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TP-25 <br /> Unified Soil <br /> Classification <br /> Depth System <br /> (ft) Symbol Description (Approximate Elevation 99.5 Ft PD) <br /> 0.0-0.7 -- Very dark brown to black, sandy, organic soil with fine wood chips. <br /> 0.7-1.2 SM Gray,silty,fine SAND with gravel and gray angular rock to 6 inches. <br /> 1.2-1.6 SM Dark gray, silty,fine SAND with wood chips. <br /> 1.6-2.3 -- Dark brown, wood chips and organic soil. <br /> 2.3-4.7 SM/SP Dark gray, silty,fine SAND grading to clean fine to medium sand. <br /> No geotextile fabric observed. <br /> Backhoe operator indicated he detected slight fuel odor; Landau Associates'staff <br /> only observed organic odor. <br /> Test pit completed to 4.7 ft on 7/11/94. <br /> Groundwater seepage encountered at 4.0 ft. <br /> a <br /> c <br /> .a <br /> a <br /> 13 <br /> 3 <br /> 9 <br /> Note: Stratigrephic contacts are based on field interpretations and are approximate. Refer to the text for an explanation of subsurface condition. <br /> Refer to Soil Ciassirkation System figure for additional Information on symbols and termindogy. <br /> ZI <br /> Log of Test Pits Figure A-21 <br />