HomeMy WebLinkAbout1985-10-28 Septic System Design ReportSYSTEM DESIGN /
FOR JEFF MARTINEAU
OF LOT 5, BLOCK 2
LONG, LAKE COUNTRY CLUB ADDITION
ORONO, MINNESOTA
10-28-85
1. Percolation Rate, Type of System.
55.5 minutes per inch. Mound System.
2. Proposed Flow Rate.
3 bedrooms @ 150 C.P.D. 450 G.P.D.
3. Size of Rock Bed.
0.83 factor when clean sand is used x 450 G.P.D. > 375 sq. ft. of area.
This amounts to a rock bed 10 feet wide x 37.5 feet long.
4. Dike 6 Basal Width.
Since the ground slope is slightly greater than 3% use only the downslope
for basal width. Use 2.67 factor times 10 feet or 26.7 feet. Since this is
greater than a 4:1 slope it is allowable. Use 4:1 sideslopes on all other
dike elopes.
5. Septic Tanks.
The existing tanks should be checked tc see that they meet current require-
ments and are watertight. If not, 2 tanks of 1000 and 750 gallons minimum
would be needed. In addition, a third tank will be needed to house the pump
required for pressure distribution to the mound. All construction and mater-
ials must adhere to the provisions of the City of Orono.
7. Additional Information.
Soil boring # 1 was taken in a small Swale towards the south end of the
proposed drainfield to see the worst possible conditions. Thus, the rock
bed area is shown on the flatter and higher area to the north. Also, drain-
age from the house downspouts should be diverted away from the mound by
grading. If any additional information is needed, please contact me.
Sincerely,
PERCOR, INC.
Mark S. Gronberg, P.E
PCA certified
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PMOIATION TEST DATA �QR
Tsat hole location Nola srber
Date test hole was prepared Depth of bole botts'Lz inches.
Diameter of hole. ___L."_ inches.
Soil data -from test bole:
Depth, laches =oil testure
Method of scratctinR
Depth of pas -sired gravel in bottom of hole, inches.
Date and hc-.sr of initial water filling Ley —2 <'—k /'11.
Depth of initial water filling, if inches above hole bottom.
Mcthod used to maintain at least 12 inches of water depth is holt for at least
G hours j
Percolation test readings mads by (.
on
starting at =%:�: Maximus water depth above hole bottom
(date) y .
tur=ng :est, inches.
Percolation rate 0 "1 '/. I/ adsotes per its*.
1004 Mi. ioeatior_ /U"'
Date toot bole Mas propered-L.P. - N"6s
OLwter of bele... laches.
boil data • from tut helot
0024, inches emu t�D
e, - V '
I"A" of scrotebanR sidewali
Depth of pairsired gravel in bottom of bale$ 4_m� In .
Date and hcur of initial water fi:liag / �+ •. c�_�;+ •oa: /!raj
Depth of initial water filling, inches above bels botew.
bktbad used to aaiscain at least 12 iaehes of water
de*th Is .lobo for at lust- ,
hours
Percolation toot readings as" by ' � �'/1 • • �'
k- r' starting at `' s
ata
dvr:eg toot. Y toches.
/.
Muir Mtn sop" above Ml,
Irtr use" tam 0 aCi t�NM OW ba.
M 33
FWMATION ng? AA?A fa�'i
Test bole location_ ,: ;.,. We s:ior
Date test bole was prepared fsptb of bola lotus,-/'ZseMs.
Diameter of bole$ �_ inches.
Sell date -from test bole:
Daptbo i&ches
;? r
!ou tastw&
el #row e.flA'
Method of scratching sidevall —SC -?-J# %h fid
Depth of pea-sized gravel in bottom of hole, 2 inches.
Date and hcur of initial water filling ./D _-2.S^-�5 , ,^+` Aft
Depth of initial water filling, L inches above bole bottom.
Mcthod used to maintain at least 12 inches of water depth is bola for st hast
.. -. -
i hour
Percolation test readings side by k "X /;Z/" C 1_4 as
/ 0 '1 L T'S starting at JLO 'w: . Maxisum voter deptb &bow bolo lotus
(date)
during test, .s inches.
hrae3421M seta 0 4(k oust" PW Wo.
PIXCOIAT1OM 1'EET JS =
Test hole locatloa A"_r/ c ICA 14 We sudor
Date test bole was prepared /O —2.f'' ��:_, Dgtb of Bole bettem. fes•
Diameter of bole, �iaebes.
sell data from test boles
Depth, iaebaa
6 - /s
Nil testas
ZMAdAe
!l A�N�.,w.
.�.�J...�....;k
Method of scratchirtt sidewll _ .S'�/�%M%G ric
Death of pas -sited gravel is bottom of hole, = inches.
Date and hour of initial water fillingAOZ�
Depth of initial water filling, G inches above hole bottom. .`
wl
Method used to maintain at least 12 inches of water depth in bole ter at least
4 hours �� !� /.L •
Percolation test readings made by L//rV
0 starting at J �" . Masimus water depth above We boom.
(date
during test$ inches.
Pereelstiem sate • 141 afteN tW a*•
, Lo • of boil_ 1sor3gsGR M1�
rosettes or Project Aq& i
Sortsms made by 0 Date
Classification System: Malls : USDA -SCS �X; Unified _% other ^ —
Auper used (check. two): Hand or power i Tlight _, or lwket 4„1 other
Depth. Boring: Susher DRpth, 1Sorinp number
to to
Surface elevation toot t Surface elevation
n n
tick ted rK ~k of A194"
1 — /�n.N eu r c,�w• l —
Ik.40vaba► C04ur t
3 —
4—
s-
7 -
4T. 80*0w NO iO4A
clad of bona= at _ tat.
Staudt" water tables
Present at 'r. 0 lost of depth,
Z!1 _ been atter borlap.
Mat ►s+sesnt in both hole
Mottled soil ?
Observed at iz, g teat of depth.
on ►ressmt im berinr hole .
Obsvavatisms and eMweatss
2 --
3 --
�'ir.w. t►�iy' � IAik
4 —
S --
6 —
7 —
a --
- k 1 ,.�.
Sad of boriap at �. -- tat.
standings water tables •
present at. ,: r fast of depth,
21- tmra atter boring.
Not present in-bortas hole _.
rattled soil:
Observed at 2. 4F toot of depth.
not present to betiam hole -�
Obselvatl~ a" seesneetas
I
oil
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