Laserfiche WebLink
a <br />MONITORING WELL PURGING PROTOCOL <br />MEASURE AND RECORD DEPTH TO WATER AND <br />WELL TOTAL DEPTH <br />CHECK FOR FLOATING PRODUCT <br />I YES I <br />MEASURE AND DOCUMENT <br />FLOATING PRODUCT THICKNESS <br />DO NOT SAMPLE WELL FOR <br />DISSOLVED CONSTITUENTS <br />WELL EVACUATED TO PRACTICAL LIMITS <br />OF DRYNESS BEFORE REMOVING <br />CALCULATED PURGE VOLUME <br />IMMOM <br />FINAL TWO SETS OF GROUNDWATER <br />STABILIZATION INDICATOR PARAMETER <br />MEASUREMENTS MEET THE FOLLOWING <br />CRITERIA <br />PH = * 0 1 pH units <br />COND = ± 10 % <br />TEMP =±100F <br />I YES I <br />I NO I <br />I NO I <br />CALCULATE PURGE VOLUME BY <br />USING THE FOLLOWING EQUATION <br />P=nr2hx748x3 <br />where <br />P = calculated purge volume (gallons) <br />n=314 <br />r radius of well casing in feet <br />h heivht of water column in feet <br />EVACUATE WATER FROM WELL EQUAL TO <br />THE CALCULATED PURGE VOLUME WHILE <br />MONITORING GROUNDWATER <br />STABILIZATION INDICATOR PARAMETERS <br />(pH, CONDUCTIVITY, TEMPERATURE) AT <br />INTERVALS OF ONE CASING VOLUME <br />I YES I <br />WELL RECHARGES TO A LEVEL <br />SUFFICIENT FOR SAMPLE <br />COLLECTION WITHIN 24 HOURS <br />OF EVACUATION TO DRYNESS <br />I YES I <br />WELL PURGING CONTINUE PURGING, EVACUATE FIELD TEST FIRST RECORD WELL <br />CRITERIA MET, ADDITIONAL CASING VOLUME RECHARGE WATER FOR AS DRY FOR <br />PROCEED TO OF WATER, MONITORING INDICATOR PARAMETERS, PURPOSES OF <br />WELL SAMPLING INDICATOR PARAMETERS FOR THEN PROCEED TO WELL SAMPLING <br />STABILITY SAMPLING <br />F <br />INTERNATIONAL <br />1 TECHNOLOGY MONITORING WELL PURGING PROTOCOL <br />CORPORATION <br />