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Below is a list of design guideline documents applicable for advanced subsurface wastewater disposal systems in Wake County.
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Wastewater Disposal System Design Policies (See Section IV of Wake County Regulations)
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Requirements for LPP and pressure manifold design submissions with application for permit
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Sample LTAR calculations for varied length line pressure manifolds
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Spreadsheet of flow rate as a function of pressure head and hole diameter in drilled PVC