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Sampkrr 'row Reviews Project <br /> Sam li Irements. Schedule <br /> Field Damon & <br /> Instrument Calibration <br /> Check Integrity of Well <br /> (inspect for Well Dame e) <br /> Measure a.Record Depth to Water <br /> and Total.Well Depth with <br /> Interface Probe <br /> Measure Floating Product Thickness <br /> wftft Interface Probe <br /> Floating Product Not Present <br /> or Visible Product Sheen Oniy <br /> Floating Product Present <br /> Check Visible Water <br /> Confirm Product Thickness Purge Volume Calculation <br /> with Clear Sailer <br /> V = sc(r/12) s h(X vol)(7.48) _ _gallons <br /> Collect Free Productm V = purge volume (gallons) <br /> Dissolved Product Sam le Not Regulred X = 3.14 <br /> r ; inner well radius (inches) <br /> h = water column height (feet) <br /> f5pl7lng <br /> Data onReid X = desired number of casin volumes <br /> Data Sheet <br /> Evacuate water from well equal to the calculated <br /> purge volume while monitoring groundwater <br /> stabilization parameters (if appropriate) at <br /> intervals of one casino volume <br /> Well Dewaters After One Purge Volume Well Readily Recovers <br /> (low yield well) <br /> Well Recharges to 70%of Initial If appropriate, record groundwater stability <br /> Measured Water Column Height parameters with each purge volume. Stability <br /> Is Indicated when the following criteria are met: <br /> Measure Groundwater Stability pH -.t 02; Conductivity - .t 10%; <br /> Indicator Parameters Temperauture = t 1.0 °C <br /> If Appropriate <br /> Collect and Preserve Sample Groundwater Stability Achieved Groundwater Stability <br /> According to Required Chemical <br /> Analysis Collect Sample & Complete <br /> Chain-of-Custody Continue Purging Until <br /> Complete Chain of Custody Stability Is Achieved. <br /> ransport to Analytical Laboratory [or a Maximum of t0 Well Volumes <br /> ransport to Analytical Laborato Collect Sample & Complete <br /> Chain-of-Custody <br /> ranspori to Analytical Laboratory <br /> HYDR <br /> EN M16NNENTAL PLATE A-3 <br /> 1 ECIH 6 LOGEES, INC, WATER SAMPLING <br /> FLOWCHART <br />