HIGHLANDS – Members of the San Jacinto River Coalition learned at a meeting last month that major repairs were needed to the northwest corner of the Waste Pits site and its cap.
The meeting was held Tuesday, June 4th at the Community Center. THEA director Jackie Young led a review of the EPA Update meeting that was held May 7th in Highlands, and then brought the group the latest news on work being conducted at the site.
Construction equipment including several cranes, trucks, cement mixers, formwork and a work crew of about 15 can be seen from a safe distance, working on the placement of a new technique known as Articulated Concrete Block Mat or (ACBM).
The EPA is calling this current work “Slope Enhancement” and says it will take about a month to complete. They said that this method has key benefits over the method used before, which was a textile membrane held in place with a rock cover. This method proved to be unstable, and not a reliable method of sealing the waste material. This is the third time that major repairs were required on the cap. Work was also done in July 2018 and November 2018, but this is the first time that the ACBM technique has been used. The cap was constructed in 2011, and has a history of unreliable performance.