OAR 340-073-0050
Distribution Boxes, Drop Boxes, and Diversion Valves: Dosing Tanks

(1)

Dosing tanks must meet the standards described in OAR 340-073-0025 (Tank Construction), except as otherwise allowed in this rule.

(2)

Each dosing tank employing one or more pumps must have a minimum liquid capacity equal to the projected daily sewage flow for flows up to 1,200 gallons per day. The department will determine tank sizing for dosing tanks with projected daily sewage flows greater than 1,200 gallons per day. The liquid capacity of dosing tanks must be as measured from the invert elevation of the inlet fitting.

(3)

Each dosing tank must be provided with a service access manhole having a minimum horizontal measurement of 18 inches.

(4)

Each dosing tank proposed to serve a commercial facility containing more than one pump or siphon must be provided with at least one service access manhole that provides adequate space to construct, install, service, and operate the equipment in accordance with the requirements of OAR 340, divisions 071 and 073.

(5)

The installation manual described in OAR 340-073-0025 (Tank Construction)(13) must include additional information about siphon selection, installation of the pump or siphon screen, pump control and alarm levels, and the watertight pass-through methods for electric wiring and pipe.

(6)

Dosing tanks with siphons must be designed and sized for each specific project. The tank manufacturer must specify the type or model of siphon, screen, and related apparatus that are compatible with each dosing tank.

(7)

The inlet fitting must extend below the lowest operating level of the pump or siphon.

Source: Rule 340-073-0050 — Distribution Boxes, Drop Boxes, and Diversion Valves: Dosing Tanks, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-073-0050.

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 340-073-0050’s source at or​.us