OAR 340-073-0040
Distribution Boxes, Drop Boxes, and Diversion Valves: Drop Boxes

(1)

Drop boxes must be constructed of concrete, fiberglass, or other materials acceptable to the department.

(2)

Drop boxes must be constructed of durable, watertight materials resistant to deterioration and be designed to accommodate watertight connections for the effluent sewer and header pipes. The top, walls, and bottom of concrete drop boxes must be at least 1-1⁄2 inches thick. All drop boxes must be able to support an earth load of at least 200 pounds per square foot.

(3)

The inverts of the inlet and overflow port must be at the same elevation. The invert of the header pipe port(s) leading to the absorption trench(es) must be 6 inches below the inlet invert.

(4)

Drop box covers must be marked with the manufacturer’s full business name or number assigned by the department.

(5)

Each manufacturer must provide the department with complete, detailed plans and specifications of the drop box and must certify, in writing, that drop boxes manufactured for use in onsite systems in Oregon will comply with all requirements of this rule. Plans and specifications must be prepared under the supervision of and designed by a professional engineer licensed in accordance with ORS 672.

Source: Rule 340-073-0040 — Distribution Boxes, Drop Boxes, and Diversion Valves: Drop Boxes, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-073-0040.

340‑073‑0025
Tank Construction 340‑073‑0026
Septic Tanks 340‑073‑0030
Dosing Septic Tank 340‑073‑0035
Distribution Boxes, Drop Boxes, and Diversion Valves: Distribution Boxes 340‑073‑0040
Distribution Boxes, Drop Boxes, and Diversion Valves: Drop Boxes 340‑073‑0041
Distribution Boxes, Drop Boxes, and Diversion Valves: Filter Fabric 340‑073‑0045
Distribution Boxes, Drop Boxes, and Diversion Valves: Diversion Valves 340‑073‑0050
Distribution Boxes, Drop Boxes, and Diversion Valves: Dosing Tanks 340‑073‑0055
Distribution Boxes, Drop Boxes, and Diversion Valves: Dosing Assemblies: Effluent Pumps, Controls and Alarms, and Dosing Siphons 340‑073‑0056
Distribution Boxes, Drop Boxes, and Diversion Valves: Effluent Filters 340‑073‑0060
Distribution Boxes, Drop Boxes, and Diversion Valves: Pipe Materials and Construction 340‑073‑0065
Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Privies and Portable Toilet Shelters 340‑073‑0070
Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Unsealed Earth Pits for Privies 340‑073‑0075
Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Self-Contained Nonwater-Carried Toilet Facilities 340‑073‑0080
Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Construction of Gray Water Waste Disposal Sumps 340‑073‑0085
Non-water-Carried Waste Disposal Facilities, Materials, and Construction: Flexible Membrane Liners for Sand Filters Treating Septic Tank Effluent
Last Updated

Jun. 8, 2021

Rule 340-073-0040’s source at or​.us