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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> ASSOGIArR3 AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> E <br /> NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION: <br /> 00 NOT SAMPLE WELL FOR P . -1 r z h x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS. where <br /> P = calculated purge volume (gattons) <br /> n - 314 <br /> r = radius cr well casing in teet <br /> h = height ct water cotumn in teet <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 dpH, 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 EVACUATION TO DRYNESS. <br /> COND = 10% <br /> TEMP = 1 0 °F <br /> -- ' YES NO <br /> 1:YE5 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 SAMPLING. <br /> WELL SAMPLING WATER, MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY <br /> RGURE <br />! EMCON <br /> MONITOAINd WELL PURGING PROTOCOL_ Aml <br /> Associates <br />