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t1 Project: Well Number: <br /> t� in Tracy, CA <br /> & 4" Monitoring Well Job #/Description: Prepared By: i Purging/Sampling <br /> Date: <br /> QED MP-SP Bladder Pump BRU <br /> I <br /> 3 / ) 7 / Z3 <br /> Micro-Purge Sampling Log <br /> Sampling Protocol: Flow rate must be within 200 to 300 milliliters per minute. Flow rate must be steady while maintaining a DTW <br /> drawdown of less than 0.33 feet. A minimum of one system volume (VS) must be purged prior to recording the water-quality <br /> indicator parameters if using a dedicated pump. Monitor and record parameters every three to five minutes. Stabilization for 3 <br /> consecutive measurements of pH, conductivity, ORP, DO, and turbidity is required before sampling. Do not sample from flow-through <br /> cell. <br /> Equipment Model Serial # Date ' Date Calibrated <br /> Received/Serviced <br /> Bladder Pump <br /> QED MP-SP with MP-10/15 controller 38355 12/19/18 i N/A <br /> ._. ^..,,._ _ «.._.__............... <br /> Multimeter 1 YSI PRO D55 17M100630 8/10/2021 «Y~ .3 Z <br /> -._.._......._ ..�..._..»»»..-...� _._.....------------.....__ .«. _._.--- _ ..__........�__. ... .....____..-......_..__._ ._... ......_ ........................ <br /> ,«.. <br /> Pum , and Flow Cell Volume V ml. Pumping System Volume Calculation <br /> ..................P............,.._......_.__.._...._...__...................__...----... _ - _........ <br /> Tubing Inside Diameter D = 0.17 in. .• Pumping System Volume (Vs) <br /> .Tubi.n.g Length __..._..._............._____....---.-.._..._.._. L - �52. f f'r. V - VP + n * Dz 4 * L * 16.39 ml in3 <br /> Conversion from Inches3 to ml 1 in 3 = 16.39 mi. Zg- s = { 595 ) + (3.1415 * 0.172/ 4) * ( .6:5,eD) * 16.39 <br /> Purging Data <br /> Water Quality Parameters (within range for 3 consecutive readings) <br /> Time Purge Flow ' Water Temp 3 Conductivity DO i PH ORP Turbidity <br /> (24 hr Volume I Rate Level ( c) (�6/cm) (mg/i-) I (mv) (NTu) <br /> (MI) (mi/min) <br /> Stabilization(1): t 3% t 0.2mg/L t 0.2 i t 20mV }10%or <br /> <iONTU <br /> Initial Z.��L7 .�t. 3` '�, J 1 7 2 I-- <br /> _ 1- <br /> «. --......_ .......__« __..... JVIA- <br /> _..............---- --- _ ....... ..«......«__E. <br /> 15: 4 i 75� Z' -V I$ 24 ) g ~7• 2- <br /> i <br /> i 1 <br /> _ , « _ .........— .................. <br /> ...................._....._« _....�_..__._. __. . <br /> _..._.. ._,.-,..-_....._________.T_ <br /> aO y ,s r 4Si 1S , © 2yzs - 7,z3 ---- <br /> : <br /> ................_.....«_.—. ._. .......,..«-...�....________.."'____..,.._ .....«.,«............,,.. i ._,,,,«. ......_.._._....�.— ........................... I----^.....«.-»»...».»_«__,...--'�'__—_..—._.._"___.—.»..___ <br /> I � } <br /> ° � e <br /> i <br /> I <br /> ........._...... _.._.............._.T_«_.____- -..««««-_ _.... <br /> Remarks: Bladder pump used for both purging and sampling. <br /> .............. .««,.,.... ..«......._..._................................_.«_, .- -- ....._...__......---- - � _.�.__.—__.. -_ � . _...._ ---------...._ __..w .____............................__._.__.....,...«...««_.......... <br /> ` -l� a� l 6.�3 <br /> L3 ............_........ l o ._..._.__......__.,...................._................_..._............»»»......». <br /> «� Based on EPA low-flow sampling guidelines. <br /> ...............«....»,,......._._.._«........_..._...._..........._..............«............._............................-_-•---.....«»............_.«_.__._«_ __..._ � _ , __ __...._..._...---._........ «... «_...___««______--------.................................... <br /> Signature: Checked By: <br /> Modified 3/16/2023 Page of <br />