HomeMy WebLinkAbout1994-10-08 Septic System Soil Test ReportOctober 8, 1994
K -P Properties
3048 North Shore Drive
Wayzata, Mn. 55391
Swedlund
Septic
- Service
Re: Septic System Design for Lot 2, Block 1, Bayview Farms
Attached please find the septic system design for the above
mentioned property address. This design is for a five bed-
room house using 750 gallons per day. This design is for
a mound type septic system using all the materials listed
in the attached pages. A copy of the drawing for the
septic design is also attached. This design meets all
State and local ordinance requirements.
Sincerely,
Svedlund Septic Service _
SNcd1ui1d Septic Service • 05211 Laketu%n Ro.id • Clia,,W. MN 55-11S . .1-12 S'S55
STATE CI:RI'IflEp
2rperc -rest
dSoil Boring
[✓/Design
Swedlund
❑ Installation Estimate
Septic
- Service
Prepared For:
l� P. &C/ 4
�9(,a Nd 4,V6 No
T
Site Address:
.4v%
�A�/�J•t'ru ���t S
State Certified
Swedlund Septic Service • 9520 Laketown Road • Chaska, MN 55318 • 442-5855
MOUND DESIGN WORKSHEET
(For Flows up to 1200 gpd)
A. FLOW
Estimated -M gpd (see pages D-7 or I-3, 4, 5)
or measured gpd.
B. SEPTIC TAINK LIQUID VOLUMES
Z Zd' _ gallons (see pages C-3 or C-5)
C. SOILS (refer to site evaluation)
1. Depth to restricting layer = ZZ inches
2. Depth of percolation tests = / 2- inches
3. Percolation rate 2 3 mpi
4. Land sloop
D. ROCK LAYER DL%TE.tiSIONS
I. Multiply flow rate by 0.83 to obtain required area of rock
layer: A x 0.83 =
7W 20 gpd x O.83 sq. ft./gpd = 2Z sq. ft.
2. Select width of rock layer (10 feet or less) _ In ft.
3. Length of rock layer = area + width =
�� sq. ft. + lU ft. = 6_ ft.
E ROCK VOLUME
1. Multiply rock area by rock depth to get cubic feet of rock;
62,Zsq.ft.x' / ft. _(.ZZ cu. ft.
2. Divide cu. ft. by 27 cu. ft /cu. yd to get cubic yards;
(;?z cu. it. -# 27 = 23 cu. yd.
3. Multiply cubic vards by 1.4 to get wei ht of rock in tons;
? - c. -u. yd. x 1.4 ton,'cu. yd _A tons.
F
ADSORPTION WIDTH
Percolation rate in top 12 inches of soil is 2-9 mpi
2 Select allowab:c soi. loading rate from table on page E-16;
Vy- gpd / f t2
I Calculate adsorption width ratio by dividing rock layer
loading rate of 1.20 gpd/ft2 by allowable soil loading rate;
1 20 gpd/ft2 + (P0 gpd/ft2 = 400
Check this valtje on pine E-16.
4. Multiply adsorption width ratio by rack layer width to get
required adsorption width;
/O x I ft=eft
D-7
1
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Rock Bed
.3.3f3 ♦j 3ti dth SIP'
F.FP % 5-M
i Length• - 4
E-16
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DOWNSLOPE DIKE WIDTH
If landslope is 3% or more, subtract rock laver width from
adsorption width to obtain minimum downslope dike toe
zv ft -1g, ft= /t, ft
Calcul..: mound height at edge of rock laver on downslope
side;
a. Determine depth of dean sand fill at upslope edge of rock
layer: Separation +, s feet
b. Multiply rock layer width by landslope to determine drop
in elevation; Slope Difference
/0 x 'I % + 100 ft
c. Add depth of clean sand depth of clean sand for
separation at downslope edge to depth of rock layer to
depth of soil backfill to get mound height at downslope
edge of rock la er;
f�Z h + ft + ! ft+ft = ft
d. Enter table on page E-18 with landslope and downslope
dike ratio. Select dike multiplier of S/ . ,
e. Multiply dike multiplier by downslope mound height
to get downslope dike width: 3 - q- x S.4-4'= Z-2� ft
g. Compare the values of step G.1 and Step G.21 Select the
greater of the two values as the downslope dike width;
Z 2 feet
h. Calculate upslope dike width using upslope mound
height and upslope dike multiplier from page E-18;
3.2 x3.lt = to ft
i. Total mound width is the sum of upslope dike width plus
rock layer width plus downslope dike width;
l0—h+ /O ft+ Zt ft= A— ft
E-20
I1d 1.....nw• u b
3. If landslope is 2.9 percent or less, basal width includes both the
upslope and downslope dike widths.
a. Calculate downslope dike width using steps G.2.a.
through G.21; feef
b. Calculate upslopedi idth using upslope mound
height and dike multi tier from Page E-18;
x \+1
ft
c. Add downslope di a upslope dike width to rock
layer width
ft + fft = ft ,
t-175
)1
•1
%TU ope
SI
41
71
31
/.1
Upliope
11
►1
71
el
• ".1).
C
10
40
s0
60
70
)J
40
1D
60
70
eD
)D/
417
f>•
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7y
191
If
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1"
LU
7A1
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111
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711
171
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7s1
100
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1.17
1077
111
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441
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1. Select number of perforated laterals 3
2. Select perforation spacing = --::?-_ ft.
3. Since perforations should not be placed closer than 1 ft. to
the edge of the rock layer (see p. E-14), subtract 2 ft. from the
rock layer length.
(;.2 - 2 ft. = 0 ft.
RM IL lava IenRN
4. Determine the number of spaces between perforations.
Divide the length above by perforation spacing and round
down to nearest whole number.
Length perf. spacing = 4'Oft. + I ft. = 20 spaces
(3) (2)
5. Number of perforations is equal to one plus the number of
perforation spaces.
20 spaces + 1 - Z I perforations/lateral
6. Multiply perforations per lateral by number of laterals to
get total number of perforations.
3 2/
Wer., x PeArilaenl a -6=- perforation.
7. Determine required flow rate by multiplying
number of perforations by flow per perforation
(see page E -17)
3 4
X _ gpm.
8. If laterals are connected to header pipe as shown on page E-
15, select minimum required lateral diameter from table on
page E-17; enter table with perforation spacing and number
of perforations per lateral. Select minimum diameter for
perforated lateral = X_ inches.
1) If perforated latera: system is attached to manifold pipe near
the cenwr, a,: on page E-12, perforated lateral length and
numl—r of perforations per lateral will t+e approximately one
half of that in step R. Using these %-Aues, select minimum
diameter for perforated lateral irnm page F.-17 as
inches.
E- 17a
Head Perfmatim dimmer (ir;4"
I.Oa
0.36 01-S
13
0.69 090
2.Ob
080 IN
2-S
389 117
3.0
0.99 129
4.0
1.13 1.47
_U
—1" 163
SUM 1.0 trot
et head tot readentul eyuems
Was 2.0 1 w of head for other establ"mmeb
E -17b
tt�dle — -er A eq IdA� M I�wl r
115inch
1.5 inch
m:r
23
14
to
24
3.0
13
17
26
33
12
16
23
4.0
11
Is
23
5.0
10
It
'-
F-15
v
E-12
.erv�
.00
ZUW_SELESTIDN PJLMEV_URk
A. Delereline pump capacity.
Gravity Dbtribution
1. Minimum suggested is ISM gallons per hour (10 gpm) to stay ahead of
water use rate.
2. Maximum suggested for delivery to a drop box of a home system is 2,71X1
gallons per hour (45 gpm) to prevent build-up of pressure in drop box.
Treasure Distribution
3. a. Select number of perforated laterals _
b. Select perforation spacing = ft.
c. Subtract 2 ft. from the rock layer length.
-3,-2ft. = ft.
d. Determine the number of spaces between perforations.
Length perf. spacing = ft. + _ ft. = spaces
e. spaces + 1 =perf4rations/lateral
L Multiply perforations per lateral by number of Wends to
get total number of perforations.
W=. x = perforations.
g r-= x VWTr-.I _- gpm.
SELECTED PUMP CAPACITY � gpm
S. Determine head nequirementst
1. Elevation difference betweenump and point of discharge.
_ I feet
2. If pumping to a pressure distribution system, add five feet fo: pressure
required at manifold
L_ feet
3. Friction lose
a. Enter friction loss table with gpm and pipe diameter.
Read friction loss in feet tx-r 1(X) fcrl from Gable.
F.L. - 3,q4 ft./I(U 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 chart. Equivalent pilx-
length -1.25 times pipe length =
x 1.25 - 7 fent
c. Calculate total friction loss by multiplying
friction loss in ft/ 1 t by equ� lent '}x length.
Total friction loss = 7 x r 4 +IM .� feet
4. Total head required is the sum of elevation differvixe,
special head requirements, and total friction loss.
S + S + Z/
121 130
TOTAL HEAD feel
C. Pump selection '%'
1. A pump must be.elected to deliver at least � gpm (Step A)
with at least _.I _1 feet of total head (Step 11).
END MWORArx1N OF a KAFOIWrrp la,T[r111t
B.m a..
tessod
r 41no"U pow (. lor -
taMe sw B.r.• . go one MGMM$ u....
Ve PW w A ... w�..'Mr M 1�'.iw+r
r Low a• lo tae.
�0""�"!'�.!rR�.t+-� .r 11.n Bar.•
fawlrNr� l/INM N
Clow aw11 tM BOOM d B.NMr
aww sM t.=+•w
bBrr r�=.r s�.rip.,
TAM F. OF ITRPORATION WO IARCPS IN CPM
Head
Perforatkxe dWnwW Orches)
0.69
0.20
1.111
036 0.74
1 s
OA9 0.90
2.ob
0 an 101
2.3
0.119 1.17
3.1
0.98 1211
IA
1.13 1.17
SD
126 lbs
11Use 1.0 foot of head for rrsldentl11l s7.tems.
bUse 2.1 het of find for other euabtisMvnu
Pipe Lcn`th
Purint of Discharle
E���
Elevatinn Di0crencel
Pump
F•111b
1.S inch 2.0 inch 3.0 inch
SPM hommt=.r.rie0n.rM.
10
0.69
0.20
U
0.96
0.29
IA
1.28
0.38
16
1.63
0.111
18
2.03
0.60
20
2.17
0.73
0.11
23
3.73
1.11
0.16
30
3.23
1.35
0.23
35
7.90
2.06
0.30
10
11.07
2.61
0.39
43
11.732i
0.11
,Tb
038
6
0.70
60
3.60
0.82
Determine Surface Arra
Rectangle = Arra = L x W
Circle = Area = It x (RadtusP
3.14xx__
square feet
__ square feet
Other = Get Surface Area from Manufacturer
square feet
T
w,drnl
1
I .cnph
Radius
x=114
2. Calculate Gallons Per Inch
There are 75 gallons per cubic fort of volume, therefore you must multiply the arra
times the conversion factor and 'ivide by 12 inches per foot to calculate gallons per inch
Area x 7.5 gpft' + 12 inchs per foot
X7.5+12 = j gallonslinch C.fG�C �l �ivt ��IA'c ter
3. Calculate Gallons to Cover Pump (with 2 inct". of water covering pump)
(Height (in) + 2 i hes) x gallons/inch 1t2)
(y +) x 7_ _ AW gallons
4. Calculate Total f umpout Volume
a. To maxze pump life select ump size for 4 1:15 pump operations per day.
gpd + 4 = �� gallons per dose
b. Calculate drainback
I. Determine total pipe length, /10 fact.
2. Determine liquid volume of pipe, (Zi gallons per IM fort.
3. Multi ly length b volume: Drainback qua ,tity =
LG' feet x 77a4 gallons/ 1(lO ft. _ _��%_ gallons.
Ettimslod Sewage Flogs in Galltmu per day
(Spd)
NumtW1
1.25
4.49
7.77
of
Typc I
Type Il
Type III
T)pc
I V
Red")mt
4
661
2
300
223
190
3
450
300
21d
WS
4
600
373
256
"r N"
S
750
450
294
N
6
900
525
332
1>R I.
7
IOSO
60U
370
II
R
1200
673
409
caallr�w
Total pump out volume equals dose volume + drainb•ick
gallons per dose + _LQ_ gallons = Z 0 % gallons
5. Calculate Volume for Alarm (typically 2 to 1 inches)
Depth (in) x gallons/inch 02) =
8 x Z. = S-�o gallons
6. Calculate Reserve Capacity (75'4 the dally fila%)
Daily flow (see page D-7) x .75 =
ZOO x .75 =: (r- gallons
7. Calculate total gallons
gallons over pump + gallon% pumpt.ttt .', ilons alarm + gallons reserve catxity
#3+#4c+a5+46
X31( + Z01 + +S6 -Z = %/ gallons
& Total Depth (Total gallon divided by gallon per inch)
Total Gallon (a:) + gallon /inch (It2)
Ll �r ( + 2 f6-- = _ail_ inches
9 float Separation Distance (equal total pumpoul . nlutuc )
Total purppout volume (1140 + gallon~/Inch (M_)
240'/+ !_V_= _� inches
► �owae' anAc�
C.Ik" M too Ia.a
1.25
4.49
7.77
(15
� 5
i4-8'1/
3
38.4
4
661
Rcccrrc Capxit)
4larm
Pump On
1b
F'ump Off
Pump Ikight
al Pumpout Wlume
Geu��d level
, ,,
s s —goo
tLAA S.4
99..E
T•�„ � t
4 ?. c,
r4.,, •� s
q & �.
T ..K
9G. r
AV-nP
49$.0
mqN. 4
1( do, m
PI -V , n
PZ ioZ. 7
z. .40
`i
8P�
PSgs
i
Pk 84-
�1
�o'( ,B.Coc </
ot'Qy v.�a, iac•n s
OR00i o
S-&,ej,Qoon.
r
Zl A
O
•• . j
Z ,�
LOL of Soil sggpzs
Location or Project 1,7.-- -a;." r -{ / ,lJ•�.� �'. � .� %. ),.',� �
•oriage spade by _� ca ���u•< <� _ Date
Classification Systes: AASHn USDA -SCS k Unified other
Auger used (check two): Mind X. or Power Flight _. or Bucket ice; other
Depth, boring numbrr ��. _ Depth. Oorintr numhvr b !f
fto eet Surface elevation [ret Surface elevation
1-
2-
3—
i —
s-
6 —
7 —
e-
9 —
10 —
�r z
IZ-1.4
d4•
End of boring at �— fret.
Standing wtter taa it:
Present at feet of depth.
hours after boring.
Not present in borinp hole
Mottle. -.011
Obbrr .at fJa 2 fe-er 14 dr1.th.
Not prey nt In bnrtni,
�L-L44
� m �
Em
m
i0 —
End of boring at feet.
Standing water table:
Present at _ ` fuet of depth.
— hours after borinit.
Not present in bortnv. hole " C
Mottled boil:
nhserved at fret of depth.
Not prusent 1n bnrinp hole —
Logy of Soil 1lorings
Location or Project _ems )moi
boring& Made by %� • Date
Classification System: AASI10 USDA -5f•; Unified other
Auxer used (check two): (land X or Power Flight or Bucket i� : other
Depth. BortnK number _ _ 'U1•11th. burtrip numher
in
fin let Surface elevation _i feet Surface elevation
O -SZ.
1Z-Zli'
2 - , y�, 7-
3
1 — y rvxc-TTLk�-a
4—
s-
6-
7 —] —
a-
9-
10 —
9—l0 —
End of boring; at _ '�L — feet.
Standing water table:
Present at feet of Ilepth.
hours after borinp.
Not preLent 1n borinj hole
Mottled soil:
Observed .rt feet of depth.
Not pre-.r•nt to bortnt• hale
?. /7-z4-
7-
5
f-z47
s --
i 10 —
End of boring at feet.
Standiny water table:
Present at feet of depth.
hours after borinIt.
Nut prrsent in borin%, hole
Mottled boll:
nhserved at _ fret of depth.
Not present in hortni• hole
PZKOKATIOM TEST DATA SHEET
Tort holo loeacion_47%'_ 1&4-�e x'/ &q 04Eg, /W4-5, lblo number
-r
Date test holt was prepared %- 4 — 24- Depth of hole bottom, i inches.
Dia oter of hole. 1. ' inches.
Ssil.data from test hole:
Depth. inches Soil texture
Method of scratching sidewall A#gA7'j
Depth of pea-sized gravel in bottom of hole. inches.
Date and hour of initial water filling
Depth of initial water filling. ' inches above hole bottom.
MKthod used to swintain :ee least 12 niches of water depth in hole for at least
6 hours
Percolation tCst rerdings made by C_ it 14_ 'i on
do - st.ertind oc ' " )UXimuo Water depth above hole
(dateta) .s.
during test, Q inches.
Tia►C
Time
Intcrvol,
Minutes
Mcuhureniunt,
anchcs
Urup in water
level, inches
Percolation
rate,
minutes per
inch
Rtmarks
C7e-
TIG
G
7-7-
i
L�
9
FUC01ATI M TZST DATA SULT
Toot Rola location ,4"/ T Ibl• number
DOC& coat bolo w• prepsrer ��'�� - �J �f- Depth of hole bottom. /Z lathes.
Diwtsr of hole. C inches.
Sall data from test bole:
Depth, inches Soil texture
Method of scratching sidewall '%`, AA, I
Depth of pea -sited gravel in bottom of hole. Z- inches.
Data and hour of initial water filling cf_ Q4
Depth of initial water filling. / inches above hole bottom.
Method used to maintain t least 12 lnchea of water depth in hole for at least
4 houry 12,
Percolation test readings made by �,._ f d on
S (f�t &tartinR dt < a.s.
M:aximua wa:er depth above hole
date) •4•
during EVSL. inches.
Tia.:
1'lma
Interval.
Mlnucc�
Mcdaurrmwnt.
inches
Drup in W4Ler
level. inehe�
Percolation
rate.
alnutes per
inch
Rrm.,rk&
��
i el
e'l
PEDCOI.ATION TEST DICTA SNEET
Test bele location /1 d// c'i �_ %'u�"._=. mole number /)Y
Date teat bola was prepared/f-' - Q - cf . Depth of hole bottom,/ Z laches.
Diameter of hole, _(�_ Inches.
toil Aata from cost bole:
Depth, inches Soil texture
Method of scratching sidewall _ J&'4'0 -d 4 VA; 1
Depth of pea-sized gravel in bottom of hole, Z inches.
Date and hour of initial water filling /C -4 — (14 -Y tr- /"tt
Depth of initial water filling, / Z inches above hole bottom.
Mscbod used to maintain ac least 12 inches of water depth in hole for at least
i hours l?t' � , //
Percolation cost readings made by 1-• A., on
/r' starting ac !Z;- 7 :�: M:&xtnum water depth above hole
(date)
during tact, inches.
Time
Time:
Interval,
Minutes
Muae;uremwent,
inches
Drop in water
level. tnctlea
Percolation
rate,
minutes per
inch
Rea.Arks
/OU
.r
,�'
Z-
s
'
t
y
MWAI.ATtON UST DATA SHEET
Test Iola locatMale member P T
late teat Isle was prepared/C,�,• Depth of Isle bett". /;?— laches.
Dleoetec of hole._ inches.
Sell Aata from test bole:
Depth, inches Sall texture
Metlwd of scratching aletwall pe'4'= 'q %
Depth of pas -sized gravel in bottom of hole, "z— inches.
Date and hour of initial water filling /G 3.C'C' P11,
Depth of initial water filling, / Z' inches above hole bottom.
Method used to maintain acast 12 inches of water depth in hole for at least
4 hours /e- t_ Z. I
Percolation cast readings made by
on
starting ac CC.' �' ?Uximum water depth above hole
(date) P.M.
during cert, inches.
Time
Time
interval,
MinucCa
Muasureawnt.
Lnchus
Drop to water
level. inches
Percolation
rate,
minutes per
Inch
Remarks
ov
�
,f
o
I e.,
� G
G
-=r
PEECOLATION TEST DATA SHEET
Test bola loeatioa4-d reel Holo swrer i) _S —
Date goat Mie vas pre ared lC' 4 -�i__. Depth of hole bottom._ lathes.
Diaseeer of bola. inches.
soil .data from test Mie:
Depth, lachev n Soil texture
Mstb" of scratehiag sidewall A?e.9i2d :" /Ny?% /
Depth of pea-sized gravel in bottom of hole. _Z_ laches.
Date and hour of initial water filling IC t/- til .3 ck-, f%I L
Depth of initial water filling. / Z_ inches above hole bottom.
Methal used to maintain least 12 inches of water depth in hole for at least
i hours ,�'f
Percolation test readings sada by _ �-E_CIX/i�p
starting .t
(date)
during tadt. L-1 inches.
on
. M:,ximus water depth above hole
Time
Timm
Interval.
Minutes
MU4%ureaant.
anthem
Drop in water
level. tnchei
Percolation
rate.
minutes per
inch
Remarks
jU
Z c'
pUCOLATtON TEST DATA SHEET
s
Test hole locscion/1'/_' i rJ.� (i,. Mole &umber r j �
Mete test hole was prepared Oeptk of bale battoe, / Z lDeMe.
Diameter of hole. G_ inches.
I
Sell data from test hole:
Depth, inch*% Soil texture
/_ le duel.*_ -''
Meehod of scratehtn% sidewall vAx<4 rNi
Depth of pea-sized gravel in bottom of hole. Z• inches.
Data and hour of initial water filling
Depth of initial water filling, I I I- inches above hole bottom.
Method used to maintain at lcast 12 inches of water depth in hole for at least
4 hours
Percolation test readings nwdd /by E' on
ccarting ..c1, C) _#' M.,,cimu■ water depth above hole
(dote) .
dur it►g test, 62 inches.
Clsse
Time
Interval,
Minutes
Muasureeount,
♦nchus
Drop in water
level, inches
Percolation
rata,
minute& per
inch
Reaanc6
��zv
(61
!:pZ9 of Soil Bortn.s
Location or Project
•orleas made by `,,. s l��,�s� — -- Date
Claeelf ieation System: AASIUI USDA -SCS Un! f led ; ocher _
AuRoc used (check two): Hand X or Poser Flight _, or Bucket N_; other
Depth. Boring number � —�_ _ Uh•pth. Boring number
feleSurface elevation feat Surface elevation
0 —..__-- n --
D-ZU
1 — h' L,,G 1r. L.0 A r+N
2— Ize--so
' C f'll- C11Cf:
Cad of boring at , 4 feet.
Standing water table:
Present at -- feet of depth•
hours+ after boring.
Not present in boring' hole
Mottlyd sotl:
Obeeerved at _—� fret of di•I•th.
Not prehunt In bnrtnt• lonle _
r _Iq
t/�_ '0' JC Ant
-- iiC-
z
— i -3c
T
h
JA
4
1 5 --
l0 —
End of boring at feet.
Standinp water table:
Present at __ feet of depth.
hours: after boring.
Not present in boring hole 1`"'
Mottled •oil: , ,,
nhserved at /-- Ir_ feet of depth.
Not present in borinr hole