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Project: Well Number:
<br /> t1 in Tracy, CA
<br /> Job #/Description: Prepared By: Purging/Sampling
<br /> 2 & 4" Monitoring Well : Date:
<br /> QED MP-SP Bladder Pump j I BRU F 3 L3
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<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 /> Date
<br /> Equipment Model
<br /> Serial # Received/Serviced Date Calibrated
<br /> Bladder Pump I QED MP-SP with MP-10/15 controller 1 38355 12/19/18 N/A
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<br /> Muitimeter YST PRO D55 17M100630 8/10/2021 —17-23
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<br /> Pump.and Flow Cell-Volume _..._..._. _��. =...... .9. .........__._.................. mi. i Pumping System Volume Calculation
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<br /> Tubing Inside Diameter D = 0.17 in. Pumping System Volume (VS)
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<br /> Tubing Length L = �5 .in, VS = VP + 71 * D2/ 4 * L * 16.39 ml/in3
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<br /> Conversion from Inches3 to ml € 1 in3 = 16.39 ml. E Vs = ( 595 ) + (3.1415 * 0.172/ 4) * ( ) * 16.39
<br /> Purging Data Water Quality Parameters (within range for 3 consecutive readings)
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<br /> Time € Purge ! Flow Water Temp a Conductivity DO pH ORP Turbidity -
<br /> (24 hr) Volume Rate Level (�C) (µ5/cm) (mg/L) (mv) (►vru)
<br /> (ml) I (ml/min) ` cl}. o ±10%or
<br /> Stabilization t 3 /o t 0.2mg/L t 0.2 t 20mV <10NTU
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<br /> Remarks: Bladder pump used for both purging and sampling.
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<br /> Based on EPA iow-flow sampling guidelines.
<br /> Signature: Checked By:
<br /> Modified 3/16/2023 Page of
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