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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> asoc:�rts AND WELL TOTAL. DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES � <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USWG THE FOLLOWING EOUATION• <br /> DO NOT SAMPLE WELL FOR p ri r 2 h x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS. where• <br /> P = Calculated surge volume (gallons) <br /> Ti - 314 <br /> r = radius Of wetl casing to feet <br /> h = height of water column to tees <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED TO PRACTICAL LJMITS THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONrrORING GROUND-WATER STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH. CONDUCTAMY, <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME <br /> NOt YES <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL RECHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING SUFFICIENT FOR SAMPLE <br /> CRITERIA. COLLECTION WITHIN 24 HOURS <br /> pH - t 0 1 pH units OF EVACUATION TO DRYNESS. <br /> GOND. - t 10% <br /> TEMP = + 1 0 OF <br /> E <br /> NO <br /> YES NO <br /> FIELD TEST FIRST RECORD W&L <br /> WELL PURGING CONTINUE PURGING: RECHARGE WATER FOR AS DRY FOR <br /> CRLTERIA MET. EVACUATE ADDITIONAL INDICATOR PARAMETERS PURPOSES OF <br /> PROCEED TO CASING VOLUME OF AND TURBIDITY.THEN SAMPL <br /> WELL SAMPLING WATER, MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY <br /> &EMCON '�"' <br /> Associatei'll MONITORING WELL PURCI NG PROTOCOL Aw l <br />