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CLEARWATER <br /> G R O U P, I N C <br /> ' * At an applied pressure of 12 psi, induced pressure ranged from 11 inches (15 feet <br /> away) to 015 (63 feet away) <br /> • An air sample was collected from VW-1 within 11 minutes of the completion of <br /> the 12 psi step-test, laboratory analyses indicate that the sample contained <br /> 2,100 ppm TPHg (6,300 milligrams per cubic meter) <br /> SW-2 (applied pressures of 9 and 12 psi) <br /> With an applied pressure of 9 psi in SW-2 for approximately 60 minutes, induced <br /> pressures ranged from 10 inches in a well 9 feet away to 0 2 inches in a well 48 <br /> feet away <br /> ' a A pressure of 12 psi was applied to SW-2 for approxm <br /> lately 75 minutes, induced <br /> pressures ranged from 19 psi in a well 9 feet away to psi in a well 48 feet away <br /> A • An air sample was collected from VW-2 within10 minutes of the completion of <br /> the 12 psi step-test; laboratory analyses indicate that the sample contained 570 <br /> ppm (1,700 milligrams per cubic meter) TPHg <br /> • Although measurements were not made m MW-1 and MW-2 because of <br /> occluded screens, field personnel noted that air was bubbling in both wells <br /> during the last step test of SW-1 and SW-2 (at 12 psi applied pressure) <br /> A comparison of water level measurements taken before and after the sparge <br /> ' I tests indicate that water levels rose from 016 feet to 2 95 feet as a result of the test, <br /> l <br /> in general, wells closest to SW-2 had the highest increases in water levels <br /> • Measurements of dissolved oxygen in groundwater, made before and after the <br /> sparge test, were compared; the data did not appear to indicate consistent <br /> ' increases in the dissolved oxygen content as a result of the sparge test The <br /> dissolved oxygen data has therefore bee <br /> * 'Air samples ,collected before and after the sparge test were screened for <br /> hydrocarbons ,using'aria LEL meter and' a PID,,61 nly the air samples collected froim <br /> ' VW-1 and VW-2�showed'a clear increase irn�hydrocarbon concentrations after the l <br /> Iv I <br /> ' I sparge test Data�from loth'er wells'were inconclusive. <br /> 'll <br /> j, : <br /> ✓ I i I lid t I I ��I i t I (( ��� l i ,I,I I p I I i� Ili li I I !°� I I 'I 4 � � I , l I i �� _ <br /> l I D101 PAR/3Q/PILOT 13 pp , <br /> E � ! <br /> 110 <br /> II ,I�ff I�III 1IIEI�I�I`�`if l�I'I <br /> Ih,=II <br /> 1��I <br />