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MONITORING WELL ,PURGING PROTOCOL <br /> Ili' .i <br /> { • ENICON,, MEASURE' AND RECORD DEPTH TO WATER I <br /> assacures AND WELL TOTAL DEPTH F ' <br /> I„ <br /> !il CHECK FOR FLOATING PRODUCT . <br /> r YES <br /> CALCULATE PURGE VOLUME BY <br /> DO NOT SAMPLE WELL USING THE FOLLOWING EQUATION: <br /> FOR DISSOLVED _ <br />!' CONSTITUENTS. where: P 7T r 2 h x 7.48 x 3 <br /> P calculated purge volume(gallons) <br /> n 3.14 <br /> r a radius of well casing in feet <br /> h a height of water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED TO PRACTICAL LIMIT THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS <br /> (pH, CONDUCTIVITY, TEMPERATURE) , <br /> AT INTERVALS OF ONE CASING VOLUME. <br /> NO YES <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING WELL RECHARGES TO A LEVELS <br /> CRITERIA: SUFFICIENT FOR SAMPLE <br /> pH = t 0.1 pH units COLLECTION WITHIN 24 HOURS <br /> COND. _ 10% OF EVACUATION TO DRYNESS.'. <br /> TEMP. t 1.0 OF <br /> , " YES NO <br /> WELL PURGING CONTINUE PURGING; FIELD TEST FIRST RECORD WELL <br /> CRITERIA MET; EVACUATE ADDITIONAL RECHARGE WATER FOR AS DRY FOR <br /> PROCEED TO CASING VOLUME OF <br /> INDICATOR PARAMETERS, PURPOSES OF <br /> WELL SAMPLING WATER. MONITORING THEN PROCEED TO WELL SAMPLING. <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY. <br />�. FIGt1RE <br /> EMCON <br /> WELL PURGING PROTOCOL <br /> Associates B'1 <br />