HomeMy WebLinkAboutJESSE D NICHOLS LT 13N, c.U, ol ,s ,S/D
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duly i8, 1974
:,~r. Jesse [). Nichols
uem. ral Del ivery
Eagle Idvt~r, ~',~.
SU!~JECT: Lots 12 ' ' 13 Jesse D~ ~.Hci~ols Subdivisioi~
I)ear Mr, Hici~ols:
The .,e,..~,,u~lic welt se)wing this subdivision is located on 'Cne coFfee)on )~roperty
line het~leon the tuo subject 'lots. t'his subdivision is s~rved by i)ublic sewer.
In order to build on Che two ~u~jec~ lots, tae buildings must be at
forty (40)" ~ frorL the ~-~ell. There is a ~)rotective radius around tlis type
, ,~-, source of contanltnation ~.dcnin this radius~
~ u~ ~er pl umbi
~.~,~ radius b~y~cause of the ;~aste
bui l~li ngs cannot be l)~side ~ ~'-
Shot(Id you have further questions regarding this matter, please contact
undersigned,
Roll Str'ickl~n(~', R.S.
Chiof Sanitarian
RS/iw
cc: John Lee
ADEQUACY TEST
WATER AND SEWER INSPECTION
WELL INSPECTIONS AND
FLOW TEST
SITE PLANS
ROAD DEStGN
SOl L TEST
ON SITE WASTE WATER
DISPOSAL SYSTEM DESIGN
EXCAVATION WORK
ROBERT A. SHAFER
January 15, 1984
CIVIL ENGINEER
694-2979
Department of Environmen~l Conservation
437 E. Street
Anchorage, Alaska 99501
ATTENTION: Bruce Erickson
REFERENCE: The Nickies Subdivision Class B water system.
Request a waiver be issued for the continued operation of a Class B
water system located on Lot 13, Nickles Subdivision and serving the
North Slope Restaurant in Eagle River. This water system was modified
last summer and an analysis of the modification is included with this
letter. A Municipal sewer system was installed in Market Street
to the rear of the North Slope Restaurant between the restaurant
and the well scu~rce. This sewer system was installed last summer
and includes the manhole located approximately 110 feet from the
well source. In addition the Municipality required the North
Slope Restaurant to install a manhole at the rear of their facility
approximately 134 feet from the well source. It is these manholes
which require a waiver for the continued operation of the Class B
well.
Included with this letter for your review of the request waiver are:
A. A plot plan showing the asbuilt conditions as near as can
be reconstructed for the North Slope Restaurant and the
well source.
B. A schematic view of the existing pump house including
recommendations for modifications.
C. A copy of the Municipal drawings for the sewer system
which was installed last summe~2on Market Street to the
rear of the North Slope building.
SRB 196X EAGLE RIVER, ALASKA 99577
page two
North Slope Restaurant
D. An.analysis of the instantaneous water demand requirements
for the North Slope Restaurant and those for the other
facilities understood to be connected with this water
system.
It is felt that the existing water system and pump house arrangement
is adequate for the immediate needs of this system. We do not
anticipate any immediate possibility of failure: however, the
recommendations as shown on the schematic of the existing pump house
should be accomplished within the next sixty days. It is also recommended
that the North Slope Restaurant eventually be connected with a 2%
inch service line from the Municipality water main located in the
front of the building. It should not be necessary for this to be
accomplished immediately, however, it should be accomplished within
the next twelve months.
If we may provide any additional information necessary for your
review for this request please do not hesitate to contact us.
sin~, ~
cc: North Slope Restaurant
Analysis of exisling conditions associated with the pump house for
the Class B water system, Nickles Subdivision.
A 3600 gallon aluminum tank was constructed, understood to be dimensions
of 4' X 6' X 20' and buried approximately 6' below the surface under
the existing well house. This water storage tank should be acceptable.
The only real problem associated with aluminum is its ability to
with stand corrosion. The aluminum will sacrifice itself to protect
any near by steel and if the water was heavily clorinated, any
free clorine gas would cause extremely rapid deterioration of the
inside of the tank. It is difficult to install enough zinc
anodis to protect an aluminum tank which is the normal method
for protecting a steel tank. It is our opinion that this system
as installed will be acceptable providing a water tight manhole
cover is installed in the tank for access to clean and inspect the
inside of the tank for deterioration. The manhole cover would not
have to be lifted under normal conditions except for cleaning and
inspection. The owner of the water system should be required to
enter into an inspection program to leak test the tank at least
semi-annually and to visually inspect the interior of the tank
at least annually. In addition all plastic pipe connecting the
water supply system within the pump house should be replaced with
galvanized steel with isolating unions. The tank vent should be
installed in a water tight manner at least 24 inches above the
outside grade. The sanitary well seal on the top of the well
needs to be sealed in order to prevent any possibility of contamination.
Instantaneous water demands for the North Slope Restaurant
Seats 250
T gpm/sea~ = 250 X 1 X 20 = 5000 gallons
~86 gal/each~
Storage at well head
1 - Aluminum tank underground - 3600 gallons
2 - X - TROL W - 252 tanks = 172
Total
Other facilities connected to this water system would have a minimum
flow requirement.
1 gpm/employee
1 gpm/employee
1 gpm/employee
1 gpm/employee
0.2/(100) 6000 sF )
(vacant)
2.0 gpm/exam room
(1) 3 gpm part~(auto) store
(2) 2 gpm laundry pick up station
(3) 6 gpm Real Estate office
(4) i gpm Liquor store
(5) 8 gpm Business Building (video,
Jewel, Hair, Liquor)
(6) 1 gpm vacant building (o~d Villa
Restaurant
(7~ 4 gpm pet clinic
25 gpm (20) = 500 gallons
The North Slope is supplied by 2-3/4 inch copper 9&ter lines
(per plumber)
3/4 inch copper line will flow approximately 15 gpm at 42 psi
using 150 feet of service and pressure at well head of 50 psi.
Maximum flow for a 20 minute period would be 20 X 15 gpm = 300 gallons
300 X 2 lines = 600 gallons
Storage is more than adequate considering size of service lines.
Minimum service line requirement would relate to a 2½ inch line.
Future consideration should be given to a new 2½ inch service line
off the existing 8 inch Municipality water main in front of this
building.
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