National Grid conducts quarterly groundwater sampling in accordance with the quarterly groundwater monitoring program in the Record of Decision. The reports are placed on the website (Major Reports) and in the Document Repository. Since the remediation was conducted, BTEX and total PAH concentrations have been generally decreasing in shallow groundwater on and adjacent to the site, and are below historical levels. Concentrations in intermediate and deep groundwater have generally remained at, or near detection levels. Many of these wells have satisfied monitoring reduction criteria, as approved by the NYSDEC in March 2014, for having BTEX and PAH compounds meeting Class GA groundwater standards. Since site remediation, measurable quantities of DNAPL have only been identified in one well following remediation and have been decreasing.