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Testing, Sampling, and Analysis Plan <br />January 15, 2025 <br />4 <br />Zone 7 Water Agency and <br />City of Pleasanton <br />E. Casing/borehole size <br />F. Surface elevation (if available) <br />G. Services requested (logs run) <br />H. Perforated intervals <br />I. Pump depth <br />J. Pump rate <br />K. Drill depth or completed depth <br />L. Logging depth <br />3.4. Logging Order <br />The spinner/flowmeter is normally run prior to the depth-specific sampling program. The spinner log will <br />help determine where the samples will be collected based on the well-bore flow profile. <br />3.5. Calibration <br />The spinner log will be run at multiple tool velocities to develop a slope and ensure repeatability of the <br />fluid velocities within the well-bore. <br />Basically, there are three types of tool calibration standards: <br />1. Primary calibration standards involve permanent test pits, which are primarily used to calibrate <br />logging tool prototypes and shop standards. <br />2. Secondary or shop calibration standards are transportable calibration standards that are referenced <br />to the primary standards. Shop standards are often too bulky to be easily transported to field sites. <br />Logging sondes should be checked against these standards on a monthly basis. <br />3. Tertiary or field standards are compact enough that they can easily be taken to the field to verify that <br />the sondes calibration has not drifted from the shop calibration at each logging job. <br />3.6. Standard Procedure for Logging Operation <br />Pacific Surveys logging equipment is fixed and mounted within a vehicle. It consists of a winch that spools <br />the wireline, a data processing system that powers up and processes the data, and a computer that <br />collects and plots the data. <br />3.6.1. Pacific Surveys Logging Procedures consist of the following steps: <br />1. Parking and securing the logging vehicle at the well/borehole. <br />2. Rigging up, consisting of hanging a sheave wheel or using a boom to support the wireline during <br />logging operations. <br />3. Rigging up the sondes and centering them within the well/borehole. <br />4. Powering up the sonde and checking the acquisition system’s outputs for correct voltage, tool current <br />and applicable tool measurements. <br />5. Zeroing the tool to the log datum (i.e., ground surface, top of casing).