Seattle City Light Gorge
2nd Tunnel
PGS INC was contracted to cunduct a
survey of the entire lenght of the
penstock tunnel from the Gorge Dam to
the Gorge Power House with high
definition scanning at the proposed tie
in points for the 2nd tunnel. In addition
to the tunnel mapping PGS also
surveyed proposed stock pile location
sites, proposed new roadways and a
steep cliff above the proposed 2nd
tunnel exit.

Newcastle storm water
GIS
PGS INC was contracted by the city of
Newcastle to update thier GIS storm
water drainage base map using as-built
plans and field verification.