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Existing Buildings | v2009

Rainwater management

SSc2 | Possible 3 points

Intent

To reduce runoff volume and improve water quality by replicating the natural hydrology and water balance of the site, based on historical conditions and undeveloped ecosystems in the region.

Requirements

Establishment

Use low-impact development (LID) practices to capture and treat water from 25% of the impervious surfaces for the 95th percentile storm event.

Establish and implement an annual inspection program of all rainwater management facilities to confirm continued performance.

Performance

Document the annual inspections, including identification of areas of erosion, maintenance needs, and repairs. Perform necessary maintenance, repairs, or stabilization within 60 days of inspection.

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