HomeMy WebLinkAboutSOUTHPARK Blocks 1-5 S-5077
DEPARTMENT OF HEALTH AND ENVIRONMENTAl. PROTECTION
PLATTING OR PLANNING AND ZONING CASE REVIEW
CASE NUMBE~
PETITION FOR REZONING
SPECIAL EXCEPTION
,:,ATE RECE,VED--~C"~"'!V"'S~"- 7
COMMENT TO PLANNING BY$,,e..~
FOR MEETING OF
COMMENTS:
of Cases
ENVIRONMENTAL SANITATION:
PUBLIC WATEB"I~cF AVAILABLE
PUBLIC SEWER NOT AVAIl. ABLE TO SERVICE pET..&TION AREA,
' (~ ~
ENVIRONMENTAL ENGINEERING:
71-014 (9/76)
Mr. David A. Gren:Ler
Tryck, Nyman and ltayes
336 Donali Slfeot
MacKay Bldg,, Room 1206
Anchorage, Alaska 99501
(907) 274.5527
P,O, Box 1207
Soldolna, Alaska 99669
(907) 262.52.10
P.O. Box 1064
Wasilla. Alaska 99687
(907) 376.5038
740 I Street ..........
~chorage, Alaska 99501 ~"~7'K '*~l'
Subject: Infiltration G~llery on Little Rabbit Creek .... g
Dear
OrenLe~:
~ am ~n8 ~a ~esponse ~o you~ Ap~Z ~4~ ~980 ~e~te~ which ~eques~ed
cenceptua~ app~ova~ fo~ an ~nf~t~at~on ~a~e~y to be ZoeaCed nea~
Rabb~t Creek to serve a proposed subd~a~on. A f~eZd ~spaet~o~ o~
creek Zn ~be v~c~nZ~y of Bay V~e~ D~ve and a tev~e~ of the L~m~ad chemical
and bac~erJolo~ca~ analyses of ~he creek wate~ subm~ed by you~ Ap~L ~4~ ~980
Ze~er ~nd~ca~es tha~ ~he proposa~ could be aecep~abl.e to th~$ department.
Any f~na~ approvals ~Li~ be made on ~he baals of engineered p~ana and spec~-
fiea~ona as no~ma].~y aubm~l:ed ~o ~h~a a~eney fo~ re~ie~ and approvaL.
Th~s proposed syste~ ~ be a cZass A surface supply as de~ned under
~8 ~C 80. Subskant~aZ a~d con~noua mo~tor~n~'~a requited under this re-
8u~ation due to ~he nature of a s~faca supply. Th~s w~ZZ be doubly ~mportan~
due te khe ~aek of p~o~ee~on ~ the
~n the future ~ ~1 become necessary ~ my open,on to p~ov~de comp~eke
~rea~ment of the ~a~e~ and e~e~tua~y p~ace the aubd~v~s~o~ on some ~o~m
public wa~er syppZy which u~zes a mo~e p~otee~ed source. Th~s ~Z be
due ~o ~he deveZopmen~ ~ha~ ~akes p~aee J.n Lhe future. 2okent~a~ 1. o~
should be advised o~ tb~s possibility.
Zf ~ ~s dec~ded ~o proceed ~th ~h~a projec~ p~ease furnish us ~th a bacter-
~oLoS[ca~ analyses every ~wo ~eeks to buZ~d up a da~a base to judge ~he
des~8~. Also several o~L and 8tease de~e~m~nat'lous ~ou~d aZso be heZpfu~ .
especially after significant r:i,fall.' "
Sincerely, L/ /
~/ Resional Eavironmental SDJ~isor~ ./~[lkt]~(~W
4040"B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
BC & E/J&S
c/o John Berggren, Bounty Development
Si~ Box 4'?0~-B
Anchorage, Alaska 9950'1
September 17, 1979
W,O. t!A18753
Grid ~3236
Subject: Addendum No. 2 to Subsurface Investigation
40 Acre Parcel on Old Seward Highway
Gentlemen:
On Septex~er 12, 1979 Jordan Jacobsen, geotechnical engineer,
conducted an on-site wsstewater disposal system evaluation of
spec]_z.kc test plts of '[:he property as designated by~Joh~:.~ .>.~v.Ps~L[g~g-r~en
of Bounty Development. The test pits selected were 2/2~<6~.'7,/
1.4, 15, and 22. (See Figure 2.)
To evaluate the percolation rates of the soils in the test pit
areas we planned on flooding 'the pits with water on September 12
and then conducting a perco.].ation test the fo].lowing day. However,
upon examining 'the test pits it was discovered riley had sloughed
in with a couple of feet of soil. The sloughed soil wa..=. J.dent'ical
to the soil underlying it as confirmed, by the test pit logs.
(See original soils report on this area.) Flooding of the test
pits was still undertaken. Observation of the test pits' so~.l
while being ~lcoded with water (up to i00 gallons) indicates that
'~:he percolation ra~.e$ of the soils tested was between one and
f~ve ~s-~ per ~ :~.n every no.~.e. These fast percolation
rates negated the ]teed to conduct 'the standard test the fcllowing
day.
Based upon the observatJ, on off the test pits that were exantined
the estimated percolation rates are representative values of
the percolation properties J.r~ the test pit areas.
The figure in Addendtnl] No. I, denoting percolation rates of
specific areas, is substantiated by the observations made in this
investigation. It should s~ill be used as a criteria for estimated
percolation rates in specific areas of .this acreage.
BC & E/J&B
September 17, 1979
Page Two
We trust the above meets your present requirements. If we can be
of further assistance in this matter, do not hesitate to contact
Very sincerely~
ALASKA TESTLAB
Jordan E. Jacobse~
Geotechnical Engineer
Approved by:
JEJ/ms
ames R. Finle~ .~. ,
Geotechnical Engineer
t'.3d
..®
/@
®
./
/
/
.. . ~ .OBSERVED
TEST IIOLE'LOCATIONS EXCAVATED ON A
40 ACRE TRACT for BC&E/J&B
PERCOLATION TESTpITS.
FIGURE 2
g
8
~ 8
/'~"~ '~ /:~ - 'ih\,
x~/ %>k' W.O. #A18753
c/o John Berggren
S~ Box 470-B
~507
Anchorage, AK ~
.
Subject. Subsurface Znvestigation
on
Transmihted h~e~'~a~e the~results of the subject investiga-
tion. Included with this transmittal are the following:
Vicinity Map Figure 1
Test Bole Location Sketch Figure 2
Map of Generalized Soil Types Figure 3
Test Bole Logs Table A
Standard Explanatory Information Sheets 1-3
Grain Size Distribution Curv~ ~heets 4-'611 ~ ..J..~l I
Based on the percolation tests, we believe soil groups
A, B, and C will be suitable for on-site wastewater
disposal systems.
Sites where Group D is predominant should be carefully
evaluated on an individual basis for app[Licability of
individual wastewater treatment systems.
Groups A, B, and C are generally suitable as borrow
material where specifications require-the use of non-
frost susceptible fill.
The investigation consisted of 34 test pits, 'three augered
test holes, and three percolation tests. The first 18 test
'pits were excavated using a backhoe and logged by the client.
Visual soil classifications of the first 18 test hole logs
were later verified by Mr. James D. Mack of Alaska Testlab.
Test holes ~19 to #34 were excavated with a backhoe and
logged by James D. Mack. Test holes ~35 through #37 were
drilled using a Nod%~ell mounted Mobile Drill B-50 rig equipped
with a solid flight auger.
BC&E/J&B
January 23,
Page 2
1979
For evaluation of the soils encountered, samples of soil
from the various test holes were visually classified in the
field, then sealed in plastic bags to protect the natural
moisture content. In the laboratory, 'the natural moisture
content and dry strength of each sample was de'te~nined.
Samples of similar color,-texture and particle size distribu-
tion were then grouped together and given an arbitrary group
designation. Grain size analysis was then performed on
composite samples on important groups rather than on individual
samples.
~roup A
is a brown Grave].. This group is non-frost sus-
ceptible, rated NFS. Unified classification is
GP.
~rgup ~
is a brown slightly ~ilt~ Gravellj[ Sand. This
group is non-frost susceptible, rated NFS. However,
the composite sample borders on marginally frost
susceptible F.-2 gradation. Unified classification
is SP-SM. Grain size distribution is shown on
Sheet 4.
~rou~.~
is a brown Sandy ~ravel. This group is non-.frost
susceptible, NFS, to marginally frost susceptible,
F-1. Unified classification is GW. In the field,
Group C is expected to be primarily non-frost
susceptible. The laboratory sample contained
particles only up to 2" in size while in the
field, Group C soils typically contained particles
up through cobbles size. Grain size distribution
is shown on Sheet 5.
Group D
is a grey Grave!l_)Iy ~ndy Silt. This group is
highly frost susceptible, rated F-4. Unified
classification is b~. Grain size distribution
shown on Sheet 6.
is
The grain size distribution curves do not reflect stratifica-
tion which causes the soils to be more or ].ess sorted in the
field. As mentioned above, samples typically omit the
larger particle sizes, thus, particular attention should be
paid to the test hole logs where cobbles or boulders are
mentioned.
For a preliminary evaluation of the site for suitability of
on-site sewage treatment systems, test holes ~135 through ~37
were drilled with a solid flight auger rather than excavated
with a backhoe. Upon completion of drilling, a 3/4" slotted
PVC pipe was inserted in the hole to aid in measuring the
free water level. The holes were selected in locations
representative of the various soil types encountered[ on the
project. The hole was then filled with water and left
Bc&E/J&B
January 23,
Page 3
1979
overnight to saturated. Upon returning the next day, the
hole was refilled with water and the drop in water level
carefully monitored over the next 60 minutes. Using the
above procedure, the following minimum percolation rates
were observed.
Test tlole #
Percolation Rate
35
36
37
3 minutes/inch
8 minutes/inch
27 minutes/inch
We trust tile above meets your present requirements. If you
have any questions or if we ]nay be of further assistance,
please do not hesitate to contact us.
Very sincerely,
ALASKA TESTLAB
R. Mark Hansen
RMH:rb
Enclosures
APPROVED
Melvin. R. Nichols, P.E.
Laboratory Manager
,.~ .=, . I~r' ~ ' Head Office '740 I Street Aritho*age, Ah~ska 99501 .'907 279 0543 'Cable TNt4ANCAK,/To{ex 090 25332
FIYEI<
NYMAN
8i71.0
February 13, 1979
Department of Health & Environmental
Municipality of Anchorage
825 L Street
Anchorage, Alaska 99501
Protection
Attention
Mr, John W, Lynn
Subject:
Dear John
Additional Informatioa Regarding · ~. '-.,
8ounty Terrace Subdivision Case No.[ 5077
Attached please find a preliminary plat of Bounty Terrace which
shows topographic information along with proposed well site locations.
Also attached is a copy of the sub-surface soil investigation reports
dated January 23, 1979 and Addendum No. I dated January 26.
A community well is proposed for this site along with on-site
individual sewer systems. The actual location of the well will depend
upon where a successful drillin9 attempt is made. VChen the well drillin9
is completed, its location will be verified in the field by surve¥eB~thods
and shown on the plat. The lot configuration will then be fina~!ized so
that buildin9 sites and septic systems will be outside the re'~uired 200'
radius. In layin9 out the final plat design all applicable 9uidelines
of the Municipal Health and Environmental Protection A9ency regardin9
on-'site septic systems and their relation to lot size and soil type will
be followed, We will resubmit the plat to your department which will
shown the actual location of the welt and final lot layout for your approval,
If you have any questions or desire additional
time please contact this office.
Very truly yours, '~[/'
informat i on'at th i s
cc: John Berggren
,~ii:i!i?~ A NCH O RAG E, A LAS KA 99503
~~ (907) 278-1551
~anua~Z 23, 1979
W.O. ~A18753 .
Grid ~3236 - ' ' ~
~NV RONMEN~' -
FEB 7
~/0 John Berggren
~cbozage, AK 9950? ..
Subject: Subsurface Investigation
40-Acre Parcel on Old Seward Highway
Gentlemen:
Transmitted herein are the results of the subject investiga-
tion. Included with this transmittal are the following:
vicinity Map Figure 1
Test Hole Location Sketch Figure 2
Map of Generalized Soil Types Figure 3
Test Hole Logs Table A
Standard Explanatory Info~ation Sheets 1-3
Grain Size Distribution Curves Sheets 4-6
CONCLUSIONS
1. Based on the percolation tests, we believe soil groups
A, B, and C will be suitable for on-site wastewater
disposal systems.
2. Sites where Group D. is predominant should be careful].y
evaluated on an individual basis for applicability of
individual wastewater treatment systems.
3. Groups A, B, and C are generally suitable as borrow
material where specifications require the use of non-
fros~ susceptible fill.
The investigation consisted of 34 %est pits, three augered
test holes, and three percolation tests. The first 18 test
pits were excavated using a backhoe and logged by the client.
Visual soil classifica~ons of %he first 18 test hole logs
were later verified by Mr. James D. Mack of Alaska Testlab.
Test holes ~19 to ~34 were excavated with a backhoe and
logged by James D. Mack. Test holes ~35 through ~37 were
drilled using a ~;odwell mounted Mobile Drill B-50 rig equipped
with a solid flight auger.
BC&E/J&B
January 23,
Page 2
1979
For evaluation of the soils encountered, samples of soil
from the various test holes were visually classified in the
field, then sealed in plastic bags to protect the natural
moisture content. In the laboratory, the natural moisture
content and dry strength of each sample was determined.
Samples of similar color, texture and particle size distribu-
tion were then grouped ~together and given an arbitrary group
designation. Grain size analysis was then performed on
composite samples on ~portant groups rather than on individual
samples.
Group A
is a brown Gravel. This group is non-frost sus-
ceptible, rated NFS. Unified classification is
GP.
Group B
is a brown slightly S__ilt~ Gravellz Sand. This
group is non-frost susceptible, rated NFS. However,
the composite sample borders on marginally frost
susceptible F-2 gradation. Unified classification
is SP-SM. Grain size distribution is shown on
Sheet 4.
Group C
is a brown San~ ~ravel. This group is non-frost
susceptible, NFS, to marginally frost susceptible,
F'l. Unified classification is GW. In the field,
Group C is expected to be primarily non-frost
susceptible. The laboratory sample contained
particles only up to 2" in size while in the
field, Group C soils typically contained particles
up through cobbles size. Grain size distribution
is shown on Sheet 5.
Group D
is a grey Gravellff_ ~gndy Silt. This group is
highly frost susceptible, rated F-4. Unified
classification is ML. Grain size distribution
shown on Sheet' 6.
is
The grain size distribution curves do not reflect stratifica-
tion which causes the soils to be more or less sorted in the
field. As mentioned above, samples typically omit the
larger particle sizes, thus, particular attention should be
paid to the test hole logs where cobbles or boulders are
mentioned.
For a preliminary evaluation of the site for suitability of
on-site sewage 'treatment systems, test holes #35 through ~37
were drilled with a solid flight auger rather than excavated
with a backhoe. Upon completion of drilling, a 3/4" slotted
PVC pipe was inserted in the hole to aid in measuring the
free water level. The holes were selected in locations
representative of the various soil types encountered on the
project. The hole was then filled with water and left
Bc&E/J&B
Jan6ary 23,
Page 3
1979
overnight to saturated. Upon returning the next day, the
hole was refilled with water and the drop in water level
carefully monitored over the next 60 minutes. Using the
above procedure, the following minimum percolation rates
were observed.
Test Hole #
Percolation Rate
35
36
37
3 minutes/inch
8 minutes/inch
27 minutes/inch
We trust the above meets your present requirements. If you
have any questions or if we may be of further assistance,
please do not hesitate to contact us.
Very sincerely,
ALASKA TESTiJ~B
R. Mark Hansen
RMH:rb
Enclosures
APPROVED
Melvin R. Nichols~ P.E.
Laboratory Manager
"T~I 5
34
\/
® /
I~ /
/lk\ ®
\ \
\
\
TEST HOLE L0~AxION~ EXCAVATED ON A
40 ACRE TRACT for BC&E/J&B
FIGURE 2
1
MAP IDENTIDYIN~ A=-RO-~I~.A5 BOUNDARIES OF SOIL
TYPES FOUND ON A 40 ,ACIIE TRACT ~'OR BC&E/J&B
Descrij?tion of Map. Units
1 Well-drained gravels and sands
2 Slower draining gravelly sandy silts
3 Wetter areas consisting of valleys and sloughs
FIGURE 3
Test Hole #1
D_~pth in Feet
From To
0.0' - 1.5'
1.5' - 3.5'
3.5' - 6.5'
6.5' - 8.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Clienh
Date: 10-28-78
Soil Description
Organic Topsoil.
Silty Sandy Gravel, moist, GM - F-l.
~ilty Gravelly'Sand, moist, SM~- F-2,
occasional cobbles.
Sandy Gravelly Silt, SM/ML~ F-4, damp.
8.0I
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #2
D_~j~th in Feet
From To
0.0' 0.5'
0.5' 6.0'
6.0' 8.0'
8o0' 12.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28~-78
Soil Description
Organic Topsoil2
Coarse Sandy Gravels, GP -NFS, damp.
Coarse Sand with thin Silt layers,-~SP/SM:-
NFS/F-2, damp.
Coarse Sand with layers of pea gravel, SP,'%~
NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole ~3
~De~th in Feet
From
0o0' 8.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
~ea[, wet.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
8.0f
None Observed
N6ne Observed
Hole filled{ with water and snow when
observed by Alaska Testlab.
Test Hole #4
Depth in Feet
From To
0.0' - 1.0'
1.0' - 3.0'
3.0' - 8.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Silt~ Sandy Gravel, GM - F-l, damp.
Fine Gravelly Silt~ Sands, SM-- F-2/F-3,
damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
8.07
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole
D~th in Feet
From To
0.0 - 0.5
0.5 .- 2.5
2.5 - 8.0
8.0 .- 12.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Client
Date: 10--28--78
Soil Description
Organic Mat.
Silty ~nd~ Gravel with slight organic
content F-~ - GM, damp.
pilt~ Sandy Gravels, GM~- F-l, damp.
Coarse 9ravelly Sands, SP[.- NFS, damp.
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #6
D__e~th in Feet
From To
0,0' - 1.0'
1.0' -- 2.0'
2.0' - 12.0'
Table A
WO ITA18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Organic Silty Sandy Gravel, GMs.- F-l, damp.
~andy Gravels, GP, NFS, damp, 60% plus #4
aggregate, cobbles to 8 inches.
Bottom of Test Hole:
Fros% Line:
Free Water Level:
Remarks:
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole ~7
D__qepth in Feet
From To
0.0' - 1.0'
1.0' -- 12.0'
~ottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Client
Date.: 10-28-78
Soil Description
Organic Topsoil.
Sandy Gravels, GP.;~ NFS, damp,
~r~-f~nch-~s7 ~'-70% plus #4 agg.
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
cobbles to
Test Hole #8
Depth in Feet
From To
0.0' - 2.0'
2.0' - 4.0'
o0' - 7~0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Client
Date~ 10-28-78
Soil Description
Organic Topsoil
Silt, ML, wet.
Coarse Gravels,
GP ;1' NFS.
7.0'
None Observed
Test Hole Logged By Client
Bole full of snow when observed
Alaska Testlab
by
Test Hole #9
Depth in Feet
From To
0.0' 1.5'
1.5' 2.5'
2.5' 10.0'
Table A
W0 #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Coarse Sandy Gravels, GP~NFS,
Silty Gravelly Sands., SM,~F-2,
damp.
d amp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
10.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #10
D_~th in Feet
From To
0.0' 0.5'
0.5' 1.5'
1~5' 3.0'
'3.0' 12.0'
Table A
WO #A18753
· Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Si~t~ Sandy Gravel, ~, F-l, damp.
Gravejj_~ Sands, SP~I~NFS, damp.
Layered Sandy Gravels and Gravelly Sands,
GP/SP~I.-NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified bY Alaska Testlab
~est Hole #11
Depth in Feet
From To
0.0' - 3.5'
3.5' - 6.0'
Table A
WO #A18753
'Logged By: Client
Date: 10-28-78
Soil Description
Peat with boulders.
~and~ Gravels with cobbles, GM~- F-l,
to 5 feet then saturated at 6 feet.
d~np
Bottom of Test Hole: ~.0'
Frost Line: None Observed
'<'Free '
Water Level: 6.0' [~
Remarks: Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #12
D~pth in Feet
From To
0.0' - 1.0'
1.0' 5.0'
5.0' 5.5'
5.5' 14.0'
Table A
WO #A18753
Logged By: Client
Date~ 10-28-78
'Soil Description
Orc~anic Topsoil.
Layered coarse Gravels and Gravelly Sands,
GP/SP, damp.
Silt, SM, damp.
Coarse Sandy Gravels, GP,.{~NFS, damp, with
cobbles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
14.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth
1 4.0'
2 8.0'
Type of Dry
M% Sample Strength Group Unified
1.4 G None A GP
6.2 G None B SP/SM
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medimn, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #13
Depth in Feet
From To
0.0' - 0.5'
0.5' - 2.5'
2.5' - 8.0'
'8.0' - 10.0'
10.0' - 14.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28--78
Soil Description
Organic Topsoil.
Coarse Gravels, GP, NFS, damp.
Sa__nd~ Gravels, GP/GW~%'-NFS, damp.
~and, SP/SI4,rI-NFS, damp.
Sandy ~ravels with cobbles,
GP/GW;I.NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
14.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth M__%
1 9.0' 6.6
Type of Dry
Sample ~trength Group Unified
G None B SP/SM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, ti=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Texfural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #14
Depth in Feet
From To
0o0' - 0.5'
0.5' - 12.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78 &
1-9-79
~ Soil Description
Topsoil.
C~arse Sandy Gravels with cobbles to 8",
GW/GP/~-N-~,-damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
and Redug and Verified by Alaska Testlab
Sample pepth M__%
1 2.0'-12.0' 6.7
Type of Dry
Sample Strength Group Unified
G None C GW
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undis.turbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #15
D_sjo~th in Feet
From To
Do0' - 1.5'
1 .!5' - 3.0'
3.0' - 12.0'
Bottom of Test Hole:
Frost Line:
Fz'ee Water Level:
R~arks:
Table A
Soll Description
WO IIA18753
Logged By: Client
Date: 10-.28-78
Organic Topsoil.
Coarse Gravels, GP, NFS, damp.
Coarse Sandy Gravels with cobbles,
NFS, damp~
12.0'
None Observed
None Observe,d
Test Hole Logged By Client
Verified by Alaska Testlab
GP/GW,'~.
Sam~l__e Depth ~J~
1 10.0' 4.2
Type of Dry
Sample Strength Group Unified
G None C GW
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group ref.ers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #16
_D_epth in Feet
From TO
0.0' - 1.5'
1.5' - 8.0'
8.0' - 9.0'
9.0' - 12.0'
Table A
WO #A18753
Logged By: Client
Date: 10-.28-78
Soil Description
Organic Topsoil.
Sandy Grave]_, GP/GW, NFS, damp,
~gvelly. Sand, SP,'['NFS, damp.
Sandy Gravel, GP/GW~.NFS, damp,
with cobbles.
with cobbles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth
I 9.0'
Type of Dry
M__% Sample Strength ~r__oup Unified
2.8 G None C GW
R~]arks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #17
Depth in Feet
From To
0.0' -- 0.5'
0.5' - 5.5'
.5.5' - 10.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Topsoil.
Coarse Gravels with cobbles, up to 8 inches,
GP, NFS, damp.
Gravelly Sandy Silt, SM/ML;'~F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
10.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth
1 8.0' 11.0
Type of Dry
~ample Strength Group Unified
G None D PLL
Remarks:
2.
3.
4.
5.
6~
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medi~u,.H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole
Depth in Feet
From To
0.0' - 1.5'
1.5' - 6.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Gravell~ ~andy Silt, SM/ML;~'F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Rennarks:
6.0~
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #19
D~th in Feet
From To
0.0' - 1 .5'
1 .5' - 8.5'
8.5' - 13.0'
Table A
WO #A18753
Logged By: Client & ATL
Date: 10-28-78 & 1-9-79
Soil Description
Organic Topsoil.
Coarse Sandy Gravels, GP;{-NFS,
Gravelly Sand, SP/('NFS, damp.
damp.
Bottom of Test Hole:
Frost Line:
Free Waker Level:
Remarks:
13.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #20
Depth in Feet
From To
0.0' .- 1.0'
1.0' 12.0'
Table A
WO #A18753
Logged By: J.Do Mack
Date: 1-10-79
Soil Description
Topsoil.
~ravell~ Silt~ ~ands, SM/ML,~'F-2/F-4, damp,
cobbles to 12 inches.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
_Sample Depth M_~%_
1 6.0'- 8.0' 12.3
Type of Dry
~ample ~tren~t~ Group Unified
G None
R~arks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet '2.
Unified Classification, s~e Sheet 3.
Test Hole
_De_jo~th in Feet
From To
0.0' - 2.0'
2.0' - 8.0'
8.0' 12.0'
Table A
WO ~A18753
]bogged By: J.D. Mack
Date: 1-9-79
Soil Description
Topsoil.
Sandy Gravel with cobbles to 8 inches,
NFS/F-l, damp.
Gravelly Silt, ML~F-4i damp.
GW,
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
~amp].e _Depth M_~%
1 2.0'- 8.0' 5.4
2 8.0'-12.0' 12.2
Type of Dry
Sample Strength ~rou~ Unified
G None C GW
G Slight D ML
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Orab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group tel%rs to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #22
D_~th in Feet
From To
0.0' - I .0'
1.0' - 12.0'
Table A
WO I~A18753
Logged By: J.D.
Date: 1-9-79
Soil Description
Top~oil.
Layered Sandy Gravels (GW)>[-and Gravelly
Sands (S~ ~a~i~.-~'~ggregate si~7.
Mack
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Type Of Dry
Sample Depth M_~% S__agplq Strength Group Unified
I 2.0'-12.0' 4.0 G None C
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L~Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet 1.
5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification., see Sheet 3.
Test Hole #23
Depth in Feet
From To
0.0' - 1.5'
1.5' - 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Topsoil.
Gravelly Silt, ~-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Small water seepage at 4~ to 4.5' below
ground surface
Test Hole #23A
D__epth in Feet
From To
0.0' 2.0'
2.0' 8.0'
8.0' 10.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Topsoil.
Coarse Sandy Gravels,
Silt, ML~ ~F-4, damp.
GP;~-NFS, wet.
Bottom of Test Hole:
Frost Line:
Free Water Level:
ReMarks:
10.0'
None Observed
7.0'-8.0' only ~
Test Hole 23A, 80' uphill from
test hole ~23, water seepage at
Test Hole #24
Depth in Feet
From To
0.0' 1.5'
1 .5' 3.5'
3.5' 5.0'
5.0' 8.0'
Table A
WO IIA18753
Logged By: J.D. Mack
Date: 1-11-79
Soil Description
Organic Topsoil.
~andy Gravel, GP, NT'S, damp.
Gravelly ~ilty Sand, wet, SM, F-2.
Dense-dry Gravelly Sandy Silt, ML;~"F-4.
Bohtom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
_Sample Depth
I 7.0'
8.0~
None Observed
None Observed
Water seepage at -3.5' t./
Type of Dry
M% Sample ~trength Group Unified
G Slight D ML
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified, Classification, see Sheet 3.
Test Hole 25
D~th in Feet
From To
Table A
Soil Description
WO ~tA18753
Logged By: J.D. Mack
Date: 1-11-79
0.0' - 1.5' Organic Topsoil.
1~5' 2.5' Sand, SP, NFS, wet.
2.5' 10.0' Gravelly ~ Silt,
ML~-F-4,
damp, dense.
Bottom of Test Hole: 10.0'
Frost Line: None Obseryed
Free Water Level: ( .... 2.0' tO 2.~¢
Remarks: Water"seepage between 2.0'
and 2.5'
Test Hole #26
Depth in Feet
From To
0.0' '- 2o0'
2.0' - 10.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Organics mi_xed with cobbles.
Gravelly Sandy Silt, ML~'F-4,
~-~com-i~g- ~et at -8.0'
damp,
Bottom of Test Hole:
Frost Line:
Free Water Level:
10.0'
None Observed
None Observed
Sample pepth M__%
1 6.0'- 8.0' 11.7
Type of Dry
Sample ~trength G__roup Unified
G Slight D ML''~
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group re[ers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #28
D__qpth in Feet
From To
0.0' 1.5'
1.5' - 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
'Soil Description
Top~oil.
Coarse Sandy Gravels with boulders and cobbles
throughout depth, GW/GP, NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Sample Depth M%
I 5.0'-10.0' 4.8
T~pe of Dry
S~aple Strength Group Unified
G None C GW,['
Remarks:
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medi~n, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet .2.
Unified Classification, see Sheet 3.
Test Hole #29
Depth in Feet
From To
0.0' - 2.0'
2.0' - 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
]Date: 1-9-79
Soil Descr.%ption
Topsoil.
_Gravel_l_~ Sandy Silt, SM/Mn%~ F-4,
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Sample De,th M_~%
1 5.0'-10.0' 12.0
Type of Dry
Sample Strength Group Unified
G Slight D ML '~
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP := Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~30
_D_epth in Feet
From To
0,0' - 1.0'
1.0' - 10.0'
10.0' - 12.0'
Table A
W0 #A18753
Logged By~ J.D. Mack
])ate: 1-11-79
Soil Description
Tops~oil.
Coarse Sandy Gravels with cobbles and occasional
boulders, GP;/~ damp.
Gravelly Sands with occasional cobbles,
damp.
Bottom of Test Hole:
Frost Line:
Free Waqer Level:
12.0'
None Observed
None Qbserved
Ss~ple Depth
I 8.0'
Type of Dry
M_~% ~ample Strength Group Unified
5.5 G None C GW '\-
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Info,nation, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #31
D_~th in Feet
From To
0.0' - 2.0'
2.0' -- 4.0'
4.0' - 7.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-11.-79
Soil Description
Orggnic Topsoil.
~andy Gravels, GW, NFS, damp.
Dense, dry ~ravell¥ Silts, MLf'U-4.
B~ttom of Test Hole:
Frost Line:
Free Water Level:
7.0'
None Observed
None Observed
Test Ho]_e I~32
D~pth in Feet
From To
0.'0' - 2.0'
2.0' - 4.0'
4..0' - 8.0'
8.0' - 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-10-79
Soil Description
Organic Topsoil.
~andy Silts and ~ilt~ Sands, ML/SM,
damp.
Slightly ~ilty Sand,
cobbles.
Gravell~ Silty sands,
F-4/F-2,
SP/SM, NFS/F-2, occasional
SH/SM?-!.-2, moist to wet.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
~ample Depth
1 5.0'
3 10.0'
Type of Dry
M_~% _Sample Strength Group Unified
4.4 G None B SP/.~M ~[
9.2 G None B SP/SM /
Remarks: 1.
3.
4.
5.
6.
Type of Sqmple, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~33
pep.th in Feet
From To
0.0' 2.0'
2.0' 4.0'
4.0' 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Organic Topsoil]
Silty Sand, SM, F-2/F-4,
G~avell~ Sands, SPT/-NFS,
~bbles t~ ]~.
damp.
occasional
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Test Hole #34
Depth in Feet
From To
0.0 0.5'
0.5 - 12.0'
Table A
WO #A18753
'Logged By: J.D. Mack
Date: 1-10-79
Soil Description
To~soil.
Clean coarse Sand Gravels with clean Sand
layers, cobbles to-12", GP/GW~-~FS, d~rap.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
Nbne Observed
None Observed
Test Hole #36
D~th in Feet
From To
0.0' - 6"
6" - 20.0'
Table A
WO #A18753
Logged By: T,
Date: 1-16-79
Soll Description
Orgqnic Topsoil.
Gravelly Sand~ silt.
Barber
Bottom of Tes% Hole:
F~ost Line:
Free Water Level:
Remarks:
20.0'
None Observed
Nohe Observed
Percolation test hole in lower silt area.
Sample Depth.
1 2.5'
2 5.0'
3 10.0'
4 15.0'
5 20.0'
Type of Dry
~amp1q Strength Group Unified
G D ML
G D ML
G D ML
G D
G D ML
Re~]ar ks: I .
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General InformatiQn, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #37
Depth in Feet
From To
0.0' - 1.0'
1.0' - 20.0'
Table A
WO ~A18753
Logged By: %.
Date: 1-.17-79
Sctunidt
'Soil Description
Or~anlc Topsoil·
Gravelly Silty San~s/SandylSilts.
Bottom of Test Hole:
Frost Line:
Free Wa%er Level:
Remarks:
20.0'
None Observed
None Observed
Percolation test hole in upper silt area.
Sample
I 10.0'
2 15.0'
3 20.0'
Type of Dry
M__%. S_~am_mj~,.1e Strength Group Unified
G D SM/ML
G D SM/ML--
G D SM/Mn~.
Remarks: 1.
3.
5.
6.
Type of'Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medi%~, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Togt Hole Log - Doscription Guide
The logs often include the followblg items:
Depth lnterva,I - usually shoxvn to 0.1 foot, within that zone no
significant change in soil type ,vas observed through drill action, direct
ob~rvation or sanlpling.
Frost Classification - NFS, Fl, F2, F3, F4, see "Soil Classification
Texture of Soil - An engineering classification of the soils by particle
~ize and pro:mellon, se.e "Soil Classification Chart", note the
proportions are approximate and nmditications to tt~e soil group due to
stratification, inclusions and changes in properties are included.
_dr_)'_, no or little apparent surface moisture,
damp, moisture forms portion of color, less than plastic limit.
la~uratcd, free water may be squeezed out, ifa free drainblg sol',:
sand, (Thc moisture content is further defined by reference to Pl.
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 descrlbedas: very ioose, loose, medium
dense, very dense. General intent is to portray earthwork
characteristics.
Stiffness - refers to more-or-less cohesive soils and fine grained silts of
~ clay-sih groups. Derived from driHactlonand/or sample data. Very
soft, soft, stiff, very stiff and hard arc commonly used Ierms.
Particle size - The hrgest particle recovered by JJle split' spoon is
1-3/8", Sbelby tube Y', auger tgghts (minute-man) 2", Auger flights
(B-50 hollow stem) 6"-8". Larger particles are described indirectly by
action of Ihe drilling and arc referred to as cobbles, 3" to 8", or
boulders 8"+. Therefore when reviewing the gradation sheets, if any,
the 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
~ass~'~ficatlon sheet fbS-~u3~her definition, In some cases AASHO and/or
FAA soil classifications may be shown as well as the unifie~
PI+; natm'M moisture content believed to be between plastic and liquid
'~unit~
Lw+; natural moisture content believed to be greater than liquid hmit
NP; non-plastic, useful as a modifying description of some silty
~t~rials.
silt or a volcanic ash,
Rock flour -tinely ground soil that is not plastic but otherwise appears
s~nitar to a clayey silt.
Organic Content - usually described as Peat, PT, sometimes includes
discrete par~[~ el~ 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
usually occuring below a peat deposit.
Amorphus peat - organic particles nearly or fully disintegrated.
Fibrous Peat .- organic particles more.ordess intact.
Bottom ofTestboJe - includes last sample interval.
~rost Line - seasonal frost depth as described by drilling action aud'/or
samples at the tittle of drilling.
Frozen Ground - other than frost [in~, described by samples, usually
includes description of ice content, often will include modified Unified
Classification for frozen soils -- this is a special case related to
permafrost st ffdies.
Free Water Level - The free water level noted durmgdrilli'~g This is
special cases.
B{owl6' -- ]'lie number of blows of a 140 weigbt free falling 30" to
by definition, the standard penetration.
M% - natural moisture content of the soil sample, usually uot
T.T~e of Sample -
.~.~, refers to 2" split spoon driven blto the soil by 140 pound
weighl, a dislurbed sample,
~ thin wall tube, "Shelby" used to obtain undisturbed samples
of fine grained soil,
Dr}' S~rer~ - a useful indicator of a soiPs clayey fraction, N=None,
L=Low, M =Medium, H-"High
Gro.u~ - The samples are placed into apparently similar groups based
disturbed tests including Attcrberg Limits, grain size, moisture4ens,ty
SOIL CLASSIFICATION CHART
30% GRAVEL
OLAY
OR
SILTY
SAND
CLAYEY CLAYEY
CLAYEY CLAYEY
,SILTY SILTY
GRAVELLY SAND SANDY GRAVEL
0 10
GRAVELLY SAND
20 30 40 50
GRAVEl_ (-~-~4 SCREEN
}Y GRAVEL /
60 70 80
% BY WEIGHT
GRAVEL
90 100
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER TI-lAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F1 GRAVELLY SOILS CONTAINING BETWEEN 3AND 20% FINER TNAN 0.02 mm.
F2 SANDY SOILS CONTAINING BETWEEN 3AND 15% FINER THAN0.02 mm.
F3 a. GRAVELLY SOILS CONTAINING MORETILIAN 20% FINER THAN 0.02 mm. AND SANDY SOILS
(EXCEPT FINE SIL'FY, SANDS) CONTAINING MORE TI-lAN 15% FINER THAN 0.02 mm.
b. CLAYS WITH PLASTICITY INDEXES OF MORE THAN 12. EXCEPT VARVED CLAYS.
FA a. ALL SILTS INCLUDING SANDY SILTS.
b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
c. LEAN CLAYS WI-FH PLASTICllY INDEXES OI- LESS THAN ]2.
d. VARVED CLAYS.
o ~ ~ ~ ~o
g
.I
f~' ~I~,~,,. "~ ANCHORAGE ALASKA 99503
(907) 278-1551
ganuars/~,~ 1979
W. O. ~ A~}~53
Grid: 3236
BC & E/J&B
c/o John Berggren
SRA Box 47D-B
Anchorage, Ak 99507
Subject: Addendum No. 1 to Subsurface Investigation
40 Acre Parcel on Old Seward Highway
Gentlemen:
The test hole logs and the percolation test data have been
examined and 'the general information placed on Figure 4.
Based on the field observations, the .soil conditions ]nave
been classified in one of four categories. Recommendations
for development of on-site sewage treatment syste~ns Jn the
various areas are listed below.
Est.i/~tated percolation rate less than 5 min./inch
This area centains primarily NFS sandy gravel or gravelly
'sand or near NFS F-1 and F-2 slightly silty sandy
gravel and slightly silty gravel].y sand. This material
is relatively free draining. Ground water problems
were not observed in this area. A design value of ~25
square feet per bedroom should provide a conservative
basis for design of on-site sewage treatment systems
within this area.
Estimated percolation rate 5 to 15 m~n./inch
Soils in this area are geuerally gravelly silty sands
to gravelly sandy silts. However, the material is not
unusually dense and the percolation test perfor!ned on
test hole ~36 is believed to he representative of this
area. A maximum design value of 190 sq.ft./bedroom
should be acceptable in these areas, llt may be possible
to substantially reduce this design value and the
required size of soil absorption systems if a test hole
is placed on lots in this area and a percolation test
performed.
Estimated percolation rate more than 15 min./inch
Soils within this area are t,,pically a stiff to hard
gravelly sandy silt. The area also contains some peat.
Soils are generally quite tight, however, we believe a
Bc & E/J&B
c/o John Berggren
January 26, 1979
Page 2
location on each lot in the area can be found in which
the percolation rate is less than 60 minutes per inch
(the slowest usable rate by current municipal regulations).
A test hole should be placed before house construction
begins on each lot where a on-site waste-water disposal
system is contemplated in this type of soil. If the
initiaA test hole on the lot indicates poor permeability,
it may be advisable to probe several locations on the
lot to determine the best location for the system.
Rather large absorption trenches should be contemplated
throughout this area.
D. Wet Areas -
Surface or subsurface water could hamper the operation
of sewage treatment systems within this area. Development
of streets and utilities within the subdivision will
alter the drainage patterns and may cause an increased
portion of the land to become usable. Test boles
should be placed on each lot wlthin this area to deter-
mine whether or not sufficient clearance between an
absorption system and ground water can be achieved to
meet current regulations.
We trust the above meets your present requirements. If we
can be of further assistance on this matter, please do not
hesitate to contact us.
Very sincerely,
ALASKA T E S T LA B
R. Mark Hansen
Approved by:
Melvin R. Nichols, PE
Laboratory Manager
RMH: mm
At tacl~u]ent s
cc: Dave Grenier ~ Tryck Nl~uan & Hayes
34
,; FLo rt~
'!
® ®
/d~Sr-'~ '~ x / ®
\
/
TEST HOLE LO~A~ION~ EXCAVATED ON A
40 ACRE T~ICT for BC&E/J&B
FIGURE 2
MAP IDENTIFYING ...... · ....... BOUNDaRiES OF SOIl,
TYPES FOUND ON A 40 ACRE TRACT FOR BC&E/J&B
Description of Map Units
1
2
3
,Well-drained gravels and sands
Slower draining gravelly sandy silts
Wetter areas consisting of valleys and sloughs
FIGUt~ 3
ESTIMATED PERC. RATES
MINUTES/INCH
FIG. 4-
Test Hole #1
D__epth in Feet
From To
0.0' - 1 .5
1 .5' - 3.5
3.5' - 6.5
6.5' - 8,0'
Table A
WO #A18753
Logged By: Client
Date:. 10-28-78
Soil Description
Organic Topsoil.
Si~ty Sandy Gravel, moist, GM - F-].
Silty Gravelly Sand, moist, SM - F-2,
bccasional cobbles.
Sandy G_~ravell~ Silt, SM/ML, F-4, dmnp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
8.0t
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole
D_~/oth in Feet
From To
0.0' - 0.5'
0.5' 6.0~
6.0' 8.0'
8.0' - 12.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Coarse Sandy Gravels, GP - NFS, damp.
Coarse Sand with thin Silt layers, SP/SM -
~FS/F-2, damp.
Coarse Sand with layers of pea gravel, SP,
NFS, damp.
~2.0'
None Observed
None Observed
Test Hole Lo~ged By Client
Verified by Alaska Testlab
Test Hole
~epth in Feet
From To
0.0' - 8.0'
Table A
WO I~A18753
Logged By: Client
Date: 10-28-78
Soil Description
Peat, wet,
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
8o0~
None Observed
None Observed
Hole filled with water and
observed by Alaska Testlab.
snow when
Test Hole #4
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
pepth in Feet
From To
0.0' - 1o0'
Soil Description
Organic Topsoil.
1.0' - 3.0"
3.0' - 8.0'
Bottom of Test Hole:
Silty. Sand~ Gravel, GM - F~l, damp.
Fine Gravelly Silt~ Sands,
damp.
8.0~
SM
Frost Line:
None Observed
Free Water Level:
None Observed
Remarks: Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole ~t5
pepth in Feet
From To
0.0' - 0.5'
0.5' - 2.5"
2.5' - 8.0'
8.0' - 12.0'
Table A
WO ~A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Mat°
Silty Sandy Gravel with sliqht organic
content F-1 - GM, d~np.
Silty Sandy Gravels, GM - F-l, damp.
Coarse Gravelly Sands, SP - NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testiab
Test Hole ~6
D__epth in. Fe_e__t
From To
0.0' - 1.0'
1.0' - 2.0'
2.0' - 12o0'
Bot%om of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO ~A18753
Logged By: Client
Date: 10-28-78
Soil D e s_c r i_~ t io_n_____ __
Organic Topsoil.
Organic _Silty _Sandy Gravel,. GM - F-l, damp.
Sandy Gravels, GP, NFS, damp, 60% plus #4
aggregate, cobbles to 8 iuches.
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #7
Depth in Feet
From To
0.0' 1.0'
1.0' - 12.0"
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Sand~ Gravels, GP, NFS, damp,
12 inches, 60-70% plus ~4 agg.
cobbles
to
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
~2.0'
~one Observed
None Observed
Test .Hole Logged By Client
Verified by Alaska Testlab
Test Hole #8
pe_j~th in Feet
From To
0.0' - 2.0'
2.0' - 4.0'
4.0' - 7.0'
Table A
WO #A18753
Logged By: Client
]Date: 10-28-78
Soil Description
Organic Topsoil
Silt, ML, wet.
Coarse Gravels,
NFS.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
None Observed
-7.0'
Test Hole Logged By Clien-L
Hole full of snow when observed by
Alaska Testlab
Test Hole #9
D__epth in Feet
From To
0.0' - 1.5'
1.5' - 2.5"
2.5' - 10.0'
Table A
WO #A18753
Logged~ By: Client
[)ate: 10-28-78
Soil Descriptiqn
Organic Topsoil.
Coarse Sandy Gravels,
~ilty Gravelly Sands,
GP, NFS, damp.
SM, F-2, d~p.
Bottom of Test Hole:
Frost Line:
Free Water Level:
'Remarks:
10.0'
None Observed
None Observed
Test'Hole Logged By Client
Verified by Alaska Testlab
Test Hole #10
Depth in Feet
From To
0.0' - 0.5'
0.5' - 1.5'
1.5' - 3.0'
3.0' -~ 12.0'
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
~il%~v_ San~ Gravel, G~, F-l, damp.
Gravell~ Sands, SP, NFS, damp.
Layered Sandy Gravels and Gravelly Sands,
GP/SP, NFS, damp.
Bothom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alhska Testlab
Test Hole t[11
~e_pth in Feet
From To
0.0'- 3,5'
3.5' - 6.0~
Table A
WO 9A18753
Logged By: Client
Date: 10-28--'78
Soil Description
Peat with boulders~
Sandy Gravels with cobbles, GM - Y-~,
to 5 feet then saturated a{ 6 feet.
damp
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
6.0~
None Observed
6.0'
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole
D_~_pth in Feet
From To
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic
Layered
GP/SP, damp.
Silt, SM, damp.
Coarse. Sandy Gravels,
cobbles.
Topsoil.
coarse Gravels and[ Gravelly
Sands,
GP, N~S, damp, with
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
14.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
~ample Depth
1 4~0'
2 8.0'
Type of Dry
M_~% Sample S_~trenq~h ~roup Unified
1.4 G None A GP
6.2 G None B SP/SM
Remarks:
2.
3.
4o
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #13
Table A
WO #A18753
Logged By: Client
Date: 10-28-78
pepth in Feet
From To
Soil Descri]~t~ion
0.0' - 0.5'
Organic Topsoil.
0.5' -- 2.5" Coarse Gravels, GP, NFS, damp.
2.5' - 8.0'
Sal}_d~y Gravels, GP/GW, NFS, damp.
8.0'/~-~1-{)[0"~x/\ Sand,__ SP/SM, NFS, damp.
10.0' 14.0' Sand7 Gravels with cobbles,
/
Bottom BY ~ t Hole: 14.0'
GP/GW, NFS, damp.
Frost Line:
None Observed
Free Water Level:
None Observed
Remarks:
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth ~
1 9.0' 6.6
Type of Dry
Sample Strength Group Unified
G None B SP/SM
R~arks: ~.
3.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #14
D~pth in Feet
From To
0.0' - 0.5.'
0.5' -
Table A
WO t~A18753
Logged By: Client
Date: 10-28-78 &
1-9-79
Soil Description
Topsoil.
Coarse ~and~ Gravels
GW/GP, NFS, damp.
with cobbles to 8",
Bottom of'Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
and Redug and Verified by Alaska Testlab
(1-9-79)
S~nple /Depth M%
1 2.0'-12.0' 6.7
Type of Dry
~amplq ~.trength
G None
Group Unified
C GW
Remarks:
2.
3.
4.
5.
6.
Type of Sample,
U = Undisturbed.
Dry Strength, N=Nonel L=Low, M=Medium,
Group refers to similar material, this
General Information~ see Sheet 1.
Frost and Textural Classification, see
Unified Classification, see Sheet 3.
G=Grab, SP = Standard Penetration,
H=High.
study only.
Sheet 2.
Test Hole #15
~e~th in Feet
From To
0.0' - 1o5'
1.5' 3o0~
3.0' 12o0'
Table A
WO ~A18753
Logged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
Coarse Gravels, GP, NFS, damp.
COarse Sandy Gravels with cobbles,
NFS, d~p.
GP/GW,
Bottom of Test Hole:
Frost Line:
Free Water Level:
R~arks:
12.0~
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sa_~le pepth
1 10.0'
Type of Dry
M% Sample Strength Group Unified
4.2 G None C GW
Remarks:
1. Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
2. Dry Strength, N=None, L=Low, M=Medium, H=High.
3. Group refers to similar material, this study only.
4. General Information, see Sheet ~.
!5. Frost and Textural Classification, see Sheet 2.
6. Unified Classification, see Sheet 3.
Test Hole ~16
_De_loth ia Feet
From To
0.0' - 1.5'
1.5' - 8.0'
8.0' - 9.0'
9.0' - 12.0'
Table A
WO ~A18753
Legged By: Client
Date: 10-28-78
Soil Description
Organic Topsoil.
~andy Grave]., GP/GW, NFS, damp, with
Gravelly Sand, SP, NFS, damp.
Sandy Gravel, GP/GW, NFS, damp, with
cobbles.
cobbles.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
12.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Samp~__e Depth M_%
I 9.0' 2.8
Type of Dry
Sample Strength Group Unified
G None C GW
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet ~.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole If17
D_~_th in Feet
From To
0.0' - 0.5'
0.5' - 5.5"
5.5' - 10.0'
Table A
WO ttA18753
Logged By: Client
Date; 10-28-78
Soil Descri.~ion __
Topsoil.
Coarse Gravels with cobbles up to 8 inches,
GP, NFS, damp.
Gravelly Sandy Silt, SM/ML, F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
10.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Sample Depth
1 8.0'
Type of Dry
M_2%' Sample Strengt~ ~roup Unified
11p0 G None D ML
Ren~arks: 1.
2~
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole It18
Depth in Feet
From To
0.0' - 1.5'
1.5' - 6.0'
Table A
WO #A18753,
Logge~ By: Clien%
Date: 10-28-78
, Soil Description
Organic Topsoil.
Gravelly Sandy Silt, SM/ML, F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
6.07
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test IIole #19
pepth in Feet
From To
0.0 ' -~.~5.'.~
-
Bot Os~~ of Te - Hole:
Fro Lina~:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: Client & ATL
Date: 10-28-78 & 1-9-79
Soil Description
Organic Topsoil.
Coarse ~andy Gravels, GP, NFS,
Gravelly Sand, SP, NFS, damp.
damp.
13.0'
None Observed
None Observed
Test Hole Logged By Client
Verified by Alaska Testlab
Test Hole #20
perth in Feet
From To
0.0' t.0'
1.0' 12.0'
Table A
WO #A18753
Logged By: J.D. Mack
Date.: 1-10-79
Soil Description
Topsoil.
Gr__a_v__e~ Si]._t~ Sands, SM/ML, F-2/F-4, damp,
cobbles to 12 inches.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
~ample Depth M__%
1 6.0'- 8.0' 12.3
Type of Dry
Sample Strength Group Unified
G None D ML
Remarks: 1.
3.
4.
5.
6.
Type of S~nple, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~21
~epth in Feet
From To
0.0' - 2.0'
2.0' - 8.0'
8.0' - 12.0'
Table A
WO ~A18753
Logged Hy: J.D. Mack
Date:' 1-9-79
Soil Description
Topsoil.
Sandy Gravel with cobbles to
NFS/F-i, damp.
Gravell~ ~ilt, ML, F-4, damp.
8 inches, GW,
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Depth M_~
2.0'- 8.0' 5.4
8.0'-12.0' 12.2
Type of Dry
Sample Strength Group Unified
G None C GW
G Slight D ML
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet ~.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #22
Depth in Feet
From To
0.0' 1.0'
1.0' 12.0.'
Table A
WO #A18753
.Logged By: J.D. Mack
Date: 1-.9-79
Soil Description
To~lsoil.
Layered Sandy Gravels (GW), and Gravelly
Sands (SP), maximum aggregate size 5"
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
Ngne Observed
None Observed
Sample Depth M%
1 2.0'-12.0' 4.0
Type of Dry
Sample Strength Group Unified
G None C GW
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, II=High.
Group refers to similar materJ, al, this study only.
General 'Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole $23A
Depth in Feet
From To
0.0' - 2.0'
2.0' - 8.0'
8.0' - 10.0'
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
Table A
WO #A18753
Logged By: J.D. Mack
Date~ 1-9-79
Soil Description
Topsoil.
C~arse Sandy Gravels,
Silt, ML, F-4, damp.
10.0'
None Observed
7.0'-8.0' only
Test Hole 23A,
test hole 0.23,
GP, NFS, wet.
80' uphill from
water seepage at
Test Hole #23
~epth in Feet
From To
0,0' - 1.5'
1o5' - 12.0-'
Table A
WO ~1At8753
Logged By: J.D. Mack
Date: 4-9-79
Soil Description
Topsoil.
gravell~y Siit, ~, F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
I2.0'
None Observed
None Observed
Small water seepage at 4' to 4.5' below
groun~ surface
Test Ilole 1t24
.Depth in Feet
From To
0.0' 1.5'
1.5' - 3.5"
3.5' - 5.0'
5.0' - 8.0'
Table A
WO ~A18753
Logged By: J.D. Mack
Date~ 1-11-79
Soil Description
Organic Topsoil.
San¢]~ ~ravel, GP, NFS, damp.
Gravelly Silty Sand, wet, SM, F-2.
Dense-dry Gravell~ Sandy silt, ML,
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
None Observed
None Observed
Water seepage at -3.5'
~ample ~epth
I 7.0'
Type of Dry
M% Sample Strenf[th Group Unified
G Slight D ML
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified ClassificatJ. on, see Sheet 3.
Test Hole #25
~epth in Feet
From To
0.0' - 1.5'
1.5' - 2.5'
2.'5' - 10.0'
Table A
WO #A~8753
Logged By: J.D. Mack
Date: 1-~1-79
Soil Description
Organic Topsoil.
Sand, SP, NFS, wet.
Gravelly. Sand~ Silt, ~L, t~-4, damp,
dense.
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
10.0'
None Observed
2.0' to 2.5'
Water seepage between 2.0' and
2.5'
Test Hole #26
Depth in Feet
From TO
0.0' 2.0'
2.0' - 10.0'
Table A
WO ~A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Organics mixed with cobbles.
Gravelly Sandy Silt, ML, F-4,
becoming wet at -8.0'.
damp,
Bottom of Test Hole:
Frost Lille:
Free Water Level:
f0.0'
None Observed
None Observed
pepth M~%
I 6.0'- 8.0' 11.7
Type of Dry
~ample ~trength Group Unified
G Slight D ML
Remarks:
2.
3.
4.
5.
6.
Type of Sample, G~Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M-=Medium], H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Te. st Hole #28
Dept. h in Feet
From To
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
'Soil Description
TopSoil.
Coarse Sandy Gravels with boulders and cobbles
throughout depth, GW/GP, I~S, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
S~]ple Depth ~
I 5.0'-10,0' 4.8
Type of Dry
S~]ple Strength [~roup Unified
G None C GW
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, Ii=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #29
D_epth in Feet
From To
0.0' - 2.0
2.0' - 12.0
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
Soil Description
Topsoil~
~[ravelly ~and,~ Silt, SM/ML,
F-4, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
~ample Depth M__%
t 5.0'-10.0' 12.0
Type of
~ample
Dry
Strength Group Unified
G Slight D ML
R~narks: 1 .
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #30
Table A
WO t~A18753
Logged By~ J.D. Mack
Date: 1-1'1-79
D__epth in Feet
From To
Soil Description
0.0'
1.0'
10.0' - 12.0
Bottom of Test Hole:
Top~oil.
Coarse Sandy Gravels with cobbles and occasional
boulders, GP, NFS, damp.
Gravelly Sands with occasional
damp.
12.0'
cobbles, SP,
NFS,
Frost Line:
None Observed
Free Water Level:
None Observed
~ample Depth
1 8.0'
M%
Type of Dry
Sample Strength Group Unified
G None C GW
Rem]arks:
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Standard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole #31
Table A
WO #A18753
LQgged By: J.D. Mack
Date: 1-11-79
Depth in Feet
From To
Soil Description
0.0' 2.0'
Orggnic Topsoil.
2.0' - 4.0~ ~andy ~ravels, GW, NFS, damp.
4.0' - 7.0' Dense, dry Gravelly Silts, ML,
Bottom of Test Hole: 7.0' ~ -
Frost Line:
N~ne Observed
Free Water Level: None Observed
Test Hole #32
D__epth in Feet
From To
0.0' - 2.0'
2.0' - 4.03
4.0' - 8.0'
8.0' - 12.0'
Table A
WO #A18753
Logged By: J.D. Hack
Date: 1-10-79
'Soll Description
Organic Topsoil.
Sandy Silts and ~ilty Sands, ML/SM, F-4/F-2,
d~ap.
Slightly Silty Sand, SP/SM, NFS/F-2, occasional
cobbles.
Gravelly Silty Sands, SM/SM, -2, moist to wet.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Sample Depth
I 5.0'
3 10.0'
Type of Dry
M% Sample Strength Group Unified
4.4 G None B SP/SM
9.2 G None B SP/SM
Remarks: 1.
3.
4.
5.
6.
Type of Sample, G=Grab, SP = Stahdard Penetration,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium, H=High.
Group refers to similar material, this study only.
General Information, see Sheet 1.
Frost and Textural Classification, see Sheet 2.
Unified Classification, see Sheet 3.
Test Hole ~33
D~th i.n Feet
From To
0.0' - 2.0
2.0' - 4.0
4.0' - 12.0
Table A
WO #A18753
Logged By: J.D. Mack
Date: 1-9-79
' Soil Descriptio__n
Organic Topsoil~
S_~il_~ ~and, SM, F-2/F-4, damp.
Gra____vell~_y Sands~ SP, NFS, damp,
cobbles to 10~.
occasional
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Test Hole I[34
Depth in Feet
From To
0.0' - 0.5'
0.5' -. ]2.0'
Table A
NO #A18753
Logged By: JoD. Mack
Date: 1-10-79
Soil Description
To~soil.
Clean coarse Sand Gravels with clean Sand
layers, cobbles to-J2", GP/GW, NFS, damp.
Bottom of Test Hole:
Frost Line:
Free Water Level:
12.0'
None Observed
None Observed
Test Hole #35
D_~th in Feet
From To
Table A
WO 1~A18753
Logged By: J.D. ~ack
Date: 1-17-79
Soil Description
Organic Topsoil.
Layered Sand~ Gravels
(GW) and gravels
(GP) ..
Bottom of Test Hole:
Frost Line:
Free Water Level:
Remarks:
15.0'
None Observed
Ncne Observed
Percolation test hole
located on top of knob.
Test Hole ~36
D_/qpth in Feet
From To
6"1 - 20.0~
Bott~?~/eest
Frost Line:
Free Water Level:
Hole:
Remarks:
Table A
W0 #A18753
Logged By: T. Barber
Date: 1-16-79
Soil Description
Org~]ic Topsoil.
G~ave~l~ Sa~d~ Silt.
20.0'
None Observed
None Observed
Percolation test hole
in lower silt area.
~ample ~e_p_~! ~!
2.5I
5.0'
10.0I
15.0'
20.0'
Type of Dry
Sample Strength Group Unified
G D HL
G D ML
G D ML
G D ML
G D ML
R~]arks:
2.
3.
4.
5.
6o
Type of Sample,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=Medium,
Group refers to similar material, this
Genera]. Information, see Sheet 1.
Frost and Textural Classification, see
Unified Classification, see Sheet 3.
G=Grab, SP = Standard Penetration,
H=High.
study only.
Sheet 2.
Test Hole t137
Table A
WO ~A18753
Logged By: L. Sc~midt
Date: 1-17-79
perth in Feet
From To
Soil Description
Organlc Topsoil.
Gravelly S_ilty Sands/Sandy Silts.
Bottom of Test Hole:
20.0'
Frost Line:
None Observed
Free Water Level:
None Observed
Remarks:
Percolation test hole in upper silt area.
Sample Dept~
~0.0'
15.0'
20.0'
Type of Dry
M__~o S_ample S__trength Group Unified
G D SM/ML
G D
G D SM/ML
Remarks: 1.
3.
4.
5.
6.
Type of'Sample,
U = Undisturbed.
Dry Strength, N=None, L=Low, M=MedJum,
Group refers to similar material, this
General Information, see Sheet 1.
Frost and Textural Classification, see
Unified Classification, see Sheet 3.
G=Grab, SP = Standard Penetration,
H=High.
study only.
Sheet 2.
Test Holo L.otl - Doscription GuMe
Frost Classification -- NFS, Fl, F2, F3, F4, see "Soft Classification
Texture of Soil - An engineering classification of the softs by particle
size and proportmn, see "Soft Classification Chart", note thc
proportions are approximate ami modifications to the soil group due to
stratification, inclusions and changes in properties are included.
.d_an~, mm*tare forms portion of color, less tb~n pl,tstic limit,
I.W, NP, M% ur dilatency.j
Density - refers to more-or-less non.cohesive soils, such as sand gravel
mixtures with or wkhout a fine fraction, derived from drilling action
and/or sample data; usually described as: very loose, loose, medium
dense, very dense. General inten: is to portray earthwork
characteristics.
Stiffness- refers to morc-ordcss cohesive soils and fine grained silts of
the clay-*ih groups. Derived from drill ac.on and/or sample data. Very
soft, soft, stiff, very std'( and hard are commonly used terms.
Particle size - The largest particle recovered by the split spoon is
1-3/8", Shelby tube 3", auger flights (minute-man) 2", Auger flights
{13-$0 hollow sirra} 6'-8". Larger particles are described indirectly by
action of the drftling and arc referred to as cobble~, 3" to 8", or
boulders 8"+. Therefore when reviewing the gradation sheets, if any,
the description on the hole log nlust be considered for anindi'cation of
larger particle*,
Unified Soil Classification - This is a two leteer code. See Unified
~lassification sheet I'~ur~her definition, hi some eases AASHO and/or
FAA soil classifications may be shown as well as the uldfied.
AtterbergLimfts - useful for fine grained and other plastic softs.
p.~I; natural moisture content believed to be less than plastic limit
~nit$
l,~w+; n~tutal moisture co'teal believed to be greater Ihan liqmd limk
NP; non-plastic, useful as a modifying description of some silty
~d'riah,
Rock flour -finety ground soil tbac is not plastic but od~erwise appears
Organic Contenl usually described as Peat, PT, sometimes includes
of all organic, ~ as Pe.~l. This nlay include tundra, muskeg and bog
materiah
Muck - a modifier used to describe vet5 soft. strut-organic deposits
usuafly occuring below a peat deposit.
.Amorj~hus peat -- organic particles nearly or fully disintegrated.
Bottom of TesthoLa -- includes last samph' interval.
Frost Line - seasonal frost depth as described by drdling action ami/or
Frozen Ground - other than frost tine, described by samples, usually
includes description Oi ice content, oflen wftl Plclude modifwd Unilicd
Classification for frozen softs -- this :s a special case related to
permafrost studies.
Free Water Level - The free water level noted dur~ngdriUing. Thisls
soiIs requires observation wells or piezomeler instal]a.ons, used only m
special cases,
Blow/6" - The number of blows ufa 140 weight free falling 30" to
advance a 2" split spoon 6"; the number of blows for a 12" advance is.
by definition, the standard penetration.
.4% - natural moisture content of iht soft sample, usually not
performcd on clean sands or gravels belo~v thc waler table.
S__P, rt. ters to 2" split spoon driven into tile soil by 140 pound
weight, a disturbed sample,
.~., thin wall tube, "Shelby" used to obtain undisturbed ~amplcs
of fine grained soil,
~, "gr~b" disturbed sample from auger flightsorwaltoftrencb.
g, cut *amp:e, undisturbed sample from wall of trel~ch.
L=Low, M=Medium, H=High
(;rou~. - Tbe samples are pl~ccd into apparently similar groups based
reflect the general dbtrubed characlerislics of Ihe ~oils essigned to thc
SOIL, CLASSIFICATION CHART
30S GRAVEL
CLAY
CLAYEY
CLAYEY
CLAYEY
0 10
OR
sILTY SILTY
SILTY ,k ~
SAND
SANDY GRAVEL
GRAVELLY SAND
20 30 40 50 60
G RA V E L (+¢ 4 SC R E E N) %
)RAVEL
70 80
BY WE GHT
GRAVEL
90 100
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS TNAN 3% FINER TI4AN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F1 GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 nam.
F2 SANDY SOILS CONTAINING BETWEEN 3AND 15% FINER THAN 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 I'NAN i5% FINER TNAN 0.02 mm,
b, CLAYS WlTFI PLASTICITY INDEXES OF MORE TI-lAN 12. EXCEPT VARVED CLAYS.
F4 a. ALL SILTS INCLUDING SANDY SILTS. '
b. FINE SILTY SANDS CONTAINING MORE THAN t5% FINER THAN 0.02 mm.
c. LEAN CLAYS WITH PLASTICITY INDEXES OP LESS THAN 12,
d, VARVED CLAYS.
TRYCK ~' office, 7401 Street Anchor,ge, Al,ska 9950t , 90 ;'-279-0543, Cable TNHANCAK, Telex 090-25332
NYMAN
s~HAY6S
8171.0
September 18, 1979
Mr. Jerry Weaver
Planner
Municipality of Anchorage
Planning Department
City Hall Annex
Anchorage, Alaska 99501
Dear Jerry:
Attached are copies of the logs for the wells drilled on the Bounty
Terrace Subdivision property.
Please note that these wells were drilled to locate a community
water source, not individual water sources; hence, small veins of water
sufficient for individual residential use were passed, looking for a
larger capacity source.
Attached also ls a drawing of the small drainage way through the
property. This drainage way was located on the site by our survey crew.
Sincerely,
TRYCK, NYMAN & HAYES
Harry F. Shore
Landscape Architect
6
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