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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> AaSoo I&TES AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> F <br /> NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION' <br /> DO NOT SAMPLE WELL FOR P. -i r 2-h x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS where <br /> P = calculated purge volume (gallons) <br /> Ty - 3.14 <br /> r = radius of Weil casing m tees <br /> h = 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(pH, CONDUCTIVRY, <br /> TEMPERATURE) AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME. <br /> NO <br /> 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 EJACUATION TO DRYNESS. <br /> COND. = t 10% <br /> TEMP = 1 0 OF <br /> YE5 NO <br /> YES NO <br /> FIELD TEST FIRST RECORD WELL <br /> WELL PURGING CONTINUE PURGING, RECHARGE WATER FOR AS DRY FOR <br /> CRITERIA MET. EVACUATE ADDITIONAL INDICATOR PARAMETERS PURPOSES OF <br /> PROCEED TO CASING VOLUME OF AND'TURBIDITY, THEN SAMPLIN3. <br /> WELL SAMPLING WATER, MONITORING PROCEED TO WELL <br /> IN PARAMETERS SAMPLING. <br /> FOR STABILITY <br />� EM c o NRGURE <br /> MONITORING WELL PURGING PROTOCOL <br /> IIA-11 <br /> Associates <br />