756 Summerbrooke Ct - Perc Test & Septic Design
PERC TEST
AND
SEPTIC DESIGN
Prepared for; Gary Ash -
Prepared by; Gary Staber
Date; September 25, 1998
Site Location: 755 Diflley Road
•`i2-75 vrncNS AVE. TELEIO KTNE 461 2356
m Pnn E, MN 56071 F. 461 -2336
Pn En 5601336
.I-1- 6"F`~
Gary Staber
I n n IK)N IE>T ING. Lo.nm K. INSr'LC I KJNS. 5EPFi- SYS I E'. Desrtai
$em. t3owweS. 5C,,,< Svsrr.m TT10UE11_E-SNOOnNG
LF:ENSLU. INs,,Nt [I !W[) EUNOEn
t } i i 0 ?o Ov MiNNEw Tn Pw wTION C(w tno? AGWNCV N 400
2?.
PERCOLATION TEST DATA SHEET
colauori lest. readings made b GA F_ C?
_startingaLl0'
Test hole location
` Hole number
Date hole was prepare Z
Depth (if hole bpuorrmches, Diameter of hole
-- ? -Inches
Soil data. from test hole:
Depot. inches
Soil texture
Method of scratching
Uepih of gravel in bottom of hole
/inches
Date and hour of initial water filling 9 -Z`t Z
1 epth of initial water filling / ?-n inches above hole bottom
Method used to maintain at least 12 inches of water depth in hole for at least A hours
C
1
Alaximum water depth above hole bottom during test
_incFi }
Time
Time interval,
minutes
'--l' r 4 I/O
Measurement,
inches
?r
elation rate = O.
? Mutes per inch.
Percolation
Drop in water rate,
level, inches Remarks
minutes per
inch
( U I`-G I I ?I ZI ? 1 .
I v rs ,.
f r
PERCOLATION TEST DATA SHIRT
!-? ?%y 01 a m 'ast
AF- SfA?cc staninF a
de by'•
cQlu to
',
pes h le n test readings :Z n ma flole number or Date hole
t o location P , was prepare )aptlt of hole bonom-A inches, Di:unetc, of hole__--inches
ioil data from iest,hole: .•'?'t
Depth, inches
Soil texture
I o?r2 -ri
Acthod of scratching sidetvalf Z „ Z G^ r ---j
'depth of gravel in bottom of hole ' - inches
iVth of initial water filling inches above hole bottom
D:itt and hour of initial water filline Z
Acibod used to maintain at least 12 inches of water depth in hole for at least 4 hours A - n c- ..,t tJ,
, Maxionnn water depth above hole bottom during test inch
Time Time
interval,
minutes
Measurement.
inches
Drop in water
level, inches Percolation
rate,
minutes per
inch
Remarks
7
1 u: r
n M, S'1z ?'lz r2?'lt4"
cy. 1
Z
( r?
'7 ,.
's.
j-
Percolation rate = minutes per inch.
PERCOLATION TL'ST DATA SHEET
ire9layton test_rwdines made by -??'?•- - -f??=.? on?"? (y starting at 11? :' 01 a m.. ;i
/./_
/ TcSi hole lornion::? Hole number Z , Date bole was prepare Z -
j ?,.-.Depth.0f hole boll Oln __(__[ __._IIICIIC S, DI:I?nC'ICl ..I ------ - inches
J,!., Soil do0i from iesr'hole.
r
i Depth, inches Soil texture
I
311+ 5 ?.c --
Method of scratching sidewall Z
Depth of gravel in bonom of hole - inches
Date .61 hour of initial seater Glline lh of initial l.•ater fdline inches above hole bottom
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours
Maximum water depth above hole bottom during test incti.')
Time Time
interval,
minutes
Measurement,
inches
Drop in water
level, inches Percolation
rate,
minutes per
inch
Remarks
!`• GJGLK
n
I
r2o.lt
d'•
Percolation rate =_r _?_nnntnes per inch.
cation or Project '7SS B-31
Borings made by /? - Date
ti•
iCl?ssi€1G?Cion System;. MSHO ; USDA-SCS Unified
u... cs i ae _ other
`IAriger'used'(check two): Hand or Power; Plight or Bucket other__.f- !;??ii•
Dep
th, Boring number
Depth, Bor Cng number.
in
III Surface elevation in s•'.
feet feet Surface elevation
0
1 - /0„2 ? I ? Lh-? L?A•--?
2 - / -,mil 414 C_ Lu iC
3 -
/J-IR SI C .
4 +Z ?
5 -
6
7 -
I
8 -
End of boring at LI•'? feet.
Standing water Cable:
Present at feet of depth,
hours after boring.
Not present in boring hole '>L
Mottled soil:
Observed at 3 feet of depth.
Not present in boring hole
Obsurvations and comments:
0
/n-Ile
1 - /0.•2 ?I ?
SAr? CAI,-;
2 -
3 -
/ k:N _ 12 /i ( It --
4 - I! o iz S14 C-LA,
rz
6 -
7 -
8 -
End of boring at •4.feet.
Standing water table:
Present at feet of depth,
hours after boring.
Not present in boring hole +
Mottled soil:
Observed at 3 i-:7 feet of depth.
Not present in boring hole
Observations and comments:
ation.or Project B-31
^ISS 1?
Borings made by Kc? Date `
,.,.. 7N r
Cl?sislf icaCion Sys Cem AASIIO ; USDA-SCS _ L Unified otheY
?' -AuFeY used '(check'two)Hand or Power; Plight , or Bucket other 7-
-D'epCh, Doring number Depth, Boring number r J
in Surface elevation in Surface elevation.:
-feet' feet cj -
n
_-a ILA
z - ?
3 -
!,- II -?'- V_4()_, C?-_ _k mil,`,--_
5 A- C) 1,
0
6-
7 -
i
8 -
End of boring at 1I. = feet
Standing water table:
1`tresent at feet of depth
hours after boring.
Not present in boring hole _/_
Mottled soil:,,.
Observed at feet of depth.
Not present in boring hole
Observations and continents:
? A? c1
2 -
/k"-./z ti(?t
3 -
i
rz "\
b -
7 -
8 -
End of boring at ti feet.
Standing water table:
Present.at feet of depth,
hours after boring.
Not present in boring hole -I-
Mottled-soil:
Observed at Z ,=> feet of depth.
Not present in boring hole
Observations and comments:
SEPTIC SYSTEM DESIGN
DESIGN CRITERIA,
4 bedroom type I single family home. No garbage disposal.
WATER USAGE;
600 gallons per day maximum.
PERCOLATION RATE;
8 minutes per inch.
SEPTIC TANK;
Install a 1,500 gallon precast double compartment tank.
DRAINFIELD;
762 square feet required, 900 square feet proposed. Each trench is 36 inches wide with
6 inches of rock below the pipe. 300 lineal feet of drainfield proposed. Please see
detail.
PUMP CHAMBER;
Install a 1,250 gallon precast tank. Set as specified for a four bedroom house.
GENERAL CONSTRUCTION PRACTICES;
Divert all surface wat =away from the drainfield area. Do not disturb the drainfield
area during construction. Fence off the drainfield area if necessary.
If there are any questions regarding this design please contact Gary Staber at 461-2356.
! \\.,. 1 (PROPOSED)
?' y? a e \ q / ? ?qv p.(
\ \ , / ? 11 J
I \ r \ /SK.f / 1
' \ _ r 4 274.51 J. - _ _ _ _ _ - _
R S
JC
512
. \ •I 4
?
111[ W 114
r IY0.5 OF \ t I 1 ,KS'
''UI
Mu-
-_ SSO oo - - -? 69 0 ?' a a ti?
l
js
902.5
$e CONTOUR w ?1.J s
? A i t 4. wcr ?-._ l I »i.fta• /i N CONC. _ I Sl?la
nr _ ?
If..• N, a? m VI I G.?_ __? 4 wet
fxr J°•
CONE O
Ncr n 4 Sc •;r.
rsr N 202j r a. 096.0 w -
I _ ;'. S an°' E • Q- CON TOUR I I a /°° ' wta .
nc? ':S t\ '`s\
.- .Nr I I a fTAv.
W •n<
f rr ? - _ I -
e - )
a? I ) 1 I?
Al qt.r
' 1. ? ata' I p Tµ' ? /
tl4
Ali.)'' N` I I o
IT:
r OV / Vz anti ? 4
/? .'.6 I 'f - 4Su
onq tC mA. •-° I .rou ? ti A
I':: ? I r ur I 1 nsv a ?f
Qf '
Iw[n- I P4, •y[r
w w x:
.. m I hr. ' a
I alit ((l o°
\ \r a Ia NW [INC P[II Cd1111Y N[S I I `` 0•• -
f C`
\: •a `\ -MW llll( P(n f1C10 tOCA nOrI I [?'t
li. 'wf.r ? 5 ?Y?L?•ru a. un OT ". `+.r?_??? '•- al_i -- -- \ -
[. a J
1214 C
TIC
»,' N nY 2n Jn W Q)4 I] Zion,
0017,54-
24.3 2o of
7 as
1 1 n n o 1 [nrc OF 011 u.l u3 • ) \L/ 1 - .
SOIL TKEA'1'MENT SYSTEM SITE PLAN DRAWING
INFORMATION Check box if completed:
? Lakes, rivers, streams, wetlands ? Read right-of-way(s) _
gated loll treatment area ? Ordinary high water level of public ureters
Matt, Boll treatm at aru ? Tea-year flood elevation
d borings & pore Zee looatlona urtth d Flooding potential ars"
soritiontal A vertical r eranoa point ?'Location of disturbed or compacted are"
AfeDe'w1th16 a0Qfeet ? Location of run-on potential ere"
I Sewer lines within 50 fast wells E] Elevation of bottom of moll treatment area
J Direction of slope(s) ? Acae" route for tank maintenance
i
1
I
f ;
i i
I
,
C
C r a? oN i
aV >r
r T al
1 ? I
f
I I
j I I
L. V4
' I
I
r.
1
i
mew .'sim,
1.
'- I
K, 1 f I
i F'
z
i
L.t 1
tYa I.
? Lot Lass
? Lot
dimensions.
- l.' "•?. 1":..
0 Lota aaaments
? Sethanks from bnlldln?a
? proposed • existing butldluga J ?•'..
with foundations
SCALE: 1 inch = 3I
IK , .
?-
,?f?_ lei
IL ;z
I 1
.I?
I
24
' I
ll..l_ IQ. ?.i---
I
t ?
_T V I I I
t I I ?`?- i I
a?a\I
\\' w l
r-
I
I.
1 herthy urtify e e Stale of Minnesata Licetued Site Cvalunlo that the individual sewage Irtnlmenl system tliagramnxxl slave is
'ped in amsd; ce with all applicable require mems of Minnesota Rules Chapter 7080. 'Ihe Diagram ollhe on -site sewage treainaa syayen,
note as of the t ttom of Ihis lout Ihr the siic idntlitied in ILis rgton. Nu Jcl.nninalion of lillure hydrmdiu peAortnance cmt la: made
to l'n.re as sage o e the hle oftlK system.
License Il Dalc
:TREATMENT SYSTEM WORKSHEET
j'
i
FLOW
Estimated O CN ' gpd
measured x 15-_, gpd ._ .
f SEPTIC.TANK VOLUME
gallons
SOILS (Site evaluation data)
Depth to restricting layer = 3, S feet
D:_ Maximum depth of svstem C - 3 ft = a feet
Percolation rate- n MPl
E. Texture-
F. SSF /.?r? sq ft/gpd
G. : Slope // a %
/TRENCH BOTTOM AREA
H. For trenches with 6 inches of rock below the piper
A x F =6? x IM =?6Z q ft of botto? area
I. For trenches with 12 inches of rock below the pipe:
AxFx0.8=_x_x0.8=_sgftofbottom area
J. For trenches with 18 inches of rock below the pipe:
AxFx0.66=_x_x0.66=_sgftofbottom area
K. For trenches with 24 inches of rock below the pipe:
AxFx0.6=_x_x0.6=_sgftofbottomarea
BED BOTTOM AREA
L. For seepage beds with 6 or 12 inches of rock below the pipe;
1.5xAxF=1.5x_x_=_sgftofbottom area
ROCK VOLUME IN CU FT
M. Rock depth below distribution pipe plus 0.5 foot times bottom area:
M =Rock depth + 6 inches x Area (H,I,J,L,K)
(-a +0.5fI)x=`/9 cu ft
ROCK VOLUME IN CU YDS
N. Volume in cu ft divided by 27
M + 27 = cu yds`:r ` f 27 = 3Q?.cu yds
ROCK WEIGHT
0. Cubic yards times 1.4 = tons
Nx1.4=tons 32? x1.4 Jl?tons
SYSTEM LENGTH
P. Select trench width= --? It
Q. Divide bottom area by trench width: (H, I, J, or K) + P =
Lineal feet I- I 3 = ?eal feet
Ql. Gravelless Design
A x F + (3 for 10" pipe, 2 for 8" pipe, width of the Chamber)
x= _ = _ feet
LAWN AREA
R. Select trench spacing, center to center = I o feel
S. Multiply nench spacing by lineal feet R x Q = sq It of lawn area
3rax x / .? =3q^K?sq Et
LAYOUT (Use other side)
1. Select an appropriate scale; onea?-n feet. .
2 Show pertinent property boundaries, right-of-way, easements.
3. Show location of house, garage, driveway, and all other
_ improvements, existing or proposed
4. Show location and layout of sewage treatment system.
5. Show location of water supply well.
6. Dimension all set backs and separation distances.
Estimated Sewage Flows in Gallons per day
2 3110 1 225 ISO 60%
3 1450 300 218 I of 6, 1
4 I 600 I 375 256 vahra
5
6 750
1 900 450
525 294
332 m
Type 1. I
1 7 i 1050 1 600 370 ? o,
8
I 1200 1 675 408 t to
; colnmm .
Nw6cr [Type l IType a Type M I Type
IMnorlls 1 l .
I. t .;
I ;:3it
5 ocrank Ca [rne ,in albu?
LuyuW eapv:xr
^.IUmM n('- Minimum liyuq l3?pudopann.+k wal&
Br4m,ma Capnn Tulare tlupwl hr
hn... tm,tle.
3.4lcra :SO 1123 ISO
3w4 low 1500 Taal
S." 1500 _:SO xiu
i. R." :1100 30011 Lail
Soil Cbu cteristia and Required Area
for cwage Treatment
Pce olati n Rue in Square
Minutes per inch Soil Tcalure fat per gallon
IMP[) per day
Fastu than 0.1 • Coarse Sand
0.1 to 5 Sam 0.83
0.1105 Fine Sam •• 1.67
6 to 15 Sanity Lour I.27
16 to 30 Loam 1.67
31 to 45 S01 Loam 2.00
46 to 60 Clay Loam 2.20
Slower than 60••• Clay '--
• Soil loo come IOr W WIgC lrcamtcnL
Use systans for rapidly permoble soils.
•• Soil havme 50% or mate of fire sand
plus rely fine sand.
'''Soil with loo high a peseennge of clay (or
Insulladon of an loground standard system
6 inches=, 0% Reduction`
12 inches= 20% Reduction
1S inches= 34% Reduction
24 inches= 40% Reduction
*sizing for gravelless trench
Geotextile Fabric
18-36" Width
I Irr2" Rock Cover
14- Dist. Pipe
6-24" Rock
3/4-2 1/2"
FINISHED GRADE
I
INCHES OF
BA KFILL OVER ROCK
NONWOVEN GEOTEXTILE FABRIC
ORIGINAL GRADE
TRENCH DEPTH
INCHES
2 INCHES OF ROCK OVER PIPE
4 INCH PIPE
_ _INCHES
OF 3/4" TO 2 1/2"
WASHED SEWER ROCKS
BELOW DISTRIBUTION PIPE
INCHES TRENCH WIDTH
ORIGINAL GRADE
FILL SOIL TO A IvM4MIUib1
OF 6 INCHES OVER ROCK
2" OF ROCK OVER PIPE
4" DISTRIBUTION PIPE
t
6 - 24 INCHES OF
WASHED ROCK BL-LOW
DISTRIBUTION PEPE ;`;'
PUMP SELECTION PROCEDURE
A `Determine-pump capacity:
Gravity Distribution
1. Minimum suggested is 20 gpm
2. ..Maxin um suggested is 45 gpm
Pressure Distibution
3. a. Select number of perforated laterals
b. Select perforation spacing = feet.
c... Subtract 2 ft: from the rock layer length-
2 ft: feet.
Rnvk Oyu ImRJ,
d. Determine the limber of spaces between.perfora tions.
Length perf. spacing = - ft. + ft. _ _ spaces
C. _ spaces + 1 = perforations/laleral
f. Multiply perforations per lateral by number of laterals to
get total number of perforations. T;r,? x ??_ _ perforations.
g. >17Trr x =-gPIn.
SELECTED PUMP CAPACITY L ?Z gpm
11. Determine head requirements: U rr;I--,
1. Elevation difference between ,pump and point of discharge.
feel
2. If pumping to a pressure distribution system, five feet for pressure
required at manifold if gravity system, zero.
feel .,.,,.'rl
3. Friction loss
a. Enter friction loss table with gpm and pipe diameter. L
Read friction loss in feet per 100 feet from table (F-14).
F.L. _ I , \ ft./100 ft of pipe
b. Determine total pipe length from pump to discharge
point. Estimate by adding 25 percent to pipe length for fitting
loss, or use a fitting loss chart (F-15 feet).
Equivalent pipe length - 1.25 limes pipe length =
A C,, x 1.25 = !ZQN feel
c. Calculate total friction loss by multiplying
friction loss in ft/100 fl by equivalent pipe length.
Total friction loss = ?C, x t' I +100 = _(_ feet
4. Total head required is the sum of elevation difference,
special head requirements, and total friction loss.
/+ - +I
(1) (2) (2c)
TOTAL HEAD / Z feet
C. Pump selection
Perforation Discharges in GPM
Head Perforation diameter
(Imt (inches)
7/32 1/4
1'0a 0.56 0.74
1.5 0.69 0.90
2.06 0.80 1.04
a Use LO foot single homes.
1, Use 2.0 feel for anything else.
S. it veatmem ypAem
Total pipe length
Elevation Ddle,ence
Friction Loss in Plastic Pipe
Nominal
pipe dia.
Flow Rate 1.5" 2- 3"
gpm
20 2.47 0.73 0.11
25 3.73 1.11 0.16
30 5.23 0.23
X35 6.96 2.06 0.30
40 8.91 2.64 0.39
45 11.07 3.28 0.48
50 13.46 3.99 0.58
55 4.76 0.70
60 , 5.60 0.82
65 6,48 0.95
70 7.49 1.09
1. A pump must be selected to deliver at least
Z? gpm (Step A) with at least feet of total head (Step D).
F-15
v
aJ
LL
c
0
a,
v
E
0
c
T
O
O
l
r
Disclkprge, in Gallons per Minute (gpm)
ALARM WIRE
-
PIGGY BACK PLUG IN WEATHER MANHOLE COVER SECURED Tp
PROOF ENCLOSURE-OR LOCATE PREVENT UNAUTHORIZED
IN HOUSE BASEMENT ENTAY
POWER SUPPLY -iO UNION OR OTHER OUICK
' CONTROL WIRE DISCONNECT FITTING
PUMP POWCR CORD
PIPE 15 LAID ON A
24' MANHOL UNIFORM SLOPE FROM
E UM
P P STATION UP TO
1 -AIL TREATMENT AREA
r FROM FOR PROPER ORMNBACK
5E PTIC PLASTIC ROPE OR CHAIN
TANK WITH ANCHOR IF PIPE AT TANK M,/$T
T ALARM FLOAT ON SEPARATE BE LOWER THAN UNION
ELECTRICAL CIRCUIT
O GET ELEVATION FOR
T
DRAINBACK A ,/4 INCH
RESERVE CAPACITY WEEP HOL? MJST BE
AFTER
ALARM SOUND USED
PVMPABLE
CAPACITY
AT LEAST
TS GALLONS
- L . - ?TA?7T_LCv_EL sz - T?
3-J
UT - Q-FF_LEvF[
12'- 18 MINIMUM DEPTH
REDWOOD. CEDAR OR
WATER TIGHT 8 LOCKABLE ELECTRIC BOX-? TREATED POST (4 a 4 min)
ELECTRIC CONNECTIONS MADE
PLUGS OR ELECTRIC CONNECTIONS - ---. l ALL INSIDE BOX
Z' PVC CONDUIT SCHEDULE 80 N ?-LOOP
MANHOLE COVER CHAINED B LOCKED 6 SPACE J'SETT OF POWER CORD FOR
SET LEMENi
SEALED MANHOLE RINGS
SEALED TANK COVER
PLASTIC ROPE OR CHAIN
WITH ANCHOR----
ALARM FLOAT ON SEPARATE
ELECTRICAL CIRCUIT
_ST?R7lE_VU _
SHUT- OFFLEALQ_ _ _
.,. - -
PUMP CONTROL FLOAT-
000
I OY---1-WIRE FROM POWER SUPPLY
ppPIUUPE IS LAID ON A UNIFORM SLOPE FROM
FOR TATROPER NDRAINBACK IL TREATMENT AREA
IF PIPE AT TANK MUST BE LOWER THAN
UNION TO GET ELEVATION FOR DRAINBACK,
A 1/4 INCH WEEP HOLE VUST DE USED
- WEEP HOLE
.v
NOTES: ELECTRICAL WIRE FROM POWER SUPPLY
MUST NOT RUN OVER ANY TANKS. BUT
MUST BE LAID BESIDE OT}JER TANKS
AND MUST BE PLACED.IN "CONOUIT'
ALONG POST
ELECTRICAL CORDS FROM PUMP AND
FLOATS MUST BE RUN THROUGH
CONDUIT WIRES CANNOT HAVE GROUND
1
CONTACT. _ .. ?__.,,..;.
i
i