Town of
Nassau
Dewey Loeffel Landfill Cleanup

Dewey Loeffel Landfill Cleanup

 
The September 2016 Project Update for the Dewey Loeffel Landfill Superfund Site is also available on EPA’s project webpage: https://semspub.epa.gov/src/collection/02/SC31269.

 

DEWEY LOEFFEL LANDFILL SUPERFUND SITE                                                                      

SEPTEMBER 2016 PROJECT UPDATE

WATER TREATMENT PLANT & NEW EXTRACTION WELLS

A 2012 agreement with GE and SI Group required the construction and operation of a water treatment plant at the Dewey Loeffel Landfill Superfund site, as well as the installation of five additional groundwater extraction wells along the western edge of the landfill. The water treatment plant has been constructed and operating since late 2013, and the five additional extraction wells were brought online between July and October 2015. The additional extraction wells are located closer to the landfill than three previously-installed wells, and serve to collect additional contaminated groundwater for treatment. Since the last of the five new extraction wells was brought online, the water treatment plant has been operating at a flow rate of approximately 6 gallons per minute. Regular weekly sampling of the treated water continues, and the results indicate that the plant continues to work effectively, and in compliance with the discharge limits that were established by the State of New York.

To ensure the maximum effectiveness of the treatment plant, the first carbon filter unit (known as the lead carbon filter) was last replaced on July 7, 2016 and both carbon filter units are scheduled to be replaced on September 22, 2016. Sampling data from the treated water at the plant is available on the EPA Dewey Loeffel site webpage: www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.  

REMEDIAL INVESTIGATION/FEASIBILITY STUDY (RI/FS): SURFACE DRAINAGEWAYS

EPA approved the Phase 1 Remedial Investigation Work Plan for the Drainageways in August 2015. The associated field work began in September 2015 and concluded in December 2015 following a delay due to weather conditions. The sampling activities included the collection and analysis of samples from the surface drainageways, including but not limited to the Valatie Kill, Nassau Lake and Valley Stream.

GE submitted the Site Characterization Summary Report in June 2016. This report includes a summary of existing data for the surface drainageways, including the data collected in 2015, as well as the identification of additional data needed in order to assess risks to human health and the environment and evaluate potential cleanup alternatives for the drainageways. Following EPA’s approval of the Site Characterization Summary Report, GE will submit a work plan detailing the steps necessary for the completion of the study of the drainageways (Phase 2).

REMEDIAL INVESTIGATION/FEASIBILITY STUDY (RI/FS): LANDFILL - GROUNDWATER

In October 2015, EPA approved the revised RI/FS Work Plan for the Landfill-Groundwater, which requires the investigation of groundwater, soil, and the landfill, including an assessment of the integrity of the existing slurry wall. The RI/FS Work Plan is available on the EPA’s Dewey Loeffel site webpage under “Additional Reports and Documents.”

The collection of shallow soil and groundwater samples, located both inside and outside of the landfill, began in July 2016 and was completed in August 2016. The results of this sampling will be used to guide the locations and depths of permanent shallow groundwater monitoring wells, which would be installed later in the investigation.

Three pairs of groundwater wells recently installed in the vicinity of Valley Stream were sampled in July 2016. An existing well located near Valley Stream is scheduled to be sampled in September 2016. The data collected from these wells will be used to determine the location of a deep groundwater well, which would be installed later in the investigation.

As part of an investigation of the potential for vapors to migrate from the subsurface into indoor air (referred to as “vapor intrusion”), three groundwater wells were installed in August 2016. The wells will be sampled in fall 2016 and the sampling results will be used to further evaluate whether the potential for vapor intrusion exists.

RESIDENTIAL WELL SAMPLING PROGRAM

Residential wells with individual treatment systems are sampled on a quarterly basis. Residential wells without treatment systems are either sampled on a semi-annual, annual or every-other-year basis depending on their location in relation to impacted groundwater areas, and location relative to the direction of groundwater flow. Residential wells monitored on a quarterly basis were sampled in August 2016 and the results will be distributed by GE and SI Group following their receipt from the laboratory. The current schedule for the next sampling event is as follows: wells sampled quarterly (November 2016); wells sampled semi-annually (November 2016); wells sampled annually (November 2016); wells sampled every-other-year (fall 2017). Upcoming sampling events are subject to change based on the resident’s availability.

FISH MONITORING

Annual fish sampling in the Valatie Kill and Nassau Lake was completed in June and July 2016. A report summarizing the results of the 2016 fish sampling will be submitted to EPA after the analytical results are received from the laboratory.  The report summarizing the results of the 2015 fish sampling (2015 Biological Monitoring Data Summary Report) is available on the EPA’s Dewey Loeffel webpage under “Additional Reports and Documents.”

SURFACE WATER MONITORING

Surface water from the Valatie Kill and Tributary T11A is sampled annually on three occasions during the summer and fall. The first of the three 2016 sampling events was conducted in June 2016, and the remaining two events are scheduled to be completed during the next quarter.

SAMPLING OF VALATIE KILL IN VILLAGE OF NASSAU

In 2014, the EPA collected surface water and sediment samples in the Valatie Kill in the vicinity of the Dewey Loeffel site, in the Valatie Kill between Nassau Lake and Kinderhook Lake, and in Kinderhook Lake. In response to a request from the Village of Nassau, the EPA collected several additional surface water and sediment samples from the Valatie Kill in April 2016 and July 2016. The results of the 2016 sampling are now available and have been posted on the EPA’s Dewey Loeffel site webpage under “Additional Reports and Documents, along with a figure showing the sampling locations.  

 

For more information about the Dewey Loeffel Landfill Superfund Site, contact:


 

Joseph Battipaglia

Remedial Project Manager

Hudson River Field Office
187 Wolf Road, Suite 303
Albany, NY 12205

(518) 407-0400

battipaglia.joseph@epa.gov

 

Larisa Romanowski
Community Involvement Coordinator
Hudson River Field Office
187 Wolf Road, Suite 303
Albany, NY 12205

(518) 407-0400
romanowski.larisa@epa.gov


 

www.epa.gov/superfund/dewey-loeffel-landfill


EPA Update on Loeffel Superfund Site:  August 16, 2016
 

The data from the sampling conducted on August 3, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


EPA Discharge Update on the Loeffel Superfund Site: August 9, 2016
 
The data from the sampling conducted on July 27, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.  


EPA Field Work Update - July 26, 2016
 

Supervisor Fleming and Superintendent McCagg,

 

Below is a summary of the upcoming field work that is anticipated to occur outside of the landfill property itself, as well as some other notable site activities.

·         Landfill/Groundwater Investigation:

o   The collection of discrete-interval soil and groundwater samples both inside and outside of the landfill began in mid-July and is expected to continue into August. Consistent with the approach in the approved investigation work plan, the sampling locations for this work are based upon the results of the direct-sensing investigation completed in April 2016. The discrete-interval soil and groundwater sampling may be visible from Mead Road both inside the landfill and on adjacent properties.

o   The sampling of three pairs of groundwater wells near Valley Stream was completed in mid-July. The data from the sampling of these three well pairs will be used to determine the location of a deep bedrock well to be installed in the vicinity of Valley Stream in the future. Near-continuous water level monitoring will continue for the three pairs of groundwater wells. Monthly spot measurements will also be collected at the staff gauges and monitoring wells in the vicinity of Valley Stream. Some of these activities may be visible along Central Nassau Road and Curtis Hill Road.

o   The installation of three shallow groundwater monitoring wells is scheduled to begin at two properties in mid-August. One well will be installed at a property along Central Nassau Road and two wells will be installed at a property along Mead Road. A private utility mark-out will also be performed in advance of the well installation to locate underground utilities and structures at the planned locations of the monitoring wells. These activities may be visible along Central Nassau Road and Mead Road. Consistent with the approved investigation work plan, the results of the sampling of the shallow wells will be used to evaluate the potential for vapor intrusion.

·          Drainageways Investigation:

o   No field work expected in the next month.

·         Monitoring and Other Activities:

o   For residential wells monitored on a quarterly or semi-annual basis, sampling was completed in May 2016. The next monitoring event is scheduled for August 2016 and will include residential wells monitored on a quarterly basis.

o   EPA collected 4 surface water and 4 sediment samples from the Valatie Kill adjacent to Donald P Sutherland Elementary School on April 11th. For a portion of the samples, the allowable holding time was exceeded due to an equipment issue at the laboratory. The holding time was exceeded only for the analysis of volatile organic compounds (VOCs) in surface water, and this issue does not apply to the analysis of any other parameters in surface water or sediment. In order to obtain results that meet our data quality objectives, EPA re-collected samples for the analysis of VOCs in surface water on July 6th. The results of the April 11th sampling, which includes analysis for all parameters except for VOCs in surface water, have been received from the laboratory and are under review. The results of the July 6th sampling for VOCs in surface water are forthcoming.

o   Consistent with previous years, a portion of the annual fish sampling was completed in the Valatie Kill in June 2016. The remainder of the annual fish sampling in the Valatie Kill, as well as the sampling in Tributary T11A and Nassau Lake, began earlier this week and is scheduled to conclude later this week.


EPA emails to Supervisor Fleming regarding Valatie Kill discharge - July 26, 2016
 

EPA Update on Loeffel Superfund Site - August 2, 2016

 

The data from the sampling conducted on July 20, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.  


EPA Update on Loeffel Superfund Site - July 26, 2016

The data from the sampling conducted on July 13, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


EPA Update on Loeffel Superfund Site - July 20, 2016
 

The data from the sampling conducted on July 6, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

On July 7, the first carbon filter unit in the plant (known as the lead) was replaced. The next sampling event, after the carbon filter was replaced, occurred on July 13. The July 13 results are expected next week.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


EPA Update on Loeffel Superfund Site - July 12, 2016

 

The data from the sampling conducted on June 29, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

The first carbon filter unit in the plant (known as the lead) was replaced last Thursday, July 7thThe data reflecting this change-out of the carbon filter is expected to be available the week after next (week of July 25).

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.



EPA Update on Loeffel Superfund Site - July 6, 2016
 
The data from the sampling conducted on June 22, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

The first carbon filter unit in the plant (known as the lead) is scheduled to be replaced this Thursday, July 7th.  

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


EPA Update on Loeffel Superfund Site - June 29 , 2016
 
The data from the sampling conducted on June 15, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

The first carbon filter unit in the plant (known as the lead) is scheduled to be replaced next Thursday, July 7th.  

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.  


EPA Update on Loeffel Superfund Site - June 21 , 2016
 

The data from the sampling conducted on June 8, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box.  


EPA Update on Loeffel Superfund Activities: June 20, 2016 - 9:19AM
 
Below is a summary of the upcoming field work that is anticipated to occur outside of the landfill property itself, as well as some other notable site activities.

·         Landfill/Groundwater Investigation:

o   Discrete-interval soil and groundwater samples are scheduled to be collected both inside and outside of the landfill in July and August. Consistent with the approach in the approved investigation work plan, the sampling locations for this next phase of work are based upon the results of the direct-sensing investigation completed in April 2016.

o   Three pairs of groundwater wells, which were installed in the vicinity of Valley Stream in February 2016, are scheduled to be sampled once GE and SI Group’s contractors are able to secure access to one of the wells located behind Central Nassau Cemetery. Data from the sampling of the three well pairs are needed to determine the location of a deep bedrock well to be installed in the vicinity of Valley Stream. The sampling of these wells is an important part of the groundwater investigation and obtaining access to the well is critical to the project schedule.

o   While GE is unable to sample the three pairs of wells (mentioned in the above bullet) until access to one of the well pairs is secured to allow for sampling, GE and SI Group’s contractors may still be observed in the area, but not on the cemetery property, related to the collection of continuous water level measurements.

·          Drainageways Investigation:

o   No field work expected in the next month. The draft Site Characterization Summary Report was submitted for EPA review in June 2016. This report includes a summary of existing data for the surface drainageways, including the recently collected data collected from late 2015, as well as an evaluation to determine if more information is needed for the study of the drainageways. Following EPA’s approval of this report, GE will submit a work plan detailing the steps necessary for the completion of the study of the drainageways (Phase 2).

·         Monitoring and Other Activities:

o   Annual fish and surface water sampling throughout Tributary T11A, Valatie Kill, and Nassau Lake is scheduled for June/July 2016.

o   For residential wells monitored on a quarterly or semi-annual basis, sampling was completed in May 2016. The next monitoring event will be scheduled for August 2016 and will include residential wells monitored on a quarterly basis.

o   EPA collected 4 surface water and 4 sediment samples from the Valatie Kill adjacent to Donald P Sutherland Elementary School on April 11th. The results have been received from the laboratory and are under review.

o   Groundwater sampling and water level monitoring will be conducted in wells located inside and outside of the landfill. There are approx. 29 wells located outside of the landfill on properties along Mead Road and Central Nassau Road where water level measurements will be collected.

 


EPA SAMPLING AT LOEFFEL SUPERFUND SITE: Wednesday, June 15, 2016 8:00:19 AM

The data from the sampling conducted on June 1, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

 

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


Dewey Loeffel Landfill Superfund Site - June Project Update
 

EPA Update on PFOA at Loeffel Site: May 31, 2016

Supervisor Fleming,

 

Thank you for your patience in awaiting our response to your request for additional sampling for perfluorinated compounds at the Dewey Loeffel site. Please see the attached letter, which will be mailed in hard copy later today, from Walter Mugdan, the director of EPA Region 2’s Emergency and Remedial Response Division (Superfund).

 

The document may be found here.


EPA Update on Sampling of Treated Water from the Treatment Plant at the Dewey Loeffel Landfill Superfund Site: May 25, 2016

 

The data from the sampling conducted on May 11, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


EPA Update on Loeffel Superfund Site - May 17, 2016
 
The data from the sampling conducted on May 4, 2016 is now available on EPA’s Dewey Loeffel Landfill Superfund Site webpage.

For more information about the site, and to view the most recent sampling results, visit www.epa.gov/superfund/dewey-loeffel-landfill. The sampling data is now located in the middle of the Dewey Loeffel homepage in the “Topics in Focus” text box. 


 
EPA Update on Loeffel Superfund Site - May 12, 2016

Below is a summary of the upcoming field work that is anticipated to occur outside of the landfill property itself.

·         Landfill/Groundwater:

o   The direct-sensing investigation work on and adjacent to the landfill was completed in April 2016. Following EPA’s review of the results of the direct-sensing investigation, additional soil and groundwater samples are scheduled to be collected outside of the landfill later this summer.

o   Surface water sampling in the southeast drainage ditch and upper portions of the northwest drainageway is scheduled for today, May 12th. See my email from yesterday for more details.

o   Three wells in the vicinity of Valley Stream, which were installed in February 2015, are scheduled to be sampled once GE and SI Group’s contractors are able to access one of the wells (located behind Central Nassau Cemetery). The three wells are located slightly to the west of Valley Stream between Curtis Hill Road and Mead Road. The sampling of the three wells is a critical path item and continues to impact the project schedule.

o   While GE is unable to sample the three wells (mentioned in the above bullet) until access to the well located behind the cemetery property is secured to allow for sampling, GE and SI Group’s contractors may still be observed in the area, but not on the cemetery property, related to the collection of continuous water level measurements.

·          Drainageways:

o   No field work expected in the next month; however, the Site Characterization Summary Report is expected later this spring. This report will include a summary of existing data for the surface drainageways, including the recently collected data collected from late 2015, as well as an evaluation to determine if more information is needed from the study of the drainageways. Following EPA’s approval of this report, GE will submit a work plan for the completion of the study of the drainageways (Phase 2).

o   Annual fish and surface water sampling throughout Tributary T11A, Valatie Kill, and Nassau Lake is scheduled for summer 2016

·         Monitoring and Other Activities:

o   For residential wells monitored on a quarterly or semi-annual basis, sampling is scheduled for May 2016. The next monitoring event will be scheduled for August 2016 and will include residential wells monitored on a quarterly basis.

o   EPA successfully collected 4 surface water and 4 sediment samples from the Valatie Kill adjacent to Donald P Sutherland Elementary School on April 11th. EPA is awaiting the receipt of the analytical results from the laboratory.

o   Groundwater sampling and water level monitoring will be conducted in wells located inside and outside of the landfill. There are approx. 29 wells located outside of the landfill on properties along Mead Road and Central Nassau Road where water level measurements and/or groundwater samples will be collected.

 
EPA Update on Loeffel Superfund Site - May 11, 2016
 
I expect to have my regular email summarizing upcoming field work associated with the Loeffel Landfill sent out within the next couple of days. In the meantime, I wanted to let you know that some of the surface water sampling associated with the landfill-groundwater investigation has been moved up from June 2016 to tomorrow due to drier-than-average weather conditions.

Surface water sampling in the southeast drainage ditch and upper portions of the northwest drainageway was originally scheduled for June 2016. Because these surface water bodies are relatively small with little to no flow during the dry season, there may not be sufficient surface water to complete the sampling in June if dry weather conditions continue. To ensure that a delay in the schedule is avoided, the sampling has been rescheduled for tomorrow, Thursday, May 12th. While it is anticipated that this field work can be completed tomorrow in one day, it may extend into next week (weather permitting). Much of the sampling will be conducted from private properties near the landfill, but some of the work may be visible from Mead Road and Central Nassau Road.  

 


EPA response to PFOA levels
 
From: "Joseph Battipaglia"
Sent: Tuesday, May 10, 2016 4:59:53 PM
Subject: Dewey Loeffel: March 23, 2016 Perfluorinated Compound Sampling Results

Supervisor Fleming,

 

In response to your February 1, 2016 letter asking whether the groundwater and treated effluent from the treatment plant at the Dewey Loeffel Landfill Superfund site had been sampled for perfluorooctanoic acid (PFOA), the EPA committed to collecting samples from the site for PFOA analysis. On March 23, 2016, the EPA collected two samples from the site for the analysis of perfluorinated compounds. The samples were collected from the groundwater influent to the treatment plant and from the treatment plant effluent. The two samples were analyzed for 18 perfluorinated compounds, including PFOA. The results of the sampling are now available and are summarized below.

 

The data was subjected to standard EPA Region 2 validation procedures and protocols and, as a result of that process, it was determined that two detections of perfluorinated compounds were present in the groundwater influent sample and one detection of a perfluorinated compound was present in the treated effluent sample. For the sample collected from the groundwater influent to the treatment plant, PFOA was detected at an estimated concentration of 2.6 parts per trillion (ppt)1 and perfluorobutanoic acid (PFBA) was detected at a concentration of 84 ppt. Note that these compounds were not detected in the treated effluent. For the sample collected from the treated effluent, perfluorobutanesulphonic acid (PFBS) was detected at a concentration of 2 ppt although it was not detected in the groundwater influent sample. The detections of PFOA, PFBA and PFBS are summarized in the table below and discussed further in the text below. A complete table summarizing the analytical results for perfluorinated compounds is also attached.  Click here for the complete table.

 

 

Groundwater Influent

Treated Effluent

PFOA

2.6 J ppt

ND

PFBA

84 ppt

ND

PFBS

ND

2 ppt

ND- Not Detected

J- The analyte is an estimated quantity and the associated numerical value is the approximate concentration of the analyte in the sample.                        

 

EPA is using the best science to develop a lifetime health advisory level for PFOA, which the agency expects to release in spring 2016. Lifetime health advisories serve as guidance and are benchmarks for determining if concentrations of chemicals in tap water from public utilities are safe for public consumption. Health advisories provide federal, state, local and tribal governments with non-regulatory guidance to make decisions in cases when a chemical is not federally regulated. When issued, the lifetime health advisory for PFOA will supersede the provisional health advisory of 400 ppt for PFOA issued in 2009.

 

EPA recommended that people in the Town of Hoosick and the Village of Hoosick Falls who have private wells at which PFOA has been found to be present at a level greater than 100 ppt not use that water for drinking or cooking, and instead use bottled water. EPA’s advice was a result of specific circumstances that existed in that community, including the fact that: 1) free bottled water was being made available to everyone in the community; and 2) the state health department had already offered to test, for PFOA, the private well of everyone in the Town who requested such testing. EPA’s recommendation was also based on site specific information as well as information in the most recent EPA report on PFOA toxicity which underwent external peer review in August 2014.

 

The detection of PFOA in the groundwater influent sample at 2.6 ppt is significantly below both the provisional health advisory level of 400 ppt issued by EPA in 2009 for short-term exposure to PFOA in drinking water, as well as the value of 100 ppt recommended to residents of the Town of Hoosick and the Village of Hoosick Falls. PFOA was not detected in the treated effluent sample.

 

For PFBA, the EPA has not developed a provisional health advisory level for the consumption of drinking water; however, several state agencies have developed values for PFBA under their respective state programs, which are discussed below to provide context for the concentration of PFBA detected in the groundwater influent sample. The Minnesota Department of Health has developed the most stringent of those values with a health risk limit of 7,000 ppt for the lifetime consumption of PFBA in drinking water2. The detection of PFBA at a concentration of 84 ppt in the groundwater influent sample is significantly lower than the health risk limit of 7,000 ppt developed by the Minnesota Department of Health. PFBA was not detected in the treated effluent sample.

 

Documents:
TON EPA letter 3202015 (PDF - 49.0 KB)
Letter to the USEPA from Nassau - March 20, 2015
The following correspondence relates to the comprehensive assessment of remedial options and cost for the Loeffel Superfund Site.
EPA ORDER on Consent (PDF - 1.7 MB)
13070056_Level_1 (PDF - 4.2 MB)
13070057_Level_1 (PDF - 3.6 MB)
DL Soil Borings 070213 (PDF - 12.5 KB)

NYSDEC UPDATE on Groundwater Extraction

The following is the Loeffel 2011 Leachate and Off-site Groundwater Extraction report provided by NYSDEC and completed by the DEC consultant up to the point to when EPA took responsibility to operate the pump and truck systems.  This report is dated December 27, 2011.

 

Permitting Rule Excerpt (PDF - 21.2 KB)

EPA UPDATE – 8/31/2011

EPA recently provided an update on progress at the Dewey Loeffel site. As discussed in their last report, installation of the groundwater monitoring wells began in late June and was completed in mid-July. In August, geophysical evaluation began and further testing of the wells (including sampling) is underway. The groundwater evaluation is schedule to be completed by the end of September.

As you may recall, the Landfill Cap Investigation was initiated in May. The technical report with the results of the investigation is expected by the end of September and will be available on EPA’s website at http://www.epa.gov/region2/superfund/npl/dewey/.

A report summarizing the results of the groundwater investigations is expected at the end of this year. Additional groundwater investigations may be necessary and are dependent on the findings of the investigation.

 

 

The attachment represents a map with the well locations and properties identified for current EPA work on the Loeffel Site.  

EPA has placed 2 wells on property (A. Smith - Block 5 , Lot 20) .  Those are wells 3 and 5 on the attached map.   They have placed 3 wells on property (Block 5 , Lot 21).   Those are wells 1, 2, and 4. 

August 1, 2011 Update on the Loeffel Landfill

Attached is the May, 2011 Groundwater Sampling Event Monitoring Report completed by GE's consultant Tetra Tech Geo (formerly GeoTrans).  The report is dated July 28, 2011.  GE's consultant will conduct their fall groundwater monitoring well sampling in October.  As evidenced by sample results from OMW-222 and OMW-223 (all parameters were non-detect), the groundwater plume has not migrated further in that direction.  This sampling event is a separate effort from the residential well sampling which is conducted by GE's other consultant Arcadis.

 

Also, I would like to report that at the request of EPA, the DEC is now operating the off-site groundwater extraction wells.  You can expect that the number of tanker trips will increase considerably. EPA has completed the installation of five additional off-site monitoring wells and will be performing testing on them shortly. 

 

Mike Komoroske, P.E.
Environmental Engineer 3
NYSDEC
Remedial Bureau B
Division of Environmental Remediation
625 Broadway, 12th Floor
Albany, NY, 12233-7016

Here is the Nassau Lake Dam Technical Inspection report from July 2011 (NLD Tech Inspect T2) with its cover letter.
T&D_Summary_May 2011_2 (PDF - 80.5 KB)
LOEFFEL SITE CLEANUP UPDATE: June 17, 2011

Dear Community Members:

Please find information the Town has requested concerning the tanker trips and loads from the Loeffel Landfill by clicking the above link.  DEC reports that there were 14 tanker trips in the months of April and May.  Their claim is that the leachate composition has not changed.  Additionally, I want to advise you that EPA will begin the off-site monitoring well installation next week.  Their contractors are expected to begin efforts on June 20th.  The actual work is not scheduled to begin until the next day.   GE is also sending consultants out to conduct additional soil and sediment sampling in/near T11A beginning June 22nd.  This sampling is expected to take a few days.


Please let me know if you have any questions. 

Thank you and best regards.

Dave Fleming, Town Supervisor

2010 landfill leachate and off-site groundwater extraction report completed by the state consultant Mactec - posted 28 February 2011.
2010 groundwater sampling results (GE October, 2010 groundwater report) - posted 28 February 2011
Fleming-R2-16-000-3855 (PDF - 766.2 KB)