The site had a replaceable deep
anode system installed in 1977. The replaceable design was composed
of a deep system with a full length non-metallic casing. The
replaceable design has been used for deep anode installations
The 1977 installation used a 4 in. casing size within an 8 in.
bore hole. The anode was located in the active area between 185
to 235 ft. The active area has a non-metallic, perforated casing
which allows current transfer. Solid non-metallic casing was
extended to the earth's surface. Go to Replaceable
Deep Anode to see a typical drawing.
The original system contained graphite anodes. In 1984, the
graphite was replaced with 50 ft. of 4mm Pt (1 micron) -Ti-Cu
anode on a single lead wire.
In 2000 the Pt-Ti-Cu anode failed.
The following gallery of pictures shows the anode replacement
on June 20, 2000. Replacement is made possible as the non-metallic
casing maintains hole integrity. The replacement is shown with
step-by-step descriptions and actual time references.