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*Chambers must be certified to [http://shop.csa.ca/en/canada/plumbing-products-and-materials/b184-series-11-r2015/invt/27032382011 CSA B184 SERIES-11 (R2015)] "Polymeric subsurface stormwater management structures".
*Chambers shall meet the requirements of:
**[https://www.astm.org/Standards/F2418.htm ASTM F2418-16a] “Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers”.
**[https://www.astm.org/Standards/F2787.htm ASTM F2787-13] “Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers”.