Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

PFAS Rule Making Notice/Initial Proposal Submitting to Office of Legislative Service (Public Hearing and Public Comment Information)

The Rule Making Notice/Initial Proposal packages for the amendments to Env-Dw 700-800, Env-Or 603.03, and Env-Wq 402 re: PFAS were filed with OLS today.  The RMNs should be in the Rulemaking Register published on Thursday, January 24, 2019.  The notices and initial proposals are available on-line at: https://www.des.nh.gov/organization/commissioner/legal/rulemaking/index.htm#pdrinking https://www.des.nh.gov/organization/commissioner/legal/rulemaking/index.htm#poil https://www.des.nh.gov/organization/commissioner/legal/rulemaking/index.htm#pwaterq Public Hearing Dates: Monday, March Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Final Briefing Report: Review of the ATSDR Toxicological Profile for Perfluoroalkyls by Stephen M. Roberts, Ph.D.

This briefing report was prepared at the request of the New Hampshire Department of Environmental Services (NHDES) and provides information on specific topics identified by the Department. Much of the information in this briefing was obtained from review of the public comment draft report, Toxicological Profile for Perfluoroalkyls prepared by the Agency for Toxic Substances Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

NHDES Report on PFAS MCL/AGQS Development

The summary report on the NHDES development of the Maximum Contaminant Levels and Ambient Groundwater Quality Standards for perfluorooctanesulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononoic acid (PFNA) and perfluorohexanesulfonic acid (PFHxS) is available here: https://www.des.nh.gov/organization/commissioner/pip/publications/documents/r-wd-19-01.pdf The report provides the method by which NHDES derived the proposed Maximum Contaminant Levels (MCLs) and Ambient Groundwater Quality Standards Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Release: NHDES Proposes New PFAS Drinking Water Standards

News from the New Hampshire Department of Environmental Services FOR IMMEDIATE RELEASE DATE: January 2, 2019    CONTACT: Jim Martin, (603) 271-3710     NHDES Proposes New PFAS Drinking Water Standards Initiates Rulemaking for PFOA, PFOS, PFHxS and PFNA Concord, NH – On December 31, 2018, the New Hampshire Department of Environmental Services (NHDES) initiated rulemaking Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

South River Road Project –Construction Delay

South River Road Project –Construction Delay At the October 10, 2018 public meeting held in Merrimack, NH, a construction begin date of October 29, 2018 was communicated for the start of the South River Road Project. The contractor, Northeast Earth Mechanics, has been delayed with the completion of a previous project due to weather constraints. Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Draft reference list that is currently being used by the Health Risk Assessment (HRA) Team at NH-DES to develop MCL’s for PFOA, PFOS, PFHxS and PFNA.

Below is the draft reference list that is currently being used by the Health Risk Assessment (HRA) Team at NH-DES to develop MCL’s for PFOA, PFOS, PFHxS and PFNA. Draft PFAS Reference List as of 11-07-18 The draft list is comprised of references from:  ·         Governmental documents on PFAS (e.g. ATSDR Draft Toxicological Profile, US EPA Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Slides for upcoming PFAS MCL work sessions

NHDES is holding several work sessions next week related to setting public drinking water (MCLs) and groundwater standards (AGQS) for the following Per- and Polyfluoroalkyl Substances (PFASs): PFOA, PFOS, PFNA and PFHxS. Here are the slides that will be discussed at the meetings: PFAS MCL Work Session Slides The meeting announcement and schedule can be found here: https://www.des.nh.gov/media/pr/2018/20181003-pfas-meetings.htm

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Agenda for Oct. 10 Public Information Meeting in Merrimack

Agenda Public Information Meeting Wednesday, October 10, 2018 – 6:30 PM James Mastricola Upper Elementary School (JMUES) All-Purpose Room 26 Baboosic Lake Road, Merrimack, NH Welcome – 5 minutes, Lynn Christensen, Town Moderator NHDES Update – 15 minutes, Clark Freise, Asst. Commissioner, NHDES MVD Update – 10 minutes, Mike Metcalf and Keith Pratt, Underwood Engineering, Read More

Briefing Report - Prepared by Stephen M. Roberts, Ph.D.

Stormwater System Improvements Planned at Saint-Gobain Facility (Seventh post in a Series)

(This post is the seventh in a series describing the Site Investigation activities that are taking place or will be in the areas around the Saint-Gobain facility.) Stormwater generated at the Saint-Gobain facility is collected in a below ground piping network and discharged at an outfall on the Merrimack River. Water has been observed discharging Read More