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Ohio Administrative Code (OAC) 3745-42-03 – Requirements for applications and engineering plans Interim Onsite Sewage Treatment Systems Guidance Document, Ohio EPA, 2008, Guidance Document No. 4 Sewage: Collection, Treatment and Disposal Where Public Sewers are not Available, Ohio EPA, 1993, Policy No. 0400.001 (a.k.a. "the Greenbook") ................
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