Pinto Lake Coverage Map

HAB has downloaded and 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 application.  We are extremely pleased with the precise application and uniform coverage of the application zones.  There are no significant…

Day 8 – April 10th

Today the Pinto Lake alum application project was completed ahead of schedule!  As planned, the exact dose of over 118,000 gallons of alum and buffer were applied in a precise, uniform…and most importantly…safe manner.  There is no greater measure of success than safety and Pinto marks HAB’s 55th project without a safety incident.  A special…

Day 7 – April 9th

HAB’s productivity has been high the last few days and we are slightly ahead of the remaining alum truck deliveries.  We applied 18,0000 gallons of alum and buffer to a 29 acre section of the lake before ending our workday at little early this afternoon.  This allowed us time to accept an invitation from a…

Day 6 – April 8th

HAB applied over 20,000 gallons of alum and buffer to a 32 acre section of lake and we have now completed 75% of the total application. We also spent time this afternoon conducting our daily chemical and environmental testing of the lake water. Alum is widely used in lakes and the drinking/wastewater treatment industry due…

Day 5 – April 7th

HAB worked through more cool and rainy weather today to apply over 24,000 gallons of alum and buffer to nearly 39 acres of the lake.  HAB’s application equipment is well-suited for the precision required for the Pinto Lake restoration project.  Any gaps in coverage would allow for phosphorus from untreated lakebed sediments to leach into…

Day 4 – April 6th

This morning we provided a tour of the alum application operation and an overview of the project goals to numerous community and agency visitors. It is great to see so much interest in getting Pinto Lake’s water quality back to acceptable conditions available for the community to use. We also received a tour of the…

Day 3 – April 5th

Today marked the first full day of application and the lake was busy with many visitors and observers. Over 19,000 gallons of alum and buffer were applied to a 39 acre portion of the lake and the project is off to a very smooth start. A group of over 50 students from the University of Liverpool in…

Day 2 – April 4th

Day 2 of the Pinto Lake project was very productive for HAB.  The final two storage tanks were placed in the staging area.  A fence was installed around the staging area to keep the park users at a safe distance from the alum storage and barge filling locations.  Final calibrations of the barge computer system…

Day 1 – April 3rd

HAB spent day one of the project preparing equipment for the application.  This included assembly of the barge’s application boom, programing 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 and buffer.  The lake will remain open for approved uses…

Pinto Lake Project Description

Pinto Lake is a 120 acre recreational lake in Watsonville, CA.  The lake develops massive algal blooms every later summer and fall and algal toxin levels typically exceed the State health criteria.  As a result, the lake is classified as “impaired” and is closed for contact recreation during the bloom periods.  Of particular interest, the…