HomeMy WebLinkAboutPARADISE VALLEY BLK 7 LT 8O&O
BORING NUMBER Date Completed:
~= ~. ~-._ SOIL DESCRIPTION
~ FROZEN MOSS NL~T .6.0"
ORGANICS
5 Black, Moist
O' SANDY SILT W/SOME
GRAVEL
Scattered cobblest Dark
· Gray, Very Moist
o
· 1
O 12.5' to '18' -Brown
@
C~ Refusal on cobble 18,: 0'
I
LOCATION
SKETCH
No Scale
Lot 8
NOTE: DISTANCES SHOWN ARE APPROXIMATE ANO HAVE
NOT BEEN MEASURED eY SURVEYING METHODS.
EXPLANATION
ORGANIC MATERIAL
'~ Little Visible Ice OqO' Vx
~ A.B, t.-- ICE DESCRIPTION
(,[,)Ss 72,57.1°/o 85.gpcf
.f2'$~MPLE NUMBER
~ ~- DRY DFN$1TY
BEDROCK
~.-.-f'f?OZFN GROUND W.D.-~/NILEDRILLING
TYPICAL SOILS LOG
SAMPLER TYPE SYMBOLS
~--~ ORGANIC
SOIL
SYMBOLS ~
GRAVFL
~ IC~ M,¢S$1VE
Paradise Valley subdivision[
Anchorage, Alaska J ~ ~
J
~.DWG. NO ·
PERCOLATION TEST
TABLE 1
R&M NO. 851157
Time Elapsed Time Feet Inches Drop In Inches
1:36 0 .9' 10.4"
].:37 1 1.2' 14.4" 3.6"
1:39 3 1.4' 16.8" 2.4"
1:41 5 1.6' 19.2" 2.4"
1:46 10 1.95' 2314" 4.2"
1:56 20 2.5' 30.0" 6.6"
~2:06 30 2.95' 35. 4" 5.~4"-'
2:16
2:26
2:36
40
5O
60
3.2' 38.4"
3.5' 42.0"
3.8' 45.6"
10.2 inches
2.9 minutes per inch
3.
3.6"
%
December 15, 1978 R&M No. 851157
Polar Realty
101E. International Airport Rd.
Anchorage, Alaska
Attention: Bob Stanton
Subject: Soil Investigation for Sanitary Sewer System, Lot 8, Block 7,
Paradise Valley Subdivision, Anchorage, Alaska
Dear Mr. Stanton:
At your request of Novembe 1978, we conducted a subsurface so£1s inves-
tigat±on at the proposed lo[~Z_on of the sanitary sewer system on the subject
lot. The investigation complied with those procedures required by the
Hunic±pality of Anchorage Department of Health and Environmental Protection.
This investigation, which was accomplished on December 11, 1978, consisted of
a test hole excavated to a depth of 18 feet below the existing ground
surface. The test hole was sited according to your instructions and its
location is shown in attached Drawing A-01. Drilling was accomplished with a
rotary drill rig using continuous flight solid-stem auger with an outside
diameter of 8 inches. A sample was taken at the depths shown on the soils
log in Drawing A-01. The sample will be held in storage at our lab for
approximately six months. In addition, all material brought to the surface
by the augers was continuously monitored by an experienced engineering
geologist.
The topography at the drilling site is generally gently-sloping to the south.
At the time of the investigation the site had original vegetation consisting
of spruce and alders. The top of the test hole was located at original
ground surface.
The soils encountered in the bore hole are shown in the test hole log in
Drawing A-01. This log displays specific conditions encountered at the test
location. However, subsurface conditions may vary in other parts of the lot
without any apparent surficial evidence of the change. ~:ac~t
~nc~n~rod ~nd h~d~O~k was not encounter_q~. At the time the hole was
drilled seasonal frost was present from the surface to a depth of 6 inches
and permafrost was not encountered.
A percolation test was performed within the bore hole at the depth.shown in
the attached Table 1. All depths were measured from the top of the hole.
The data 'in Table 1 show average infiltration from the depths indicated to
the bottom of the hole. The measured percolation rate was 2.9 minutes per
inch.
December 15, 1978
Polar Realty
Page -2-
We appreciated this opportunity to be of service to you. Please contact us
if you have any questions concerning this letter or if we can be of addi-
tional service.
Very truly yours,
R&MCONSULTANTS, INC.
Ernest R. Rahaim
Staff Geologist
~~'Manager ~
ERR/GS/djb/12-H
.