OAR 690-210-0250
Top Terminal Height

(1)

The casing head or pitless unit of any well shall extend a minimum of 12 inches above the finished ground surface or pumphouse floor, and a minimum of 12 inches above the local surface runoff level. The ground surface immediately surrounding the top of the well casing or pitless unit should be graded so as to drain surface water away from the well. Without permission of the Director, no casing shall be cut off below land surface except to install a pitless unit or during permanent abandonment of a well.

(2)

Application to the Director to reduce the top terminal height of casing shall include:

(a)

A description of physical characteristics of the well site which make the requested change necessary; and

(b)

A description of additional steps to be taken over and above the minimum standards in these rules which will assure adequate protection of the ground water resource.

(3)

The Director may approve a reduction of the top terminal height of the casing only upon a determination that the additional precautions to be taken and specific physical characteristics of the site would prevent contamination of the ground water resource.

Source: Rule 690-210-0250 — Top Terminal Height, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=690-210-0250.

690‑210‑0005
Standards Apply to all Methods of Well Construction 690‑210‑0030
Placement of Water Supply Wells 690‑210‑0060
Explosives 690‑210‑0065
Hydrofracturing 690‑210‑0070
Injection Wells 690‑210‑0100
Mineralized or Contaminated Groundwater 690‑210‑0130
Sealing of Wells in Unconsolidated Formations Without Significant Clay Beds 690‑210‑0140
Sealing of Water Supply Wells in Unconsolidated Formations with Significant Clay Beds 690‑210‑0150
Sealing of Water Supply Wells in Consolidated Formations 690‑210‑0155
Additional Standards for Artesian Water Supply Wells 690‑210‑0160
Additional Standards for Filter Pack Wells with Surface Casing 690‑210‑0170
Additional Standards for Filter Pack Wells without Surface Casing 690‑210‑0180
Additional Standards for Driven or Jetted Wells 690‑210‑0190
Steel Casing 690‑210‑0200
Steel Casing Joints 690‑210‑0210
Plastic Casing 690‑210‑0220
Plastic Casing Joints 690‑210‑0230
Inner Casing 690‑210‑0240
Casing Shall be Centered 690‑210‑0250
Top Terminal Height 690‑210‑0260
Openings in the Casing 690‑210‑0270
Pitless Well Adapters and Units 690‑210‑0280
Access Ports, Dedicated Measuring Tubes and Airlines 690‑210‑0290
Liner Pipe 690‑210‑0300
Drill Cuttings or Chips 690‑210‑0310
Cement Grout 690‑210‑0315
Concrete 690‑210‑0320
Methods of Placement of Cement Grout or Concrete 690‑210‑0330
Unhydrated Bentonite 690‑210‑0340
Method of Placement of Unhydrated Bentonite 690‑210‑0350
Resumption of Construction Following Placement of Cement Grout 690‑210‑0360
Movement of Casing after Cement Grouting 690‑210‑0370
Well Test 690‑210‑0380
Disinfection of a Well 690‑210‑0390
Completion of Wells 690‑210‑0400
Construction of Dug Wells 690‑210‑0410
Buried Slab Construction 690‑210‑0420
Surface Curbing
Last Updated

Jun. 8, 2021

Rule 690-210-0250’s source at or​.us