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Project: Well Number: <br /> inTracy, CA <br /> Job #/Description: Prepared By: Purging/Sampling <br /> 2 & 4" Monitoring Well Date: <br /> QED MP-SP Bladder Pump BRU � /t 7 123 <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 # ©ate Date Calibrated <br /> Received/Serviced <br /> ladder Pump QED MP-SP with MP-10/15 controller 38355 i 3 12/19/1$ <br /> Multimeter Y5I PRo 55 ' 17M100630 8/10/2021l7-23 <br /> i <br /> i <br /> Pump and Flow Cell Volume Vk = .59� MI. Pumping System Volume Calculation <br /> »». <br /> Tubing Inside Diameter - M D _= 0.17 in. Pumping System Volume (Vs) <br /> Tubing Length <br /> ..............................._._....._........__.._....__...................-_.... .39 / <br /> �- 3 gin. VS = VP + � Dz/ 4 * L * 16 ml in <br /> 3 <br /> Conversion from Inches3 to ml 1 in = 16.39 mi. 33'3Vs = ( 595 ) + (3.1415 * 0.172/ 4) ( ) * 16.39 <br /> Purging Data Water Quality Parameters (within range for 3 consecutive readings) <br /> .....................-._ ....:.... ..... . <br /> _f..... .......... <br /> Purge Flow ? I Temp Conductivity DO ; ORP ? Turbidity <br /> Time Water (°C) {his/cm) (mg/L) pH (mV) {nRu) <br /> 24 hr Volume Rate <br /> ( ) (ml} (ml/min) bevel stabilization (1�: f 3% t �10% or <br /> 0.2mg/L t 0.2 E t 20mV <10NTU <br /> 2 <br /> � r <br /> l Inrtiai ' 17 3 / <br /> i <br /> i : 3 s <br /> 2Z 7 7so 15.�3 = 1� } 7z. T 2 _.... <br /> ........._.................»......»»«..........._........................_.... ...1,___..........._..._..................--------_ _..._.._.,.» ......__ _._.__—».....«......_..............._ ....____.....».« .........,.. ..,.................... <br /> .............. _..____ <br /> E <br /> E � <br /> rI I <br /> f 1 <br /> ► ? 3 7. zs <br /> I b 3 r� .� � �. 2 i 7- Z� /i <br /> .......,......._..._........_..._.._ -_..._ _ .__........ _ __._...._...._............................... ....__......................_.........__...-.................... <br /> ... <br /> EEE <br /> s , y 3 »»................_.........._._�...... <br /> __......._...,._............_.,.....»...»«»»..._..._._..__.._...».... .............._.—....____._..__i....................•...«..............__.t..._ »_»..»»»....._...—_.--__ 7 _.....__.............. .««........__...«........._..........,.__ _._•--..�.�_.�.«.....»....»».»»_».».,»„».�. »..,_........_...._............ <br /> 1 <br /> .......... <br /> ................................... <br /> = I � <br /> Remarks. Bladder pump used for both purging and sampling. <br /> .................... <br /> __. <br /> _._ _»....» ............._...._..........................__._-_....».........,_...« <br /> (1) Based on EPA low-flow sampling guidelines. <br /> .................................................._................__._........................_......................,.,....................................................................._._...............................__ ....»..___........__..._ 1 ____w...._._...--__._. _._..»....»...»»_..__....... --..._..._...»...-....._.—»*..._....._.........__ <br /> Signature; Checked By: <br /> Modified 3/16/2023 Page of <br />