Laserfiche WebLink
U MONITORING WELL <br /> z - -- <br /> PURGING PROTOCOL <br /> • EMCON MEASURE AND RECORD DEPTH TO WATER <br /> ASSOCIATIES AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS USING THE FOLLOWING EQUATION* <br /> DO NOT SAMPLE WELL FOR P w n r 2 h x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS, where: <br /> P = cak=ated purge volume (gallons) <br /> T1 a 3.14 <br /> r = radas of weii casing in feet <br /> h = heignt of water column 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. CONDUCT VITY, <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME. <br /> NO YES <br /> FINAL rNO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL RECHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING SUFFICIENT FOR SAMPLE <br /> CRrMRIA COLLECTION WITHIN 24 HOURS <br /> PH a t 0 1 PH units OF EVACUATION TO DRYNESS. <br /> COND. 3 t 10% <br /> TEMP 1 0 °F <br /> YES 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 SAMPLING. <br /> WELL SAMPLING WATER, MONITORING PROCEED TD WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY <br /> FIGURE <br /> "] MONITORING WELL PURGING PROTOCOL Awe <br /> EMCON <br /> Associates <br />