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How to run a survey.
Evidence of hydrocarbon microseepage includes chemical, geobotanical, and mineralogical anomalies, as well as magnetic, radiation, or related geophysical anomalies. Surface geochemistry is a valuable extension to any exploration project when applied properly. Staging the exploration program so that samples are acquired judiciously is the most often prescribed survey practice. This minimizes cost while maximizes cost while maximizing sample placement. However, due to the noisy nature of geochemical data, staging sample collection can present some problems. Multiple reconnaissance surveys are acceptable to ascess the presence of an anomaly, but prior to drilling a detailed survey of closely spaced samples should be run in addition to reoccupying the reconnaissance sample locations.
Many of the geochemical methods currently in use can yeild spurious anomalies. False anomalies can be detected if 1) the sample spacing is sufficiently close to determine the discontinuous nature of an anomaly, 2) a sufficient number of samples are taken to obtain an adequate population to differentiate an anomaly from background, 3) the method used meets or exceeds an expected signal to background ratio.
Instructions for Soil Sampling >> and more...
  • Locate your position on a map
  • Clear loose soil away from sample location
  • Dig down until soil is consolidated. This is usually 2 to 6 inches.
  • Acquire soil sample
  • Repeat two more times within a 6 foot (2 meters) area so that the sample is an aggregate of the sample location.
  • You should have approximately 1/3 of a ziploc bag of soil. Two to Three cups of sample is adequate for sample preparation.
Procedure for shipping soil samples from outside the United States.
USDA-APHIS-PPQ Soil Circular on how to import foreign soil.