HomeMy WebLinkAboutEAGLEWOOD S-4920
DEPARTMENT OF HEALTH AND ENVI.RONMENTAL PROTECTION
PLATTING OR PLANNING AND ZONING.CASE REVIEW
CASE S-4920
PETITION FOR
DATE RECEIVED
EXCEPTION
)N
)IVISION
COMMENT TO PLANNII~
COMMENTS:
ENVIRONMENTAL SANITATION~
Road vacations
:OR MEETING OF Sept 6 '78
of Cases
~P~LI C WATE B,~,T AVAI LAB LE
TO SERV CE PETIT, ION AREA.
ENVIRONMENTAL ENGINEERING:
71-014 (9/76)
TRYCK Office/74
NYMAN
E HAY6S
ENGINEERS / PLANNERS / SURVEYORS
8135.0
Anchorage, Alaska 99501 /907-279-054~-'~;able TNHANCAK/Telex 090-25332
July 12, 1978
Mr. John Lynn
Dept. of Health & Environmental Administration
825 L Street
Anchorage, Alaska 99501
Subject: Soils Tests/River Woods Subdivision in
Eagle River
Dear John:
Attached are supplemental test holes for the above,captioned project
in Eagle River. These soils samples were obtained by Mr. Marvin Beyer
of this firm.
If you require any further information or have any questions
regarding this submittal, please advise.
Very truly yours,
MAN & HAYES
Dan Chapmen, P .~
Partner
DC:la
SUBSURFACE INVESTIGATION FOR RIVER WOOD SUBDIVISION
Eagle River, Alaska
The subsurface investigation was conducted on May 13 and 14, 1978
using a Case 580 backhoe to excavate the test pits. Test pit sites were
chosen and logging was performed by Marvin Beyer, P.E.
A total of 8 test pits were placed in var.ious locations so that
they would be'representative of all soil within the 29 acre tract. The
test pits were located by pacing from apparent, topographic features so
the location shown on the accompaning map are approximate.
The area is in alluvial fan outwash of well graded gravel with
layers of silty gravel and gravelly silt with an occasional large (10OO lbs.+)
boulder. The area is heavily tree covered with birch and occasional
spruce. The top 1 to 2 feet consists of organic growth with a sandy
silt or gravelly silt topsoil.
No ~roundwater was encountered and there does not appear to be any
shallow groundwater table within the proposed subdivision.
The NFS sandy gravel appears to be eXcellent road building material
and, in the opinion of the writer, there is an adequate quantity of NFS
material on the site to construct the roads in the proposed subdivision.
An analysis of the material encountered in the test pit indicates
that the area is suitable for on-site septic tank and leaching field or
leaching pit sewage disposal systems for individual residences.
All soils analysis was by visual classification. One sample of
material was retai'ri~d from each test pit.
1 mc
Test Pit No.
RIVER WOODS SUBDIVISION
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
Depth in Feet'
F ronl tO
0.0' 0.4'
0.4' 2.0'
2.0' 3.5
3.5' .4.8'
4.8I 5.6'
5.6' 8.0'
8.0' 13.8'
Soil Description
Organic Material
ML sandy silt with roots and decayed vegetation
F-2, SM silty sand, clean, damp
NFS, GW, sandy gravel
F-2, GM, silty gravel to gravelly silt
NFS, GW, sandy gravel with thin (0.1') layers of
sandy silt
F-2, GM silty sandy gravel, dry with occasional
6"+ boulder
13.8'
Frost line
Free water level
Bottom of hole
None observed
Test Pit No. 2
Depth in Feet
From to
0.0' 0.4'
0.4' 2.0'
2.0' 2.4'
2.4' 3.8'
3.8' · 4.01
4.0' 8.8'
8.8' 14.2
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
Soil Description
Organic material
ML, sandy silt with roots, organic
NFS, GW, sandy gravel
FI, GM, silty sandy gravel
F3, ML, thin layer of sandy silt
NFS, GW, sandy gravel
NFS, SW, gravelly sand, clean
14.2'
Bottom of hole
Frost line
Free water level
1.5I
None observed
Test Pit No. 3
Depth in Feet
From to
0.0' 0.5'
0.5' 2.0'
2.0' 3.0'
3.0' 13.9'
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
Soil ;escription
Organic material
ML, sandy silt with roots, organic, occasional boulders
F2, SM, gravelly silty sand, dry
FI, GM, silty sandy gravel, well graded mixture,
almost NFS, dry
13.9'
Bottom of hole
Frost tine
Free water level
2.2I
None
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
Test Pit No. 4
~epth _in Feet
From t~
0.0' 0.5'
0.5' 2.1'
2.1' 4.1'
4.1' 12.0'
Soil Description
Organic
ML, sandy silt with vegetation, occasional 3''+ boulder
NFS, GW, clean coarse gravel, 4" maximum
Fl, silty gravel, very tight, occasional 8"+ cobble, dry
12.0
Bottom of hole
Frost line
Free water level
2.0'
None
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
Test Pit No. 5
_Depth in Feet
From to
0.0' 0.8'
0.8' 2.2'
2.2' 4.5'
4.5' 6.0'
6.0 '13.0'
Soil Description
Organic
ML, tan sandy silt topsoil
NFS, GW, coarse sandy gravel With some 8Il+ boulders
NFS, GW, medium sandy gravel, 2"+ cobbles
NFS, GW, coarse grey sandy gravel, few fines, open
graded
13.0'
Bottom of hole
Frost line
Free water level
2.5I
None
Test Pit No. 6
Date: 5-13-78
Logged by: Marvin Beyer, P.E.
~ept~ in Feet
From to
0.O' 0.5'
O.5I 1.4'
1.41 13.O'
Soil Description
Organic
ML, sandy silt topsoil with occasional 8"+ boulder
Fl, GM, silty sandy gravel, hard, dry, occasional
12'1+ boulder
13.O'
Bottom of hole
Frost line
Free water level
1.8~
None
Test Pit No. 7
Depth in Feet
From to
0.0' 0.6'
0.6~ 2~0'
2.0' 12.5'
Date: 5-14-78
Logged by: Marvin Beyer, P.E.
Soil Description
Organic
Fl, GM, silty sandy gravel, brown, organic
NFS, GW, coarse sandy gravel, damp, 6"- cobbles
12.5'
Bottom of hole
Frost line
Free water level
2.0~
None
Test Pit No. 8
Date: 5-14-78
Logged by: Marvin Beyer, P.E.
~e_~IPth in Feet
From to
0.0' 0.4'
0.4' 2.0'
2.0' 5.6'
5.6' 13.2'
Soil Description
Organic
ML, brown gravelly silt topsoil
Fl, GM, silty sandy gravel, marginal NFS
NFS, GW, sandy gravel, dry, max'mum 6" cobbles
13.2'
Bottom of hole
Frost 1 ine
Free water level
2.0~
None