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Perchlorate Detection Limit for Purposes of Reporting (DLR)


On Tuesday, April 28, 2020 the State Water Board held an Administrative Procedure Act (APA) public hearing for the Division of Drinking Water (DDW) Regulations on Perchlorate Detection Limit for Purposes of Reporting.  As part of these regulations, DDW is proposing to reduce the perchlorate detection limit for purposes of reporting (DLR) from 0.004 to 0.002 mg/L.  Reducing the DLR for perchlorate may impact future decisions about your laboratory's accreditation.  ELAP is encouraging laboratories and interested parties to participate in the public rulemaking process during the development and adoption of the proposed Perchlorate Detection Limit for Purposes of Reporting regulations.     A copy of the Revised Notice is attached for your reference. The written comment deadline is 12:00 noon of Friday, May 1, 2020, at noon. Please refer to the Revised Notice for instructions on how to submit a comment letter.

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