REPORT OF INVESTIGATIONS No. 40


the use of cooling towers, reclaiming steam condensate, and repairing
leaks reduced this pumpage even though nylon production increased.
The average pumpage in January 1962 was 6.3 mgd.
 Six wells are used almost full time and three wells are on a standby
basis. The three standby wells are pumped at about 500 gpm because
higher rates cause an increase in the chloride content. One well has
been abandoned because of salt-water encroachment. The wells at the
Chemstrand plant range in depth from 312 to 384 feet and are usually
equipped with two well screens.
 The Escambia Chemical Corporation near Pace pumps an average of
2.9 mgd from four wells. The wells are from 260 to 300 feet deep and
were drilled in 1955, 1956, and 1962. The Columbia National Corpora-
tion is also near Pace and just west of the Escambia Chemical Corpora-
tion. Columbia National has one well, 293 feet deep, which is pumped
at approximately 1 mgd.
 The American Cyanamid Company has two large-capacity wells,
each capable of pumping more than 1,100 gpm. They also have a smaller
well with a pumping rate of 150 gpm. The three wells were drilled in
1957 and are 278 to 288 feet deep. The present plant use is 1.9 mgd and
the water pumped from the two large wells is metered.
 The Newport Industries plant at Pensacola has been in operation
since 1916. Thirteen wells have been drilled between 1915 and 1954.
Seven of these wells have been abandoned due to salt-water encroach-
ment. The chloride content of water from four of the other wells has
shown a gradual increase. The increase in the salt content is very slow
and the water from a well may still be used for several years after the
salt content starts to increase. The chloride content of the water from
two of the wells has not increased. These two wells are farther away
from Pensacola Bay than the other wells.
 Newport Industries is presently using five large-capacity wells which
are pumped intermittently. They also use one small-capacity well. The
wells range in depth from 209 to 251 feet. The current use of ground
water is 3.6 mgd. Several cooling towers have reduced the ground-water
pumpage.
 Use by municipalities.-The second largest use of ground water in
both counties is for public supply. Seventeen million gallons are used
daily for this purpose. About 16 mgd is withdrawn in the greater Pensa-
cola area.
 The City of Pensacola sold ground water at an average rate of 11.4
mgd during 1962 for 75,000 people. This is about 150 gallons of water per
person per day. The water is furnished from ten wells that can be