Stormwater Symposium

Oral

397824 - Adapting LID/DI Design Specifications for a Remote Island (there is no sandy loam in New Zealand)

Monday, June 4
10:30 AM - 12:00 PM
Location: Greenway AB

To promote LID/GI implementation in Auckland, New Zealand, the stormwater unit of the regulatory agency embarked upon several initiatives to adapt overseas’ design manuals to the local context. NZ has different challenges than the usual focus in the USA. Zinc and copper are the primary pollutants of concern, receiving environments are predominantly marine coasts, and the natural resources available for creating engineered media differ – a survey of media suppliers showed that no one knows what “sandy loam” is. To adapt, rather than adopt design guidance, applied research projects were pursued to identify locally-relevant stormwater management goals, build LID installations, perform field monitoring to document performance under local conditions, and solve practical issues such as how to procure suitable materials. These projects set realistic expectations for performance, provided scientific evidence to support policy, and made technologies “accessible” to the local design community. Publically available reports and/or procedures were compiled on green roofs, permeable pavement, bioretention, floating treatment wetlands, setting up testing protocols for proprietary devices for performance “certification,” and establishing performance targets for LID systems. Unfortunately, the loss of champions in local government has recently slowed progress in enabling LID/GI implementation.

Send Email for Elizabeth Fassman-Beck


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397824 - Adapting LID/DI Design Specifications for a Remote Island (there is no sandy loam in New Zealand)



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