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PAGGI & MARTIN
Consulting Engineers & Land Surveyors
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54-56 Main Street
Poughkeepsie, New York 12601
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November 1, 1995
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Town Board
Town of Wappinger
P.O. Box 324
Wappingers Falls, New York 12590
Attention:
Reference:
Constance O. Smith, Supervisor
Atlas, Hilltop and Rockingham Well Fields
o Chlorine Retention Facilities
o Groundwater Under the Influence of Surface
Water Determination
Dear Supervisor Smith and Board Members:
As per the enclosed correspondence from the New York State
Department of Health and the Dutchess County Health Department,
please be advised that the above referenced public water supply wells
have been determined to be not under significant influence of surface
waters.
As you may recall, we were awaiting this determination prior to
performing any of the necessary upgrading of the existing chlorine
detention facilities.
Plans and reports for chlorine detention facilities at the Hilltop and
Rockingham well fields were previously submitted to, and approved by
the Dutchess County Health Department on June 14, 1990 and March
17, 1989, respectively. No plans were ever submitted for the Atlas well
field.
We would recommend the following:
1. Plans and specifications previously submitted for the
Hilltop and Rockingham chlorine detention facilities be
updated to 1995 standards and re-submitted to the
Dutchess County Health Department for approval.
2. Plans and specifications ensuring that all wells at the
Hilltop and Rockingham well fields are above the 100
year flood elevation be prepared and submitted to the
Dutchess County Health Department for approval.
JosephE. Paggi,Jr., P.E.
Ernst Martin, Jr., P.E., L.S.
@ printed on recycled paper
Town Board
RE: Well Fields
- 2 -
November 1, 1995
3. Pending the results of the upcoming aquifer analysis of
the Atlas well field, plans and specifications be
generated for the installation of adequate chlorine
detention facilities. The results of the aquifer analysis
will dictate the nature and extent of the proposed
chlorine detention facilities.
It should be 'noted that the Dutchess Coumy Health Department ha~
requested that the Town respond with a schedule to perform the above
work.
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,
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''':''},Y'l~j October 24, 1995
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Dutchess
County
Department
of
Health
William R. Steinhaus
County Executive
"lichael C. Caldwell, .\ID, ~D'H
Commissioner
387 Main Street
Poughkeepsie
New York
12601
(914) 431-1500
Fax (914) 431-1537
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Supervisor Smith and Town Board
Town of Wappinger
P,O, Box 324
Wappingers Falls, New York 12590
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Re: Atlas, Hilltop and Rockingham Wellfields
Groundwater Under the Influence of Surface Water Determination
Dear Supervisor Smith and Town Board:
This Department in conjunction with the New York State-DOH have determined that the
wells in the above referenced wellfields are not under significant influence of surface
water. Therefore, no special treatment systems are required at these wellfields,
However, the existing hypochlorite disinfection systems lack the facilities which would
provide a proper "chlorine detention time" for groundwater disinfection. This needs to
be corrected by the installation of chlorine detention tanks.
Plans and reports for chlorine detention facilities need to be submitted to this department
for review and approval. Other necessary improvements also need to be considered such
as ensuring that all wells are above the 100 year flood elevation.
Please respond with a proposed submission date for these documents.
If you have any questions, call me at 431-1644,
~ry truly r"e our,E
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Daniel O'Connor, P.E.
Senior Public Health Engineer
Environmental Health Services
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cc: Joseph Paggi, P,E., (w/enc:.)
Michael Tremper (w/enc.)
file (w/enc.)
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II'STATE OF NEW YORK
DEPARTMENT OF HEALTH
Office of Public Health
" University Place
Albany, New York 12203-3399
Barbara A. DeBuono, M.D., M.P.H.
Commissioner
f)aren Schimke
'Executive Deputy Commissioner
October 16, 1995
Daniel O'Connor, P.E.
Dutchess County Health Department
387-391 Main Mall
Poughkeepsie, New York 12601
Dear Mr. O'Connor:
I have reviewed the data you transmitted on the Town of Wappinger1s Hilltop,
Rockingham and Atlas well fields. Based on the tests that show no Giardia or
Cryptosporidium were detected and that the wells have been on line for years without a
reported outbreak, we can declare that the wells are not under significant influence of
surface water. This determination may be subject to revision if definitive guidance as to
what constitutes ground water under the significant influence of surface water is issued
by the United States Environmental Protection Agency.
We recommend that the standard thirty minute contact time be provided for
these wells with provision for expansion, should future United States Environmental
guidance on the Surface Water Treatment Rule necessitate additional contact time.
If you have any comments or questions concerning the above, I am available at
(518) 458-6742.
Sincerely yours,
~a~
George A. Stasko P.E
Senior. Sanitary Engineer
Bureau of Public Water Supply Protection