HomeMy WebLinkAbout1980-06-25 Site Evaluation ReportSITE EVALUATION REPOR?
LOTS 1 & 2, BLOCK 2
SWAN LAKE ADDITION
ORONO, MINNESOTA
6-25-80
On June 21, 1980 an area in the southwest corner of lots 1
and 2. Block 2 of Swan Lake Addition was tested for the suitabil-
ity of establishing a drainfield there sometime in the future.
Six percolation holes were tested and 3 soil borings taken in this
area.
Because of the evidence of a high water table in the soil
borings, the area was tested for a possible shallow trench system.
The percolation holes were dug 6 inches in diameter to a 30 inch
depth, while the soil borings were dug 6 inches in diameter to the
4 foot depth and 3 inches in diameter to the remaining depth. All
holes were dug by hand operated bucket type augers.
The sides of the percolation holes were scratched after dig-
ging and 2 inches of small rock was placed in the bottom of each
hole. Water was kept in the holes overnight and then tested the
next morning at 1i hour intervals for 4 hours. The average percol-
ation rate for the 6 holes was 17.0 minutes per inch which would
allow a shallow trench system to be constructed. However, the
trenches should not be constructed deeper than 1 foot to main-
tain a 3 foot seperation from the high water table. Also, an
interceptor drain shadd be installed on the south side to divert
runoff water from entering the drainfield.
Additional design information will be needed once the size
and location of the house are known. If any other information is
needed, please contact me.
Si�ncer�ely,
PERCOR, INC.
Mark S. G ronberg, P.E.
t
LOTS 1&2, BLOCK 2
SWAN LAKE ADDITION
ORONO, MINNESOTA
Percolation Results
Hole No.
Material
Percolation Rate
P-1
Brown Loam
14.1 Min./inch
P-2
Brown Loam
16.0
P-3
Brown Loam
20.9
P-4
Brown Loam
17.1
P-5
Black Loam
20.0
P-6
Black Loam
14.1
The average percolation rate is 17.0 minutes per inch.
Soil Borings
S.B.# 1
Depth(ft.) Material
0.0-1.2 Black Loam
1.2-2.2 Dark Brown Clay Loam
2.2-2.8 Brown Clay Loam
2.8 -4.8 Brown Loam
4.8-8.0 Brown Clay Loam
Mottled soil at 5.0 feet and water
table at 5.4 feet after 24 hours.
S.B.
Depth(ft.) Material
0.0-2.0 .Black Loam
2.0-2.8 Brown Loam Lc-c,.,:
2.6-6.0 Brown Clay Loam
!Mottled soil at 4.5 feet and water
table at 4.9 feet after 24 hours.
S.B.# 2
Depth(ft.)
Material
0.0-2.0
Black Loam
2.0-3.0
Brown Clay Loam
3.0-6.0
Brown Loam
Mottled soil at 4.0 feet and water
table at 4.3 feet after 24 hours.
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Certificate of Survey
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fur Thomas R. Smieja
of Lots 1 and 2, Block 2. SWAN LAKE AUDITION
Hennepin County. Minnesota
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1 hereby certify that this is d true and correct repre-
sentation of a survey of the boundaries of Let. 1 and 2, Block �.
SWAN LAKE ADDITION, the location of ai l e-I1 ,I. bul ldin(ls, It
any, thereon, and the proposed location of a pruposed building.
It does no* purport to show any other improvements or encroach
merits.
Scale 1' _ 60' COFFIN a GRU BERG, INC.
Date 3-25-88 / !:
o Iron marker 'Mark j- Gronbery tc. No. 12155—
Engineers, Land Surveyors and Nlanner•S
Long Lake, Minnesota