Laserfiche WebLink
� MONITORING <br /> WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> .rroc:asrs AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES <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- n r 2 h x 7 48 x 3 <br /> where: <br /> P = caiauiateh purge volume(gaiions) <br /> TT - 3.14 <br /> r = rachis of we4t casing in feet <br /> h = heigrtt of water cotumn in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED TO PRACTICAL LIMITS THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH, CONDUCTIVITY, <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> — - — OF ONE CASING VOLUME T <br /> r NO <br /> YES <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING WELL RECHARGES TO A LEVEL <br /> CRITERIA SUFFICIENT FOR SAMPLE <br /> PH - t 0.1 pH units COLLECTION WITHIN 24 HOURS <br /> COND. - 1 Q% OF EVACUATION TO DRYNESS. <br /> TEMP = 10 OF <br /> E <br /> ES NOEYES NO <br /> FlELD 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 /> EMCON SURE <br /> Associates MONITORING WELL PURGING PROMCOL Ail <br />