HomeMy WebLinkAbout1995-04-16 Soil ReportS -P TESTING, INC. Steven B. Schirmers — MPCA Ceit. No. 627
951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497.3566
April 16, 1995
Bryson & Myers
Cluster System
Big Island
Orono, Henn. Co., MN
This On -Site Sewage Treatment System is Designed for a Type 1, two
bedroom home for each site = 600 gal/day. Each site is an actual
Type 11, two bedroom. Designed in accordance with the Minnesota
Pollution Control Agency Chapter 7080 and loyal ordinances.
This system is designed as a cluster system due to very limited
space for adequately treating septic effluent. The proposed
system is a 10"dia. graveless trench located at cabin A, the
Bryson property. Recommend an easment & maintenance agreement
be made between the 2 land owners & the City of Orono.
The soils on this site are a clay loam. A seasonally saturated
layer of soil was found at 66" to 78", (mottled soil). The bottom
of the system must be located at least 3' above the seasonally
saturated soil.
The soils at a depth of 30" have a percolation rate averaging
15.6 min/inch.
A pumping chamber will need to be installed to lift the effluent
to the treatment area.
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.
Due to the system being seasonally used, the ta..ks must be insulated
to prevent freezing during winter months. The accumulation of
sludge should be inspected no less frequent than every three years.
The disposal of sludge should take place whenever the top of the
sludge layer is less than 17." below the bittom of the outlet baffle
cit, why nr•:ar bottom of tho scum layer is less than 1" above the
bottom of the outlet baffle. Removal of septage shall include
complete removal of scum and sludge.
A water meter must be installed at each cabin to monitor the daily
water use.
Due to this site being the only area available for an On -Site Sewage
Treatment System, recommend to install low water use facilities,
1.6gal/flush toilets, low flow shower heads etc.
Bryson & Myers
Cluster System
Big Island
Orono
(2)
Keep all heavy equipment off of the proposed treatment area before
and after construction. The treatment area should be marked off
before construction. This Design is not valid & the system will
need to be relocated if failure to protect the areas proposed
for On -Site Sewage Treatment occurs.
With proper installation and maintenance, this system should
have no problem in treating septic effluent effectively.
Nothing other than gray water (laundry, showers, etc.) human waste
& toilet tissue should be disposed into the septic tanks. Garbage
disposals are not recommended. Excessive amounts of soaps, cleaning
agents & chlorine agents may kill the bacteria needed to treat
septic effluent. Additives are not recommended. Recommend to pump
& clean your tank through the manhole by a certified pumper every
year if you have 1 tank and every 2 years if you have two tanks.
Note: Uue to this site being very difficult for a pump truck,
recommend to inspect the tanks for the level of sludge as noted
elswhere in this letter.
��16
Steven B. Schirmers
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INDIVIDUAL Sl:%VAGl:'I'RL•A'I'MENT SYSTEM WORKSIME`1'
LAYOUT (Use other side)
1. Select an appropriate scale; one square = feet.
2. Slow pertinent property boundaries, right-of-way, casements.
3. Slaw location of house, garage, driveway, and all other
improvements, existing or proposed
4. Show location and layout of sewage treatment system.
S. Shaw location of water supply well.
6. Dimension all set backs and separation distances.
D-25
Gwrtd Se -age rkm 0 GA -0 ps Dq (sr."
FLOW
A.
Estitnatctl (,.00 glxl Cit-�,rc.:.,vc}K LtA1:t►1�
r�F•tter
measured ---- x 1-r- gpd �tv �- y s•..1)es
erg
SEITIC TANK VOLUME
It.
_ - Jno p gallons.
Type IV
SOILS (Site evaluation data)
C.
Depth to restricting layer = 51-(.4'(0 1. -(." feet
D.
Maximum depth of system C - 3 ft = 'A . S S feet
E.
Percolation rate P�- C. _ MPI
F.
SSF /,b7 sq f /gpd
ata
TREN =11 BOTTOM AREA
It.
For trenches with 6 inches of rock below the pipe:
212
A x F = (&Q_ x 4th =/V_& sq ft of bottom area
1.
For trenches with 12 inches of rock below the pipe:
315
AxFx0.8=,_x__x0.8=_.sghofbottom area
I.
For trenches ,with 1S inches of rock below the pipe:
150
AxFx0.66= x x0.66=_sq It of bottom area
K.
For trenches with 24 incites of rock below the pipe:
6
AxFx0.6= x_x0.6-._sgftofbottom area
523
BED BOTTOM AREA
L
For seepage beds with 6 or 12 inches of rock below the pipe;
luso
15xAxF= 1.5x_x_-_sgftofbottom area
370
ROCK VOLUME W CU FT
M.
Rock depth below distribution pipe plus 05 foot times bottom area:
675
M =Rock depth + 6 inches x Arca (H,I,I,L,K)
(—+05fl) x_= cu ft
ROCK VOLUME W CU YDS
N.
Volume in cu ft divided by 27
h1+27=cu yds _+27=_cuyds
ROCK WEIGHT
O.
Cubic yards times 1.4 = tons
NxIA=tons x1.4=_tons
DISTRIBUTION
(Check one based on slope)
_
Bed (less than 6% slope)
Trenches
_ Drop boxes (any slope)
Distribution box (level to slightly sloping)
TRENCH LENGT1f
P.
Select trenchwidth = �3,0_ It ° 10u-64-
0o-A.Q.
Q.
I)ivide bottom arra by trench width: (11, 1, I, or K) + P=
lineal feet
Its + ,? =Mj lineal feet
LAWN AREA
R.
Select trench spacing, center to center - jo• feel
C
t h111irIv trench --i in^ by line feet R x 0 - s9 ft of I.n,•n arca
I
- -- %. -- — -- _' sq It
LAYOUT (Use other side)
1. Select an appropriate scale; one square = feet.
2. Slow pertinent property boundaries, right-of-way, casements.
3. Slaw location of house, garage, driveway, and all other
improvements, existing or proposed
4. Show location and layout of sewage treatment system.
S. Shaw location of water supply well.
6. Dimension all set backs and separation distances.
D-25
Gwrtd Se -age rkm 0 GA -0 ps Dq (sr."
MMYc.ma.
�(r
C.�.��
Iledrooms))
r�F•tter
erg
Type 1
T)pr 0
Type 01
Type IV
Ik&oM4
5 or 6
1.500
2.250
7 or 8
2
300
223
110
ata
3
450
300
212
•
a
rao
315
256
•�
5
150
450
294
6
900
523
332
re
7
luso
600
370
•��
t
1200
675
409
Natnba
Of
MMYc.ma.
�(r
C.�.��
Iledrooms))
r�F•tter
2 or less
750
1.125
3 or 4
1.000
1.500
5 or 6
1.500
2.250
7 or 8
2.000
3.000
over 9
See fir. C.6
(x 1.5)
6 inches= 0% Reduction"
12 inches= 20% Reduction
18 inches= 34% Reduction
24 inches= 40% Reduction
• sizing for gravelless trench
6-24 inch
Below the
11
3�t
o
tti %.o 1.
uvavw. Figu►c D-26
Z)m"
n...t....
Uv
r�F•tter
a"
nd
—
1%05
0�
110
.1bsW-
t;�
1p
O4O
ttoIS127
010
16to30
167
Oj0
31to4S
200
030
Kto40a
210
0.45
S.a 1r'wa tat � ww � twr � wf V rl
6 inches= 0% Reduction"
12 inches= 20% Reduction
18 inches= 34% Reduction
24 inches= 40% Reduction
• sizing for gravelless trench
6-24 inch
Below the
11
3�t
o
tti %.o 1.
uvavw. Figu►c D-26
Z)m"
WIZSLLLCMN PRI)CEDURE-
A. Determine pump capacity:
Gravity Distribution
1. l0inimum suggested is 600 gallons per hour (10 gpm) to stay ahead of
water use rate.
2. Maximum su�ivcry to a drop box of home system is 2,700
gallons per ho L(45 gpm) l Frevent build-up of pressure in drop box.
Pressure Distibution
3. a. Select number of perforated laterals _
b. Select perforation spacing = feet
C. Subtract 2 fL from the rock layer length.
- 2 If: -' feet
d. Determine the number of spaces between perforations.
Length perf. spacing = _ ft.4----ft--- spaces
C. _spaces+ 1 = - = perforatiotsllateral
f. Niultiply perforations Tier lateral by number of laterals to
get total number of perforations. u, x t��_ perforations.
g' --"Ww x a .t:.i -- 9pm-
SELEM'D PUMP CAPACITY 4 ' gpm "Ak .
B. Determine head requirements:
1. Elevation difference between pump and point of discharge.
IS-- feet
2. If pumping to a pressure disWbutlon system, five feet for pressure
mluired at manifold if gravity system, zero.
feel
3. Fnction loss
a. Enter friction loss table with Rpm and pipe diameter.
Read fnction loss in feet per 100 feet from table.
F.L. = ' •- ^ r ft./ 100 ft of pipe
b. Determine total pipe length from pump to discharge
point. Add 25 percent to pipe length for fitting
loss, or use a fitting loss than. Equivalent pile
length - 1.25 times pipe length =
x115=_vs._feet
c. Calculate total friction loss by multiplying
friction loss in, ft/ 100 ft by equivalent pipe length.
Total fnction loss = '� `/_ x J 0 L-• l()0 = v feet
4 Total head required is the sum of elevation difference,
sp(etal head r quirenwnts, and total friction loss.
--1 S - + - --- ' 3
(I) (2) (30
(. i Al. Ill_\D _ _ Icct
C. I'untp selection
1. A pump trust be selected to deliver at least
ti a_),pm (Step A) with at least _i`d_ feet of total tread (Step l3).
1-A -C
F-17
[Y` r(AFOnAT!f)r tr . 11WO ATID LArraM
Rrquurd Pertoranon tftuhT
u! p alma per nunu!r (Rpml
lase harge
069
020
(len)
12
0.96
I.Oa
0.56
0.74
2.Ob
0.80
h(ti.I
� w \w.•
b. Use for all ether appliranots
0A8
18
Rrquurd Pertoranon tftuhT
u! p alma per nunu!r (Rpml
lase harge
069
020
(len)
12
0.96
I.Oa
0.56
0.74
2.Ob
0.80
1.04
a. Use for single famil% l:^:nes
b. Use for all ether appliranots
I Pipe Length
Point of Discharge
T /o b
lacvaunn bdferenee
f'wnP ii
f -18b
1.5 Inch 2.0 inch 1.0 inch
rpm F.w, k- P. bund 1-1-
10
069
020
12
0.96
0.28
11
1.28
0.38
16
1.63
0A8
18
2.03
0.60
20
2.47
0J3
U.11
25
3.73
1.11
0.16
30
5 23
1.55
0.23
35
790
2.06
0.3()
t:.;i
OaS
50
3.99
0 58
55
4.76
0.70
60
5.60
0.82
CIALTIFLVA'i'l(m J UU62/ I,�'l.: of soil
Location or Project Bryson & Meyers, Cluster System, Big Island Orono
Borings made by S -P Testing, Inc. Steve Schirmers Date 8-15-94
Classifiction System: AASIIu USDA -SCS X. Unified Other
Auger used (check two): (land X or Power , Flight or Bucket X
Depth, Boring number ^ 1 Depth, Boring number 2
in In 108.2
feet Surface elevation 103.4 feet Surface elevation
0 Topsoil dark brown loam 0 Topsoil dark brown loam
0 - 6"
0 - 8"
Brown loam
Brown clay loam 6" - 1-1/2'
Brown clay loam
2 - 841 _ 2'211 2 -
1-1/2'
3 -
4 -
5 -
6 -
Brown loam
2.'2" - 6-1/2'-mott
7 - Rusty olive brrwn
loam
End of boring at _ 8' feet.
Standing water table:
1�1•r!,n1!t .l1 fef'1 (�r .?�.�,t F1.
a Lul hc,rincj.
Not lu went in hole X
Mottled soil:
Observed at 6-1/2'
feet of depth.
Not present in hole _
Comments:
3 - I Brown loam strong
2-1/2' - 3'10"
Brown loam
3'10" - 6'2" -mot
Rusty olive brown
loam
_602". _ 8'
End of boring at 8' feet.
Standing wager table:
present r_ f.., or depth,
11c:ut ts: tt,'1 I/ori"y.
Not present in hole X
Mottled soil:
Observed at 612" feet of depth.
Not present in hole`
Comments:
I qq
tL'RT11 IC�S'I'lt)1; d UUI,Z! l.0 :; cit Soil_ 13ur iny:;
Location or Project Bryson & Meyers, cluster system , Big Island Orono
Borings made by S -P Testing, Inc. Steve Schirmers _ Date 8-15-94
Classifiction Syatem: AAS1I0__; USDA -SCS X Unified Other
Auger used (check two): (land X , or Power , Flight or Bucket X _
3 Depth, Boring number 4
Depth, Boring number P g
in in 106.1
feet Surface elevation 104.2 feet Surface elevation
0 - - -- — 0 - _-• -•• •-
Topsoil dark brown loam Topsoil dark brown loam
0 - 10" 0 - 10"
-
Brown clay loam
Brown clay loam
2 - 2 10" - 2'4"
3 - 3 -
10" - 3-1/2'
Brown loam w/traces
of sand
4 - 4 -
Brown loam
5 - 5 -
3-1/2' - 5-1/2'-mottl d 2'4" - 5 -1/21 -mottled
5-1/2 lusty olive brown loam 5-1/2'
6 _ 6 - 5-1/2' - 6'
Rusty olive brown
loam
7 - 7 -
5-1/2' - 8'
E'nd of boring at _Q_L_ feet.
Standing water table:
,,, f.., , • r„
how :; of tet r,ot iny.
Not present in hole——x
Iottled soil:
Observed at 5-1/2'Ieet of depth.
Not present in trole—_
Comments:
8 -
End of boring at S' feet.
Standing water table:
r i �• ,� nt ct ,.,.t of depth,
hours after boring.
Not present in hole X
Mottled soil:
Observed at 5-1/2' feet of depth.
Not present in hole
Comments:
CI:R'I'.I:nur�,1 l
1'HICOLATION •I ESI. DATA S111•:I"A
S -l' Testing,Inc. 8-16-94 9:15 K" 111
1'cri,Ldl•nI 1; ••t I; adnlir. n1,u1: hs ----- ---t,n _-------`r.aUng at II.n,
flryson6Meyers,Dig Island 1 8-15-94
lest 11,11e I-K.unr11 _ -- —• 1101c nun11><r ---. Date hole %%a%prcparctL-. ---
Depth of h,1lr h,1n•uu 30 unites. Diameter of hole--.- --
.N,111
1,111 dh1.1 Iran ICN htdc
Depth. melte% Sud Irsturc
0 - 8"
8" - 26"
26" - 30"
Topsoil dark brown loam
Brown clay loam
Brown loam - - — - ---- - - �----
Method of scratching sdewall-fie
Depth of gravel in bollum of hole 2 Inches
8-15-94 2:30ptn 12
Date and Mout of initial walet Idling_ I k pth of lmual w,ucr (111,,,: _---_nKhes above hole bulatnt
Method used to maintain at least 12 inches of water &pol 1n hole for at Icast 4 hours Automatic siphon _ _
Maximum water depth above hole bultom during lest 6 inches
-- --- -
into
- -
1 title
Interval.
Honore%
-
Afcawlellient,
Incite%
- --- - t
Drop III Willer
h•vel. Inches
I'crenlaliatt
rale•
minutes per
Inch
Remarks
9:00
ill
b
9:159:45
—_pref
"
3-1/4
9.2
30 min
9.'�"i~
_ 10:27
"
3-1/8
9.6
-- " "
1!1:32
11:02
"
3-1/8
9.6
Percolation tate = 9.5 minutes per inch.
CI.131T.100627
111-IRCOLATION TEST DATA SHE B'1'
r�
S—P Testing, Inc. 8-16-94 9:16
pn �Lnnn_ aL-- p
1'ctraLtuunst tetradinttt'�
g. made hr y�t 8-15-9 4
Dryson&Meyers,Dig Island 2
Test hole location . Hole numbler —. Date hole wa< Incl,•uc.L-- _--.---
Dcpdt til Iwlc iwtiunt
306
inches. Diameter of hole—'nches
sell Bala Icon+ te%I little:
WIWI, i1'chc% still te"Iut:
0 - 6"
6" - 18"
18" - 30"
Topsoil dark brown loam
Brown loam
Brown clay loam
Method of scratching sidewall Knife
Depth of gravel in bottom of hole 2 u:ehc�
8-15-94 2:30ptn 12
Date and hour of initial water filling—.-. --- _ --. Dcl,th of initial water '11111'1• -__ +nchcs above hole Ixtttan
Method u%cd tet maintain at Ieast 12 inches of water depth in hole fog at least 4 hours Automatic siphon
6
Maxintunt water depth above hole button► during test inches
; intc
—_--Tune -
interval.
minutes
-----_-- -----
Mca.urcment.
Inches
--------•-- --
Ulop In water
level. inchc"
_ 1-1/4
TPercolation
rate.
minutes per
inch
Remarks
24.0
-- —
30 min
Water reglaining
9:16
9:58
10:31
in test
9:46
10:28
11:01
hole
6
Percolation rate = 2 4 .0 minutes per inch.
CERT.100627
PERCOLATION TEST DATA SHEET
917
1'erculatiun test rcaJutEs made b�• S—D' Testing, Inc* 8-16-94 on starting al p tn.
'`"" 8-15-94
Test hole Irxauor ole number
Dryson&Meyers, Big Isla 11 3 • Date hole was prepared
Depth of hole bottom 3 0 inches. Dianxter of hole_
6 inches
Soil data (roll, test 1101c.
Soil texture
Depth. inches
— 10" To soil dark brown loam
0
10" — 30" Drown clay loam
Method of scratching sidewall
Depth of gravel in bottom of tole 2 inches 12
8-15-94 2:30pm iriches above hole bottom
Date and Dour of initial water filling . lepth of initial water filling
..,,.......
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours %+u ���l�a �-� L—.. ..--
Ptaximum water depth abuvc 1K,le Nutom during tcsL 6 inches
Percolation
?ime rate, Remarks
interval,TNIcasurentent. Utop in watctmxlevel. inches minutes Ixr
n►ututesinches inch
9:00 prefill 6 5/16
2— 13.0 30 mi
—
9:17 9:47
„ 2-1/4 13.3
9:59- 10:29
10:30 11':00 2-1/4 13.3
petcolation rate a 13.2 .ninutes per inch.
12009 West Hilloway Road
Minnetonka, Minnesota 55305
October 23, 1995
Mr. Stephen Weckman
On -Site Systems Manager
City of Orono
P.O. Box 66
Crystal Bay, Minnesota 55323-0066
Re: On-site System, 660/670 Dig Island
Dear Mr. Weckman;
In accordance with the condition on your approval of the design
for the reference system dated 6/29/95, a copy of the "Septic
System Construction, Easement, and Maintenance Agreement" dated
8-21-95, and executed by the two property owners, is enclosed
together with a copy of an as-b>>ilt survey of the installed
system by McCoombs Frank Roos Associates, Inc. dated 9/29/95.
The survey is an attachment to the Agreement.
We trust that this submittal satisfies the condition of the
approval and ask that receipt be acknowledged by signature to a
copy of this cover letter.
Thank you for your consideration.
Very truly yours,
rl
Mason C. Myer
enc: Agreement 6/29/95
Survey 9/29/95
cc: W. Bryson Listed a closures received:
E. Prince -
By:
Position: l
file: sepsys Date: �7—_