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TABLE 1GROUNDWATER ELEVATIONS AND FREE PRODUCT LEVELSFORMER PILKINGTON NORTH AMERICA – LATHROP FACILITY 500 East Louise Avenue, Lathrop, California(feet)Free Product Thickness (Feet)Depth of Free ProductDepth to Groundwater (btoc)Groundwater Elevation (NAVD88)Well Designation (Screen Interval ft bsg)Well Casing Elevation (NAVD88)1DateDirection and Gradient (ft/ft)03-26-201613.26---07-27-201612.90---08-05-201615.2013.202.00-10-10-201617.15---03-10-201711.2510.940.31-04-06-201710.4510.400.05-11-09-201711.6711.430.24-12-04-201711.5811.560.02-01-04-201812.83No Product--03-28-201811.20No Product--05-01-201811.2411.180.06-05-07-201811.4711.440.03-06-05-201815.10No Product--07-20-201811.72No Product--11-09-201812.41No Product--Notes:ft: feetNAVD88: North American Vertical Datum 88ft/ft: feet per feetbsg: below surface gradebtoc: below top of casingRW-8 (8 - 18)Survey of wells completed by Condor and via coordinate datuem NAD83(1986) and vertical datum NAVD88 from GPS observations.