Welcome to the
California
Groundwater
Association

Serving the groundwater industry since 1948.

CGA Standard Practices

The Standard Practice Series bridges the uncertainties in California State Standards by clearly defining prudent and standard operating procedures, as practiced in the general groundwater industry. Articles are written to fill gaps in the current regulatory scheme and clarify relevant applications and interpretations of regulations. The series describes accepted responsibilities of competent, licensed groundwater contractors and is not intended as an instruction manual for an untrained person.

CGA standards are recommended by the CSLB as a study guide. To see a specific standard, click on the standard practice title (PDF) in the "adopted standards" table below.

In review

The following two standards are available for a 60-day review and comment period:

Please review each and send any comments you have to info@groundh2o.org.

Adopted standards

Article

Description

100

Definition of Terms

200

Performance "Guarantees" in Well Drilling Specifications

210

Definition of Sand as Used in Sand-Cement Mixtures for Annular Seals

219

Minimum Thickness of Seals within the Annular Space in Wells Having Gravel Feed Pipes

220

Construction of Gravel Feed Pipes in Wells

225

Gravel Pack Materials and Handling

227

Well Development

229

Use of the Liner Method for Strata Seal Off In Well Rehabilitation

230

Sand Discharge in Wells

290

Below Grade Well Head Discharge

295

Well Head Casing Extension

299

Destruction of Water Wells

300

Submersible Pump Sizing (small wells)

302

Submersible Pump Sizing (large wells)

320

Backflow Prevention for Agricultural Wells

400

Drift and Alignment Testing

460

Well Yield Pumping Tests 1-4 Residential Connections

480

Geophysical Well Logging

490

Water Well Test Reporting for Property Transactions

495

Well Yield Pumping Tests For Residential Property Transfers

500

Well Disinfection

510

Corrosion Protection

550

Management of Surface Artesian Flows During Vertical Well Construction

580

Destruction of Test Wells or Exploration Holes

600

Standard for Pozzolan Enhanced Grouts Used in Annular Seals & Well Destruction

Appendix A

Creating, Updating and Amending CGA Standards

Appendix B

Tables and Examples


CALIFORNIA GROUNDWATER ASSOCIATION
1017 L Street, PMB #312, Sacramento, CA 95814-3805
P: 916.231.2134 | E: info@groundh2o.org
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