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v <br /> • <br /> TABLE I <br /> LEAD CONCENTRATION IN CONFIRMATION SAMPLES FROM <br /> SOIL EXCAVATION AREAS NORTH OF RAILROAD TRACKS <br /> Sample Total Soluble <br /> Excavation Sample Depth Sample Lead' Lead' <br /> Area Location' (feet) Date (mg/kg) (mg/L) <br /> Notch Wall 0- 1 293 NA <br /> East Wall 0- 1 161 NA <br /> South Wall 0- 1 227 NA <br /> A 07/17/95 <br /> West Wall 0- 1 147 NA <br /> Floor 1 224 NA <br /> Walls and Floor 0- 1 NA 0.045 <br /> North Wall 0- 1 223 NA <br /> East Wall 0- 1 293 NA <br /> South Wall 0- 1 142 NA <br /> B 07/17/95 <br /> West Wall 0- 1 187 NA <br /> Floor 1 325 NA <br /> Walls and Floor — NA <0.005 <br /> North Wall 0 - 1 608 NA <br /> East Wall 0- 1 212 NA <br /> South Wall 0- 1 275 NA <br /> C 07/17/95 <br /> West Wall 0- 1 178 NA <br /> Floor 1 199 NA <br /> Walls and Floor — NA <0.005 <br /> North Wall 0- 1 52.5 NA <br /> East Wall 0- 1 59.0 NA <br /> South Wall 0- 1 150 NA <br /> D 07/17/95 <br /> West Wall 0- 1 215 NA <br /> Floor 1 60.9 NA <br /> Walls and Floor — NA <0.005 <br /> a All samples composited in field. Wall samples c Cleanup level for soluble lead in soil is 0.015 mg/L. <br /> composited from three locations equally spaced along <br /> length of wall and at mid depth. Floor samples mg/kg Milligrams per kilogram <br /> composited from five locations equally spaced over <br /> floor area. Samples for soluble lead analysis(walls mg/L Milligrams per liter <br /> and floors)composited from all four walls and the <br /> floor—one-fifth of composite sample from each. NA Not analyzed <br /> b Cleanup level for total lead in soil is 220 mg/kg. <br /> 469-015.ltr/11-09-95/u/kwrigh/keydata/oldtracy/letters <br />