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PAGGI & MARTIN
Consulting Engineers & Land Surveyors
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54-56 Main Street
Poughkeepsie, New York 12601
9 14-47 1-78 9 8
January 10, 1994
Town Board
Town of Wappinger
P.O. Box 324
Wappingers Falls, New York 12590
Attention:
Constance O. Smith, Supervisor
Groundwater Under the Influence of Surface Water
Hilltop, Rockingham and Atlas Well Fields
Dear Supervisor Smith and Board Members:
Reference:
This letter is written to further advise you of the Town's responsibility
regarding the above referenced matter. As previously outlined in our
correspondence of February 6, 1992; March 13, 1992; February 1,
1993; and February 2, 1993; the Town will be responsible for
complying with the New York State Department of Health,
"Groundwater Under the Influence of Surface Water" rules as follows:
1. Detailed information and lab analysis must be
submitted to the Dutchess County Health Department
by June 30, 1994. That department will be the
reviewing agency, and will make the final
determination in this matter.
2. The analysis of each well field shall comply with the
enclosed flow chart as follows:
o Step 1:
Identify Source Type
All sources in questions are drilled wells.
o SteD 2:
Review Protection Criteria
All sources in question fail to meet State
protection criteria in that they are less
than 50 feet deep and/or less than 200
feet from a surface water.
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January 10, 1994
Page Two
Town Board
Town of Wappinger
P.O. Box 324
Wappingers Falls, New York 12590
Reference:
Constance O. Smith, Supervisor
Groundwater Under the Influence of Surface Water
Hilltop, Rockingham and Atlas Well Fields
Attention:
o SteD 3:
File Review and Sanitary Survey
o SteD 4:
Monitoring, Sampling and Analysis
Basically, Steps 1, 2 and 3 are completed, and would
just need to be compiled in report form. The Step 4
sampling and lab analysis still has to be undertaken for
the three wellfields.
3. Our previously submitted sampling protocol (dated
February 2, 1993) called for samples to be taken at
eight (8) groundwater sources and five (5) surface
water locations for a period of twelve (12) weeks.
The approximate cost for this work was estimated at
$34,000.00 for Central Wappinger Water and
$22,000.00 for Atlas.
Since the time of our original proposal, the New York
State Department of Health has indicated that a less
extensive testing program may be acceptable.
Although no set protocol exists at this time, the
Dutchess County Health Department is in the process
of formulating one, and it would appear to be much
reduced in scope and duration from our original
proposal. For example, rather than a twelve (12)
week duration, it may now be possible to conduct the
analysis during a 72 hour continuous pump test
period. Thus it can be expected that the previous cost
estimates will be reduced accordingly.
January 10, 1994
Page Three
Town Board
Town of Wappinger
P.O. Box 324
Wappingers Falls, New York 12590
Attention: Constance O. Smith, Supervisor
Reference: Groundwater Under the Influence of Surface Water
Hilltop, Rockingham and Atlas Well Fields
4. It should be noted that if any groundwater source is
found to be directly influenced by surface water, that
source will be required to follow the stringent "Surface
Water Treatment Requirements". This would require
that the source be filtered, or disinfected to comply
with State avoidance criteria.
This office is continuing to monitor the Dutchess County Health
Department progress in formulating a sampling protocol. It is our
recommendation that the Town undertake this sampling protocol as
soon as it is finalized, so as to meet the June 30, 1994, submission
deadline.
We would ask that the Board inform this office as to how they would
like to proceed in this matter.
If you have any questions or comments, please feel free to contact this
office.
Thank you for your consideration in this matter.
Very truly yours,
JP:law
cc: June Visconti
Joseph Incornato
Joseph Ruggerio
Robert Valdati
Albert P. Roberts, Esq.
Elaine Snowden
.
Obvious Surtaca
Sources:
Lakes. Reservoirs.
Streams. C(~'<s. .
Rivers. e::..
All Public Water I
Systems-
/.
STE'P .1-/laentity Source Type
I
I
Source- is Soring
Intiltration Gallery, or
Ranney Well
S/EP3
."Review System Fiie
and C~nduc::
Sanitary Survey
I
swrn Applies
I · ~- /. Source Intluenced by
. ~. Surtacs Water?
. Undec:ded..
'S;-cP4-
Canauc:: ?artic:.:late
Analysis. Monitor
Changes :r: Water
Quality, Temperature.
etc.
Summary ot FTndinos
EM IndiC4!e Source il
Yes I Influenced by Surla~e
Water ana Could
Camain Giardi4!
STEP 2.
8
I.
I
Scurc~ is Well
Well IS ?:':r~~ from
orrect' Sur1ac.. Intrunc.
SaS4d on Slat."
"tertIa
I
.~-8 ... ----
f
eo. o.
SvvrR Does Not Ap;:ly
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FIGURE "1 STEPS TO SOURCE CLASS1FICATION