HomeMy WebLinkAbout08-10-1998 S-P Testing, Inc S-P TESTING, INC. Steven B. Schirmers & Debra M. Schirmers
951 Katydid Lane NE •• St. Michael, MN 55376 • (612) 497-3566
A/0
U1 r G pi eL j� j,,,,(- iito-sal_- FAX (612) 497-5011
" `TState License#394
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August 10, 1998 3/,/ 3(i / , • J.A-ce, ' - ' 1
P Atz-&-e
Bill Yaeger .4144./(32.41. _ 4- 4t,a,tj. eArle•-2------, VI)
Lot 64 & 65 /�
Morse Island Park, Big Island / '
Orono, Henn. Co., MN
t7.r.,2z/n-Yr-
This On-Site Sewage Treatment System is Designed for a Type 111, two bedroom cabin
(180 gal/day), in accordance with the Minnesota Pollution Control Agency Chapter 7080
and local ordinances. Due to the limited space & no basement below the cabin, a 10'
setback is requested for the tanks from the structure.
The soils on this site are SCS soils mapped HbC - Hayden loam. The seasonally
saturated soils were located at 60 to 76" (mottled soil) . The bottom of the treatment
area must be located at least 3' above the seasonally saturated soils. A standard
gravelless trench system may be installed with a distribution box.
The soils at a depth of 24" & 30" have a percolation rate averaging 31.1 mpi.
A 500 gallon pumping chamber will need to be installed to lift the septic 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 i ,in case of a pump failure.
- /
The holding tanks will be 1- gallon & 1-1000 gallon. Insulate all the tanks to prevent
freezing. The tanks will be pla tic so use spray polyurethane which will insulate and add
strength.
1
All neighboring wells are located greater than 90' away from the proposed treatment
area.
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 human waste, laundry, showers, toilets, etc. should be disposed of
into the septic tanks. Garbage disposals are not recommended, due to adding more
solids & fine solids passing through to the system. 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 tanks through the
manhole by a certified pumper every 2 years. Check with your pumper to set up a
schedule.
5/ - 2., C--?j •
Steven B. Schirmers
2
11VLJ1 V I1./UAL )L YVI JC 11U .11Y1C1N I X ikM VYUKI' t1L tl
FLOW Estimated Sewage Flows in Gallons per day
A. Estimated I `-e0 gpd I='"
measured x 1.5= - gpd N ouoffbc
Type I ;T,vpe >I lYPe III TNe
SEPTIC TANK VOLUME "
B. I - /000 gallons 2 ! 300 225 180 60%
3 4501 300 218 of the
4 600 375 256 values
SOILS (Site evaluation data) 5 750 450 294 N
.i
C. Depth to restricting layer= (0-`-'I 'fd 6'-o° feet I 7 ' I600 370 ' Type 1
D. Maximum depth of system C-3 ft= I),"'10 30' feet 1 8 1200 j 675 408 i m
E. Texture L-t-A'- Percolation rate 3%-t MPI IColumns '
F. SSF ,.-'),o sq ft/gpd
G. Slope ____% Septic Tank Capacities tin ra lot ss
Liquid cap:u dy
Number of Minimum Liquid Liquid capacity with with dssposa1C&
TRENCH BOTTOM AREA L\1 W`N.`> -- Bedrooms Capacity garbage disposal lift inside
or less 750 1125 1300
H. For trenches with fpipe:Sinches of rock below thez
1 tK, lox 1500 .txx,
A x F= J. x •D, =3°/t, s ft of bottom area st>r6 isoo :iso xxxt
q 7.X or y _°00 1W0 400U
I. For trenches with 12 inches of rock below the pipe:
A x F x 0.8= x x 0.8= sq ft of bottom area Soil Characteristics and Required Areas
J. For trenches with 18 inches of rock below the pipe: for Sewage Treatment
A x F x 0.66= x x 0.66= sq ft of bottom area Percolation Rate in Square
K. For trenches with 24 inches of rock below the pipe: Minutes per Inch Soil Texture feet per gallon
A x F x 0.6= x x 0.6= sq ft of bottom area (MPI) per day
BED BOTTOM AREA Faster than 0.1 • coarse Sand --
0.1 to 5 Sand 0.83
L. For seepage beds with 6 or 12 inches of rock below the pipe; 0.1 to 5 Fine Sand•• 1.67
1.5 x A x F= 1.5 x x = s ft of bottom 6 to 15 Sandy Loam 1.27
q om area 16 to 30 Loam 1.67
31 to 45 Silt Loam 2.00
ROCK VOLUME IN CU FF16thanQ Clay Loan' C
Slower than 60••• Clay ----
M. Rock depth below distribution pipe plus 0.5 foot times bottom area: Soil too coarse for sewage treatment
M=Rock depth+6 inches x Area(H,I,J,L,K) Use systems for rapidly permeable soils.
( +0.5 ft)x = cu ft •• Soil having 50%or more of fine sand
plus very fine sand.
ROCK VOLUME IN CU YDS ***Soil with too high a percentage of clay for
N. Volume in cu ft divided by 27 . • installation of an inground standard system.
M+27=cu yds_+27= cu yds
ROCK WEIGHT 6 inches 0% teduction*
O. Cubic yards times 1.4=tons 12 inches=20% Reduction
N x 1.4=tons x 1.4= tons .18.1nches=34%=R'eduction
24 inches :40%:Reduction
SYSTEM LENGTH *sizing for.gravelless.trench
P. Select trench width= 3.0 ft
Q. Divide bottom area by trench width: (I-I,I,J,or K)-P=
lineal feet /14110,113Waststierig Geotextile Fabric
. ..2 + 3_D =13a lineal feet N :;Vo.,;.;b0'e.P.4v: }'ox�4! 12"Rock Cover
�dypQ�p4�}o�.oQ `Qhr.r:r...C4n�•
Q1. Gravelless Design a�o o`?a, id80. •
A x F+(3 for 10" pipe,2 for 8"pipe,width of the Chamber) .:-., •241,,o'" :+,°a.;°a
x + = feet ;64.111:;P.
.o. �
'dot
•'. a,oi
D 0 '';,D D�
IIS rr.%O).... `lA
ao OQ.yQrr.♦. ♦.•t.•.r.fi•r.r...vp a
LAWN AREA �f�.•�4w;rww4O'a�r�;a'�idO�'PRaOl
R. Select trench spacing,center to center= •5 feet b•oawil atod!'11-xoo7o o,
S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area a,d oc„,,d ; , ^a.: oy aame
j?z2 x C, = (vlot) sq ft yd):b';r o•.."'.••xa•.rpc'dYa, 6-24u-Ruck
giPv oY)o .POparP-•..a03/4-21/2s
LAYOUT(Use other side) q5:•6' *q1.?',711
1.Select an appropriate scale;one square= feet. o•t.i•'P o,iq;�,Q;;c?ob:::-•+Q, �-wao-v\,`•s,•
2.Show pertinent property boundaries,right-of-way,easements. d tq �'`'"'rM1too•"."411t;r
0'�!,1.q: �P;�O�ODyyAc yp N 'F'1'Yf-
3.Show location of house,garage,driveway,and all other 0°� ='"� ••.P.t. •"'°''".`r'
improvements, existing or proposed 18-36"Width
4.Show location and layout of sewage treatment system.
5.Show location of water supply well.
6. Dimension all set backs and separation distances.
•
PUMP SELECTION PROCEDURE
A. Determine pump capacity:
Gravity Distribution
1. Minimum suggested is 20 m
2. Maximum suggested 5 m Perforation Discharges in GPM
Head Perforation diameter
Pressure Distibution (feet) (inches)
3. a. Select number of perforated laterals 7/32 1/4
b. Select perforation spacing= feet. 1.0a 0.56' 0.74
c. Subtract 2 ft. from the rock layer length. 1.5 049 0.90
20b 0.80 1.04
Reck layer length
-2 ft.= feet.
d. Determine the number of spaces between perforations. a Use 1.0 foot single homes.
Length perf.spacing= ft.+ ft. = spaces b Use 2.0 feet for anything else.
e. spaces+ 1 = perforations/lateral
f. Multiply perforations per lateral by number of laterals to
get total number of perforations. x perts,utuat= perforations.
g. vas x 1pnv> = gpm.
SELECTED PUMP CAPACITY l-1 S' gpm )1")A.)L
B.Determine head requirements:
1. Elevation difference between pump and point of discharge.
`) feet
2. If pumping to a pressure distribution system,five feet for pressure soil treatment system
required at manifold if gravity system,zero.
--- feet Total pipe length "s'/-
3.
3. Friction loss __
a. Enter friction loss table with gpm and pipe diameter. k Elevation Diff creme
Read friction loss in feet per 100 feet from table(F-IA). pipe t M,w
F.L.= "?,;� 'r. ft./100 ft of pipe ;s
•
b. Determine total pipe length from pump to discharge 7...-..-. .•
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 times pipe length=
x 1.25= Li y feet Friction Loss in Plastic Pipe
c. Calculate total friction loss by multiplying
friction loss in ft/100 ft by equivalent pipe length. Nominal
Total friction loss= 3•a x Li L) +100= 1 feet pipe clia.
4. Total head required is the sum of elevation difference, Flowte 1.5" 2" 3"
special head requirements, and total friction loss.
20 2.47 0.73 0.11
+ + 1 25 3.73 1.11 0.16
' (1) (2) (3c) 30 5.2.3 1.55 0.2.3
35 6.96 2.06 0.30
TOTAL HEAD /0 feet ` 1 2.28 0.39
45 5 111..00 7 3.28 0.48
-50 13.46 3.99 0.58
55 4.76 0.70
C. Pump selection 60 5.60 0.82
65 6.48 0.95
70 7.44 1.09
I .
1. A pump must be selected to deliver at least
L-LC gpm (Step A) with at least /0 feet of total he (Step B).
t--)A X
S-P TESTING, INC. Steven B. Schirmers & Debra M. Schirmers
951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566
FAX • (612) 497-5011
State License#394
LOGS OF SOIL BORINGS
Bill Yaeger
Lot 64 & 65
Morse Island Park, Big Island
Orono, Henn. Co., MN
Borings completed on 8-4-98, with a hand bucket auger.
BORING NUMBER 1- EIev.952.7 - NO MOTTLED SOIL PRESENT IN THE BORING.
0 - 8" Topsoil dark brown loam 10YR 3/2
8" - 12" Gray brown loam 10YR 4/2
12" - 26" Brown loam 10YR 5/6
26" - 46" Brown loamy medium sand 10YR 6/4
46" - 70" Brown medium sand 10YR 6/4
70" - 78" Brown sandy loam 10YR 6/4
BORING NUMBER 2- EIev.953.9 - MOTTLED SOIL AT 76" - no standing water present
in the boring.
0 - 10" Topsoil dark brown loam 10YR 3/2
10" - 40" Brown clay loam 10YR 5/6
40" - 66" Brown loam 10YR 6/6
66" - 76" Brown medium sand 10YR 6/4
76" - 96" Rusty brown medium sand 10YR 6/4 - mottles 6/8
BORING NUMBER 3- Elev.953.5 - MOTTLED SOIL AT 60" - no standing water present
in the boring.
0 - 10" Topsoil dark brown loam 10YR 3/2
10" - 30" Brown clay loam 10YR 5/6
30" - 60" Brown loam 10YR 6/6
60" - 66" Rusty brown loam 10YR 6/4 - mottles 6/8
66" - 74" Rusty brown sandy loam 10YR 6/3- mottles 7/1,6/8
74" - 84" Rusty brown loamy medium sand 10YR 6/3 - mottles 7/1,6/8
Soil borings cont'd.
BORING NUMBER 4- EIev.953.3 - NO MOTTLED SOIL PRESENT IN THE BORING
0 - 12" Topsoil dark brown loam 10YR 3/2
12" - 16" Gray brown loam 10YR 4/2
16" - 40" Brown clay loam 10YR 5/6
40" - 44" Brown sandy loam 10YR 5/6
44" - 60" Brown loamy medium sand 10YR 6/4
60" - 72" Brown medium sand 10YR 6/4
2
CERTIFICATION NO.627
STA 1'L LICENSE NO.394
PERCOLATION TEST DATA SHEET
Percolation test readings made by S-P Testing,Inc. on 8-5-98 starting at 10:59am.
Test hole location Yaeger, Lot 64 & 65,Morse Island Park, Big Island,Orono.
Test hole numberi., Date test hole was prepared 8-4-98.
Depth of hole bottom 24 inches. Diameter of hole 6 inches.
SOIL,DATA FROM TEST HOLE
DEPTH,INCHES SOIL TEXTURE
0 - 8" Topsoil dark brown loam
8" - 12" Grater brown loam
12" - 24" Brown loam
Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial
water filling 8-4-98, 11:30am. Depth of initial water filling is 12 inches above the hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon.
Maximum water depth above hole bottom during test is 6 inches.
Measurement, Drop in water level, Percolation rate,
Time Time interval,min inches inches minutes per inch Remarks
10:52 — prefill 6
10:59 11:29 6 2-3/16 13.7 30 min
11:34 12:04 6 2-1/8 14.1 30 min
12:06 12:36 . 6 2-1/8 14.2 30 min
Percolation rate= 14.0 minutes per inch.
CERTIFICATION NO.627
STA I'L LICENSE NO.394
PERCOLATION TEST DATA SHEET
Percolation test readings made by S-P Testing,Inc. on 8-5-98 starting at 11:00am.
Test hole location Bill Yaeger, Lot 64 & 65,Morse Island Park,Big Island, Orono.
Test hole number/. Date test hole was prepared 8-4-98.
Depth of hole bottom i inches. Diameter of hole 6.inches.
SOIL DATA FROM TEST HOLE
DEPTH,INCHES SOIL TEXTURE
0 _10" Topsoil dark brown loam
10" - 30" Brown clay loam
Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial
water filling 8-4-98, 11:30am. Depth of initial water filling is 12 inches above the hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon.
Maximum water depth above hole bottom during test is.inches.
Measurement, Drop in water level, Percolation rate,
Time Time interval,min inches inches minutes per inch Remarks
10:52 prefill 6
11:00 11:30 6 1/2 60 30 min
11:33 12:03 6 1/2 60 30 min
12:07 12:37 6 1/2 60 30 min
Percolation rate= 60.0 minutes per inch.
CERTIFICATION NO.627
STATE LICENSE NO.394
PERCOLATION TEST DATA SHEET
Percolation test readings made by S-P Testing,Inc, on 8-5-98 starting at 11:01am,
Test hole location Yaeger, Lot 64 & 65,Morse Island Park,Big Island,Orono.
Test hole number 3. Date test hole was prepared 8-4-98.
Depth of hole bottom 24 inches. Diameter of hole 6 inches.
SOIL DATA FROM TEST HOLE
DEPTH,INCHES SOIL TEXTURE
0 - 10" Topsoil dark brown loam
10" - 24" Brown clay loam
Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial
water filling 8-4-98, 11:30am. Depth of initial water filling is 12 inches above the hole bottom.
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon.
Maximum water depth above hole bottom during test is 6 inches.
Measurement, Drop in water level, Percolation rate,
Time Time interval,min inches inches minutes per inch Remarks
Water remaining in test hole
11:01 11:31 6 1-9/16 19.2 30 min
11:32 12:02 6 1-9/16 19.2 30 min
12:08 12:38 6 1-9/16 19.2 30 min
Percolation rate= 19.2 minutes per inch.
NOTES
TO I. ALL PIPES SHOULD BE AT LEAST 4-INCH
1J1/_OUTLET TRENCH DIAMETER.
INLET FROM
SEPTIC TANK 2. ELEVATION OF INLET AND SUPPLY LINE TO
OR PREVIOUS NEXT DROP BOX MAY DE ADJUSTED UP OR
DIlU{' 6" -SUPPLY LINE DOWN FOR DESIRE_!. rr-FLUEN1 LEVEL IN
r0 NEXT TRENCH.DROP OOX g SUGGESTED TRENCH LIQUID LEVELS: (A) 2 INCHES
_.. ABOVE TOP OF OUTLET PIPE IF PERMEABLE
----'--111.• -� SYNTHETIC FABRIC COVERS ROCK). (B) AT TOP
OF OUTLET PIPE IF HAY OR STRAW AND
BUILDING PAPER COVERS ROCK.
4. INVERT OF INLET MUST BE AT LEAST ONE INCH
HIGHER THAN INVERT OF SUPPLY PIPE TO
NEXT DROP BOX.
-1 -OUTLET TO
TRENCH 5. TRENCHES MAY OUTLET ONE SIOE OR BOTH
SIDES OF DROP BOX.
44- ---- -- -..--.-"---i.-7.--------.-- r ,>f ` �?
( �i SUPPLY i , INLET
--—AINIJ_ , , j._ LINE fdilb - -SUPPLY LINE
C!� t. I I I
T 2.. I *c I /
'
-• T I 11 ,
I
I _ - '"I i LL
.1111t-
-,.-
--OUTLETS
I TO TRENCH I I -OUTLET TO
�___..._ ..I ----•-- � TRENCH
DROP BOX •
GRAVELLESS TRENCH CONSTRUCTION DETAILS
r/�1 1/2" Inspec!ion
I Inlet Pipe to Next 1 1/2 Mate i Well
Drop Box 0
Adapter
1i12" Soil Backfill kxfS#
-.1 :) o'
Corrugated Tubing Covered""" •
�"'In nnnpr).Dr with Geotextile FabriSnnnnnnnnr
Drop Box 14
Trench Length = up to 100 Feet ►1
Overfill to Allow •
NOTES: 1. Bottom of trench must be level. Top
for Settling of tubing must be level.
`` B ckfill /`
!//j' 12" of Soil 2. Scarily trench bottom and sidewalls
24" { Backfill at lead 12 inches above trench bottom
+
1 -- - 12"
-� to expose natural soil.
� 3. For proprietary products consult
Holes Located manufacturers performance criteria.
"' 24" at.4 and
B O'Clock
)
Figure D-33
F-8
REDWOOD, CEDAR OR
WATER TIGHT a LOCKABLE ELECTRIC BOX--.„, TREATED POST (4 x 4 min) •
PLUGS OR ELECTRIC CONNECTIONS-- /"ALL ELECTRIC CONNECTIONS MADE
2" PVC CONDUIT SCHEDULE 80 -r INSIDE BOX
MANHOLE COVER CHAINED a LOCKED 6"SP_ACCE_ SETTLEMOP OF PEONWTER CORD FOR
SEALED MANHOLE RINGS L.FINAL GRADE
'" AT LEAST 12"
UNION BELOW GRADE
.... WIRE FROM POWER SUPPLY
it -+- `
pPIUPMPI STATION UP TO S LAID ON A IFORM SO L TREATMENT AREA
FROM
• ,� / ;I, FOR PROPER DRAINBACK
SEALED TANK COVER
11..-
�-IF PIPE AT TANK MUST BE LOWER THAN
' UNION, TO GET ELEVATION FOR DRAINBACK,
PLASTIC ROPE OR CHAIN .1 A 1/4 INCH WEEP HOLE MUST BE USED
WITH ANCHOR — WEEP HOLE
ALARM FLOAT ON SEPARATE •II
ELECTRICAL CIRCUIT •',
NOTES: ELECTRICAL WIRE FROM POWER SUPPLY
. START IEVt.�7_ L' SII ,_,. MUST NOT RUN OVER ANY TANKS BUT
T MUST BE LAID BESIDE OTHER TANKS
3'- \. j AND MUST BE PLACED IN CONDUIT
ALONG POST
SHUT:OEF LE. L__Q—
—. ___•_ ELECTRICAL CORDS FROM PUMP AND
FLOATS MUST BE RUN THROUGH
CONDUIT. WIRES CANNOT HAVE GROUND
PUMP CONTROL FLOAT < v d CONTACT.
000
Figure F-8
•
METAL
COVER
L'-' -i'' C-11:)' •-'.. Y . . 4 .
'� Y
. I >, 1 a •v
Y
A 1
f
• CONCRETE ►� 1
MANHOLE ��+'+•_- __,.:
RING ,,,,
t.
METHODS OF SECURING MANHOLE COVER TO PREVENT
UNAUTHORIZED ENTRY
Figure C-14
VERTICAL SIDEWALL SEPTIC TOIK -*''
7.,--FINISHED GRADE
AT LEAST .4s6"TO 12" SOIL ,- AT LEAST
4" DIA. I COVER 4" DIA.
MINI [AT LEAST I•' AT LEAST I" _
A DIMENSIONS FOR _TANKS WITH VERTICAL SIDES A
WIDTH. W 24' MINIMUM
LENGTHL_ 2 TO 3 TIMES THE _WIDTH
DIAMETER 60" MINIMUM _
\ :
L_. DEPTH D 30" MINIMUM; 78' MAXIMUM C
A _ _0.2 0 _ C
r - AT LEAST B 6"_MINIMUM• 0.2 0 MAXIMUM
C 0.4 D
•--- ----- --AT LEAST 4 FEET-- --i
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INLET . p � s .grw � I'.;1I . .
-
y " ...4 • OUTLET;%tpuTLET LEVEL ` a .I " Y
.-
• _ SCUM CLEAR SPACE- • �r II - Y CLEAN OUT TANK WHEN:
}; _ -- - _ �—•"••' ' _— -�� `T' ?a IS 3" OR LESS OR
`- _ _ _ 11 B "8" IS 12" OR LESS
� '• _r.
%`1.,::;::'. • . BLACK COLOR
);it • SLUDGE ..:' w' .. DISTINGUISHES SLUDGE
1'••.'i''*'": • . •• • ,..',.:',11;j1, LAYFR FROM LIQUID
Y/
MEASURE SCUM AND SLUDGE ACCUMULATIONS
IN THE SEPTIC TANK
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®Percolotion Tests Scale:
Dtw.(\-VG is t\,` \t LF -"1"9._C-.E- $1,Soil Borings LOT(,4-4-�0c) N.o(LSE
.ir\-1 .a - `l4R.t, s. Bench Mork
Note: This system is to be constructed to meet
the Minnesota Pollution Control Agency S—P TEST/NG
Chapter 7080 & Local Ordinance F/_/___ - )
Note : Check all underground utilities Doe ii,. By V, P- 6' J.
_ existing grade
Irbock fin r ,"min.
i
r i
i
'1
i o t-.1,4. 1_,'"VAW‘
I
SET- BACKS '-.1••Y
*C� � -. 02_51.5
. \
,t-- y y--.{
System must be:
Tank )0. from property lines TRENCH X- SECTION
?�' from wells
a� from bldgs.A? oN"�'- . /V {min, of two trenches)
Treatment area S Q'from lakes, streams (max. length 100')
Treatment area 2.a.... from property lines
3-tA P uo es vn,,I.1 D. 1L from wells
-
.____-___.- A�uc,«� �� from Bldgs.
-� ��} " )O 'from trees ote:Power supply and switches must be in a weather
,, - 1>> 11 I ' — SOIL BORING ELEVA
proof enclosure outside •pumping chamber
lilt f .O min. _______L_______,______-7-,- _ --
I• ,, THal EL.-` ,.7)
/ /moo } soca 9,,\ 60:9 gr,1. ' pipe__ t I { L
Tank r=_:__ •'"_pi !QI ��1,; TH.R2 EL.—9 1..>e 9
Drop to Tank
Tank rr�• -3 5 - Grode�%slope TH 3 EL.-�S3
t- -, _ ..„,,. ,,- „St.S �`�At least ��._ of undisturbed TH, 4 EL:
Min. I"to 8 Pumping earth between trenches TH.`5 EL.-____
Max.l tto4' Chamber ELEVATION at PROF
4"to 6'�dia. pipe CHAMBER-'1'1'3.0
U .A k..1 v.%‘._\.--ms 91-F- _ vi) Pf?' f\L 1 s-S'.-�
iYSTEM DESIGN
TYPE-.1 , BEDROOM - Percolation rate 31,1 min./inch (design'q.,,,--•,.00 min./inch)
Treatment area required w/ +of rock filter material tb"/o =3,l, sq.ft. of trench bottom area needed -"rtrench width = 13 D, lin.ft.of trench needed , number of drep-1
Dumber of tanks required . , 1st tank loo c>gaL, 2nd tank. Oogal. minimums ti,_��- <',c .
(to be determined by the installer) �,ss'
;lean rock ---cu,yds. ( 3/4„ to 2 1/2"dia.,includes 2"above pipe ) 1 3;'_L..)y-\.1-'-'S to'b,_0_ 4,14.1%), ‘,,\,-<-.f V',v PROPERTY OF V)V---L `
'umping chamber capacity= 25% of daily sewage flow-of i Y,O gal.=j gal.+Reserve.storoge_gal.t Pipe,.back drainage -' gal= a S ) gal.cap. ?-°-< („0-) 4 (.S t-1 oo
1«<71 "�i),lr--A*S\--r l.) i ��� ��--�'r Tom`= I.it� "SL�3-t
Reserve storage =I<r:c.ga I./bedroom- 'gal. t pipe back drainage-__ gal./1OOIin.ft. " pipe- length of pipe needed app 3. ft. _ `Z 31
---. —gal.) )...c),--) .-1 . Co .
Dump size 11'Z- hp w/mercury float pump controls 0STt, 2-` r ',.,z x -\--•.--,, , ,st-4-lPrFA-,r" _..'L3_ ;rti ) r,--„,,. ,-,p-s)_.
S—P TESTA
ote: When constructing bed - , this area should be shaped Note: Distance from treatment area to neighboring wells- /,- --.•622.
to divert run-off from entering treatment area. �' -mac- Y 0/ Designed By:
Date://)I /Se/, PH. 612