instead of the much more common car-
bonate of lime.
35657° WSP 338 15 11