HomeMy WebLinkAboutT15N R1W SEC 4 Lots 25 and 32 S-3140
GEOLOGIC SOIL INVESTIGATION
OF
BLM LOTS 25 AND 32, SUND PROPERTIES
Located Within Section 4, Township 15 North,
Range 1 West, Seward Meridian, Alaska
July 12, 1973
pREPARED FOR:
Richard Sund
Peters Creek, Alaska
PREPARED BY:
Hewitt V. Lounsbury & Associates
723 W. 6th Avenue
Anchorage, Alaska 99501
W. O. #73-350
TABLE OF CONTENTS
INTRODUCTION
SITE DESCRIPTION
FIELD INVESTIGATION
SUB-SURFACE C~NDITIONS
CONCLUSIONS AND RECOMMENDATIONS
LOCATION MAPS, TEST LOGS AND DATA
INTRODUCTION
This report is the result of field investigations conducted on
July 9, 1973, of properties known as BLM Lot 25, the Southwest One-
Quarter, Section 4, Township 15 North, Range 1 West, Seward Meridian,
Alaska. The property is approximately one mile West of Peters Creek
and comprises.approximately 2.5 acres. The purpose of this investi.
gation is to survey the surface and sub-surface conditions and to
determine the feasibility of proposed residential development. ,
SITE DESCRIPTION
The property under investigation is partially developed wi th a
residence on L6t 32 immediately to the South, and a gravel roadway
on the North boundary. There is also a residence on the lot to the
East. The topography of Lot 25 is regular and relatively flat with a
drainage ditch on the North boundary.. The topography of Lot 22
slopes slightly to the West and drops off in the Southern portion to
Peters Creek Valley. The predominate vegetation of Lot 25 is alder
and grasses with some groves of spruce and birch.
FIELD INVESTIGATION
Soil investigations consist of two test trenches dug with a
Case 580 Backhoe. Visual inspection was made of the trenches and
logged in this report (see Location Maps).
SUB-SURFACE CONDITIONS
Various U. S. Geological Survey publications define the soils
within the immediate area as younger glacial morainal deposits.
These are generally non-sorted or poorly sorted terrigenous sediment
that consists of sand and/or larger particles in a muddy silt clay matrix.
These sources~further state that these deposits may yield small qua?tities
of water locally from gravel lenses. ~
The test holes confirmed this information and revealed brownish gray
sandy silty gravels and gravelly silts with occasional large stones. This
material was extremely dense and very poorly graded. In Test Hole #2
where larger amounts of gravel was present, water was also present. We
conclude that because of interspersed gravel lenses and capillary action
within fine gr~ined soils, water distribution and "water table" 'is ex-
tremely variable.
Recent test trenching conducted about 1,000 feet to the North and
East of this property by others ~evealed similar conditions. There are
known areas in the vicinity, however, which yield more permeability and
lower water tables.
CONCLUSIONS AND RECOMMENDATIONS
The following conclusions are made from the field investigation
herein described:
1. Soil conditions revealed by these tests indicate that soils en-
countered are suitable for foundation construction. However,
special care should be taken in the waterproofing of foun-
dations founded below eight feet. All excavations should be
de-watered prior to construction of foundations.
Soil conditions encountered are poor for on-site sewage disposal
facilities. Although percolation tests were not conducted dur-
ing this field investigation, a design factor of 225 to 250
square feet per bedroom is recommended in design of any on-site
sewage disposal systems. Due to ~.~ater table conditions, ~eepage
pits are not recommended. In the design of on-site drain
fields, preliminary calculations indicate that a 60'x60' drain
field with ten distribution trenches would be.needed for a four
bedroom residence.
Respectfully submitted,
tIEWITT V. LOUNSBURY & ASSOCIATES
n R. Clark '~
Loren H. Louns6ury, P.E.
I
~_ .5 Ac
I?.
Date Begun
L~te Completed
Project Name
Loe~dlen
Method Used
Field Party
Weather
'~'! £ OG Ot~ TEST L~OHING
'I ~ Hole No.
He.itt V, £ounsbury '~ Assoct'ates. 'Sheet
En~l'neers ~ Surve)ors ToM/ Depth
Anchoroge~ . AlasRa
C~L~P~e4Q ~ ,~o ~ Gee/egis!
Ground Water
}Dep/h ln Ft ~ ~ N ~
IT/me I
LD°te I
Teble
~mpling
cohen Nates £ Oiagramt .
DESCRIPTION ·
$oil type~ colo6 lex/ur% I ' ' · ' '
sampler driving notesj
no/es oo drilling eose~ :
30
Dais Completed
~-~ ~ OG OF TE~T BORING ~
· · Itolo No.
~,-~--~~ H~wMt ~ t ou~sbur7 ~ ,Associ~r~. She~
Rig No · Engineers ~ Surveyors . Total Depth
~ ~ Anchor~ge~ . Alosha .
Grouhd tYoter
IZet~od Used ~,~C ~a~_ . ' '- ' ~epth ~ FZ ~Z ~
Table
J
7~o~
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PLAT APPROVAL
fhis~day of ~-~
ACCEPTAI~E OF DEDICATION
TIlE MUNICIPALITY OF ANCJ'IORAGE HEREBY ACCEPTS FOR
PUBLIC USES AND FOR F'd~LIC MJRPOSES THE REA. L PROPERTY
DEDICATED ON THIS MAT INCLUDING, BUT NOT UM~TED
TO, THE EASEMENTS, RIGHTS-OF-WAY, ALLEYS, ROADWAYS,
THOROUGHFARES, AND pARKS SHOWN HEREON.
DATED AT ANCHORAGE,ALASKA THIS-~~DAY
ATTEST:
TAX C ERTl F JCATION
ALL REAL PROPERTY TAX~S LEVIED BY THE MUNICIPALITY OF
ANCHORAGE ON THE AREA SHOWN ON THIS PLAT HAVE BEEN
)ATE AUTHORIZED OFFICIAL
TYPICAL NARKING
CERTIFICATE OF OWNERSHIP AND DEDICATION
WE HEREBY CERTIFY THAT WE HOLD THE HEREIN SPECIPI ED PROPERTY
INTEREST IN THE PROPERTY SHOWN AND DESCRIBED HERSON, THERE
SHALL BE RESERVED ADJ&CENT TO THE STREETS SHOWN HEREON A
FILL SLOPES OF 1.5 FEET HORIZONTAL FOR EACH ! FOOT VERTICAl.
(~J.5 TO 1) OF CUT OR FILl. FOR THE PURPOSE OF PROVIDING AND
i~AINTAINING TH E LATERAL SUPPORT OF THE CONSTRUCTED STREET o
THERE IS RESERVED TO THE GRANTORS, THEIR HEIRS, SUCCESSORS .AND
ASSIGNS, THE RIGHT TO USE SUCH AREAS AT ANY TIME UPON PROVIDING AND
AND NLAINTAINING OTHER ADEQUATE LATE~L SUPPORT AS APPROVED
BY THE MUNICIPALITY.
WE HEREBY AGREE TO THIS PLAT, AND TO ANY RESTRICTION OR COVENANT
APPEARING HEREON AND ANY SUCH RESTRICTION OR COVENANT SHALL
BE BINDING AND I~IFORCEABLE AGAINST PRESENT AND SUCCESSIVE
OWNERS OF THIS SUBDIVIDED PROPERTY.
ADDRESS
N OTARY~S ACKNOWLEDGMENT
OWN ER
ADDRESS
SUBSCRIbeD AND SWORN BEFORE ME THIS .~._DAY OF~ 19~°~.
SURVEYOR'S CERTIFICATE
I, PATRICK H. KALEN~ PROFESSIONAL LAND
~z-~-"' .~ '*'-. ¢ ~ -~ ,.._.
~ ~:, ~-~ .,~
DTI002425
BLM LOTS 34A &3/*B A SUBDIVISION OF
BLM LOT 34 in SEC4. T15N, RlW,
SEWARD MERIDIAN COMPRISING 2.51
GROSS ACRES AND 2.08 NET LOT ACRES~
KAUENCO INC.
1981-240
DTI002426
i
LEGEND
PLA T A PPRO VA L
ACCEPTANCE OF DEDICA T/ON
TAX CERTIFICATION
CER TIFICA TE OF OWNERSHIP and DEDiCA T/ON
VE~TED OWNER
A PLAT OF
B.L.N LOT $~,
40i EAST FIRENEED LANE
ANCHORAGE, ALASKA 9q505
/?
~5LoIK. 'Z
ROBERT C. JOHNSON R.LS.
Ig78-10G7