HomeMy WebLinkAboutPITZER S-5226
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION
ENVIRONMENTAL HEALTH CASE REVIEW WORK SHEET
L~ PLATTING BOARD [] PLANNING & ZONING
:ASE NUMBER NAME
S-5226 Pitzer Subdivision
DATE RECEIVED
August 2, 1979
COMMEN'r TO PLANNING 8Y
August 22, 1979
FOR MEETING OF CASE OF
71-014 (Rev. 2/78)
S 49~59°19"E 659.44'
( S 49'20'Od'E 660.00')
5.
)0')
19
32
50
60
~' OF DEZ~ICA170N BY THE' I~INICIt~LITY OF' ,ANCHORAGe'
· LEGEND:
I~ B.L.M. B.C. MONUMENT
(---) RECORDED ORIGINAL DAT,/
~-- MEASURED DISTANCE
MUNICIPALITY OF ANCHORAGE
!(~~ DEPARTML OF HEALTH & ENVIRONMENTAL PRC ;TION
ENVIRONMENTAL' ENGINEI-' RING DIVISION
825 L Street- Anchorage, Alaska 99501 Telephone 264-4720
ON.SiTE SEWAGE DISPOSAL SYSTEM AND/OR WELL INSPECTION REPORT
NAME
[~ UPGRADE
MAILING ADDRESS
LEGAL DESCRIPTION
LOCATION' NO. OF BEDROOMS
DISTANCE TO: I Well I Absor,t,on area Dwelling PERMIT NO.
~~ Z Manufacturer Material No. of compartment~
~ I- Liq. capacity in gallons' IF HOMEMADE: Inside length Width Liquid depth
Well Dwelling PERMIT NO.
~ ~ Z~ DISTANCE TO:
O z ,~ Manufacturer Material Liquid capacity in gallons
ion_ .Nearest ,pt line .PERMIT NO.
t DISTANCE TO: Well
~ u~::' No. of lines t Length of each line~.O. Total I~,of lines. I Tr~'?dth' inches Distance between lin~
. Top of tile to finish grade Material beneath tile Total effective absorption area
inches
Length Width Depth . PERMIT NO.
,~ t-- ' Type of crib Crib diameter Crib depth Total effectiv~ absorption area
~u Well Building foundation Nearest Iol line
¢ DISTANCE TO:
~ ,Class Depth DrilLer Distance to lot line PERMIT NO.
u,I Building foundation Sewer line Septic tank Absorption area[si
~ DISTANCE TO:
OTHER
PIPE MATERIALS
SOIL TEST RATING
INSTALLER
REMARKS
--APPROVED DATE LEGAL
72-O13 IRev. 3/78]
Z
Z
ENG, E RS SURVEYORS
bOO WEST 53RD AVE, NU~E
ANCH0 R,~GE,.A LAS~KA 99502
272-9,522
August 25, 1980
John Lynn
Department of Health & Environmental Protection
Environmental Sanitation
825 L Street
Anchorage, Alaska 99501
RE: Pitzer Subdivision
Dear Mr. Lynn;
Enclosed is one copy of the revised plat for the subject subdivision and one
copy of the soils data for Lot 2 of that subdivision.
I believe this completes the soils data requirements for this subdivision.
Very truly, yours,
4040"B" STREET
ANCHORAGE, ALASKA 99503
(907) 278-1551
Ken Stephenson Ii i''~ //
6216 Old Seward Highway' ¥'"'": :'~
Anchorage, Alaska 99507
August 14, 1980
W.O. #A19412
Area 2
Subject:
Test Pit Exploration for Septic System Design, dot 31,
UoS. Survey 3201, Section 9, Township 10N, Range 1W,
Seward Meridian
Dear Mr. Stephenson:
At your request,' Mr. Dave Paul, senior engineering technician,
logged a test pit on the subject property on August 7, 1980. The
property is near Bird Creek on the Seward Highway south of Anchorage.
The test pit was dug while Mr. Paul was present with a backhoe
which you contracted.
The soils encountered are graphically shown on Figure 2 attached
to this letter. The soil from the surface to 2.5 feet was a
brown sandy gravelly silt. Below this layer is a dense sandy
gravel having about~~~_sil{,? The gravel is well graded
and has occasional cobbles. A grain size distribution test was
conducted on a sample of this soil. The results are attached as
Figure 2. No ground water was encountered. The sandy gravelly
silt is impervious, but the gravel underlying the silt is permeable.
Based on our experience with simil~ soils, we ~guld estimate its ~
permeability is on the order of 10 centimeters per second. We
recommend that the septic system drainfield be designed to provide
150 square feet of absorption area per bedroom. The system
should be designed and constructed in accordance with the Municipality
of Anchorage regulations.
The following are attached and complete this report.
Ken Stephenson
August 14, 1980
Page Two
Test Pit Location Sketch
Test Pit Log
Grain Size Distribution Curve
Standard Explanatory Information
Figure 1
Figure 2
Figure 3
Sheets 1-2
If you have any questions, please contact our office.
Sincerely yours,
ALASKA TESTLAB
s R. Finl'%y, Jr., P.E.
Geotechnical Engineer
Approved by:
Melvin R. Nichols, P.E.
Manager
JRF/mg
Attachments
Lo,,
ALASKA---TEST~.2
DEPTH
O--
I
TEST
RESULTS SAMPLES
TEST PIT
WORK ORDER A19412
LOGGED BY D. Paul
ELEVATION--
N E
DEPTH
F-4, BROWN SANDY GRAVELLY SILT,
MOIST, NON-~LA.~I~. ~
2.5
NFS, SANDY GRAVEL WITH APPROXIMATELY
10% SILT, FINE TO COARSE, WELL-GRADED
OCCASIONAL COBBLES, MOIST
7
10
12
MA Sheet 1
13
TEST KEY:
W= MOISTURE CONTENT
LL = LIQUID LIMIT
PL = PLASTIC LIMIT
MA-' MECHANICAl. ANALYSIS
BOTTOM OF TEST PIT MAXIMUM REACH OF
BACKHOE. COMPLETED 8/7/80. NO
GROUND WATER ENCOUNTERED.
LOG OF TEST PIT
TEXTURAL
.~OIL CLASSIFICATION CHART
'~? \ ~o
2/ 2-" -~
GRAVEL 30°/o
CLAY
CI2AYEY
CLAYE~
OR
0 I0
SAND
SILT
GRAVEL
GRAVELLY SAND GRAVEL
20 ~ 30 40 50 60 70 80 90
GRAVEL (+ :ti:4 SCREEN} % BY WEIGHT
I00
FROST CLASSIFICATION SYSTEM
NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER THAN 0.02 mm.
GROUPS OF FROST-SUSCEPTIBLE SOILS:
F1
F2
F3 a.
b.
F4 a.
b.
c,
d.
GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 mm.
SANDY SOILS CONTAINING BETWEEN 3 AND 15% FINER THAN 0.02 mm.
GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm. AND SANDY SOILS
(EXCEPT FINE SILTY, SANDS) CONTAINING MORE THAN 1.5% FINER THAN 0.02 mm.
CLAYS WITH Pt_ASTICITY INDEXES OF MORE THAN ].2. EXCEPT VARVED CLAYS.
ALL SILTS INCLUDING SANDY SILTS.
FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm.
LEAN CLAYS WITH PLASTICITY INDEXES OF LESS THAN
VARVED CLAYS.
L
,G 5
F ,?
4
29
A SUBDIt/ISIOIV OF lOT $1, U. $. SUt~V£Y
WAKON l t?EDBII~D ~t ASSOCIATES
1981-142_