An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Naval Weapons Industrial Reserve Plant Calverton

Environmental Restoration Program Public Website
Collapse All Expand All
 

WHY ISN'T THE NAVY USING THE NY STATE MAXIMUM CONTAMINANT LEVEL (MCL) FOR PFAS IN RELEASE AREA INVESTIGATIONS?


  • MCLs are applicable to water suppliers and not used for delineation

  • MCLs are not clean up values

  • Navy is using the EPA Regional Screening Levels (RSLs) for Release Area investigations

    • RSLs are 6 parts per trillion (ppt) for PFOA & 4 ppt for PFOS

    • NY MCL is 10 ppt for PFOA & PFOS

 

WHY ARE THE REGIONAL SCREENING LEVELS (RSLs) LOWER THAN THE 2016 HEALTH ADVISORIES FOR PFAS?


  • Screening levels are used to eliminate areas where risks are very low and no further action is needed

  • Health advisories look at contaminant exposure over a period of time (lifetime)

 

WHEN DO THE MOST RECENT PROPOSED EPA MAXIMUM CONTAMINANT LEVELS (MCLs) FOR PFAS COME INTO EFFECT?


These will not be in effect until finalized (expected in 2024). The EPA proposed a federal MCL of 4 ppt for PFOA and 4 ppt for PFOS in March 2023. EPA requested public comment on the proposed regulation which ended on May 30, 2023. DoD respects and values the public comment process on this proposed nationwide drinking water rule and looks forward to the clarity that a final regulatory drinking water standard for PFAS will provide. In anticipation of the final standard that EPA expects to publish by the end of 2023, the Department is assessing what actions DoD can take to be prepared to incorporate EPA’s final regulatory standard into our current cleanup process, such as reviewing our existing data and conducting additional sampling where necessary.

In addition, DoD will incorporate nationwide PFAS cleanup guidance, issued by EPA and applicable to all owners and operators under the federal cleanup law, as to when to provide alternate water when PFAS are present.

For more information please see the EPA's website by clicking here:

 

DO THE SURFACE WATER PROJECT SCREENING LEVEL (PSL) INCLUDE THE TOXICITY TO FISH? DOES IT PROTECT HUMAN HEALTH CONSUMPTION FOR EATING FISH?


  • The Site Inspection evaluated human health exposures to various media - not including fish or fish consumption. Swimming and incidental ingestion scenarios were evaluated.

  • Separate surface water values will be calculated/used based on site specific conditions and exposure routes in the upcoming Remedial Investigations

The DOH conducts its own fish assessments and the DoD shares data and conclusions with the state.

 

WILL THE DEVELOPMENT AT THE FORMER GRUMMAN FACILITY RELEASE MORE PFAS TO THE ENVIRONMENT AND WHAT IS THE NAVY'S ROLE?


Contamination:

  • Soils - There are no PFAS detections in soils of the transferred Town of Riverhead property (along the Eastern Western runways)

  • Groundwater - Shallowest groundwater deeper than typical construction depth

Navy's Role:

  • Once property is transferred from the Navy, the Navy plays no role in determining future uses of that property

  • Regardless of future use or development, the Navy remains committed to conducting clean up at Calverton

 

HOW HAS THE NAVY INVESTIGATED THE WESTERN RUNWAY?

Below is a brief overview of Sites 3 & 4 as well as investigations along the Western Runway in general

Site 3 – Ammunition Demolition Area

Site 3 – Ammunition Demolition Area was used from 1957 to 1985 for demolition of ammunition-related wastes. Residues of fuel oil (JP-4 and JP-5) were used to destroy the explosive components by dumping them into a kettle fire that was set in a 55-gallon drum placed in an unlined pit. Even though fires were set at this area using waste fuel, it was a contained, controlled burn that most likely smoldered out on its own, so the use of AFFF is unlikely at this Site.

  • Site 3 was evaluated in the Initial Assessment Study of NWIRP Bethpage & NWIRP Calverton (December 1986) and recommended for no further study (§2.3.1.3)

  • Site 3 was evaluated for potential PFAS release in the Facility-Wide Preliminary Assessment of Potential Sources of PFAS (October 2021) and was recommended no further PFAS evaluation (§3.4.3.2 & Table 3-3).

Site 4 – Picnic Grounds Disposal Area

Site 4 – Picnic Grounds Disposal Area was used as a disposal area from the mid- 1950s through the mid-1980s and consisted of a single trench-style landfill of approximately 60 feet by 40 feet where materials such as framing lumber, snow fencing, steel wall studs, steel stairways and ladders, tubular tow bars, tubular steel supports, foam billets, a plastic nosecone, a card table, stainless steel fabrications, plastics, carpeting, metal fabrications were disposed. No cans, barrels, or other containers which may have held liquid wastes were observed during the initial assessment study in 1986. Site 4 was used primarily as a construction debris landfill, and PFAS-containing materials are unlikely to have been disposed of at this site.

  • Site 4 was evaluated in the Initial Assessment Study of NWIRP Bethpage & NWIRP Calverton (December 1986) and was recommended for a Confirmation Study (§2.3.1.4)

  • Site 4 was then evaluated in the Final Site Investigation NWIRP Calverton (April 1992). The concentrations of contaminants detected were generally low, near background levels for inorganics or near the detection limits for organics. Based on this, no additional investigation in this area was recommended (§8 & Table 8-1).

  • Site 4 was evaluated for potential PFAS release in the Facility-Wide Preliminary Assessment of Potential Sources of PFAS (October 2021) and was recommended no further PFAS evaluation (§3.4.3.3 & Table 3-3).

Grass Fire Area

Grass Fire Area – During the Preliminary Assessment, interviews were conducted with former facility personnel and a grass fire area was identified. The grass fire occurred within the 1996-1998 timeframe inside the fence at the end of the western runway. The interviewee noted that water was used to extinguish the fire, rather than AFFF.

  • This Grass Fire Area was evaluated for potential PFAS release in the Facility-Wide Preliminary Assessment of Potential Sources of PFAS (October 2021) and was recommended no further PFAS evaluation (§3.4.3.49 & Table 3-3).

Jet Fuel Spill Site (Area of Concern 09)

Jet Fuel Spill Site (Area of Concern 09) – On June 6, 1985, a tire blowout occurred to an aircraft during takeoff on the western runway and fuel from the aircraft spilled during the incident. AFFF was discharged onto the area where fuel spilled likely either suppress or prevent a fire. The soil impacted by the spill was removed by Grumman Corporation and Marine Pollution Control but PFAS impacts to the area were not investigated at the time.

  • AOC 09 was evaluated for potential PFAS release in the Facility-Wide Preliminary Assessment of Potential Sources of PFAS (October 2021) and was recommended to proceed to Site Inspection (§3.4.2.7 & Table 3-3).

  • AOC 09 was evaluated for PFAS in the Facility Wide PFAS Site Inspection (October 2023) and no PFAS exceeded the applicable screening levels. The SI concluded that the removal action to address the fuel spill likely removed PFAS-impacted soils and was recommended for no further PFAS evaluation (§4.7).

  • During the PFAS Site Inspection, additional samples were collected adjacent to AOC-09 along the western runway and the southwestern fence line to address concerns of any other unidentified PFAS release sites on the western half of the facility that may be negatively impacting groundwater. Concentrations of the PFAS currently used for evaluation were not detected in the majority of these samples, and when they were detected they did not exceed the applicable screening levels.

Based on available information and analytical data, there are no Navy PFAS release areas in the western portion of the facility that are negatively impacting soil or groundwater. Please find the referenced documents on the administrative record at the links below.

Reference Links:

Initial Assessment Study of NWIRP Bethpage, NY and NWIRP Calverton, NY (December 1986)
Final Site Investigation Report (April 1992), Vol. 1
Final Site Investigation Report (April 1992), Vol. 2
Final Site Investigation Report (April 1992), Vol. 3
Facility Wide Preliminary Assessment for Potential Sources of PFAS (October 2021), Vol. 1
Facility Wide Preliminary Assessment for Potential Sources of PFAS (October 2021), Vol. 2
Facility Wide Site Inspection for PFAS (October 2023), Vol. 1
Facility Wide Site Inspection for PFAS (October 2023), Vol. 2
 

This is an Official US Navy Website • Please read this Privacy Policy • GILS NUMBER DOD-USN-000702
NAVFAC Jobs  |  FAQ  |  Search  |  Accessibility  |  FOIA  |  No Fear Act  |  Veterans Crisis Line  |  VA Vet Center  |  FVAP  |  Site Map