HomeMy WebLinkAbout1994-10-23 Septic System Design ReportS-P X!�STING, INC.
Robert Hare `.CJ
Lot 2, Block 1
Foxwood 2nd Addition
Orono, Henn. Co., MN
Steven B. Schirmers — MPCA Cert. No. 627
951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566
October 23, 1994
This On -Site Sewage Treatment System is Designed for a Type 1, four
bedroom home Designed in accordance with the Minnesota Pollution
Control Agency Chapter 7080 and local ordinances.
The soils on this site are a loam to clay loam. A seasonally
high water table was located at 14" to 30", (mottled soil). Duo.
to the seasonally high water table, a Pressurized Mound System
will need to be installed. The bottom of the rock bed must be
located at least 3' above the seasonally high water table.
The soils at a depth of 12" have a percolation rate averaging
4.3 min/inch.
The future expansion is on slopes greater than 6% & will need
approval by The City Official.
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 piwer 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 greater than 100' away from the
proposed treatment area.
CONT'D
iM
Lot2,Blk.1,
Foxwood 2nd add.
(21
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 eery 2 years if you have two tanks.
SBS 'ds
Steven B. Schirmers
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MOUND DESIGN WORKSHEET
(For Flows up to 1200 gpd)
4
A. FLOW
Estimated to 0 gpd
or measured x 1.5 = r gpd•
B. SEPTIC TANK LIQUID VOLUMES
gallons
C. SOUS (refer to site evaluation) ao''
1. Depth to restricting layer = 1 14 v inches
2. Depth of percolation tests = 1 inches
3. Percolation rate _, . 7 rnpi
4. Land slope
Ip�ip
Eurna4ed Sewage Flow m Gallom per Day (8Ad)
Number
of
Type I
Type II
Type III
Type IV
kdrooats
2
300
225
18o
40%
3
450
300
218
.t
`~
4
600
375
236
•
5
750
4S0
294
rp
6
900
525
332
°e
dw
7
1(ISO
600
370
8
12m0
675
408
Numbs
% &
mz
or
Bedroom
( Pa-0
2 or lea
750
1325
3 w 4
1.0w
I.Soo
5 or 6
1.500
2.2"
7 w 2
2000
3.000
ova 9
See rig. C-6
(x 1.5)
D. ROCK LAYER DPAENSIONS
1. Multiply flow rate by 0.83 to obtain required area of rock
layer: A x 0.83 =
0D gpd x 0.83 sq. ft./gpd = = : sq. ft.-+, -
2. Select width of rock layer (10 feet or less) = ft.
3. Length of rock layer = area _ width = Rock Bed
Sal .') _ sq. ft. !n ft. _ ft.
'i�i•+ +• idth <10 ft.
E. ROCK VOLUME �- Length
1. Multiply rock area by rock depth to get cubic feet of rock;
sq. ft. x ft. =;_ ; :.L cu. ft.
2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards;
cu. ft. + 27 = ; I cu. yd.
3. Multiply cubic yards by 1.4 to get weight of rock in tons;
:; L cu. yd. x 1.4 ton/cu. yd. = 1 �L tons.
F. ADSORPTION WIDTH
1. Percolation rate in top 12 inches of soil is mpi
2. Select allowable soil loading rate from table;
•=1, gpd/fC
3. Calculate adsorption width ratio by dividing rock laver
loading rate of 1.20 gpd/ft2 by allowable soil loading rate;
1.20 gpd/ft2y . �4 ; gpd/ftl = . )
4. Multiply adsorption width ratio by rock laver %vidth to get
required adsorption width;
x tt = tt
riidt�h Sau IV
u"p,R„',`,
SoilTexttue
,",.',"..
' :,"
ImPJ
i
Faster than 0.1
Coarse Saad
1.20
1.00
0.1 to 5
Sand
1.20
1.00
0.1 to 5
Fine Sand"
0.60
2.00
6 to 15
sandy Loam
0.79
1.52
16 to 30
Loam
0.60
2.00
31 to 45
Silt Loam
0.50
2.40
46 to 60
Cla Loam
0.45
2.67
61 t0 120
Clay
0.24
3.00
Slower than 120
Clav
--
-
- Sod Sal ha" 30% re d or mom fur w very fur aand
G: DOWNSLOPE DIKE WIDTH
1. If landslope is 3% or more, subtract rock layer width from
adsorption width to obtain minimum downslope dike toe
D6.2ft-L_ft=1_feet
2. Calculate Minimum mound size based on geometery:
a. Determine depth of clean sand fill at upslope edge of rock
layer: Separation �'_ feet
b. Multiply rock layer width by landslope
to determine drop in elevation;
Slope Difference SoDaretlee
d
e.
f.
9.
h.
i.
1-
1a,►lo
k.
o moun wi is a sum o
upslope dike (G.2e) width plus rock
layer width (D.2) plus
downslope dike width(G.2i);
i? ft + 10 ft + / '� ft = L4 p_ feet
Total mound length is the sum of
upslope dike width (G.2e) plus rock laver
length (D.3) plus upslope dike width (G.2e);
I(, ft+ ft+1_ft= Meet
aa' -, 5 S - 1)' 174
/ :) x s % � 100 = . 3 feet UOSlope WWI$
Add depth of clean sand for separation (2a) ; ,t eeIV,
at upslope edge, depth of rock layer 0 foot) to depth of
cover 0 foot) to find the mound height at the upslope edge
of rock layer;
'� ft+lh+Ift= .; feet 4,S so'l-tµ-
Enter table with landslope and upslope dike ratio.
Select dike multiplier of 3 . -''�
Multiply dike multiplier by upslope mound height
to find upslope dike width: -L j.L = 1 3 feet PO .
Add depth of clean sand for slope difference (2b) at
downslope edge, to the mound height at the upslope edge
of rock layer (20 to find the downslope height;
1 feet Cover`
t foott Ro .Aia
feel
Slope Otfforenea _ d.. rae
.3
Rocr Bea _ -
19_ feet DownSl0po W+0tI!
foot NO
ate' so'
;.S ft+eftfeet
Enter table with landslope and downslope dike ratio.
Select dike multiplier of _-Sq_.
Multiply dike multiplier by downslope mound height
to get downslope dike width: H SL1 x 3. tS = I? feet
Compare the values of step G.1 and Step G.2h Select the
greater of the two values as the downslope dike width;
I q feet Nam+
T ta1 d dth ' th f ' �' so`-J4.
'y� uoa�ooe
s `' f
i
Total Lanpir
kt
ll
Downslope
51
61
71
31
11
PS
51
61
71
111
t v7•
'.
0
30
l0
i0
n0
^
30
40
50
60
7.0
9.0
1
300
4.17
5.16
t
291
36
476
S66
65a
7.61
2
3.39
i
2 m
3.i1,
454
536
6.19
690
55e
2.75
J37 '
a35
Sol
5�
66S
3,111
L2S
26a
343
{ 17
lM
5 6L
6Aa
5
39
SM
>67
•.17
161
333
400
l62
5.19
5.71
6
3Y
$16
7.16
9
256
3D
385
4,41
403
SU
7
3
SL
79
103.
2.0
3.12
3A
12
UV
5.13
a
3b
5J9
al
1156
5T
1
2262
313
3S7
tos
6.69
633a
9
6.11
f.25
9 D+
11.06
16.92
236
1 %
3 lS
390
430
6 As
10
6a
6.L7
100
1SO0
2333
2.31
2.eb
311
375
C12
6M
11
6.0
7.16
1L11
1715
3063
L26
27
JIM
341
3.95
616
12
6ie
7.60
1250
:163
6375
221
270
3.12
149
3AD
ana
A. Determine pump capacity:
Gravity Distribution
1. Minimum suggested is 600 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 2,700
gallons per hour (45 gpm) to prevent build-up of pressure in drop box.
Pressure Distibution
3. a. Select number of perforated laterals I
b. Select perforation spacing = Z feet
C. Subtr 2 ft from the rock layer length.
���,, • 2 ft. _ feeL
d. Determine the number of spaces between perforations.
Length perf. spacing = jL ft. + - ft. = i'? spaces
e. _L'�_ spaces + 1 = I ..e' perforations/lateral
f. Multiply perforations per lateral by number of laterals to
-z
get total number of perforations.„. x P? ,_ �i perforations.
g• x�'P_ _�. gpm.
SELECTED PUMP CAPACITY qZ gpm
B. Determine head requirements:
1. Elevation difference between p'ulr p and point of discharge.
Zfeet
2. If pumping to a pressure distribution system, five feet for pressure
required at manifold if gravity system, zero.
Meet
Friction loss
a. Enter friction loss table with gpm and pipe diameter.
Read friction loss in feet per 100 feet from table.
F.L- = 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 chart. Equivalent pipe
length - 1.25 times pipe length =
_jam x 1.25 = _ feet
c. Calculate total friction loss by multiplying
friction loss in ft/100 ft by equivalent pipe length.
Total friction loss = x -I _+100 =
Total head required is the sum of elevation difference,
special head requirements, and total fraction loss.
+ y +
(1) (2) (3c)
TOTAL HEAD l-!�' feet
C. Pump selection
feet
1. A pump must be selected to deliver at least
140 gpm (Step A) with at least 1-5 feet of total head (Step BY
F-17
EAU PERFORATION OF A PERFORATED LATERAL
try Cw
.
lA� /1 fww.A. f.Art Ir tin•
• Uwe Swt l/Ir
•
RJ. Mw r uw r w� u.+w
14,tiN1u1. b4W IYIJ�wW..
RequaW Perfarabon Ihschuge
In gaUom per nu me (gM
Ductuuge
Head
(le")
1.0a
0.56
0.74
2.Ob
0.80
1.04
a. Use for single family homes
b. Use for all other applications
Pipe Length
Point of Discharg
o.W L
Elevation Diffemnce�a' LI
Pump
F-18b
1.5 inch 2.0 inch 3.0 inch
gpm Frwim for W 100 h of pipt
10
0.69
0.20
12
0.96
0.28
14
1.28
0.38
16
1.63
0.48
18
2.03
0.60
20
2.47
0.73
0.11
25
3.73
1.11
0.16
30
5.23
1.55
0.23
35
7.90
2.06
0.30
40
11.07
2.64
0.39
45
14.73
3.28
0.48
5o
3.99
0.58
55
4.76
0.70
60
5.60
0.82
CI;RTICICATION 4 00627 Logs of Soil Borings
Location or Project Lot 2, Block 1, Foxwood 2nd Add., Orono
Borings made by 2-P iestinq, Inc. Steve Schirmers Date 1P-17-94
Classifiction System: AASHO USDA-SCS X Unified Jther
Auger used (check two): stand X or Power Flight or Bucket
X
Depth,
Boring nu,nber 1
Depth,
Boring number_ 2
in
feet
Surface elevation 937.9
in
feet
_
Surface elevation 939.9
J-
— ---- —
0
Topsoil dark brown loam
Topsoil very dark
gray loam
0 - 1-1/2'-MOTTLED 1-1
2'
-
0 - 10"
Brown clay loam
10" - 1'10"-MOTTLED 1'10
Rusty olive brown
2 -
Rusty olive gray
2 -
clay loam
clay loam
3 -
3 -
1'10" - 314"
Rusty 304" - 318" ol#ovgmbrown
4 -
1-1/2' - 4'
4 -
sty 318" - 4' gr19ag" ty
Rusty gray clay
Rusty gray loam to silty
loam
loam w/traces of sandy loam
4' - 5'
4' - 5'
5 -
5 -
6 -
6 -
7 -
7 -
8 -
8
I
t
End of boring at 51 feet.
Standing water table:
present at feet of depth,
hours after boring.
Not present in hole X
Mottled soil:
Observed atl-1/2'
feet of depth.
Not present in hole
Comments:
End of boring at 5' feet.
Standing water table:
present at feet of depth,
hours after boring.
Not present ir. hole X
Mottled soil:
Observed at 1'10" feet of depth.
Not present in hole
Comments:
..
L- 1 .3
tERTI['ICATION d 00627 Logs of Soil Rorinys
Location or Project Lot 2, Block 1, Foxwood 2nd Add., Orono
Borings made by a-p Testing, Inc. Steve Schirmers _ Date 10-17-94
Classifiction System: AASHO USDA-SCS X Unified ; Other
Auger used (check two): (land X , or Power Flight , or Bucket X
Depth,
Boring number 3
Depth,
Boring number 4
in
940.8
in
938.9
feet
Surface elevation
feet
Surface elevation
J-
-- — —
0 -
-- - -
Topsoil dark brown loam
Topsoil very dark gray
0 - 10"
1'2"-MOTTLED 1'2" loam
Brown clay loam
0 - 1 4"
Rusty very dark gray clay
2 -
10" - 2'2"-MOTTLED 2'2"
2 -
1'4" - 202" loam
Rusty olive brown
Rusty olive gray clay loam
clay loam
212" - 3'
3 -
3 -
2'2" - 314"
Rusty olive gray loam
Rusty olive brown
3 - 4 ,
4 -
loam
4 -
Rusty olive gray
silty loam
5 -
314" - 5'
5 -
4' - 5'
6 -
6 -
7 -
7 -
8 -
8 -
I
l
End of boring at 5' feet.
Standing water table:
present at feet of depth,
hours after boring.
Not present in hole X
Mottled soil:
Observed at 2'2" feet of depth.
Not present in hole
Comments:
End of boring at 5' feet.
Standing water table:
present at feet of depth,
hours after boring.
Not present in hole X
Mottled soil:
Observed at 112" feet of depth.
Not present in hole
Comments:
L-13
CERTIlfICATION 4 00627 1,09s of Soil 130r1ncas
Location or Project Lot 2, Block 1, Foxwood 2nd Add., Orono
Borings made by S-P Testing, Inc. Steve Schirmers Date 10-17-94
Classifiction System: AASHO USDA-SCS X Unified Other
Auger used (check two): Hand X or Power Flight or Bucket X
Depth, Boring number 5 Depth, Boring number 6
in in
feet Surface elevation 939.4 feet Surface elevation 942.4
0 - — -- - -
Topsoil dark gray
1 - loam 1 _ Topsoil dark brown
lo'm
2 -
3 -
4 -
5 -
6 -
-
8 -
0 - 2'-MOTTLED 2'
Rusty very dark gray
clay loam
2' - 3'
Rusty olive gray
clay loam
3' - 4'2"
Rusty gray loam
4' 2" - 5'
End of boring at 5o feet.
Standing wa;,?r table:
present at feet of depth,
hours after boring.
Not present in hole X _
Mottled soil:
2'
Observed at feet of depth.
Not present in hole
Comments:
-
3 -
4 -
5 -
6 -
7 -
:m
0 - 2-1/2'-MOTTLED 2-1/2'
Rusty dark gray
clay loam
2-1/2' - 4'2"
Rusty gray clay loam
4'2" - 5'
End of boring at 5' _feet.
Standing water table:
present at feet of depth,
_ hours after boring.
Not present in holes X
Mottled soil:
Observed at 2-1/2' feet of depth.
Not present in hole
Comments:
CdRT.#00627
PERCOLATION TEST DATA SHEET
a.m.`-.
Percolation test readings made by S—P Testing. Inc. on 10-18-94 starting at 8: 47 p.m.
IAU,#
Test hole location Lott, Blk.1, Foxwood 2nd. Aodriumher 1 Date hole was prepared 10-17-94
Depth of hole bottom 12 inche%. Diameter of hole_ 6 inches
Soil data from test hole:
Depth. inches
Soil texture
0 — 12"
Topsoil very dark gray loam
Method of scratchingsidc%%,all Knife
2
Depth of gravel in bottom of hole
inches
10-17-94 5:30pm 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
Maximum water depth above hole bottom during test
6 _inches
Time
Percolation
imc
interval.
Measurement.
Drop in water
rate.
Remarks
minutes
inches
level, inches
minutes per
inch
• 8:35
prefill
6
8:47
9:02
"
3-3/16
4.7
15 min
9:13
9:28
of3
5.0
NO "
9:29
9:44
ON
2-15/16
5.1
NO "
9:57
10:12
NO
2-13/16
5.3
NO "
Percolation rate = 5.1 "+mutes per inch.
CERT.#00627
PERCOLATION TEST DATA SHEET
S-P Testing. Inc.
Percolation test readings made by on 10-18-94 starting at 8 : 48 ^p,m.
deer i
Test hole location Lot 2 , B 1 k .1, Foxwood 2nd "HAd oldd e number 2 Date hole was prepared 10-17-9 4
Depth of hole bottom 12 _inches. Diarneter of hole 6 inches
Soil data from test hole.
Depth. inches
0 — 10"
10" — 12"
Soil texture
Topsoil dark brown loam
Brown clay loam
Method of scratching sidewall Knife
2
Depth of gravel in bottom of hole inches 33
Date and hour of initial water filling 10 —17-9 4 6epth oPiimtial water filling 12 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
ime
Time
interval.
minutes
Measurement.
inches
Drop in water
level, inches
Percolation
rate,
minutes per
inch
Remarks
8:35
pref111
6
8:48
9:03
of2-7/8
5.2
15 min
9:12
9:27
of
9:30
9:45
of
"
"
" "
9:56
10:11
"
Percolation rate = 5.2 inures per inch.
CERT.#00627
PERCOLATION TEST DATA SHEET
Percolation test reading, made b� S—P Testinq, Inc. on 10-18-94 starting a� 8 : 49
p,daa �.
Test hole location Lott, Blk.1, Foxwood 2nd Wo c number 3 Date hole was prepared 10-17-94
Depth of hole bottom 12 inches. Diameter of hole 6 inches
Soil data from test hole:
Depth. inches
0 — 10"
10" — 12"
Soil texture
Topsoil dark brown loam
Brown clay loam
Method of scratching sidewall KNi f e
2
Depth of gravel in bottom of hole inches
10-17-94 5:30pp,m 12
Date and hour of initial water filling . Depth of mitial water tilling inches above hole bottom
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours A titnma * i r- a i phon
. Maximum water depth above hole bottom during test 6 inches
ime
Time
interval.
minutes
Measurement.
inches
Drop in water
level. inches
Percolation
rate.
minutes per
inch
Remarks
8:35
prefill
6
8:49
9:04
"
2-7/8
5.3
15 min
9:11
9:26
"
2-13/16
5.3
"
9:31
9:46
2-3/4
5.5
9:55
10:10
2-3/4
5.5
Percolation rate = 5.4 minutes per inch.
CERT.N00627
. ` PERCOLATION TEST DATA SHEET
Percolation test readings made by S-P Testing, Inc. 10-18-94 on starting at 8:50 L
Lot2,B1k.1,Foxwood 2nd Add. 4 10-17-94
Test hole location . Hole number Date hole was prepared
Depth of hole bottom 12 inches. Diameter of hole 6 inches
Soil data from test hole:
Depth. inches
Soil texture
0 — 12" Topsoil very dark gray loam
Method of scratching sidcwallKnife
�
Depth of gravel in bottom of hole 2 inches
10-17-94 5:30pm 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
, Maximum water depth above hoc bottom during test 6 inches
ime
Time
interval,
minutes
Measurement.
inches
Drop in water
level, inches
Percolation
rate.
minutes per
inch
Remarks
8:35
prefill
6
8:50
9:05
of4-7/16
3.4
15 min
9:10
9:25
"
4-5/16
3.5
"
9:32
9:47
4-1/4
3.5
"
9:54
10:09
4-1/4
3.5
Percolation rate = 3.5 minutes per inch.
6
CERT.#00627
.
PERCOLATION TEST DATA SHEET
Inc. am
Percolation test readings made by S—P Testing, 10-18-94 on staving a, 8:51
Lot2,B1k.1,Foxwood 2nd Add. jwes 10-17-94
Test hole location . Hole number . Date hole was prepared
Depth of hoie bottom 12 inches. Diameter of hole —inches
inches
Soil data from test hole:
Ihpth. inches
0 — 12"
Method of scratching sidewall Knife
Soil texture
Topsoil dark gray loam
Depth of gravel in bottom of hole 2—inches
10-17-94 5:30pm 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
Maximum water depth shove hole bottom during Icst 6 inches
; ime
Time
imerval.
minutes
Measurement.
inches
Drop in water
level. inches
Percolation
rate.
minutes per
inch
Remarks
8 : 3 5
prefill
6
9:06
5-1/2
2.7
15 min
_8:51
9:09
9 : 2 4
5-1/8
2.9
"
9:33
9:48
4-7/8
3.1
9:53
10:08
4-3/4
3.2
"
Percolation rate = 3.1 minutes per inch.
CERT.#00627
PERCOLATION TEST DATA SHEET
S-P Testing, Inc. 10-18-94 8:52 �,
Percolation test readings made by on starting at p.m
Lot2,B1k.1,Foxwood 2nd Add. 6'` 10-17-94
Test hole location , Hole number . Date hole was prepared
Depth of hole bottom inches. Diameter of hole inches
Soil data from test hole:
Depth, inches
Soil texture
0 — 12" Topsoil dark brown loam
Method of scratching sidewall Knife
Depth of gravel in bottom of hole— 2 inches
10-17-94 5:30pm 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
Maximum water depth above hole bottom during test 6 inches
imc
Time
interval,
minutes
Measurement.
inches
Drop in water
level, inches
Percolation
rate,
minutes per
inch
Remarks
8:35
prefill
6
8:52
9:07
5
3.0
15 min
9:08
9:23
4-7/8
3.1
"
9:34
9:49
4-3/4
3.2
"
9:52
10:07
4-3/4
3.2
"
Percolation rate = 3.2 minutes per inch.
SANDY LOAM
LAYER OF GEOTEXTILE
FABRIC OR 4-INCHES OF
HAY -COVERED -BY
BUILDING "PAPEROR 2
PIPE FROM PUMP- t
CL?AN21WOCK / I
V TOPSOILS
10
41,
`LEA
SANp FILL • • �•SOO
9ROkEN ER '
Up
PERFORATED
!._ LATERALS
SOIL , ' , r. •'.. w ��r..
A'�•.
BQR TERRA qr:
Eri
Ile
DIVERSION FOR
J SURFACE WATER
r
LAYOUT OF PEPFORATED PIPE LATERALS FOR
PRESSURE DISTRIBUTION IN MOUND
PERFORATED PLASTIC PIPE
P N6
PERFORATIONS SPACED 36' : "R�FTQN S
END ON CFNTER PERFORAT IDN r RfQ
v I E w Ue E,/ - X Pf
-j� l6j.
\ PERFORATIONS ON BOTTOM OF
PLASTIC PIPE
10
L END CA+' Q�,
/IERAI
�3 OF KRFBRI'Ep 1
LfN�fN
IALIERNATE LCKATION
OF PIPE FF40M PUrAPI
2 PIPE FROM
PUMPING CHAMyER
LAYER OF GEOTEXTILE
FABRIC
GRASS COVER ---
:LEAN SAND FILL-1
MAXIMUM SLOPE—�-p"
3 TO I
-r -TOPSOIL L PLOWED OR JVi
UBSOIL DISKED SURFACE
LOAMY SAND CAP
—PERFORATED LATERAL .
6 INCI+ES
TOP IL ,
CROSS SECTION A - A
—PIPE FROM
PUMPING CHAMBER
I � I
- W. I :;
- a �
77
PERFORATED I iE
LATERALS I
BED AREA I ~
" I
on
-- I Z i=
-�E+-
INCH� I
DIKE --_�_JO FEET—•1,•—oIKE
_ MAX,
---- TO'AL WIDTH ----
PLAN VIEW
ENO PERFORATION OF A PERFORATED LATERAL
.. co
Tq•.0
{ I •1 Geow • Iowk h►Mv•
1-.rq •..� 641
�G �NI m 4 O.IIM M•ru•nmur
onto C N•M M
�Zkol • of fit• Lover
-Pr Iw Jl.WA L•4l•1 •1
croon SWA Low Eblf— N L•rr•1
likka •i S•II M••rl Sw11.N
Mw. a�..M� s•w i•r«
F-8
SEALED TANK COVER
r LASTIC ROPE OR CHAIN
WITH ANCHOR ------
ALARM FLOAT ON SEPARATE
ELECTRICAL CIRCUIT—
START._ LEVEL- D _ ___ A.
3. -
SHIJT-OFF_I,FVEIQ-__
PUMP CONTROL FLOAT
WATER TIGHT U LOCKABLE ELECTRIC BUX—�
PLUGS OR ELECTRIC CONNECTIONS - -- -` -
2" PVC CONDUIT SCHEDULE 80 6�SP� E
MANHOLE COVER CHAINED 9 LOCKED
SEALED MANHOLE FLINGS - I
` AT LEAST 12*
_ BELOW GRADE
�_ WIRE FROM POWER SUPPLY
�PPIIPME 155 LAID ON A UNIFORM SLOPE FROM
r PROPER OUA1NBACK IL TREATMENT MEA
�- IF PIPE AT TANK MUST BE LOWER THAN
UNION TO GET ELEVATION FOR DRAINBACK.
A I/4 INCH WEEP HOLE MUST DE USED
— WEEP HOLE
REDWOOD, CEDAf� OR
TREATED POST (4 x 4 m1n)
� INSItDEL CBOX IC CONNECTIONS MADE
LOOP OF POWER CORD FOR
SETTLEMENT
NOTES ELECTRICAL WIRE FROM POWER SUPPLY
MUST NOT RUN OVER ANY TANKS BU1
MUST BE LAID BESIDE OTHER TANKS
AND MUST BE PLACED IN CONDUIT
ALONG POST
ELECTRICAL CORDS FROM PUMP AND
FLOATS MUST BE RUN THROUGH
CONDUIT WIRES CANNOT HAVE GROUND
CON IACI
ME FAR-�
COVER
CONCRETE -
MANHOLE
'
--
RING
—
METHODS OF SI"CURING
MANHOLE COVER TO PREVENT
UNAUTHORIZED ENTRY
Figurr C-14
Figure F-K
VERTICAL SIDEWALL SEPTIC TANK
FINISHED GRADE
L
AT LEAST 6"TO 2" SOIL Ill, AT LEAST
I"
4" DIA. COVER 4" DIA.
MIr4 AT LEAST —I" AT LEAST 1"
1 j A DIMENSIONSFOH TANKS WITH VERTICAL SIDES
WIU1H, W _ 24' MINIMUM—
f LENGIN,.L 2 TO-3 -
O3. 11MES TIIE WIDTH
B DIAMEIER GO'_MINIMUM _
} DEIITH- 30' MINIMUMi_78' MAXIMUM
AT LEAST 8 -- 6" MINIMUMI.0.2 D MAXIMUM v_
3" c oao—
I 1 6"
AT LEAST 4 FEET ---
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LIN IIfS
I/
INLET SCUM
• r=_OUTLET LEVEL}
is _. __—•- —
_ .. _ SCUM CLEAR SPACE ---
SLUDGE
OUTLET
1►
v CLEAN OUT TAM( WHEN:
-TV IS 3. OR LESS OR
B 'a' IS 12' OR LESS
1
e BLACK COLOR
1 DISTINGUISHES SLUDGE
J. LAYER FROM LIOUID
MEASURE SCUM AND SLUDGE ACCUMULATIONS
IN THE SEPTIC TANK