Table T6. GRA calibration procedures.
Leg
Calibration standard
Calibration procedure
101–164 80 cm tapered aluminum rod in liner. Run aluminum rod until density values of 2.7 and 1.0 were measured.
164–169 (Site 1036) 80 cm tapered aluminum rod in liner. Calibration file created.
169 (Site 1037)–210 Telescoping aluminum rod, 6.6–0 cm diameter, in liner filled with distilled water. Two-phase standard incorporates correct water density into calibration parameters.