Descriptions of the location types.

This table describes the location types to be sampled, their matrix, and whether the locations are existing or new. The fields GWD_Required, LTD_Required, and FLD_Tests_Required contain Boolean values that indicate whether these measurements and/or analyses are required by the field sampling plan associated with the sampling event in focus. Justification fields are present for each to identify waivers applicable to the standard practices present within the field sampling plan.