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Project: Well Number: <br /> in Tracy, CA <br /> Vol <br /> 2 & 4" Monitoring Well 1 Job #/Descriptiion: Prepared By: Purging/Sampling <br /> Date: <br /> QED MP-SP Bladder Pump BRU <br /> j <br /> Micro-Purge Sampling Lo 3 � T7 � z3 <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 <br /> I <br /> Received/Serviced ; Date Calibrated <br /> Bladder Pump QED MP-SP with MP-20/15 controller 38355 12/19/18 N/A <br /> : <br /> _ ... ».«........-..__._..._.................................... _..__.... <br /> Multimeter Y5I PRO 55 <br /> i7M100fi30 <br /> _. 8i10/2021 <br /> ! , <br /> Pump arad Flow Cell Volume VQ.._...__...._� _ -ml.�_ Pumping System Volume Calculation <br /> ....__._..._.._.......-_._. ....__.__.__.._._... I ......_.. <br /> T ............. Inside __...i __�-_....- ..-_.......-.__...�. ., <br /> Tubing Len th - <br /> _........................................ .........._..._................._...-..___._.......__._....».. _»_...... L m. Vs = VP + n * D2/ 4 * L * 1fi.39 ml/in3 <br /> ! � LZ6 'I <br /> Conversion from Inches3 to ml j 1 in3 = � 7 <br /> 16.39 MI. gVs = ( 595 ) + (3.1415 * 0.172/ 4) * ( (-R b ) * 16.39 <br /> : <br /> -Purging Data Water Quality Parameters (within range for 3 consecutive readings) <br /> Time <br /> Purge Flow Temp Conductivity DO ORP Turbidity <br /> (24 hr) Volume Rate Water <br /> (1,�) 3 (AS/cm) (mg/L} j pH (mv) (NTU) <br /> (ml/min) <br /> Stabilization M: t 3% t 0.2mg/L 0.2 t 20mV t10% or <br /> � 3 , I <br /> I <IONTU <br /> . Z. Initial I 2 'D i t.� /Jr ' • 3 <br /> 7 , 7 <br /> : <br /> -.... ... ____ <br /> l <br /> r 3 � 1 7 � 4 <br /> .».........._........_.._...................._._........_.._..__....-... ..»...............................{..._......._................---....... _...........»...._.................._........,- ......»......._ <br /> S <br /> 7. 'i <br /> ............. .............. .............4__. <br /> ......._........................ . .......�............_...... <br /> .......... __ _ __.._.. <br /> 3.75- 21,17 <br /> __...._I <br /> Z r <br /> _..._... .............» `t7 <br /> ................................. _... <br /> .......i;p........... <br /> 131441 5 zl.Zg i 6 Z r 7&0 7 <br /> f............... ---—-------- ................................ <br /> i <br /> ........................ <br /> ----........ ...... j _._.._.._...._..----- ._. ._.._.____ .........«« _..-..__w.. _.__. .._....... <br /> I <br /> I <br /> Remarks: Bladder pump used for both purging and sampling. <br /> ......... ........_.....__.......... ._.................._.._._.- . _..._._._ ._ -............._......__.................................._... __.. _ _ -.....-......................-..... <br /> . »..._.... <br /> 4, led .�+ 13'• y 9 <br /> Based on EPA low-flow sampling guidelines. <br /> ........ .... .........-......._.........._..........................._....._................................--........_ <br /> Signature: 'I?,.- 1 } Checked By: <br /> Modified 3/16/2023 Page of <br />