HomeMy WebLinkAbout12-14-1987 - septic system, 1st proposal • • I '� "moo 7c9 - a L--
S-P TESTING, INC.
951 KATYDID LANE
• ST. MICHAEL, MN 55376
497-3566
STEVE SHIRMERS
• December 14, 1987
•
John McDowell
Lot 4 , Block 1 •
Woodhill
Orono, Henn. Co. , MN
This system is designed for a Type 1, five bedroom home and in accordance
with the Minnesota. Pollution Control Agency standards WPC 40 and local
ordinances.
The soils on this site are typical of SCS soils mapped - HbC - Hayden loam.
A seasonally high water table was located at 28" , 38" , 40" , 42" , & 58" ,
(mottling) . Due to the seasonally high water table, a pressurized mound
system will need to be installed. The bottom of the rock bed must be lo-
cated at least 3 ' above the seasonally high water table.
The soils at a depth of 18" have a percolation rate averaging 19. 3 min/inch
and are adequate for treating septic effluent.
A pumping chamber will need to be installed to lift the effluent to the
treatment area.
The manifold and supply line pipe must have back drainage to the pumping
chamber. The distribution pipes shall have their ends capped. Be sure
the rock and sand fill material are clean. The sod layer below the
entire mounded -area must be turned over, just break up the sod, be sure
not to over work.
The power supply and switches must be located outside the manhole and
pumping chamber in a weather proof enclosure. A warning device must be
installed with a light and sound device, this is in case of a pump failure.
(Mercury floats are a good method) .
All neighboring wells are located more than 100 ' away from the proposed
treatment area.
Keep all heavy equipment off of the proposed treatment area before-and
after construction as much as possible. The treatment area should be
marked off before construction. •
With proper installation and maintenance, this system should have no
problem in treating septic effluent effectively. '
It is recommended that,the septic tanks be pumped every 2 years.
Soil and Percolation Tests ' ,.4! •
Steven B. Schirmers
Septic System Design
SBS/ds
L-13
CERTIFICATION # 00627 Logs of Soil Borings
' Location or Project Lot 4, Block 1, Woodhill , Orono
Borings made by S-P Testing, Inc. Steve Schirmers Date 12-7-87
Classifiction System: AASHO ; USDA-SCS X ; Unified ' • Other
Auger used (check two) : Hand X , or Power , Flight , or Bucket X
Depth, Boring number 7 Depth, Boring number 8
in in
feet Surface elevation 99.7 feet Surface elevation 99 . 1
0 - 0 -
Topsoil dark brown loam Topsoil dark brown loam
0. - 10" 0 - 8"
1 - Dark gray brown loam 1 - Dark gray brown loam
10" - 114" 8" - 1-1/2'
2 - Brown sandy loam 2 - Yellowish brown loam
3 _ 1 ' 4" - 3 ' 2" 3 - 1-1/2 ' - 3 '
Olive3 ' 2" IMW9 3 ' 2"-mottling Olive brown
mo tlinc� san 3 - 3 8 si4Wy. loam 3 ' - 3 ' 10" loam
4 - 4 - Olive brown silty loam
Olive brown loam
3 ' 10" - 4 ' 10"
5 - 5 -
•
Olive brown loam
6 - 3 ' 8" - 6 ' 6 - 4' 10" - 6 '
7 - 7 -
8 - 8 -
End of boring at 6 feet. End of boring at 6 feet.
Standing water table: Standing water table:
present at • feet of Aepth, present at feet of depth,
hours 'after. boring. hours after boring.
Not present in hole X . Not present in hole X
•
Mottled soil : ' Mottled soil :
Observed at 3 ' 4•" .feet of depth. Observed at 3 ' 2" feet of depth.
Not present in hole Not present in hole
Comments: Comments :
L-13
CERTIFICATION # 00627 Logs of' Soil Borings
Location or Project Lot 4 , Block 1, Woodhill , Orono
Borings made by S-P Testi, Inc. Steve Schirmers _ Date 12-7-87
Classifiction System: AASHO ; USDA-SCS X ; Unified ; Other
Auger used (check two) : Hand X , or Power , Flight , or Bucket X
Depth, Boring number 9 Depth, Boring number 10
in in
feet Surface elevation 100. 4 feet Surface elevation 96. 3
0 - r 0 - -Topsoil dark brown loam Topsoil dark gray loam
0 - 10" 0 - 10"
1 - Brown sandy loam 1 -
10" - 1' 4" • Gray brown loam
10" - 1-1/2 '
Yellowish brown loam Yellowish brown clay loam
2 2 - 1-1/2 ' - 2' 2"
1' 4" - 2 ' 4"-mottling
3 - 3 -
' Yellowish brown loam
4 - Olive brown loam 4 -
2' 2" - 4 ' 10"-mottling
5 - 5 - Olive brown loam w/traces of
4' 10" - 5 ' 4" silty loan
6 - 2 ' 4" - 6 ' 6 -
. Olive brown loam
7 - • 7 -
8 - 8 -
5' 4" - 8'
•
End of boring at 6 feet. End of boring at 8 feet.
Standing water table: Standing water table:
present at feet of depth, present at feet of depth,
hours •after 'boring. • hours after boring.
Not present in hole X Not present in hole X
Mottled soil : Mottled soil :
Observed at 2 ' 4" feet of depth. Observed at 4 ' 10" feet of depth.
Not present in hole Not present in hole
Comments: Comments:
L-13
CERTIFICATION # 00627 Logs of Soil Borings . . - •
' Location or Project Lot 4, gl;ock 1, Woodhill , Orono
Borings made by S-P Testing, Inc. Steve Schirmers Date 12-7-87 •
Classifiction System: .AASHO ; USDA-SCS X ; Unified ; Other
Auger used (check two) : Hand X , or Power , Flight , or Bucket X
Depth, Boring number 11 Depth, Boring number 12
•
in in
feet Surface elevation 98 ' 3 feet Surface elevation 97.1
0 - 0 -
Topsoil dark brown loam Topsoil dark brown loam
0 - 8"
0 - 10" Dark gray brown loam
1 - Dark „gray brown 1 -
10 - 1 2 . loam 8" - 1' 2"
• Yellowish brown clay loam
2 - Yellowish brown loam 2 - 1 ' 2" - 2 ' 2"
Yellowish brown loam
3 3
1' 2" 3 ' 4"-mottling 2 ' 2" - 3-1/2' -mottling
• Olive brown loam
4 Olive brown loam 4 3-1/2 ' - 4' 2"
w/traces of silty loam
st 58"-72" Olive brown silty loam
5 - • 5 -
4 ' 2" - 5-1/2 '
6 - 3 ' 4" - 6' 6 -
Olive 5-1/2 ' - 6 ,brown loam
•
7 - 7 -
•
8 - 8 -
End of boring at 6 feet. End of boring at 6 feet.
Standing water table: Standing water table:
present at • feet of depth, present at feet of depth,
hours 'after boring. hours after boring.
Not present in hole X Not present in hole
Mottled soil : ' Mottled soil :
Observed at 3 ' 4" feet of depth. Observed at 3-1/2' feet of depth.
Not present in hole Not present in hole
Comments: Comments :
•
PERCOLATION TEST DATA SHEET
•
S-P Testing, Inc. 12-8-87 8: 35 '
on_ starting at
Percolation test readings made by p.m. .
lawo
Lot4,B1k. 1,Woodhill 7 12-7-87
Test hole location_ ,Hole number , Date hole was prepared •
Depth of hole bottom_ 18 inches,Diameter of hole 6 inches
Soil data from test hole:
Depth, inches - . Soil texture
0 - 10" Topsoil dark brown loam
10" - 16" Dark gray brown loam
16" - 18" Brown sandy loam
Method of scratching sidewall Knife.
Depth of gravel in bottom of hole 2 inches
12-7-87 2 : 30p.m. 12
Date and hour of initial water filling ,Depth of initial water filling inches above hole bottom -
Automatic siphon
Method used to mainti.in at least 12 inches of water depth in hole for at least 4 hours_
,Maximum water depth above hole bottom during test 6 inches
Time Percolation
Time interval, Measurement, Drop in water rate, Remarks
minutes inches level,inches minutes per
inch
8: 19 prefill 6
8 : 35 9 : 05 • " 1-9/16 19 . 2 30 min
9 : 06 9 : 36 •
9 : 47 10 : 17 • "
Percolation rat = 19 - 2 minutes per inch.
PERCOLATION TEST DATA SHEET
S—P Testing, Inc. 12-8-87 8 : 34 a.m.
Percolation test readings made by on starting at p.m. ,
Nate)
Test hole location Lo t 4 ,B 1 k 1 . Woodhill ,Hole number 8 , Date hole was prepared 12-7-87 •
Depth of hole bottom_ 18 inches,(Diameter of hole 6 inches
Soil data from test hole:
Depth, inches Soil texture
0 — 8" Topsoil dark brown loam
8" — 18" Dark gray brown loam
•
Method of scratching sidewall Knife
2
Depth of gravel in bottom of hole inches
12-7-87 2- 3 m 12
Date and hour of initial water Filling ,Dep of initial watgr fillinE inches above hole bottom
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon
,
,Maximum water depth above hole bottom during test 6 inches
Time Percolation
Time interval, Measurement, Drop in water rate, Remarks
minutes inches level,inches minutes per
inch
8 : 19 prefill 6
8 : 34 9 : 04 3-5/8 8. 3 30 min
9 : 07 9 : 37 3-1/2 8. 6•
"
9 : 46 10 : 16 •
3-3/8 8 . 9 "
8 . 6 ' I
Percolation rate = minutes per inch.
•
•
. •PERCOLATION TEST DATA SHEET 1
•
Percolation test readings made by S—P Testing, Inc. on 12—8—87 starting at 8 : 33
IiLus/
i Lot4,Blk. 1, Woodhill 9 12-7-87
Test hole location ,Hole number ,Date hole was prepared
Depth of hole bottom 18 inches,Diameter of hole 6 inches
1
Soil data from test hole:
•
Depth,inches • Soil texture
0 — 10" : Topsoil dark brown loam
10" — 16" ; Brown sandy loam ,
16" — 18" ' Yellowish brown loam
Method of scratching sidewall • Knife
2
Depth of gravel in bottom of hole inches
12-7-87 2: 30p.m. 12
Date and hour of initial water filling ,Depth of initial water filling inches above hole bottom ' '
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon
6
,Maximum water depth above hole bottom during test inches
Time Percolation '
Time interval, Measurement, Drop in water rate. Remarks
minutes ; inches level,inches minutes per
inch .. .
8: 19 prefill : 6 \
8:33 . 9:03 1 30.0 30 min
9 :08 9: 38 n n n - n n
9:45 10 : 15 "
1
•
y w
Percolation rate = 3 0. 0 minutes per inch. •
•
. PERCOLATION TEST DATA SHEET .----1
S—P , Testing, Inc. 12-8-87 8 : 32 a.m.
Percolation test readings made by on starting at p.m. .
Nam)
Test hole location Lot 4 ,B 1 k.1, Woodhill ,Hole number 10 ,Date hole was prepared 12-7-87 4
18 6
Depth of hole bottom._ inches,Diameter of hole inches 1
Soil data from test hole: i
Depth, inches Soil texture
0 — 10" Topsoil dark gray loam
10" — 18" Gray brown loam
Method of scratching sidewall Knife
2
Depth of gravel in bottom of hole inches • •
12-7-87 2 : 30p.m. 12
Date and hour of initial water filling , Depth of initial water filling ,inches above hole bottom
Method used to maintain at least 12 inches of water:depth in hole for at least 4 hours Automatic siphon
6 ,
• ,Maximum water depth above hole bottom during test inches•
•
Time Percolation •
Time interval, Measurement, . Drop in water rate, Remarks
minutes inches. level,inches minutes per
inch
8 : 19 prefill 6 . •
8: 32 9: 02 1-7/16 20 . 9 30 min
9 : 09 9: 39 • -" 1-3/8 21. 8 II
"
9 : 44 10 : 14 "
• •
I +
1
1
i
Percolation rate = 21 ' 5 minutes
per inch.
•
PERCOLATION TEST DATA SHEET "..--1
Percolation test readings made by ;S—P Testing, Inc. on 12-8-87 darting at 8:31
Giwo
Test hole location Lot 4,B1 k. 1, Woodhill ,Hole number 11 ,Date hole was prepared 12-7-87 i
Depth of hole bottom 18 inches,Diameter of hole 6 inches
Soil data from test hole:
Depth,inches Soil texture
4
0 — 10" Topsoil dark brown loam
10" — 14" Dark gray brown loam
i
14" — 18" Yellowish brown loam
1
'
/Method of scratching sidewallKnife
i
2
Depth of gravel in bottom of hole inches ;
12-7-87 2: 30p.m. 12
Date and hour of initial water filling ,Depth of initial water filling inches above hole bottom
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon
•
---4
• , ,Maximum water depth above hole bottom during test 6 inches ,
II
Time Percolation I
Time interval, •
Measurement, Drop in water rate, Remarks 1
,• minutes ; inches level,inches minutes per t
4 inch
8:19 prefill : 6 1
8:31 9:01 " 1-3/8 21.8 30 min
" " " " "
9:10 9: 40 4
9:43 10 : 13 " " " " II
i
r
•
•
• / • .
•
•
Percolation rate 21. 8 minutes per inch.
. PERCOLATION TEST DATA SHEET ,-`1
S—P testing, Inc . 12-8-87 8 : 30
Percolation test readings made byon starting at p.m. .
Test hole location Lot 4 ,B 1 k 1, Woodhill ,Hole number 12 , Date hole was prepared 12-7-87 • I
18 6
Depth of hole bottom inches,Diameter of hole inches
Soil data from test hole: .
Depth,inches Soil texture
n — R" Tnpcnil dark hrnwn lnam
8" i — 14" Dark gray brown loam i
14" — 18" Yellowish brown clay loam •
i
Method of scratching sidewall Knife i
•
Depth of gravel in bottom of hole 2 inches ••
Date and hour of initial water filling 12-7-87 ,uep l0?r��l water filling 12 inches above hole bottom
Automatic siphon
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours
6 -� .
• ,Maximum water depth above hole bottom during test inches
Time. Percolation '
Time interval, Measurement, . Drop in water rate, Remarks '
minutes • inches level,inches minutes per .
• _ inch 1 .
8 : 19 prefill • 6 1
• .
8 : 30 9 : 00 2-1/16 14 . 6' ' 30 min
9 : 11 9 : 41 ' " i 2 15.0 .
1
9 : 42 10 : 12 " " " " "
i
I '
•
1
.1 '
1
Percolation rate = 14 . 9 '• _minutes per inch. •
1
•
\ 1—
I
•
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• 1 ► -
SET- BACKS
• I\ 1�' 1 . I', i i°� aa` I
- . . - - . HOUSE. . . - • • • System must be:. .
Tank .2d from property lines >C - S -<t o�-1 tib SY�L w- - • - -r ,
-o)- T ' . - from wells • -
. 33 from bldgs. i
• �„ - - Treatment area ='from lakes, streams _ _
Treatment area _an.: from property lines NOTE: Power supply and 'switches must be located'in a
MA4-44e1-05 rnAx. " ! 'from wells weather proof enclosure outside the pumping chamber and manhole 1
. l3acrF,« - :from bldgs.
r -, • La from trees ! u SOIL BORING ELEVATIONS
3amin. - 4
IT- �, ' • I '-L TH¢,EL.-ML2. <1-1-1-.1A- 9' .1
= "da.sup _Y_2Pe TH..t EL.-ate•1
/ .
! grade G % . . �-
Tank Tank TH. 9EL.-Ls2��f
•
Drop to Tank PRESSURE DISTRIBUTION MOUND SYSTEM EL.,3 ,3
TH"to
Min. i"to 8' I Pumping I TH`►tEL.-3 .3
4.
Max.I,ito 4' Y--- ---- ----? -VA 1.-N.Y--S -O(.L) Chamber ELEVATION at PROPOSED PUMPING
4"to 6"dia.pipe CHAMBER- 92,C
1Piz°?os�p No,-1sc- 100.0
1 SYSTEM DESIGN -MOUND -
TYPE- , ..E_ BEDROOM , Average percolation rate t a.z min./inch (design.83 sq.ft treatment area per gal. of daily sewage flow) \
- '')So gal,/day x.83sq.ft/gal. c..a a sq.ft.of treatment area +I0%=ion 9 sq.ft.• ( - IOft.width= ,`< ft.length of bed area+side slope run '_ ._to I x. ..L height= _± _ft.x./..0_1ft.lawn.area needed')
Clean rock needed- ( , sq.ft.treatment area x ).oS depth cf rock?L'cu.ft=27=a'? cu.yds.(3/4"to 21/•2'dia. ,includes 2"of rock above pipe)
i Clean sand fill below rock needed RC,a. cu.yds. approx. , sandy loam bock fill.-50 cu.yds.approx., topsoil 6" 440 cu.yd. Au -. •c,->-.,.o T.) . 1,, •
Number of tanks required —, ist tank/.011c12 ,2nd tank oOOgot.minimms PLS Pti-:mP�►•}U c-N 1.rf-r-
1sv 7--�J\S�
Pumping chamber capacity- 25% of doily sewage flow of 2 gal.:l Y' gal.+reserve storage of fol/bedroom= '7SiJ gal.+pipe bock drainage—
PROPERTY OF: • . 4 IP P. -. -
of 15~i_gal./IOO lin.ft.of_�. dia. supply pipe, lin.ft.needed ISO , a') gal.•+manifold l ct gal./IOO tin.ft of »dia.pipe,h.ft needed ") , , ,gal. 9 cit-o�� l
total capacity needed 9ie7 gal.(plus area for pump) us rn,r. )aSD or,L �•<._ WOOD N.4ALL_ O?-o t-� o Y 1 Y1
4 - Distribution pipe 1 tta,dia. , 19I r-1 lin.ftIN, I »dia. perforations 4 "apart �} 4.1., , v�+ vt .
Pump size l h-hp. (pumpable capacity a17 gal. 4cycles/day) u bS4 a,-►r 1•+E' r' Qg-s-s5
1 S—P TEST/NG / C , .
Note : When constructing bed - , this area should be shaped Note: Distonce from treatment orea to neighboring wells—
• Designed 9y
to divert run-off from entering treatment area. w+- =•- K- ���,,u
. Date :. / /2 , PH. 612-497-3566 1