OAR 340-071-0150
Site Evaluation Procedures

(1) A site evaluation is the first step in the process of obtaining a construction-installation permit for an onsite system. Except as otherwise provided in these rules, before obtaining a permit to construct an onsite system, a person must obtain a site evaluation report finding the site suitable for an onsite system under this division.
(2) Completed applications for site evaluations must be submitted to the agent with all required exhibits and the applicable site evaluation fee in OAR 340-071-0140 (Onsite System Fees)(2).
(a) Unless DEQ approves other procedures for a contract county, applicants must provide at least two test pits, with dimensions and configuration as the agent directs, located approximately 75 feet apart and within the area of the proposed system, including the repair/replacement area.
(b) The fee paid for a site evaluation report covers as many site inspections within ninety days of the initial inspection as necessary to determine the suitability of a single lot or parcel for a single system. A site is considered to be suitable as soon as it is found to meet the criteria for any type of onsite system.
(3) Site evaluation report.
(a) The agent or, for WPCF permits, an agent or a qualified private contractor, must evaluate the site of the proposed system, consider all system options, and provide a report of such evaluation.
(b) The site evaluation report must be on a DEQ-approved form.
(c) The report must contain, at a minimum, a site diagram and observations of the following site characteristics:
(A) Parcel size;
(B) Slope in absorption field and replacement areas (percent and direction);
(C) Surface streams, springs, other bodies of water;
(D) Existing and proposed wells;
(E) Escarpments;
(F) Cuts and fills;
(G) Unstable landforms;
(H) Soil profiles determined from test pits provided by applicant;
(I) Water table levels as indicated by conditions associated with saturation or water table observations;
(J) Useable area for initial and replacement absorption areas;
(K) Encumbrances observed or listed on the application;
(L) Sewerage availability;
(M) Other observations including off-site features as appropriate.
(d) Site evaluation reports for subdivisions or other land divisions must be based on an evaluation of each lot.
(e) Specific conditions or limitations imposed on an approved site must be listed on the evaluation report.
(f) A site evaluation report approving a site for a system qualifies the property owner for a permit to construct a system on that property if other requirements for a permit are met.
(4) Approval or denial:
(a) A site must be approved for a system if the site evaluation report documents the following:
(A) The site evaluation report identifies the types of the initial and replacement systems for which the site is approved.
(B) All criteria for approving a specific type or types of systems, as described in this division are satisfied.
(C) Each lot or parcel has sufficient usable area available to accommodate an initial and replacement system. The usable area may be located within the lot or parcel or within the bounds of another lot or parcel that is secured under OAR 340-071-0130 (General Standards, Prohibitions and Requirements)(11). The initial and replacement systems may be of different types, e.g., a standard subsurface system as the initial system and an alternative system as the replacement system. The site evaluation report must indicate the types of the initial and replacement systems for which the site is approved.
(D) A replacement area is not required in areas under control of a legal entity such as a city, county, or sanitary district if the legal entity gives a written commitment that sewerage service will be provided within five years.
(b) A site must be denied if the conditions identified in section (4)(a) of this rule are not met.
(c) Changes in technical requirements in this division may not invalidate a site approval but may require design changes or use of a different type of system.
(5) Site evaluation report review. An applicant may request DEQ to review an agent’s site evaluation report. The application for review must be submitted to DEQ in writing within 60 days after the site evaluation report issue date and must include the site evaluation review fee in OAR 340-071-0140 (Onsite System Fees)(2). DEQ will review and approve or disapprove the site evaluation report.

Source: Rule 340-071-0150 — Site Evaluation Procedures, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-071-0150.

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 340-071-0150’s source at or​.us