Pinto Lake, California 

HAB’s productivity remained steady and high. The crew took advantage of favorable lake conditions by working into the evening to apply 25,000 gallons of alum to a 65-acre section of the application zone. The application project is now about 70% complete and we remain ahead of schedule. Although the project is not near to Cedar…

Wind

HAB had another productive day and applied 26,000 gallons of alum to 61 acre section of Cedar Lake. High winds can cause the alum floc to drift out of the intended application zone and reduce the effectiveness of the project. They can also create unsafe working conditions for our application crew and barge. Therefore, HAB…

Alum Floc

HAB has passed the halfway mark of the Cedar Lake alum application project! 18,000 gallons of alum were applied to a 49 acre zone to bring the total applied to date to 149,000 gallons over a 359 acre portion of the lake. The key to a successful alum application is the formation of the floc…

Bald Eagle Lake, MN

Today HAB again worked on the south end of the lake and applied 21,600 gallons of alum over a 52 acre zone.  The operation continues to run smoothly and we are nearing the half way point of the project. In addition to the updates on progress at Cedar Lake, we would like to highlight other…

Environmental Testing

HAB made longer application runs to the far south end of Cedar Lake today and applied 26,500 gallons of alum to a 59 acre zone.  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 it’s known safety.  In…

Precise Alum Application

HAB had another productive day and applied over 30,000 gallons of alum to 72 acres of the lake.  Although reported wind speeds at the nearby New Richmond airport reached 18 mph in the afternoon, we adjusted our application plan to work in calm waters along the sheltered west shore where winds were 3-7 mph on…

Demonstration Day 2017

Today marked the first full day of application and the lake was busy with many visitors and observers.  Over 39,000 gallons of alum was applied to a 90 acre portion of the lake and the project is off to a very smooth start.  A group of around 30 people gathered in the afternoon to participate…

Mobilization 2017

HAB spent the first day of the project preparing equipment for the application.  This included assembly of the barge’s application boom, programming the barge’s computerized dosing system, launching the barge into the lake, setting up on-shore storage tanks and confirming the delivery plan for the alum.  The lake and boat launch will remain open for…

Cedar Lake Project Description 2017

Cedar Lake is a 1,118-acre recreational lake near Star Prairie, WI with a maximum depth of 34 feet.  Cedar Lake has been on the Wisconsin list of impaired waters since 1998 because of high total phosphorus levels.  The lake is eutrophic to hypereutrophic with summer algae blooms that result in odors and unsightly build-up of algae…

Algae, Phosphorus, and How Alum Can Help

What are Algae? Algae are microscopic, free-floating organisms that are commonly found in lakes. They are similar to terrestrial plants in that they also require sunlight and nutrients to grow. Algae are the important base of the aquatic food web that ultimately supports juvenile and adult fish. However, the excessive growth of undesirable types of…