HomeMy WebLinkAboutHUNDRED HILLS S-4509 nclreol Hi Ils
CASE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
PLATTING O*R PLAi~NING AND ZONING CASE REVIEW
stin~
PETITION FOR
DATE RECEIVED
REZONING
SPECIAL
VACATION
RE6UBDIVISION
COMMENT TO PLANNING BY
ION
OF Robert C. Johnson, R.L.S. for Pr~limlnary Plat nC
Lots 3A & 3B, Blk 3, Hundred Hills Subdivision - a subdiv
of Lot 3, Blk 3, Hundred Hills Subdiv located within
SW 1/4 Sec 10, T13N, R1W, S.M. Ak, containing 3.126 acres
+
22, 1977 FOR MEETING OF August 4, 1977
COMMENTS:
ENVIRONMENTAL SANITATION:
PUB[ NOT AVAILABLE
~ of Cases
'ER NOT ERVICE PETITION
ENVIRONMENTAL ENGINEERING:
/ UG - 41977
S-4509 HUNDRED IriILLS SUBD., BLOCK 3, LOTS 3A & 3B --'The Munici?aliry
Anchorage has received a petition from ~Vi[liam E~ Johnston to resubdiv~de ;~pp,o;<~m;~ e,y~
3.126 acres from one lot into two Io~. The petition area is located southbast of Wo~f Dri,.'e~
and cast of the South Fork of the E~I:~ River.
The pta~ was denie~ based upo~ an ,~qs~ab~ design.
i~.yes: Gerry O' Courior, Nason Wade.
Nayes; David Dorris, Lo~eli Thorsness~ Eugene i~eavens, Liz Johnson~
71-O14 {9/76)
· TESTING · EXPLORATION · CHEMICAL · MATERIALS · INSPECTIOt~
1940 POST ROAD
ANCHORAGE, ALASKA
99501
July 20, 1973
W.O. 16100
PHONE 279-258l
Mr. Peter Ostdiek
c/o 1301 Post Road
Anchorage, Alaska
99501
Subject:
Test-Pit Logging for Seepage Pits
Tracts B & C, Hundred Hills Subdivision
Dear Mr. Ostdiek:
In accordance with your request, Mr. Oz Hatch, our senior technician,
inspected and logged the six test pits that we recommended for your
52-acre proposed subdivision in Eagle River. This work was accomplisked
July 19, 1973.
Mr. Hatch feels that the six test pits, located as shown on the attached
sketch, present a fair indication of the soil cOnditions on your property.
We Understand that your 14 lots would range from 2.0 to 4.7 acres in size.
As you can see from the attached logs, the bulk of soil .is Fi silty
sandy gravel, with the water table being encountered in T.P. 3 only.
We believe that a fair value for seepage-pit requirements is 225 square
feet per bedroom. Assuming the top two feet are lost because of the
cover, and a water table no closer than four feet below the bottom, for
an effective section of 2 to 10' depth, the following requirements would
apply:
Size
1 bedroom home
2 bedroom home
3 bedroom home
Seepage Pit Size
7' x 7' x 8' high
14' x 14' x 8' high
21' x 21' x 8' high
If you have any questions or comments, please call us.
Very truly yours,
PGH: das
TABLE A
TEST-PIT LOGS
Test Pit 1
Depth in Feet
From To
Soil Description
0.0 0.5
0.5 2.0
2.0 14.0
Ore rb urden
Fl, brown, very ~ilty sa~gravel, damp, medium-high
density, GM (25%± Silt)
Fl, brown, silty sandy gravel, occasional cobbles, few
boulders, damp, mediu-~---~-~gk density, GM (15%± Silt)
Free Water Level: None
Test Pit 2
Depth in Feet
From To
0.0 0.5
0.5 2.0
2.0 13.0
13.0 14.0
TABLE A
TEST-PIT LOGS
Soil Description
Overburden
Fl, brown silty sandy gravel, damp, medium density, GM
(20%_+ silt)
NFS, brown, very san'dy gravel, trace of silt, damp,
medium-kigh density, occasional cobbles, few boulders, GP
Fl, brown silty sandy gravel, damp to wet, medium-high
density, GM (25% silt)
Free Water Level: None
TABLE A
TEST-PIT LOGS
Test Pit 3
Depth in Feet
From To
6.0 0.5
0.5 15.0
Soil Description
Overburden
Fl, brown, silty sandy gravel, occasional cobboles, few
- ~-- ~--~=--~ -~ it
boulders, damp, medium-high aens y, GM (15-20-~ silt
Free Water Level: 14.5'
Test Pit 4
Depth in Feet
From To
TABLE A
TEST-PIT LOGS
Soil Description
0.0 0.5
0.5 13.0
Overburden
Fl, brown ~dy gravel, damp, med. ium-high density,
~ alternatzng with ~F~n, sandy gravel, damp, medium-
h~g~ density, GP (5 to 20% silt)
Free Water Level: None
Test Pit 5
Depth in Feet
From To
TABLE A
TEST-PIT LOGS
Soil Description
0.0 0.5
0.5 11.0
Overburden
F1, brown, silty sandy gravel, damp, medium-high density,
occasional cobbles, few boulders, G!{ (20%+ silt)
Free Water Level: None
TABLE A
TEST-PIT LOGS
Test Pit 6
Depth in Feet
From To
Soil Description
0.0 0.5
0.5 1.5
1.5 12.0
Overburden
F4, brown sandy silt, stiff, non-plastic, ML
Fl, brown silty sandy gravel, medium-high density,
occasional cobbles, few boulders, GM (15-20% silt)
Free Water Level: None
,<'