Evaluation of Groundwater Supply Alternatives Within Bernal Subbasin

Table 1 Turnout Flows for Existing Maximum Day Demand Alternatives Groundwater Supply Alternative Evaluation City of Pleasanton PRELIMINARY Fill (Max Flow)Drain Average (psi)(psi)(gpm)(gpm)(gpm) Alternative 1a - Existing Demands with 100% Zone 7 Purchases (26.8 mgd) TO 1 Lower 52-86 psi 93 psi 2,200 1,800 2,029 Operating TO1 helps balance Foothill and Sycamore Tank Levels TO 2 Lower 59-89 psi Avg. 58 psi 46-68 psi 0 0 0 Zone 7 pressures too low to operate TO 3 Lower 51-86 psi Avg. 123 psi 88-149 psi 2,000 1,000 1,571 TO 4 Lower (To be boosted when required) 60-89 psi Avg. 97 psi 75-145 psi 5,200 3,800 4,600 Booster Station at TO4 Planned TO 5 Lower 47-84 psi Avg. 117 psi 50-160 psi 5,500 4,500 5,071 TO 6 Bonde (Boosted)82-94 psi 2,420 0 1,485 TO 7 Ruby Hill Upper (Boosted)128 - 157 psi 1,740 0 905 TO 8 (Proposed)Lower 44-82 psi 3,600 2,600 3,171 Proposed Turnout near Vineyard and Bernal Fill (Max Flow)Drain Average (psi)(psi)(gpm)(gpm)(gpm) Alternative 1b - Existing Demands with 2 New City Wells (26.8 mgd) TO 1 Lower 53-81 psi 93 psi 2,000 1,000 1,571 Operating TO1 helps balance Foothill and Sycamore Tank Levels TO 2 Lower 63-88 psi Avg. 58 psi 46-68 psi 0 0 0 Zone 7 pressures too low to operate TO 3 Lower 53-81 psi Avg. 123 psi 88-149 psi 1,500 1,500 1,500 TO 4 Lower (To be boosted when required) 61-87 psi Avg. 97 psi 75-145 psi 4,500 2,400 3,600 Booster Station at TO4 Planned TO 5 Lower 46-75 psi Avg. 117 50-160 psi 5,500 4,000 4,857 TO 6 Bonde (Boosted)82-93 psi 2,420 0 1,515 TO 7 Ruby Hill Upper (Boosted)128 - 155 psi 1,740 0 905 Tennis Park Well Lower 63-89 psi -2,500 Hansen Park Well Lower 64-90 psi -2,500 10/6/2025 Supply ID Destination Zone Pleasanton Pressures Zone 7 Historical Pressures Turnout Flow Comments 2,500 2,500 CommentsSupply ID Destination Zone Pleasanton Pressures Zone 7 Historical Pressures Turnout Flow Docusign Envelope ID: A2CEC78C-F0FD-4D4D-9F39-237EDFC2492E