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*Gravel beds in which exfiltration systems are installed are typically rectangular excavations with a bottom width between 0.6 and 2.4 m <ref>Greater Vancouver Regional District. 2005. Stormwater Source Control Design
 
*Gravel beds in which exfiltration systems are installed are typically rectangular excavations with a bottom width between 0.6 and 2.4 m <ref>Greater Vancouver Regional District. 2005. Stormwater Source Control Design
 
Guidelines 2005. Prepared by Lanarc Consultants Limited, Kerr Wood Leidal Associates Limited and Goya Ngan</ref>.  
 
Guidelines 2005. Prepared by Lanarc Consultants Limited, Kerr Wood Leidal Associates Limited and Goya Ngan</ref>.  
*The gravel beds should have gentle slopes between 0.5 - 1%.
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*The gravel beds should have gentle slopes between 0.5 - 1 %.
 
*Calculate maximum '''[[flow through perforated pipe]]'''
 
*Calculate maximum '''[[flow through perforated pipe]]'''
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===Drawings===
 
===Drawings===
 
Standard details for exfiltration trenches have been produced by City of Kitchener and City of Barrie. See [[Drawings]]
 
Standard details for exfiltration trenches have been produced by City of Kitchener and City of Barrie. See [[Drawings]]
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