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MONITORING WELL PURGING PROTOCOL <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> T <br /> CHECK FOR FLOATING PRODUCT <br /> YES <br /> NO <br /> EDONOT <br /> =CONSTITUENTS <br /> CALCULATE PURGE VOLUME BY <br /> NESS USING THE FOLLOWING EQUATION <br /> P = nr= x748x3 <br /> S where <br /> P =calculated purge volume(gallons) <br /> n =3 14 <br /> r=radius of well casing in feet <br /> h =height of water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> =DRYNESS <br /> O PRACTICAL LIMITS <br /> THE CALCULATED PURGE VOLUME WHILE <br /> ORE REMOVING MONITORING GROUNDWATER <br /> URGE VOLUME STABILIZATION INDICATOR PARAMETERS <br /> (pH, CONDUCTIVITY, TEMPERATURE)AT <br /> INTERVALS OF ONE CASING VOLUME <br /> NO <br /> YES <br /> INAL TWO SETS OF GROUNDWATER <br /> I'ABILIZATION INDICATOR PARAMETER <br />[EASUREMENTS MEET THE FOLLOWING <br /> RITERIA <br /> pH = 0 1 pH units WELL RECHARGES TO A LEVEL <br /> ± ENT FOR SAMPLE <br /> GOND =� 10 SUFFICICOLLECTION WITHIN 24 HOURS <br /> TEMP — 1 0 °F OF EVACUATION TO DRYNESS <br /> YES NO <br /> FFIRST <br /> NO <br /> WELL PURGING CONTINUE PURGING DEVACUATE FIELD TEST CRITERIA MET, ADDITIONALCASINGRECHARGE CORD WELL <br /> PROCEED TO OF WATER MONITORPU DRY FOR <br /> INDICATOR , PURPOSES OF <br /> WELL SAMPLING INDICATOR PARAMETTHEN PROCEED TO WELL <br /> STABILITY SAMPLING <br /> SAMPLING <br />� FIGURE E_ <br /> MONITORING WELL PURGING PROTOCOL A-1 <br />