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h� KLEINFELDER <br /> 4 FIELD ACTIVITIES <br /> The field activities described in this report consisted of soil sample collection from the two <br /> shallow excavations, soil sample collection for three borings, the installation of three <br /> tmonitoring wells for the collection of ground water samples, and a survey of the monitoring <br /> well heads <br /> ' 41 SOIL SAMPLE COLLECTION, TANK EXCAVATIONS A& B <br /> Four soil samples were collected from two shallow excavations created when the <br /> underground storage tanks were removed. The location of the soil samples are shown on <br /> ' Plate 3, in Appendix B. The soil samples were collected from opposite sides in each <br /> excavation, approximately 4 to 4 5 feet below the surface grade. <br /> t in brass tubes using hand collection tools. The brass tubes <br /> Soil samples were collected b g <br /> were sealed with aluminum foil and tight fitting caps, labeled, and placed in an iced cooler <br /> At the end of the drilling operations, these soil samples were delivered under chain-of- <br /> custody to a state certified laboratory Copes of the chain-of-custody documents are <br /> included in Appendix C. <br /> ' 4.2 SOIL BORINGS <br /> ' Three soil bonngs were drilled to a depth of approximately 25 feet below ground surface <br /> on September 14 and 15, 1988 to collect soil samples and to install three monitoring wells <br /> ' Six soil samples, two from each boring, were collected above the first encountered ground <br /> water during drilling First encountered ground water was approximately 5 feet below <br /> ' ground surface. Soil samples were also collected for lithologic control at 5 foot intervals <br /> beginning at approximately 10 feet below ground surface. Ground water monitoring wells <br /> were installed in the three soil bonngs after drilling was terminated at a depth of 25 feet <br /> Procedures for collecting soil bonngs are contained in Appendix D. <br /> ' During the sample collection an experienced environmental geologist classified the <br /> subsurface sods and logged the boreholes Descriptions of the soil encountered in each soil <br /> boring, and identification of the sample depth and soil type are presented on the Log of <br /> ' 145-88-2013 4 <br />