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Clayton reviews lot-coverage and stormwater policy; consultant recommends stronger technical standards and maintenance reporting
Summary
City staff and consultants recommended shifting to clearer green-space minimums, raising storm-event design standards (to a 100-year, 60-minute event for certain calculations), requiring percolation tests for dry wells, and creating standardized maintenance reporting for BMPs; board asked for real-world examples and further draft code language.
Clayton planning staff and consultant Intuition & Logic presented a set of technical recommendations to update the city's lot-coverage and stormwater rules during the May 5 ARB meeting. The consultants advised separating green-space ratios (neighborhood character) from impervious-runoff calculations (stormwater mitigation) and strengthening technical requirements for new development.
Key consultant recommendations included increasing the storm-event standard used for runoff/detention calculations from the previously used 15-year, 20-minute event to a 100-year, 60-minute…
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