NHDES Issues Leaching-Based Soil Remediation Standards for PFAS

Written By Kathryn Ward
PFAS SRS NHDES

On December 24, 2024, the New Hampshire Department of Environmental Services (NHDES) adopted Soil Remediation Standards (SRS) for four per- and polyfluoroalkyl substances (PFAS) under the NHDES Contaminated Site Management Rules (Chapter Env-Or 600).

The four regulated PFAS and their respective SRS (in micrograms per kilogram, or parts per billion (ppb)) are:

  • Perfluorooctanoic acid (PFOA) at 0. 4 ppb;

  • Perfluorooctane sulfonic acid (PFOS) at 0. 5 ppb;

  • Perfluorohexane sulfonic acid (PFHxS) at 0. 4 ppb; and

  • Perfluorononanoic acid (PFNA) at 1.3 ppb

 NHDES provides more information at their NHDES PFAS Response Website.

Kathryn Ward
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