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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
City of Pleasanton
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2026
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042126 REGULAR
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Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin
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4/14/2026 10:07:54 AM
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4/14/2026 9:55:49 AM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
4/21/2026
DESTRUCT DATE
15Y
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i Client Name <br />Month Year <br />TABLE OF CONTENTS <br />1. INTRODUCTION AND PURPOSE ................................................................................................................1 <br />2. WELL AND AQUIFER TESTING ...................................................................................................................1 <br />2.1. Well and Aquifer Testing Procedures................................................................................................1 <br />3. SPINNER/FLOWMETER, AND DISCRETE DEPTH SAMPLING STANDARD OPERATING <br />PROCEDURE, PACIFIC SURVEYS.....................................................................................................................3 <br />3.1. Applicability.......................................................................................................................................3 <br />3.2. Scope .................................................................................................................................................3 <br />3.3. Data Collection ..................................................................................................................................3 <br />3.4. Logging Order....................................................................................................................................4 <br />3.5. Calibration .........................................................................................................................................4 <br />3.6. Standard Procedure for Logging Operation ......................................................................................4 <br />3.6.1. Pacific Surveys Logging Procedures consist of the following steps: ..........................................4 <br />3.7. Theory of Operation..........................................................................................................................5 <br />3.7.1. Spinner (Flowmeter)...................................................................................................................5 <br />3.7.2. Depth-Specific Fluid Sampling....................................................................................................5 <br />4. EQUIPMENT, CALIBRATION, AND DECONTAMINATION...........................................................................7 <br />4.1. Equipment .........................................................................................................................................7 <br />4.2. Calibration .........................................................................................................................................7 <br />4.3. Decontamination...............................................................................................................................7 <br />5. PROCEDURES AND SAMPLE COLLECTION.................................................................................................7 <br />5.1. Depth-to-Water Measurements........................................................................................................8 <br />5.2. Purging Protocol................................................................................................................................8 <br />5.3. Sample Collection..............................................................................................................................8 <br />6. LOGISTICS AND DOCUMENTATION...........................................................................................................9 <br />7. METHODS AND TIMELINES .......................................................................................................................9 <br />7.1. Methods ............................................................................................................................................9 <br />7.2. Timeline...........................................................................................................................................10 <br />8. QUALITY ASSURANCE PROCEDURES.......................................................................................................10 <br />8.1. Field Quality Control........................................................................................................................11 <br />8.1.1. Equipment Blank ......................................................................................................................11 <br />8.1.2. Field Blank ................................................................................................................................11 <br />8.1.3. Field Duplicate..........................................................................................................................11 <br />8.2. Laboratory Quality Control..............................................................................................................11
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