MassDEP has revised WSC-CAM-X A, Quality Control Requirements and Performance Standards for the Analysis of Per- and Polyfluoroalkyl Substances (PFAS) by Liquid Chromatography/Dual Mass Spectrometry (LC-MS/MS) in Support of Response Actions under the MCP, now posted at https://www.mass.gov/info-details/compendium-of-analytical-methods-cam#pfas-methods.

For aqueous samples with elevated levels of total suspended solids, Section 1.6 of the CAM Protocol was updated to clarify that the solvent rinse should be performed with the typical solvent used for the extraction of solid materials (e.g., methanolic ammonium hydroxide).

The LSPA received the following email from MassDEP Bureau of Waste Site Cleanup on August 1, 2025: 

Updated Compendium of Analytical Methods (CAM) protocols for Perchlorate, WSC – CAM – VIII B, Analysis of Perchlorate by Ion Chromatography (IC) with Electrospray Ionization/Mass Spectrometry (ESI/MS or ESI/MS/MS) or High Performance Liquid Chromatography (HPLC) with ESI-MS or ESI-MS/MS, have been posted to MassDEP’s web site at https://www.mass.gov/info-details/compendium-of-analytical-methods-cam#high-performance-liquid-chromatography-hplc-and-ion-chromatography-methods

The LSPA received the following email from MassDEP Bureau of Waste Site Cleanup on June 30, 2025: 

MassDEP has published a number of new Compendium of Analytical Methods (CAM) protocols and materials at https://www.mass.gov/info-details/compendium-of-analytical-methods-cam.