HomeMy WebLinkAbout1983 Site Evaluation ReportSITE EVALUATION REPORT
FOR WILLOW PROPERTIES
( GARY PETERSON )
ORONC* MINNESOTA
5-30-63
On May 4-30f 1963 six percolation holes were tested on
each of 10 lots and 3 soil borings taken on each lot as well
in accordance with the provisions of Individual Sewage Sys-
ten Treatment Standards (WFC>40) adopted in 1976 by the Minn
esota Pollution Control Agency. In addition, other soil bor
ings were taken in lower areas to determine the possibility
of obtaining more than 10 lots but water tables were found
to be very high and the soils were found to be very slowly
permeable.
According to the soils maps and the Information we ' '
found in the field, the higher areas had very good soils for
drainfields while the lower areas anC. swales had extremely
poor soils for drainf ields. Thus, we ":ended to stick to the
higher areas while still leaving room for ample building
sites. However, once houses are proposed to be constructed
it mighc be desired to shift some of the drainfleld areas.
Then n w testing would bo required and it would be advise-
sble to keep us high up on the kndbs as was previously tes
ted.
Each site tested would be acceptable for either a stan
dard or shallox^ trench drainfield system and is noted on the
attached drawing. It also night be necessary to use inter
ceptor drains to divert runoff water but this would be men-',
tioned in the system design for the Individual houses once
they are reedy for construction. If any additional informa
tion is needed, please contact me.Sincerely,
PERCOR, INC.
'Mark S. Gronberg, ^E.
WILLOW PROPERTIES \
LOV 1, BLOCK 1 )
Fercolatibh Results
Hole No.Material percolation Rate
P-1 Dk. Brown Loam 24.0 Min /Inch
P-2 Brown Clay Loam 30.0 "
P-3 Yellow Brown Loam 20.0 "
P-4 Yellow Brown Loam '24.0 •'
P-5 Yellow Brown Loam 21.8 •'
P-6 Yellow Brown Loam 12.0 "
The average percolation rate is 22.0 minutes\ per inch.
Soil BorinRS
S.B. # 1 S.B.# 2
De'pth(f t.)
0.0-0.6
0.6-2.6
2.6-6.0
Kottled soil
table at 3*5
S.3. # 3
Det)th(ft.)
0.0-0.5
0.5-1.0
1.0-2.5
2.5- 6.0
Material
Black Loam
Dark Brown Loam
Lt. Brown Loam
^3.5~f^t a
feet~^Tter 2k
and water
hours.
Material
Black Loam
Dk. Brown Clay Loam
Brown Loam
Lt. Brown Loam
Kottled soil at I+'f* feet and water
table at I;.9 feet after 2k hours.
Depth(ft.)
0.0-0.8
0.8-3.0
3.0-6.0
Kottled soil
water table ,
2k hours.
Material
Black Loam
Yellow Brown Loam
L^_3x’own Loam
„feet and
it^.6 ffeet after