Bloomingdale Borough Regional Ground Water Contamination
Bloomingdale Borough, Passaic County
PI #: 190358
As of April 13, 2005
Groundwater contamination was found in the Upper Morse Lake area of
Bloomingdale Borough, Passaic County as a result of the sampling of a
private well for the resale of a property. Sampling conducted by the local
health department and other residents identified a total of eight wells
with confirmed contamination above safe drinking water standards. The
case was transferred to the NJDEP’s Office of Wellfield Remediation
(OWR) as an Immediate Environmental Concern (IEC) case in April of 2003.
NJDEP conducted two rounds of samples in order to obtain data from wells
in the area that were not sampled by the property owners. These sample
events occurred on August 13, 2003 and October 23, 2003 during which a
total of twenty wells were sampled. Ninety-nine samples were taken from
fifty-six wells sampled by homeowners and the Department, of which nineteen
wells have confirmed contamination exceeding drinking water standards.
The main contaminant of concern is Tetrachloroethylene (also known as
perchloroethylene, or PCE), which has a Maximum Contaminant Level (MCL)
of 1 part per billion (ppb). The highest concentration of PCE found in
these wells was 8.6 ppb. The source of the PCE contamination is unknown.
Other contaminants were detected but were below the MCLs and are not considered
contaminants of concern.
To address the immediate drinking water needs of those residents with
contaminated wells, the Department’s Environmental Claims Administration
(ECA) funded the installation of Point-of-Entry Treatment (POET) systems
through the POET Program. Currently, eighteen POET units have been installed
which were funded through the ECA.
OWR conducted an investigation to determine the most cost effective
water supply solution. Planning an alternate water supply requires that
the scope of the water supply project area be delineated. The Department
delineated this area by encompassing all the contaminated wells that are
within a 1000-foot radius of 4 other wells with confirmed contamination.
The area delineated is referred to as the Currently Known Extent (CKE)
area. The CKE area includes all the contaminated wells along with wells
that were not tested or tested below the MCLs but are within the delineated
In the Upper Morse Lake area of the Bloomingdale Groundwater Contamination
case, a CKE Project area was delineated to include a total of thirty-nine
lots, all of which are developed. Seventeen wells have confirmed contamination
, while three have only one sample showing a single exceedance of the
MCLs. Two of the wells with confirmed contamination are outside of the
CKE and will be handled individually.
WATER SUPPLY ALTERNATIVES
Three long-term water supplies were considered as a replacement water
supply for the existing homes in the CKE Project area. The alternatives
INSTALLATION OF DEEPER WELLS
This alternative evaluates the installation of deeper wells to replace
the wells in the CKE Project area. The geology of this area was considered
to evaluate the feasibility and reliability of deeper wells. Due to the
geology in the area there are no confining layers that would stop the
vertical migration of the contamination. In addition, the fractured rock
aquifer can be highly influenced by pumping of wells. Contamination can
be pulled through the fractured rock and may result in deeper wells drawing
the contamination further in the aquifer and contaminating new deeper
wells. For this reason the installation of deeper wells is not considered
a reliable alternative and was not evaluated any further.
LONG TERM USE OF POET SYSTEMS
This alternative evaluates the use of a POET system to treat all the
water entering a home. The alternative involves the installation of treatment
systems and the long term monitoring and maintenance of the POETs. The
contaminant found in the Upper Morse Lake area of Bloomingdale Borough
is a volatile organic chemical that can be removed using granular activated
carbon (GAC) POETs.
To calculate the cost of this alternative, it is assumed that POET units
will be installed in all homes in the CKE at the start of the project.
It should be noted that in actual practice a POET would only be installed
if the well has confirmed contamination that exceeds the MCLs. This alternative
assumes the POET systems will be installed and maintained for a twenty-year
period. Yearly routine maintenance and monitoring includes one raw water
sample, four treated water samples, one GAC tank replacement, four prefilters
replacements and one service call.
CONNECTION TO THE PUBLIC WATER SYSTEM
This alternative evaluates the cost and feasibility of servicing the
homes in the CKE Project area with public water. This alternative considers
the cost of extending a water line in the CKE Project area, installing
service connections, and sealing the potable wells.
The nearest water line is located outside of the CKE area on Natalie
Court. The water line would need to be extended to the end of Natalie
Court and west on Overlook Road into the CKE area. Once the water line
is in the CKE project area it would be extended west on Overlook Road
to the intersection of Ridge Road. The water line would also be extended
along portions of Sunset Road, Sycamore Road, Highland Road and Ridge
Road that are south of Overlook Road. Of the 39 building lots included
in the CKE Project area 39 are developed lots and would require a service
connection and well sealing.
Three alternative water supplies were evaluated to determine their feasibility,
reliability and cost. The alternatives considered were the installation
of deeper wells, the long-term use of POETs and the connection to a public
water system. The installation of deeper wells was not considered to be
a feasible alternative due to the likelihood of future recontamination
of the wells. Both the use of POETs and the connection to public water
were considered to be feasible alternatives. The chart below summarizes
the alternatives, which were reviewed for the Bloomingdale Borough CKE
ALTERNATIVES ANALYSIS SUMMARY
| 1. WELLS
Based on the potable well data and the assumptions made in this report,
the most reliable and cost effective water supply alternative for the
Bloomingdale Borough CKE Project area would be Alternative #3, the connection
to the public water supply system. The cost of this alternative is estimated
to be $709,410.
For further information please contact Mark Herzberg, Community Relations
Coordinator, at (609) 633-1369 or Andrew Sites, Case Manager, at (609)
Please be advised that these
cases labeled by OCR as inactive may still be undergoing remedial
activities but OCR has no involvement. Documents that are available
on this page associated with the inactive list may not reflect
the current status of a case.