OAR 340-071-0325
Gray Water Waste Disposal Sumps

(1)

Criteria for approval.

(a)

Hand-carried graywater may be disposed of in graywater waste disposal sumps that serve facilities, including but not limited to recreation parks, camp sites, or construction sites, if the projected daily graywater flow does not exceed 10 gallons per unit. Graywater or other sewage may not be piped to the graywater waste disposal sump. Where projected daily sewage flow exceeds 10 gallons per unit, graywater must be disposed of in facilities meeting requirements of OAR 340-071-0320 (Split Waste Method)(2).

(b)

Graywater sumps may be used where the agent determines they will not create a nuisance or public health hazard.

(c)

Up to four graywater waste disposal sumps may be constructed on the same property and at the same time for each construction permit. The sumps must meet minimum separation distances in Table 8.

(2)

In campgrounds or other public use areas, graywater waste disposal sumps must be identified as “sink waste disposal” by placard or sign in letters at least 3 inches in height and in a color contrasting with the background.

(3)

Design and construction details for the graywater waste disposal sumps must be submitted with the permit application. At a minimum, the sump design concepts must include a receiving chamber with screen, settling chamber with tee fitting that extends about a third of the depth of the clear zone, and an absorption facility. The absorption facility may be a shallow seepage chamber or absorption trench, depending on site conditions or other considerations.

Source: Rule 340-071-0325 — Gray Water Waste Disposal Sumps, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-071-0325.

340–071–0100
Definitions 340–071–0110
Purpose 340–071–0115
Technical Review Committee 340–071–0120
Jurisdiction and Policy 340–071–0130
General Standards, Prohibitions and Requirements 340–071–0135
Approval of New or Innovative Technologies, Materials, or Designs for Onsite Systems 340–071–0140
Onsite System Fees 340–071–0150
Site Evaluation Procedures 340–071–0155
Existing System Evaluation Report 340–071–0160
Permit Application Procedures — Construction, Installation, Alteration, and Repair Permits 340–071–0162
Permit Application Procedures — WPCF Permits 340–071–0165
Permit Denial Review — Construction-Installation, Repair, Alteration Permits 340–071–0170
Pre-Cover Inspections 340–071–0175
Certificate of Satisfactory Completion 340–071–0185
Decommissioning of Systems 340–071–0200
Prior Construction Permits or Approvals 340–071–0205
Authorization to Use Existing Systems 340–071–0210
Alteration of Existing Onsite Wastewater Treatment Systems 340–071–0215
Repair of Existing Systems 340–071–0220
Standard Subsurface Systems 340–071–0260
Alternative Systems, General 340–071–0265
Capping Fills 340–071–0275
Pressurized Distribution Systems 340–071–0280
Seepage Trench System 340–071–0285
Redundant Systems 340–071–0290
Conventional Sand Filter Systems 340–071–0295
Conventional Sand Filter Design and Construction 340–071–0302
Recirculating Gravel Filter (RGF) 340–071–0310
Steep Slope Systems 340–071–0315
Tile Dewatering System 340–071–0320
Split Waste Method 340–071–0325
Gray Water Waste Disposal Sumps 340–071–0330
Nonwater-Carried Systems 340–071–0335
Cesspools and Seepage Pits 340–071–0340
Holding Tanks 340–071–0345
Alternative Treatment Technologies (ATTs) 340–071–0360
Absorption Trenches in Saprolite 340–071–0400
Geographic Area Special Considerations. 340–071–0410
Rural Area Consideration 340–071–0415
For Cause Variances 340–071–0420
Hardship Variances 340–071–0425
Variance Officers 340–071–0430
Variance Hearings and Decisions 340–071–0435
Variance Permit Issuance, Inspections, Certificate of Satisfactory Completion 340–071–0440
Variance Appeals 340–071–0445
Variance Administrative Review 340–071–0460
Moratorium Areas 340–071–0500
Community Systems 340–071–0520
Large Systems 340–071–0600
Sewage Disposal Service Licenses 340–071–0650
Training and Certification Requirements for System Installers and Maintenance Providers 340–071–0800
Tables
Last Updated

Jun. 8, 2021

Rule 340-071-0325’s source at or​.us