HomeMy WebLinkAboutNORTON PARK #1 BLK 1 LT 4A
GREA,ER ANCHORAGE AREA BOR,.JGH
Department of Environmental Quality
3330 C Street
Anchorage, Alaska 99503
INSPECTION REPORT ON-SITE SEWAGE DISPOSAL SYSTEM
LOCATION
SEPTIC TANK:
DISTANCE
FROM WELL
INSIDE LENGTH
MANUFACTURER ,X~
INSIDE WIDTH
NUMBER OF
COMPARTMENTS
LIQUID DEPTH
LIQUID CAPACITM/obD0_ GALLONS.
TILE DRAIN FIELD:
DISTANCE FROM WELL
/L_~O~,~
FOUNDATION
NEAREST LOT LINE
TOTAL LENGTH
OF LINES
NUMBER OF LINES DISTANCE BETWEEN LINES TRENCH WIDTH IN. TOTAL EFFECTIVE
DEPTH OF FILTER
DEPTIt: TOP OF TILE TO FINISN GRADE MATERIAL BENEATH TILE IN. ABOVE TILE IN.
WELL:
TYPE CONSTRUCTION DEPTH
BUILDING NEAREST NEAREST SEPTIC SEEPAGE
FOUNDATION_____ LOT LINE , SEWER LINE TANK____ SYSTEM
CESSPOOL OTNER SOURCES _.
APPROVED DISAPPROVED REMARKS
DISTANCE FROM:
DISTANCES:
INSTALLED BY:
SEWER LINE DEPTH:
PIPE MATERIAL:
LOT SLOPE:
REMARKS:
DIAGRAM OF SYSTEM
G.A.A.B.
Form EQ-032
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ANCHORAC~E, ALASKA -99503
4040 "B" STREET,
9o7-2 % 58
~.0. ~ 12f65
Mr. Ernest Wilkes
SRA Box 186 K
Anchorage, Alaska 99502
Subject: Subsurface Investigation - Lot 4, Blk 1
Norton Park Addition No. 1
Dear Mr. Wilkes:
Transmitted herein in accordance with your instructions are
the results of the above refez.enced investigation as performed
by us on April 28 and 29, ].976. The scope of this project
is intestigation for suitability of an on-site sewerage system.
Included in this transmittal are:
Vicinity
Test Hole Location Sketch
Test Hole Log
Explanatory' Information
Figure !
Figure 2
Table A
Sheets 1-3
The exploration was conducted using a track mounted Mobile
Drill model B-50 drill rig with a continuous flight solid
stem auger. The rig is owned and operated by Denali Drilling,
Inc. DrJ. lling was supervised, the test holes logged and percol-
a{ion test run by Mr. Terry Barber, Geologist with Alaska Testlab.
The test hole was placed at the approximate location shown
on the Figure 2. The log of this test hole is included as
Table A of this report. In interpreting the log it would
be helpful to utilize the explanatory information contained
J.n Sheets I to 3 of this report.
When drilling was completed a 3/4" slotted PVC pipe was inserted
in the hole to aid in determining the free water level. For
the percolation test, the test hole was filled with water
and left overniqht to saturate. On returning the next day
the hole was refilled with water and the drop in the water
level carefully monitored over the next 60 minutes.
This procedure is not a standardized percolation test, however,
we understand that the Anchorage Department of Environmental
Quality prefers tests' performed in this manner to evaluate
a site for a proposed on--site sewezage system.
Mr. Earnest Wilkes
May 5, 1976
Page 2
Using the above test, the observed~ minimum percolation rate
was 6.7 min./inch. No water table was observed during drilling,
but it should be noted that the free water level normally
fluctuates seasonally and with precipitation.
We hope this report meets your presen~ needs. If we can be
of further service, please do not hesitate to contact us.
Yours very truly,
ALASKA TESTLAB
R. Mark Hansen
RMH:pks:mm
Attachments
Laboratory Supervisor
INTERNATIONAL
INTERNAIIONAL
AIRPORT
~,/1~ I lx~ I-T--V
~AA~
THI
PROJ E
I O .O ~? IV ',
~'Z 'oz
Date: 4/28/76
Logged by: T.E.
Test Hole #1
Table A
#17665
Depth in Feet
From To
Soil Description
0.0 6.0
6.0 12.0
12.0 15.0
15.0 16.0
F-4, Grave.l~y Sandy Silt, ML, brown, damp to wet,
stiff, NP.
F-l, slightly Sil_~_~ Sand~ Gravel, GM, brown,
rounded and subrounded particles to 1"
F-4, slightly San__q~ Silt, ML, brown
F-4, Sil___~t, ML, with gravel layering.
Bottom of Test Hole:
Frost Line:
F~ee Water Level:
16.0 ft.
1.0-2.0 ft.
None observed
1 5.0
2 10.0
3 15.0
Remarks: 1 .
2.
3.
4.
Type of Dry
Sa~le' ~gt~
Unified
-- G .... ML
-- G --- GM
-- G --- ML
Type of Sample, G=Grab, SP = Standard Penetration.
Unified Classification, see Sheet 2
Frost & Textural Classification, see Sheet 1
General Information, Sheet 3
Test Hole Log - Description Guide
The soil descriptions shown on the logs are tire best estimate of thc soil's
characteristics at the time of field examination and as such do not achieve the
precision of a laboratory testing procedure, If the log includes soils samples,
those samples receive an independent textural classification in the laboratory
to verify the field examination.
The logs often include the following items:
Depth Interval - usually shown t9 0,1 foot, within that zone no
significant change ltl soil type was observed through drill action, direct
observation or sampling.
Frost Classification NFS, Fl, F2, F3, F4, see "Soil Classification
Chart"
Texture of Soil - An engineering classification of the soils by particle
size and proportion, see "Soil Classification Chart", note the
proportions are approximate and modifications to the soil group due to
stratification, inclusions and changes in properties are included.
Moisture Content this i.s a qualitative measure: d~, no or little apparent surface moisture,
'damp, moisture forms portion of color, less than plastic Ii/nit,
wet, no free water, often soft, if cohesive soil,
saturated, free water may be squeezed out, if a free draining soil:
dilatcnt at natlll';JJ moisture COl/tent. if ,1 non-plastic silt or fine
sand. (The moisture content is further delinedby reference to PI,
LW, NP, M% or dilatency.)
Density - refers to more-or-less non-cohesive soils, such as sand gravel
mixtures with or without a fine fraction, derived from drilling action
and/or sample data; usually described as: very loose, loose, medium
dense, very dense. General intent is to portrty earthwork
characteristics.
Stiffness - refers to more-ordess cohesive soils and fine grained silts of
~ clay-silt groups. Derived from drill action and/or sample data. Very
soft, soft, stiff, very stiff and hard are commonly used terms.
Particle size - The largest particle recovered by the split spoon is
'1-3/8", Shelby tube Y', auger flights (minute-man) 2", Auger flights
(13-50 hollow stem) 6" 8". Larger particles are descxibed indtrectly by
action of the drilling and are referred to as cobbles, 3" to 8", or
boulders 8"t. Therefore when reviewing tbe gradation sheets, if any,
tire description on the hole log must be considered for an indication of
larger particles.
Unified Soil Classification - This is a two letter code. See Unified
Classification sheet for fuxther definition. In some cases AAS}tO and/or
FAA soil classifications may be shown as well as the unificd.
Atterberg Limits - useful for fine grained and of/mr plastic soils.
P~l; natural moisture content believed to be less than plastic lindt
PI+; natural moisture content believed to be between plastic and liquid
l-~mit s
L~w+l natural moistu£e content believed to be greater than liquid limit
NP; non-plastic, useful as a modifying description'of some silty
n-~terials,
Dilatency - is thc ability of water to migrate to the surface of a
saturated or nearly saturated soil sample when vibrated or jolted - used
its att ailt. to determine il' a fine grained soil is it slightly or nou-plastic
silt or a volcanic ash,
Rock flour - finely grouud soil that is not plastic but otberwise appears
similar to a clayey silt..
Organic Content -- usually described as Peat, PT, sometimes includes
discrete particles such as wood, coal, etc. as a modifier to an inorganic
soil. Quantity described as; trace, or an estimate of volume, or, in case
of all organic, - as Peat. This may include tundra, muskeg and bog
material.
Muck - a modifier used to describe very soft, semi-organic deposits
u~'][ly occuring below a peat deposit.
Amorphus peat organic particles nearly or fully disintegrated,
Fibrous Peat organic particles more-or-less intact.
Bottom of'Testhole includes last sample interval.
Frost Line - seasonal frost depth as described by drilling action and]or
samples at the time of drilling.
Frozen Ground - other than frost line, described by samples, usually
inchldes description oF icc content, often will include modified Untried
Classification for fi'ozen soils - this is a special case related to
per mafrost studies.
Frcc Water Level - The free water level noted duringdril[ing. This is
~mt necessarily the static water table itt thc tinlc of drilling or at otber
seasons. Static water table determination it/ ethel [hiln very permeable
soils requilcs obserwltion wells or piezonleter installations, used only ill
special cases.
Pdow/6" The number of blows ora 1,I0 weight free falling 30" to
advauce a 2" split spoon 6"; the number of blows for a 12" advance is,
by definition, the standard penetration.
M% natural moisture content of the soil sample, usually not
performed on clean sands or gravels below the water table.
· 7'ype of Sample -
S.~.P, refers to 2" split spoon driven into the soil by 140 pound
weight, a disturbed sample,
S, thin wall tube, "shelby" used to obtain undisturbed samples
of fine grained soil,
(3, "grab" disturbed sample from auger flights or wall of trench,
.C_, cut sample, undisturbed santplc from wall of trench.
--Dr}, Strength - a useful indicator of a soil's clayey fraci, ion, N=None,
t,=Low, M=Medium. H-High
Group The samples are placed into apparently similar gronps hosed
on color and texture and arc arbitrarily assigned il gloup letter. Further
disturbed tests including Attcrberg Liulits, grain size, moistmc-dcnsity
relationship, etc. may be pcrforlued OI1 thc group lind arc ;igSl. uned to
reflect the general distrubed characteristics of the soils assigned to thc
group. This is an inlpottant phase of the soil an,dysis and is nsed to
niHllbei' of qnantitative tests necessary to desct'ibc the soil n/ass.
SOIL CLASSIFICATION CHART
30%
GRAVEL
/..
~ CLAY
~" CLAYEY CLAYEY
';',~ CLAYEY CLAYEY ~"
/
OR
SILTY SILTY
SILTY ~ SILTY
SAND GRAVEL
GRAVELLY SAND
SANDY GRAVEL
SAND GRAVELLY SAND SANDY GRAVEL GRAVEL
\ \
0 1 0 20 30 40 50 60 70 80 90 1 00
GRAVEL (+#4 SCREEN) % BY WEIGHT
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F1 GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER TITAN 0.02 mm.
F3 a. GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0,02 mm. AND SANDY SOILS
(EXCEPT FINE SILTY, SANDS) CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
b. CLAYS WITH PLASTICITY IND, EXES OF MORE TI-tAN 12. EXCEPT VARVED CLAYS.
F4 a. ALL SILTS INCLUDING SANDY SILTS.
b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
c, LEAN CLAYS WITlt PLASTICITY INDEXES OF LESS THAN 12.
d. VARVED CLAYS.
~ iiiiiiiiiiill]t I
I Jill
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APPLIC' NT FILLS OUT UPPER FIAL~ ONLY
Lending Institution /~. '~"[ /~//3..~T , 0 N..,b~. / C/~ b~ Zip Code
Realty Co. & Agent (~ ,~
Address
Leos, Desor,p,,on L
Street 'ocati~ I ~2, \
Type of Residence '~ Single Family
[] Multiple Family
[] Other
Water Supply ~L~ Individual
[~ Community
[~ Public Utility
Sewer Disposal ~] Individual
[] Public Utility
[] Holding Tank
No. of Bedroorrm ~
Phone
Zip Code
Zip Code
Phone
Phone
ATTACH WELL LOG. A well log is required for all wells drilled since June 1975.
For wells drilled prior to that date, give well depth (attach log if available).
Year Individual Inslalled:
When Connecled to Public Utility:
NOTE: THE INSPECTION FEE MUST ACCOMPANY EACH REQUEST BEFORE PROCESSING CAN BE INITIATED.
Time ¢¢~'~'O ~,/,~¢/,Z 'rime Time Time
Date ¢' --, - Date Date
Inspirer Inspirer Insp~tor [nsp~tor
( ~APPROVED BEDROOM8 ~ *CONDITION8 OF APPROVAL ~
( ) OONDITIONAL APPRpVAL'
Soils Rating Date ~wer Installed Well To Absorption Area Well Log Received
I
f ) "'- z ~,4~ Well to Tank Septic T~k Size
.6uiinPoqms
suoTqo~Tp ~qpznomw .pu!~ oq ~oqomdsu!
~q ~o~ Xs~ q! ~ III~ q~qq s~pu~I
~aqqo ~o ~snoq ~o ~noloo qnd oq ~ns ~q
:oqoN
ALASKA DUIROFIITI FITAL COIqTROL $ RUIC $, IFIL
~nqin¢¢r'inq $ ~nuironmentol $1udlcs
8/3/82
MUNICIPALITY OF ANCHORAGE
ENVI, ~t ! ~,.: .O E ;
RECEIVED
CAL HOTCHKISS
2601 BLUEBERRY RD
ANCHORAGE AK 99503
SELLER - CANDICE WILLIAMS
SUBDIVISION-NORTON PARK #1
BUYER-JOHN FRENCH
BLOCK-1 LOT-4
ADEQUACY TEST FOR SEWER SYSTEM
THE TYPE OF ABSORPTION SYSTEM IS A TRENCH WITH AN AREA OF 496 SQFT.
THE SYSTEM IS CAPABLE OF ACCEPTING 450 GALLONS OF WATER PER DAY.
THE SURGE CAPACITY OF THE SYSTEM IS 700 GALLONS.
BASED UPON THE TEST DATA THE SYSTEM IS ACCEPTABLE FOR A
3 BEDROOM HOME.
THE SEPTIC TANK WAS PUMPED ON 8/81 .
SEPTIC TANK ADEQUACY
THE EXISTING SEPTIC TANK VOLUME OF
THIS 3 BEDROOM HOUSE.
1000 IS ADEQUATE FOR
1220 LUest 251h Aucnu¢ o Anchorc~Cle, Aloske 99503 e [907) 276-1361