KCBS_740 SAN FRANCISCO (KCBS) — The development company that’s in the middle of a controversy over its sinking high rise in San Francisco is re-drawing its foundation plan for another tower it’s currently building.

KCBS and Chronicle Insider Phil Matier reports in Wednesday’s Matier and Ross column that Millennium Partners – the group behind the Millennium Tower – has altered its building plans for a 45 story condo project at Third and Mission.

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The foundation of that building will now be anchored by concrete piles in bedrock.

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The original plan called for it to be built atop a four story basement garage with no concrete piles.

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Concrete piles were used in the building of the Millennium Tower – but they’re not anchored in bedrock – and the tower has sunk 16 inches and tilted two since its opening.