HomeMy WebLinkAbout09-09-1981 Soil Percolation Test31"L":, 3VAL IIA -'I M.' iZP O ;I'- —
LACILU'- R:-. M P 30P 2TY / 1
0110rro, :dl G SO �A C'1 T (F r,,,?
n. 0
9-9-81
On august 29, 10,bl percolation testing was done and soil bor-
ings taken on each of the 3 proposed lots on the above property. Lot
1 was tested for both a primary and alternate site with 6 percolation
holes tested and 3 soil borings. Lot 2 which contains the main house
teas tes roc; only for an alternate site should tine present system ever
fail and thus 2 percolation holes were tested and 1 soil boring ta-
ken. Lot 3 was tested for a primary site for the existing guest house
near the lake since the present system is non -conforming and thus 4
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)r standard drainfield
systems. Lot 2 was tested north of the main house and a little east
of the present tanks and drainfield area. However, should this area
ever be used, a pump and pumping tank would be required to serve the
higher lying new drainfield 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 there.
The drainfield area for the guest house on lot 3 has a very
fast percolation rate and thus a smal-er drainfio:.d area wiles ba
requir,3d. _'.1e area tented was above the swale so as not to allow run-
off water to enter. However, it appears some underground water pipes
and electrical wires run through or near this area and these nuat be
located and possibly relaid during drainfield construction.
If any other irfor-ation is needed please notify me.
Sincerely,
P RCOR,
I1 11C.,
1 -:ark 3. Gronberg, I'..�.
S.
LAC Lul R221) ?3OP :RiY
LOT 1, BLOCK 1
Percolation Rasults
Hole No.
Material
P-1
Lt. Brown Loam
P-2
Lt. Brown Loam
P-3
Brown Loamy Sand
-4
Lt. Brown Loam
P-5
Lt. Brown Loam
P-6
Lt. Brown Loam
Percolation Rate
16.0 I4in. /inch
10.9 Idin, /inch
4.3 1:4-n./inch
30.0 Min. /inch
11.4 Min. /tnah
26.7 Nin./inch
The average percolation rate is 16.6 minutes per inch.
Soil Borings
J.B
Deothsft Bate al
0.0-1.8 Black Loam
1.8-3.0 Gray Loam
3.0-6.0 Brn. Fine Loamy Sand
6.0-7.5 Lt. Brn. Loam
7.5-8.0 Fine Yellow Brn. Sand
No mottled soil or water table after 24 hours.
S.B
Do$th(ft.) Material
0.0-1.2 Black Loam
1.2-2.5 Dk. Brn. Sandy Loam
2.5-4.5 Lt. Brn. Clay Loam
4.5-7.0 Coarse Brn. Sand
5.0-8.0 Lt. Bra. Clay Loam
No mottled soil or tratf!r table after 24 hours.
S.B. ;` 3
Depth(ft.)
Mpt_ a ia1
0.0-0.8
Black Loam
0.8-1.8
Gray Sandy Loam
1.8-5.0
Brown Sandy Clay
5.0-8.0
Bro:.rn Clay Loam
No mottled
soil or grater tablo after 24 hours.
0
P�OPFitTf' BATE:
L
vi
VA
o
� Its,• � ..r'
T'
r , „ • / 0
TO: Jeanne A. Mabusth, Zoning Administrator
FROM: Michael P. Gaffron, Septic System Inspector
DATE:' September 16, 1981
SUBJECT: #642 Lachlan Reed, 1500 Brackett's Point Road -
Subdivision
I have reviewed this subdivision and wish to make the following
comments:
Lot 1 has an acceptable percolation rate and depth to saturated
�a�0 zone for a standard system. When construction plans are made,
care should be taken to keep the system above approximately
the 936 contour line.
�
p Lot 2 has adequate area for a future septic system should the
1►� existing system fail.
Lot 3 - The guest house cottage should have a new septic system
15OP 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
would be 250 square feet. Since this building receives inter-
mittant usage, the Orono Code requirement of 600 square feet
for each dwelling unit can be waived.