HomeMy WebLinkAbout1981-09-09 Soil Percolation TestilL-.
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Z172 3VALUATI01! aEPCH'i?
LACaUI R33D paOPSP-OT
oaoiio, MIini3S0TA
9-9-81
On August 29# 1901 percolation testing was done and soil bor
ings taken on each of the 3 proposed lots on the above property* <^oo
1 was tested for both a prinary alternate site with 6 percolation
holes tested and 3 soil borings* Lot 2 i/hich contains the nain house
was testod only for an alternate site shoiild the present systea ever
fail and thus 2 percolation holes v;ere tested and 1 soil boring ta
ken* Lot 3 was tested for a pzdmary site for the existing guest house
near the lake since the present system is non-oonfoming and thus I),
percolation holes were tested and 2 soil borings taken*
All areas tested yielded fast percolation rates and had no high
water table problem and would be acceptable f:jr standard dralnfleld
systems* Lot 2 tras tested north of the main hoxise and a little east
of the present tanks and dralnfleld ax*ea* However# should this area
ever be used# a pump and pumping tank would be reo.uired to serve the
hic^r lying new dralnfleld area*
Lot 1 should have no problems and probably could be served by
gravity flow depending on the exact location and elevation of a
future new house thez*e*
^Hie dralnfleld area for the guest house on lot 3 has a very
fast percolation rate and thus a smaller dralnfloid area will bo
required. 'i‘i<e area tested was above the swale so as not to allow run
off water to enter* however# it appears some xmdergroimd water pipes
and electrical \-rlres run through or near this area and these must be
located and possibly relaid during dralnfleld constniction*
If any other information is needed please notify me*
Sincerely,
P3RC0R, mCy ^
Kark 3* Gronberg, P.Z*,/'^
111^^LOT 2, BLOCK 1 1 M ^
^ PAWBiati grS^s\r} f fli^
Hole go, ^^^?yAa2L
Bm« Coarse Sandy Loan 1S#!> Mln#/lnoh
p.2 Brown Loan 30*0 Hln*/lnoh
fihq aTex^ge percolation rate la 21^*3 nlnutes per inch*
S.B, IP 1
Depth!ft,)
0.0-1.2
1.2-2.0
2.0- 5.0
5.0- 8.0
Soil Boria&
Haterial
Black Loam
Brown Clay Loam
Yellow Brown Loam
Brown Olay Loam
Ho mottled soil or water table after 2k hours.
P-1
P-2
P-3
P-i^
Ohe average
S.B, 1
Depth!ft,)
0.0-1,5
1.5-2.5
4.0-6.0
6.0-8.0
No mottled
S.B.JL2
Depth! ft.)
0.0-1.8
1.8-3.5
3.5-8.0
Uo mottled
LOT 3, BLOCK 1
Peroolation Results,
Brown Loamy Sand
Red Bm. Sandy Loam
Lt. Brown Sand
Brown Loamy Sand
percolation rate la 4.0 mlnutoa per inch.
Soil Boriiuta
l»laterial
Black Loam
Red Brown Sandy Loam
Brown Kedlum Sand
Brown Coarse Sand
soil or water table after 24 hours.
Material
Black Loam
Yellow Brown Loan
Ileditsa Brown Sand
soil or water table after 24 hours.
Pepoolation Rate
3.3 Hin./inob
7.3 Min./inch
0.2 Hin./inch
5.0 Hin./inoh
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TO:
PROM:
DATE:'
SUBJECT:
Jeanne A. Mabusth, Zoning Administrator
Michael P. Gaffron, Septic System Inspector
September 16, 1981
#642 Lachlan Reed, 1500 Brackett's Point Road
Subdivision
X have reviewed this subdivision and wish to make the following
comments:
Lot 1 has an acceptable percolation rate and depth to saturated
zone for a standard system. When construction plans are made,
care should be taken to keep the system above approximately
the 936 contour line.
Lot 2 has adequate area for a future septic system should the
existing system fail.
Lot 3 - The guest house cottage should have a new septic system
installed as long as continued use is desired. It may be
necessary to install new tanks, and a pump appears to be required.
Assuming a two bedroom house, the minimum design size of drainfield
%#o\ :d be 250 square feet. Since this building receives inter
mittent usage, the Orono Code requirement of 600 square feet
for each dwelling unit can be waived.
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