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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> ASSOCIATE! AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YE5 NO <br /> I <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR ? <br /> DISSOLVED CONSTITUENTS P -t r h x 7 48 x 3 <br /> where• <br /> P = calculated purge vaiume (gailans) <br /> T7 - 3 14 <br /> r = radius v well casing in feet <br /> h = height ct water catumn 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(pH. CONDUCTIVRY. <br /> TEMPERATURE)AND TURBIDITY AT 1NTERVAL3 <br /> OF ONE CASING VOLUME- <br /> NO <br /> OLUMENO 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. - t 10% <br /> TEMP = t 1 0 OF <br /> YES NO <br /> YES NO <br /> i2 <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 SAMPLINCL <br /> WELL SAMPLING WATER, MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING <br /> FOR STABILITY <br /> ���O� FR3URE <br /> MONITORING WELL PURGING PROTOCOL A-1 <br /> Associates <br />