§ 492.16. Stormwater Management and Rainwater Retention.
23 CA ADC § 492.16Barclays Official California Code of Regulations
23 CCR § 492.16
§ 492.16. Stormwater Management and Rainwater Retention.
(a) Stormwater management practices minimize runoff and increase infiltration which recharges groundwater and improves water quality. Implementing stormwater best management practices into the landscape and grading design plans to minimize runoff and to increase on-site rainwater retention and infiltration are encouraged.
(d) It is strongly recommended that landscape areas be designed for capture and infiltration capacity that is sufficient to prevent runoff from impervious surfaces (i.e. roof and paved areas) from either: the one inch, 24-hour rain event or (2) the 85th percentile, 24-hour rain event, and/or additional capacity as required by any applicable local, regional, state or federal regulation.
• Grade impervious surfaces, such as driveways, during construction to drain to vegetated areas.
• Minimize the area of impervious surfaces such as paved areas, roof and concrete driveways.
• Incorporate pervious or porous surfaces (e.g., gravel, permeable pavers or blocks, pervious or porous concrete) that minimize runoff.
• Direct runoff from paved surfaces and roof areas into planting beds or landscaped areas to maximize site water capture and reuse.
• Incorporate rain gardens, cisterns, and other rain harvesting or catchment systems.
• Incorporate infiltration beds, swales, basins and drywells to capture storm water and dry weather runoff and increase percolation into the soil.
• Consider constructed wetlands and ponds that retain water, equalize excess flow, and filter pollutants.
Credits
Note: Authority cited: Section 65595, Government Code; and sections 11 and 30, Governor's Exec. Order No. B-29-15 (April 1, 2015). Reference: Section 65596, Government Code; and section 11, Governor's Exec. Order No. B-29-15 (April 1, 2015).
History
1. New section filed 9-10-2009; operative 9-10-2009 pursuant to Government Code section 11343.4 (Register 2009, No. 37).
2. Renumbering of former section 492.16 to section 492.17 and renumbering of former section 492.15 to new section 492.16, including amendment of section heading, section and Note, filed 9-15-2015; operative 9-15-2015. Exempt from OAL review and submitted to OAL for printing only pursuant to Governor's Executive Order No. B-29-15 (4-1-2015) (Register 2015, No. 38).
This database is current through 9/15/23 Register 2023, No. 37.
Cal. Admin. Code tit. 23, § 492.16, 23 CA ADC § 492.16
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