Laserfiche WebLink
r <br /> EXPLANATION OF ABBREVIATIONS <br /> "Classification" Symbols representing soil classification from interpretation of field togs <br /> and field tests according to the Unified Soil Classification System <br /> "Sample Symbol" LRS - large ring sampler A sampler having an 18 inch long, 2 5 inch <br /> inner diameter split barrel that contains the brass sleeves for collecting <br /> soil samples. <br /> "Blows/Ft " The number of blows of a 140 pound hammer falling 30 inches required <br /> to drive an 18 inch sampler the final 12 inches <br /> "Field Measurement" Concentrations of gasoline constituents detected in the field from <br /> samples collected during drilling operations using an OVM Model 580E <br /> photoionization detector (PID). The PID is capable of detecting <br /> concentrations as low as 0 1 parts per million <br />