HomeMy WebLinkAboutBIRCHWOOD SOUTH Block 2 Lots 1-4
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH & ENVIRONMENTAL PROTECTION
ENVIRONMENTAL HEALTH CASE REVIEW WORK SHEET
~J PLATTING BOARD E_~ PLANNING & ZONING
CASE NUMBER NAME
S-6285 Bots 1 - 4 Block 2 Birchwood South Subdivision
DATE RECEIVED
May 3, 1982
COMMENTTO PLANNING BY
May 21, 1982
FOR MEETING OF CASE OF
'["~ PUBLIC WATER NOT AVAILABLE TO PETITION AREA
L~___] PUBLIC SEWER NOT AVAILABLE TO PETITION AREA
REVlEWER'SCOMMENTS:
71-014 (Rev. 2/78)
"" INICIPALITY OF ANCH, ORAGE
DEPARTMENT ~F HEALTH AND ENVIRONMENTAL PRO i'ECTION ri PERCOLATION
TEST
825 L Stra~, Anchorage, Alaska 99501 264-4720
PERFORMEb FOR: TtP--IAD ~AJ~-INE. F_J~I/~-
DATE PERFORMED:
LEGAL DESCRIPTION: ~KLUTNA F~II;:~n-~INi3~3D ?'~)I)T~,I __~O.F;~DI'~JlS|ON F"~LOCF.. Z TE..~T
SLOPE SITE PLAN
DEPTH
(FEET)
'7,0'
4
5
6
7
8
9
10
11
12
13
~12.~3~/N 51LT, HL~MOI6T T~
/VO
mOIST~
Bp. ov,//,J 51LTV 5A~JO¥
~-M ~ I~ ~ WAS GROUND WATER
ENCOUNTERED?
t~uc~.~ ~&~L~A~_ ~. 11,5 '
I0.0' ~l~ rS'l-
IF YES, AT WHAT
DEPTH?
S
L
O
P
E
Gross Net Depth t~ Net
Reading Date Time Time Water Drop
/
14
15
16
17
18
19
2O
To TAL I~Tf( oF
2. o.0 '
PVP-. iIJJ-r'AL,LI~D TO II .5 '
PERCOLATION RATE
TEST RUN BETWEEN
FT AND
[m;nmm/inch)
"~. "7'~-- FT
COMMENTS : '
PERFORMED
CERTIFIED BY:
· ?2..oos
LJ ~L)I L.b LUIo
:.JNICIPALITY OF ANCH, ORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION I-] PERCOLATION
TEST
825 L Strait, Anchor,.ge, Alaska 99501 264-4720
PERFORMEb FOR:
DATEPE..ORMED;z
LEGAL DESCRIPTION: EKLL;'I'MA P~IIA~.NW~D .~t')OT~-I -~OF~DIVL~IoN F~L.~CJ~-. Z T~'T' I4OL~_ PAI;~.
DEPTH SLOPE SITE PLAN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
[FEETJ
e!
"1
I tJ
t
~-~ioz_~ -FO ~..0~
RooT~ ~ ~.5,
~w~
.~ v~s_.__ GROUND WATER.
7.~,;; I , , ENCOUNTERED? ~ ~ L
uo~T~ 15,0{ 16,~' o
P
E
IF YES, AT WHAT
DEPTH?
COEBC~ ~ I~.0'
uG~P-, tAEFU.5^L-~ 1'7.o'
17, O'
DVC INIsT/~d...L~.DTo I..~.O~
Gross Net Depth to Net
Reading Date Time Time Water Drop
z q: 35 Zx~mi ri -7'7/701/?_ 7 ~
3 m:05 3om,'n -77[ -~1 ~ ~
5 I~: oo Z..O mi ~,_ -'/TJ~ -/i
PERCOLATION RATE ~ |minu~es/inch)
TEST RUN BE'I~EEN ~'--. '7 ~,~' FT AND ~- ~ FT :.
COMMENTS
/
PERFORMED BY:
· 72...00~ 16/79]
PERFORMEb FOR:
LEGAL DESCRIPTION:
M"NICIPALITY OF ANCHORAGE
DEPARTMENT t.. HEALTH AND ENVIRONMENTAL PRO, ~-CTION I-I PERCOLATION
TEST
825 L Stra~, Anchorage, Alaska 99501 264-4720 __ ,.~ ~ ~I~W
DATE PERFORMED: ._~/~/~ ~.
EKLUTk/A
S .O'
SLOPE
SITE PLAN
WAS GROUND WATER S
ENCOUNTERED? ~,f'O L
O
IF YES, AT WHAT
DEPTH;'
P
E
Gross Nat Depth to Net
Reading Date Time Time Water D;op
oF- 80~J~G-
~-O.O ' PERCOLATION RATE
J~O~Jkl~OPE. tJ ~ II .O'
A F'-rE...~_ DEIL.L.I kJG-
l;VC.~lkJST~rgJ~_ _~') TO II C;) TEST RUN BETWEEN
FT AND
Im;nulmllnch)
.~. 75 FT
COMMENTS : '
f'ERFORMEDBY: ,~""7"'~~'' C~'/~.l~.~ ~
72-O0~
CERTIFIED BY:
DEPAR~
LJNICIF'ALITY OF ANCHORAGE
Mi:I~'~?"OF HEALlH AN[) ENVIRONMEt~IAL I [CTION
~ESl
825 b ~t~,~. Anc~m~, Al~k~ 99501
SOILS LOG P E R CO L_ATI [,~.~ ~:~. ~::~ [:'[~ ' ~ ~ ~'~ '~ ¥""' "' ~'~ ~,'~'"" > "'c~' ~,"'~:' .... "'"'" "" '12' 'L:~' D~'
SLOPE SITE PLAN
2
10
11 WAS GROUND WATER
ENCOUNTERED?
IF YES, AT WHAT
13 DEPTH?
14
15
Oro.s~ Net Depth to
Rcad;ng Dat-" Time Tim~ Water O¢op
I .51~/~z 5': z5 ~o
I1:10
..~Orn, 8
I ,~_rm n
PE RCOL_ATION Ir] AT ~: ........... Z~/ ................ fro;nut c'~f;nch}
'TEST RUN BKT¥','EI;N -.~%'---'_..-~ ...... FI AND .... :_~ ...... FT
SOILS LOG
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2O
PERFORMED FOR:
LEGAL DESCRIPTION:
1
2
4
· 7
MUNICIPALITY OF ANCHORAGE
DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION
825 L, Street, Anchorage, Alaska 99501 264-4720
SOILS LOG - PERCOLATION TEST
FKLUTNA '~II:~C~WOOD .~OUTl-t
SLOPE
TEST
DATE
SITE PLAN
WAS GROUND WATER
ENCOUNTERED?
~~'IF YES, AT WHAT
DEPTH?
NO
s
Reading
Net
Time
Gross
Time
Date
PERCOLATION RATE
TEST RUN BETWEEN
~o; o~
*1~, ~'" FT AND
Depth to
Water
Drop
{minutes/inch)
PERFORMED BY:
CERTIFIED BY:
DATE:
72-008 (6/79)
z II
0
0
0
John M. Lamb,, P.E.
7127 Old $oward Highway". Al~C~ior;g;.,'iAlaska 99502
QEOTECHNICAL. -, ,.
ENGINEERING ., '.
ANO TESTING
907-349~6531-
May 20, 1982
Triad Engineering.
6937 Old Seward Highway
Anchorage, AK 99502
Attention: Dave Grenier
Subject:
Soils Investigations
Birchwood South Subdivision
Birchwood South Subdivision, Block 2
Gentlemen,
This letter presents the results of the soils investigatipns
of Birchwood South Subdivision and Birchwood South Subdivision,
Block 2, that we performed at your request. The Birchwood South
Subdivision property is located on Monastery Drive near the Old
Glenn Highway.
The Birchwoo~ South~'S.ubdivision, Block 2 propertz
is located on the southwest corner.of the intersection of the new
Glenn Highway and South Birchwood Loop Road. Both properties are
located within the N.W. 1/4 N.W. 1/4'S~ection 30,. Township 15 N.,
Range.1 W., Seward Meridian, Alaska.
On May 6, 1982, we drilled 4~ test~ borings on the Birchwood
'roper~ty. ~:' ~' 1982 we drilled
South Subdivision, Block 2 p ~' '~'~ on May 7, ,
5 test borings on the Birchw00d'~S~u~th Subdivision property. The
test holes at both sites were~drl~lled~ifor'-the~purpose of pro-
viding preliminary soils ..infoi4'ni~i~'i'on~wi:~h"~'.:.which~ ~to assess the
feasibility of developing on-sit~!.:.'.:~as't~i~:water:'disposal systems.
Mr. ,John Graham, driller on '°Ur~'S~taff;';.:performed the drilling:,
with our Bombadier-mounted Arcti'~'Gas'~Auger. -Mr'..~.Pete-Chalich,,.~.,'
geological engineer on our:~staff;,.'observed the drilling, lo'gged¢'~.:
the borings and obtained sample~.:"-'~..' ': ~.,.:~:~':~ :':~'
This work was requested to b'e performed .to the minimum
standards of the Department of Health and Environmental Protec-
tion (DHEP). No laboratory analy~es are requested. In soils
which are visually classifie~ to include more than 6% silt (soil
finer than the #200 screen size), a percolation test is required
to be performed in the area most likely to be developed for~the
absorption system. Our procedure, for performing the percolation
test is to drill an additional boring adjacent to the soils ~log
to the depth intended for percolation testing. Coarse gravel is
placed in the bottom of the'boring. Four-inch slotted and per-
forated PVC pipe is placed w~ithin the percolation test boring and
the annular space between the boring and t~e pipe is backfilled·
with washed gravel. On the day before the percolation tests are
to be performed, the percolation boring is filled with water and
allowed to saturate overnight. The testing is performed accord-
ing to the standards presented in the EPA publication "Onsite
"Page 41 Table ~-8.
Waste Water Treatmen~ and Disposal Systems, ,
All soils are visually classified in the field according to
the Unified Soils Classification,'System presented on Plate 12 and
the Textural Classification System'presented on Plate 13.
Slotted 1-1/2 inch nominal standpipe was placed in the deep
borings to allow for observation of free water levels after
drilling. In soils with a significant silt fraction, substantial
time is required to allow the freei~water level to stabilize. It
should be noted that static:'free'~water m~ay fluctuate seasonally
and annually in response to seasonal runoff or heavy rainfall.
On May 12, 1982, Ms. Stacy Kaplan, of our staff, returned to
each site to perform the percolation tests and to. record the
water level at each of the boring sites. The results of the
field investigation and percolation testing of the Birchwood
South Subdivision site are presented on the standard DHEP forms
attached as Plates 2 through 6. The Site Plan showing the
approximate locations of the borings is presented as Plate 1.
The results from Birchwood South Subdivision, Block 2 are pre-
sented in a similar manner ~s Plates 8 through 11 with the Site
Plan presented as Plate 7.
We wer~ requested to perform this investigation to the
minimum standards required by the Department of Health and En-
vironmental Protect£on. It should be noted that in accordance
with these standards, the classifications of the soils are visual
and are performed by a field engineer. These classifications are
subject to change, because they have no~ been verified by labora-
tory analyses. This work was performed for the sole purpose of
preliminary evaluation by the Department of Health and Environ-
mental Protection of the suitability of the lots for onsite Sewer
system development. Any extrapolation of this data for other
purposes is not within the intent of the investigation or re-
quested services. We trust the foregoing is sufficient to your
immediate needs and is comprehensive within its limited scope.
If questions arise, or if we can be of any further service,~
~please feel free to call.
Yours truly,
Pete Chalich, E.I.T.
Geological Engineer
Approved b~:
Jol3'n lq. l'.ambe, PS.
Civil Engineer 4254-E
ARCTIC ENGINEERS, INC.
October 22, 1984
AEI# 84-003-40
State of Alaska
Dept. of Environmental Conservation
437 'E' Street
Anchorage, Alaska 99501
Re: Separation Distance Waiver for Lot 4B, Birchwood South Subdivision, Anchorage
Recording District
Attn: Bruce E. Erickson
Dear Mr. Erickson:
This report was written at the request of the owner in an attempt to obtain a waiver
to 18 AAC 72.021 Separation Distances. Existing separation distances on the subject
property are:
Well to nearest edge of septic tank: 76'
Well to nearest edge of soil absorption system: 86'
The well was installed 2 - 3 years ago, and was initially determined to be dry. The
owner installed the septic system in 1983, at a location which was convenient for a
proposed home. At a later,date, the owner performed further work on the well, and mai
it produce an adequate amount of water to meet his needs. Thus, he desires to get
a waiver on this system rather than to drill a new well.
A copy of the well log is attached. Total depth is 242 feet, with various layers
of primarily clay materials from 10 feet ot 235 feet deep. Water is obtained from thc
bedrock layer, 232-245 feet deep, which was fractured after drilling by blasting.
Casing was installed to a depth of 44 feet.
Copies of as-builts on the plot plan and septic system are attached for your referenc~
along with a soils log/percolation test report and water quality analysis report.
Ground surface topography of the subject property is such that runoff runs from the
well in a northerly direction, and from the septic system in a southerly direction.
Both the well and septic system are at approximately the same ground surface elevatio]
ARCTIC ENGINEERS, INC.
Based on the subsurface impermiable clay conditions at the well site, the depth
of the aquifer from which water is obtained, and the surface topography at the
site, we feel that a distance separation waiver is justifiable.
We hope this information is adequate for your needs. If not, please call me at
561-1345.
Sincerely,
at ts ch~en t~/
J M LM~E~NU ~SSOC,~TES
SOIL AND MATERIALS
ENGINEERING
AND TESTING
John M. Lambe,'P.E.
TO:
4101 Arctic Boulevard · Suite 205 · Anchorage, Alaska 99503
907-276-4113
LETTER OF TRANSMITTAL
MUNICIPALITY OF ANCHORAGE
;"~T ,~c ,,-"-"1 ?.
ATTENTION:
SUBJECT:
OUR JOB NO.
Transmitted herewith is/are the following:
CC:
JOHN M. LAMBE AND ASSOCIATES
Date
SOIL AND MATERIALS
ENGINEERING
AND TESTING
John M. Lambe,'P.E.
4101 Arctic Boulevard * Suite 205 · Anchorage, Alaska 99503
907-276-4113
LETTER OF TRANSMITTAL
TO:
ATTENT ION:
SUBJECT:
OUR JOB NO.
Transmitted herewith is/are the following:
CC:
JOHN M. LAMBE AND ASSOCIATES
SHEET O'f
MACHINE USED JOHN M LAMBE P.E. ,'
METHOD USED SOILS LOG TOTAL DEPTH
VEGETATIONs, DRAINAGE 8~ GENERAL TOPOGRAPHY GROUND WATER
'DATE
TIME
,DEPTH
LOCATION DIAGRAM 8~ NOTES
0 0
0 m
a.. O < o -- DESCRIPTION- $OIL~ COLOR~ TEXTURE~ ODOR~ GRAIN~ SHAPE~ LAYERING OR
03 m m n,. .--, ~:~ :3 VARVING~ ICE TYPE~ BONDING OR TOUGHNESS~ DRILLING NOTES
SHEET O'F
MACHINE USED JOHN M LAMBE P.E.
HOLE
METHOD USED SOILS LOG TOTAL DEPTH /"7'.d _
TIME STARTED -/~;/s~ FINISHED
VEGETATION, DRAINAGE ~ GENERAL TOPOGRAPHY GROUND WA~ER
' DATE
, TIME
' DEPTH
LOCATION DIAGRAM ~TES
o ~ C < o -- ~S~IPTION' SOIL, COLOR, TEXTURE~ ODOR, GRAiN~ SHAPE~ LAYERING OR
m m m ~ = [ ~ = VARVING, ICE ~PE~ BONDING OR TOUGHNESS, DRILLING NOTES
"' SH EET_..L O'F
MACHIN[ USE;D JOHN .M- LAMBE P.E.
METHOD USED SOILS LOG TOTAL DEPTH~O'
TIME STARTED ~ 'oo ,, FINISHED ~{ ~ ~' DATE
VEGETATION~ DRAINAGE ~ GENERAL TOPOGRAPHY GROUND WATER
DATE
DEPTH
...... LOCATION' DIAGRAM ~ NOTES ~ ~
~ ~ Q o - ~S~IPTION- SOIL, COLOR~ TEXTURE, ODOR~ GRAIN~ SHAPE~ LAYERING OR
I I" SHEET z
MACHINE. USED JOHN M LAMBE P.E.
METHOD USED SOILS LOG TOTAL DEPTH .-~;z4~ ~,""' .. ._
VEG~TATION~..DRAINA~E ~ GENERAL TOPOGRAPHY GROUND WATER
DATE
' TIME
DEPTH
LOCATION DIAGRAM 6 NOTES
0
~ ~ O ~ o < o~- ~S~IPTION-SOIL, COLOR, TEXTURE, ODOR. GRAIN, SHAPE', LAYERING OR
m m ~ ~ ~ = ~ VARVING~ ICE ~PE, BONDING OR TOUGHNESS~ DRILLING NOTES