HomeMy WebLinkAbout1987-06-08 Site Evaluation Report/„MS
Koch’s Soil Testing
P.O. Box B1
i Loretto, MN 55357
Tel: (612)479-2637
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Robert Koch ^ttoX^C^^ PC/? ^/i) A
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/ /PERCOLATION TEST DATA SHEET
Test hole location 3 Hole ntaber
Date test hole was prepared — T? _ _, Depth of hole bottoa. /1 inches*.
Dlaaeter of hole, U Inches.
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Soil data froa test holeV
Depth, Inches
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Soil texture
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Hethod of scratchlnE sldevall K)<i^
Depth of pca-slsed gravel In bottoa*6f hole,Inches.
Date and hour of Initial water filling ^ ^ T
Depth of Initial water filling, 1 Z- inches above hole bottoa.
Method used to maintain at least 12 inches of watei: depth ia*hole for at least
4 hours
onPercolation test readings aade by /P A^onA. j_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
(f>,zSi ' ^7- - -starting at 9 Haxlaua water depth above holt botto
(date) ^ ——p.a.(date) .
during teat, _ _ _ _^ inches.
Time
Tlae
Interval,
Minutes
Meaaureaent,
' Inches
Drop In wat^r
level, inch^
Percolation
rate,
ainuf e per
inch'
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Percolation rate ■4o minutes per inch.
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PERCOLATION TEST DATA SHEET
hole location Hole nii«ber_3=-Test noie xocacion ^_ ___ _— - ^•I Date teat hole »« nreoar^l _ _ _. D«Pth ot hole botto-.iS_ lnc.,«.
DlaMter of hole, (a Inches.
Soil data froa test hoU:
Depth, Inches
O - //
/j -i- yy.
Method of scratching sidevall
Depth of pea-slsed grsvel In botton'of hole,*Z-IncliM*
3/^Date and hour of Intc^l water filling £s - S'- 8* 7
Depth of initial water filling, /4- - - -Inehee hoU botto«
uvpuil Vlw *aa*w^ee* - - - - - - -w ■■ ^ | , • •
Method used to nalntaln at l^st 12 Inches of water depth lii'hoU for at least
4 hours
o aj^lntaln at l^st 12 Inches of vi
Percolation test readj^s .aade by
C — starting, at ^
on
(date)
during test.
3^-p.B.
voter depth above hole botto
Inches.
Time
Time
Interval,
Minutes
Measurement,
' * Inches
Drop In wat^r
level, inch^a
Fereoletiom
rate,
■iButee per
Inch'
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Percolation race 3^,3 minutes per Inch.
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*P.OaBox B1
Loretto, MN 55357
Tel: (612)479-2637
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Robert Koch
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DESIGN LATA: (for a StarifJard IruUyidual Sewatie Treatment ilystetn)
A. .Sewage Flow ^te based on MTI Rules Port 70S0 Table II
Type_X* House Redrooms GPD ( Gallons per day)
. C.. Soil CharaQteristlcs
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1) Depth.to high seasonal zone of saturation level
n Mottled soil level)5‘0r - Ct, L Inches
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2) Ave. Percolation:. Rate b 3 min/inch
((•desif'n rangeZ/JTTcnilri/inch
3) Soil sizing factor ^ n sq.ft./god
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U) Landslope i
D,. Treatment Area ( Drainfield) Required
1) Soil sizing factor X daily'flow ratp^
:;tq.rt./gpd X gpd.
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=• /OCo (minimum soil treatmeia^ wea)
2) Maximun Trench Depth Zo c3
3) Trench Width: 3
aq. ft.- -\r^
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Trench Length
sq
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ft trench bottom area«^-
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Lineal ft. of trench needed
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trench width *
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5) Wumber of
Trench Spacing
S'7)Dlstrlbution type
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ti-enches neede.l: — . .^*11 (i/
o lli.on center * •
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6) Rock Depth
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Drop boxes ( a.ny slope ) ..;*■ ■' *; . ; v:Distribution
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total
9) Rock Volume ^*3"^ cubic y.ds.So ■a
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10) nel^acK?*:
Tanks ■ /r.J^
7 6'/^
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Treatment, -area
<*rom the property lines
from the well
Tron the bldg
from lakes streaisr. .
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TRENCH CONSTRUCTION DETAILS
TRENCH ROCK COVER
r-iNLET rm PIPE TO NEXT
DROP BOX
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r 4* DIAMETER
\ INSPECTION
\ WELL WITH
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/c depth OF clean ROCK
■.».«■>«-
DROP BOX
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TRENCH UNCTH • fEET 4
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DROP BOX , rni'aWiNo
(o»* \ ^inspection, >...............
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outlets
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to trench
backfill
ROCK
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backfill . ; . ‘'^^1.
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outlet to
TRENCH
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inlet from
SEPTIC^ Ti^K
OR PREVIOCPREVIOUS
DROP BOXZ
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IPPLV LINE
;0 NEXT
DROP BOX
* gss®tiulf or^j
- oisTwwTioM fire shau. k h^auio teva.lT
5L10HTIY aWflKA. *(4* Ml 10#*
. SCARIFY TROICM BOTTOM AW WOWI^^ HIS: >
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outlet to
TRENCH
■_ TRENCH.^,,
.suoskteo TiipicH:ufluyMaS:A*^’-^-H^^^'-?;rTOP OF TRCNW RCOCiF reRj^AOtC^ .
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COVERS. ROCK.
-invert of INI/T Ml^tt KT tttf . . ;
INCH higher Tr^ lNvEOT or SUPPLY .. ,
PIPE TO NEXT OhOP BOX. . ^ • i . ;
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construction specifications
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1. All construction, unless otherwise noted, is to be perforned in strict ifA*: ; tj. • h,
accordance with the provisions of MN Rules. Part 7080. Individual Sewage
Treatment Systems Standards. Any deviation from this design shall be
approved in writing by the owner or his representative.
2. The drainfield treatment area will be staked out by the owner or his
representative before construction. Construction vehicle traffic within
this area shall be limited to backhoe and/or small tracked vehicles before,
during, and after construction.
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3.Trench construction shall not occur if soil moisture has reached or
surpassed plastic limit.
Trench bottoms and rock shall be installed level and parallel to surface
contours as nearly as possible.
A.
5.Only clean. Insoluble rock 3/A'' to 2 1/2" mean diameter shall be Installed
In trenches.
6. Sewer pipe shall be A" diameter, schedule AO PVC or of greater strength.
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7. Distribution pipe shall be A" diameter PVC with a minimum 1,000 lbs.
crushing strength and one row of 1/2" diameter holes spaced no greater than
36" apart and installed at the 6 o'clock position. Pipes shall be
Installed level with a slope variance of no more than 2" In 50' down and X
away from drop boxes.
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* *8. Drop box inlets and outlets shall be as noted in the drawings.
9. Drop boxes shall be Installed on firm, natural soil as will sewer pipe
connecting drop boxes.
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, 10. Trench rock shall be covered with A" of straw and untreated building paper
or a thin, permeable, synthetic fabric from trench wall to trench wall
leaving no rock uncovered.
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ll. Capped Inspection pipes shall be installed at the end of each trench as
noted in the drawings. Pipes shall extend A" above final grade.
12. The septic tank shall be a vertical sidewall, watertight,
corrosion-resistant, one-piece, precast concrete tank with gasketed lid.
The lid shall have a minimum 20" diameter manhole buried between 6" and 12"
deep and A" dapped inspection pipes extending A" above grade, centered over
the inlet anil outlet baffles as noted in the drawings.
•!Bde of acid resistant plastic or flbergUssi ^
r corrosion-resistant connections r
n place of baffles.. • ••
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13. Septic tank baffles shall be made of acid
and attached with at least four corrosion
A" sanitary tees may be used In place of > U‘
■ ■ :■ • • • ■. . '
lA. Final grading upslope of the drainfield area shall provide for diversion of [
runoff away from the drainfield, as shall grading around the septic, tank.'g
15. Turf establishment shall be the responsibility of the owner.
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