|
 
 An engineering geologist and
geophysicist with more than 25 years of engineering and environmental consulting
experience, Bill has been responsible for numerous geophysical investigations.
A member of the Society of Exploration Geophysicists since 1967, and the former
Chief Geophysicist at IT Corporation, he has specialized in shallow geophysical
exploration as part of engineering and environmental projects throughout his
career. Typical projects include archaeological investigations, detecting
buried tanks, mapping ground water contaminant plumes, or defining the dynamic
properties of a building foundation. His experience extends to major research
projects, where he has been the Principal Investigator in developing the high
resolution seismic reflection technique, 3D Ground Penetrating Radar, and
applying geophysics to coal exploration. His geophysical experience also
includes mineral exploration, where he conducted gravity, magnetic, DC
resistivity, IP, SP, and EM techniques to map ore deposits. Bill is
currently a principal at D'Appolonia Environmental Services, Inc.
Recent projects include:
 |
Geophysical survey for an archaeological site in Barboursville,
WV. The work involved application of magnetic gradiometry, soil resistence
measurements, GPR and EM measurements. The GPR work included 3D modeling. |
|
Geophysical survey to map historical graves and Revolutionary War structures
at the Hill Historical Cemetery in Baden, Pennsylvania. |
|
Geophysical survey to delineate individual graves and at the Johnson’s Island
Confederate Stockade Cemetery, Sandusky Bay, Lake Erie, Ohio. Based on an
interpretation of GPR profiling, a map of graves was prepared which showed
that the gravestones had little relationship to the graves and that there were
many more graves than represented by the headstones. This solved a “mystery”
as to the whereabouts of many Civil War Confederate officers. |
|
Site characterization and mitigation of an
early 19th century log house in Monroeville, Pennsylvania, with the
mitigation involving the relocation and reconstruction of the structure as the
McCully House Museum for the Monroeville Historical Society. Mr. Johnson was
designated an “Outstanding Citizen of 1995” by the Pittsburgh Post-Gazette for
this effort. |
|
