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1 <br /> FIGURE 5 <br /> Monitoring Bell Sampling Protocol Schematic <br /> Sampling Crew Reviews Project <br /> Sampling Requirements/Schedule <br /> 1 <br /> Field Decontamination and <br /> Instrumentation Caeibration <br /> I <br /> Check Integrity of Well <br /> (Inspect for well Damage) <br /> Measure and Record Depth to Water <br /> and Total Well Depth <br /> (Electric Well Sounder) <br /> Check for Floating Product <br /> (Oil/Water Interface Probe) <br /> Floating Product Present Floating Product Not Present <br /> Confirm Product Thickness Purge Volume Calculation <br /> (Acrylic or PVC Batter) V =?r(r/T2) h(_% vol)(7 48)=_/9allons <br /> 1 <br /> Collect Free-Product Sample V = Purge volume (gallons) <br />. I r- 3.14154 <br /> Dissolved Product Sample Not h = Height of Water Colum (feet) <br /> Required r x Borehole radius (inches) <br /> I <br /> Record Data on Field Data Form Evacuate water from well equal to the calculated purge volume wnile <br /> monitoring groundwater stabilization indicator parameters (ph, <br /> conductivity, temperature) at intervals of one casing volume <br /> I <br /> melt Dewaters after one Purge Volume Well Readily Recovers <br /> (Low yield welt) <br /> 1-7 <br /> o`-Jell Recharges to80% of Initial Record Groundwater Stability Indicator <br /> yeasured Mater Column sleight in Parameters from each Additional Purge Volume <br /> Feet within 24 hrs of Evacuation Stability indicated when the following Criteria are met <br /> I <br />+easure Groundwater Stability Indicator pH + 0 1 pH units <br />>arameters (pH, Temperature, Conductivity) Conriuct i vi ty- + 10% <br /> Temperature 1.0 degrees F <br /> I <br /> I I <br />:ollect Sample and Complete Groundwater Stability Achieved Groundwater Stability Not Achieved <br /> main-of-Custody I I <br /> Collect Sample and Complete Continue Purging Until Stability <br /> Chain-of-Custody is Achieved <br /> I <br /> rve Sampte According to Required Preserve Sample According Collect Sample and ccaplete <br /> at Analysis to Required Chemical Analysis Chain-of-Custody <br /> I <br /> Preserve Sample According to Required <br /> Chemical Analysis <br /> I <br />-ansport to Analytical Laboratory Transport to Ariatytical Laboratory Transport to Anal yticat Laboratory <br />