Numbers and Titles



Includesgeophysical investigations and monitoring conducted by the contractor before construction begins as a project activity.
See00 31 31 for geophysical data provided to the bidders, proposers, or contractors before construction begins. 13 48 00 for seismic control. 13 52 00 for seismic instrumentation. 26 35 23 for electromagnetic-interference filters. 40 91 16 for electromagnetic process measurement devices. 40 91 16 for magnetic field process measurement devices.
02 31 13Seismic Investigations
02 31 16Gravity Investigations
02 31 19Magnetic Investigations
02 31 23Electromagnetic Investigations
02 31 26Electrical Resistivity Investigations
02 31 29Magnetotelluric Investigations