In October 2022, the U.S. Environmental Protection Agency (EPA) announced $2 million in research grant funding as part of their Lagoon Wastewater Treatment Plan. The grants are one component of the EPA’s Lagoon Wastewater Treatment Action Plan, a broad initiative to assist small, rural, and tribal communities with the utilization of lagoon wastewater systems.

What are the key issues in writing “or-equal” geomembrane specifications?

Part 2. An example of an “or-equal” spec gone bad and how it applies to geomembrane specifications.

Many engineers would argue that geomembranes are only fluid barriers and are not meant to be load bearing in any manner. All loads should be carried by geosynthetic counterparts, such as geotextiles, geogrids, etc., that are placed over and under the geomembrane. However, from a materials and installation standpoint, it is virtually impossible to transmit all load to the adjacent layers. Additionally, it is not usually cost-effective to build a heavily redundant composite system that takes all mechanical bearing off the geomembrane.

Designing Geomembranes in Cold Environments
In this two-part series, we’ll review common cold crack index testing for geomembranes and field failure scenarios under cold conditions.

Two Part Blog:

Part 1: Evaluating Geomembrane Cold Crack Testing Data

Part 2: Five Causes of Cold Weather Geomembrane Failures

Designing Geomembranes in Cold Environments.

In this two-part series, we’ll review common cold crack index testing for geomembranes and field failure scenarios under cold conditions.

Two Part Blog:

Part 1: Evaluating Geomembrane Cold Crack Testing Data

Part 2: Five Causes of Cold Weather Geomembrane Failures

What are the Major Neglected costs in your Geomembrane Installation?

Two Part Blog:

Part 1: 4 Commonly Identified Geomembrane Costs
Part 2: Quantifying Additional Geomembrane Installation Costs

What are the Major Neglected costs in your Geomembrane Installation?

Two Part Blog:

Part 1: 4 Commonly Identified Geomembrane Costs
Part 2: Quantifying Additional Geomembrane Installation Costs