The General Assembly’s Quarries Working Group has released a quality control plan in the wake of damage caused to the foundation of homes in Connecticut.
A report by Lexington Herald Leader says the concrete has been deteriorating due to an iron sulphide called pyrrhotite that has been traced to a quarry in Willington.
Sen. Saud Anwar, D-South Windsor, a working group member, is quoted as saying: “This report helps give guidelines and direction to the numerous individuals working to assist those impacted by concrete foundations.”
The plan is calling on quarry operators producing concrete aggregate to provide geological source reports to the Connecticut State Geologist. A certified geologist would prepare these reports and document the mining, processing, storage and quality control methods used by an aggregate producer.
It also recommends aggregate is tested to measure sulfur content in a quarry and determine the existence of pyrrhotite. Aggregate could be approved for use for four years depending on the amount identified or require additional testing.
Additionally, task force members have determined the workforce of contractors helping homeowners with repairs while also addressing a potential increase in demand in the future.