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Groundwater Supply Improvements
<br />Alternative 1
<br />Offset GPQ w/ Zone 7
<br />Wholesale Purchases
<br />(Baseline)
<br />Alternative 2
<br />Joint Project with
<br />Zone 7
<br />City Project (3)
<br />(per WSA / WDSCMP)
<br />Alternative 3
<br />City Project
<br />(Revised)
<br />No City groundwater supply improvements; GPQ offset w/ Zone 7
<br />purchases at wholesale rate and delivered by Zone 7 at turnouts (1) $ -
<br />Zone 7 operated new wells at Tennis and Hansen Park and City GPQ
<br />delivery by Zone 7 at turnouts (2) TBD
<br />City operated new wells at Bernal Park & Del Prado Park (3)15,701,920$
<br />City operated new wells at Tennis Park and Hansen Park (4)TBD
<br />Near-Term City Distribution Improvements
<br />Alternative 1
<br />Offset GPQ w/ Zone 7
<br />Wholesale Purchases
<br />(Baseline)
<br />Alternative 2
<br />Joint Project with
<br />Zone 7
<br />City Project (3)
<br />(per WSA / WDSCMP)
<br />Alternative 3
<br />City Project
<br />(Revised)
<br />S-1: 3,250 feet of 24-inch pipeline (the existing 12-inch to be abandoned) in
<br />Stoneridge Road between Hopyard Road and Johnson Drive
<br />S-2: 1,600 feet of 18-inch pipeline in Bernal Avenue between Nevada Court
<br />and Vineyard Avenue.
<br />S-3: 4,650 feet of 20-inch pipeline in Sunol Boulevard between Bernal
<br />Avenue and Sycamore Road
<br />I-2: 160 feet of 18-inch pipeline in Stoneridge Drive from Turnout #4 to
<br />Hopyard Road
<br />I-3: Replace 210 feet of existing 10-inch pipeline with a new 16-inch pipeline
<br />in Vineyard Avenue between the Vineyard Booster Station and Bernal
<br />Avenue.
<br />BS-1: Booster Station at Turnout 4 with a firm capacity of 5,200 gallons per
<br />minute.
<br />Long-Term City Distribution Improvements
<br />Alternative 1
<br />Offset GPQ w/ Zone 7
<br />Wholesale Purchases
<br />(Baseline)
<br />Alternative 2
<br />Joint Project with
<br />Zone 7
<br />City Project (3)
<br />(per WSA / WDSCMP)
<br />Alternative 3
<br />City Project
<br />(Revised)
<br />F-1: Replacement of 5,250 LF of existing 12-in main on Stoneridge Drive
<br />(between Johnson Dr. to Foothill Dr.) w/ new 24-inch main. (5 and 7)3,855,600$ 3,855,600$ 3,855,600$ 3,855,600$
<br />F-2: Replacement of 310 LF of existing 12-in main on Foothill Rd w/ new 24-
<br />inch main (5 and 7)226,800$ 226,800$ 226,800$ 226,800$
<br /> F-3: 3,100 linear feet of new 12-inch diameter main on Valley Avenue from
<br />Pleasanton Avenue to Sunol Boulevard. This main is required with the
<br />construction of a new City well at Bernal Park. (3)
<br />1,436,400$
<br />F-4: 975 linear feet of new 12-inch diameter main on Oak Vista Way from
<br />Cotton Mill Way to Valley Avenue. This main is required with the
<br />construction of a new City well at Bernal Park. (3)
<br />453,600$
<br />F-5: 2,300 linear feet of new 16-inch diameter main on Hansen Drive
<br />between Del Prado Well to Valley Avenue. This main is required with the
<br />construction of a new City well at Del Prado Park. (3)
<br />1,285,200$
<br />F-6: 3,800 LF of 16" Main on Vineyard Ave. from Bernal to First St.(5)2,116,800$ 2,116,800$
<br />F-7: 3,450 LF of 16" Main on First St from Vineyard Ave to Bernal (5 and 7)1,922,400$ 1,922,400$ 1,922,400$
<br />F-8: 2,250 LF of 12" Main on Hansen Dr from Hopyard Rd to Valley Ave.
<br />This main is required with the construction of a new City Well at Hansen
<br />Park.(7)
<br />1,047,600$
<br />TO-8: New Turnout No. 8 at Vineyard Ave. and Bernel Ave.(6)TBD TBD
<br />Subtotal TBD TBD 7,257,600$ 7,052,400$
<br />Notes:
<br />7 - Refer to GW Supply Alternatives Hydraulic Analysis, 2025 by Akel (Alt 1B/2B) for description of improvements and basis of cost estimate. Note costs shown here are
<br />increased by 8% to escalate from 2023 to 2025.
<br />6 - Refer to GW Supply Alternatives Hydraluic Analysis, 2025 by Akel (Alt 1A/2A) for description of improvements. Refer to Evaluation of GW Supply Alternatives from Bernal
<br />Subbasin, 2026 by Carollo for basis of cost estimate. Note costs shown here are in 2025 dollars.
<br />Completed or Under Construction (applicable to all alternatives)
<br />Completed or Under Construction (applicable to all alternatives)
<br />Completed or Under Construction (applicable to all alternatives)
<br />1 - City does not build any groundwater improvements and instead offsets the loss of its GPQ by purchasing water from Zone 7 at the wholesale rate. Zone 7 delivers water to
<br />City via existing transmission system and turnouts. This is the interim arrangement for City and represents baseline conditions.
<br />3 - City builds, owns, and operates new wells to recover the use of its GPQ. The park locations of Bernal and Del Prado have since be found to not be feasible making this
<br />alternative no longer recommended. Refer to Water Supply Alternative Study, 2023 by Brown & Caldwell (Alternative 3) for description of groundwater supply facilities and basis
<br />of cost estimate. Note cost shown here excludes the "Infrastructure Improvements" line item and is increased by 4% to escalate from 2024 to 2025 dollars.
<br />Summary of Akel Recommended Distribution Improvements Applicable to Groundwater Supply Project by Alternative
<br />2 - Zone 7 and City jointly construct new groundwater facilities for both regional use and for City to recover GPQ. Zone 7 operates facilities and delivers City GPQ via existing
<br />transmission system and turnouts. Refer to Regional GW Facilities Project Feasibility Study, 2025 by LSCE for description of groundwater supply facilities and basis of cost
<br />estimate. Note cost shown here reflects City cost share and is in 2025 dollars.
<br />4 - City builds, owns and operates new wells to recover the use of its GPQ at Tennis Park and Hansen Park. Refer to Evaluation of GW Supply Alternatives from Bernal
<br />Subbasin, 2026 by Carollo for description of groundwater supply facitlies and basis of cost estimate. Note that costs shown are in 2025 dollars.
<br />5 - Refer to GW Supply Alternatives Hydraulic Analysis, 2025 by Akel (Alt 1A/2A) for description of improvements and basis of cost estimate. Note costs shown here are
<br />increased by 8% to escalate from 2023 to 2025.
<br />Completed or Under Construction (applicable to all alternatives)
<br />Completed or Under Construction (applicable to all alternatives)
<br />Completed or Under Construction (applicable to all alternatives)
<br />Docusign Envelope ID: A2CEC78C-F0FD-4D4D-9F39-237EDFC2492E
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