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Zone 7 Water Agency – Hansen Park Test Well Summary <br />and Production Well Design Recommendations <br />7 Zone 7 Water Agency <br />December 2025 <br />Table 8 summarizes the flow contribution for each screen section in the well. The dynamic spinner survey <br />log is included in Appendix A. <br />Table 8. Zonal Flow Contribution Pumping Conditions <br />Screen Interval (feet bgs) Production (gpm) % of Flow <br />298-318 92 15.4 <br />458-518 293 49.0 <br />518-578 121 20.2 <br />608-628 25 4.2 <br />656-676 31 5.2 <br />736-756 36 6.0 <br />The results of the spinner survey show that 85% of the total well yield is derived from screened intervals <br />above 578 feet bgs. The low contribution from the lower three screen sections is not surprising, <br />considering the thickness and the resistivity response on the geophysical log of those zones. <br />A spinner survey was also conducted in the well to measure flow under non-pumping (static) conditions <br />(Appendix A). The results of the static spinner survey show that water flows within the well from the <br />upper screened interval into the lower three screened intervals under non-pumping conditions. Table 9 <br />summarizes the flow contribution for each screen section in the well under static conditions. Positive <br />values for production and % of flow indicate water is moving into the well structure through screen <br />sections, negative values indicate where water is moving out of the well structure those screened sections. <br />Table 9. Zonal Flow Contribution Static Conditions <br />Screen Interval (feet bgs) Flow (gpm) % of Flow <br />298-318 12.2 100 <br />458-578 0.0 0 <br />608-628 (-0.5)(-4) <br />656-676 (-3.5) (-29) <br />736-756 (-8.2) (-67) <br />2.6. Well Yield Estimation <br />LSCE used the data derived from the constant rate pumping test, combined with data regarding the range <br />of expected regional groundwater levels, to develop well pumping capacity estimates for the wells <br />constructed at Hansen Park, Del Prado Park, and Tennis Park. The methodology, data, and analysis used <br />to develop pumping capacities for the three sites are detailed in Appendix C. Table 10 summarizes the <br />estimated pumping capacity of a well constructed per the design recommendation presented in Section <br />3 at Hansen Park.