Certification Form Guidance & Instructions
Instructions for Preparation
of a Biennial Certification Monitoring Report for a Classification
Exception Area (CEA)
Attachments to the CEA Biennial Certification
Evaluation of Future Water Uses (Results of the
25-Year Water Use Planning Review)
All plans, records and other relevant information shall be obtained
from the following sources, without limitation. Please check the
following boxes to confirm that the following sources were evaluated.
The New Jersey Water Supply Master Plan;
Department of Environmental Protection, Bureau of Water Allocation;
Municipal master plans;
|| Local water purveyor plans and planning data pertaining to the
existence of water lines and proposed future installation of water
|| Local planning officials;
|| Local and county ordinances restricting installation of potable
|| County and local boards of health.
a. Changes within the 25-year water use planning horizon
Two public water systems are being proposed to serve two individual
housing developments. The closest withdrawal point will be located
approximately 1,000 feet downgradient of the existing CEA. The proposed
wells will be screened from 80 to 150 feet below grade. The CEA
is defined to a vertical depth of 100 feet below grade.
b. Determination of actual or proposed changes in the ground
water use above have influenced or may influence the protectiveness
of the remedial action that includes the ground water CEA (as appropriate).
The estimated time frame to construct the development and install
the potable wells is approximately 20 years from the date of this
correspondence (September 25, 2023). The estimated termination date
for the CEA is August 5, 2005. The on-site monitoring wells associated
with the CEA will be sampled 6 months prior to the CEA expiration
date to determine compliance with the Ground Water Quality Standards
(GWQS). In the event constituents are detected above the GWQS at
that time a contingency plan will be provided to ensure protectiveness.
Attach the appropriate calculations for a revised CEA in this
section, as necessary.
Attach results of computer well search (contact the Bureau
of Water Allocation) for all wells within one mile up-gradient,
side-gradient and down-gradient of the ground water CEA. Identify
all wells, other than ground water monitoring wells, within this
one-mile radius since the Department established the ground water
CEA or the last completed biennial certification, whichever is more
Example: No potable wells were identified
within a one-mile downgradient/sidegradient direction of the CEA.
One irrigation well is located approximately 1,000-feet upgradient
(southeast) of the site CEA. Well information including well owner,
screening interval, pumping rate, date in which well was installed
and well search map identifying site and irrigation well is provided
in attachment. Water elevations were resurveyed in existing monitoring
wells associated with this CEA and ground water flow direction was
reconfirmed. Current flow direction (northwest) is consistent with
previous flow directions. In addition, ground water samples were
collected from the site monitoring wells. The concentration gradient
is consistent with historical trends and no contaminant concentrations
are present in the site upgradient monitoring well. Based upon this
information the existing remedial action remains protective of the
public health and safety and the environment.
Maintenance Records for Monitoring Wells
Please check the appropriate box below.
______ No monitoring wells, associated with this site, are present.
___X__ Monitoring wells
and records, associated with this site, are enclosed.
Provide the following information for each monitoring well
including the frequency and dates of inspections:
- The identification, integrity and location of the well (on
a scaled site map;
- The presence of a functioning pad lock; and
- The presence of any additional security measures such as
a fence or patrolling of the site.
Example: On-site monitoring wells (MW-1 through
MW-4) are identified on the attached, scaled site plan. The site
is inspected on a quarterly basis (March, June, September and December)
on the first Monday of the corresponding month. During each visit
the surrounding six-foot chain link fence is inspected for security
including breeches and or damage to the fence or the one main gate
entrance (see site plan). In addition, all monitoring wells are
inspected for integrity. During inspection, the flush mount monitoring
wells were inspected. The pad lock on MW-1 was rusted shut. This
pad lock was replaced with a new functioning pad lock. The concrete
pad surrounding the steel plate (also known as the “Road Box”)
protecting MW-3 was crushed apparently due to on-site construction
activities. The interior 4” well casing with locking cap were
not damaged during inspection. The Road Box was replaced and two
bollards were installed to prevent further damage in this high traffic
area. Remaining monitoring wells MW-2 and MW-4 were also inspected
and determined to be sound.
Well Abandonment Forms
______ No Well Abandonment Forms are required at this time.
___X__ Well Abandonment
Forms are enclosed.
Copies of the well abandonment form(s) shall be included within
Results of Land Use Disturbance
Example: A swale was installed the downgradient
leading edge of the CEA. Ground water elevation is located approximately
4 feet below grade however; it can fluctuate as high as two feet
below grade due to seasonal influences. The detention basin has
been excavated to approximately 3 feet below the original surface
grade. A ground water sample has been collected from the most downgradient
monitoring well. The results and associated QA/QC package is included
within this attachment. No contamination has been identified above
the Ground Water Quality Standards or the Surface Water Quality
Standards. In addition, the existing fate and transport model (CEA
model) for the ground water contaminant plume ensures that the remedial
action remains protective of the public health and safety and the
Results of Ground Water Analysis
Example: Since the establishment of the CEA
all contaminant concentrations in site monitoring wells have continued
to exhibit a decreasing trend. Contaminant concentrations were not
detected in Sentinel well MW-4. While the wells have not achieved
concentrations at or below the Ground Water Quality Standards the
reduction in contaminant concentrations is consistent with the existing
CEA model. The results and associated QA/QC package are included
within this attachment. Plans are proposed to collect at least two
rounds of ground water samples such that the time between sampling
events shall account for seasonal fluctuations in the ground water
table and the number of ground water samples. This will be conducted
within 120 calendar days after the projected expiration of the ground
water CEA pursuant to 7:26E-8.6(a) 7.
Name and Address Copy List
Final Version: 10/21/03
Creator: Gerald M.Hahn
[End of Document]