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NRMCA Releases Report on Chloride Limits for Reinforced Concrete

Article provided by the National Ready Mixed Concrete Association

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The National Ready Mixed Concrete Association in collaboration with Dr. Neal Berke with Tourney Consulting Group has completed a research project titled Evaluation of Chloride Limits for Reinforced Concrete Phase A. The research, conducted at NRMCA and Tourney laboratories, was to establish a relationship between the calculated total (initial) chloride content and the measured water-soluble chloride content in hardened concrete at a later age. The ACI 318 Building Code prescribes limits on water-soluble chlorides for concrete.

DEP Chapter 110 Water Withdrawal Reporting Due

Article by Josie Gaskey, PACA's Director of Environmental, Safety and Health

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This DEP regulation establishes water withdrawal and use registration, monitoring, record-keeping and reporting requirements for facilities (quarries included) whose total withdrawal from the point of withdrawal, or from multiple points of withdrawal operated as a system either concurrently or sequentially, within a watershed, exceeds an average rate of 10,000 gallons per day in any 30-day period. Annual reporting is required by June following the report year.