This webinar will present a general overview of several geophysical methods which are commonly used at environmental waste sites. The primary focus will be keyed to practical applications of each method. Geophysical tools will be presented in a manner so that the participant will be able to identify each tool by its physical appearance, what properties are measured, how information is collected and processed, method detection limits, how to select most effective method, methods that complement each other, and situations where some methods will not work. Also presented are details on how to plan or manage a geophysical survey which include gathering information to properly customize a survey to detect alleged targets. A brief introduction will also be given for a few basic borehole geophysical tools specifically for shallow two-inch diameter monitoring wells to optimize information gathering during well construction and for long term monitoring. Examples of surface and borehole information will conclude the webinar. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/NARPMPresents45_110818/