HomeMy WebLinkAbout1990-04-27 Septic System Design ReportLoamfS it Borings 11_18
Location or Project ! C! LLek T6 jam_ �,QL
Borings made by J90A.,
Classification System: AASHO USDA -SCS_; Un ifi'ed other —
Auger used (check two): Hand or Power _; Flight _, or Bucket: other
Depth,
Boring. nurher.*_.l
Depth.
Boring. number _ -
in
feet
Surface elevation i
•
in
feet
Surface elevation
n
n
---
-
Sim & ' BL•nrc k L 01M.
SAA1,01. UL Yc )� L e qA
/MerA,&toy Bit SAtiO wj�+
S *Lr S7ipu0$
PL.s*moy L01"?
—
Sohb� Spit=� STDIIr�
2 —F
no7rl.;o �, t3lAcK LOAM
/yo77't ��o GKN
3 —
3 __
w Th SPnF Sha« SToi,95
5 —
7 —
. 8—
iJ
End of boring at 2 too
Standing water table:
Present at feet of depth,
hours after bori�n/g•
Not_present in boring hole A
Mottled soil:
Observed at Geot of depth.
tiot present in boring hole _
Observations and comments:
4 —
5 ---
6 —
7 —
8 —
End of boring at -7 Z _ •
Standing water table:
Present at feet of depth,
hours after boring.
Not present in borinp. hole -.
Mottled soil: 4/
Observed at216
too" of depth.
Not present in boring: hole
Observations. and comments:
Loe� •g.�•of Soil Borings; �+ 13-18
Location or Protect ��%ZTA/ _ L L/% ! '— L — Rtk _ l._
Borings made by DD/V CZE2 lOt/t'lr pate 2 9 V _
Classification System: AASHO USDA -SCS; Unified other —
Auper used (check two): Hand , or Power _; Flight _, or Bucket other
Depth, Boring nuirber. _ Depth, Borinp number
in Surface elevation in Surface elevation
feet feet
—
Sh ,oy ULACk 4ON4.
1 G�61 134 ko.4My so5k1 —
_
2 - /7 vTTL ED 8A,.SAS DAM 2
g —P 3 ---
4 —
5—
�b —
7 _
8—
End of boring at _�32 Fe"
Standing water table:
Present at feet of depth,
hours after boring.
Not. present in boring hole
Mottled soil: �J
Observed at _ fam- of depth.
Vot present in boring hole —
observations and comments:
4 —
5 —
6
7 —
8 —
End of boring at feet.
Standing water table:
Present at feet of -depth,
hours after boring.
Not present in boring hole
Mottled soil:
(Observed at fest of depth.
Not present in borinn hole �_•
Observations and comments:
B-39
PERCOLATION TEST DATA SHEET
J
u
Test hole location & LLERTOti Bole number — /— LG'l —E
Date test hole was prepared Y-27- 9 Q Depth of hole bottom,
Diameter of hole, 1_ inches.
Soil data from test hole:
Depth, inches
`othod of scratching.sidewall
Soil Lexture
Depth of pea-sized gravel in bOL'tOfu O:* Bole, ? _ inclies:.
Date and hour of initial water filling; q-27-g►a 9.;yR--A,
Depth of initial water filling, inches above hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at le:}:;L
4 hours j.
Pe1rcolation test readings made by Q
/7
- —2 k— 2,6 starting at
(date)
during test, inches.
Maximum water depth above hril : b .cc
Time
Time Interval, Measurement, Drop in water
Minutes inches level, inches
Percolation
rate,
minutes per
inch
1' ��arics
a o
<<
Percolation rate 7 - minutes per inch.
1:-39
PERCOLATION TEST DATA SHEET
Z
Test hole locationn�. L L�,c TQ/�/ stole number — L 0 /
Data test hole was prepared t�-2Z-9D Depth of hole bottom, ! C�!1'.
Diameter of Bole, la_ inches.
• Soil data from test hole:
Depth, inches
O -/b
.16 _Lr
Soil texture
i < .
1•!ethod of scratching .sidewall __
Depth of pea-sized gravel in bottom of hole, ? inches;.
Date and hour of initial water filling J9 l�
Depth of initial water filling, inches above bole bottoia.
Method used to maintain at least 12 inches of water depth in hole for at 1c:::.:L
4 hours ��/"e) 'L.L -
Percolation test readings made by Q [j-
::
starting at _ a. in. . Maximum tater depth abova
(date) m -
�_ during test, 4 inches.
Time
Time Interval, Measurement,
Minutes inches
Drop in water
level, inches
Percolation
rate, Remarks
minutes per
inch
147 dnkrAlly M7
'Le
0A iAl7
3 116
12 1
Percolation rate * 2 3 minutes par inch.
F,
PERCOLATION TEST DATA SHEET
Test hole location FU L Lt Rre& hole number - �, �-•
Date test hole was prepared �/��'%� 9Q Depth of liole bottom,_
Diamater of hole, 6 inches.
Soil data from test hole:
Depth, inches
10-/S'
Method of scratching sidcwall
Soil texture
SAk % v L oAM _
Depth of pea-sized gravel in bottom of hole, Z inches.
Date and hour of initial water filling q-27 6&aAll
Depth of initial water fiilin[;, / inches above hole bottom.
uethod used to maintain at least 12 inches of water depth in hole for at least
4 hours L L
Percolation test readings made by DOM
starting at a""'
—r— (date) 2.m.
during test, inches.
. Maximum water depth above i; ct
17 minutes Por inch.
Percolation rate 0 _
PERCOLATION TEST DATA SHEET
Test hale location FU L LL- 2 / D/t/ IIo1e number _(oT-' 6
Date test hole was prepared 2r%- 90 Depth of hole bottom,
Diameter of hole, inches.
Soil data from test Bole:
Depth, inches Soil texture
Method of scratching sidcwall -_s R/i Te- AE e
Depth of pea-sized gravel in bottom of hole, _� inches.
Date and hour of initial water filling
Depth of initial water filling, i,3_ inches above hole bottom.
Method used to maintain at least 12 of water depth in hole for at: lc:l:;t
4 hours /
Percolation tear , _adings made by L ,9;/ 6/t'QA L ?&_
. U starting at 2�Qs haximum water depth above
(date)
�. during test,7k inches.
)AX
7 �`% ? minutes Per inch.
Percolation rate "_____
ft
Time
Percolation
Time
Interval,
Measuremenc, Drop in water
rate,tC!Lnirk
Minutes
inches level, inches
minutes per
A %V —
S -31k
inch
L
3 Y12
cF•�,
It.
'
-
)2-.2'
��
��
s
-
/2
23
!�. ..
12
2
5
�,
�i
3
2
O
''
'
—
2
—
)AX
7 �`% ? minutes Per inch.
Percolation rate "_____
ft
L'-39
PERCOLATION TEST DATA SHEET
Test hole location LU Z L_Tom,, hole number LV 7-1
�
Date test hole was prepared y=2 r% G — / o , Depth of hole bottcrI,___/_r i G
Diameter of hole, �� inches.
Soil data from test hole:
Depth, inches Soil texture
O — /S A�r.w2 44c L obi If
Method of scratching.sidewall SC
Depth of pea-sized gravel in bottom of hole, 2 inches. pp��
Date and hour of initial water filling
Depth of initial water filling, inches above hole bottom.
Method used to maintain at least 12 i"ches ofwater depth in hole for at lc;l: t
R
4 hours /{ F F► L
Percbrlattion test readings made by _LON Lr,
—2 —9D starting at QS a';°'
(date)L._M_
�. during test, i3 inches.
IV V (r IN f,J+ U!1
Maximum water depth above hol b cc.
Time
Time Interval, Measurement,
Minutes inches
Drop in water
level, inches
Percolation
rate,
minutes per
inch
Remarks,
�L
OS 3
!Ysh))V r
21 7
�r
re i� r
ZE
Percolation rate Q S' minutee per inch.
ERCQT • :torr 'rt:ST DATA SHEM
--�_ -- —
Test hole location F%/LLejeTo%y Bole
��QcK
Data test hole was prepared-AL•2 :: �, Depth of bole i,ortom,j�
Diameter of hole, /0 inches.
Soil data frcm test hole:
Depth, inches Soil texture
0-12 N 0- k ► oo
Method of scratching .sid 1.1x311 .scm�c�ir,�
Depch of pea-sized gravel in bottom of hole, _ niches. l r
Date acd hoii,. -;C initial water filling C,/••?Z_ 2J %�
Depth of initial water filling, inches above hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at lu::.;L
4 hours IRR -F) ` L
Percolation test ra. iinv,_r made by
L -7 starting at Q9Pa.m.. Maximum water depth above dole b )cc.
ce)
C, tert, 3 inches.
'Time
Tire Interval,
Minutes
Matisurement,
inC:ic.:
Drop in water
level, inches
Percolation
rat^. I •;e�aarlcs
minutes p-
inch
'I
—
r
'
/ 1
minuter, pot
Perco-1. cion rate �_... inch.
Lo; s of Soil Borings
Location or P ro j e c t eXW e 4 6,e n2ei ^ea or e ri F
BorinCs made by A4,eff, OGnJ nefA.Id lelea Date
Classification System: AX _ USDA -SCS X_; Unified otha:
Auger used (check two): Hard or Power _; Flight �, or Bucket other
Lor
Depth, Boring number Depth, Boring number .S
in
feet Surface elevation reet Surface elevation
_
0 0
/iI�CK COAI�1
1 —
GA,i + Qtou,"✓ x ii -o r C 1Air1. �we.
2 GRA Y e,?,& /
ct,-4r to��
3—
4—
5—
6 —
1 f
8—
End of boring at 2. _ feet.
Standing water table:
P-resenz at feet of depth,
hours after boring.
Not present in boring hole
mottled soil:
observed at /. fest of depth.
tint present in boring hole
Observations and cor.:rents:
1 =-
2
3 --
&Z.4 /K 40.1m
C�t�r e'aca-✓ r c� rFr f,�,ro
",-,o r d Na 4"',
Ce4 Y C Of ir,
id of boring at 3. O feet.
tanding water table:
resent at feet of depth,
hours after boring.
)t present in boring hole
3ttled soil:
)sarvad at /•-S •feat of doped.
of pt.:sent in bo:inr, bale
bservations and comments'
0
�'.I. C a7' d &e r /,
t / S
•lr
, E-19
POUND DESIGN
PROCEDURE
(For Flows up to 1200 gpd)
/GTfr1l-A iF T/TE ,
A. Sewage Flow Rate
F. Pressure Distribution System
See D-7 or I-3, 4, or 5, or use
1. Selec; number or perforated
metered value; Flow Rate
laterals 6
7S0 gp d
2. Select perforation spacing
B. Septic Tank Liquid Volume
,3 ft
(see C-3 or C-5) /LSO gallons
3. Select perforated lateral
C. Soil Characteristics
length; Note if manifold is
at end of rock layer, lateral
1. Depth to restricting layer
length is rock layer length
such as seasonally saturated
less half a perforation
soil, bedrock, coarse soil,
spacing. If manifold is in
etc.; / 8 inches
center of rock layer, lateral
2. Depth of percolation tests;
length is one-half rock layer
1 r' inches
length less half a perforation
spacing. Perforated lateral.
3. Number of percolation test
length - 29.7 ft.
holes; Z holes
4. Divide lateral length by perfor-
4. Ave. percolation rate;
ation spacing to get number of
.7, 3 mpi
perforations per lateral
5. Landslope �_%
3�feet _ 3 feet - �_perfs
Note: last perforation must be
D. i,-ck.Layer Dimensions'
in end cap, %see page E-14)
Y
5. Multiply perforations per
1. Multiply gpd by 0.83 to
lateral by number of laterals
obtain required area of
to get total number of
rock layer;
perforations;
7S0 Rpd x 0.83-!?I.S_ sq ft
/O perf s/la t x 6' la is - 4CO
2. Select width of rock layer
6. Determine required flow rate
(10 feet or less) - /0 feet
by multiplying number of
3. Length of rock layer - Area
perforations by flow per
= WidthQjsq ft Lift
perforation (see page E-17)
• C2, -7 ft
IL perfs xo,7ygpm/perf - JT.Ygpm
7. Select minimum required lateral
E. Rock Volume
diameter from table on Par -7-17;
1. Multiply rock are_ by rock depth
enter table with perforation
to get cubic feet of rock;
spacing, perforation diameter,
621. S so f t x Q, 7S f t - W7 cu f t
and number of perforations per
lateral. Select minimum
2. Divid u ft by 27 cu ft/cu yd
diameter for perforate,' 'ateral
to get cubic yards; 17-3
inches utt 110
3. Multiply cubic yards by ?.4 to
get weight of rock in tons;
G. Basal Width
/Z L_cu yds x 1.4 - jy. 2 tons
1. Percolation rates in top 12
inches of soil is -zt..Lmpi
2. Select allowable soil•loading
'-
rate from table on page E-16;
t2
O. ngpd/f
/*6/l NI6 O. rO
MOUND DESICN PROCEDURE (Continued)
(For Flows up to 1200 gpd)
G.3. Calculate basal width ratio
by dividing rock layer
loading rate of 1.20 gpd/ft2
by allowable soil loading
rate;
1.20 gpd/f t2=g�,'Cgpd/f t2 -? OC
Check this value on page E-16.
4. Multiply basal width ratio by
rock layer width to get
required basal width;
?t 00 x /o f t =ZOr. Of t
H. Downslope Dike Width
1. IC landslope is 3% or more,
subtract rock layer wi0th
from basal width to obtain
minimum downslope dike toe width
20.0 ft - .lo ft -/40-
2. Calculate'mound height at edge
of rock layer on downslope side;
a. Determine depth of clean sand
W406 Suvoir fill at upslope edge of rock
C'elF' !B-y,s layer: . S feet
�A��rusaR.-JBbp Multiply rock layer width by
landslope to determine drop
in elevation;
/Ox 7% 100-0.7ft
c. Add drop in elevation to depth
of clean sand at upslope edge
of rock layer to get depth of
clean sand at downslope edge
of rock layer.
O-,7 ft + /.Sft .'2.2 ft
d. Add depth of clean sand at down-
slope edge to depth of rock
layer to depth of soil backfill
to get mound height at downslope
edge of rock layer;
j,-Zft +D.�Sft +/,2Sft y.Zft
e. Enter table on page E-18 with
landslope and downslope dike
ratio. Select dike multiplier
of .S S6 y: / 1Yoof
E-20
11.2.f. Multiply dike multiplier by
downslope mound height to get
downslope dike width;
ft
g. Cqmpare the values of step 11.1
and step 11.2.f. Select the
greater of the two values as
the downslope dike width;
2-7-51 feet
h. Calculate upslope dike width 3:
using upslope mound height
and upslope dike multiplier
from page E-18; j 7 ft
2Tq- x jj .
i. Total mound width is the sum
of upslope dike width plus rock
layer width plus downslope dike
width;
�. % f t + /p f t +l� t - jjLl -
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 H.2.a. through
H.2.f; feet
b. Calculate upslope dike width
using upslope mound height and
dike multiplier from Page E-18;
x ft a ft
c. Add downslope dike width to
upslope dike width to rock
layer width to get total mound
width;
ft + ft + ft f:
d. Compare total mound width to
required basal width from step
G.4. If total mound width is
greater than required basal
width, use calculated dike
widths. If required basal
width is greater than total
mound width, increase downslope
dike width.
Lo ..s of Soil BoringsLocation or
rrnject L L��o�_
Borings made byO _�LS''� �R`J nate �.7--,2J —
Classification System: AASHO USDA -SCS _ Unified other —
Auver used (check two): Hand -11 or Power _; Flight or Bucket: other
Depth. Boring. number: nr+pth, noriniy number ......
in Surface elevation
in Surface elevation ` � feet
feet
L"'
1-
2 —
3-
4 —
5-
6 —6
. .7 —
8 —
,S��,ol, pL,N�k LoAlL1
M ACk somo y L v -m
1`f,MI- V it !3LAcK LOAM
• �--.-�--ice-
�1
End of boring at fee•
Standing water table:
Tdresent at feet of depth,
hours after boring.
trot present in boring hole _X
f Mottled soil:
Observal at _2_�L_ feet of depth.
2Iot present in boring. hole — —•
Observations and comments:
S,4iv9j% 7 /� f ;
F%Nr 6kEy Be. <'q -'-'v
Soml; SlInLL sTvw:
W'1Th SOME SM4Lc STV/"f'C
:nd of boring at 32 '��•
handing water table:
'resent at feet of depth,
hours after porins:.
Vot present in borinv hole
—
Mottled soil:
Observed at _2-j.& — fee" of depth.
Not present in boring hole
Observations and comments:
Lo s 0 _S ice , %'r-18
i.ncation or rrn jPct !J LL tom_ _ �! BLS - --
Borings made by !/D/!/ /f,*,f C t/t' nate L�-27— `/ V —
Classification System: AAS110 USDA -SCS x Unified other _
Auper used (check two): Hand , or Power _; Flight _, or Bucket : other
Depth, Boring, number Depth, Boring number
in Surface elevation . in Surface elevation
feet feet
•n
&REI 13R /'V.1MysAki
t! oTTL EIS Bat ..SAN
ZVAM
End of boring at '3_ feet-.
Standing water table:
Present at feet of depth,
hours after boring.
tiot present 1-i boring hole --.4---.
! Mottled soil: �J
Observed at �_ feec•of depth.
Not present in boring hole —
ObsQrvations and comments:
;nd of boring at feet.
standing war•er table:
'resent at feet of -depth,
hours after boring.
lot present in boring hole
lottled soil:
ibserved at !eet of depth.
Not present in borin.; hole
r•bservations and comments:
I; -s9
PERCOLATION 'rrST DATA SHEET
u
Tes► hwle location & LegTo dole number — %— LG'l —E
Dx:te test hole was prepared y--27- Q -,th of hole botto111,15- k
Diameter of hole, 6_ inches.
Soil data from test hole:
Depth, inches Soil eext-ure
Method of scratching sidc,.4alI
Depth of pea-sized lit-vc1 in bottom of hole, �`- inchcS.
Date and hour of initial water Ei11inL X27-
Depth of initial water filling, 13 inches above hole bottom.
Mach.od used to maintain at least 12 inches of crater depth in hole for at lc;l: t
4 hours L
Percolacion test readings made by Doe
4-Z6 — 016 starting at _ 'ev a. Ill.
(da, ) L.m.
�. during test, . 7/8 inches.
U!1
. Maximum water depth above hfAu u .tt
Time
Time Interv,:';,
Minutes
Measurement,
inches
Drop in water
level, inches
Percolation
111 rate,
minutes per
inch
Remarks
I
2-1&
— 4-
2.17
S751
Percolation rate _ +ntnutes per 11161.
L-39
PERCOLATION TEST DATA SHEE-T
Test hole location )1"ij L. L c TO& hole nuribcr=2
Date test hole was prepared 7-1p Depth of hole bottom,
Diameter of hole, _�_ inches.
Soil data from test hole:
Depth, inclics
O -/b
Soil texture
s'Lock.
GQ j S & L 49.41*1 y San d
Mechod of scratching .sidewall_-
Depch of pea-sized gravel in bot: to,,, of hole, niches.
Date and hour of initial water filling 2
Depth of initial water filling, / s inches above hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at 1C. -
4
c4 hours RzF,4/ ' L L
Percolation test readings made by Q
y"'Z'F_ 90 starting at
(date)
during test, inches.
cry u cr c c.,,� (1!
Maximum '.:accr depth abova i. ::t
Time
Time Interval,
Minutes
Measurement,
inches
Drop in water
level, inclics
Percolation I
rate,
minutes per
inch
-
Rcmarks•
IV 7 ,51I '
V7,
'L2
21k- 3 0 i4z
7
7
�1
Percolation rate _ /� 2 _ minutes per inch.