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Table 4 DRAFT <br /> Well Construction Data <br /> for Selected Wells Located in the Study Area <br /> Lincoln Center, Stockton, California <br /> Estimated Top-of-Casing Depth of Screened Filter Pack Seal <br /> Date Drilling Subcontractor/ Screened r Boring Diameter Elevations Casing Screen Diameter Boring Interval Interval Interval <br /> Well ID Installed Consultant Geologic Unit (inches) (feet MSL) Material (inches) (feet bgs) (feet bgs) (feet bgs) (feet bgs) <br /> Notes: <br /> (A) Abandoned <br /> —Data not available <br /> 1 Interpretation based on comparison to data collected from the Site(LFR 1996a) <br /> Z LVMD-4 records indicate that two wells are designated as LVMD-4. The well construction data and abandonment procedures for the original LVMD-4 are unavailable. <br /> Well construction data contained in this table are for the replacement well, installed in 1980 and abandoned in 1992. <br /> No screen or perforated casing, open hole 180'-205' <br /> "Chevron and Exxon monitoring well identifiers have been modified to include"CH"and "EX," respectively,to differentiate these wells from existing Site monitoring wells. <br /> LVMD,COS,and CWS well construction information based on Water Well Forms and Water Well Drillers Reports. <br /> Chevron monitoring well construction information based on Sierra Environmental Consultants, 1987, 1990, 1992, 1993. <br /> Exxon monitoring well construction information based on Western Geo-Engineers, Inc. (1989)and well permits obtained from San Joaquin County, <br /> Public Health Services Environmental Health Division. <br /> Abbreviations: <br /> bgs-below ground surface <br /> GTI-Groundwater Technology, Inc. • <br /> KJC- Kennedy Jenks Chilton, Inc. <br /> LFR- Levine-Fricke-Recon, Inc. <br /> LH - Leedshill-Herkenhoff, Inc. <br /> MSL-mean sea level <br /> PVC-polyvinyl chloride <br /> Sierra-Sierra Environmental Consultants <br /> WEGE-Western Geo-Engineers, Inc. <br /> 3966MWALS/Sheet1 4 of 4 3/13/97 <br />