Spring Lake Coverage Map

HAB has downloaded and processed the alum application data from the barge’s guidance and dose control computer system.  The coverage map shows each individual application path that was recorded over the course of the Spring Lake application.  We are extremely pleased with the precise application and uniform coverage of the application zones.  There are no…

Project Completion

Today the Spring Lake alum application project was completed on schedule!  As planned, the exact dose of 146,000 gallons of alum was applied in a precise, uniform, and most importantly, safe manner.  There is no greater measure of success than safety and Spring Lake marks HAB’s 73rd project without a safety incident.  A special thanks…

Environmental Testing

HAB enjoyed a sunny day and productivity remained high as we near the completion of the Spring Lake alum application.  We are on-schedule to finish tomorrow (Saturday). We also spent time conducting our daily environmental testing of the lake water. Alum is widely used in lakes and the drinking/wastewater treatment industry due to its known…

Pinto Lake, California 

HAB’s productivity remained steady and high at Spring Lake. The application project is now about 70% complete and we remain right on schedule. Although the project is not close to Spring Lake, the story of our alum application project at Pinto Lake is an interesting one to share. The application was conducted to remove toxic…

Alum Floc

HAB reached the halfway mark of the Spring Lake alum application project today!  The key to a successful alum application is the formation of the floc and the precise placement of the floc on the lakebed. The floc is formed when the liquid alum mixes with lake water immediately after application. It is a whitish-green…

Project Details

HAB enjoyed some beautiful Minnesota weather today and had another productive day of alum application!  We are still receiving tons of interest and support and we thought we would provide some of the requested project details.  Barr Engineering previously determined that a total dose of 584,000 gallons of alum was needed to inactivate the phosphorus…

Project Demonstration Day

In addition to kicking off the alum application project today, the lake was busy with many visitors and observers. A group gathered Monday afternoon to participate in the Spring Lake Alum Demonstration Day. Participants were able to observe and learn more about the plan and goals for the lake restoration project. Dr. John Holz (HAB)…

Equipment Mobilization and First Day of Application!

HAB spent Sunday afternoon and Monday morning preparing equipment for the Spring Lake alum application project. This included assembly of the barge’s application boom, launching the barge into the lake, setting up on-shore storage tanks and confirming the delivery plan for the alum. A construction fence was installed around the staging area to keep lake…

Spring Lake Demo Day

The Spring Lake alum application is scheduled to begin and we invite anyone who is interested in seeing the operation in person, to please join us at the Spring Lake boat launch (2025 Lakeview Drive, Jordan) on Monday, May 21st at 2pm.  We will be giving a brief demonstration and can answer any questions at that time.