OAR 690-240-0046
Grouting of Uncased Boring

(1)

Grouting of an uncased boring shall be completed after the heat exchange loop is installed. The boring shall be completed in a manner to allow ease in locating including but not limited to the use of marking or locating magnetic tape if maintenance or abandonment is necessary The area near land surface where the ground source heat pump boring will be connected to a manifold or to the closed loop system may be filled with earth materials.

(2)

Sealing shall be completed using active solids content bentonite grout slurry (minimum 20% active solids by weight) or high solids fluid mixture of cement. Controlled density fill (CDF), fly ash, drill cuttings or drilling fluids shall not be used in grouting the uncased boring.

(3)

Mixes of bentonite or cement slurry shall be installed by pumping through a grout pipe in a continuous operation from the bottom of the boring upward. The grout pipe shall extend the full depth of the borehole before pumping begins. Minimum slurry volume used shall be equal to or exceed the calculated annulus volume in the borehole. Grouting material shall surround all pipes remaining in the borehole.

(4)

The quality of the water in the boring shall not interfere with the proper hydration of bentonite.

Source: Rule 690-240-0046 — Grouting of Uncased Boring, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=690-240-0046.

690‑240‑0005
Introduction 690‑240‑0006
Special Standards 690‑240‑0007
Special Area Standards 690‑240‑0010
Definitions 690‑240‑0011
Organic Materials 690‑240‑0012
Public Safety 690‑240‑0013
Wells Cannot Be Used for Disposal of Contaminants 690‑240‑0014
Water Used Must be Potable 690‑240‑0015
Delegation of Responsibility for Monitoring Wells, Geotechnical Holes and Other Holes 690‑240‑0016
Unattended Wells 690‑240‑0020
Delegation Conditions 690‑240‑0024
Well Identification Label 690‑240‑0026
Well Identification Label Maintenance 690‑240‑0030
Other Holes: General Performance and Responsibility Requirements 690‑240‑0035
Geotechnical Holes: General Performance and Responsibility Requirements 690‑240‑0040
Closed Loop Ground Source Heat Pump Boring — General Requirements 690‑240‑0043
Construction Standards 690‑240‑0046
Grouting of Uncased Boring 690‑240‑0049
Reporting Requirements 690‑240‑0055
License Required to Construct Monitoring Wells 690‑240‑0060
Monitoring Well Constructor License Examination 690‑240‑0065
Monitoring Well Constructor License, Experience Requirements and Trainee Card 690‑240‑0070
Terms of Monitoring Well Constructor License and License Fees 690‑240‑0200
Continuing Education Committee 690‑240‑0210
Continuing Education Requirement 690‑240‑0220
Documentation 690‑240‑0240
Approved Course List/Course Approval and Assignment of CECs 690‑240‑0250
Course Sponsor Requirements 690‑240‑0260
Loss of Approval 690‑240‑0270
Courses Taken Without Prior Approval 690‑240‑0280
Waivers 690‑240‑0320
Contracting for Services 690‑240‑0330
Monitoring Well Constructor and Landowner Well Bonds or Letters of Credit 690‑240‑0340
Landowner Well Construction Permit, Fee and Bond 690‑240‑0355
Monitoring Well Drilling Machines 690‑240‑0375
Monitoring Well Construction Notice Required (Start Card) 690‑240‑0385
Start Card Reporting Requirements 690‑240‑0395
Monitoring Well Report Required (Monitoring Well Log) 690‑240‑0410
Monitoring Well Construction: General 690‑240‑0420
Well Protection 690‑240‑0430
Casing 690‑240‑0440
Additional Standards for Artesian Monitoring Wells 690‑240‑0450
Cleaning 690‑240‑0460
Monitoring Well Screen, Filter Pack, and Filter Pack Seal 690‑240‑0475
Well Seals 690‑240‑0485
Monitoring Well Development 690‑240‑0500
Completion of Monitoring Wells 690‑240‑0510
Abandonment of Monitoring Wells 690‑240‑0525
Piezometers 690‑240‑0540
Direct Push Monitoring Wells and Piezometers 690‑240‑0550
Evidence of Failure 690‑240‑0560
Investigation of Alleged Violations 690‑240‑0580
Enforcement Actions 690‑240‑0590
Multiple Violations and Consolidation of Proceedings 690‑240‑0600
Factors Affecting Selection of Type and Degree of Enforcement 690‑240‑0610
Change in Enforcement Status 690‑240‑0630
Assessment of Civil Penalties 690‑240‑0640
Schedule of Civil Penalties
Last Updated

Jun. 8, 2021

Rule 690-240-0046’s source at or​.us