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correspond with the hydrostatic head of the groundwater above the top of the <br /> AS well screen Infection pressures will be incrementally increased past the <br /> breakout pressure while corresponding flow rates are recorded Data will be <br /> entered on a rectilinear plot of flow rate vs pressure As pressure is <br /> increased, a point is reached at which the relationship between flow and <br /> pressure is no longer linear This point represents the transition from laminar <br /> to turbulent flow and also represents a point of diminishing returns Beyond <br /> this point, even significant increases in pressure tend to yield only minor <br /> increases in flow <br /> Once the optimum sparging flow rate is established, the pilot test will be <br /> continued at that rate while soil gas pressures and dissolved oxygen <br /> concentrations are monitored at well points located at known distances from <br /> the AS well After conditions have stabilized, equilibrium pressures and <br /> dissolved oxygen concentrations will be recorded and used to estimate the <br /> sparging radius of influence Sparging radius of influence is usually <br /> interpolated from a semi-log plot of change in dissolved oxygen <br /> concentrations vs distance from the sparging well <br /> One additional vapor sample will be collected at the conclusion of the <br /> combined AS/SVE pilot testing activities and laboratory-analyzed for BTEX <br /> and TPH by USEPA Method TO14 <br /> r <br /> 12 <br /> Pilot Testing Work Plan <br /> 1717 South Center Street-Stockton,California <br /> Prepared by Philip Services Corp <br /> 11\ENW24001321121382EG\Projom\StockCrn[1pifort atpim doc July 23,2002 <br />