OAR 690-210-0310
Cement Grout

When using cement grout as the sealing material in a well, it must meet the following requirements:

(1)

Cement grout used to seal a well shall be composed of a uniformly mixed slurry of Portland cement or High Early Strength Type III Portland cement and potable water, or High-alumina cement and potable water, mixed in the following proportions (Type of Cement — Gallons of Water Per Sack of Dry Cement, respectively):

(a)

Portland Cement — 4-1⁄2 to 6;

(b)

High Early Strength Type III Portland Cement — 5-1⁄2 to 6-1⁄2;

(c)

High-alumina Cement — 4-1⁄2 to 6.

(2)

Additives to increase fluidity, reduce shrinkage, or control time of set may be used in a cement grout mixture. Expanding agents such as aluminum powder may be used at a rate not exceeding 0.075 ounce (one level teaspoonful) per sack of dry cement. The powder shall not contain polishing agents. The addition of bentonite clay to a cement grout mixture is permissible but shall not in any case exceed five percent (5%) by weight of dry cement. Calcium chloride may be added to a Portland cement grout to accelerate the set but shall not exceed two pounds per sack of dry cement. High-alumina cement and Portland cement of any type shall not be mixed together for use in a well.

(3)

Cement types other than those set forth herein shall not be used as a sealing material in a well except upon written approval of the Director of the Water Resources Department.

(4)

In no case shall sand or aggregate be added to cement grout seal mixtures.

(5)

The volume of sealing material required shall be calculated prior to seal installation. The calculated volume and actual volume used shall be reported on the water supply well report.

Source: Rule 690-210-0310 — Cement Grout, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=690-210-0310.

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 690-210-0310’s source at or​.us