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Engineers, Builders & Contractors :: Commercial Building Plan Requirements

Grease Interceptors Requirements

Backflow “Premise Isolation” Requirements

Backflow Specifications

[PDF] [DWG] Premise Isolation RPZ BPA 3/4” to 2″ – Indoor
[PDF] [DWG] Premise Isolation RPZ BPA  2 1/2″ to 12″ – Outdoor
[PDF] [DWG] Premise Isolation RPZ BPA  2 1/2″ to 12″ – Outdoor Small
[PDF] [DWG] Irrigation/Premise Isolation  3/4” to 2″ BPA
[PDF] [DWG] Above ground BPA Site Placement – Property Line
[PDF] [DWG] Above ground BPA Site Placement – Building Line

Internal backflow is handled by Community Development and Planning. For questions about internal backflow call 817-459-6684.