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Unforeseen subsurface work triggers roughly $120,000 change order on tennis‑court project
Summary
Parks staff reported excavation revealed unsuitable soils and a clogged underdrain on lower courts; staff said the work was necessary to avoid recurring failures and will generate a change order of about $120,000 to be presented to the board next week.
Parks staff told the commission that contractors encountered unforeseen subsurface materials and a clogged four‑inch underdrain while preparing tennis‑court subgrade, requiring deeper excavation and suitable backfill to ensure a long‑lasting repair.
"We were about 5, 6 feet deep," Parks staff (S4) said, describing repeated digging to reach suitable soil. Staff said crews also found multiple layers of older tennis‑court material and that an underdrain designed to carry water from the top courts was clogged and not functioning. "It's about a $120,000," S4 said of the change order total.
Staff argued the excavation and drain replacement were necessary to avoid the project returning for the same problem in 5–7 years. "You do this or you give up $25,000,000," S4 said when discussing broader tradeoffs for long‑term durability, adding that the department had contingency funds and the engineer's estimate anticipated unforeseen items.
The commission discussed whether similar issues will appear on adjacent courts and staff said they planned only resurfacing on the upper courts, not full removal. The change order will be forwarded to the board for consideration next week; no formal vote was taken by the commission at this meeting.
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