Lake Chaplain site is located about 9 km north of Sultan, Washington. The
City of Everett provided permission to install a continously operating site
at the City Water Filtration Plant at the Lake Chaplain Dam.
With help from SCIGN and UNAVCO, we installed a smaller, hand-drilled geodetic
monument, known as the short drilled-braced geodetic monument. The monument
design is perfect for rapid installations of continuous GPS sites. Data collection started
on March 15, 2001.
It consists of 1-inch diameter stainless-steel rods forming a quad-pol that stands about 3
feet above the ground surface and is anchored 3 to 6 feet into bedrock. A generator-
powered handhelp rotary drill using a 1.5-inch diameter drill bit is used to prepare
the holes. Epoxy is used to anchor the stainless-steel rod in the holes.
John Galetzka and Wayne Shiver unpacking equipment at the Lake Chaplain site.
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John Galetzka is welding the stainless-steel pipe.
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Mike Jackson checking the north orientation of the antenna adapter.
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Mike Jackson and Wayne Shiver are installing the copper
ground rod next to the utility boxes.
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Close up view into the utility box, with Trimble 2000ssi reciever and
eight solar gelcell batteries.
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Short drilled-braced monument. View to the north.
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Lake Chaplain solar panels and GPS antenna. View towards the north.
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Up close and personal: Trimble choke-ring antenna serial number.
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