HomeMy WebLinkAbout1995 Septic System qlit
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� CITY OF ORONO
y' '` V t4 ._ c SEPTIC SYSTEM APPROVAL
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= ` CITY of ORONO
r� f` ,t_,(i-
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r unlcipal or6ces
�, tti ��d/r r Post Office Box 66
•ct , .\, ..) ` _„ / Crystal Bay,Municipal
55323-0066
LOCATION: 2785 White Oak Cir.
John Dougan
OWNER:
GENERAL CONTRACTOR: SEPTIC CONTRACTOR:
SITE EVALUATOR: S—P Testing REPORT DATE: July 23, 1993
The City of Orono has Approved your on-site system design as of May 30, 19 9 5
(approved-disapproved) (date)
with the following comments: The existing septic tanks must be inspected and
approved if they are to be reused.
THIS IS NOT A PERMIT. This is a design approval form which must accompany the site plan. A permit must
be issued to a licensed septic contractor prior to installation. A list of currently licensed septic contractors is
enclosed.
NOTICE TO INSTALLERS: Any changes to the approved plans and specs must have prior approval of the
Inspector (473-7357). Call for inspections 24 hours in advance.
ALL DRAIN FIELD AREAS MUST BE FENCED OFF prior to building site excavation and fencing must remain
in place until final site grading. Approval to pour footings will not be granted until the Inspections Department
has verified that primary and alternate sites are adequately protected.
NO VEHICULAR TRAFFIC OF ANY KIND (cars, trucks, earth moving equipment, etc.) is allowed within 20'
of tested drainfield sites either before or after system construction. Compaction of these areas could render them
unusable prohibiting the timely completion and or limiting the long term use of the property.
A site copy will be available at the City Offices for the septic contractor.
CITY O r PRO O
' / izioi
Stephen eckman, On-site Systems Manager
TELEI'IIONE—473-7357• FAX-473-0510
► -1' TESTING, INC. Steven B. Schirmers — MPCA Cert. No. 627
•
951 Katydid Lane NE • St. Michael, MN 55376 • (612) 497-3566
July 23 , 1993
John Dougan
2785 White Oak Circle
Orono, Henn. Co. , MN
This On-Site Sewage Treatment System is Designed for a Type 1 , four
bedroom home in accordance with the Minnesota Pollution Control
Agency Chapter 7080 and local ordinances .
The soils on this site are SCS soils mapped - LrB - Lester loam.
A seasonally high water table was located at 12" & 14" , (mottled
soil ) . Due 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.
This site has an existing failing system with effluent surfacing
due to strong clay soils with a high water table . The existing
tanks may be used upon approval by the local Inspector. They
must be water tight.
The soils at a depth of 12" have a percolation rate averaging
3 . 8 min/inch.
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 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 is in case of a pump
failure . Mercury floats are a good method.
CONT ' D
John Dougan
2785 White Oak Circle
Orono, Henn. Co.MN
(2)
All neighboring wells are located greater than 100 ' 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 gray water, ( laundry, showers, etc. ) human
waste & toilet tissue should be disposed of into the septic tanks .
Garbage disposals are not recommended . Smaller amounts of laundry
soaps , dish soaps , cleaning agents , etc. are better for the system.
Antibacterial soaps & chlorine agents may kill the bacteria needed
to treat septic effluent properly. Additives are not recommended,
they may cause harmful damage to your system. Recommend to pump
& clean your tanks by a certified pumper every year if you have
1 tank & every 2 years if you have 2 tanks to insure proper
maintenance.
even B. SchirmerspS
SBS/ds
--——
I
CITY Of ORONO
altilLDING --.;:r::-, .-yi -L . RIEVISINIP
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14(11 APPRovED — cr(_:. - ...,.:. (R. RESUBMIT i :or
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eowirrients are or your i.-/%. : ,-.!,,,-,. NI v,c,rk shall ge ejer.n*
. tO ittn complrance with MI :-,--p“,-2.1,,-- . Lt.:-;k1qrr & rotting OC.Ste,.*0 iir-----. /0 53 1
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gsweorkants Incluchng items ri,,t s rycally r;oterf m this renlit `I.
KEEP THIS PLAN Er C,i''' ...-!FE AT ALL TtICAF%
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•
i , Note:
Chapter 7080 & Local Ordinanci
:cot:es:A:toe n7yeet
the Minnesota Pollution Cotnr
91;Is
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pec-- -44- /÷9se) CO. ----
Check all underground utilitief
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SET- BACKS
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HOUSE S• ystem must be:
Tank from property lines
X_- S• ._-(_--‹*‘o).-.1 cd-,X} _� .w\Q--;.--.._.‘
W\--� b> ---.1--k-r-. .1 from wells
•
wA\_,tio LT 2z.%2 from bldgs.
-"epi, Treatment area ='from lakes , _' streams
Treatment area ' from property lines NOTE:Power supply and switches must be located in a
MA►�►�o�ES e t tom" ?S' , weather proof enclosure outside the pumping chamber and manhole
from wells
13R4CFILL._ 20 'from bldgs.
t- -, ` ' from trees I _i SOIL BORING ELEVATIONS
, Pi min. I/ t� a "dio.su I •
Tf-(AI EL.-too ri
PPYP ee
ae grade-% TH. EL.-/oo.z
Taitk Tank TH.43 EL:/c�o.-2-
Drop to Tank I �g PRESSURE DISTRIBUTION MOUND SYSTEM ,-H"r EL._
• Min. I"io 8' IPumping TH.-3 EL.-
Max.1"to4' - =` ' --VA).-1`C-c... SN'A\-.\--nui Chamber ELEVATION at PROPOSED PUMPING
4"to 6"dia.pipe CHAMBER-Tt-v Qiawt-.=.1Q.•o
SYSTEM DESIGN -MOUND L'� ' ' a)-k. ,' �Cl(�4xYr-too.co
TYPE- , y BEDROOM , Average percolation rate-3._-__L min./inch (design.83 sq.ft treatment area per gal. of daily sewage flow)
(.90D gal./day x.83sq.ft/gal. 99`rr sq.ft.of treatment area +10% {4' sq.ft. (= IOft.width=.L_,.-•-•:-=ft length of bed area+side slope run Lto I xaL height- Y. ft.x ft.lawn•area needed)
Clean rock needed- r`+' sq.ft.treatment area x I.°s' depth of rock=57 u cu.ft--27= _L cu.yds.(3/4"to 2 I/frdia, ,includes 2"of rock above pipe)
C-c>4 Clean sand fill below rock neede O .yds..approx. , sandy loam back fill 'CU yds.approx., topsoil 6".'?O cu.yd. aO - 'A
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W ASi O �5'_ CIM��� -CO ASO a-.o is '�O -C-b`,S0\�Co,-4 \v-y-k-t.t-‘L-1W- S1,.o L -_Nt-C.
YS-_ --z:,..1.+ 1__,•__1±-__
Number of tanks required , a , st tank �0 J gol. , 2nd iankin)u gal.minimums F LP P1-.v \VI)J ��-ia.,,-;,c-
Pumping chamber capacity- 25% of daily sewage flow of gal.+reserve storage of 15 OOa 1/BR ca 0 gal.+pipe bock drainage-
PROPERTY OF: 1-°`�).-A ' ol_1bA..�
of ) `r- gal./IOO lin.ft.of 'a "dia. supply pipe, Iin.ft.needed,`, gal.4 1 manifold x gal./IOO haft of�"dia.pipe,In.ftneeded 7 , L- gal. - 1 cd S W N 1'< (..D/D+Y-- Llva-S_
. total capacity needed r)cdCe (plusareaforpump) l-15'E._ r,%r'. /CO 6 c.-.1-c \._ • Qgptoo • )..1, ,, 1l r\4.-f ..-6b •
pipe 11 " \ l/� 'dia. perforations 34. "apart
- Distribution I � dia. ,�s`7 tlin.ft.,
Pump p. (Pum aloe co ci al. 4 cies/do ) uz.�� a3 ' Nv-L-- c-�� I
size. a h p po tY 19 4cycles/day) '�ss� �L �l O 'dal l t,,, n . I $-P TESTING fN .
Note t-When constructing bed , this area shout' be shaped - Note: Distance from treatment ores ‘b- neighboring wells— �' - �-
Designed By: •
to Civert run-off from entering treatment area r,o,e :_/_/_ , 'r-'.� 5'2-497-3566
�
10.11/4_,4 V1 JA-, L a_..)1 LJ1I I I LII•A•Ll1LLL1
' (For Flows up to 1200 gpd)
A. FLOW Estimated Sewage Flows in Gallons per day
Estimated (rc:,v gpd (see pages D-7 or I-3;4,5) Number (gpd)
or measured - gpd x 1.5 = -- . Bedro
ofoms Type I Type II Type 111 IV
2 300 225 180
B. SEPTIC TANK LIQUID VOLUMES 3 450 300 218 60%
4 600 375 256 °f she
values
_'-/DUDgallons (see pages C-3 or C-5) 5 750 450 294 i
p g 6 900 525 332 k'';',.1.
7 1050 600 370 so
8 1200 675 408 taunts
C. SOILS (refer to site evaluation) I.
1. Depth to restricting layer = I Ti - I H It inches Septic Tank Capacities,in ga nuns
Number of Minimum Liquid Liquid capacity with
2. Depth of percolation tests = I inches Bedrooms Capacity garbage disposal
3. Percolation rate 7 . mpi 2 or less 750 1125
3 or 4 IOOD 1500
4. Land slope 3. % , 6
4"99 ao 22500
oveD. ROCK LAYER DIMENSIONS
1. Multiply flow rate by 0.83 to obtain required area of rock
layer: Daily Flow x 0.83 =
(.,o 0 gpd x 0.83 sq. ft./gpd =LI cl q sq. ft.-r to =5'-)r)'
2. Select width of rock layer (10 feet or less) = / ) ft.
3. Length of rock layer = Area ÷ Width =
t-1 '1 sq. ft. 4.- /0 ft. = SS ft. Rock Bed
' r•r•r•r•r•r•r•r r•r•r•r•r•
ti•ti.i..„y•ti•ti•ti-.,6yi ti•ti•z6 Width 510ft.
�•r•r•r•r•r•r•r•r•r•r•r;f,r;r;r
E. ROCK VOLUME F Length -f
1. Multiply rock area by rock depth to get cubic feet of rock;
S1-11 sq. ft. x 1.os'ft. = 5')41 cu. ft.
2. Divide cu. ft. by 27 cu. ft./cu. yd. to get cubic yards;
.5-)Li* cu. ft. 27 = a cu. yd.
3. Multiply cubic yards by 1.4 to get weight of rock in tons;
I cu. yd. x 1.4 ton/cu. yd. = a`3 tons.
F. ADSORPTION WIDTH L1-1I L( Ld4wi
Absorption Width Sizing Table
1. Percolation rate in top 12 inches of soil is 3..- mpi
Percolation Rale Gallons Ratio of
2. Select allowable soil loading rate from table on page E-; in Minutes per Soil Texture per day per Absorption width
Li-.S---
gpd/f l Inch(MPI) square fool to Rock
Layer
3. Calculate adsorption width ratio by dividing rock layer Fasterthan 0.1 • Coarse Sand --.•.
0.1 to 5 Sand 1.20 1.00
loading rate of 1.20 gpd/ft2 by allowable soil loading rate; 0.1 to 5•• Fine Sand•• 0.60 2.00
1.20 gpd/ft21 H s gpd/ft2= .1., . 6t1 15 Sandy Lons 0.79 12s2
16 to 30 Lon0.60 2.1q
31 to 45 Silt Loam 0.50 2.40
Check this value on page E-16. 46to60. _Clay Loam 43,45 2.67
60 to 120 Clay 0.24 5.00
4. Multiply adsorption width ratio by rock layer width to get Slo2erthan Clay
required adsorption width;
a•(,1 ) x IL) ft = qc:,.') ft
I
. G. DOWNSLOPE DIKE WIDTH
1. If landslope is 2.9 percent or less, basal width includes both the
upslope and downslope dike widths,
2. Calculate minimum mound size based on geometery:
a. Determine depth of clean sand fill at upslope edge of rock
layer: Separation z-b feet
b. Multiply rock layer width by landslope to determine drop
in elevation; Slope Difference •
10 x 2 % 1100 = .Z feet
feel Separationc. Add depth of clean sand depth of clean sand for u"s°pekrt
- z kel (wfe.e,�
separation at upslope edge (2a) to depth of rock layer to "ro N
rock depth and the depth of cover to find the total mound Downslope Width
1iLko \_
height at upslope edge of rock layer;
-.0 ft + l ft + l ft = y feet
d. Enter table on page bottom with landslope and upslope
dike ratio. Select dike multiplier of 3 .'? .
e. Multiply dike multiplier by upslope mound height
to get upslope dike width: 11.0 x 3.r) = 1 S feet
f. Add the depth of slope difference (2b) to the upslope
height to get the downslope height y .0 + .Z = 4.--L._feet
g. Enter table on page E-18 with landslope and downslope
dike ratio. Select dike multiplier of U .3 S .
h. Multiply dike multiplier by downslope mound height
to get downslope dike width: l _-L x I-1..' s = i c' feet
• i. Mininmum mound width is the sum of upslope dike
width plus rock layer width plus downslope dike width;
1 S ft + /o ft + ft = 4'S feet Rock BedW• dthi6 ' '. PbpeakWldthJ :::.
j. Subtract the Minimum width G.i from the Absorption
width F.4 to find the Additional Downslope required for • :ia`
�Absorption •i::::::•:::•:::•:::•::
: ` ''' '''' ''' ''
•
Up6bpeakcWidthj ▪.: : c ' :UP6>opeaieWidtJ-t,.'1 ft.- u ft = -iv-s feet
k. Add the Additional Downslope required for Absorption P q rP • Do�lope`D a Wi t)
. to the downslope dike width and recalulate the Total 1
Mound Width which is is the sum of upslope dike
width plus rock layer width plus downslope dike width
i ft + /0 ft + 1 e ft = 43 feet l Total Length ce4C iI
1. Total mound length is the sum of upslope dike width
plus rock layer length plus upslope dike width;
ft + S 5 ft + 1 5 ft = 'XS feet
I (e? -i- ss -i- 1tz5/ q )
Downslope Upsiope
3:1 4:1 5:1 6:1 7:1 3:1 4:1 5:1 6:1 7:1 8:1
%slope
0 3.0 4.0 5.0 6.0 7.0 3.0 4.0 5.0 6.0 7.0 8.0
1 3.09 4.17 5.26 6.38 753 2.91 3.85 4.76 5.66 6.54 7.41
-2--------_3.19 -_C 3S� 556 6.82 8.14 2.83 Q3D 454 5.36 6.14 6.90
3 3.30 454 5:88---7.32---8.86 -2.75- 337 4.35 5.08 5.79 6.45
4 3.41 4.76 6.25 7.89 9.72 2.68 3.45 4.17 4.84 5.46 6.06
5 3.53 5.00 6.67 8.57 10.77 2.61 3.33 4.00 4.62 5.19 5.71
i 6 3.66 5.26 7.14 9.38 12.07 254 3.23 3.85 4.41 4.93 5.41
7 3.80 5.56 7.69 10.34 13.73 2.48 3.12 3.70 4.23 4.70 5.13
8 3.95 5.88 8.33 1154 15.91 2.42 3.03 3.57 4335 4.49 4.88
9 4.11 6.25 9.09 13.04 18.92 2.36 2.94 3.45 3.90 4.30 4.65
10 4.29 6.67 10.0 15.00 23.33 2.31 2.86 3.33 3.75 4.12 4.44
11 4.48 7.14 11.11 17.6.5 30.43 2.26 2.78 3.23 3.61 3.95 4.26
12 4.69 7.69 1250 21.43 43.75 2.21 2.70 3.12 3.49 3.80 4.08
•
. PUMP SELECTION PROCEDURE
A. Determine pump capacity:
GIavity Distribution END PERFORATION OF A PERFORATED LATERAL
1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of Grass Cover
water use rate. •'<'`
��`. Topsoil \` �°.
2. Maximum suggested for delivery to a drop box of a home system is 2,700 . _.... ... .
;1-.1.. ' `, Layer of GeolmIlle Fobrk tot tour-
gallons per hour(45 gpm)to prevent build-up of pressure in drop box. =_; Loamy sand Layer .Inclayer er hay or draw cowered
. _ with red rode paper)
( C71 UR1IIE7____ - phi rOlrrforap n DrIlldp HorI onIollr
Pressure Distribution .w .
3. a. Select number of perforated laterals .`"oPus -` Al east 12•to Edge
r . Field Roc ._, of Rock Layer
b. Select perforation spacing= 3 ft. ' eau;'d LoLo led of
r clean Sand Layer
c. Subtract 2 ft.from the rock layer length.
teral
Radc1eyerkngtt,-2 ft.= S3 ft.
Original Soli Properly Scarllled
Wore Placing Sand Layer
d. Determine the number of spaces between perforations.
Length perf.spacing= „5-2 ft.+ ft.= ►'7 spaces TABLE OF PERFORATION DISCHARGES IN CPM
e. l r1 spaces+ 1 = 1 ee perforations/lateral
' f. Multiply perforations per lateral by number of laterals to Head Perforation diameter(inches)
get total number of perforations. ,
e x. = <L1 perforations. �" �'
1.0a 036 0.74
5u x'()LI = �-f ugpm. 1-5 0.69 0.90
g
t 4 2.0b 0.80 1.04
2.5 0.89 1.17
SELECTED PUMP CAPACITY 1...-.) (..) 3.00.98 1.28
gpm 4.0 1 1.1133 1.47
5.0 1.26 1.65
B.Determine head requirements:
1. Elevation difference betweenpumpand point of discharge. aUse 1.0 foot of head for residential systems.
Ig bUse 2.0 feet of head for other establishments
feet
2. If pumping to a pressure distribution system,add five feet for pressure
required at manifold
5- feet
3. Friction loss Pipe Length
t
a. Enter friction loss table with gpm and pipe diameter. Point of Discharge
Read friction loss in feet per 100 feet from table. 1 x
F.L.= "DA.t-{` ft./100 ft of pipe Elevation Difference
b. Determine total pipe length from pump to discharge Pump 41.1_
point. Add 25 percent to pipe length for fitting
loss,or use a fitting loss chart. Equivalent pipe F-18b
length-1.25 times pipe length= 1.5 inch 2.0 inch 3.0 inch
a.(.. x 1.25 = DS-0 feetgpm Frialca logs per 100 ft of pipe
c. Calculate total friction loss by multiplying 10 0.69 0.20
friction loss in ft/100 ft by equivalent pipe length. 12 0.96 0.28
Total friction loss= a,SC) x D-(,Lt +100= '? feet 14 1.28 0.38
4. Total head required is the sum of elevation difference, 16 1.63 0.48
18 2.03 0.60
special head requirements,and total friction loss. 20 2.47 0.73 0.11
25 3.73 1.11 0.16
11 + s + '7 30 5.23 1.55 0.23
35 7.90 2.06 0.30
(1) (2) (3c) 40 11.07 2.64 0.39
45 14.73 3.28 0.48
TOTAL HEAD feet 50 3.99 0.58
55 4.76 0.70
60 5.60 0.82
C. Pump selection -
(-- 1. A pump must be selected to deliver at least ti 0 gpm (Step A)
with at least afeet of total head (Step B).
CER'I'II' ICA'1'1ON 4 0062 / LoT, of Soil Borings
Location or Project John Dougan, 2785 White Oak Circle, Orono
Borings made by S-P Testing, Inc . Steve Schirmers Date 7-20-93
Classifiction System: AASHO ; USDA-SCS X ; Unified ; Other
Auger used (check two) : Hand X , or Power , Flight , or Bucket X
Depth, Boring number 1 Depth , Boring number 2
in /00 .7 in 160 •'z
feet Surface elevation -g8 ;1" feet Surface elevation -
0 - - - --- 0 - ------ ---
Topsoil very dark Topsoil very dark
brown loam0 - 10" brown loam
1 - 0 - 1 ' -MOTTLED 1 ' 1 - Brown
Rusty gray loam clay loam 10" - 1 ' 2"-MOTTLED 1' 2 '
1 ' - 1 ' 8" Rusty gray brown
2 - Rusty olive gray 2 - clay loam
clay loam
l ' 2" - 2 ' 4"
1 ' 8" - 3 ' Rusty gray clay loam
3 - 3 -
2 ' 4" - 3 ' 4"
Rusty olive gray
clay loam strong
Rusty olive gray
4 - 4 - loam strong
3 ' - 5 ' 3 ' 4" - 5 '
5 - 5 - -
6 - 6 -
7 - 7 -
8 - 8 -
End of boring at 5 ' feet. End of boring at 5 ' feet.
Standing water table : Standing water table :
present at 2 ' 9" 1 ' 11"of depth, present at 1 ' 11" feet of depth,
26hours after boring . 26 hours after boring .
Not present in hoe . Not present in hole .
Mottled soil : Mottled soil :
Observed at 1 ' feet of depth. Observed at 1 ' 2" feet of depth.
Not present in hole . Not present in hole
Comments : Comments :
CERT1UICATIOH 4 00627 Logs of Soil Borings
Location or ProjectJohn Dougan, 2785 White Oak Circle, Orono
Borings made by S-P Testing, Inc . Steve Schirmers Date 7-20-93
Classifiction System: AASHO ; USDA-SCS X ; Unified ; Other
Auger used (check two) : Hand X , or Power , Flight , or Bucket X
Depth, Boring number 3 _ Depth, Boring number
in /cU 2- in
feet Surface elevation feet Surface elevation
0 - - - — 0 - - ---
1 - MOTTLED - 1 ' 1 -
2 - 2 -
SAME AS BORING 1
3 - 3 -
4 - 4 -
5 - 5 -
6 - 6 -
7 - 7 -
8 - 8 -
End of boring at 5 ' feet. End of boring at feet.
Standing water table: Standing water table :
present at 2 ' 4" feet of depth, present at feet of depth,
26 hours after boring . hours after boring .
Not present in hole Not present in hole
Mottled soil : Mottled soil :
•
Observed at 1 feet of depth. Observed at feet of depth.
Not present in hole Not present in hole
Comments : Comments :
CERT. #00627
PERCOLATION TEST DATA SHEET
s-P Testing , Inc . 7-21-93 12 : 30
Percolation test readings made by on_ starting at (p.m.
,J fr)
Test hole location 2785 White Oak Circle , Bole number 1- , Date hole was prepared 7-20-93
Depth of hole bottom 23 inches,Diameter of hole 6 inches
Soil data from test hole:
Depth, inches Soil texture
0 - 12" Topsoil very dark brown loam
Method of scratching sidewall Knife
Depth of gravel in bottom of hole 2 inches
7-20-93 10 : 00am 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
rime interval, Measurement, Drop in water rate, Remarks
minutes inches level, inches minutes per
inch
• 12 : 20 prefill 6
12:30 12 : 45 3-5/8 4 . 1 15 min
12 : 50 1 : 05 It
" " " "
1 : 06 1: 21 "
•
Percolation rate = 4 . 1 minutes per inch.
. CERT. #00627
PERCOLATION TEST DATA SHEET
S-P Testing, Inc. 7-21-93 12 : 31 an
Percolation test readings made by on starting at p.m.
Test hole location 2785 White Oak Circle , Hole number 2 , Date hole was prepared 7—2 0—9 3
Depth of hole bottom 1 2 _inches,Diameter of hole 6 inches
Soil data from test hole:
Depth, inches Soil texture
0 - 12" Topsoil very dark brown loam
Method of scratching sidewall Knife
Depth of gravel in bottom of hole 2 inches
7-20-93 10 :00am 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
1 ime interval, Measurement, Drop in water rate, Remarks
minutes inches level, inches minutes per
inch
12 : 20 prefill 6
12 : 31 12: 46 t, 4 3 . 8 15 min
12 : 49 1: 04 " 3-11/16 4 . 1 " "
1; 07 1: 22 3-5/8 4 . 1 i, "
4
Percolation rate = ' 0
minutes per inch.
CEPT. #00627
PERCOLATION TEST DATA SIIEET
S-P Testing, Inc. 7-21-93 12 : 32
Percolation test readings made by on— starting at
hfnrrl
Test hole location 2785 White Oak Circle 11o1e number 3 Date holt was prepared 7-20-93
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 brown loam
Method of scratching sidewall Knife
Depth of gravel in bottom of hole 2 inches
7-20-93 10 : 00am 12
Date and hour of initial water filling ,Depth of initial water filling inches above hole bottom
Automatic siphon
Method used to maintain at least 12 inches of water depth in hole for at least 4 hours
6
,Maximum water depth above hole bottom during test inches
Time Percolation
ime interval, Measurement, Drop in water rate, Remarks
minutes inches level, inches minutes per
inch
• 12 : 20 prefill 6
12 : 32 12 : 47 4-9/ 16 3. 3 15 min
12: 48 1: 03 "
1:08 1: 23 "
•
3 3
Percolation rate = minutes per inch.
LOAMY SAND CAP
PERFORATED LAYER FABRICA CTEXTIIE \ PERFORATED LATERAL
LATERALS
:-•-•••.......,-,---•••--'.:F.',.., GRASS COVER 6 INCHES•
- �� TOPSOIL
SANDY LOAM SOIL -' j.•y' - '''"'.':,':,',...i-•,....••• • :LEAN SAND FILL �_.�
'' '' / MAXIMUM SLOPE--/T� i��
LAYER OF GEOTEXTILE :tie. �� `� ��✓/%
FABRIC OR 4 INCA IES OF • ' '� �'J ! ' 7 TOPSOIL 3/4 To 2N/zR INCHES K 4.
yPLOWED OR i. 5
Y ,•, „ /' fir' DISKED SURFACE . ' To
' //,/ / ,rte SUBSOIL
% •'�f i �' ii CROSS CROSS SECTION A- A
PIPE FROM PUMP /,/ /' / / r;%
],' �/ ,.'/ • •l .. .r, ,r PIPE FROM
' ./ PUMPING CHAMBER
/
CLEAN ROCK DIVERSION FOR 1
� �%/ , Al �/� I SURFACE WATER _ u../
I I i
6` TOPSOIL/ /- • i' /// /' Y
a -
r _
Pi/
1 1 ,
-�-.t:,"r 4.".-4;:e-----jr---- �' " i ;i�' aT -PERFORATED
` 3 t I �
6--,--- r9 Z_, MQx LATERALS -
•
_�� S1 oPC� .tom • • �-...f.-...,:•...... ..i.,:!:..;.!.
- . , AMf�. _ I II
gAN ` . . • . ' -71-4<Z 2 , : , , T
SrDLL 36.. 1. !.. BED AREA z
OD l _ W •
R°KEN ER - _
BAR SAYE 0' - - �) z z I __ m
V t."
I J.
R - 20 1 / o#Q I INCHES
INCHES -__
-
LAYOUT OF PERFORATED PIPE LATERALS FOR -
PRESSURE DISTRIBUTION IN MOUND
1 10 FEET_� _ _DIKE
DIKE -- MAX.
PERFORATED PLASTIC PIPE _ •'
TOTAL WIDTH \
SPACING t `i 1
PERFORATIONS SPACED 36' _ _ RfORAriON I I I 1 ' '
END ON CENTER. PERFORATION ' _ pE
SIZE MAY BE /16: /3z: �A PLAN VIEW
VIEW OR '/,'. -
2"MANIFOLD END PERFORATION OF A PERFORATED LATERAL
�
PIPE..-,j' -Gros. Corn
°� PERFORATIONS ON BOTTOM OF ;'i r "�"
\ PLASTIC PIPE ���� �� /f N •• a.My`�
90 �f� -_ _ Loy«of Gwl..ul• ioDrlc (erfo.r•
\\",
�Y `i '/ Loamy Sorel Lar« ,;7hcMa
\ (ALTERNATE LOCATION +rr.yd ro.n*9oP•r)
OF PIPE FROM PUMP) n "' - - y
1.\\\
J I t1� r�,r�l�d ' P.rf C p OrJ1.J horizontally
\\ /% \ ., `f Plus ,�W° C D tNor Top
r r/i Plus ,�-Al Lwu 12•to Edge
ZCAP O. • it tO(°tn Field Rock ,4y✓,, of Roc* Lars
1" P.rlorouons Loc°Nd of
RarEo 2 PIPE FROM Clean Sad Loy« Ronan of Lorual
>,;,.-,.,.------'--. PERF PUMPING CHAMBER
OF• ., 51H `Orynol Soil Plno.,Ie Scorlh.d
I7-$
REDWOOD, CEDAR OR
WATER 1 IGT IT Q LOCKABLE ELECTRIC BOX— TREATED POST (4 x 4 min)
PLUGS OR ELECTRIC CONNECTIONS— -----.. _t.t...„----ALL ELECTRIC CONNECTIONS MADE
_ INSIDE BOX
2" PVC CONDUIT SCHEDULE 80 6'SPACE LOOP OF POWER CORD FOR
MANHOLE COVER CHAINED El LOCKED I SETTLEMENT
SEALED MANHOLE RINGS— i.FINAL GRADE
•"> , f� J —WIRE
AT LEAST 12' 4.1'
BELOW GRADE
UNION
•�. FROM POWER SUPPLY
—— i PIPEMIS LAID ON A UNIFORM SLOPE FROM
/ t
POR PROAER NDUPINBACK IL TREATMENT AREA
SEALED TANK COVER i-IF PIPE AT TANK MUST BE LOWER THAN
UNIONTO GET ELEVATION FOR DRAINBACK,
PLASTIC ROPE OR CHAIN r'� ) ' A 1/4 INCH WEEP HOLE MUST DE USED
WITH ANCHOR— i ) •
— WEEP HOLE
ALARM FLOAT ON SEPARATE
ELECTRICAL CIRCUIT--
4 NOTES: ELECTRICAL WIRE FROM POWER SUPPLY
START LEVELS7_— -i —')-7
_. MUST NOT RUN OVER ANY TANKS BUT
MUST BE LAID BESIDE OTHER TANKS
3"� `\ .1 AND MUST BE PLACED IN CONDUIT
)c, ALONG POST
SHUT-OFF V `7 __ . _ _ ELECTRICAL CORDS FROM PUMP AND
' FLOATS MUST BE RUN THROUGH
CONDUIT. WIRES CANNOT HAVE GROUND
PUMP CONTROL FLOAT- CONTACT.
000
( ) At( s
Figure F-I
METAL
COVER
/P i = • i
• 1. 1r
Ia
____\ ,1 ':'Z't
CONCRETE « ! ,,4:
MANHOLE — -
RING
i'\\ Cr
METHODS OF SECURING MANHOLE COVER TO PREVENT
UNAUTHORIZED ENTRY
Figure C-14
. ......_______.
VERTICAL SIDEWALL SEPTIC TANK
..-- -FINISHED GRADE
1 ‘,,, L----w„,---k• 1 -*---Lir-
-----•\'`)•• AT LEAST 9.•
LEAST 6"TO 12' SOIL 4" DIA.
4" DIA. -I COVER
. ...„
MIN --AT LEAST I,, -- AT LEAST 1. 1
1
_
I -I—-
A
DIMENSIONS FOR TANKS WITH VERTICAL SID_ES A
- • - --- ---..• _ .
w itirt! w 24 MINIMUM
— —
LENGTH L 2 TO 31 TIMES THE WIDTH
- — --
1 L3 DIAMETER GO" MINIMUM
. . -- _.
--1- DEPTH D 30* MINIMUMi 78" MAXIMUM
—. .—_
C
A 0.2 0 4
AT LEAST "..___... . _.
MINI
8
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-- 6"3 — -
—
c 0 11- 0
-- . —
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110 IF Si
1 S A1 iilAillY 1E19 Al L7AS1 I 111111E5 III otsur trn 4 AW41101E COVEliS 51(411.11F 1OCW11ED Wilt 0N 12 INCHES
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Do.01-1.•,ION N40 1.0C,A1F11 Yew 104 61E61 01 ALL I ANA lilt:COVi.11 lAUS 1 U E SEW 1 C 0 10 111E<NI scum
wsit.s s !.'..1 PATH I ON U1SIANcE or TWF EN FNUCE Hal PIPE AND
3. AN 1 NtirtClION rim'or Al 11,61•it.L3 IL NAME 1 Ell Nr MYST roril ON asrrtr stssa.Ite NO ES5 ULAN'[NCI 0.!:
011A MANI KWE 511A11 RE LOCAL ED(NM 00111111E'MET Oil NO 6413116 IIWI 12!CMS.
MO CAML I U(vkT n 111 min EA LINT or it r Er"el IOU 6 ron i*team ts.i.croanntcAt Isitss•01,41/6.1ON A ISO 1!.0
p,ptss,i1A44.44(Ili(55)4'55 1111_(11414 FII INF Of 11.1 AND 0114 11911N C Is 00(1
psi t t.s ovtrmc5 oil CMIINIY 1(15 A 11010)misil.C 1 WIN
VIII IA 5.1 111 1.0CAILO I*IVY(FN 11IF IRE 1 AtiL14111111
MINES
-- __ — •
• .
— —
PENCL
tkifirMS111.0111
-:-
-1.__I • MARKS
6 . 7.,,. ,,.,.. itir-....••Si 1. . 0_47.
T 20- ty •
t •
P. tf
j I
INLET-h - ---
- '4%1? 'SCUM . ' .'' I it!. YA-
,
TI• _• -3 OUTLET
'A. 7: • ...,:•..,-,3 - 1". '"'---.-------g-y.., -",....": , : .
. - .. .,.....q1%. ./TLET LEVEL " i t 1•1 , .!,I '
fr .•tt.,1.
r 1. ...
t- i -..,.
—.-— SCUM CLEAR SPACE --- ' ----177.1 1 T y,_ LEAN OUT TANK WHEN:
t.,
— — —
' '''' IS 3" OR LESS OR
-- -- . —
—
- - •: ---.-_— - — I) 0 "B" IS 12"OR LESS
,i, . ,... --....._____:-.--- --....- .. .. u •
.:: ri.;;,,. ....;,....;' BLACK COLOR
SLUDGE
iii.!;V::::•••.;-;:.•• • DISTINGUISHES SLUDGE
•'.. ICA .., LAYER FROM LIQUID
AkTizs.Ailidi ...... . .....4 i.,zi,;••••'.: I .i:
.4 • 3•11,1 ••
Y w
1,,,,
MEASURE SCUM AND SLUDGE ACCUMULATIONS
IN THE SEPTIC TANK